KR100943907B1 - Data playback method and recording / playback device and digital broadcast receiver - Google Patents

Abstract

 The present invention relates to a data reproducing method, a recording and reproducing apparatus, and a digital broadcasting receiving apparatus, which can shorten the driving time of an application when reproducing a title including updateable information and prevent an error during reproduction.

Record / Playback Device, Recording Media, Optical Disc, BD, Java, Application, JAR, Update

Description

Data reproducing method, recording and reproducing apparatus and digital broadcasting receiving apparatus {METHOD AND APPARATUS FOR REPRODUCING DATA, AND APPARATUS FOR RECEIVING DIGITAL BROADCAST}

The present invention relates to a data reproducing method, a recording and reproducing apparatus, and a digital broadcasting receiving apparatus, and more particularly, to a data reproducing method, a recording and reproducing apparatus, and a digital broadcasting receiving apparatus for reproducing a title which can be updated via a network stored in a recording medium. It is about.

As a recording medium, an optical disk capable of recording a large amount of data is widely used. Recently, new high-density recording media, for example, Blu-ray Disc (BD), have been developed to record and store high-quality video data and high-quality audio data for a long time.

Blu-ray Disc (BD), a next-generation recording medium technology, is a next-generation optical recording solution that can have data that significantly surpasses a conventional DVD, and is being developed along with other digital devices in recent years.

Various data having different attributes may be recorded on a high density recording medium such as a Blu-ray disc. Examples of such data include titles having moving picture data recorded in MPEG2 format, titles containing information that can be updated through a network connection, titles recorded in a web programming language, and the like.

Of these, when playing a title including information that can be updated through a network connection, for example, a title written in the Java programming language, the application in the recording medium is driven by using a virtual machine included in the recording / playback apparatus. do.

However, when the application is driven using the virtual machine in the recording / reproducing apparatus as described above, it takes a considerable time to execute the application by driving the virtual machine, and the user ejects or ejects the recording / reproducing apparatus. If you operate the power key, etc., there is a high probability of error.

Accordingly, an object of the present invention is to solve the above problems, and an object of the present invention is to reduce the driving time of an application when playing a title including updateable information, and to prevent an error during playback. The present invention provides a recording and reproducing apparatus and a digital broadcasting receiving apparatus.

The present invention provides a data reproducing method between a recording medium, a loaded recording and reproducing apparatus, and a digital broadcast receiving apparatus connected to the recording and reproducing apparatus, wherein the recording and reproducing apparatus is provided in the loaded recording medium. Checking whether an updateable title is included through a network connection; If the title is included in the recording medium, transmitting a signal for driving command of a virtual machine provided in the digital broadcasting receiver to the digital broadcasting receiver; Driving, by the digital broadcasting receiver, a virtual machine provided according to the received driving command signal; Transmitting, by the recording and reproducing apparatus, an application file constituting an application for executing the title to the digital broadcasting receiving apparatus; And driving, by the digital broadcast receiving apparatus, an application corresponding to the received application file by using the driven virtual machine.

The updateable title is a Java title, and the application may be a Java application.

In this case, the virtual machine may be a Java virtual machine. In addition, the recording medium may be a Blu-ray Disc (BD). The application file may be a Java archive (JAR) file.

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On the other hand, the digital broadcast receiver according to the present invention is a memory for receiving and storing an application file constituting an application for execution of an updateable title through a network connection included in a recording medium from the recording medium and the recording and reproducing device loaded. Wow; A virtual machine for driving an application for execution of the title by using the application file stored in the memory; When the driving command signal of the virtual machine is received from the recording / playback apparatus, the virtual machine is driven. When the application file is received from the recording / playback apparatus, the virtual machine is controlled to control an application corresponding to the received application file. It includes a control unit for driving.

On the other hand, the recording and reproducing apparatus according to the present invention comprises: a pickup for reading recorded data by irradiating light onto a recording medium; If the recordable medium includes a title that can be updated through a network connection, a signal for driving a virtual machine provided in an external digital broadcast receiver is transmitted to the digital broadcast receiver and an application for executing the title is provided. And a control unit for transmitting the constituent application file to the digital broadcasting receiver.

The data reproducing method, the recording and reproducing apparatus and the digital broadcasting receiving apparatus according to the present invention have an effect of shortening the driving time of an application when reproducing a title including updateable information and preventing an error during reproduction.

