JP2004242291A - Video recording apparatus, osd display control method, program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video recording apparatus for OSD display of a user interface picture indicating a status of the apparatus corresponding to a user operation on a digital connected display device. <P>SOLUTION: The video recording apparatus is provided with a TS acquisition part 220 for acquiring a transport stream containing video data and data broadcast contents, a BML generating part 230 for generating status information describing the user interface picture in the same description form as the data broadcast contents, and a re-multiplexing part 240 for multiplexing the status information on the transport stream. <P>COPYRIGHT: (C)2004,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 on an OSD (On Screen Display).

Some recording devices indicate the operation state of the own device by using a technique called OSD display for displaying a GUI screen unique to the recording device on a connected display device.
Japanese Patent Application Laid-Open No. Hei 10-191463 discloses a technique in which a plurality of devices are connected via a network such as a LAN, and one device displays a screen for controlling the other device.
A conventional recording device for recording an analog broadcast realizes OSD display by superimposing GUI screen data of an analog signal on video data which is an analog signal of an NTSC (National Television System Committee) system or the like and transmitting the superposed data to a display device. are doing. However, in digital broadcasting, a coded digital signal is used as video data, and a recording device cannot simply superimpose GUI screen data on video data which is a coded digital signal.

In order to superimpose an image specific to a recording device on video data which is a coded digital signal and display it on an OSD, the coded video data is decoded, the digital signal is converted into an analog signal, and then the analog signal is converted. It is necessary to superimpose an image specific to the recording device on the video data.
JP-A-10-191463 JP 2001-326870 A

  However, display devices such as digital televisions that can decode encoded video data are becoming widespread. By incorporating a decoder on the display device side, the recording device does not have a built-in decoder, keeps the price down, records (stores) video data received by digital broadcasting as digital data, and conforms to the IEEE 1394 standard, which is a digital connection. There is a tendency to specialize in the role of a streamer that sends the data directly to the display device via a cable or the like.

In a recording device without 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 device cannot be used.
Further, in digital broadcasting, a data broadcast is broadcast together with video data, or a plurality of video data are multiplexed and broadcast. These video data have a link between video and data broadcasting, and a data structure for realizing a multi-view program that is a service unique to digital broadcasting. When video data is converted into an analog signal, The structure will be missing. If an analog signal is sent to a display device with a missing data structure, there is a problem that a multi-view program or the like cannot be realized on the display device side.

  The present invention has been made in view of the above problems, and provides a recording device, an OSD display control method, a program, and a recording medium that can cause a display device to display an OSD on a display device without decoding video data of digital broadcasting. The purpose is to:

  In order to achieve the above object, a recording apparatus according to the present invention includes an acquiring unit for acquiring a transport stream including video data and data broadcast content, a receiving unit for receiving a user operation, and writing the transport stream on a recording medium. A read / write unit for executing a process and a process of reading a transport stream from a recording medium in accordance with the user operation, and generating state information indicating a state of the apparatus corresponding to the user operation in the same description format as the data broadcast content. It is characterized by comprising a generation unit and an output unit that outputs the generated state information to a display device via a digital interface.

Further, the recording medium according to the present invention is a recording medium on which a transport stream is recorded, wherein the transport stream has information indicating a state of an apparatus according to a user operation multiplexed with video data. It is characterized by the following.
In addition, the OSD display control method according to the present invention includes: an obtaining step of obtaining a transport stream including video data and data broadcast content; a receiving step of receiving a user operation; a process of writing the transport stream to a recording medium; A read / write step of executing a process of reading a transport stream from a recording medium in accordance with the user operation, and a generating step of generating state information indicating a state of the apparatus according to the user operation in the same description format as the data broadcast content; Outputting the generated status information to a display device via a digital interface.

  Further, the program according to the present invention is 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 of receiving a user operation; A step of writing a port stream to a recording medium, and a step of reading and writing the transport stream from the recording medium in accordance with the user operation; and The method includes a generation step of generating state information indicating a state, and an output step of outputting the generated state information to a display device via a digital interface.

With the above configuration, the recording device according to the present invention can transmit, to the display device, state information in the same description format as the data broadcast content that can be imaged on the display device.
Therefore, on the display device, a screen showing a response to the user operation can be displayed by OSD using the function of imaging the data broadcast content. Furthermore, since there is no need to decode or convert digital broadcast video data into an analog signal for OSD display, a multi-view program or data broadcast, which is a service unique to digital broadcast, can be used. Can be OSD-displayed on the display device in accordance with a user operation even when the device does not have a decoder.

The display device may display a graphic user interface, and the status information may include at least a control command for controlling a graphic user interface that receives the user operation.
Thereby, the recording device can control the reception of the user operation via the graphic user interface displayed by the display device.

The description method of the data broadcast content may be a description in any of a markup language and a device-independent bytecode language.
Thus, the user interface screen indicating 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.

Therefore, the user interface screen can be imaged by the browser provided in the display device.
Further, the status information generated by the generation unit may be a user interface screen description document described in the description method, and may include a hyperlink to a data broadcast content.

As a result, the screen transition from the user interface screen indicating the state of the recording apparatus according to the user operation to the data broadcast content can be performed by the hyperlink.
Therefore, the user interface screen and the data broadcast content can be selectively displayed without changing the screen layout of the existing data broadcast content.

Further, the recording device further includes link providing means for providing a hyperlink to the data broadcast content, and the state information generated by the generating means is a user interface screen description document described in the description method. , May be the link destination of the hyperlink.
As a result, the screen can be changed from the data broadcast content to the user interface screen indicating the state of the recording apparatus 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 operating the display device.
Further, the output means may be described in a device-independent bytecode language together with the state information, and may output an application for imaging the state information to a display device.

Thus, the status 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 status information.
Therefore, when the application runs in the application execution engine of the display device, a user interface screen indicating the state of the device according to the user operation can be imaged.

  In addition, the generation unit includes a holding unit that holds layout information describing a layout of the user interface screen in a markup language, and a device information extraction unit that obtains device information indicating a state of the own device according to the user operation The generation of the state information by the generation unit may be performed by acquiring layout information from the holding unit, and rewriting the layout information according to a state indicated by the device information.

Thus, the recording apparatus can easily generate the state information using the layout information as the template.
Therefore, regardless of the content transmitted by the transport stream acquired by the acquisition unit, the user interface screen indicating the status of the device according to the user operation can be displayed by OSD with the layout unique to the device.

  Further, the device information includes function mode information indicating an operation state of the recording device, function operation information describing a method of operating the user interface screen, and the recording including a remaining storage capacity of the recording medium. Media information indicating the state of the medium, content information indicating the state of the transport stream including the data amount of the transport stream recorded on the recording medium, and reproduction mode information indicating the temporal position being read at the time of reading And recording mode information indicating a temporal position during writing at the time of writing, or a combination thereof.

Thus, the user interface screen indicating the state of the apparatus according to the user operation can accurately indicate the state of the recording apparatus by including various information.
Further, the receiving means may receive operation information indicating a user operation from a display device via the digital interface.
Thus, the user can operate the recording device from the display device being viewed and check the status information generated by 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.
The output unit may incorporate the status information into the data broadcast content and output the data broadcast content to a display device.
As a result, the status information can be incorporated into the data broadcast content including the transport stream and transmitted to the display device.

  Therefore, since it is not necessary to decode digital broadcast video data included in the transport stream for OSD display or to 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 device does not include a decoder for decoding video data, an image unique to the device can be OSD-displayed on the display device.

Also, the data broadcast content may be multiplexed into a transport stream in a data carousel system, and the incorporation by the output means may include adding state information to a data carousel transmitting the data broadcast content.
Thereby, the state information can be output to the display device in the data carousel method.
Therefore, after the status information transmitted by the data carousel method is accumulated in the display device, the user can image a screen indicating the status of the device according to the user operation at an arbitrary timing.

