JP2009218957A - Image output device and image display device - Google Patents

Abstract

The present invention provides a video output device and a video display device for displaying an error when a remote control signal having a transmission code corresponding to a device different from an operation target is sent in a state where a communication function is disabled. To do.
A remote controller 3 transmits a remote control signal having a transmission code corresponding to a video output device 1 or a video display device 2 to be operated to a receiving unit 14 of the video output device 1. When the video output device 1 receives a remote signal having a transmission code corresponding to the video display device 2 in a state where the communication function of the CEC signal control unit 12 is enabled, the video output device 1 displays the operation key indicated by the remote control signal as a video. Output to the display device 2. In addition, when a remote control signal having a transmission code corresponding to the video display device 2 is received in a state where the communication function of the CEC signal control unit 12 is set to be invalid, a notification screen for informing the fact is displayed as a video. The data is output to the device 2 and displayed on the display unit 28.
[Selection] Figure 1

Description

  The present invention relates to a video output device and a video display device that display an error when a remote control signal having a transmission code corresponding to a device different from an operation target is sent in a state where a communication function is disabled.

  In recent years, in a system composed of a plurality of devices, in order to eliminate the trouble of operating each remote control device (remote controller, hereinafter referred to as a remote controller) dedicated to each device, the plurality of devices are switched and remotely operated. Multi-remote control that can be used has been used. In general, a multi-remote control is provided with a changeover switch for selecting a device to be operated, and after the user switches the changeover switch to a switch position corresponding to the device to be remotely operated, the remote control is operated by remote control. It is configured.

  However, the user forgets to switch the switch of the multi-remote control to the device to be operated, and a remote operation signal (remote control signal, hereinafter referred to as a remote control signal) having a transmission code that does not correspond to the operation target from the multi-remote control. May be sent to other devices. In this case, since the operation target device does not accept the remote control signal, the user may erroneously recognize that the operation target device is malfunctioning. Accordingly, when an electronic device described in Patent Document 1 receives a remote control signal having a transmission code that does not correspond to the operation target device, the electronic device displays an error message to the user that the switch of the remote control is not correctly switched. This prevents the user from erroneously recognizing that the device to be operated is malfunctioning.

  Further, in recent years, a video output device, a video display device, and the like that are connected to each other according to the HDMI (High-Definition Multimedia Interface) standard, which is a digital interface standard for next-generation televisions, have been used. HDMI not only transmits video and audio signals via a single HDMI cable that interconnects devices, but also allows bidirectional transmission of control signals by CEC (Consumer Electronics Control). In a video output device and a video display device in which the link function is valid, when the video output device receives a remote control signal having a transmission code corresponding to the video display device from the multi-remote controller, an HDMI cable is connected based on the received remote control signal. It is possible to control by sending a control signal to the video display device.

In addition, when the video display device receives a remote control signal having a transmission code corresponding to the video output device from the multi-remote controller, a control signal may be sent and controlled to the video output device via the HDMI cable based on the received remote control signal. Is possible. As a result, when the link function is valid, the video output device and the video that allow the user to remotely operate a desired device regardless of whether the changeover switch of the multi-remote control is correctly switched to the operation target. A display device is provided.
JP 2005-51310 A

  However, when the electronic device described in Patent Document 1 is used for a video output device and a video display device in which the link function is disabled, the error display function operates correctly, but the link function is enabled. However, there is a problem that an error is displayed when a remote control signal having a transmission code that does not correspond to the operation target device is sent even though the remote control is possible regardless of the switch position of the changeover switch. .

  The present invention has been made in view of such circumstances, and when a transmission code included in a remote operation signal corresponds to a video display device in a state in which the communication unit is disabled, a notification screen for informing that fact is displayed as a video. By providing an output means for outputting to the apparatus, a video output apparatus having a link function for controlling the video display apparatus and a function for displaying an error on the video display apparatus when the multi-remote control changeover switch is not switched to the operation target is provided. The purpose is to do.

  In addition, when the transmission code included in the remote operation signal corresponds to the video output device in a state where the communication unit is disabled, the link function for controlling the video output device is provided with a notification unit that displays a notification screen to that effect. An object of the present invention is to provide a video display device having a function of displaying an error when a changeover switch of a multi-remote control is not switched to an operation target.

  A video output device according to the present invention includes a communication unit that communicates with a video display device, a setting unit that enables or disables the communication function of the communication unit, and a remote operation signal that includes a transmission code for identifying an operation target And a determination means for determining whether or not a transmission code included in the remote operation signal received by the reception unit corresponds to the video display device, and the setting unit enables the communication function. In the video output device that controls the video display device based on a remote operation signal received by the receiving unit when the determination unit determines that the transmission code corresponds to the video display device in the set state. When the determination unit determines that the transmission code corresponds to the video display device with the communication unit disabled, the operation target of the remote operation signal is the Characterized in that it comprises an output means for outputting a notification screen for notifying an image display device.

