JP2006217529A - Image display system and image display apparatus - Google Patents

Abstract

An image display system and an image display device that can reliably reproduce content on an output destination device are provided.
An image display device 2 having an image display means 215 and a control means 211, and a first external device (3, 4, 5, 6, 7) connected to the image display device 2 and storing content files. The control means 211 includes a second external device (3, 4, 5, 6, 7) capable of storing content files stored in the image display device 2 or the first external device. The file format acquisition unit acquires the file format acquisition unit that acquires a file format that can be played back by the searched second external device, and the file format of the content file that is input to the image display device. A file format conversion unit that converts the file format into the second external device, and a file output unit that outputs the content file converted by the file format conversion unit to the second external device. Obtain.
[Selection] Figure 2

Description

  The present invention provides an image display device that includes an image display unit that displays an image according to input image information, a control unit that controls the entire device including the image display unit, and a network connected to the image display device. The present invention relates to an image display system and an image display apparatus that are connected to each other via an external device that stores content files including at least one of image information and audio information.

  2. Description of the Related Art Conventionally, an image display device including an image display unit that displays an image according to input image information and a control unit that drives and controls the entire device including the image display unit is known. In addition, it is possible to construct a home network by connecting such an image display device to an external device or a PC (Personal Computer) in which a content file including at least one of image information and audio information is stored. It is becoming common. In such a home network, information such as content files can be shared between devices (apparatuses) located on the network, and content files can be reproduced and transferred across devices. Configured.

  However, in such a general home network, when a content file is transferred between devices, the file format of the content file may not be saved at the transfer destination. In particular, when using a mixture of devices configured with different media (recording media) on a home network, the file formats that can be stored are usually different for each device. Therefore, when transferring a content file, it is necessary to convert the file format of the content file so that it can be saved in the transfer destination device. A media conversion device that performs conversion of a file format corresponding to the media when transferring a content file between the media is known (see, for example, Patent Document 1).

  In the media conversion device described in Patent Document 1, the file format (format) of a file recorded on an output (transfer) source medium is registered for each of the media that can be selected as the output source, and the output source The file format to be used when writing from the medium to the output destination medium is provided with a format conversion table registered for each medium that can be selected as the output destination. When file output (data output) is performed from the output source medium to the output destination medium, whether or not the file format of the file of the output source medium can be converted into a file format to be used in the output destination medium, and It is checked whether or not there is a conversion program to be converted into the file format, the file format is converted by the conversion program, and the file is transferred. This eliminates the need for the user to specify a file format corresponding to the output destination medium when outputting the file to the output destination medium, thereby simplifying the user's operation when outputting the file. it can.

JP 2002-25182 A

  However, the media conversion device described in Patent Document 1 is configured to perform file format conversion of a file corresponding to the media, and does not consider the file format supported by the device using the media. For this reason, even if the content file has a file format that can be saved in the output destination medium, the file format may not be able to be played back by a device that uses the output destination medium. For example, in a system in which a PC (personal computer) described in Patent Document 1 is connected via a network to a content reproduction apparatus having an HDD (Hard Disk Drive), an AVI (Audio) is transmitted from the PC to the content reproduction apparatus. When a video content file in the (Video Interleaved) format is output, the HDD of the content playback device can store the video content file, but the playback device itself cannot always play back an AVI format file. In such a case, the content reproduction apparatus cannot reproduce the video content file that has been output and saved. Therefore, when outputting a content file, it is desired to output the content file in a state that can be reproduced at the output destination.

  An object of the present invention is to provide an image display system and an image display device that can reliably reproduce a content file on an output destination device.

  In order to achieve the above object, the image display system of the present invention includes image display means for displaying an image corresponding to input image information, and control means for controlling the entire apparatus including the image display means. An image display system comprising: an image display device; and a first external device connected to the image display device and storing a content file containing at least one of image information and audio information. An external device search unit that searches for a second external device that can store the content file stored in the image display device or the first external device, and a file format that can be played back by the searched second external device is acquired. The file format acquisition unit and the file format of the content file input to the image display device are acquired by the file format acquisition unit. And file format conversion section for converting the Airu format, the content files converted by the file format conversion section, characterized in that it comprises a file output unit that outputs to the second external device.

According to the present invention, it is possible to output a content file in a file format that can be played back by the second external device to the second external device connected to the image display device.
That is, the external device search unit of the control means constituting the image display device searches for a second external device that can store the content file stored in the image display device or the first external device. The file format acquisition unit acquires a file format that can be played back by the second external device searched by the external device search unit, and the file format conversion unit stores the content file stored in the image display device or the first external device. Is converted to the obtained file format. The converted content file is searched for by the external device search unit, and is output by the file output unit to the second external device from which a reproducible file format has been acquired.
According to this, the control means of the image display device searches for the second external device that is connected to the image display device and can store the content file, and converts it into a file format that can be played back by the searched second external device. The content file thus made can be output to the second external device. Therefore, a content file in a file format that can be reliably played back can be output to the second external device connected to the image display device.

In the present invention, the control means displays, on the image display means, a file format selection screen for selecting a file format of a content file to be converted by the file format conversion unit from the file format acquired by the file format acquisition unit. Preferably, the file format conversion unit performs file format conversion of the content file in the file format selected on the selection screen.
According to the present invention, when the second external device to which the content file is output can reproduce a plurality of types of file formats, the second external device converts the file format selected by the user into the second external device. A content file can be output.
That is, by selecting the file format of the content file on the file format selection screen displayed on the image display means by the format selection screen display unit, the second external device that outputs the converted content file has a plurality of types of file formats. When the file can be reproduced, the file format of the content file to be output to the second external device can be selected from the plurality of types of file formats. Therefore, the content file can be converted into a file format desired by the user, and the content file can be output to the second external device.

In the present invention, an external device selection screen for selecting a second external device to which the content file is output by the file output unit from the second external device searched by the external device search unit is displayed on the image display means. Preferably, a device selection screen display unit is provided, and the file output unit outputs the converted content file to the second external device selected on the external device selection screen.
According to the present invention, when there are a plurality of second external devices capable of storing a content file, the converted content file can be output to the second external device selected by the user.
That is, the device selection screen display unit causes the image display unit to display an external device selection screen for selecting a second external device that outputs a content file from a plurality of second external devices searched by the external device search unit. Thus, the user can select the second device that outputs the content from the selection screen. Therefore, the file output unit can output the content file to the second external device selected by the user by outputting the content file to the selected second external device.