The terminology used in the present invention was selected as a general term that is widely used at present, but in some cases, the term is arbitrarily selected by the applicant, and in this case, the meaning of the term is described in detail in the description of the present invention. The present invention should be understood as meanings other than terms.

Hereinafter, for convenience of explanation, an optical disc, particularly a Blu-ray disc BD, will be described as an example of a recording medium. However, it is obvious that the technical idea of the present invention is equally applicable to other recording media including HD-DVD.

In the following, the recording and reproducing apparatus includes a device capable of recording and reproducing data using a recording medium and all devices capable of reproduction only.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1 is a schematic diagram showing a data reproducing system according to an embodiment of the present invention, showing an example of integrated use between the recording and reproducing apparatus 100 and a peripheral device.

As shown in FIG. 1, the data reproducing system according to the embodiment of the present invention records data on a recording medium 300, and records and reproduces the recording and reproducing apparatus 100, which is configured to reproduce the recorded data. ) And an external source 400 for providing additional data to the recording and reproducing apparatus 100.

The recording and reproducing apparatus 100 is a device capable of recording or reproducing optical discs of various standards. According to the design, only the optical disc of a specific standard can be recorded and reproduced. That is, the recording medium 300 may be a high density recording medium such as HD-DVD or BD.

In addition, the recording and reproducing apparatus 100 may be reproduced without recording, and the recording and reproducing apparatus 100 may be a drive that can be embedded in a computer or the like.

In addition to the function of recording and reproducing data on the recording medium 300, the recording and reproducing apparatus 100 according to an exemplary embodiment of the present invention receives a data signal from an external source 400 and processes the signal and then displays the external display apparatus 200. It has the function of passing it to the screen through the user. In this case, a data signal may be transmitted from an external source 400 through the Internet, and specific data on the Internet may be downloaded and utilized through the recording and reproducing apparatus 100.

Hereinafter, for convenience of description, data recorded in the recording medium is called original data, and data downloaded from the recording medium 300 to the recording / reproducing apparatus 100 from the outside of the recording medium 300 is called additional data. do. This is for convenience of explanation, and the original data and the positional data are only distinguished according to the method of acquiring the respective data, and the original data and the positional data are not necessarily limited to the data of a specific content. Thus, if present outside of the recording medium, any attribute data associated with the original data can be anywhere else.

On the other hand, the external display device 200 includes a virtual machine capable of driving an application stored in the recording medium 300. The external display device 200 may be, for example, a digital broadcast receiver.

Hereinafter, the configuration of the recording / playback apparatus according to the embodiment of the present invention will be described in detail. 2 is a block diagram of a recording / playback apparatus according to an embodiment of the present invention.

As shown in FIG. 2, the recording and reproducing apparatus 100 according to an exemplary embodiment of the present invention includes a pickup 12, a servo 14, a signal processor 16, a memory 18, a microcomputer 20, and a storage device. (22), the AV encoder 24, the AV decoder 26 and the control unit 28.

The pickup 12 irradiates light on the recording medium 300 to reproduce data from the recording medium 300 or to record data on the recording medium 300. The servo 14 controls the operation of the pickup 12.

The signal processor 16 restores the reproduction signal received from the pickup 12 to a desired signal value, or modulates and transmits the signal to be recorded into a signal recorded on the recording medium 300.

The memory 18 stores various kinds of information necessary for data reproduction. The microcomputer 20 controls the operation of the pickup 12, the signal processor 16, the servo 14, and the memory 18.

Throughout the pickup 12, the servo 14, the signal processor 16, the memory 18, and the microcomputer 20, also referred to as a recording / playback section, the recording / playback section can be configured as a single product.

In view of the reproduction, the recording / reproducing section reads the data from the recording medium 300, the memory 18, or the storage 22 under the control of the microcomputer and / or the control unit 28 and provides it to the AV decoder 26. In other words, the recording / playback section serves as a playback section for reading data from the viewpoint of playback.

In view of the recording, the recording / reproducing section is a recording section which receives the signal encoded by the AV encoder 24 and records the clip AV stream and management information about the clip AV stream on the recording medium 300.

The storage 22 is a kind of storage means provided in or connected to the recording / playback apparatus 100, and is a component that a user can arbitrarily store and utilize necessary information and data. Data with persistence may be stored in storage 22.

As the storage 22, a flash memory provided in the recording / playback apparatus 100 may be used. In addition, as the storage 22, a USB memory, an HDD memory, a memory card, or the like, which can be connected to the recording / playback apparatus 100 and can be used, can be used.

