JP2006148942A - Osd display control method, program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an OSD display control method for OSD-displaying a user interface screen indicating the state of a picture recording device corresponding to a user operation on a display device digital-connected to the picture recording device. <P>SOLUTION: A transport stream containing a picture data and data broadcasting contents is acquired (S1), and a state information describing the user interface screen by the same description system as the data broadcasting contents is generated(S2). The generated state information is multiplexed to the transport stream (S3), and the multiplexed transport stream is output to the display device (S4). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a recording apparatus, and more particularly to a technique for displaying a GUI (Graphical User Interface) screen unique to the recording apparatus by OSD (On Screen Display).

Some recording apparatuses indicate an operation state of the recording apparatus using a technique called OSD display in which a GUI screen unique to the recording apparatus is displayed on a connected display apparatus.
Japanese Laid-Open Patent Publication No. 10-191463 discloses a technique in which a plurality of devices are connected via a network such as a LAN and a screen for controlling the other device is displayed on one device.
A conventional recording device for recording analog broadcasting realizes OSD display by superimposing the analog signal GUI screen data on video data that is analog signal of NTSC (National Television System Committee) method and the like and sending it to the display device. is doing. However, in digital broadcasting, a digital signal encoded as video data is used, and the recording apparatus cannot simply superimpose GUI screen data on the video data that is the encoded digital signal.

In order to superimpose an image specific to a recording device on video data that is an encoded digital signal for OSD display, the encoded video data is decoded and further converted into an analog signal. It is necessary to superimpose an image unique to the recording apparatus on the video data.
Japanese Patent Laid-Open No. 10-191463 JP 2001-326870 A

  However, display devices such as a digital television capable of decoding encoded video data are becoming widespread. By incorporating a decoder on the display device side, the recording device does not have a decoder, the price is reduced, video data received by digital broadcasting is recorded (accumulated) as it is, and digital connection is compliant with the IEEE 1394 standard. There is a tendency to specialize in the role of a streamer that directly sends it to a display device via a cable or the like.

In a recording apparatus that does not include such a decoder, there is a problem that a method of decoding an encoded digital signal and superimposing a GUI screen unique to the recording apparatus cannot be used.
Further, in digital broadcasting, data broadcasting is broadcast together with video data, or a plurality of video data is multiplexed and broadcast. These video data have a data structure for realizing a link between video and data broadcasting and a multi-view program which is a service unique to digital broadcasting. However, when video data is converted into an analog signal, the data The structure will be missing. If an analog signal is sent to the display device with the data structure missing, there is a problem that a multi-view program or the like cannot be realized on the display device side.

  SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an OSD display control method, a program, and a recording medium that can display an image unique to a device on a display device without decoding video data of digital broadcasting. And

In order to achieve the above object, a recording medium according to the present invention is a recording medium on which a transport stream is recorded. And is multiplexed.
The OSD display control method according to the present invention includes an acquisition step of acquiring a transport stream including video data and data broadcast content, a reception step of receiving a user operation, a process of writing the transport stream to a recording medium, and A read / write step for executing a process of reading a transport stream from a recording medium in accordance with the user operation; a generation step for generating state information indicating a state of the device according to the user operation in the same description format as the data broadcast content; An output step of outputting the generated state information to a display device via a digital interface.

  A program according to the present invention is a program that causes a computer to execute the following steps: an acquisition step of acquiring a transport stream including video data and data broadcast content; a reception step of receiving a user operation; A read / write step for executing a process for writing a port stream to a recording medium and a process for reading a transport stream from the recording medium in accordance with the user operation, and the computer according to the user operation in the same description format as the data broadcast content It includes a generation step for generating state information indicating a state, and an output step for outputting the generated state information to a display device through a digital interface.

The recording medium according to the present invention has the above configuration, and even when the user performs an operation of reading the transport stream recorded on the recording medium using a playback device that does not have the OSD display function, Based on the multiplexed information, the state of the apparatus according to the user operation is displayed on the display screen by OSD.
Therefore, the user can perform a reproduction operation while referring to the OSD display.

Also, the OSD display control method according to the present invention and the program according to the present invention cause the display device to transmit status information in the same description format as the data broadcast content that can be imaged on the display device, by the above configuration. Can do.
Therefore, on the display device, a screen showing a response to a user operation can be OSD displayed using a function for imaging data broadcast content. Further, since it is not necessary to decode or convert the digital broadcast video data into an analog signal for OSD display, it is possible to use a multi-view program or data broadcast, which is a unique service of digital broadcast, and a recording device. Even if the device does not include a decoder, the state of the device according to the user operation can be displayed on the display device by OSD.

The display device may display a graphic user interface, and the state information may include a control command for controlling at least the graphic user interface that receives the user operation.
Accordingly, it is possible to control reception of a user operation to the recording device via the graphic user interface displayed on the display device.

The data broadcasting content description method may be a description in either a markup language or a device-independent bytecode language.
As a result, a user interface screen showing the state of the recording device according to the user operation can be described in either a markup language or a device-independent bytecode language and output to the display device.

Accordingly, the user interface screen can be imaged by the browser provided in the display device.
The state information generated in the generating step may be a user interface screen description document described in the description method, and may include a hyperlink to the data broadcast content.

Thereby, the screen transition can be made from the user interface screen indicating the state of the recording apparatus according to the user operation to the data broadcast content by the hyperlink.
Accordingly, the user interface screen and the data broadcast content can be selected and displayed without changing the screen layout of the existing data broadcast content.

The OSD display control method further includes a link providing step for providing a hyperlink to the data broadcast content, and the state information generated in the generating step is a user interface screen description document described in the description method. It may be the link destination of the hyperlink.
Thus, the screen transition can be made from the data broadcast content to the user interface screen indicating the state of the recording device according to the user operation by the hyperlink.

Therefore, the user can select and display the user interface screen and the data broadcast content by an operation on the display device.
The output of the status information in the output step may be described in a device-independent bytecode language and may be accompanied by an output to the display device of an application that images the status information.

Accordingly, the state information can be described in a data structure that can be imaged by an application described in a device-independent bytecode language, and the application can be output to the display device together with the state information.
Therefore, an application runs on an application execution engine included in the display device, whereby a user interface screen indicating the state of the device according to a user operation can be imaged.

  The generating step includes a layout acquisition sub-step for acquiring layout information describing a layout of the user interface screen in a markup language, and device information for acquiring device information indicating a state of the device according to the user operation. The generation of the state information in the generation step may be performed by rewriting layout information according to the state indicated by the device information.

Thus, the state information can be easily generated using the layout information that is a template.
Therefore, regardless of the contents transmitted by the transport stream acquired in the acquisition step, the user interface screen indicating the state of the device according to the user operation can be displayed in the OSD with the device-specific layout.

  The device information includes function mode information indicating an operation state of the device, function operation information that is an explanation of an operation method of the user interface screen, and information on the recording medium including the remaining recording capacity of the recording medium. Media information indicating the status, content information indicating the status of the transport stream including the data amount of the transport stream recorded on the recording medium, playback mode information indicating the temporal position being read at the time of reading, The recording mode information indicating a temporal position during writing at the time of writing, or a combination thereof may be used.

Thereby, the user interface screen showing the state of the device according to the user operation can accurately indicate the state of the recording device by including various information.
Further, the reception of the user operation in the reception step may be performed by receiving operation information indicating the user operation from the display device via the digital interface.

As a result, the user can operate the recording device from the viewing display device, and check the status information generated in the recording device in response to the operation on the display device.
Therefore, even when the recording device and the display device are installed in separate rooms, the user does not need to directly operate the recording device.
In the output step, the status information may be incorporated into the data broadcast content and output to a display device.

As a result, the status information can be incorporated into the data broadcast content including the transport stream and sent to the display device.
Therefore, since it is not necessary to decode the digital broadcast video data included in the transport stream for OSD display or convert it into an analog signal, a multi-view program or data broadcast, which is a unique service of digital broadcast, is used. Even when the recording apparatus does not include a decoder for decoding video data, an image unique to the apparatus can be OSD-displayed on the display apparatus.

The data broadcast content is multiplexed into a transport stream in a data carousel method, and the incorporation in the output step is performed by adding status information to the data carousel for transmitting the data broadcast content. Also good.
As a result, the status information can be output to the display device by the data carousel method.

Therefore, after the state information transmitted by the data carousel method is accumulated in the display device, the user can image a screen showing the state of the device according to the user operation at an arbitrary timing.
The addition to the carousel in the output step is to separate the transport stream into a data carousel and an intermediate transport stream, and to create a new data carousel from the data broadcast content and status information included in the separated data carousel. And the incorporation in the output step may include multiplexing the new data carousel and the intermediate transport stream.

  Accordingly, the status information and the data broadcast content can be transmitted together using the data carousel used for transmitting the data broadcast content. The packet group for transmitting video data and the packet group for transmitting the data carousel can be multiplexed by arbitrarily assigning transmission speeds within the bandwidth that can be transmitted by the transport stream, so that the status information is displayed on the display device. Therefore, it is not necessary to change the transmission speed for transmitting the video data.

Therefore, it is possible to display the user interface screen indicating the state of the device according to the user operation on the OSD without causing a problem of the reproduced image due to the transmission delay of the video data.
Further, the multiplexing of the new data carousel and the intermediate transport stream in the output step may be performed with the same bandwidth as the bandwidth of the transport stream obtained in the acquisition step.

As a result, the status information and the data broadcast content can be transmitted together using the bandwidth in which the transport stream transmits the data broadcast content.
Therefore, it is possible to multiplex state information in the transport stream without exceeding the bandwidth capable of transmitting information as the entire transport stream.
In addition, the incorporation by the output step means that the data broadcast content is removed from the data broadcast content and the intermediate transport stream constituting the transport stream, and the status information is multiplexed with the intermediate transport stream. Also good.