  The image display device of the present invention is an image display device comprising image display means for displaying an image according to input image information, and control means for controlling the entire apparatus including the image display means. An interface connected to the control means and capable of connecting to an external device capable of storing a content file containing at least one of image information and audio information, and the control means sends the input content file to the external device A file format conversion unit that converts the file into a file format that can be played back, and a file output unit that outputs the converted content file to the external device.

  According to the present invention, the file format conversion unit constituting the control means of the image display device displays the image in a file format that can be played back by the external device to the external device connected to the image display device via the interface. Convert content files to be input to the device. Then, the converted content file is output to an external device connected via an interface by the file output unit that also constitutes the control means. According to this, the content file output to the external device can be reproduced by the external device. Accordingly, the content file can be converted and output to the external device without the user being aware of whether the file format of the content file to be output is a file format that can be played back by the external device that is the output destination. .

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram of a television receiving system as an image display system of the present invention.
As shown in FIG. 1, the television receiver system 1 of the present embodiment includes a television receiver 2 as an image display device, a portable image display device 3 directly connected to the television receiver 2, and a network N. And a media player 4, a portable music player 5, a mobile phone 6, and a PC 7 connected to the television receiver 2. These portable image display device 3, media player 4, portable music player 5, mobile phone 6 and PC 7 correspond to the first external device of the present invention and also correspond to the second external device of the present invention. .

(1) Configuration of Television Receiver System 1 The television receiver 2 includes a receiver body 21 and a remote controller 22 that outputs an operation signal to the receiver body 21 by infrared rays.
Among these, the remote controller 22 is provided with various buttons for operating the receiver main body 21 although not shown in detail. Specifically, as such buttons, there are provided a channel button on which numbers for switching channels are written, an input switching button for switching an input source, a volume adjusting button for raising and lowering a volume, and the like. In addition, a process start button for causing the receiver body 21 to execute a file output / deletion process S to be described later, an up / down button for selecting an item on the screen displayed in the file output / deletion process S, and a confirmation for confirming the selected item Button and a return button to return to the previous screen.
The remote controller 22 outputs an operation signal by infrared rays, but may be configured to transmit by radio waves.

The portable image display device 3 is a portable image display device that reproduces a content file recorded on a mounted semiconductor memory card. The portable image display device 3 includes an image display unit composed of a liquid crystal panel, an audio output unit composed of a speaker, a reader / writer of a semiconductor memory card, and a CPU (Central Processing) for controlling the entire device. Unit) and a USB (Universal Serial Bus) interface, and is connected to the receiver main body 21 of the television receiver 2 via the USB interface.
The portable image display device 3 reads a content file recorded on a semiconductor memory card connected to a reader / writer, processes it by a CPU, and displays an image corresponding to image information included in the content file on an image display unit. While displaying, the sound according to the sound information included in the content file is output by the sound output unit.
The portable image display device 3 outputs the content file stored in the semiconductor memory card in accordance with a control signal input from the television receiver 2 connected via the USB interface, and the portable image display device 3 The content file to be input to the display device 3 is recorded on the semiconductor memory card. Note that such a portable image display device 3 may include a HDD instead of the semiconductor memory card and the reader / writer.

  Here, the content file is a data file including at least one of image information and audio information, and as such a content file, an audio file including only audio information and an image file including at least image information are included. There is. Among these, as an audio file, MP3 (MPEG1 Audio Layer-3) format, ATRAC3 (Adaptive TRansform Acoustic Coding-3) format, WMA (Windows (registered trademark) Media Audio) format, and TwinVQ (Transform-domain Weighted Interleave) Vector Quantization) format file. As image files, MPEG (Moving Picture Coding Experts Group / Moving Picture Experts Group) 1-4 format, WMV (Windows (registered trademark) Media Video) format, AVI (Audio Video Interleave) format, MOV (Quicktime (registered)) Trademark) Movie) format, H.264 / MPEG4 AVC (H.264 / MPEG4 AVC (Advanced Video Coding)) format files.

The media player 4, the portable music player 5, the mobile phone 6 and the PC 7 are connected to the receiver body 21 of the television receiver 2 via the network N as described above.
Among these, the media player 4 performs reproduction of the content file stored in the media player 4 and recording of the input content file. Although not specifically shown, the media player 4 includes a network interface for connecting to the network N, an HDD (Hard Disk Drive), processing of a content file recorded in the HDD, and And a CPU for controlling the entire apparatus. Then, the media player 4 reproduces the content file stored in the HDD, and outputs image information and audio information included in the content file to a device connected to the media player 4. Further, when a content file is input to the media player 4, the media player 4 records the content file on the HDD.

  The portable music player 5 is a music player that has a battery inside and is portable. The portable music player 5 includes a network interface for connecting to the network N, an audio output unit, a semiconductor memory card reader / writer, and a CPU that controls the entire apparatus. In this portable music player 5, the reader / writer reads the audio file recorded on the semiconductor memory card from the semiconductor memory card, the CPU reproduces the audio file, and the audio corresponding to the audio file is read. The signal is output to the audio output unit, and the audio output unit outputs the audio. In addition, the portable music playback device 5 causes an audio file to be input to the portable music playback device 5 to be written to the semiconductor memory card by a reader / writer under the control of the CPU. Such a portable music player 5 may be configured to include an HDD instead of the semiconductor memory card and the reader / writer.

  The mobile phone 6 is configured to be able to communicate with other mobile phones 6 and fixed phones by wireless communication. Similarly to the portable music player 5, the cellular phone 6 is recorded on an image display unit, an audio output unit, a semiconductor memory card reader / writer, and a semiconductor memory card read by the reader / writer. And a CPU for processing the content file and controlling the entire apparatus. The cellular phone 6 has a function of not only reproducing the content file read from the semiconductor memory card via the reader / writer by the CPU but also writing the content file input to the cellular phone 6 to the semiconductor memory card. Have. Note that such a cellular phone 6 may be configured to include an HDD instead of the semiconductor memory card and the reader / writer.

The PC 7 is a general PC that includes an HDD, an optical drive, a CPU, and the like. The PC 7 reads a content file from the HDD and an optical medium attached to the optical drive, and performs playback processing by the CPU. . Further, the PC 7 reads a content file from the HDD and the optical medium in accordance with a control signal from the receiver main body 21 of the television receiver 2 and outputs the content file to the receiver main body 21, or the HDD or the optical media. In addition, it has a function of writing an input content file.
Note that such a PC 7 stores a program for performing processing according to a control signal input from the receiver body 21 via the network N, and the program is always activated on the PC 7.