  Further, the addition to the carousel by the output means means that the transport stream is separated into a data carousel and an intermediate transport stream, and a new data carousel is obtained from the data broadcast content and the state information included in the separated data carousel. And the incorporation by the output means may include a process of multiplexing the new data carousel and the intermediate transport stream.

  Thus, the state information and the data broadcast content can be transmitted together using the data carousel used for transmitting the data broadcast content. The packet group transmitting the video data and the packet group transmitting the data carousel can be multiplexed by arbitrarily allocating the transmission speed within the bandwidth that the transport stream can transmit. There is no need to change the transmission speed at which video data is transmitted in order to output video data.

Therefore, it is possible to cause the user interface screen indicating the state of the apparatus according to the user operation to be displayed 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 by the output unit may be performed with the same bandwidth as the bandwidth of the transport stream at the stage obtained by the obtaining unit.

Accordingly, the state information and the data broadcast content can be transmitted together using the bandwidth in which the transport stream transmits the data broadcast content.
Therefore, the state information can be multiplexed into the transport stream without exceeding the bandwidth in which the information can be transmitted as the entire transport stream.
Also, the incorporation by the output means may include removing the data broadcast content from the data broadcast content and the intermediate transport stream constituting the transport stream, and multiplexing the state information with the intermediate transport stream.

  Accordingly, the state information can be multiplexed by removing the data broadcast content from the transport stream in which the data broadcast content is multiplexed. The carousel cycle can be shortened when only the status information is transmitted by the data carousel system, as compared with the case where both the data broadcast content and the status information are transmitted by the data carousel system.

Therefore, when updating the user interface screen indicating the state of the apparatus according to the user operation in accordance with the transition of the state of the recording apparatus, the timing at which a new user interface screen is output from the recording apparatus and a new user interface on the display apparatus It is possible to suppress a time lag from when the interface screen can be imaged.
Further, the transport stream may include a plurality of null packets having no information to be transmitted, and the incorporation by the output unit may replace the null packets with the state information.

As a result, the state information can be multiplexed using the excess bandwidth of the transport stream.
Therefore, the state information can be efficiently multiplexed without exceeding the bandwidth in which the information can be transmitted as the entire transport stream.
Further, the transport stream in which the state information is incorporated may be recorded on the recording medium by the read / write unit.

  As a result, the transport stream in which the state information is multiplexed can be recorded on a recording medium, and when the transport stream recorded on the recording medium is read using a playback device without an OSD display function, Also, a user interface screen indicating the state of the apparatus according to the user operation is displayed on the display screen by OSD, and the reproduction operation can be performed while referring to the user interface screen.

Further, the recording medium according to the present invention has the above-described configuration. Even if the user performs an operation of reading a transport stream recorded on the recording medium using a playback device without an OSD display function, With the information multiplexed in the stream, the status of the device according to the user operation is displayed on the display screen by OSD.
Therefore, the user can perform the reproduction operation while referring to the OSD display.

Further, the OSD display control method according to the present invention and the program according to the present invention can transmit, to the display device, state information having the same description format as the data broadcast content that can be imaged on the display device by the above configuration. Can be.
Therefore, on the display device, a screen showing a response to the user operation can be displayed by OSD using the function of imaging the data broadcast content. Furthermore, since there is no need to decode or convert digital broadcast video data into an analog signal for OSD display, a multi-view program or data broadcast, which is a service unique to digital broadcast, can be used. Can be OSD-displayed on the display device in accordance with a user operation even when the device does not have a decoder.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 24.
(Embodiment 1)
<Overview>
The recording apparatus 100 according to the first embodiment describes a user interface screen (hereinafter, a GUI screen) using a BML (Broadcast Markup Language), thereby generating a BML file as state information. The configuration will be described.

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

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

The TS packet includes 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 for identifying the type of TS packet. The TS packet storing each of the video PES 310, the audio PES 320, and the data carousel 330 for data broadcasting has the same value for each type of data to be stored. Is set to the PID. Note that the PMT describes the PID of a TS packet that stores data of the video PES 310, the audio PES 320, and the data carousel 330 for data broadcasting that constitute a 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 included in one TS packet or may be included in one of the TS packets. The adaptation field may be used to transmit information such as a reference time or to determine the packet size of the TS packet. This is an area used for adjustment. The payload is an area where the video PES 310, the audio PES 320, the data carousel 330 for data broadcasting, the PMT, and the like are divided and stored.

Next, the data carousel 330 for data broadcasting used for transmitting a GUI screen in the present invention will be described.
The data carousel 330 for data broadcasting is a unit for repeatedly transmitting data broadcasting contents according to the data carousel method defined in ISO / IEC13818-6, and stores a module storing a BML file for data broadcasting in which data broadcasting contents are described. (DownloadDataBlock) divided into smaller than the size (4084 bytes), and the number of modules transmitted as the data carousel 330 for data broadcasting, and the DII (DownloadInfoIndication) indicating information on each module are arranged in an arbitrary order. Have been.

Since the data broadcast content is packetized into TS packets and repeatedly transmitted at a constant carousel cycle, the display device can display the data broadcast screen in response to the user's operation of calling the data broadcast at an arbitrary timing. .
The TS packetization of the data broadcasting content is performed by dividing the data broadcasting content into 184 bytes in order from the beginning, storing the divided data in the payload of the TS packet, and adding a 4-byte packet header to the beginning of each payload. And storing the data broadcast contents in a group of TS packets. If the end of the data broadcast content is less than 184 bytes after division, stuffing is performed using the adaptation field.

The data broadcast contents of the digital broadcast include BML files, still images (jpeg (Joint Photographic Experts Groups)), PNGs (Portable Network Graphics), and audios (AAC-LC (Advanced Audio Coding Audio), as data stored in the module. -C (Audio Interchange File Format)) and the like, but in this specification, the embodiment will be described using data broadcast content in which only a BML file is stored in a module.
2. System Configuration Next, the configuration of the recording and playback system 1 using the recording device 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 device 100 according to the present invention. The recording and 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 broadcast TS. In the TS received by the antenna 10, a plurality of channels of television broadcast including video data and audio data encoded according to the MPEG-2 standard and a data broadcast accompanying the television broadcast are multiplexed.

  The display device 20 is a digital television that conforms to 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 is capable of viewing television broadcasts composed of video and audio, and displaying data broadcasts as images. 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 transmitting an AVC command to control the 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 a D button) is pressed on the remote controller 30. Specifically, upon receiving the notification indicating that the D button has been pressed, the BML browser graphically starts displaying a BML file for initial display among the BML files transmitted by the data carousel method. The BML file for initial display 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, and the file name is 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 includes a button for selecting a channel, and D buttons, an up button, a down button, and a left button as operation buttons according to the present invention. , Right button, and enter button.
The recording device 100 acquires a TS of a program to be recorded from the TS received by the antenna 10 in the digital tuner 110 and records the recording TS in a stream on the recording medium 130, and a TS recorded in the stream on the recording medium 130. Is a recording / reproducing device having a reproducing function of reading out and transmitting it to the display device 20 via the digital interface unit 120.
3. Recording Apparatus Next, the configuration of the recording apparatus 100 will be described. The recording apparatus 100 includes, as a hardware configuration, a digital tuner 110, a digital interface unit 120, a recording medium 130, a CPU 140, a ROM 150, and a RAM 160.

The digital tuner 110, which is an acquisition unit, acquires a TS for transmitting 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, and outputs a TS to the display device 20 and also functions as a receiving unit that receives a user operation using an AVC command from the display device 20.