  In the present invention, the communication unit of the video output device is configured to be communicable with the video display device, and the communication function of the communication unit is configured to be set to either valid or invalid. A remote operation signal having a transmission code corresponding to the video output device or video display device to be operated is transmitted from the remote operation device to the receiving unit of the video output device. When the video output device receives a remote operation signal having a transmission code corresponding to the video display device in a state where the communication function of the communication unit is enabled, the video output device communicates with the communication unit based on the received remote operation signal. The video display device is controlled using the function. In addition, when a remote operation signal having a transmission code corresponding to the video display device is received with the communication function of the communication unit set to invalid, the video display device cannot be controlled and an error message is displayed. Is displayed on the video display device.

  The video output device according to the present invention is characterized in that the communication unit uses CEC of the HDMI standard.

  In the present invention, the video output device is provided, and the video display device is controlled by the CEC signal transmitted from the communication unit conforming to the HDMI standard to the video display device.

  A video display device according to the present invention includes a communication unit that communicates with a video output device, a setting unit that enables or disables the communication function of the communication unit, and a remote operation signal that includes a transmission code for identifying an operation target And a determination means for determining whether or not a transmission code included in the remote operation signal received by the reception unit corresponds to the video output device, and the setting unit enables the communication function In the video display device that controls the video output device based on a remote operation signal received by the receiving unit when the determination unit determines that the transmission code corresponds to the video output device in the set state, the setting When the determination unit determines that the transmission code corresponds to the video output device with the communication unit disabled, the operation target of the remote operation signal is the Characterized in that it comprises a display means for displaying a notification screen for notifying that an image output device.

  In the present invention, the communication unit of the video display device is configured to be communicable with the video output device, and the communication function of the communication unit can be set to either valid or invalid. A remote operation signal having a transmission code corresponding to the video output device or video display device to be operated is transmitted from the remote operation device to the receiving unit of the video display device. When the video display device receives a remote operation signal having a transmission code corresponding to the video output device in a state where the communication function of the communication unit is enabled, the video display device performs communication of the communication unit based on the received remote operation signal. The video output device is controlled using the function. In addition, when a remote operation signal having a transmission code corresponding to the video output device is received with the communication function of the communication unit set to invalid, the video output device cannot be controlled and an error message is displayed. A notification screen for notifying is displayed.

  The video display device according to the present invention is characterized in that the communication unit uses CEC of the HDMI standard.

  In the present invention, the video output device is provided, and the video output device is controlled by the CEC signal transmitted from the communication unit conforming to the HDMI standard to the video output device.

  In the present invention, when it is determined that the transmission code included in the remote operation signal corresponds to the video display device in a state where the communication unit is set to be invalid, a notification screen for notifying the fact is output to the video display device. To provide a video output device having a link function for controlling a video display device by providing an output means, and a function for displaying an error on the video display device when the changeover switch of the multi-remote control is not switched to an operation target. Is possible.

  In addition, when it is determined that the transmission code included in the remote operation signal corresponds to the video output device in a state where the communication unit is set to be invalid, the video output is provided by displaying a notification screen for notifying that effect. It is possible to provide a video display device having a link function for controlling the device and a function for displaying an error when the changeover switch of the multi-remote control is not switched to the operation target.

Embodiment 1
Hereinafter, the first embodiment will be specifically described with reference to the drawings showing the embodiment. FIG. 1 is a block diagram showing an internal configuration of a video output device, a video display device, and a remote control according to the first embodiment. In the figure, reference numerals 1 and 2 denote a video output device such as a video recorder and a video display device such as a television receiver, which are connected to each other via the HDMI cable 4. In the figure, reference numeral 3 denotes a remote control (remote operation device) for remotely operating the video output device 1 and the video display device 2. The video output device 1 supplies a video signal to the video display device 2, a video signal output unit 11 that outputs a video signal related to the program guide screen and the notification screen, a CEC signal control unit 12 that controls transmission and reception of the CEC signal, and the video display device 2. And an HDMI communication unit 13 that transmits and receives CEC signals to and from the video display device 2.

  The video signal output unit 11 is configured to output a video signal related to a program guide screen and a notification screen to the video display device 2 when a program guide mode described later is set in the video output device 1. The video output apparatus 1 includes a receiving unit 14 that receives a remote control signal (remote operation signal) from the remote controller 3 and a decoding unit 15 that decodes a transmission code included in the received remote control signal. The remote control signal has a video output device code corresponding to each of the video output device 1 and the video display device 2 or a transmission code including a video display device code. The decoding unit 15 determines whether the transmission code included in the remote control signal is the video output device code or the video display device code, decodes the remote control signal based on the determination result, and operates the operation key indicated by the remote control signal. Configured to get.