(2) Configuration of Receiver Main Body 21 FIG. 2 is a block diagram showing a configuration of the receiver main body 21 of the television receiver 2.
As shown in FIG. 2, the receiver body 21 includes a control board 211, an interface board 213, a speaker 214, an image display unit 215, and an HDD 216.
Among these, the speaker 214 is connected to a later-described audio signal processing circuit 2113 of the control board 211, and outputs a sound corresponding to the audio signal output from the audio signal processing circuit 2113.
The image display unit 215 corresponds to the image display means of the present invention, and includes a liquid crystal panel and a liquid crystal panel drive circuit. That is, the receiver body 21 of the present embodiment is configured as a liquid crystal television.
Further, the HDD 216 corresponds to a storage unit that stores content files, and is connected to a system controller 2121 (to be described later) of the control board 211. Under the control of the system controller 2121, the HDD 216 reads the content file stored in the HDD and writes the content file input to the receiver main body 21.

  The interface board 213 connects the receiver main body 21 and an external device. The interface board 213 performs input / output signal conversion and the like, and is electrically connected to a system controller 2121 of the control board 211 described later. The interface board 213 includes a remote control interface (remote control IF) 2131, an external interface (external IF) 2132, a network interface (network IF) 2133, and an interface controller 2134.

The remote control interface 2131 receives an operation signal transmitted from the remote controller 22 and converts the operation signal into a control signal in a format that can be processed by the receiver body 21. This control signal is output to a CPU 2118, which will be described later, via the system controller 2121 and processed by the CPU 2118 to control the driving of the receiver body 21.
The external interface 2132 includes a USB terminal and an IEEE 1394 terminal, and the portable image display device 3 is connected to the USB terminal. Port numbers are set for these connection terminals.
The network interface 2133 is for connecting to the network N, and the receiver body 21 performs data communication with devices on the network N via the network interface 2133.
The interface controller 2134 is connected to the remote control interface 2131, the external interface 2132, and the network interface 2133, and controls these to control data input / output on the interface board 213.

The control board 211 controls the drive of the entire receiver body 21 and processes content files stored in the HDD 216, content files input from the network N via the interface board 213, which will be described later, and broadcast signals. It corresponds to the control means of the present invention.
The control board 211 includes a tuner 2111, a demultiplexer 2112, an audio signal processing circuit 2113, an image signal processing circuit 2114, a drawing processing circuit 2115, a frame memory 2116, an image output circuit 2117, a CPU 2118, and a ROM. (Read Only Memory) 2119, RAM (Random Access Memory) 2120, and a system controller 2121, which are connected to each other via a bus B.

The tuner 2111 selects and receives a broadcast signal having a frequency corresponding to the channel selected by the user from the broadcast signal input from the antenna, converts the signal into a signal having a constant frequency, and outputs the signal.
The demultiplexer 2112 separates and extracts audio information and image information from the signal converted by the tuner 2111, outputs the extracted audio information to the audio signal processing circuit 2113, and similarly outputs the extracted image information to the image signal processing circuit 2114. Output to.
The audio signal processing circuit 2113 processes the audio information separated by the demultiplexer 2112 and the audio information input from the system controller 2121, and outputs audio corresponding to the audio information via the speaker 214.

The image signal processing circuit 2114 processes the image information separated by the demultiplexer 2112 and the image information input via the system controller, and decodes it into reproducible image information for each frame.
The drawing processing circuit 2115 includes a scaler and an OSD processing circuit. Among these, the scaler adjusts the scale of the display image so as to match the resolution of the image display unit 215. Further, the OSD processing circuit refers to the ROM 2119 and the RAM 2120, and generates an OSD menu image based on various information stored therein.
The frame memory 2116 is connected to the drawing processing circuit 2115 and the image output circuit 2117, receives information corresponding to one frame of the image displayed on the image display unit 215 from the drawing processing circuit 2115, and stores it in the image output circuit 2117. Output.
The image output circuit 2117 outputs the display image information written in the frame memory 2116 to the image display unit 215 as a display image signal.
That is, the drawing processing circuit 2115, the frame memory 2116, and the image output circuit 2117 correspond to the format selection screen display unit and the device selection screen display unit of the present invention.

The ROM 2119 stores setting data of the receiver body 21, programs executed by the CPU 2119, such as a control program of the receiver body 21, a file output / delete process program for executing a file output / delete process S described later, and the like. Has been.
The RAM 2120 is temporarily stored when the setting data and program stored in the ROM 2119 are used by the CPU 2118. The RAM 2120 temporarily stores various information in a file output / deletion process S described later.

  The system controller 2121 assists the function of the CPU 2118 and mainly controls data input / output with respect to the control board 211. As shown in FIG. 2, the system controller 2121 is connected to an HDD 216 and an interface board 213, and controls reading of information such as contents recorded in the HDD 216 and writing of information to the HDD 216. , Input / output control of data with respect to the interface board 213 is performed.

(3) Function classification of CPU 2118 FIG. 3 is a block diagram showing the function classification of the CPU 2118.
The CPU 2118 performs drive control of the entire control board 211 and outputs a control signal to each component. Further, the CPU 2118 performs a file output / deleting process S for converting the file format of the content file existing on the television receiver system 1 and outputting the converted content file to an external device connected to the receiver main body 21. Execute. Therefore, the CPU 2118 includes an external device searching unit 2118A, an output source device selection screen display instruction unit 2118B, a content file searching unit 2118C, a file selection screen display instruction unit 2118D, and an output destination device selection screen display instruction unit 2118E. A function processing unit classified into a file format acquisition unit 2118F, a file format selection screen display instruction unit 2118G, a file format conversion unit 2118H, a file output unit 2118I, and a processing screen display instruction unit 2118J.

  The external device search unit 2118A searches for an external device connected to the receiver body 21. That is, the external device search unit 2118A searches for external devices that can input / output content files among the external devices connected to the network interface 2133 via the network N. Then, the external device searching unit 2118A acquires device information of the extracted external device, for example, an IP address, a device name, a device type, and the like, and writes them in the RAM 2120.

  The output source device selection screen display instruction unit 2118B forms an image of an output source device selection screen that selects an output source of a content file to be converted by a file format conversion unit described later from the external devices extracted by the external device search unit 2118A. Instruct. Specifically, the output source device selection screen display instruction unit 2118B outputs the image forming signal of the output source device selection screen to the drawing processing circuit 2115. The drawing processing circuit 2115 to which the image forming signal is input executes image formation of the output source device selection screen from the device information stored in the RAM 2120 and the image template stored in the ROM 2119, and outputs the image to the frame memory 2116.