  The recording medium 130 is a recording medium capable of recording and reading TS of a program broadcasted by digital broadcasting, and is specifically a DVD-RAM, HDD, or the like. The recording medium 130 includes management information for managing the recording capacity, the remaining amount of the recording capacity, and the like. The occupation capacity (recording time), recording date and time, recording mode (recording bit rate), And channels are also managed by the management information.

The CPU 140 reads and executes the recording control software 203 / reproduction control software 204 stored in the ROM 150, and functions as a read / write unit that controls a process of writing a TS to the recording medium 130 and a process of reading a TS from the recording medium 130. I do.
In addition, the CPU 140 reads and executes the GUI control software 200 stored in the ROM 150, whereby the OSD display of the GUI screen, which is a problem to be solved by the present invention, is realized.
4. Software Configuration Hereinafter, GUI control software 200 for controlling OSD display of a 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 for controlling the OSD display of the GUI screen. The GUI control software 200 is software that causes the CPU 140 to execute a process of generating a user interface screen description document in which the GUI screen is described in BML and multiplexing the user interface screen description document, which is a BML file, in the TS. It comprises functional blocks of 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 group of BML files describing each of a plurality of types of GUI screens when the operation state of the recording device 100 changes according to a user operation received by the digital interface unit 120. It instructs the BML generation unit 230 to update the GUI data 400. The change in the operation state of the recording apparatus 100 that requires updating of the GUI data 400 is at the time of turning on the power of the recording apparatus 100 and at the time of transition between the recording, playback, and standby states. FIG. 4 is a diagram showing the relationship between the state transition of the operation state and the main BML file updated according to the state transition.

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

With the transition from the standby state to the reproduction state, the BML file 410 for the main menu 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.
With the transition from the playback state to the standby state, the BML file 410 for the main menu 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 device 100, and outputs the acquired first TS 300 to the BML generation unit 230. Note that the display TS is a TS read from the recording medium 130 when the recording device 100 is performing 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 as generation means for generating state information includes therein a layout holding unit 231, a device information extraction unit 232, a rewriting unit 233, a BML separation unit 234, and a link adjustment unit 235. It generates a GUI BML file including the GUI screen described in BML, and outputs the generated GUI BML file 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 part whose description content changes according to the state of the recording device 100 is described using an indefinite value. For example, for a menu that accepts focus when the recording device 100 is in the playback state and does not accept focus when the recording device 100 is not in the playback state, the description portion indicating whether the menu accepts focus in the layout file uses an indefinite value. It is described.

The device information extraction unit 232 acquires the following device information indicating the state of the recording device 100 according to an instruction from the control unit 210. The device information includes function mode information, function 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 recording, playing, or in a standby state. The function mode information is transmitted from the recording control software 203 and the reproduction control software 204 that control recording and reproduction. Get information.

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

  The content information includes information indicating an occupied capacity (recording time) for each program, a recording date and time, a recording bit rate, a channel, a program name, and program protection settings recorded on the recording medium 130, and a still image representing each program. The information is obtained from the management information of the program recorded on the recording medium 130, and the still image is obtained from each program recorded on the recording medium 130. Note that the still image representing each program may be the first image of the program or another image.

The reproduction mode information is information indicating a program ID of a program to be reproduced and a reproduction time code (temporal position during reproduction), and is instructed by the control unit 210 during reproduction to be obtained from the program data of the TS being reproduced. I 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 being instructed by the control unit 210 during recording. I do.

  The rewriting unit 233 acquires, from the layout holding unit 231, a layout file corresponding to the BML file instructed to be generated by the control unit 210, and writes a description portion described using an indefinite value in the acquired layout file into the device. A BML file is generated by rewriting based on the device information acquired from the information extracting unit 232, and the generated BML file is output to the link adjusting 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 broadcast data carousel 330 from the first TS 300 acquired from the TS acquisition unit 220, and remultiplexes the video PES 310, the audio PES 320, and the intermediate TS 301 transmitting the program identification information. Output to the conversion unit 240. At this time, at the same time, the frequency at which the TS packet storing the data carousel 330 for data broadcasting is included in the first TS 300 is notified to the remultiplexing unit 240.

Further, the BML separating unit 234 obtains a data broadcasting BML file describing the data broadcasting content from the separated TS packet, and changes the moduleId and the moduleVersion set in the module in the data carousel 330 for data broadcasting. If there is, the acquired data broadcast 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 rewriting unit 233 and the data broadcasting BML file acquired from the BML separation unit 234 on the RAM 160, and stores the data broadcasting BML. When the file and any of the BML files constituting the GUI data 400 are updated, the link between the data broadcast BML file and the GUI data 400 is adjusted, and the data broadcast BML file and the GUI whose link has been adjusted are adjusted. Data 400 is output to remultiplexing section 240. The adjustment of the link between the data broadcast BML file and the GUI data 400 means that the file name of the initial display BML file in the data broadcast BML file is changed from "startup.bml" to "startup2.bml". Further, the link destination of the hyperlink to the BML file for initial display of the data broadcast described in the BML file for data broadcast and the BML file constituting the GUI data 400 acquired from the rewriting unit 233 are described. The link destination of the hyperlink to the data broadcast is set in the BML file (“startup2.bml”) for the initial display of the data broadcast. The changed file name of the BML file for initial display of the data broadcast is not limited to the above-mentioned file name. If the file name does not overlap with another BML file, the file name is changed to another file name. Is also good.

In the present embodiment, when the user presses the D button on the remote controller 30, the initial display screen of the GUI of the recording device 100 is displayed on the display device 20, but the present invention realizes another embodiment. It is also possible. For example, the link adjusting 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 configuring the GUI data 400. The link destination of the hyperlink to the GUI initial display screen is set in a 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 use by using the BML. With this configuration, a normal data broadcast screen is initially displayed on the display device 20 when the D button of the remote controller 30 is pressed.
4.4 Remultiplexing Unit The remultiplexing unit 240 that implements the incorporation of state information into data broadcasting content includes a carousel conversion unit 241, a TS packetization unit 242, and a packet insertion unit 243 therein, and a BML generation unit. The plurality of BML files output by 230 and the TS are multiplexed.

  The carousel conversion unit 241 for realizing the addition of the state information to the data carousel converts the obtained GUI data 400 and the BML file for data broadcasting into modules, and divides DII, which is management information of the module, and the module into a predetermined size. And DDB. Further, the carouseling section 241 arranges the generated DDB and DII, generates a GUI data carousel 331, and outputs it to the TS packetizing section 242.

The TS packetizer 242 converts the GUI data carousel 331 into TS packets. The TS packetizer 242 sets the PID of the generated TS packet to a value specified by the PMT as the PID of the TS packet that stores the data carousel 330 for data broadcasting.
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 generation unit 241.

The packet insertion unit 243 obtains the TS packet in which the GUI data carousel 331 is divided and stored from the RAM 160, and multiplexes the obtained TS packet to the intermediate TS 301, thereby obtaining the video PES 310, the audio PES 320, and the GUI data carousel. 331 and a second TS 302 for transmitting the program specifying information.
Here, the packet insertion unit 243 uses 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, for the GUI. The TS packet storing the data carousel 331 is inserted into the intermediate TS 301. Accordingly, 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 transmits the data broadcast data carousel 330 by the first TS 300. It becomes possible to transmit the data carousel 331 for GUI with the used bandwidth.