  Thereby, the status information can be multiplexed by removing the data broadcast content from the transport stream in which the data broadcast content is multiplexed. Compared to the case where both the data broadcast content and the state information are transmitted by the data carousel method, the carousel cycle can be shortened when only the state information is transmitted by the data carousel method.

Therefore, when the user interface screen indicating the state of the device according to the user operation is updated with the transition of the state of the recording device, the timing for outputting a new user interface screen from the recording device, and a new user in the display device The time lag with the timing at which the interface screen can be imaged can be suppressed.
The transport stream may include a plurality of null packets having no information to be transmitted, and the incorporation by the output step may be replacing the null packets with the state information.

As a result, it is possible to multiplex the state information using the excess bandwidth of the transport stream.
Therefore, it is possible to efficiently multiplex the state information without exceeding the bandwidth capable of transmitting information as the entire transport stream.
Further, the OSD display control method may further include a writing step of recording the transport stream in which the state information is incorporated into the recording medium.

  As a result, a transport stream in which state information is multiplexed can be recorded on a recording medium, and the transport stream recorded on the recording medium is read using a playback device that does not have an OSD display function. In addition, the user interface screen showing the state of the apparatus according to the user operation can be displayed on the display screen by OSD, and the reproduction operation can be performed while referring to the user interface screen.

Embodiments of the present invention will be described below with reference to FIGS.
(Embodiment 1)
<Overview>
The recording apparatus 100 according to the first embodiment describes a user interface screen (hereinafter referred to as GUI screen) using BML (Broadcast Markup Language) to generate a BML file that is state information. The configuration will be described.

<Configuration>
1 TS
First, before describing the recording apparatus 100 according to the present invention, an outline of a digital broadcast transport stream (hereinafter referred to as TS) recorded and reproduced by the recording apparatus 100 will be described.

  FIG. 1 is a schematic diagram of a TS that transmits one program. The TS is a stream in which TS packets, which are fixed-length packets of 188 bytes, are transmitted, and transmits video and audio PES (Packetized Elementary Stream), a data broadcast data carousel, and program specific information. The program specific information is a table indicating which TS packet each of video, audio, and data broadcast data carousel constituting the program is divided into and stored in, and PMT (Program Map Table) and PMT Is a table indicating which TS packet is stored in a PAT (Program Association Table) or the like. In addition, a TS packet for storing program data indicating the program name of the program to be transmitted, the temporal position, and the like is multiplexed in the TS. In digital broadcasting, there are services such as multi-view programs including a plurality of video, audio, and data broadcasts in the same program. However, in this specification, only one video, audio, and data broadcast is transmitted. The embodiment will be described using a TS in which a video PES 310, an audio PES 320, and a data broadcast data carousel 330 are multiplexed with individual bandwidths.

The TS packet is composed of a combination of a 4-byte fixed-length packet header, an adaptation field, and a payload.
The packet header defines information such as PID (Packet Identification) and is included in all TS packets.
The PID is a 2-byte identifier that identifies the type of TS packet. The TS packet storing the video PES 310, the audio PES 320, and the data broadcast data carousel 330 has the same value for each type of stored data. Is set as the PID. Note that the PMT describes the PIDs of TS packets that store the data of the video PES 310, the audio PES 320, and the data broadcast data carousel 330 constituting the program.

The PID of the TS packet storing the PAT is “0x0000”. In this specification, the notation “0x ??” indicates that the value of “???” is a hexadecimal number.
The adaptation field and the payload may be both included in one TS packet, or one of them may be included. The adaptation field is used to transmit information such as a reference time and the packet size of the TS packet. This is an area used for adjustment. The payload is an area in which the video PES 310, the audio PES 320, the data broadcast data carousel 330, the PMT, and the like are divided and stored.

Next, a data broadcast data carousel 330 used for transmission of a GUI screen in the present invention will be described.
The data broadcast data carousel 330 is a unit for repeatedly transmitting data broadcast content according to the data carousel method defined in ISO / IEC13818-6. A module that stores a data broadcast BML file describing the data broadcast content is a predetermined unit. DDB (DownloadDataBlock) divided into a size of 4084 bytes or less, the number of modules transmitted as the data broadcast data carousel 330, and DII (DownloadInfoIndication) indicating information on each module are arranged in an arbitrary order. Has been.

The data broadcasting contents are converted into TS packets and repeatedly transmitted at a fixed carousel cycle, so that the display device can display the data broadcasting screen in response to an operation for calling the data broadcasting at an arbitrary timing by the user. .
In addition, TS packetization of data broadcasting contents means that data broadcasting contents are divided into 184 bytes in order from the beginning, stored in the payload of the TS packet, and a 4-byte packet header is added to the beginning of each payload. The data broadcast content is stored in the TS packet group. If the end of the data broadcast content is less than 184 bytes after division, stuffing is performed using the adaptation field.

Digital broadcast data broadcast contents include BML files, still images (jpeg (Joint Photographic Experts Group), PNG (Portable Network Graphics), audio (AAC-LC (Advanced Audio Coding), and Audio). -C (Audio Interchange File Format) etc. can be included, but in this specification, an embodiment will be described using data broadcasting content in which only a BML file is stored in a module.
2 System Configuration Next, the configuration of the recording / playback system 1 using the recording apparatus 100 according to the present invention will be described.

FIG. 2 is a diagram showing a configuration of a recording / reproducing system 1 using the recording apparatus 100 according to the present invention. The recording / playback system 1 includes an antenna 10, a display device 20, a remote controller 30, and a recording device 100.
The antenna 10 is an antenna that receives a digital broadcasting TS. A TS received by the antenna 10 is multiplexed with a multi-channel television broadcast composed of video data and audio data encoded according to the MPEG-2 standard, and a data broadcast accompanying the television broadcast.

  The display device 20 is a digital television compliant with a digital broadcasting standard established by ARIB (Association of Radio Industries and Businesses). The display device 20 includes an MPEG-2 decoder and a BML browser inside, and can view a television broadcast composed of video and audio, and can also display and display a data broadcast. The display device 20 is further digitally connected to the recording device 100 via a cable conforming to the IEEE 1394 standard, and has a function of sending an AVC command for controlling devices connected by the IEEE 1394 cable to the recording device 100. The BML browser provided in the display device 20 displays the data broadcast as a graphic when a button for calling the data broadcast (hereinafter referred to as D button) is pressed on the remote controller 30. Specifically, upon receiving a notification indicating that the D button has been pressed, the BML browser graphicizes the BML file for initial display in the BML file transmitted by the data carousel method, and starts displaying. The initial display BML file displayed at this time is a BML file transmitted by a TS packet in which a default value (“0x40”) is set in a component tag defined in the digital broadcasting standard. Is a BML file of “startup.bml”.

The remote controller 30 is a remote controller attached to the display device 20, and conforms to the ARIB TR-15 standard. The remote controller 30 is a button for selecting a channel, and an operation button according to the present invention includes a D button, an upper button, a lower button, a left button , Right button, and enter button.
The recording apparatus 100 acquires the TS of the recording target program from the TS received by the antenna 10 at the digital tuner 110, and records the recording TS on the recording medium 130, and the TS recorded on the recording medium 130 as a stream. Is a recording / playback device provided with a playback function for reading out the video and sending it to the display device 20 via the digital interface unit 120.
3 Recording Device Next, the configuration of the recording device 100 will be described. The recording apparatus 100 includes a digital tuner 110, a digital interface unit 120, a recording medium 130, a CPU 140, a ROM 150, and a RAM 160 as hardware configurations.

The digital tuner 110 serving as an acquisition unit acquires a TS that transmits a channel desired by the user from the TS received by the antenna 10.
The digital interface unit 120 is a component that controls data input / output according to the IEEE 1394 standard. The digital interface unit 120 outputs TS to the display device 20 and also functions as a reception unit that receives a user operation using an AVC command from the display device 20.

  The recording medium 130 is a recording medium that can record and read TS of programs broadcast by digital broadcasting, and specifically, is a DVD-RAM, HDD, or the like. The recording medium 130 includes management information for managing the recording capacity, the remaining capacity of the recording capacity, and the like, and for each recorded program, the occupied capacity (recording time), recording date and time, recording mode (recording bit rate), The channel and the like are also managed by the management information.

The CPU 140 functions as a read / write unit that controls the process of writing the TS to the recording medium 130 and the process of reading the TS from the recording medium 130 by reading and executing the recording control software 203 / reproduction control software 204 stored in the ROM 150. To do.
Further, when the CPU 140 reads out and executes the GUI control software 200 stored in the ROM 150, the OSD display of the GUI screen, which is a problem to be solved by the present invention, is realized.
4. Software Configuration Hereinafter, the GUI control software 200 for controlling the OSD display of the GUI screen, which is a problem to be solved by the present invention, will be described in detail.

FIG. 3 is a block diagram showing a functional configuration of the GUI control software 200 that controls the OSD display of the GUI screen. The GUI control software 200 is software that generates a user interface screen description document in which a GUI screen is described in BML, and causes the CPU 140 to execute processing for multiplexing the user interface screen description document, which is a BML file, in the TS. The functional block includes a unit 210, a TS acquisition unit 220, a BML generation unit 230, and a remultiplexing unit 240.
4.1 Control Unit The control unit 210 is a BML file group that describes each of a plurality of types of GUI screens when the operating state of the recording apparatus 100 changes in response to a user operation accepted by the digital interface unit 120. Instructs the BML generation unit 230 to update the GUI data 400. Note that the change in the operating state of the recording apparatus 100 that requires the GUI data 400 to be updated is when the recording apparatus 100 is turned on and during transitions between recording, playback, and standby states. FIG. 4 is a diagram illustrating a relationship between the state transition of the operation state and main BML files updated with the state transition.