  The content file search unit 2118C accesses the external device selected on the output source device selection screen, and acquires information on the content file stored in the external device. Specifically, the content file search unit 2118C outputs a control signal for inquiring information on the content file stored in the external device to the selected external device. Then, the external device to which the control signal is input outputs, for example, the saved file name and extension information indicating the file format of the file to the content file search unit 2118C. The file information obtained in this way is written and stored in the RAM 2120 by the content file search unit 2118C.

  The file selection screen display instruction unit 2118D instructs image formation on a file selection screen for selecting a content file to be output from among the content files stored in the external device selected on the output source device selection screen. That is, the file selection screen display instruction unit 2118D instructs the drawing processing circuit 2115 to form an image of a file selection screen for selecting a content file from the content file information acquired by the content file search unit 2118C. Specifically, the file selection screen display instruction unit 2118D outputs an image formation signal of the file selection screen to the drawing processing circuit 2115. The drawing processing circuit 2115 that has received this image formation signal executes image formation of a file selection screen from the file information stored in the RAM 2120 and outputs the image to the frame memory 2116.

In such a file selection screen, not only the content file can be selected, but also an output method, that is, one of transmission, storage, and deletion of the content file can be selected.
Here, transmission of a file indicates streaming distribution of a content file. Therefore, when transmission is selected, data for streaming delivery is generated based on the selected content file and output to the device selected on the output destination selection screen described later. Saving a file indicates that the selected content file is copied, the copied content file is converted into a file format as necessary, and then stored in the own device or another device. . The file deletion indicates that the selected content file is electrically deleted.

  The output destination device selection screen display instruction unit 2118E issues an instruction to form an output destination device selection screen for selecting an external device as an output destination of the content file converted by the file format conversion unit 2118H described later. Specifically, the output destination device selection screen display instruction unit 2118E outputs an output destination device selection screen formation signal to the drawing processing circuit 2115. The drawing processing circuit 2115 to which the formation signal is input executes image formation of the output destination device selection screen from the device information stored in the RAM 2120 and the image template stored in the ROM 2119, and outputs the image to the frame memory 2116. .

  The file format acquisition unit 2118F acquires the file format of a content file that can be played on the external device selected on the output destination device selection screen. Specifically, the file format acquisition unit 2118F outputs a control signal for inquiring of a file format that can be reproduced by the external device to the selected external device. The external device to which the signal is input outputs information including a file format that can be played by the external device to the file format acquisition unit 2118F. The file format information obtained in this way is stored and saved in the RAM 2120 by the file format acquisition unit 2118F.

  The file format selection screen display instructing unit 2118G is a file format selection screen for selecting which file format is to be output from among the file formats acquired by the file format acquisition unit 2118F of the content file selected on the file selection screen. Instructs image formation. Specifically, the file format selection screen display instruction unit 2118G outputs an image formation signal of the file format selection screen to the drawing processing circuit 2115. The drawing processing circuit 2115 to which the image formation signal is input performs image formation on the file format selection screen from the file format information acquired by the file format acquisition unit 2118F and stored in the RAM 2120 and the image template stored in the ROM 2119. And output to the frame memory 2116.

The file format conversion unit 2118H converts the content file selected on the file selection screen into the file format selected on the file format selection screen. Specifically, the file format conversion unit 2118H reads the selected content file from the device selected from the output source device selection screen, and temporarily stores it in the HDD 216. Thereafter, the file format conversion unit 2118H reads from the ROM 2119 or the HDD 216 a program for converting the content file stored in the HDD 216 into the file format selected on the file format selection screen, and executes the program. Then, the file format conversion unit 2118H performs file conversion of the converted content file, and temporarily stores the content file in the HDD 216.
Here, if the file format of the content file selected on the file selection screen is the same as the file format selected on the file format selection screen, the file format conversion unit 2118H executes a file format conversion process. Without saving, the content file is temporarily stored in the HDD 216.

  The file output unit 2118I outputs the content file converted by the file format conversion unit 2118H to the device selected on the output destination device selection screen. Here, the file output unit 2118I performs streaming delivery of the generated data when transmission is selected on the file selection screen. If the save is selected, the content file temporarily stored in the HDD 216 is output to the output destination device. If the selected device is the receiver body 21, the content file temporarily stored in the HDD 216 is moved from the temporary folder to the formal folder.

  The processing screen display instruction unit 2118J instructs image generation of the processing screen and the processing completion screen when the file output unit 2118I outputs the content file. In addition, when deletion is selected on the file selection screen, an instruction is given to form an image on a confirmation screen for deletion processing and a deletion completion screen. Specifically, the processing screen display instruction unit 2118J outputs the respective image formation signals to the drawing processing circuit 2115 during processing at the time of file output and when the processing is completed, and at the time of confirmation at the time of file deletion and at the time of completion of deletion. To do. The drawing processing circuit 2115 to which such an image formation signal is input forms an image corresponding to each image formation signal and outputs it to the frame memory 2116. Note that the processing screen at the time of file output is a screen on which the progress of processing is displayed as an indicator so that the progress status can be recognized.

(4) Process Contents of File Output / Delete Process S (4-1) Overall Process FIG. 4 is a diagram showing a process flow of the file output / delete process S.
In the file output / deletion process S, the process start button provided on the remote controller 22 of the television receiver 2 described above is input, and the process start signal output from the remote controller 22 by the input of the process start button is the receiver main body 21. Start by typing in
In the file output / delete process S, as shown in FIG. 4, first, an external device search is performed by the external device search unit 2118A of the CPU 2118 (process S1). In this processing S1, a device directly connected to the receiver main body 21 and a device connected to the receiver main body 21 via the network N are searched. In this process S1, in this embodiment, as an external device, a portable image display device 3 directly connected to the receiver main body 21, a media player 4 connected to the receiver main body 21 via a network, a portable type The music playback device 5, the mobile phone 6, and the PC 7 are extracted.