  FIG. 5 is a schematic diagram showing carousel periods of the data carousel 330 for data broadcasting and the data carousel 331 for GUI. The data carousel 330 for data broadcasting is composed of a group of packets (broadcast BMLs A1 to A3) obtained by converting data broadcasting BML files describing data broadcasting contents into TS packets. The GUI data carousel 331 includes a packet group (GUI BML1 and GUI BML2) obtained by converting GUI data 400, which is a group of BML files describing a GUI screen, into TS packets, and a data broadcast whose file name is changed by the link adjustment unit 235. A packet group (broadcast BML B1 to B3) obtained by converting the BML file for use into TS packets.

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

The generated second TS 302 is output to the display device 20 by the digital interface unit 120, and when the second TS 302 is input, the display device 20 can display the GUI screen in the same procedure as the display of the data broadcast screen. it can.
Note that the recording device 100 according to the present invention may write the second TS generated in the remultiplexing unit to a recording medium by the recording control software 203. Thus, even when the recording medium on which the TS is recorded is read by using a reproducing apparatus without the OSD display function, the GUI screen can be displayed by OSD.
5. BML File Next, the details of the GUI BML file described by the recording device 100 will be described. FIG. 6 is a diagram illustrating a configuration of the GUI data 400 generated by the recording device 100. The GUI data 400 includes a BML file 410 for the main menu, a BML file 420 for the program navigation, a BML file 430 for the reproduced program, a BML file 440 for the guidance, a BML file 450 for the reservation setting, and a BML file for the reproduced program. 430 includes a plurality of still image files. Each BML file is converted into a graphic by the BML browser of the display device 20 and displayed by OSD.

  The main menu BML file 410 is a BML file in which a menu for each GUI screen provided by the recording apparatus 100 is displayed, and a main menu screen for operating a program being recorded or 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 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 in BML for each program, and has 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 an 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 for calling the guidance screen is provided. Are composed of four BML files corresponding to.
The reservation setting BML file 450 is a BML file in which a reservation setting screen for managing recording reservation of a program is described in BML.

A description example of the BML file 430 for a reproduced program is shown below as an example of the BML file for the GUI. FIG. 7 is a description example of a BML file for a reproduced program.
The description unit 1 is a description unit that describes a display style such as a display position on the screen, a background color, and accepted key operations of each object displayed on the playback program screen.
The description unit 2 is a description unit that describes an operation corresponding to a key operation on a playback program screen. The description unit 2 describes an operation of issuing an AVC command for instructing playback, and an operation of issuing an AVC command for stopping. Includes a description part 4 that is described.

The description part 5 is a description part that describes 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, a configuration and an operation method of a GUI described by the recording device 100 in BML 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 rendered graphically by a BML browser.

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

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

  On this screen, each menu of the operation menu display unit 510c and any one of the menus of the menu display unit 510e are focused, and by pressing the right button and the left button of the remote control 30, When one of the operation menu display unit 510c and the menu display unit 510e is selected as an operation target and the upper button and the lower button of the remote controller 30 are pressed, the focus moves to a menu vertically adjacent to the operation target. . The background color of each menu at the time of non-focus is green, and the background color of the focused menu changes to yellow.

When the operation state of the recording apparatus 100 is recording or reproducing, the function mode information display unit 510a displays “recording” or “reproducing” to display the current operation state of the recording apparatus 100. Show.
The index screen display unit 510b is an area for displaying a moving image of the video PES 310 displayed on the screen of the display device 20 before pressing the D button. The video is displayed, and when recording or waiting, the video of the selected channel is displayed.

The operation menu display section 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 to instruct recording of a channel (TS output by 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. When the user presses the enter button on the remote controller 30 while the menu is focused, an AVC command for instructing recording of the currently displayed channel is transmitted from the display device 20 to the recording device 100. When the operation state of the recording apparatus 100 is recording or reproduction, the menu is set to a state in which the background color is gray and focus is not received. Hereinafter, a state in which such a menu does not receive focus is referred to as a grayed state.

  The stop operation menu is a menu that accepts an operation for instructing stop of recording or playback when the operation state of the recording device 100 is recording or playback. When the user focuses on the remote control while the menu is focused, By pressing the determination button 30, an AVC command for instructing the operation to be stopped is transmitted from the display device 20 to the recording device 100. When the operation state of the recording device 100 is in a standby state, 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 of a program to be reproduced, respectively, when the operation state of the recording device 100 is being reproduced. When the user presses the enter button on the remote controller 30 in a state where one of the menus of the rewind operation menu is focused, the corresponding AVC command is transmitted from the display device 20 to the recording device 100. When the recording device 100 is in an operation state other than the reproduction state, 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 is being specially played (fast-forward playback or rewind playback) by operating the fast-forward operation menu or the rewind operation menu. When the user presses the enter button of the remote controller 30 in the focused state, an AVC command for instructing reproduction is transmitted from the display device 20 to the recording device 100. When the recording device 100 is in an operation state other than the reproduction state, the menu is set in a grayed state.

The recording / playback mode information display unit 510d displays the occupied capacity of the recorded program, the program being played back, and the program being recorded on a bar display showing the entire capacity of the recording medium 130. When the operation state is the reproduction, a triangle indicating the temporal position during the reproduction is displayed. FIG. 9 is a diagram showing details of the recording / playback mode information display section 510d.
The menus of the program navigation menu, the reservation menu, and the help menu on the menu display unit 510e are links in which hyperlinks are set to the program navigation BML file 420, the reservation setting BML file 450, and the guidance BML file 440, respectively. When the user presses the enter button on the remote controller 30, the BML file in 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. When the menu is focused, when the user presses the enter button of the remote control 30, the menu is hyperlinked. The data broadcast BML file is displayed in a graphic form.
(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 graphic display of 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 this screen, any one of the programs listed in the content information list display section 520a and any one of the menus in the menu display section 520b are focused, and the remote control 30 By pressing the up button and the down button, the focus of the program displayed in the list on the content information list display section 520a moves up and down, and by pressing the left button and the right button of the remote control 30, The focus moves to the adjacent menu. The background color of the focused program and menu changes.

The content information list display section 520a displays a list of all programs recorded on the recording medium 130, and displays the content information extracted by the device information extraction section 232 for each program.
When the user presses the enter button of the remote controller 30 in a state where the menu is focused, the selection menu of the menu display unit 520b is displayed as a BML file for a reproduced program relating to the program focused on the content information list display unit 520a. A link menu 430 is displayed in a graphic form. When the currently reproduced program is selected in the content information list display section 520a, the user presses the enter button of the remote controller 30 while the menu is focused, so that the main menu BML file is displayed. 410 is graphicized.

The back menu and the help menu of the menu display unit 520b are link menus in which hyperlinks to the main menu BML file 410 and the guidance BML file 440 are set, respectively. By pressing, a BML file to which one of the focused menus is hyperlinked is graphically displayed.
(Playback program screen)
FIG. 11 is a screen example of a reproduced program screen 530 in which the reproduced program BML file 430 is made into a graphic.

  The playback program screen 530 is a screen in which a BML file related to the program selected on the program navigation screen 520 among the playback program BML files 430 is made into a graphic, and a function mode information display section 530a indicating the operation state of the recording device 100 and , An index screen display section 530b, an operation menu display section 530c, and a menu display section 530d including a return menu and a help menu.

  On this screen, each menu of the operation menu display unit 530c and any one of the menus of the menu display unit 530d are focused, and by pressing the right button and the left button of the remote control 30, When one of the operation menu display section 530c and the menu display section 530d is selected as an operation target and the upper button and the lower button of the remote controller 30 are pressed, the focus moves to a menu vertically adjacent to the operation target. . The background color of the focused menu changes to yellow.

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

The operation menu display section 530c includes a reproduction operation menu and a stop operation menu.
The reproduction operation menu is a menu for receiving an operation for instructing reproduction of a program related to the screen. When the user presses the enter button of the remote controller 30 in a state where the menu is focused, an AVC command for instructing reproduction of a program related to the screen is transmitted from the display device 20 to the recording device 100.