  The video output device 1 further includes a CPU (Central Processing Unit) 10. The CPU 10 receives a video signal output unit 11, a CEC signal control unit 12, a decoding unit 15, and a RAM (Random Access Memory) via a bus 10 a. ) 16 and a ROM (Read-Only Memory) 17. The decoding unit 15 gives the CPU 10 the determination result of the operation code indicated by the remote control signal and the transmission code of the remote control signal via the bus 10a. Further, the CPU 10 reads out a program stored in advance in the ROM 17 to the RAM 16 and executes it, thereby controlling the operation of each hardware part in the video output device 1 and realizing various software functions. In addition to the control program read from the ROM 17, the RAM 16 is configured to store temporary data generated when the CPU 10 performs control processing or arithmetic processing of each unit.

  The video display device 2 is supplied with video signals from the video signal output unit 21 that outputs video signals related to the program guide screen and the notification screen, the CEC signal control unit 22 that controls transmission and reception of CEC signals, and the video output device 1. In addition, an HDMI communication unit 23 that transmits and receives CEC signals to and from the video output apparatus 1 and a display unit 28 that displays video signals are provided. The video signal output unit 21 is configured to output a video signal related to the program guide screen and the notification screen to the display unit 28 when a program guide mode to be described later is set in the video display device 2. When the video signal is given from the video output device 1, the display unit 28 displays the program guide screen and the notification screen output from the video output device 1, and when the video signal output unit 21 outputs the video signal, the video signal is displayed. The program guide screen and the notification screen output by the output unit 21 are displayed.

  The CEC signal control unit 12 and the HDMI communication unit 13 of the video output device 1 and the CEC signal control unit 22 and the HDMI communication unit 23 of the video display device 2 are linked functions for operating the video output device 1 and the video display device 2 with each other. (Communication function) is realized. The CEC signal control units 12 and 22 are configured so that the user can switch between valid and invalid of the communication function related to the link function. The link function in the video output device 1 and the video display device 2 is set to be valid when the communication functions of the CEC signal control units 12 and 22 are both switched to valid. When the link function is set to be valid, the setting state of the program guide mode of each device and the operation keys indicated by the received remote control signal can be transmitted and received mutually. Regardless of whether the link function is enabled or disabled, the video signal output from the video output device 1 is supplied to the video display device 2 via the HDMI communication unit 13.

  Furthermore, the video display device 2 includes a receiving unit 24 that receives a remote control signal from the remote controller 3 and a decoding unit 25 that decodes the received remote control signal. The decoding unit 25 determines whether the transmission code included in the remote control signal is a video output device code or a video display device code, decodes the remote control signal based on the determination result, and obtains an operation key indicated by the remote control signal It is configured to do. Further, the video display device 2 includes a CPU 20, and via a bus 20a, a video signal output unit 21, a CEC signal control unit 22, a decoding unit 25, a RAM (Random Access Memory) 26, and a ROM (Read-Only Memory). 27). The decoding unit 25 gives the CPU 20 the determination result of the operation code indicated by the remote control signal and the transmission code of the remote control signal via the bus 20a.

  The CPU 20 reads out a program stored in advance in the ROM 27 to the RAM 26 and executes it, thereby controlling the operation of each hardware unit in the video display device 2 and realizing various software functions. In addition to the control program read from the ROM 27, the RAM 26 is configured to store temporary data generated when the CPU 20 performs control processing or arithmetic processing of each unit. The remote control 3 includes a transmission unit 34 that transmits a remote control signal using infrared rays to the reception unit 14 of the video output device 1 and the reception unit 24 of the video display device 2, and remotely connects the video output device 1 or the video display device 2. It can be operated from.

  In addition, the remote controller 3 includes a changeover switch 31 that switches the video output device 1 or the video display device 2 to be operated, and an operation unit 32 that receives an operation by a user. Further, the remote controller 3 encodes an operation signal corresponding to the operation received by the operation unit 32 into a video output device code or a video display device code corresponding to the video output device 1 or the video display device 2 switched by the changeover switch 31. The conversion unit 33 is provided. The transmission unit 34 is configured to transmit the encoded remote control signal. In the first embodiment, an example is shown in which the video output device 1 and the video display device 2 each having a program guide mode are connected, and the receiving unit 14 of the video output device 1 is configured to receive a remote control signal. The operation for receiving the operation key indicated by the remote control signal will be described.