FIG. 5 is a diagram showing an output source device selection screen. In addition, “↑ / ↓ move” in the drawings explaining the following screens indicates that the item selection is moved by operating the up and down buttons of the remote control 22, and “○ decision” is confirmation of the selection item by inputting the confirmation key. “× RETURN” returns to the previous screen by inputting the RETURN button. When the return button is input on the screen of FIG. 5, the file output / deletion process S ends.
After the process S1, the extracted external device and the receiver main body 21 including the HDD 216 are displayed in a list, and the user selects a device in which the content file to be output or deleted is stored, as shown in FIG. The original device selection screen is displayed (processing S2). Specifically, in the processing S2, the output source device selection screen display instruction unit 2118B outputs a control signal for forming and displaying the screen to the drawing processing circuit 2115, and the drawing processing circuit 2115 is extracted by the processing S1. An output source device selection screen including the receiver body 21 is formed based on the name of the external device. The image of the output source device selection screen is displayed on the image display unit 215 via the frame memory 2116 and the image output circuit 2117 as described above.
In FIG. 5, the device name of the external device as the device name, the device name of the external device as the type, and the I / F from the information of the external device extracted in step S <b> 1 and the receiver body 21. The connection mode between the external device and the receiver body 21 is displayed. In FIG. 5, the media player 4 is selected as the output source device.

Thereafter, as shown in FIG. 4, the control board 211 waits for an item (device name) to be selected on the output source device selection screen (processing S <b> 3), and the CPU 2118 of the control board 211 controls the remote controller 22. It is determined whether or not a control signal corresponding to the input of the confirmation button has been input (processing S4).
Here, when it is determined that the control signal corresponding to the input of the confirm button or the return button is not input, the process returns to the process S3 and the signal standby state is continued.

  On the other hand, if it is determined that a control signal corresponding to the input of the confirmation button has been input, the file information of the content file stored in the external device selected on the output source device selection screen is acquired (processing S5). Specifically, in process S5, the content file search unit 2118C accesses the selected external device and acquires file information such as the file name of the content file stored in the storage medium of the external device. The acquired file information is stored in the RAM 2120 by the content file search unit 2118C.

6 and 7 are diagrams showing a file selection screen. More specifically, FIG. 6 shows a screen until a file is selected on the file selection screen, and FIG. 7 shows a screen until a file is selected and a processing format of the file is selected.
When the file information is acquired by the process S5, a file selection screen for selecting a content file to be transmitted, stored or deleted based on the file information is displayed (process S6).
Specifically, in the process S6, the file selection screen display instruction unit 2118D outputs an image formation signal of the file selection screen to the drawing processing circuit 2115, and the drawing processing circuit 2115 receives the image formation signal in FIG. A file selection screen as shown in FIG. In FIG. 6, the “BBB.mpg” file saved in the media player 4 is selected.
When a file is selected on this file selection screen, a menu for selecting the processing format of the file is displayed on the same screen as shown in FIG. In FIG. 7, “transmission” is selected as the processing format.

After such processing S6, the control board 211 waits for an item (file name and processing format) to be selected on the file selection screen (processing S7), and the CPU 2118 of the control board 211 confirms the remote controller 22. It is determined whether or not a control signal corresponding to the button input is input (step S8).
Here, when it is determined that the control signal corresponding to the input of the confirm button or the return button is not input, the process returns to the process S3 and the signal standby state is continued.

On the other hand, when a control signal corresponding to the input of the confirmation button is input and it is determined that the item is selected, determination of the selected processing format is performed (processing S9).
If it is determined in this process S9 that “transmission” is selected as the file processing format, a transmission process is performed (process S10). If it is determined that “save” is selected, a save process is performed (process S20). If it is determined that “delete” is selected, a delete process is performed (process S40).

(4-2) Transmission process S10
FIG. 8 is a diagram illustrating a process flow of the transmission process S10. FIG. 9 is a diagram showing a destination device selection screen.
As shown in FIGS. 4 and 7, the transmission process S10 is executed when transmission is selected as the processing format of the file selected on the file selection screen, and performs the streaming process of the selected content file. As shown in FIG. 8, the transmission process S10 first displays a transmission destination device selection screen for selecting a transmission destination of the content file selected on the file selection screen (processing S11). Specifically, in this processing S11, the output destination device selection screen display instruction unit 2118E outputs the image forming signal of the transmission destination device selection screen to the drawing processing circuit 2115. The drawing processing circuit 2115 refers to the ROM 2119 and the RAM 2120 in accordance with the image forming signal, forms an image of the transmission destination device selection screen as shown in FIG. 9, and passes through the frame memory 2116 and the image output circuit 2117. The destination device selection screen is displayed on the image display unit 215.
In the example of FIG. 9, the PC 7 is selected as the transmission destination device.

After this processing S11, as shown in FIG. 8, the control board 211 waits for an item (device name) to be selected on the transmission destination device selection screen (processing S12), and the CPU 2118 of the control board 211 It is determined whether or not the control signal corresponding to the input of the confirmation button of the remote controller 22 has been input, and it is determined whether or not the item selection has been confirmed (processing S13).
If it is determined that the control signal corresponding to the input of the confirm button or the return button is not input, the process returns to step S12 and the signal standby state is continued.

  On the other hand, if a control signal corresponding to the input of the confirm button is input and it is determined that the transmission destination device is selected, the file format conversion unit 2118H accesses the external device that is the output source device, and performs processing S8. The content file determined to have been selected in the above is temporarily stored in the HDD 216 provided in the receiver main body 21. Then, the file format conversion unit 2118H generates a file for streaming based on the stored content file (processing S14). The streaming file generated by this process S14 is also temporarily stored in the HDD 216.

  After this processing S14, as shown in FIG. 8, the file output unit 2118I starts distributing the streaming file to the external device selected as the transmission destination device, which is the PC 7 in the above example (processing S15). . In response to this distribution, the PC 7 reproduces the input streaming file in real time, and displays an image on the monitor of the PC 7.

FIG. 10 is a diagram showing a file distribution screen.
During file distribution in process S15, a file distribution screen is displayed as shown in FIG. 8 (process S16). Specifically, in process S16, the processing screen display instruction unit 2118J outputs to the drawing processing circuit 2115 an image forming signal of the file distribution in-progress screen corresponding to the progress of file distribution by the file output unit 2118I, and the drawing processing circuit 2115 forms an image of the file distribution in-progress screen according to the image forming signal. In FIG. 10, the progress of file distribution is displayed as an indicator.

Along with the display of the file distribution screen in the process S16, the CPU 2118 monitors the file distribution status by the file output unit 2118I and determines whether the file distribution is completed (process S17).
Here, if it is determined that the file distribution has not ended, the file streaming distribution is continued, and the process returns to step S16 to continue displaying the file distribution screen.