The stop operation menu is a menu that accepts an operation of stopping reproduction of a program related to the screen. When the user presses the enter button on the remote controller 30 in a state where the menu is focused, an AVC command instructing to stop the operation is transmitted from the display device 20 to the recording device 100.
The return menu and the help menu in the menu display section 530d are link menus in which hyperlinks to the program navigation BML file 420 and the guidance BML file 440 are set, respectively. By pressing, a BML file for GUI to which one of the focused menus hyperlinks is graphicized and displayed.
(Guidance screen)
FIG. 12 is a screen example of the guidance screen 540 in which the guidance BML file 440 is made into a graphic.

The guidance screen 540 is a screen in which, among the guidance BML files 440, a BML file describing the operation description of the GUI screen of the caller is displayed in a graphic form, and displays a text display unit 540a and a menu display unit 540b.
By pressing the upper button and the lower button of the remote controller 30 on the screen, the display content of the text display unit 540a is scrolled.

The text display unit 540a displays a textual description of the operation of the GUI screen from which the screen is called.
The return menu of the menu display unit 540b is a link menu in which a hyperlink to a BML file describing a GUI screen from which the screen is called is set. A BML file hyperlinked by is graphically displayed.
(Reservation setting screen)
FIG. 13 is a screen example of a reservation setting screen 550 in which the reservation setting BML file 450 is made into a graphic.

The reservation setting screen 550 is a graphic display of the reservation setting BML file 450, and displays a program guide display section 550a and a menu display section 550b including a reservation menu, a return menu, and a help menu.
On this screen, any one of the programs listed in the program table display section 550a and any one of the menus in the menu display section 550b are focused, and the remote control 30 By pressing the up button and the down 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 controller 30, the programs 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 color.

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

  The back menu and the help menu in the menu display unit 550b are link menus in which hyperlinks to the main menu BML file 410 and the guidance BML file 440 are set, respectively. By pressing, a BML file to which one of the focused menus is hyperlinked is graphically displayed.

  Although the recording device 100 describes each GUI screen described above using BML, the recording device 100 may describe other GUI screens using BML. For example, the recording apparatus 100 displays detailed information for each program recorded on the recording medium 130 in addition to the GUI screens described above, and manages the settings of each program such as deleting a program or changing a protection setting. May be described using BML. In addition, the present invention relates to the operation of the recording apparatus 100, such as changing the media protection setting, selecting a display language, and selecting a use area to cope with a digital TV broadcasting system that differs for each country such as DVB (Digital Video Broadcasting). A function setting screen 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, the operation of the recording device 100 and the display device 20 according to the 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 according to an operation using the 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 for separating a plurality of pieces of information (video, audio, data carousel, etc.) multiplexed in the TS, and an MPEG-2 decoder for decoding video and audio encoded according to the MPEG-2 standard. Including.

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

  The determining unit 20f and the command creating unit 20g are functional blocks realized by the CPU of the display device 20 executing software, respectively. The determining unit 20f determines whether the signal received by the receiving unit 20e is Which signal of the display device 20 is instructed is determined according to the display state of the GUI screen, and the command creating unit 20g determines that the signal instructs the operation of the recording device 100 by the determining unit 20f. 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 obtains a TS from one of the digital interface 20a and the digital tuner 20b, demultiplexes the TS by the decoder 20c, and is multiplexed. In addition to playing back the video and audio, the multiplexed BML file is output to a memory and stored.
When a button on the remote controller 30 is pressed by the user, a signal is transmitted from the remote controller 30 to the reception unit 20e.

At this time, if 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, when the user presses the D button, if the GUI screen is not displayed, the determination unit 20f instructs the GUI display unit 20d to start the imaging of the BML file, and outputs the GUI screen. Is displayed, the determination means 20f instructs the GUI display means 20d to end the imaging of the BML file.

  When the user presses any of the up button, the down 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 in a state where a link menu in which a hyperlink to another GUI screen is set is focused, the determination unit 20f sends the link destination to the GUI display unit 20d. Of the BML file is imaged.

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

The command creation unit 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 device 100, the digital interface unit 120 notifies the CPU 140 of the user operation indicated by the AVC command, and the notified CPU 140 executes the recording control software 203 and the reproduction control software 204 to perform recording, reproduction, and the like. The operation of is realized. At the same time, the CPU 140 updates the BML file (GUI data 400) according to the operation state of the recording device 100, multiplexes the BML file with the TS, and outputs the multiplexed TS 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 function of the recording device 100, and confirms the operation with the updated GUI. Can be.

<Operation>
Next, the operation of the recording device 100 configured as described above will be described.
FIG. 15 is a diagram showing a flow of an operation of controlling the OSD display of the GUI screen in the recording device 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 of generating the GUI data 400 based on the instruction of the control unit 210 (S2).
The remultiplexing unit 240 performs a remultiplexing process for multiplexing the GUI data 400 generated by the BML generating unit 230 and the TS (S3), and the multiplexed TS is transmitted to the display device 20 by the digital interface unit 120. It is output (S4).

  When the display TS is changed by a user's operation such as recording, playback, or stop (S5: Yes), the TS acquisition unit 220 changes the TS to be acquired (S1). If there is no change in the TS for display (S5: NO) and it is necessary to change any of the GUI screens due to a change in the operation state of the recording device 100 (S6: Yes), the BML is generated according to an instruction from the control unit 210. The unit 230 performs the BML generation process and updates the GUI data 400 (S2).

If there is no need to change the GUI screen (S6: No), the remultiplexing unit 240 repeats the remultiplexing process of multiplexing the generated GUI data 400 on the TS (S3).
Through the above operation, the GUI control software 200 can generate a TS in which the GUI data 400 configured by a plurality of GUI BML files describing the GUI screen 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 illustrating a flow of the operation of the BML generation processing in the BML generation unit 230.
First, the BML separation unit 234 obtains the value of the PID of the TS packet storing the PMT from the PAT stored in the TS packet whose PID is “0x0000” included in the first TS 300 (S11).

The BML separating unit 234 specifies the TS packet storing the PMT from the first TS 300 based on the obtained PID value, and obtains the PID value of the TS packet storing the data broadcasting data carousel 330 from the PMT. (S12).
The BML separating unit 234 separates all the TS packets having the PID value obtained in S12 from the first TS 300, obtains the data broadcasting data carousel 330 stored in the separated TS packet group, and converts the TS packet group. The separated intermediate TS 301 is output to the remultiplexing unit 240 (S13). At this time, the frequency at which the TS packet storing the data carousel 330 for data broadcasting is included in the first TS 300 is also notified to the remultiplexing unit 240.

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

  On the other hand, when instructed by the control unit 210 to generate a BML file that forms 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) Further, the device information is acquired from the device information extracting unit 232 (S18). The rewriting unit 233 generates a target BML file from the layout file and the device information acquired by the above operation, and outputs the generated BML file to the link adjustment unit 235 (S19).

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

By the above operation, the BML generation unit 230 completes the generation of the GUI data 400 configured by a plurality of GUI BML files in which the GUI screen is described using BML.
Next, the operation flow of the remultiplexing process (S3 in FIG. 15) will be described in detail. FIG. 17 is a diagram showing a flow of the operation of the remultiplexing process in the remultiplexing unit 240.
First, when acquiring the GUI data 400 and the data broadcasting BML file from the link adjusting unit 235 (S31: Yes), the carousel conversion unit 241 converts the acquired GUI data 400 and the data broadcasting BML file into ISO / IEC13818. The modules are summarized in the module specified in -6 (S32).