  The video output device 1 sets the program guide mode when the received remote control signal has the video output device code and indicates the operation of the program key provided in the operation unit of the remote control 3. The video output device 1 set to the program guide mode outputs the program guide screen to the video display device 2 and displays it on the display unit 28. Also, the video output device 1 sets the video display device 2 to the program guide mode when the received remote control signal has a video display device code and indicates an operation of a program key provided in the operation unit of the remote control 3. To set. The video display device 2 set to the program guide mode displays the program guide screen on the display unit 28. Here, the operation for receiving the operation key indicated by the remote control signal received with the program guide mode set to the video output device 1 or the video display device 2 will be described in the case where the link function is set to be valid.

  FIG. 2 is a schematic diagram illustrating an example of a program guide screen according to the first embodiment. In the example shown in FIG. 2, the title “program guide” indicating that it is a program guide screen and the channel 1 (CH1) to channel 3 (CH3) of the television broadcast wave between 10:00 am and 12:00 am A program table composed of program names of the programs broadcasted on is displayed. Further, the cursor is positioned on the program name of the program having the program name “domestic news”, and the program name is highlighted. Further, a message “video output device side” indicating that the program guide screen is output from the video output device 1 set to the program guide mode is displayed. When the program guide screen is displayed by the video display device 2 set in the program guide mode, the message “video display device side” is displayed in place of the message “video output device side” shown in FIG. Is done.

  In the video output device 1, when the remote control signal received in the state where the program guide mode is set has a video output device code and indicates a valid operation key for the program guide screen, the operation key Accept. For example, when the operation key indicated by the remote control signal is a cursor key preset as an effective key for the program guide screen, the video output device 1 accepts the cursor key and displays the program guide screen shown in the example of FIG. Move the cursor displayed at. When the received remote control signal has a video display device code, the video output device 1 outputs an operation key indicated by the remote control signal to the video display device 2. The video display device 2 accepts the operation key when the operation key given from the video output device 1 in the state set to the program guide mode is an operation key effective for the program guide screen. Next, an operation for receiving an operation key indicated by a remote control signal received with the program guide mode set to the video output device 1 or the video display device 2 will be described in the case where the link function is set to be invalid.

  FIG. 3 is a schematic diagram illustrating an example of a notification screen according to the first embodiment. In the video output device 1, when the remote control signal received in the state where the program guide mode is set has a video output device code and indicates a valid operation key for the program guide screen, the operation key Accept. Also, if the remote control signal received with the program guide mode set has a video display device code and indicates a valid operation key for the program guide screen, the operation target will be displayed incorrectly. Since it is the device 2, a notification screen for notifying that the changeover switch 31 of the remote controller 3 is switched to the video output device side is output to the video display device 2. In the example shown in FIG. 3, a notification screen is shown in which the message “Please switch the remote control switch to the video output device” is superimposed on the program guide screen.

  FIG. 4 is a flowchart showing a procedure of operation key reception processing indicated by the remote control signal according to the first embodiment. The CPU 10 of the video output device 1 determines whether or not the receiving unit 14 has received a remote control signal (step S11). When determining that the remote control signal has been received (YES in step S11), the CPU 10 determines whether the received remote control signal indicates a program key (step S12). When the CPU 10 determines that the remote control signal indicates a program key (YES in step S12), the CPU 10 executes an output side mode setting process for setting the program guide mode and the like (step S13).

  The CPU 20 of the video display device 2 executes a display-side mode setting process (to be described later) for setting the program guide mode according to the output-side mode setting process executed by the CPU 10 (step S14). If the CPU 10 of the video output device 1 determines that the received remote control signal does not indicate a program key in step 12 for determining whether or not the received remote control signal indicates a program key (NO in step S12), the link function is enabled. It is determined whether it is set (step S15). If the CPU 10 determines that the link function is enabled (YES in step S15), the CPU 10 communicates with the video display device 2 and accepts an operation key indicated by the remote control signal, which will be described later. Processing is executed (step S16). The CPU 20 of the video display device 2 executes a display side communication process described later in accordance with the output side communication process executed by the CPU 10 (step S17).

  The CPU 20 determines whether or not the power of the video display device 2 has been turned off by detecting a power off signal that is output when a power switch (not shown) is turned off (step S18). If the CPU 20 determines that the power is turned off (YES in step S18), the acceptance process is terminated. If it is determined that the power is not turned off (NO in step S18), the CPU 20 returns the process to step S14 in which the display side mode setting process is executed in accordance with the output side mode setting process. The CPU 10 of the video output device 1 detects a power-off signal that is output when a power switch provided in the video output device 1 (not shown) is turned off, after step S16 for executing output side communication processing. Thus, it is determined whether or not the power of the video output device 1 has been turned off (step S20). When it is determined that the power is turned off (YES in step S20), the CPU 10 ends the reception process.