As the recording apparatus 100 is turned on, all BML files constituting the GUI data 400 are newly generated.
Along with the transition from the standby state to the recording state, the main menu BML file 410 is updated to a BML file corresponding to the recording state in which only the stop operation menu can be operated.
Along with the transition from the recording state to the standby state, the main menu BML file 410 is updated to a BML file corresponding to the standby state in which only the recording operation menu can be operated, and the program navigation BML file 420 is the target of recording. The program is updated to the BML file added to the program list, and a BML file for reproduction program 430 related to the program to be recorded is newly generated.

Along with the transition from the standby state to the reproduction state, the main menu BML file 410 is updated to a BML file corresponding to the reproduction state in which the operation menus of stop, fast forward, reproduction, and rewind can be operated.
Along with the transition from the reproduction state to the standby state, the main menu BML file 410 is updated to a BML file corresponding to the standby state in which only the recording operation menu can be operated.
4.2 TS Acquisition Unit The TS acquisition unit 220 illustrated in FIG. 3 acquires a display TS (first TS 300) in accordance with the operation state of the recording apparatus 100, and outputs the acquired first TS 300 to the BML generation unit 230. The display TS is a TS read from the recording medium 130 when the recording apparatus 100 is in a reproducing operation, and is a TS output from the digital tuner 110 in other operating states. is there.
4.3 BML Generation Unit The BML generation unit 230 serving as a generation unit that generates state information includes a layout holding unit 231, a device information extraction unit 232, a rewrite unit 233, a BML separation unit 234, and a link adjustment unit 235. A GUI BML file including the GUI screen described in BML is generated, and the generated GUI BML file is output to the remultiplexing unit 240.

  The layout holding unit 231 holds a plurality of layout files in which templates of each GUI screen are described using BML. In each layout file, a description portion whose description contents change according to the state of the recording apparatus 100 is described using an indefinite value. For example, for a menu that accepts focus when the recording apparatus 100 is in the playback state and does not accept focus when the recording device 100 is not in the playback state, a description portion that indicates whether or not the menu accepts focus in the layout file uses an indefinite value. Is described.

The device information extraction unit 232 acquires the following device information indicating the state of the recording device 100 in accordance with an instruction from the control unit 210. The device information includes functional mode information, functional operation information, media information, content information, playback mode information, and recording mode information.
The function mode information is information indicating whether the recording apparatus 100 is currently in recording, playing back, or standby, and includes recording control software 203 that controls recording and playback, and playback control software 204. Get information.

The function operation information is a guidance document for a GUI operation method, and is stored in the ROM 150 in a text format.
The media information includes media type (DVD-RAM, HDD, etc.), recording capacity, usable capacity (remaining recording amount), total number of recorded programs, total recorded program capacity (total recording time) for each medium constituting the recording medium 130. , Information indicating the disk name and media protection setting, and obtained from the management information of the recording medium 130.

  The content information includes information indicating the occupied capacity (recording time), recording date and time, recording bit rate, channel, program name, and program protection setting for each program recorded in the recording medium 130, and a still image representing each program. The information is acquired from the management information of the program recorded on the recording medium 130, and the still image is acquired from each program recorded on the recording medium 130. Note that the still image representing each program may be the top image of the program or other images.

The playback mode information is information indicating the program ID of the program to be played back and the playback time code (temporal position during playback), and is acquired from the program data of the TS being played in response to an instruction from the control unit 210 during playback. To do.
The recording mode information is information indicating a program ID of a program to be recorded and a recording time code (temporal position during recording). The recording mode information is acquired from the program data of the TS being recorded upon receiving an instruction from the control unit 210 during recording. To do.

  The rewriting unit 233 acquires a layout file corresponding to the BML file instructed to be generated from the control unit 210 from the layout holding unit 231, and writes a description portion described using an indefinite value in the acquired layout file to the device The device information acquired from the information extraction unit 232 is rewritten based on the device information to generate a BML file, and the generated BML file is output to the link adjustment unit 235. If the acquired device information includes a still image file related to the BML file, the still image file is output to the link adjustment unit 235 together with the generated BML file.

  The BML separation unit 234 separates the TS packet storing the data carousel 330 for data broadcasting from the first TS 300 acquired from the TS acquisition unit 220, and re-multiplexes the intermediate TS 301 that transmits the video PES 310, the audio PES 320, and the program identification information. To the conversion unit 240. At the same time, the remultiplex unit 240 is notified of the frequency with which the TS packet storing the data broadcast data carousel 330 was included in the first TS 300.

In addition, the BML separation unit 234 acquires a data broadcast BML file describing data broadcast content from the separated TS packet, and changes are made in moduleId and moduleVersion set in the module in the data broadcast data carousel 330. If there is, the acquired data broadcasting BML file is output to the link adjustment unit 235.
The link adjustment unit 235 holds the GUI data 400 including the BML file and the still image file acquired from the rewrite unit 233 and the data broadcast BML file acquired from the BML separation unit 234 on the RAM 160, and the data broadcast BML. When any BML file constituting the file and the GUI data 400 is updated, the data broadcasting BML file and the link of the GUI data 400 are adjusted, and the data broadcasting BML file and the GUI after the link adjustment are completed Data 400 is output to remultiplexing section 240. The adjustment of the link between the data broadcasting BML file and the GUI data 400 is to change the file name of the initial display BML file in the data broadcasting BML file from “startup.bml” to “startup2.bml”. Furthermore, it is described in the BML file constituting the GUI data 400 acquired from the rewrite unit 233 and the link destination of the hyperlink to the BML file for initial display of the data broadcast described in the data broadcast BML file. The link destination of the hyperlink to the data broadcast is set in the BML file for initial display of data broadcast (“startup2.bml”). It should be noted that the file name after the change of the BML file for initial display of the data broadcast is not limited to the above fill name, and other file names can be used as long as the file name does not overlap with other BML files. Also good.

In the present embodiment, when the user presses the D button on the remote controller 30, the GUI initial display screen of the recording device 100 is displayed on the display device 20, but the present invention realizes other embodiments. It is also possible to do. For example, the link adjustment unit 235 changes the file name of the BML file describing the initial display screen of the GUI from “startup.bml” to “startup2.bml” and is described in the BML file constituting the GUI data 400 The link destination of the hyperlink to the GUI initial display screen is set in the BML file (“startup2.bml”) describing the GUI initial display screen, and the data broadcast acquired from the BML separation unit 234 A link button to the GUI screen of the recording apparatus 100 may be additionally described in the BML file for BML using BML. With this configuration, when the D button on the remote controller 30 is pressed, a normal data broadcast screen is initially displayed on the display device 20.
4.4 Remultiplexing Unit The remultiplexing unit 240 that implements the incorporation of the status information into the data broadcast content includes a carousel converting unit 241, a TS packetizing unit 242, and a packet inserting unit 243, and includes a BML generating unit. The plurality of BML files output by the 230 and the TS are multiplexed.

  The carousel converting unit 241 that realizes the addition of the state information to the data carousel modularizes the acquired GUI data 400 and the data broadcasting BML file, and divides the module management information DII and the module into a predetermined size. DDB is generated. Further, the carousel converting unit 241 generates the GUI data carousel 331 by arranging the generated DDB and DII, and outputs them to the TS packetizing unit 242.

The TS packetizing unit 242 converts the GUI data carousel 331 into a TS packet. The TS packetizing unit 242 sets the value specified by the PMT as the PID of the TS packet storing the data broadcast data carousel 330 in the PID of the TS packet to be generated.
The generated TS packet group is stored in the RAM 160 until a new BML file is output from the BML generation unit 230 and the GUI data carousel 331 is updated in the carousel conversion unit 241.

The packet insertion unit 243 obtains the TS packet obtained by dividing the GUI data carousel 331 from the RAM 160, and multiplexes the obtained TS packet with the intermediate TS 301, whereby the video PES 310, the audio PES 320, and the GUI data carousel. 331 and a second TS 302 for transmitting program specifying information are generated.
Here, the packet insertion unit 243 uses the GUI frequency at the frequency notified from the BML separation unit 234, that is, the same frequency as the frequency at which the TS packet storing the data broadcast data carousel 330 is included in the first TS 300. The TS packet storing the data carousel 331 is inserted into the intermediate TS 301. As a result, the GUI data carousel 331 has a longer carousel cycle than the data broadcast data carousel 330, but the second TS 302 output from the packet insertion unit 243 is transmitted to the data broadcast data carousel 330 by the first TS 300. It is possible to transmit the GUI data carousel 331 with the bandwidth that has been used.

  FIG. 5 is a schematic diagram showing the carousel cycle of the data carousel 330 for data broadcasting and the data carousel 331 for GUI. The data broadcast data carousel 330 is composed of a packet group (broadcast BML A1 to A3) obtained by converting a data broadcast BML file describing data broadcast contents into TS packets. The GUI data carousel 331 includes a packet group (GUI BML 1 and 2) obtained by converting the GUI data 400, which is a BML file group describing a GUI screen, into a TS packet, and a data broadcast whose file name is changed by the link adjustment unit 235. It consists of a packet group (broadcast BML B1 to B3) obtained by converting the BML file for use into TS packets.

The GUI data carousel 331 is transmitted with the same bandwidth as the data broadcasting data carousel 330 (the number of transmission packets per unit time), but by increasing the carousel cycle, the GUI data carousel 330 has more bandwidth than the data broadcasting data carousel 330. The amount of data can be transmitted.
With the above configuration, the GUI control software 200 can multiplex a BML file describing a GUI screen into a TS.