The carouseling unit 241 further generates DII, which is management information of the module, and arranges a DDB obtained by dividing the module into a predetermined size (a data portion of 4,066 bytes) and DII to generate a data carousel 331 for the GUI. The generated GUI data carousel 331 is output to the TS packetizer 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, and inserts the acquired TS packet into the intermediate TS 301 acquired from the BML separation unit 234 to generate the second TS 302 (S35). Note that the packet insertion unit 243 uses the same frequency as the frequency at which the TS packet that is divided from the data carousel 330 for data broadcasting and is stored in the first TS 300 and that is notified from the BML separation unit 234 is included in the first TS 300. The TS packet storing the divided 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 data broadcast data carousel 330 multiplexed in the first TS 300 is used. The control software 200 has been described. In the second embodiment of the present invention, GUI control software 201 for multiplexing the data carousel 331 for GUI with a wider bandwidth by using a null packet included in the TS will be described.

<Structure>
FIG. 18 is a block diagram illustrating 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 to a BML acquisition unit 236 and changing the packet insertion unit 243 to a packet replacement unit 244. . Note that the same components as those of the GUI control software 200 are denoted by the same reference numerals, and description thereof will be omitted.

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

Further, the BML obtaining unit 236 changes the PID values of all the TS packets that store the data broadcast data carousel 330 included in the first TS 303 to “0x1FFF” indicating that the packet is a null packet. Is converted into an intermediate TS 304 shown in FIG. 19B, 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 information to be transmitted (video, audio, and data broadcast) is less than a predetermined amount of information, null packets are added to TS packets constituting the TS, and the information transmission speed is adjusted. ing. The null packet is a TS packet that does not transmit information, and has a PID value set to “0x1FFF”. The adjustment of the transmission rate of the TS using the null packet is performed by a broadcasting station that broadcasts the first TS 303.

  The packet replacing unit 244 obtains TS packets (BML 11 to 15) in which the GUI data carousel 331 is divided and stored from the RAM 160, and obtains the obtained TS packets and the null packet included in the intermediate TS 304 obtained from the BML obtaining unit 236. Is generated, the second TS 305 shown in FIG. 19C is generated. The generated second TS 305 is a TS that transmits the video PES 310, the audio PES 320, the data carousel 331 for GUI, and the program specifying information.

With the above configuration, the GUI control software 201 can use the GUI control software 201 with a bandwidth wider than the bandwidth in which the data carousel 330 for data broadcasting is multiplexed on the first TS 303 without exceeding the bandwidth for transmitting information as the entire TS. The second TS 305 in which the data carousel 331 is multiplexed can be generated.
<Operation>
Next, the operation flow of the BML generation processing and the re-multiplexing processing in the GUI control software 201 will be described.

FIG. 20 is a diagram illustrating a flow of the operation of the BML generation processing in the BML generation unit 230.
Hereinafter, the same operation as the flow of the BML generation processing in the GUI control software 200 illustrated in FIG. 16 will not be described, and the rewriting unit 233 determines whether the control unit 210 has a BML generation instruction. The operation up to the step of performing (S16 in FIG. 16 and S47 in FIG. 20) will be described.

  First, the BML obtaining unit 236 obtains the value of the PID of the TS packet storing the PMT from the PAT stored in the TS packet having the PID “0x0000” included in the first TS 303 (S41). The BML obtaining unit 236 specifies the TS packet storing the PMT from the first TS 303 based on the obtained PID value, and obtains 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 the TS packets having the PID value acquired in S42 from the first TS 303, and divides the TS packets into payloads of the identified TS packet group to store the data carousel 330 for data broadcasting. It is restored (S43). The BML obtaining unit 236 changes the PIDs of all the 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 the data broadcast BML file in the module has been updated from the parameters set in the module configuring the data broadcast data carousel 330 acquired in S43 (S45), and is updated. If yes (S45: Yes), the data broadcast BML file is output to the link adjusting unit 235 (S46).
Thereafter, the flow of operation similar to the operation after S16 in FIG. 16 is executed, thereby completing the BML generation processing.

Next, the operation flow of the remultiplexing process will be described in detail.
FIG. 21 is a diagram illustrating a flow of the operation of the remultiplexing process in the remultiplexing unit 240.
Hereinafter, a description of the same operation as the operation flow of the remultiplexing process in the GUI control software 200 shown in FIG. 17 is omitted, and the TS packetizing unit 242 converts the GUI data carousel 331 into TS packets (see FIG. 17). 17 and S64 in FIG. 21 will be described.

  In the carouseling unit 241, when the GUI data 400 and the data broadcasting BML file are not updated from the link adjustment unit 235 (S 61: No), the TS packetizing unit 242 converts the GUI data carousel 331 into TS packets. Later (S64), the packet replacing unit 244 obtains a TS packet storing the GUI data carousel 331 from the RAM 160, and replaces the obtained TS packet with a null packet included in the intermediate TS 304 obtained from the BML obtaining unit 236. Then, 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 multiplexed with the data broadcast BML file and the GUI data 400 has been described. In the third embodiment, the output TS The GUI control software 202 that does not include data broadcasting will be described.

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

The rewriting unit 237 has the same function as the rewriting unit 233 described in Embodiment 1, and outputs the generated BML file to the carousel conversion unit 241. If a still image file related to the generated BML file is included in the device information, the still image file is output to the carousel conversion unit 241 together with the generated BML file.
The BML separation unit 238 separates a TS packet storing the data broadcast data carousel 330 from the first TS 306 acquired from the TS acquisition unit 220. The TS packet storing the data carousel 330 for data broadcasting after separation is discarded, and the intermediate TS 307 transmitting the video PES 310, the audio PES 320, and the program specifying information is output to the remultiplexing unit 240. At this time, at the same time, the frequency at which the TS packet storing the data broadcast data carousel 330 is included in the first TS 306 is notified to the remultiplexing unit 240.

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 than the GUI data carousel 331 in Embodiments 1 and 2 by not including the data broadcast BML file, and The response of the update of the GUI screen in accordance with 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 describing data broadcasting content of the above standard is used as a language for describing state information. Although the present invention has been described using the present invention, the present invention is not limited to the digital broadcasting standard formulated by ARIB, but can be applied to other digital broadcasting standards.

  In the fourth embodiment, an application execution engine (for example, Java (registered trademark)) 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. Trademark) VM, and to a display device that executes a procedural application (for example, a Java (registered trademark) program) acquired from a data broadcast, the layout and display contents of a user interface screen using the application and a data structure usable in the application The recording apparatus 101 that multiplexes the status information describing the information and the like into a transport stream and sends the multiplexed information is described.

<Structure>
1. System Configuration FIG. 23 is a diagram showing a configuration of a recording / reproducing system 2 using the recording device 101 according to the fourth embodiment.
The recording / reproducing system 2 is a recording / reproducing system for recording / reproducing a digital broadcast, in which the display device 20 of the recording / reproducing system 1 described in the first embodiment is changed to a display device 21. The same components as those in the recording / reproducing system 1 are denoted by the same reference numerals, and their description will be omitted.

  Data broadcasting is multiplexed on digital broadcasting of the MHP (Multimedia Home Platform) standard received by the antenna 10. The data broadcasting content of the MHP standard includes an application (hereinafter simply referred to as an application) described using a device-independent bytecode language and a document used by the application, and the application and the document are connected by an object carousel. Transmitted.