FIG. 11 is a diagram showing a file distribution end screen.
On the other hand, if it is determined that the file distribution has ended, a distribution end screen indicating that the file streaming distribution has ended is displayed (processing S18). Specifically, in process S18, the processing screen display instruction unit 2118J outputs an image formation signal of the file distribution end screen to the drawing processing circuit 2115 when the file distribution ends, and the drawing processing circuit 2115 receives the image forming signal. The image formation of the file distribution end screen as shown in FIG. The formed file distribution end screen is output and displayed on the image display unit 215 via the frame memory 2116 and the image output circuit 2117. Thereafter, the transmission process S10 ends, and the file output / deletion process S also ends.

(4-3) Storage process S20
FIG. 12 is a diagram illustrating a processing flow of the storage process S20. FIG. 13 is a diagram showing a screen when saving is selected as a processing format on the file selection screen, and FIG. 14 is a diagram showing a storage destination device selection screen.
As shown in FIGS. 4 and 13, the saving process S <b> 20 is executed when saving is selected as the processing format of the file selected on the file selection screen.
In the storage process S20, as shown in FIG. 12, first, a storage destination device selection screen for selecting the storage destination of the content file selected on the file selection screen is displayed (process S21). Specifically, in this process S21, the output destination device selection screen display instruction unit 2118E outputs the image forming signal of the storage destination device selection screen to the drawing processing circuit 2115. The rendering processing circuit 2115 refers to the ROM 2119 and the RAM 2120 according to the image forming signal, forms an image of the storage destination device selection screen as shown in FIG. 14, and passes through the frame memory 2116 and the image output circuit 2117. The storage destination device selection screen is displayed on the image display unit 215.
In FIG. 14, the portable image display device 3 connected to the receiver body 21 via the USB terminal is selected as the storage destination device.

After this process S21, as shown in FIG. 12, the control board 211 waits for an item (apparatus name) to be selected on the save destination apparatus selection screen (process S22), and the CPU 2118 of the control board 211 It is determined whether or not an item has been selected by determining whether or not a control signal corresponding to the input of the confirmation button of the remote controller 22 has been input (processing S23).
Here, when it is determined that the control signal corresponding to the input of the confirmation button or the return button is not input, the process returns to step S22 and the signal standby state is continued.

  On the other hand, if a control signal corresponding to the input of the confirmation button is input and it is determined that the storage destination device has been selected, the file format acquisition unit 2118F displays the external device that is the storage destination device, which is a portable type in the above example. The image display device 3 is accessed, and file format information that can be played back by the portable image display device 3 is acquired (processing S24). The acquired file format information is stored in the RAM 2120 by the file format acquisition unit 2118F.

Here, when the content file selected from the file selection screen in step S6 and confirmed to be selected in step S8 is an audio file, the file format acquisition unit 2118F is an external device selected as the storage destination device. The file format information of a reproducible audio file is acquired, and if it is an image file, the file format information of the image file reproducible by the external device is acquired.
After this process S24, the CPU 2118 determines whether or not a file format reproducible by the selected storage destination device has been obtained by the process S24 (process S25).

FIG. 15 is a diagram showing a file format selection screen when reproducible file format information has been acquired. FIG. 16 is a diagram showing a file format selection screen when file format information cannot be acquired.
If it is determined that the file format information has been acquired, as shown in FIG. 12, the acquired file format information is displayed as a list, and one of the file formats that can be played back by the storage destination device is displayed. A file format selection screen as shown in FIG. 15 for selecting the file format is displayed (step S26).

On the other hand, if it is determined that the file format information could not be acquired, as shown in FIG. 12, the file format conversion unit 2118H lists all file formats that can convert the content file selected in step S8. A file format selection screen for displaying and selecting a file format for converting the content file selected from the file format is displayed (processing S27). Here, in the file format selection screen displayed in step S27, if the selected content file is an audio file, the file format related to the audio file is displayed. If the selected content file is an image file, the file format is displayed as an image file. The file format is displayed.
In FIG. 15 and FIG. 16, the selected content file is an “mpg” file, whereas “MPEG4”, which is the file format of an image file, is selected as the file format to be converted.

  Specifically, in these processes S26 and 27, the file format selection screen display instruction unit 2118G outputs an image formation signal of the file format selection screen corresponding to the determination state in process S25 to the rendering processing circuit 2115, and rendering The processing circuit 2115 forms an image corresponding to the image forming signal with reference to the ROM 2119 and the RAM 2120 and displays the image on the image display unit 215 via the frame memory 2116 and the image output circuit 2117.

Thereafter, as shown in FIG. 12, the control board 211 waits for an item (file format) to be selected on the file format selection screen (step S28), and the CPU 2118 of the control board 211 confirms the remote controller 22. It is determined whether or not an item has been selected by determining whether or not a control signal corresponding to the button input has been input (processing S29).
If it is determined that the control signal corresponding to the input of the confirm button or the return button is not input, the process returns to step S28 and the signal standby state is continued.

On the other hand, when it is determined that the control signal corresponding to the input of the confirmation button is input and the file format is selected, the file format conversion unit 2118H displays the file format of the content file selected on the file selection screen as the file format. A content file converted into the file format selected on the format selection screen is generated (step S30). Specifically, in the process S30, the device selected on the output source device selection screen is accessed, and the selected content file is temporarily stored in the HDD 216 of the receiver body 21. Thereafter, a program for converting the file format of the stored content file into the selected file format is read from the ROM 2119. Then, the program is executed, temporarily stored to convert the file format of the content file, and a storage content file is generated. Similarly, the generated content file is temporarily stored in the HDD 216.
When the output source device is the HDD 216 of the receiver main body 21, the selected content file may not be stored in the HDD 216.

When the generation of the content file with the converted file format in the process S30 is finished, the output of the generated content file is started to the storage destination device selected on the storage destination device selection screen (processing S31). Specifically, in the process S31, the file output unit 2118I outputs the content file generated by the file format conversion unit 2118H and converted in file format to the external device selected as the storage destination device. At this time, if the external device is connected to the receiver main body 21 via a network, information such as the IP address of the storage destination device is added and output. An external device to which such a content file is input writes the input content file into a storage medium that the external device has.
When the receiver main body 21 is selected as the storage destination device, the file output unit 2118I converts the file format and moves the content file temporarily stored in the HDD 216 to an effective folder. To do.

FIG. 17 is a diagram showing a file output screen.
Since it is expected that it takes time to convert and output the content file in such processes S30 and S31, the processing screen display instruction unit 2118J gives the drawing processing circuit 2115 the one shown in FIG. The outputting screen is displayed (process S32). While the output screen shown in FIG. 17 is being displayed, the progress status of the conversion and output processing is monitored, the progress status is displayed as an indicator on the output screen, and the end determination of the output processing is performed ( Process S33).