  If it is determined that the power is not turned off (NO in step S20), the CPU 10 returns the process to step S11 for determining whether or not a remote control signal has been received. If the CPU 10 determines in step S15 that determines whether or not the link function is enabled (NO in step S15), the CPU 10 receives an operation key indicated by the remote control signal, which will be described later. The output side acceptance process is executed (step S19), and the process proceeds to step S20 for determining whether or not the power is turned off. Further, when determining that the remote control signal is not received (NO in step S11), the CPU 10 determines whether or not the power is turned off in the step S11 for determining whether or not the remote control signal is received. The processing is moved to S20.

  FIG. 5 is a flowchart showing a procedure of output-side mode setting processing and display-side mode setting processing according to the first embodiment. The CPU 10 of the video output device 1 determines whether or not the transmission code included in the received remote control signal is a video output device code (step S21). If the CPU 10 determines that it is not a video output device code (NO in step S21), it instructs the video display device 2 to set the program guide mode (step S22). The CPU 20 of the video display device 2 sets the program guide mode according to the instruction (step S23), and displays the program guide screen on the display unit 28 (step S24). The CPU 10 of the video output device 1 stores the setting state of the program guide mode of the video display device 2 in the RAM 16 (step S25), and ends the output side mode setting process.

  If the CPU 10 determines that the transmission code included in the received remote control signal is a video output device code in step S21 (YES in step S21), the CPU 10 sets the program guide mode. (Step S26). CPU10 outputs the video signal which concerns on a program schedule screen to the video display apparatus 2 (step S27). The CPU 10 of the video output device 1 outputs the setting state of the program guide mode of the video output device 1 set to the program guide mode to the video display device 2 (step S28), and ends the output side mode setting process. The CPU 20 of the video display device 2 stores the given program table mode setting state of the video output device 1 in the RAM 26 (step S29), and ends the display-side mode setting processing.

  FIG. 6 is a flowchart showing a procedure of output side communication processing and display side communication processing according to the first embodiment. The CPU 10 of the video output device 1 determines whether or not the transmission code included in the received remote control signal is a video output device code (step S31). If the CPU 10 determines that the video output device code is used (YES in step S31), the CPU 10 determines whether or not the program guide mode is set (step S32). When it is determined that the program guide mode is set (YES in step S32), the CPU 10 determines whether or not the operation key indicated by the remote control signal is a valid key that is set to be valid in advance for the program guide screen. Determination is made (step S38). When determining that the key is not a valid key (NO in step S38), the CPU 10 ends the output side communication process. If the CPU 10 determines that the key is a valid key (YES in step S38), it accepts the operation key indicated by the remote control signal (step S39), and ends the output side communication process.

  When determining that the program guide mode is not set in step S32 for determining whether or not the program guide mode is set (NO in step S32), the CPU 10 stores the video display device 2 stored in the RAM 16. The setting state is read to determine whether or not the video display device 2 is set to the program guide mode (step S33). When determining that the video display device 2 is not set to the program guide mode (NO in step S33), the CPU 10 ends the output side communication process. If the CPU 10 determines that the video display device 2 is set to the program guide mode (YES in step S33), the CPU 10 outputs an operation key indicated by the remote control signal to the video display device 2 (step S34), and performs output side communication processing. Exit.

  The CPU 20 of the video display device 2 acquires the operation key sent from the video output device 1 (step S35). The CPU 20 determines whether or not the acquired operation key is a valid key (step S36). When determining that the key is not a valid key (NO in step S36), the CPU 20 ends the display side communication process. If the CPU 10 determines that the key is a valid key (YES in step S36), the CPU 10 accepts the acquired operation key (step S37) and ends the display-side communication process. When determining that the transmission code included in the received remote control signal is a video output device code in step S31, the CPU 10 determines that the video display device 2 is not a video output device code (NO in step S31). The processing moves to step S33 for determining whether or not the table mode is set.

  FIG. 7 is a flowchart showing the procedure of the output side reception process according to the first embodiment. The CPU 10 of the video output device 1 determines whether or not the program guide mode is set (step S41). When determining that the program guide mode is set (YES in step S41), the CPU 10 determines whether or not the operation key indicated by the remote control signal is a valid key (step S42). If the CPU 10 determines that the key is a valid key (YES in step S42), the CPU 10 determines whether the transmission code included in the remote control signal is a video display device code or a video output device code (step S43).

  If the CPU 10 determines that the transmission code is a video output device code (“video output device” in step S43), it accepts the operation key indicated by the remote control signal (step S44), and ends the output side reception process. If the CPU 10 determines that the transmission code is a video display device code (“video display device” in step S43), the CPU 10 outputs a notification screen to the video display device 2 (step S45), and ends the output side reception process. When it is determined in step S41 that determines whether or not the program guide mode is set (NO in step S41), the CPU 10 determines whether or not it is a valid key in step S42. In any case where it is determined that it is not (NO in step S42), the output side reception process is terminated.