The generated second TS 302 is output to the display device 20 by the digital interface unit 120, and the display device 20 can display the GUI screen by the same procedure as the display of the data broadcast screen when the second TS 302 is input. it can.
Note that the recording apparatus 100 according to the present invention may write the second TS generated in the remultiplexing unit to the recording medium by the recording control software 203. As a result, even when the recording medium on which the TS is recorded is read using a playback apparatus that does not have an OSD display function, the GUI screen can be displayed in the OSD manner.
5 BML File Next, details of the BML file for GUI described by the recording apparatus 100 will be described. FIG. 6 is a diagram showing a configuration of GUI data 400 generated by the recording apparatus 100. The GUI data 400 includes a BML file for main menu 410, a BML file for program navigation 420, a BML file for reproduction program 430, a BML file for guidance 440, and a BML file for reservation setting 450, and a BML file for reproduction program 430 and a plurality of still image files. Each BML file is graphicized by the BML browser of the display device 20 and displayed in OSD.

  The main menu BML file 410 is a BML file in which a menu on each GUI screen provided by the recording apparatus 100 is displayed and a main menu screen for operating a program being recorded and reproduced is described in BML. The main menu BML file 410 is an initial display BML file defined in the digital broadcasting standard, and describes a screen that is initially displayed on the display device 20 when the user presses the D button of the remote controller 30. .

The program navigation BML file 420 is a BML file in which a program navigation screen for selecting a target program for managing or reproducing a program recorded on the recording medium 130 is described in BML.
The reproduction program BML file 430 is a BML file in which a reproduction program screen for operating reproduction of each program recorded on the recording medium 130 is described by BML for each program, and is the same number as the number of programs recorded on the recording medium 130. Of BML files.

The guidance BML file 440 is a BML file in which a guidance screen for explaining the operation method of each GUI screen is described in BML. Each of the main menu screen, the program navigation screen, the playback program screen, and the reservation setting screen that calls the guidance screen is used. Are composed of four BML files.
The reservation setting BML file 450 is a BML file in which a reservation setting screen for managing a recording reservation of a program is described in BML.

A description example of a reproduction program BML file 430 is shown below as an example of a GUI BML file. FIG. 7 is a description example of a reproduction program BML file.
The description section 1 is a description section describing the display style of each object displayed on the playback program screen, such as the display position on the screen, the background color, and the key operation to be accepted.
The description part 2 is a description part describing the operation corresponding to the key operation on the playback program screen. The description part 3 describes the issue operation of the AVC command instructing the reproduction, and the issue operation of the AVC command instructing the stop. The description part 4 described is included.

The description part 5 is a description part describing an object to be actually displayed. The transition control to the BML file is described using an anchor element used in a normal markup language.
6 GUI
Next, the configuration and operation method of the GUI described in BML by the recording apparatus 100 will be described. Note that the information actually generated by the recording apparatus 100 is a BML file described using BML, but in this specification, description will be made using an example of a screen graphicized by a BML browser.

The GUI of the recording apparatus 100 is composed of a plurality of screens, and each screen is linked to each other. When the user presses the D button on the remote controller 30, a main menu screen 510 shown in FIG. 8 is displayed on the display device 20.
(Main menu screen)
FIG. 8 is a screen example of the main menu screen 510 in which the main menu BML file 410 is graphicized.

  The main menu screen 510 is a screen obtained by graphicizing the main menu BML file 410, and includes a function mode information display unit 510a indicating an operation state of the recording apparatus 100, an index screen display unit 510b, an operation menu display unit 510c, A recording / playback mode information display unit 510d and a menu display unit 510e including a program navigation menu, a reservation menu, a data broadcast menu, and a help menu are displayed.

  On this screen, any one of the menus of the operation menu display unit 510c and the menus of the menu display unit 510e is focused, and by pressing the right button and the left button of the remote controller 30, By selecting either the operation menu display unit 510c or the menu display unit 510e as an operation target and pressing the upper button and the lower button of the remote control 30, the focus moves to the menu adjacent to the upper and lower sides of the operation target. . The background color when each menu is not focused is green, and the background color of the focused menu changes to yellow.

When the operating state of the recording apparatus 100 is recording or playing back, the function mode information display unit 510a displays “currently recording” or “playing back” to display the current operating state of the recording apparatus 100. Show.
The index screen display unit 510b is an area for displaying the moving image of the video PES 310 that was displayed on the screen of the display device 20 before the D button was pressed. When an image is displayed and recording or standby is in progress, the image of the selected channel is displayed.

The operation menu display unit 510c includes a recording operation menu, a stop operation menu, a fast forward operation menu, a playback operation menu, and a rewind operation menu.
The recording operation menu is a menu for accepting an operation for instructing recording of a channel (TS output from the recording device 100) displayed on the index screen display unit 510b when the operation state of the recording device 100 is in a standby state. In a state where the menu is focused, when the user presses the enter button of the remote controller 30, an AVC command instructing recording of the channel being displayed is sent from the display device 20 to the recording device 100. When the operation state of the recording apparatus 100 is recording or reproducing, the menu is set to a state where the background color is gray and focus is not accepted. Hereinafter, a state where such a menu does not accept focus is referred to as a grayed state.

  The stop operation menu is a menu for accepting an operation for instructing stop of recording or reproduction when the operation state of the recording apparatus 100 is recording or reproducing. The user can control the remote control with the menu focused. By pressing the enter button 30, an AVC command for instructing to stop the operation is sent from the display device 20 to the recording device 100. Note that when the operation state of the recording apparatus 100 is waiting, the menu is set to a grayed state.

  The fast-forward operation menu and the rewind operation menu are menus that accept operations for instructing fast-forward and rewind, respectively, when the operation state of the recording apparatus 100 is being played back. When the user presses the determination button on the remote controller 30 in a state where either one of the menus and the rewind operation menu is focused, the corresponding AVC commands are transmitted from the display device 20 to the recording device 100. When the recording apparatus 100 is in an operation state other than during playback, the menu is set in a grayed state.

  The playback operation menu is a menu that accepts an operation for instructing normal playback of a program that has been specially played (fast forward playback or rewind playback) by operating the fast forward operation menu and the rewind operation menu. When the user presses the enter button on the remote controller 30 in the focused state, an AVC command instructing reproduction is sent from the display device 20 to the recording device 100. When the recording apparatus 100 is in an operation state other than during playback, the menu is set in a grayed state.

The recording / playback mode information display unit 510d displays the recorded program, the program being played, and the occupied capacity of the program being recorded on the bar display indicating the total capacity of the recording medium 130. Further, when the operation state is being reproduced, a triangle indicating the temporal position during reproduction is displayed. FIG. 9 is a diagram showing details of the recording / playback mode information display unit 510d.
The menus of the program navigation menu, the reservation menu, and the help menu of the menu display unit 510e are links in which hyperlinks to the program navigation BML file 420, the reservation setting BML file 450, and the guidance BML file 440 are set, respectively. When the user presses the enter button on the remote controller 30, the BML file to which any of the focused menus is hyperlinked is displayed as a graphic.

The data broadcast menu of the menu display unit 510e is a link menu to the data broadcast screen, and when the user presses the enter button on the remote controller 30 while the menu is focused, the menu is hyperlinked. The existing data broadcasting BML file is displayed as a graphic.
(Program navigation screen)
FIG. 10 is a screen example of the program navigation screen 520 in which the program navigation BML file 420 is graphicized.

The program navigation screen 520 is a screen obtained by graphicizing the program navigation BML file 420, and displays a content information list display section 520a and a menu display section 520b including a selection menu, a return menu, and a help menu.
On the screen, any one of the programs displayed in the list on the content information list display unit 520a and any one of the menus on the menu display unit 520b are focused. By pressing the up and down buttons, the focus of the program displayed in the list on the content information list display unit 520a moves up and down, and by pressing the left and right buttons on the remote control 30, left and right The focus moves to the adjacent menu. The background color of the focused program and menu changes.

The content information list display unit 520a displays a list of all programs recorded on the recording medium 130, and displays the content information extracted by the device information extraction unit 232 for each program.
The selection menu of the menu display unit 520b is a BML file for a reproduction program related to a program focused on the content information list display unit 520a when the user presses the enter button on the remote controller 30 with the menu focused. A link menu 430 is displayed as a graphic. In the content information list display unit 520a, when a program that is currently being played is selected, the user presses the enter button on the remote controller 30 while the menu is focused, so that the main menu BML file is displayed. 410 is graphicized.

Each menu of the return menu and the help menu of the menu display unit 520b is a link menu in which hyperlinks are set to the main menu BML file 410 and the guidance BML file 440, respectively. By pressing, the BML file to which any of the focused menus is hyperlinked is displayed as a graphic.
(Playback program screen)
FIG. 11 is a screen example of a reproduction program screen 530 in which the reproduction program BML file 430 is graphicized.

  The reproduction program screen 530 is a screen obtained by graphicizing the BML file related to the program selected on the program navigation screen 520 in the reproduction program BML file 430, and includes a function mode information display unit 530 a indicating the operation state of the recording device 100. An index screen display unit 530b, an operation menu display unit 530c, and a menu display unit 530d including a return menu and a help menu are displayed.

  On this screen, any one of the menus of the operation menu display unit 530c and the menus of the menu display unit 530d is focused, and by pressing the right button and the left button of the remote control 30, By selecting either the operation menu display unit 530c or the menu display unit 530d as an operation target and pressing the upper button and the lower button of the remote control 30, the focus moves to the menu adjacent to the upper and lower sides of the operation target. . The background color of the focused menu changes to yellow.

The function mode information display unit 530a displays the current operation state of the recording device 100 by displaying “recording” or “reproducing” when the operation state of the recording device 100 is recording or reproducing. Show.
The index screen display unit 530b is an area for displaying a still image representing a program related to the screen.