FIG. 18 shows an output end screen.
Here, when it is determined that the file output process in the process S31 is not completed, the process returns to the process S32 and the display of the outputting screen is continued.
On the other hand, when it is determined that the output process has ended, the processing screen display instruction unit 2118J causes the drawing processing circuit 2115 to display a processing end screen as shown in FIG. 18 (processing S33). After this process S33, the storage process S20 ends, and the file output / delete process S also ends.

(4-4) Deletion process S40
FIG. 19 is a diagram illustrating a processing flow of the deletion processing S40. FIG. 20 is a diagram illustrating a screen when deletion is selected as a processing format on the file selection screen, and FIG. 21 is a diagram illustrating a deletion confirmation screen.
As shown in FIGS. 4 and 20, the deletion process S40 is executed when deletion is selected as the processing format of the file selected on the file selection screen. In the deletion process S40, as shown in FIG. 19, a deletion confirmation screen for the content file selected on the file selection screen is displayed (processing S41). Specifically, in the processing S41, the processing screen display instruction unit 2118J outputs an image formation signal of the deletion confirmation screen to the drawing processing circuit 2115, and the drawing processing circuit 2115 responds to the input image formation signal. Then, a deletion confirmation screen as shown in FIG. 21 is generated and displayed.

After the deletion confirmation screen is displayed in step S41, the CPU 2118 determines the item (“YES” or “NO”) selected on the deletion confirmation screen as shown in FIG. 19 (step S42).
If it is determined that “NO” has been selected, that is, if it is determined that the user has selected “do not delete”, the deletion process S40 is terminated, and accordingly, the file output / deletion process is terminated. S ends.
On the other hand, if it is determined that “YES” has been selected, that is, if it is determined that the user has selected “delete”, the file selected on the file selection screen is deleted (step S43). Specifically, in the process S43, the CPU 2118 outputs a control signal for deleting the file to the device in which the selected file is stored. If the device in which the file is stored is the receiver body 21, the equivalent content file is deleted from the HDD 216.

FIG. 22 is a diagram showing a deletion completion screen.
After deleting the selected content file by the process S43, a deletion completion screen indicating that the deletion of the content file is completed is displayed (process S44). Specifically, the processing screen display instruction unit 2118J outputs an image formation signal of the deletion completion screen to the drawing processing circuit 2115, and the drawing processing circuit 2115 generates a deletion completion screen as shown in FIG. Then, the image is displayed on the image display unit 215 via the frame memory 2116 and the image output circuit 2117. After this process S44, the deletion process S40 ends, and the file output / deletion process S also ends.

According to the television receiver system 1 of the present embodiment described above, the following effects can be achieved.
That is, in the file output / deletion process S, the external device search unit 2118A of the CPU 2118 searches for the external device connected to the receiver body 21 of the television receiver 2, and selects the external device that is the output source of the content file. A screen to be displayed is formed by the output source device selection screen display instruction unit 2118B and the drawing processing circuit 2115.
The content file stored in the external device or the receiver main body 21 selected on this screen is extracted by the content file search unit 2118C, and a file selection screen for selecting a content file to be output to another device or the own device is displayed as a file. This is formed by a selection screen display instruction unit 2118D and a drawing processing circuit 2115.

  Here, in the case of transmission, a transmission destination device selection screen for selecting a transmission destination device for transmitting the selected content file is formed by the output destination device selection screen display instruction unit 2118E and the drawing processing circuit 2115, and the file format conversion is performed. The selected file is converted into a streaming file by the unit 2118H, and streaming delivery is performed to the transmission destination device by the file output unit 2118I.

In the case of saving, a save destination device selection screen for selecting a save destination device for saving the selected content file is formed by the output destination device selection screen display instruction unit 2118E and the drawing processing circuit 2115, and is selected on the screen. Information on the file format that can be played by the storage destination device is acquired by the file format acquisition unit 2118F.
If the file format information can be acquired, a file format selection screen for selecting one of the file formats that can be played by the storage destination device is displayed. If the file format information cannot be acquired, the file format conversion unit 2118H converts the file format information. A file format selection screen for selecting one of the possible file formats is formed by the file format selection screen display instruction unit 2118G and the drawing processing circuit 2115.
Based on the file format selected on this screen, the file format conversion unit 2118H performs file format conversion of the selected content file, and the content output file is output to the storage destination device by the file output unit 2118I. Saved.

  Further, in the case of deletion, a deletion confirmation screen for the selected content file is formed by the processing screen display instruction unit 2118J and the drawing processing circuit 2115. When deletion is selected, the file is deleted.

  According to such a television receiver 2, transmission is performed when a file is moved or copied between the receiver body 21 of the television receiver 2 and an external device connected to the receiver body 21. It is possible to eliminate the trouble for the user to consider whether the file format can be used at the destination and the storage destination. In other words, as long as file format information that can be played back by the storage destination device can be acquired, the content file output from the other device to the storage destination device can be reliably played back by the storage destination device. Accordingly, it is possible to input / output content files that can be reliably played back by the storage destination device connected to the television receiver 2. In addition, the user does not need to consider whether the content file that is scheduled to be output can be used on the storage destination device, so that the user's trouble can be saved, and those who are unfamiliar with such a system. Even so, you can easily input and output files.

  The file format information of the storage destination device acquired by the file format acquisition unit 2118F is used as a file format selection screen by the file format selection screen display instruction unit 2118G and the drawing processing circuit 2115. That is, when the storage destination device can use a plurality of file formats, the user can select a desired file format, and the file format conversion unit 2118H executes conversion according to the file format. According to this, the range of file formats that can be used by the user can be expanded. Even in such a case, the selected file format is a file format that can be used by the storage destination device. Therefore, the user can select a wider range of file formats.

  Furthermore, the output source device, the transmission destination device, and the storage destination device can be selected by the output source device selection screen display instruction unit 2118B, the output destination device selection screen display instruction unit 2118E, and the drawing processing circuit 2115. According to this, from the arbitrary external devices 3, 4, 5, 6, 7 and the receiver main body 21 desired by the user, similarly, the arbitrary external devices 3, 4, 5, 6, 7 and the receiver main body 21 are also selected. In addition, content files can be transmitted and stored. Further, when saving to the save destination device, as described above, the file format acquisition unit 2118F obtains a file format that can be used by the save destination device. Can be played. Therefore, a content file that can be reliably played can be stored from any device to any device.