  Even when the switch position of the switch 31 of the remote control is erroneously switched to the video display device 2 different from the operation target, the video output device 1 displays the operation key indicated by the remote control signal having the video display device code. By outputting to the device 2, the video display device 2 can be operated. Further, only when the link function is set to be invalid, the link function is set to be valid by displaying a notification screen informing that the changeover switch 31 is not correctly switched to the operation target, and the switch of the changeover switch Although the remote operation is possible regardless of the position, the notification screen is not displayed. In the first embodiment, an operation key related to the program guide screen is shown. However, the operation key is not limited to the program guide screen, and an operation screen for receiving an operation related to the video output device 1 or the video display device 2 is used. I just need it.

Embodiment 2
The second embodiment is configured such that the remote control signal is received by the video display device 2 while the remote control signal is received by the video output device 1 in the first embodiment. . The video display device 2 sets the program guide mode when the received remote control signal has the video display device code and indicates the operation of the program key provided in the operation unit of the remote control 3. The video display device 2 set to the program guide mode displays the program guide screen on the display unit 28. Further, the video display device 2 sets the video output device 1 to the program guide mode when the received remote control signal has a video output device code and indicates an operation of a program key provided in the operation unit of the remote control 3. To set. The video output device 1 set to the program guide mode outputs the program guide screen to the video display device 2 and displays it on the display unit 28. Here, the operation for receiving the operation key indicated by the remote control signal received with the program guide mode set to the video output device 1 or the video display device 2 will be described in the case where the link function is set to be valid.

  When the remote control signal received in the state where the program guide mode is set has a video display device code and indicates a valid operation key for the program guide screen, the video display device 2 Accept. When the received remote control signal has a video output device code, the video display device 2 outputs an operation key indicated by the remote control signal to the video output device 1. When the operation key given from the video display device 2 is an effective operation key for the program guide screen while the program guide mode is set, the video output device 1 accepts the operation key. Next, an operation for receiving an operation key indicated by a remote control signal received with the program guide mode set to the video output device 1 or the video display device 2 will be described in the case where the link function is set to be invalid.

  When the remote control signal received in the state where the program guide mode is set has a video display device code and indicates a valid operation key for the program guide screen, the video display device 2 Accept. Also, if the remote control signal received with the program guide mode set has a video output device code and indicates a valid operation key for the program guide screen, the operation target will be output incorrectly. Since it is the device 1, a notification screen for notifying that the changeover switch 31 of the remote controller 3 is switched to the video display device side is displayed on the display unit 28. For example, the notification screen may be a message obtained by replacing the message displayed on the notification screen shown in FIG. 3 with “Please switch the remote control switch to the video display device side.”

  FIG. 8 is a flowchart showing a procedure of operation key reception processing indicated by the remote control signal according to the second embodiment. The CPU 20 of the video display device 2 determines whether or not the receiving unit 24 has received a remote control signal (step S51). When it is determined that the remote control signal has been received (YES in step S51), the CPU 20 determines whether or not the received remote control signal indicates a program key (step S52). If the CPU 20 determines that the remote control signal indicates a program key (YES in step S52), the CPU 20 executes a display-side mode setting process (to be described later) for setting the program guide mode and the like (step S53).

  The CPU 10 of the video output apparatus 1 executes an output side mode setting process to be described later for setting the program guide mode in accordance with the display side mode setting process executed by the CPU 20 (step S54). When the CPU 20 of the video display device 2 determines that the received remote control signal indicates a program key in step 52 (NO in step S52), the link function is enabled. It is determined whether it is set (step S55). If the CPU 20 determines that the link function is enabled (YES in step S55), the CPU 20 communicates with the video output device 1 and accepts an operation key indicated by the remote control signal, which will be described later. Processing is executed (step S56). The CPU 10 of the video output device 1 executes an output side communication process described later in accordance with the display side communication process executed by the CPU 20 (step S57).

  The CPU 10 determines whether or not the power of the video output device 1 has been turned off by detecting a power off signal that is output when a power switch (not shown) is turned off (step S58). If the CPU 10 determines that the power has been turned off (YES in step S58), the acceptance process ends. When determining that the power is not turned off (NO in step S58), the CPU 10 returns the process to step S54 in which the output side mode setting process is executed according to the display side mode setting process. The CPU 20 of the video display device 2 detects a power-off signal output when a power switch provided in the video display device 2 (not shown) is turned off after step S56 for executing the display-side communication process. Thus, it is determined whether or not the power of the video display device 2 has been turned off (step S60). If the CPU 20 determines that the power has been turned off (YES in step S60), the acceptance process ends.