The display device 21 has an MPEG-2 decoder inside so as to be able to watch television broadcasts, and has an application execution engine for executing applications, and can also use MHP standard data broadcasts. The display device 21 further has a function of transmitting, to the recording device 101, an AVC command for controlling devices connected by an IEEE1394 cable, similarly to the display device 20.
2. Recording Device The recording device 101 has the same hardware configuration as the recording device 100. The ROM 150 stores 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 illustrating a functional configuration of the GUI control software 205 for controlling 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 of the GUI control software 200 are denoted by the same reference numerals, and description thereof will be 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 a process similar to the process by which the BML separation unit 234 separates the data broadcast data carousel 330 from the first TS 300. Also, the separation unit 251 outputs the intermediate TS 342 obtained by separating the data broadcasting object carousel from the first TS 341 to the remultiplexing unit 260, acquires the data broadcasting content from the data broadcasting object carousel, and sends the data broadcasting 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.
Each time the BML generation unit 230 outputs the GUI data 400 and the data broadcast content, the carousel generation unit 241 generates an object carousel that transmits the GUI data 400 and the data broadcast content acquired from the BML generation unit 250. However, when the recording apparatus 101 is started, the carousel conversion unit 241 acquires the BML browser application from the application storage unit 262, and adds the BML browser application to the GUI data 400 and the data broadcast content acquired from the BML generation unit 250. Generate an object carousel for transmission.

The carousel generator 241 outputs the generated object carousel to the TS packetizer 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 device 101 can transmit the BML browser application to the display device 21 at the time of startup.

The BML browser application is executed by an application execution engine included in the display device 21, and the BML browser application converts the user interface screen description document constituting the GUI data 400 into an image to realize OSD display.
(Other modifications)
Although the present invention has been described based on the first to fourth embodiments, it is needless to say that the present invention is 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, these methods may be a computer program that is realized by a computer, or may be a digital signal formed by the computer program.
Further, the present invention provides a computer-readable recording medium capable of reading the computer program or the digital signal, for example, a flexible disk, a hard disk, a CD-ROM, an MO, a DVD, a DVD-ROM, a DVD-RAM, and a BD (Blu-ray Disc). ), And may be 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.

Further, according to 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.

Further, 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, so that it is executed by another independent computer system. It may be.
(2) In the first embodiment, the recording device according to the present invention receives a digital broadcast TS from an antenna. However, the present invention may acquire the TS by another method. For example, the recording device may include an external input terminal and acquire a TS output from another reproduction device, or acquire a TS from a cable television or the like. Further, the recording device according to the present invention may mount a recording medium on which the TS is recorded, and read the recorded TS from the recording medium.
Embodiment 1
(3) In the first to fourth embodiments, the recording apparatus having the configuration for transmitting the TS via the digital interface unit has been described. The recording apparatus according to the present invention is configured such that, in addition to the above configuration, the video multiplexed in the TS is converted into an analog video signal such as an NTSC signal or a PAL signal, and the analog video signal is transmitted via an analog interface. May be provided, and the video output may be switched between analog and digital according to 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 digital output component group for describing a GUI screen using BML and multiplexing it into a TS, a video signal for conventional OSD display is displayed. A component group for analog output which is generated and superimposed on an analog video signal is provided. A component group for digital output and a component for analog output are provided for realizing OSD display according to switching of video output. You may switch to a group.

(4) In the fourth embodiment, the configuration in which the BML browser and the BML file (state 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 status information is not limited to the BML file.
A procedural application output by the recording device can be executed by the application execution engine of the display device, and information describing a screen layout in a predetermined data structure can be converted into an image. If the user interface screen is described in a data structure that can be interpreted and imaged by the type application, the OSD display, which is an object of the present invention, can be realized.

Further, the recording device does not necessarily need to output both the procedural application and the state information.
If the display device equipped with the application execution engine already has a procedural application for imaging information described in a predetermined data structure, the recording device of the present invention can be used to set the layout and device of the user interface screen. 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 state information to a display device.

  (5) In the first to fourth embodiments, the stream data used for recording a program on a recording medium and outputting to a display device has been described as stream data of the MPEG-2 TS system. The characteristics do not depend on the specifications of the MPEG-2 TS system, and stream data used for recording and output may be any type of stream data that can transmit video data and status information. There may be.

For example, stream data of the MPEG-2 PS system may be used, or stream data other than the MPEG standard may be used.
(6) The above embodiments 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.

FIG. 3 is a schematic diagram of a TS transmitting one program. FIG. 1 is a diagram illustrating a configuration of a recording and playback system 1 using a recording device 100 according to the present invention. FIG. 3 is a block diagram illustrating a functional configuration of GUI control software 200 for controlling OSD display on a GUI screen. FIG. 9 is a diagram illustrating a relationship between a state transition of an operation state and a main BML file updated according to the state transition. FIG. 4 is a schematic diagram showing carousel periods of a data carousel for data broadcasting 330 and a data carousel for GUI 331. FIG. 3 is a diagram showing a configuration of GUI data 400 generated by the recording device 100. It is a description example of a BML file for a reproduction program 430. 5 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 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 made into a graphic. It is a screen example of the reproduction program screen 530 in which the reproduction program BML file 430 is made into a graphic. It is a screen example of the guidance screen 540 in which the guidance BML file 440 is made into a graphic. It is a screen example of a reservation setting screen 550 in which a reservation setting BML file 450 is made into a graphic. FIG. 9 is a diagram schematically illustrating transmission of an AVC command from the display device to the recording device by an operation using a GUI screen. FIG. 7 is a diagram showing a flow of an operation for controlling the OSD display of the GUI screen in the recording device 100 according to the embodiment of the present invention. FIG. 9 is a diagram illustrating a flow of an operation of a BML generation process in a BML generation unit 230. FIG. 5 is a diagram showing a flow of an operation of a remultiplexing process in a remultiplexing unit 240. FIG. 3 is a block diagram illustrating a functional configuration of a GUI control software 201. FIG. 3 is a schematic diagram showing a TS including a null packet. FIG. 9 is a diagram illustrating a flow of an operation of a BML generation process in a BML generation unit 230. FIG. 5 is a diagram showing a flow of an operation of a remultiplexing process in a remultiplexing unit 240. FIG. 3 is a block diagram illustrating a functional configuration of GUI control software 202. FIG. 14 is a diagram showing a configuration of a recording / reproducing system 2 using a recording device 101 according to Embodiment 4. FIG. 3 is a block diagram illustrating a functional configuration of GUI control software 205 that controls OSD display of a GUI screen.

Explanation of reference numerals

1, 2 Recording / reproducing system 10 Antenna 20, 21 Display device 20a Digital interface 20b Digital tuner 20c Decoder 20d GUI display means 20e Receiving means 20f Judging means 20g Command creating means 30 Remote controller 100, 101 Recording device 110 Digital tuner 120 Digital interface section 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 Rewriting unit 234, 238 BML separation unit 235 Link adjustment unit 236 BML acquisition unit 240, 260 Remultiplexing unit 241, 261 Carouseling unit 242 TS packetizing unit 243 Packet inserting unit 244 Packet replacing unit 251 Separating 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 carousel for data broadcasting 331, 332 Data carousel for GUI 344 Object carousel for GUI 400 GUI data 410 BML file for main menu 420 BML file for program navigation 430 BML file for playback program 440 BML file for guidance 450 BML file for reservation setting 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 (49)