(5) Modification of Embodiments The best configuration for carrying out the present invention has been disclosed above, but the present invention is not limited to this. In other words, the present invention is mainly illustrated and described mainly with respect to a specific embodiment, but the description limited to the shape, material, etc. disclosed above is merely an example in order to facilitate understanding of the present invention. However, the present invention is not intended to limit the present invention. Therefore, the description of the names of members excluding some or all of the limitations on the shape, material, etc. is included in the present invention. It is.

  In the embodiment, the file format acquisition unit 2118F of the CPU 2118 constituting the control board 211 of the receiver body 21 controls the external devices 3, 4, 5, 6, and 7 connected to the receiver body 21. Although a signal is output to inquire about the file format of a content file that can be reproduced by the external device, the present invention is not limited to this. For example, the ROM 2119 or the RAM 2120 of the control board 211 or the HDD 216 includes a reference table in which unique information such as a model name is associated with the file format of a content file that can be played back by an external device having the unique information. The acquiring unit 2118F may refer to the reference table based on the unique information acquired from the external device and acquire the file format of the content file that can be played back by the external device. In such a case, it is not necessary to access the network N when acquiring the file format, so that a quick file format acquisition process can be performed. Note that if the external device is accessed to obtain a reproducible file format, the external device connected to the receiver body 21 can use a new file format. The file format can be supported.

  In the embodiment, the ROM 2119 constituting the control board 211 stores a program for executing file conversion. However, the program may be configured to be updatable. In such a case, even when a new file format is distributed, the new file format can be handled.

  In the embodiment, the portable image display device 3 is connected to the receiver body 21, and the media player 4, the portable music player 5, the mobile phone 6, and the PC 7 are connected to the receiver body 21 via the network N. However, the present invention is not limited to this, and may have other configurations or other connection modes. That is, as long as data can be input and output to the receiver body 21 in some manner, the type of external device is not limited, and other connection modes may be used.

  In the embodiment, when the file format conversion unit 2118H executes the process of converting the file format of the input content file, the content file is temporarily stored in the HDD 216 provided in the receiver main body 21. However, the present invention is not limited to this, and the RAM 2120 may be written. If the HDD 216 is configured to store the data, it is possible to easily process a large-capacity file, and the HDD is less expensive than the RAM. Therefore, the receiver main body 21 and the television receiver system are cheaper. 1 can be configured.

  In the embodiment, in the storage process S20 of the file output / deletion process S, the portable player connected to the receiver main body 21 via the USB terminal from the media player 4 connected to the receiver main body 21 via the network N. Although the content file is output to the image display device 3, the position of the output source device and the storage destination device is not limited. The same applies to the transmission process S10 and the deletion process S40.

  In the embodiment, the liquid crystal television is adopted as the image display device. However, the present invention is not limited to this, and an image display unit that displays an image according to input image information, and a control unit that controls the entire device. Any other image display device may be used as long as the image display device is provided. For example, a plasma display, a CRT (Cathode Ray Tube) display, a projector, etc. can be mentioned.

  INDUSTRIAL APPLICABILITY The present invention can be used for an image display apparatus such as a television receiver connected to a home network, and also for an image display apparatus having a connection mode in which an external device is directly connected to an external interface without using a network. Can do.

1 is a configuration diagram of a television receiving system according to an embodiment of the present invention. The block diagram which shows the structure of the receiver main body in the said embodiment. The block diagram which shows the function classification | category of CPU in the said embodiment. The figure which shows the processing flow of the file output / deletion process in the said embodiment. The figure which shows the output source apparatus selection screen in the said embodiment. The figure which shows the file selection screen in the said embodiment. The figure which shows the file selection screen as which transmission was selected in the said embodiment. . The figure which shows the processing flow of the transmission process in the said embodiment. The figure which shows the transmission destination apparatus selection screen in the said embodiment. The figure which shows the file distribution screen in the said embodiment. The figure which shows the file delivery end screen in the said embodiment. The figure which shows the processing flow of the preservation | save process in the said embodiment. The figure which shows the file selection screen as which the preservation | save was selected in the said embodiment. The figure which shows the preservation | save destination apparatus selection screen in the said embodiment. The figure which shows the file format selection screen when the file format information in the said embodiment is acquirable. The figure which shows the file format selection screen when the file format information in the said embodiment cannot be acquired. The figure which shows the screen during output in the said embodiment. The figure which shows the output completion screen in the said embodiment. The figure which shows the processing flow of the deletion process in the said embodiment. The figure which shows the file selection screen as which deletion was selected in the said embodiment. The figure which shows the deletion confirmation screen in the said embodiment. The figure which shows the deletion completion screen in the said embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Television receiver system, 2 ... Television receiver, 3 ... Portable image display apparatus, 4 ... Media player, 5 ... Portable music player, 6 ... Mobile telephone, 7 ... PC, 211 ... Control board, 213 ... Interface Substrate, 215 ... Image display unit, 2115 ... Drawing processing circuit, 2116 ... Frame memory, 2117 ... Video output circuit, 2118A ... External device search unit, 2118F ... File format acquisition unit, 2118H ... File format conversion unit, 2118I ... File output Department.

Claims (4)

An image display means for displaying an image according to the input image information, an image display apparatus comprising a control means for controlling the entire apparatus including the image display means, and an image information and An image display system comprising a first external device that stores a content file including at least one of audio information,
The control means includes
An external device search unit for searching for a second external device capable of storing a content file stored in the image display device or the first external device;
A file format acquisition unit for acquiring a file format reproducible by the searched second external device;
A file format conversion unit that converts the file format of the content file input to the image display device into a file format acquired by the file format acquisition unit;
An image display system comprising: a file output unit that outputs the content file converted by the file format conversion unit to the second external device. The image display system according to claim 1,
The control means includes
A file format selection screen for selecting the file format of the content file to be converted by the file format conversion unit from the file format acquired by the file format acquisition unit, and a format selection screen display unit for displaying on the image display means,
The image display system, wherein the file format conversion unit performs file format conversion of the content file in a file format selected on the selection screen. The image display system according to claim 1 or 2,
Device selection screen display for causing the image display means to display an external device selection screen for selecting the second external device from which the content file is output by the file output unit from the second external device searched by the external device search unit Part
The image output system, wherein the file output unit outputs the converted content file to a second external device selected on the external device selection screen. An image display device comprising image display means for displaying an image according to input image information, and control means for controlling the entire apparatus including the image display means,
An interface connected to the control means and connectable to an external device capable of storing a content file containing at least one of image information and audio information;
The control means includes
A file format conversion unit that converts an input content file into a file format that can be played by the external device;
An image display device comprising: a file output unit that outputs the converted content file to the external device.

Images