The operation menu display unit 530c includes a reproduction operation menu and a stop operation menu.
The reproduction operation menu is a menu for accepting an operation for instructing reproduction of a program related to the screen. When the user presses the enter button on the remote controller 30 while the menu is focused, an AVC command for instructing playback of the program on the screen is sent from the display device 20 to the recording device 100.

The stop operation menu is a menu for accepting an operation for stopping the reproduction of the program related to the screen. When the user presses the enter button on the remote controller 30 while the menu is focused, an AVC command for instructing to stop the operation is sent from the display device 20 to the recording device 100.
Each menu of the return menu and the help menu of the menu display unit 530d is a link menu in which hyperlinks are set to the program navigation BML file 420 and the guidance BML file 440, respectively. By pressing, a BML file for GUI in which any focused menu is hyperlinked is displayed as a graphic.
(Guidance screen)
FIG. 12 is a screen example of the guidance screen 540 in which the guidance BML file 440 is graphicized.

The guidance screen 540 is a screen obtained by graphicizing the BML file describing the operation description of the caller GUI screen in the guidance BML file 440, and displays a text display unit 540a and a menu display unit 540b.
By pressing each of the upper and lower buttons on the remote controller 30 on the screen, the display content of the text display unit 540a is scrolled.

The text display unit 540a displays an operation description on the GUI screen of the caller of the screen as text.
The return menu of the menu display unit 540b is a link menu in which a hyperlink to the BML file describing the GUI screen that is the caller of the screen is set. When the user presses the enter button on the remote controller 30, the menu is displayed. The BML file that hyperlinks is displayed as a graphic.
(Reservation setting screen)
FIG. 13 is a screen example of a reservation setting screen 550 in which the reservation setting BML file 450 is graphicized.

The reservation setting screen 550 is a screen obtained by graphicizing the reservation setting BML file 450, and displays a program guide display unit 550a and a menu display unit 550b including a reservation menu, a return menu, and a help menu.
On this screen, any one of the programs displayed in the list on the program guide display unit 550a and one of the menus on the menu display unit 550b are focused, and By pressing the upper button and the lower button, the focus of the program displayed in the list on the program guide display unit 550a moves up and down, and by pressing the left button and the right button of the remote control 30, they are adjacent to the left and right. The focus moves to the menu. The background color of the focused program and the focused menu changes.

The program guide display unit 550a displays an electronic program guide created based on program information included in a digital broadcasting TS.
The reservation menu of the menu display unit 550b is a menu that accepts an operation for instructing recording reservation. When the menu is focused, the user presses the determination button on the remote controller 30 to focus on the program guide display unit 550a. The recording reservation of the program being set is set.

  Each menu of the return menu and the help menu of the menu display unit 550b is a link menu in which hyperlinks to the main menu BML file 410 and the guidance BML file 440 are set. By pressing, the BML file to which any of the focused menus is hyperlinked is displayed as a graphic.

  The recording apparatus 100 describes the above-described GUI screens using BML. However, the recording apparatus 100 may describe GUI screens other than those described above using BML. For example, the recording apparatus 100 displays detailed information for each program recorded on the recording medium 130 in addition to the above-described GUI screens, and manages the settings of each program such as deleting a program or changing a protection setting. The detailed setting screen to be described may be described using BML. In addition, it relates to the operation of the recording apparatus 100, such as change of media protection settings, selection of display language, and selection of a region for use corresponding to a different digital TV broadcasting system such as DVB (Digital Video Broadcasting). A function setting screen or the like for managing settings may be described using BML.

The recording device 100 and / or the display device 20 can be operated by the above operation using the GUI screen.
Here, operations of the recording device 100 and the display device 20 in response to an operation using the GUI screen will be described.
FIG. 14 is a diagram illustrating a configuration for controlling the operations of the recording device 100 and the display device 20 in accordance with an operation using a GUI screen.

The digital interface 20a and the digital tuner 20b of the display device 20 have the same configuration as the digital tuner 110 and the digital interface unit 120 of the recording device 100, respectively.
The decoder 20c includes a TS decoder that separates a plurality of information (video, audio, data carousel, etc.) multiplexed in the TS, and an MPEG-2 decoder that decodes video and audio encoded according to the MPEG-2 standard. Including.

The GUI display means 20d is a functional block that functions when the CPU of the display device 20 executes BML browser software, and images the BML file stored in the memory.
The accepting unit 20e receives a signal transmitted in response to a button pressed from the remote controller 30.

  The determination unit 20f and the command creation unit 20g are functional blocks realized by the CPU of the display device 20 executing software, respectively. The determination unit 20f receives the signals received by the reception unit 20e from the recording device 100 and Which operation of the display device 20 is instructed is determined according to the display state of the GUI screen, and the command creating unit 20g is determined by the determining unit 20f that the signal instructs the operation of the recording device 100. In this case, an AVC command corresponding to the operation is created.

Before the remote controller 30 is operated by the user, the display device 20 acquires the TS from either the digital interface 20a or the digital tuner 20b, and demultiplexes the TS by the decoder 20c. In addition to playing back video and audio, the multiplexed BML file is output and stored in the memory.
When the user presses a button on the remote controller 30, a signal is transmitted from the remote controller 30 to the accepting means 20e.

At this time, when the signal is a signal for instructing the operation of the display device 20, the determination unit 20f instructs the GUI display unit 20d to update the screen display.
For example, if the user presses the D button, and if the GUI screen is not displayed, the determination unit 20f instructs the GUI display unit 20d to start imaging the BML file, and the GUI screen Is displayed, the determination unit 20f instructs the GUI display unit 20d to end imaging of the BML file.

  In addition, when the user presses any of the upper button, the lower button, the left button, and the right button while the GUI screen is displayed, the determination unit 20f moves the focus to the GUI display unit 20d. When the user presses the enter button while the link menu on which a hyperlink to another GUI screen is set is focused, the determination unit 20f links to the GUI display unit 20d. The BML file is instructed to be imaged.

On the other hand, when the signal received by the accepting unit 20e is a signal for instructing the operation of the recording apparatus 100, the determining unit 20f instructs the command creating unit 20g to create an AVC command according to the operation.
For example, the BML file 410 for main menu multiplexed on the TS by the recording apparatus 100 is imaged, and the operation menu such as the recording operation menu and the reproduction operation menu is focused on the main menu screen by the user. When the determination button is pressed, the determination unit 20f instructs the command creation unit 20g to create an AVC command corresponding to the operation menu.

The command creation means 20g outputs the created AVC command to the recording device 100 via the digital interface 20a.
The AVC command output from the digital interface 20a of the display device 20 is input to the digital interface unit 120 of the recording device 100 via an IEEE 1394 cable.

  In the recording apparatus 100, the digital interface unit 120 notifies the user operation indicated by the AVC command to the CPU 140, and the received CPU 140 executes the recording control software 203 and the reproduction control software 204, thereby recording, reproducing, and the like. Realize the operation. At the same time, the CPU 140 updates the BML file (GUI data 400) according to the operating state of the recording device 100, multiplexes it with the TS, and outputs it to the display device 20.

The display device 20 acquires a new BML file by the digital interface 20a and the decoder 20c, and updates the BML file stored in the memory.
When the displayed BML file is updated, the GUI display unit 20d updates the screen display based on the new BML file.
As described above, by applying the present invention, the user can operate not only the display device 20 but also the recording device 100 by operating the GUI screen on the display device 20. Even when the recording device 100 and the display device 20 are installed in separate rooms, the user operates the GUI screen on the display device 20, utilizes the functions of the recording device 100, and confirms the operation with the updated GUI. Can do.

<Operation>
Next, the operation of the recording apparatus 100 configured as described above will be described.
FIG. 15 is a diagram showing an operation flow for controlling the OSD display on the GUI screen in the recording apparatus 100 according to the embodiment of the present invention.
First, the TS acquisition unit 220 of the GUI control software 200 acquires a display TS, and outputs the acquired TS to the BML generation unit 230 (S1).

The BML generation unit 230 performs a BML generation process for generating the GUI data 400 based on an instruction from the control unit 210 (S2).
The remultiplexing unit 240 performs a remultiplexing process of multiplexing the GUI data 400 generated by the BML generating unit 230 and the TS (S3), and the multiplexed TS is transferred to the display device 20 by the digital interface unit 120. Is output (S4).

  When the display TS is changed by a user operation such as recording, reproduction, or stop (S5: Yes), the TS acquisition unit 220 changes the TS to be acquired (S1). When there is no change in the display TS (S5: NO) and any GUI screen needs to be changed due to a change in the operation state of the recording device 100 (S6: Yes), BML generation is performed according to an instruction from the control unit 210 The unit 230 performs BML generation processing and updates the GUI data 400 (S2).

When it is not necessary to change the GUI screen (S6: No), the remultiplexing unit 240 repeats the remultiplexing process of multiplexing the generated GUI data 400 into the TS (S3).
Through the above operation, the GUI control software 200 can generate a TS in which GUI data 400 composed of a plurality of GUI BML files in which a GUI screen is described using BML is multiplexed.

Next, the operation flow of the BML generation process (S2 in FIG. 15) will be described in detail. FIG. 16 is a diagram showing the flow of the operation of the BML generation process in the BML generation unit 230.
First, the BML separation unit 234 obtains the PID value of the TS packet in which the PMT is stored from the PAT stored in the TS packet in which the PID included in the first TS 300 is “0x0000” (S11).

The BML separation unit 234 identifies the TS packet storing the PMT from the first TS 300 based on the acquired PID value, and acquires the PID value of the TS packet storing the data broadcast data carousel 330 from the PMT. (S12).
The BML separation unit 234 separates all TS packets having the PID value acquired in S12 from the first TS 300, acquires the data broadcast data carousel 330 stored in the separated TS packet group, and sets the TS packet group. The separated intermediate TS 301 is output to the remultiplexing unit 240 (S13). At this time, the remultiplex unit 240 is also notified of the frequency at which the TS packet storing the data broadcast data carousel 330 is included in the first TS 300.