  When it is determined that the power is not turned off (NO in step S60), the CPU 20 returns the process to step S51 for determining whether or not a remote control signal has been received. When determining in step S55 that determines whether or not the link function is set to be effective (NO in step S55), the CPU 20 receives an operation key indicated by the remote control signal, which will be described later. The display side reception process is executed (step S59), and the process proceeds to step S60 for determining whether or not the power is turned off. In step S51 for determining whether or not a remote control signal has been received, CPU 20 determines whether or not the power has been turned off if it is determined that no remote control signal has been received (NO in step S51). The processing is moved to S60.

  FIG. 9 is a flowchart illustrating a procedure of output-side mode setting processing and display-side mode setting processing according to the second embodiment. The CPU 20 of the video display device 2 determines whether or not the transmission code included in the received remote control signal is a video display device code (step S61). If the CPU 20 determines that it is not a video display device code (NO in step S61), it instructs the video output device 1 to set the program guide mode (step S62). The CPU 10 of the video output device 1 sets the program guide mode in accordance with the instruction (step S63), outputs the program guide screen to the video display device 2, and displays it on the display unit 28 (step S64). The CPU 20 of the video display device 2 stores the setting state of the program guide mode of the video output device 1 instructing the program guide mode in the RAM 26 (step S65), and ends the display-side mode setting process.

  If the CPU 20 determines that the transmission code included in the received remote control signal is a video display device code in step S61 (YES in step S61), the CPU 20 sets the program guide mode. (Step S66). CPU20 displays a program schedule screen on the display part 28 (step S67). The CPU 20 of the video display device 2 outputs the setting state of the program guide mode to the video output device 1 (step S68), and ends the display side mode setting process. The CPU 10 of the video output device 1 stores the given program guide mode setting state of the video display device 2 in the RAM 16 (step S69), and ends the output side mode setting processing.

  FIG. 10 is a flowchart illustrating a procedure of output side communication processing and display side communication processing according to the second embodiment. The CPU 20 of the video display device 2 determines whether or not the transmission code included in the received remote control signal is a video display device code (step S71). If the CPU 20 determines that the video display device code is selected (YES in step S71), the CPU 20 determines whether the program guide mode is set (step S72). If the CPU 20 determines that the program guide mode is set (YES in step S72), the CPU 20 determines whether or not the operation key indicated by the remote control signal is an effective key that is set in advance to the program guide screen. Determination is made (step S78). When determining that the key is not a valid key (NO in step S78), the CPU 20 ends the display side communication process. If it is determined that the key is a valid key (YES in step S78), the CPU 20 accepts the operation key indicated by the remote control signal (step S79), and ends the display side communication process.

  If the CPU 20 determines in step S72 that it is determined whether the program guide mode is set or not (NO in step S72), the CPU 20 stores the video output device 1 stored in the RAM 26. The setting state of the program guide mode is read to determine whether or not the video output device 1 is set to the program guide mode (step S73). CPU20 complete | finishes a display side communication process, when it determines with the video output device 1 not being set to the program schedule mode (it is NO at step S73). If the CPU 20 determines that the video output device 1 is set to the program guide mode (YES in step S73), the CPU 20 outputs an operation key indicated by the remote control signal to the video output device 1 (step S74), and performs display side communication processing. Exit. When determining that the transmission code included in the received remote control signal is a video display device code in step S71, the CPU 20 determines that the video output device 1 is not a video display device code (NO in step S71). The processing moves to step S73 for determining whether or not the table mode is set.

  The CPU 10 of the video output device 1 acquires the operation key sent from the video display device 2 (step S75). The CPU 10 determines whether or not the acquired operation key is a valid key (step S76). When determining that the key is not a valid key (NO in step S76), the CPU 10 ends the output side communication process. If the CPU 10 determines that the key is a valid key (YES in step S76), the CPU 10 accepts the acquired operation key (step S77) and ends the output side communication process.

  FIG. 11 is a flowchart showing the procedure of the display side reception process according to the second embodiment. The CPU 20 of the video display device 2 determines whether or not the program guide mode is set (step S81). When it is determined that the program guide mode is set (YES in step S81), the CPU 20 determines whether or not the operation key indicated by the remote control signal is a valid key (step S82). If the CPU 20 determines that the key is a valid key (YES in step S82), it determines whether the transmission code included in the remote control signal is a video display device code or a video output device code (step S83).

  If the CPU 20 determines that the transmission code is a video display device code (“video display device” in step S83), the CPU 20 receives the operation key indicated by the remote control signal (step S84), and ends the display side reception process. If the CPU 20 determines that the transmission code is a video output device code (“video output device” in step S83), the CPU 20 displays a notification screen on the display unit 28 (step S85), and ends the display side reception process. When it is determined in step S81 that determines whether or not the program guide mode is set (NO in step S81), the CPU 20 determines whether or not it is a valid key. In any case where it is determined that it is not (NO in step S82), the display side reception process is terminated.