The storage 22 is also used as a means for storing data downloaded in association with the recording medium 300. Meanwhile, data read directly from the recording medium 300 may be stored in the storage 22.

The control unit 28 is responsible for controlling all the components in the recording / playback apparatus 100. In addition, the controller 28 determines whether the recording medium 300 includes an updatable title through a network connection, transmits a virtual machine driving command to an external device, and configures an application for executing the updatable title. The pickup is controlled to transmit the application file to the external device. This will be described later.

The control unit 28 and the microcomputer 20 may be provided separately to operate. In addition, the functions of the control unit 28 and the microcomputer 20 may be integrated to operate as one control unit. The controller may be composed of a program (software) and / or hardware provided in the recording / playback apparatus 100.

The AV decoder 26 finally decodes the output data under the control of the controller and provides the same to the user. The AV decoder 26 may include a plurality of decoders according to the type of data.

The AV encoder 24 converts an input signal into a signal of a specific format, for example, an MPEG-2 (MPEG2) transport stream, under the control of a controller to perform a function of recording a signal on an optical disc, and then performs a signal processing unit 16. ).

In addition, the memory 18 is a space for processing various information for reproducing the recording medium 300 and data related to the recording medium 300, iHD, navigation software, various buffers in the optical recording / reproducing apparatus, and operation. It is used as a space for operating system.

3 is a block diagram illustrating an external display device 200 equipped with a virtual machine according to an exemplary embodiment of the present invention. Virtual machines provide a standard application execution environment that ensures the mobility of applications that can be run on any information device.

In FIG. 3, the external display device 200 is a digital broadcast receiver. However, the present invention is not limited thereto. The external display device 200 may be directly connected to the recording / playback device 100 through an interface such as a high definition multimedia interface (HDMI).

The external display device 200 includes a controller 210, a memory 220, and a multimedia system 230. The controller 210, the memory 220, and the multimedia system 230 are connected by a bus 240 inside the external display device 200.

The multimedia system 230 includes a tuner, a demultiplexer, a conditional access system, an MPEG decoder, and various data processors (graphics processor, video processor, audio processor, etc.).

The DTV middleware 222 and the virtual machine 224 reside in the memory 220, and the DTV middleware 222 controls the multimedia system 230. Accordingly, the virtual machine 224 performs the application. The virtual machine 224 loads the application file 226 transmitted from the recording / playback apparatus 100 into the memory 230 and performs the same.

In this case, the virtual machine may be a Java virtual machine. However, the present invention is not limited thereto, and the present invention may be applied to various virtual machines such as Microsoft's Common Language Runtime (CLR) or Virtual Machine such as Smalltalk.

The controller 210 controls overall components of the external display device 200 including the multimedia system 220 and the memory 220. In particular, the controller 210 receives an application driving command from the recording / playback apparatus 100 and controls the virtual machine to drive the application. This will be described in detail in the data reproduction method according to the embodiment of the present invention described later.

Hereinafter, a data reproduction method according to an embodiment of the present invention will be described in detail. 4 is a flowchart illustrating a data reproducing method according to an embodiment of the present invention.

First, when the recording medium is loaded into the recording / reproducing apparatus (S10), it is checked whether the recording medium includes a title which can be updated via a network, for example, a BD-J title (S20).

Here, a title refers to a playback unit forming an interface with a user. Each title is linked to a specific object. In particular, a stream related to the title recorded in the disc is reproduced in accordance with a command or a program in the object.

In addition, BD-J Title enables high interactivity by supporting the update of the title in the recording medium or the connection with the network among the titles in which high-definition video information is recorded by MPEG compression. The title that contains the Java program information.

On the other hand, titles that support seamless multi-angle, multi-story, language credits, director cuts, and the like among titles in which high-definition video information is recorded by MPEG compression in a recording medium are called HDMV titles.

If the recording medium does not include an updatable title such as the above-mentioned BD-J title and only includes the HDMV title, the title is reproduced in the recording / reproducing apparatus (S30).

When the recording medium includes an updateable title, an external device, for example, transmits a driving command of the virtual machine to an external display device such as the digital broadcasting receiver, and the external device receives the driving command and is provided therein. The driven virtual machine is driven (S40). In this case, the virtual machine provided in the external device may be a Java virtual machine capable of running a Java application.

Next, the application file constituting the application for playing the updatable title is transmitted to an external device (S50), and the external device receives it and stores it in a memory provided in the external device.