  The BML separation unit 234 determines whether or not the data broadcast data carousel 330 has been updated based on the parameters set in the acquired modules constituting the data broadcast data carousel 330 (S14) and has been updated. In the case (S14: Yes), the data broadcasting BML file stored in the data broadcasting data carousel 330 is output to the link adjustment unit 235 (S15).

  On the other hand, when the rewriting unit 233 is instructed by the control unit 210 to generate a BML file constituting the GUI data 400 (S16: Yes), the rewriting unit 233 acquires a layout file corresponding to the target BML file from the layout holding unit 231. (S17) Furthermore, apparatus information is acquired from the apparatus information extraction part 232 (S18). The rewriting unit 233 generates a target BML file from the layout file acquired by the above operation and the device information, and outputs the generated BML file to the link adjustment unit 235 (S19).

When the rewriting unit 233 is further instructed to generate another BML file constituting the GUI data 400 from the control unit 210 (S16: Yes), the rewriting unit 233 repeats the steps from S17 to S19, and the instructed BML file Is generated.
The link adjusting unit 235 adjusts the link between the data broadcasting BML file and the GUI data 400 when any of the BML files constituting the data broadcasting BML file and the GUI data 400 is updated (S20: Yes). Then, the BML file for data broadcasting and the GUI data 400 for which the link adjustment has been completed are output to the remultiplexing unit 240 (S21).

With the above operation, the BML generating unit 230 completes the generation of the GUI data 400 including a plurality of GUI BML files in which the GUI screen is described using the BML.
Next, the operation flow of the remultiplexing process (S3 in FIG. 15) will be described in detail. FIG. 17 is a diagram illustrating an operation flow of the remultiplexing process in the remultiplexing unit 240.
First, when the carousel converting unit 241 acquires the GUI data 400 and the data broadcasting BML file from the link adjustment unit 235 (S31: Yes), the acquired GUI data 400 and the data broadcasting BML file are converted into ISO / IEC13818. The modules specified in -6 are collected (S32).

The carousel converting unit 241 further generates DII which is module management information, arranges the DDB obtained by dividing the module into a predetermined size (data portion 4066 bytes), and DII, and generates a GUI data carousel 331. The generated GUI data carousel 331 is output to the TS packetization unit 242 (S33).
The TS packetizing unit 242 converts the acquired GUI data carousel 331 into a TS packet and stores it in the RAM 160 (S34).

  The packet insertion unit 243 acquires the TS packet storing the GUI data carousel 331 from the RAM 160, inserts the acquired TS packet into the intermediate TS 301 acquired from the BML separation unit 234, and generates the second TS 302 (S35). Note that the packet insertion unit 243 uses the GUI for the GUI at the same frequency as the TS packet that is divided from the data broadcast data carousel 330 and stored in the first TS 300 and is notified from the BML separation unit 234. The TS packet stored by dividing the data carousel 331 is inserted into the intermediate TS 301.

With the above operation, the remultiplexing process in the remultiplexing unit 240 is completed.
(Embodiment 2)
<Overview>
In the first embodiment, the GUI for generating the second TS 302 in which the newly generated GUI data carousel 331 is multiplexed with the same bandwidth as the bandwidth in which the data broadcast data carousel 330 is multiplexed in the first TS 300 is used. The control software 200 has been described. In the second embodiment of the present invention, the GUI control software 201 that multiplexes the GUI data carousel 331 to the TS with a wider bandwidth using the null packet included in the TS will be described.

<Configuration>
FIG. 18 is a block diagram showing a functional configuration of the GUI control software 201.
The GUI control software 201 shown in FIG. 18 is obtained by changing the BML separation unit 234 of the GUI control software 200 described in the first embodiment into a BML acquisition unit 236 and changing the packet insertion unit 243 into a packet replacement unit 244. . Note that the same components as those in the GUI control software 200 are denoted by the same reference numerals, and description thereof is omitted.

  The BML acquisition unit 236 acquires TS packets (BML1 to BML3) storing the data broadcast data carousel 330 from the first TS 303 illustrated in FIG. 19A acquired from the TS acquisition unit 220, and data is acquired from the acquired TS packets. When the data broadcasting BML file describing the broadcast content is acquired and the moduleId and moduleVersion set in the module in the data broadcasting data carousel 330 are changed, the acquired data broadcasting BML file is linked to the link adjustment unit 235. Output to.

Further, the BML acquisition unit 236 changes the PID values of all TS packets storing the data broadcast data carousel 330 included in the first TS 303 to “0x1FFF” indicating a null packet, whereby the first TS 303 Is converted to an intermediate TS 304 shown in FIG. 19 b, and the intermediate TS 304 is output to the remultiplexing unit 240.
FIG. 19 is a schematic diagram showing a TS including a null packet. In the first TS 303 shown in FIG. 19a, since the information to be transmitted (video, audio, and data broadcast) is less than a predetermined amount of information, a null packet is added to the TS packets constituting the TS to adjust the information transmission rate. ing. The null packet is a TS packet that does not transmit information, and the value of PID is set to “0x1FFF”. Adjustment of the transmission rate of TS by such a null packet is made by a broadcasting station that broadcasts the first TS303.

  The packet replacement unit 244 acquires TS packets (BML11 to 15) obtained by dividing and storing the GUI data carousel 331 from the RAM 160, the acquired TS packet, and the null packet included in the intermediate TS 304 acquired from the BML acquisition unit 236. Is generated to generate the second TS 305 shown in FIG. The generated second TS 305 is a TS that transmits the video PES 310, the audio PES 320, the GUI data carousel 331, and the program specifying information.

With the above configuration, the GUI control software 201 does not exceed the bandwidth capable of transmitting information as a whole TS, and has a wider bandwidth than the bandwidth in which the data broadcast data carousel 330 is multiplexed in the first TS 303. The second TS 305 in which the data carousel 331 for use is multiplexed can be generated.
<Operation>
Next, the flow of BML generation processing and remultiplexing processing in the GUI control software 201 described above will be described.

FIG. 20 is a diagram showing a flow of the operation of the BML generation process in the BML generation unit 230.
Hereinafter, the description of the operation similar to the operation flow of the BML generation process in the GUI control software 200 illustrated in FIG. 16 is omitted, and the rewriting unit 233 determines whether or not there is a BML generation instruction from the control unit 210. The operation up to the steps to be performed (S16 in FIG. 16 and S47 in FIG. 20) will be described.

  First, the BML acquisition unit 236 acquires the PID value of the TS packet in which the PMT is stored from the PAT stored in the TS packet in which the PID included in the first TS 303 is “0x0000” (S41). The BML acquisition unit 236 specifies the TS packet storing the PMT from the first TS 303 based on the acquired PID value, and acquires the PID value of the TS packet storing the data broadcast data carousel 330 from the PMT. (S42). The BML acquisition unit 236 identifies all TS packets having the PID value acquired in S42 from the first TS 303, and divides the data carousel 330 for data broadcasting from information stored by dividing into payloads of the specified TS packet group. Restore (S43). The BML acquisition unit 236 changes the PIDs of all TS packets specified in S43 to “0x1FFF”, and outputs the changed intermediate TS 304 to the remultiplexing unit 240 (S44).

The BML acquisition unit 236 determines whether or not the data broadcast BML file in the module has been updated from the parameters set in the modules constituting the data broadcast data carousel 330 acquired in S43 (S45). If so (S45: Yes), the data broadcasting BML file is output to the link adjustment unit 235 (S46).
Thereafter, the same operation flow as that after S16 in FIG. 16 is executed, whereby the BML generation process is completed.

Next, the operation flow of the remultiplexing process will be described in detail.
FIG. 21 is a diagram illustrating a flow of operation of remultiplexing processing in the remultiplexing unit 240.
Hereinafter, the description of the operation similar to the flow of the remultiplexing process in the GUI control software 200 shown in FIG. 17 will be omitted, and the TS data packet carousel 331 is TS packetized in the TS packetizer 242 (FIG. 17). The operation after S34 of S17 and S64) of FIG. 21 will be described.

  When the GUI data 400 and the data broadcasting BML file have not been updated from the link adjustment unit 235 in the carousel conversion unit 241 (S61: No), the TS data packetization unit 242 converts the GUI data carousel 331 into a TS packet. Later (S64), the packet replacement unit 244 acquires the TS packet storing the GUI data carousel 331 from the RAM 160, and replaces the acquired TS packet with the null packet included in the intermediate TS 304 acquired from the BML acquisition unit 236. As a result, the second TS 305 is generated (S65).

With the above operation, the remultiplexing process is completed.
(Embodiment 3)
<Overview>
In the first and second embodiments, the GUI control software 200 that outputs a TS in which the BML file for data broadcasting and the GUI data 400 are multiplexed has been described. In the third embodiment, the TS to be output is output. The GUI control software 202 that does not include data broadcasting will be described.

<Configuration>
FIG. 22 is a block diagram showing a functional configuration of the GUI control software 202. The GUI control software 202 shown in FIG. 22 changes the rewrite unit 233 of the GUI control software 200 described in the first embodiment to a rewrite unit 237 and the BML separation unit 234 to the BML separation unit 238, and the link adjustment unit 235. It is the structure which deleted. Note that the same components as those in the GUI control software 200 are denoted by the same reference numerals, and description thereof is omitted.