Acquiring means for acquiring a transport stream including video data and data broadcast content;
Receiving means for receiving a user operation;
A process of writing a transport stream to a recording medium, and a process of reading the transport stream from the recording medium, a read / write unit that executes the process according to the user operation;
Generating means for generating state information indicating a state of the apparatus according to the user operation, in the same description scheme as the data broadcast content;
An output unit that outputs the generated state information to a display device via a digital interface. The display device displays a graphic user interface,
The recording apparatus according to claim 1, wherein the state information includes at least a control command for controlling a graphic user interface that receives the user operation. 3. The recording apparatus according to claim 2, wherein the description method of the data broadcast content is a description in one of a markup language and a device-independent bytecode language. 4. The recording apparatus according to claim 3, wherein the status information generated by the generation unit is a user interface screen description document described in the description method, and includes a hyperlink to a data broadcast content. The recording device further includes a link providing unit that provides a hyperlink to the data broadcast content,
4. The recording apparatus according to claim 3, wherein the status information generated by the generation unit is a user interface screen description document described in the description method, and is a link destination of the hyperlink.   4. The recording apparatus according to claim 3, wherein the output unit is configured to output an application which is described in a device-independent bytecode language together with the state information and converts the state information into an image to a display device. 5. Holding means for holding layout information describing the layout of the user interface screen in a markup language,
Device information extracting means for obtaining device information indicating the state of the own device according to the user operation,
The method according to claim 3, wherein the generation of the state information by the generation unit is performed by acquiring layout information from the holding unit and rewriting the layout information according to a state indicated by the device information. Recording device. The device information is
Function mode information indicating an operation state of the recording apparatus, function operation information describing an operation method of the user interface screen, and media information indicating a state of the recording medium including a remaining recording capacity of the recording medium; 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 time during writing at the time of writing. The recording apparatus according to claim 7, wherein the recording apparatus is any one of recording mode information indicating a target position or a combination thereof. The recording apparatus according to claim 2, wherein the receiving unit receives operation information indicating a user operation from a display device via the digital interface. 2. The recording apparatus according to claim 1, wherein the output unit incorporates the status information into the data broadcast content and outputs the data broadcast content to a display device. The data broadcast content is multiplexed into a transport stream by a data carousel method,
11. The recording apparatus according to claim 10, wherein the incorporation by the output unit includes adding state information to a data carousel for transmitting data broadcast content. The addition to the carousel by the output means,
Separating the transport stream into a data carousel and an intermediate transport stream,
Generating a new data carousel from the data broadcast content and the state information included in the separated data carousel,
The recording apparatus according to claim 11, wherein the incorporation by the output unit includes a process of multiplexing the new data carousel and the intermediate transport stream. The multiplexing of the new data carousel and the intermediate transport stream by the output unit is performed with the same bandwidth as the bandwidth of the transport stream at the stage obtained by the obtaining unit. Recording device. The incorporation by the output means includes removing the data broadcast content from the data broadcast content and the intermediate transport stream constituting the transport stream, and multiplexing the state information with the intermediate transport stream. The recording device according to claim 10, wherein: The transport stream includes a plurality of null packets having no information to be transmitted,
11. The recording apparatus according to claim 10, wherein the incorporation by the output unit replaces the null packet with the status information. The recording apparatus according to claim 10, wherein the transport stream in which the state information is incorporated is recorded on the recording medium by the read / write unit. A recording medium on which a transport stream is recorded,
The recording medium according to claim 1, wherein the transport stream includes information indicating a state of the apparatus according to a user operation, multiplexed with video data. An acquisition step of acquiring a transport stream including video data and data broadcast content;
A receiving step of receiving a user operation;
A process of writing the transport stream to the recording medium, and a step of reading and writing the process of reading the transport stream from the recording medium according to the user operation;
A generating step of generating state information indicating a state of the apparatus according to the user operation in the same description scheme 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,
19. The OSD display control method 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. 20. The OSD display control method according to claim 19, wherein the description method of the data broadcast content is a description in one of a markup language and a device-independent bytecode language. 21. The OSD display control 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 a data broadcast content. Method. The OSD display control method further includes a link providing step of providing a hyperlink to the data broadcast content,
21. The OSD display control method 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 is a link destination of the hyperlink. 21. The OSD according to claim 20, wherein the output of the state information in the output step is described in a device-independent bytecode language, and accompanies the output of an application for imaging the state information to a display device. Display control method. The generating step is a layout obtaining sub-step of obtaining layout information describing the layout of the user interface screen in a markup language,
Device information extraction sub-step of obtaining device information indicating the state of the device itself according to the user operation,
21. The OSD display control method 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 device, function operation information describing a method of operating the user interface screen, and a state of the recording medium including a remaining recording capacity of the recording medium. Media 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 being read at the time of reading, and 25. The OSD display control method according to claim 24, wherein the OSD display control method is any one of recording mode information indicating a temporal position during writing or a combination thereof. 20. The OSD display control method according to claim 19, wherein the receiving of the user operation in the receiving step is performed by receiving operation information indicating the user operation from a display device via the digital interface. 19. The OSD display control method according to claim 18, wherein in the outputting step, the status 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 OSD display control method 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 means that the transport stream is separated into a data carousel and an intermediate transport stream, and a new data carousel is generated from data broadcast content and state information included in the separated data carousel. Is to do
29. The OSD display control method 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 method according to claim 29, wherein the multiplexing of the new data carousel and the intermediate transport stream in the output step is performed with the same bandwidth as that of the transport stream at the stage obtained in the obtaining step. OSD display control method. The incorporation by the output step is characterized in that the data broadcast content is removed from the data broadcast content and the intermediate transport stream constituting the transport stream, and the state information is multiplexed with the intermediate transport stream. 28. The OSD display control method according to claim 27, wherein The transport stream includes a plurality of null packets having no information to be transmitted,
28. The OSD display control method according to claim 27, wherein the incorporation by the output step includes replacing the null packet with the status information. The OSD display control method further includes:
28. The OSD display control method according to claim 27, further comprising a writing step of recording the transport stream incorporating the state information on the recording medium. 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 receiving step of receiving a user operation;
A process of writing the transport stream to the recording medium, and a step of reading and writing the process of reading the transport stream from the recording medium according to the user operation;
A generating step of generating state information indicating a state of the computer according to the user operation in the same description scheme as the data broadcast content;
Outputting the generated status information to a display device via a digital interface. The display device displays a graphic user interface,
The program according to claim 34, 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 35, wherein the description method of the data broadcast content is a description in one of a markup language and a device-independent bytecode language. 37. The program according to claim 36, 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 a data broadcast content. The program further includes a link providing step of providing a hyperlink to the data broadcast content,
The program according to claim 36, 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. 37. The program according to claim 36, wherein the output of the state information in the output step is described in a device-independent bytecode language, and accompanies an output of an application for imaging the state information to a display device. . The generating step is a layout obtaining sub-step of obtaining layout information describing the layout of the user interface screen in a markup language,
Device information extraction sub-step of obtaining device information indicating the state of the device itself according to the user operation,
37. The program according to claim 36, 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 describing a method of operating the user interface screen, and a state of the recording medium including a remaining recording capacity of the recording medium. Media 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 being read at the time of reading, and writing. 41. The program according to claim 40, wherein the program is any one of recording mode information indicating a temporal position during writing, or a combination thereof. 36. The program according to claim 35, wherein the receiving of the user operation in the receiving step is performed by receiving operation information indicating the user operation from a display device via the digital interface. 35. The program according to claim 34, wherein, in the output step, the status 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,
44. The program according to claim 43, 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 means that the transport stream is separated into a data carousel and an intermediate transport stream, and a new data carousel is generated from data broadcast content and state information included in the separated data carousel. Is to do
The program according to claim 44, wherein the incorporation by the output step includes multiplexing of the new data carousel and an 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 obtaining step in the obtaining step. program. The incorporation by the output step is characterized in that the data broadcast content is removed from the data broadcast content and the intermediate transport stream constituting the transport stream, and the state information is multiplexed with the intermediate transport stream. The program according to claim 43, wherein The transport stream includes a plurality of null packets having no information to be transmitted,
44. The program according to claim 43, wherein the embedding in the output step is to replace the null packet with the status information. The program further comprises:
44. The program according to claim 43, further comprising a writing step of recording the transport stream incorporating the state information on the recording medium.

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