In this case, the application file may be a Java archive (JAR) file, and various applications may be configured by the JAR file. Java archive (JAR) files are compressed files used to distribute multiple sets of files. JAR files usually contain Java classes files, auxiliary resources, metadata, etc., related to a specific Java program. Can be.

FIG. 5 shows one example of a file structure recorded in a recording medium, for example, a disc such as a BD-ROM according to an embodiment of the present invention. As shown in FIG. 5, in the reproduction management file structure, at least one BDMV directory exists under one root directory, and interactivity with a user is provided in the BDMV directory. The general file (parent file) information for guaranteeing includes an index file (index.bdmv) and an object file (MovieObjet.bdmv).

On the other hand, JAR files (PPPPP.jar, ...) constituting the above application is recorded in the Java directory (JAR). The BD-J object directory (BDJO) also includes a BD-J object file for playing back a BD-J title.

However, the location of files and directories shown in FIG. 5 may be changed in some cases. For example, a directory having a BD-J object directory (BDJO) and a Java directory (JAR) as subdirectories may be separately configured under the root directory, or the Java directory may be configured as a parent directory under the root directory.

Next, the execution command of the application is transmitted to the external device, and in response to the execution command of the application, the external device drives the application using an internal virtual machine driven in advance (S60).

As described above, as the virtual machine provided in the external device is driven in advance, and the application is executed using the external device, the time required for driving the virtual machine when the updateable title is played is shortened.

Meanwhile, the present invention can be applied not only to an external device such as a digital broadcast receiver connected directly to a recording / playback device, but also to an external device having a virtual machine and a recording / playback device connected through a network. In other words, the user selects an external device connected to the network by an IP address to check the external device to be connected to the recording / playback device. By sending an authenticated command to the medium, an application may be driven using a virtual machine of an external device.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings, and the present invention is also provided. Naturally, it belongs to the range of.

1 is a schematic diagram showing a data reproduction system according to an embodiment of the present invention.

2 is a block diagram showing a recording / playback apparatus according to an embodiment of the present invention.

3 is a block diagram showing a digital broadcast receiving apparatus according to an embodiment of the present invention.

4 is a flowchart illustrating a data reproducing method according to an embodiment of the present invention.

5 shows an example of a reproduction management file structure stored in a recording medium.

Claims (17)

A data reproducing method between a recording medium, a loaded recording and reproducing apparatus, and a digital broadcasting receiving apparatus connected to the recording and reproducing apparatus, Checking, by the recording and reproducing apparatus, whether or not an updateable title is included in the loaded recording medium through a network connection; When the title is included in the recording medium, transmitting a signal for driving command of a virtual machine included in the digital broadcasting receiver to the digital broadcasting receiver;  Driving, by the digital broadcasting receiver, a virtual machine provided according to the received driving command signal; Transmitting, by the recording and reproducing apparatus, an application file constituting an application for executing the title to the digital broadcasting receiving apparatus; And And driving, by the digital broadcasting receiver, an application corresponding to the received application file by using the driven virtual machine. According to claim 1, The updateable title is a Java title, and the application is a Java application. The method of claim 2, The virtual machine is a Java virtual machine (JAVA virtual machine) data reproduction method. The method of claim 3, wherein And the recording medium is a Blu-ray Disc (BD). The method of claim 4, wherein And the application file is a JAR (Java archive) file. delete delete A memory for receiving and storing an application file constituting an application for execution of an updateable title through a network connection included in a recording medium from the recording medium and a loaded recording / reproducing apparatus; A virtual machine for driving an application for execution of the title using the application file stored in the memory; And When the driving command signal of the virtual machine is received from the recording / playback apparatus, the virtual machine is driven. When the application file is received from the recording / playback apparatus, the virtual machine is controlled to control an application corresponding to the received application file. And a controller for driving the digital broadcast receiver. delete The method of claim 8, The virtual machine is a Java virtual machine digital broadcast receiver. The method of claim 8, And the recording medium is a Blu-ray Disc. The method of claim 11, wherein The application file is a JAR (Java archive) file digital broadcast receiver. A pickup for reading recorded data by irradiating light onto the recording medium; And If the recordable medium includes a title that can be updated through a network connection, a signal for driving a virtual machine provided in an external digital broadcast receiver is transmitted to the digital broadcast receiver and an application for executing the title is provided. And a control unit for transmitting the constituent application file to the digital broadcasting receiver. delete delete The method of claim 13, And the recording medium is a Blu-ray Disc. The method of claim 16, And the application file is a JAR (Java archive) file.

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