The rewriting unit 237 has the same function as the rewriting unit 233 described in the first embodiment, and outputs the generated BML file to the carousel converting unit 241. When the still image file related to the generated BML file is included in the device information, the still image file is output to the carousel unit 241 together with the generated BML file.
The BML separation unit 238 separates the TS packet storing the data carousel 330 for data broadcasting from the first TS 306 acquired from the TS acquisition unit 220. The TS packet storing the separated data broadcast data carousel 330 is discarded, and the video PES 310, the audio PES 320, and the intermediate TS 307 transmitting the program specifying information are output to the remultiplexing unit 240. At the same time, the remultiplex unit 240 is notified of the frequency with which the TS packet storing the data broadcast data carousel 330 was included in the first TS 306.

With the above configuration, the GUI control software 202 can generate the second TS 308 in which the data broadcast is not multiplexed. The GUI data carousel 332 multiplexed in the second TS 308 has a shorter carousel cycle as compared with the GUI data carousel 331 in the first and second embodiments, because the data broadcasting BML file is not included, and the recording apparatus 100. The response of updating the GUI screen accompanying the transition of the operation state can be improved.
(Embodiment 4)
<Overview>
In the first to third embodiments, a digital television compliant with the digital broadcasting standard established by ARIB is used as a display device, and BML used for description of data broadcasting content of the standard is used as a language used for description of status information. Although the present invention has been described by using the present invention, the present invention is not limited to the digital broadcast standard formulated by ARIB, but can be applied to other digital broadcast standards.

  In the fourth embodiment, an application execution engine (for example, Java (registration)) that executes an application described in a device-independent bytecode language, such as a digital television compliant with a digital broadcasting standard established by DVB in Europe. (Registered trademark) VM) and a display device that executes a procedural application (for example, a Java (registered trademark) program) acquired from a data broadcast, and a user interface screen layout and display contents in a data structure usable by the application and the application The recording apparatus 101 that multiplexes and transmits the state information describing the above to the transport stream will be described.

<Configuration>
1. System Configuration FIG. 23 is a diagram showing a configuration of a recording / playback system 2 using the recording apparatus 101 according to the fourth embodiment.
The recording / playback system 2 is a recording / playback system that records and plays back a digital broadcast, and is obtained by changing the display device 20 of the recording / playback system 1 described in the first embodiment to a display device 21. The same components as those of the recording / playback system 1 are denoted by the same reference numerals, and description thereof is omitted.

  Data broadcasting is multiplexed in digital broadcasting of MHP (Multimedia Home Platform) standard received by the antenna 10. The data broadcasting content of the MHP standard is composed of an application (hereinafter simply referred to as an application) described using a device-independent bytecode language and a document used in the application. These application and document are stored in an object carousel. Is transmitted.

The display device 21 is provided with an MPEG-2 decoder inside so as to be able to view a television broadcast, and can also be provided with an application execution engine for executing an application to use an MHP standard data broadcast. Similarly to the display device 20, the display device 21 further has a function of transmitting an AVC command for controlling devices connected by an IEEE1394 cable to the recording device 101.
2. Recording Device The recording device 101 has the same hardware configuration as the recording device 100. The ROM 150 records the GUI control software 205 instead of the GUI control software 200 described in the first embodiment.
3. Software Configuration FIG. 24 is a block diagram showing a functional configuration of the GUI control software 205 that controls the OSD display of the GUI screen.

The GUI control software 205 has a configuration in which the BML generation unit 230 of the GUI control software 200 described in the first embodiment is changed to a BML generation unit 250, and the remultiplexing unit 240 is changed to a remultiplexing unit 260. The same components as those in the GUI control software 200 are denoted by the same reference numerals, and description thereof is omitted.
The BML generation unit 250 has a configuration in which the BML separation unit 234 of the BML generation unit 230 is changed to a separation unit 251.

  The separation unit 251 separates the data broadcast object carousel from the first TS 341 acquired from the TS acquisition unit 220 by the same process as the BML separation unit 234 separates the data broadcast data carousel 330 from the first TS 300. In addition, the separation unit 251 outputs the intermediate TS 342 obtained by separating the data broadcast object carousel from the first TS 341 to the remultiplexing unit 260, acquires data broadcast content from the data broadcast object carousel, and sends the data broadcast content to the link adjustment unit 235. Output.

The remultiplexing unit 260 has a configuration in which the carouseling unit 241 of the remultiplexing unit 240 is changed to a carouseling unit 261 and an application storage unit 262 is added.
The carousel converting unit 241 generates an object carousel that transmits the GUI data 400 and the data broadcasting content acquired from the BML generating unit 250 every time the GUI data 400 and the data broadcasting content are output from the BML generating unit 230. However, when the recording apparatus 101 is activated, the carousel converting unit 241 acquires the BML browser application from the application storage unit 262, and in addition to the GUI data 400 and data broadcasting content acquired from the BML generating unit 250, the BML browser application Create an object carousel to be transmitted.

The carousel converting unit 241 outputs the generated object carousel to the TS packetizing unit 242 as a GUI object carousel 344.
The application storage unit 262 holds a BML browser application described using a device-independent bytecode language.
With the above configuration, the recording apparatus 101 can send a BML browser application to the display apparatus 21 at the time of activation.

The BML browser application is executed by an application execution engine included in the display device 21, and the user interface screen description document constituting the GUI data 400 is imaged by the BML browser application, thereby realizing OSD display.
(Other variations)
Although the present invention has been described based on the above first to fourth embodiments, the present invention is of course not limited to the above embodiments. The following cases are also included in the present invention.

(1) The present invention may be the method described above. Further, the present invention may be a computer program that realizes these methods by a computer, or may be a digital signal composed of the computer program.
The present invention also provides a computer-readable recording medium such as a flexible disk, hard disk, CD-ROM, MO, DVD, DVD-ROM, DVD-RAM, BD (Blu-ray Disc). ), Recorded in a semiconductor memory or the like. Further, the present invention may be the computer program or the digital signal recorded on these recording media.

In the present invention, the computer program or the digital signal may be transmitted via an electric communication line, a wireless or wired communication line, a network represented by the Internet, or the like.
The present invention may also be a computer system including a microprocessor and a memory, wherein the memory stores the computer program, and the microprocessor operates according to the computer program.

In addition, the program or the digital signal is recorded on the recording medium and transferred, or the program or the digital signal is transferred via the network or the like, and is executed by another independent computer system. It is good.
(2) In Embodiment 1 above, the recording apparatus according to the present invention receives a digital broadcast TS from an antenna. However, the present invention may acquire the TS by other methods. For example, the recording device may include an external input terminal and acquire a TS output from another playback device, or may acquire a TS from a cable television or the like. Further, the recording apparatus according to the present invention may attach a recording medium on which TS is recorded, and read the recorded TS from the recording medium.
Embodiment 1 above
(3) In Embodiments 1 to 4 above, the recording apparatus having a configuration for transmitting TS via the digital interface unit has been described. In addition to the above-described configuration, the recording apparatus according to the present invention converts video multiplexed on a TS into an analog video signal such as an NTSC signal or a PAL signal, and transmits the analog video signal via an analog interface. The video output may be switched between analog and digital in accordance with the type of display device to be connected. The recording apparatus as described above has a configuration for realizing OSD display, in addition to a group of components for digital output in which a GUI screen is described using BML and multiplexed on TS, a video signal for conventional OSD display is displayed. A component group for analog output that is generated and superimposed on an analog video signal, and a configuration that realizes OSD display according to switching of video output, a component group for digital output, and a component for analog output It may be switched to a group.

(4) In the fourth embodiment, the configuration in which the BML browser and the BML file (status information) are output to the display device has been described. However, the procedural application executed by the application execution engine is not limited to the BML browser. The state information is not limited to the BML file.
The procedural application output from the recording device can be executed by the application execution engine of the display device, information describing the screen layout with a predetermined data structure can be imaged, and the status information output from the recording device is the procedure. If the user interface screen is described with a data structure that can be interpreted and imaged by the type application, the OSD display that is the subject of the present invention can be realized.

Further, the recording apparatus does not necessarily output both the procedural application and the status information.
When the display device provided with the application execution engine already holds a procedural application for imaging information described in a predetermined data structure, the recording device of the present invention has a user interface screen layout and device. OSD display can be realized by describing at least one of the information in a data structure that can be interpreted and imaged by a procedural application and outputting the described status information to a display device.

  (5) In Embodiments 1 to 4 described above, stream data used for recording a program on a recording medium and outputting to a display device has been described as MPEG-2 TS format stream data. The feature does not depend on the specifications of the MPEG-2 TS system, and the stream data used for recording and output is stream data of any system as long as it can transmit video data and status information. There may be.

For example, it may be MPEG-2 PS stream data or stream data other than the MPEG standard.
(6) The above embodiment and the above modifications may be combined.

  INDUSTRIAL APPLICABILITY The present invention can be used for a recording device that records a TS received from a digital broadcast on a recording medium and outputs the TS to a digitally connected display device.