  Even when the switch position of the remote control changeover switch 31 is erroneously switched to the video output device 1 different from the operation target, the video display device 2 outputs the operation key indicated by the remote control signal having the video output device code. By outputting to the device 1, the video output device 1 can be operated. Only when the link function is set to be invalid, by determining whether the changeover switch 31 is correctly switched to the operation target, the link function is set to be valid and the remote operation is performed regardless of the switch position of the changeover switch. Although it is possible, the notification screen is not displayed.

  In the second embodiment, the operation key related to the program guide screen is received. However, the operation key is not limited to the program guide screen, and the operation screen for receiving the operation related to the video output device 1 or the video display device 2 is used. I just need it. In the second embodiment, the video display device 2 receives the remote control signal. However, the present invention is not limited to this, and the video output device 1 receives the remote control signal and shows the first embodiment. You may comprise so that the operation | movement which performed may be performed. In this case, one of the video output device 1 and the video display device 2 set in advance so that the video output device 1 and the video display device 2 receive the remote control signal substantially simultaneously and do not perform reception processing at the same time. It is preferable to perform the operation key receiving process indicated by the remote control signal on the remote control signal received by the apparatus.

  The second embodiment is configured as described above, and other configurations and operations are the same as those of the first embodiment. Therefore, corresponding parts are denoted by the same reference numerals, and detailed description thereof is omitted.

2 is a block diagram illustrating an internal configuration of a video output device, a video display device, and a remote control according to Embodiment 1. FIG. 6 is a schematic diagram illustrating an example of a program guide screen according to Embodiment 1. FIG. 6 is a schematic diagram illustrating an example of a notification screen according to Embodiment 1. FIG. 5 is a flowchart showing a procedure of operation key reception processing indicated by a remote control signal according to the first embodiment. 6 is a flowchart showing a procedure of output-side mode setting processing and display-side mode setting processing according to the first embodiment. 4 is a flowchart illustrating a procedure of output side communication processing and display side communication processing according to the first embodiment. 4 is a flowchart illustrating a procedure of output side reception processing according to the first embodiment. 6 is a flowchart showing a procedure of operation key reception processing indicated by a remote control signal according to the second embodiment. 12 is a flowchart showing a procedure of output-side mode setting processing and display-side mode setting processing according to the second embodiment. 10 is a flowchart illustrating a procedure of output side communication processing and display side communication processing according to the second embodiment. 10 is a flowchart illustrating a procedure of display-side reception processing according to the second embodiment.

Explanation of symbols

1 Video output device 2 Video display device 3 Remote control 4 HDMI cable 10, 20 CPU
10a, 20a Bus 11, 21 Video signal output unit 12, 22 CEC signal control unit 13, 23 HDMI communication unit 14, 24 Reception unit 15, 25 Decoding unit 16, 26 RAM
17, 27 ROM
28 Display Unit 31 Changeover Switch 32 Operation Unit 33 Encoding Unit 34 Transmitting Unit

Claims (4)

A communication unit that communicates with the video display device, a setting unit that enables or disables the communication function of the communication unit, a reception unit that receives a remote operation signal having a transmission code for identifying an operation target, and the reception Determining means for determining whether or not a transmission code included in a remote operation signal received by the unit corresponds to the video display device, and the setting unit enables the communication function to be set by the determining unit in a state where the communication function is enabled. When it is determined that the transmission code corresponds to the video display device, in the video output device that controls the video display device based on the remote operation signal received by the receiving unit,
When the determination unit determines that the transmission code corresponds to the video display device in a state where the setting unit sets the communication function to be invalid, it indicates that the operation target of the remote operation signal is the video display device. An image output apparatus comprising: output means for outputting a notification screen for notification.   The video output apparatus according to claim 1, wherein the communication unit uses CEC of the HDMI standard. A communication unit that communicates with the video output device, a setting unit that enables or disables the communication function of the communication unit, a reception unit that receives a remote operation signal having a transmission code for identifying an operation target, and the reception Determining means for determining whether or not a transmission code included in a remote operation signal received by the unit corresponds to the video output device, and the setting unit enables the communication function to be set by the determining unit in a state where the communication function is set to be valid. When it is determined that the transmission code corresponds to the video output device, in the video display device that controls the video output device based on the remote operation signal received by the receiving unit,
When the determination unit determines that the transmission code corresponds to the video output device in a state where the setting unit sets the communication function to be invalid, it indicates that the operation target of the remote operation signal is the video output device. A video display device comprising: display means for displaying a notification screen for notification.   The video display device according to claim 3, wherein the communication unit uses CEC of the HDMI standard.

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