It is a schematic diagram of TS which transmits one program. It is a figure which shows the structure of the video recording / reproducing system 1 using the video recording apparatus 100 concerning this invention. It is a block diagram which shows the function structure of the GUI control software 200 which controls the OSD display of a GUI screen. It is a figure which shows the relationship between the state transition of an operation state, and the main BML files updated with a state transition. FIG. 6 is a schematic diagram showing a carousel cycle between a data broadcast data carousel 330 and a GUI data carousel 331; 3 is a diagram illustrating a configuration of GUI data 400 generated by the recording apparatus 100. FIG. It is an example of description of the BML file 430 for reproduction | regeneration programs. It is a screen example of a main menu screen 510 in which a main menu BML file 410 is graphicized. It is a figure which shows the detail of the video recording / playback mode information display part 510d. It is a screen example of the program navigation screen 520 in which the program navigation BML file 420 is graphicized. It is a screen example of the reproduction program screen 530 in which the reproduction program BML file 430 is graphicized. It is a screen example of the guidance screen 540 in which the guidance BML file 440 is graphicized. It is a screen example of a reservation setting screen 550 in which a reservation setting BML file 450 is graphicized. It is a figure which shows typically transmission of the AVC command from the display apparatus 20 to the video recording apparatus 100 by operation using a GUI screen. It is a figure which shows the flow of the operation | movement which controls the OSD display of a GUI screen in the video recording apparatus 100 which concerns on embodiment of this invention. It is a figure which shows the flow of operation | movement of the BML production | generation process in the BML production | generation part 230. FIG. FIG. 10 is a diagram showing a flow of remultiplexing processing in the remultiplexing unit 240. 3 is a block diagram showing a functional configuration of GUI control software 201. FIG. It is a schematic diagram which shows TS containing a null packet. It is a figure which shows the flow of operation | movement of the BML production | generation process in the BML production | generation part 230. FIG. FIG. 10 is a diagram showing a flow of remultiplexing processing in the remultiplexing unit 240. 3 is a block diagram showing a functional configuration of GUI control software 202. FIG. It is a figure which shows the structure of the video recording / reproducing system 2 using the video recording apparatus 101 which concerns on Embodiment 4. FIG. It is a block diagram which shows the function structure of the GUI control software 205 which controls the OSD display of a GUI screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Recording / reproducing system 10 Antenna 20, 21 Display apparatus 20a Digital interface 20b Digital tuner 20c Decoder 20d GUI display means 20e Acceptance means 20f Judgment means 20g Command preparation means 30 Remote control 100, 101 Recording apparatus 110 Digital tuner 120 Digital interface part 130 Recording medium 140 CPU
150 ROM
160 RAM
200, 201, 202, 205
GUI control software 203 Recording control software 204 Playback control software 210 Control unit 220 TS acquisition unit 230, 250 BML generation unit 231 Layout holding unit 232 Device information extraction unit 233, 237 Rewrite unit 234, 238 BML separation unit 235 Link adjustment unit 236 BML acquisition unit 240, 260 Remultiplexing unit 241, 261 Carouselization unit 242 TS packetization unit 243 Packet insertion unit 244 Packet replacement unit 251 Separation unit 262 Application holding unit 300, 303, 306, 341
1st TS
301, 304, 307, 342
Intermediate TS
302, 305, 308, 343
2nd TS
310 Video PES
320 Voice PES
330 Data Broadcast Data Carousel 331, 332 GUI Data Carousel 344 GUI Object Carousel 400 GUI Data 410 Main Menu BML File 420 Program Navigation BML File 430 Playback Program BML File 440 Guidance BML File 450 Reservation Setting BML File 510 main menu screen 510a function mode information display section 510b index screen display section 510c operation menu display section 510d recording / playback mode information display section 510e menu display section 520 program navigation screen 520a content information list display section 520b menu display section 530 playback program screen 530a Function mode information display section 530b Index screen display section 530c Operation menu display section 5 0d menu display section 540 guidance screen 540a text display section 540b menu display unit 550 reservation setting screen 550a program guide display unit 550b menu display unit

Claims (33)

A recording medium on which a transport stream is recorded,
In the transport stream, information indicating a state of a device according to a user operation is multiplexed with video data. An acquisition step of acquiring a transport stream including video data and data broadcast content;
A reception step for accepting a user operation;
A read / write step of executing a process of writing a transport stream to a recording medium and a process of reading the transport stream from the recording medium according to the user operation;
A generation step for generating state information indicating a state of the device according to the user operation in the same description format as the data broadcast content;
An OSD display control method including an output step of outputting generated state information to a display device via a digital interface. The display device displays a graphic user interface;
The OSD display control method according to claim 2, wherein the status information includes a control command for controlling a graphic user interface that accepts at least the user operation. 4. The OSD display control method according to claim 3, wherein the description method of the data broadcast content is a description in one of a markup language and a device-independent bytecode language. 5. The OSD display control according to claim 4, wherein the state information generated in the generation step is a user interface screen description document described in the description method, and includes a hyperlink to data broadcasting content. Method. The OSD display control method further includes a link providing step of providing a hyperlink to the data broadcast content,
5. The OSD display control method according to claim 4, wherein the state information generated in the generation step is a user interface screen description document described by the description method, and is a link destination of the hyperlink. 5. The OSD according to claim 4, wherein the output of the state information in the output step is described in a device-independent bytecode language and is accompanied by an output to a display device of an application for imaging the state information. Display control method. The generation step includes a layout acquisition substep for acquiring layout information describing a layout of the user interface screen in a markup language;
A device information extraction substep for acquiring device information indicating the state of the device according to the user operation,
The OSD display control method according to claim 4, wherein the generation of the state information in the generation step is performed by rewriting layout information in accordance with a state indicated by the device information. The device information includes the function mode information indicating the operation state of the device, the function operation information describing the operation method of the user interface screen, and the state of the recording medium including the remaining recording capacity of the recording medium. Media information indicating, content information indicating the state of the transport stream including the data amount of the transport stream recorded on the recording medium, reproduction mode information indicating a temporal position during reading at the time of reading, and writing at the time of writing 9. The OSD display control method according to claim 8, wherein the OSD display control method is any one or a combination thereof with recording mode information indicating a temporal position during writing. 4. The OSD display control method according to claim 3, wherein the reception of the user operation in the reception step is performed by receiving operation information indicating the user operation from the display device via the digital interface. The OSD display control method according to claim 2, wherein the output step includes outputting the state information in the data broadcast content to a display device. The data broadcast content is multiplexed into a transport stream by a data carousel method,
12. The OSD display control method according to claim 11, wherein the incorporation in the output step is performed by adding status information to a data carousel for transmitting data broadcast content. The addition to the carousel in the output step is to separate the transport stream into a data carousel and an intermediate transport stream, and generate a new data carousel from the data broadcast content and status information contained in the separated data carousel. Is to do
13. The OSD display control method according to claim 12, wherein the incorporation by the output step includes multiplexing of the new data carousel and the intermediate transport stream. The multiplexing of the new data carousel and the intermediate transport stream in the output step is performed with the same bandwidth as the bandwidth of the transport stream obtained in the acquisition step. OSD display control method. The incorporation by the output step is to remove the data broadcast content from the data broadcast content and the intermediate transport stream constituting the transport stream, and to multiplex the state information with the intermediate transport stream. The OSD display control method according to claim 11. The transport stream includes a plurality of null packets having no information to be transmitted,
The OSD display control method according to claim 11, wherein the incorporation by the output step is replacing the null packet with the state information. The OSD display control method further includes:
12. The OSD display control method according to claim 11, further comprising a writing step of recording the transport stream in which the state information is incorporated into the recording medium. A program for causing a computer to execute the following steps:
An acquisition step of acquiring a transport stream including video data and data broadcast content;
A reception step for accepting a user operation;
A read / write step of executing a process of writing a transport stream to a recording medium and a process of reading the transport stream from the recording medium according to the user operation;
A generation step of generating status information indicating a status of the computer in response to the user operation in the same description format as the data broadcast content;
An output step of outputting the generated state information to a display device via a digital interface. The display device displays a graphic user interface;
The program according to claim 18, wherein the status information includes at least a control command for controlling a graphic user interface that receives the user operation. The program according to claim 19, wherein the description method of the data broadcasting content is a description in any one of a markup language and a device-independent bytecode language. The program according to claim 20, wherein the state information generated in the generating step is a user interface screen description document described in the description method, and includes a hyperlink to data broadcasting content. The program further includes a link granting step for giving a hyperlink to the data broadcast content,
21. The program according to claim 20, wherein the state information generated in the generation step is a user interface screen description document described in the description method and is a link destination of the hyperlink. 21. The program according to claim 20, wherein the output of the status information in the output step is described in a device-independent bytecode language, and is accompanied by an output to a display device of an application for imaging the status information. . The generation step includes a layout acquisition substep for acquiring layout information describing a layout of the user interface screen in a markup language;
A device information extraction substep for acquiring device information indicating the state of the device according to the user operation,
21. The program according to claim 20, wherein the generation of the state information in the generation step is performed by rewriting layout information according to a state indicated by the device information. The device information includes function mode information indicating an operation state of the computer, function operation information that describes an operation method of the user interface screen, and a state of the recording medium including a remaining recording capacity of the recording medium , Media information indicating the content of the transport stream including the data amount of the transport stream recorded on the recording medium, playback mode information indicating the temporal position during reading at the time of reading, and writing 25. The program according to claim 24, which is one or a combination of recording mode information indicating a temporal position during writing. 20. The program according to claim 19, wherein the reception of the user operation in the reception step is performed by receiving operation information indicating the user operation from the display device via the digital interface. The program according to claim 18, wherein in the output step, the state information is incorporated into the data broadcast content and output to a display device. The data broadcast content is multiplexed into a transport stream by a data carousel method,
28. The program according to claim 27, wherein the incorporation in the output step is performed by adding status information to a data carousel for transmitting data broadcast content. The addition to the carousel in the output step is to separate the transport stream into a data carousel and an intermediate transport stream, and generate a new data carousel from the data broadcast content and status information contained in the separated data carousel. Is to do
The program according to claim 28, wherein the incorporation by the output step includes multiplexing of the new data carousel and the intermediate transport stream. 30. The multiplexing of the new data carousel and the intermediate transport stream in the output step is performed with the same bandwidth as the bandwidth of the transport stream obtained in the obtaining step. program. The incorporation by the output step is to remove the data broadcast content from the data broadcast content and the intermediate transport stream constituting the transport stream, and to multiplex the state information with the intermediate transport stream. The program according to claim 27. The transport stream includes a plurality of null packets having no information to be transmitted,
28. The program according to claim 27, wherein the incorporation by the output step is replacement of the null packet with the state information. The program further includes:
28. The program according to claim 27, further comprising a writing step of recording the transport stream in which the state information is incorporated into the recording medium.

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