WO2009157163A1 - 再生装置、再生装置の制御方法 - Google Patents
再生装置、再生装置の制御方法 Download PDFInfo
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- WO2009157163A1 WO2009157163A1 PCT/JP2009/002801 JP2009002801W WO2009157163A1 WO 2009157163 A1 WO2009157163 A1 WO 2009157163A1 JP 2009002801 W JP2009002801 W JP 2009002801W WO 2009157163 A1 WO2009157163 A1 WO 2009157163A1
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- java application
- application data
- read
- recording medium
- application
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/213—Read-only discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2541—Blu-ray discs; Blue laser DVR discs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/85—Television signal recording using optical recording on discs or drums
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/806—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components with processing of the sound signal
- H04N9/8063—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components with processing of the sound signal using time division multiplex of the PCM audio and PCM video signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
- H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal
Definitions
- the present invention relates to a playback technique for a recording medium in which a digital stream and an application program are recorded, and more particularly to a technique for inheriting a playback result of a recording medium among a plurality of devices.
- Java registered trademark
- the Java application executed at the time of content reproduction can not only control the reproduction of video and audio, but can also store arbitrary data (hereinafter referred to as application data) in the local storage in the reproducing apparatus.
- the application data stored in this way is retained in the local storage even after the playback of the BD-ROM is completed and the disc is taken out, or even after the device is turned off. Therefore, even if the device is turned off once, the next time the content is played, the Java application to be executed reads and uses the application data stored in the local storage in addition to the data on the disk. Execution results can be inherited.
- Patent Document 1 A technique for sharing a plurality of devices.
- the present invention has been made in view of such a problem, and an object of the present invention is to provide a playback apparatus that can inherit the execution result of an application program among a plurality of devices in playback of a recording medium on which a digital stream and an application program are recorded.
- a playback device plays back a digital stream recorded on a read-only recording medium and executes an application, which uses an identifier of the read-only recording medium.
- a built-in recording medium having a recording area that is specified and allowed to be read and written by the application, and an external output that outputs information recorded by execution of the application to the outside of the apparatus in the recording area that is allowed to be read and written by the application Means.
- a playback apparatus plays back a digital stream recorded on a read-only recording medium and executes an application, the read-only recording medium having An internal recording medium having a recording area specified by an identifier and permitted to be read and written by the application, and information that can be used when the application is executed is obtained from outside the playback device, and the recording that is permitted to be read and written by the application
- An external input means for recording the acquired information in the area may be provided.
- the playback apparatus includes an output unit that outputs information recorded by execution of an application to the outside of the playback apparatus, so that changes accompanying playback of the read-only recording medium are output to the outside. It becomes possible.
- the application data stored in the device can be used by other devices. Therefore, in the reproduction of the recording medium in which the digital stream and the application program are recorded, the execution result of the application program is obtained between a plurality of devices. Can be inherited.
- regenerating apparatus in Embodiment 1 of this invention Diagram showing the structure of the BD-ROM
- regeneration control in Embodiment 1 of this invention The figure which shows the movie work produced by the dynamic reproduction control of two modes in Embodiment 1 of this invention
- regenerating apparatus 102 Diagram showing a mechanism for sharing application data between playback devices
- FIG 10 is a diagram illustrating an example of the contents of the data take-out medium 606 according to the first embodiment
- Flow chart showing application data output processing procedure Flow chart showing application data input processing procedure
- the figure which shows an example of the content of the data taking-out medium 606 in Embodiment 2 Flowchart showing the procedure of application data output processing in the second embodiment
- FIG. 1 is a diagram showing a form of usage of the playback apparatus according to the present invention.
- the playback device 102 is used by the user together with the BD-ROM 101, the playback device 102, the television 103, and the removable media 104.
- the BD-ROM 101 is a recording medium on which movie works are recorded.
- the playback device 102 constructs a home theater system together with the television 103, and plays back the BD-ROM 100. Further, the playback device 102 includes an insertion slot for inserting a removable medium 104 such as an SD memory card, a memory stick, a compact flash (registered trademark), a smart media, a multimedia card, and a removable hard disk drive.
- a removable medium 104 such as an SD memory card, a memory stick, a compact flash (registered trademark), a smart media, a multimedia card, and a removable hard disk drive.
- the television 103 provides an interactive operation environment to the user by displaying a playback image of a movie work or displaying a menu or the like.
- the remote controller 105 is an accessory of the playback device 102, receives an operation on the playback device 102 from the user, and transmits an instruction signal corresponding to the operation to the playback device 102.
- the BD-ROM 101 which is an optical recording medium, is reproduced by the reproducing apparatus according to the present invention.
- FIG. 2 is a diagram showing a configuration of a BD-ROM (hereinafter sometimes referred to as “BD”).
- BD-ROM a BD-ROM
- the BD-ROM will be described focusing on AV applications for reproducing AV contents such as movies.
- the BD-ROM is used as a recording medium for computers such as a CD-ROM and a DVD-ROM. Of course, it can be used.
- the BD-ROM has a recording area spiraling from the inner periphery to the outer periphery like other optical disks such as DVD and CD, and logical data between the inner lead-in and outer lead-out. Can be recorded.
- BCA Burst Cutting Area
- application data such as video data is recorded starting with file system information (volume).
- volume file system information
- the file system is UDF, ISO9660, or the like, and logical data recorded in the same way as a normal PC can be read out using a directory and file structure.
- a file name of 255 characters The directory name can be read out.
- the directory and file structure on the BD disc is such that the BDMV directory is placed directly under the root directory (ROOT).
- the BDMV directory is a directory in which data such as AV contents and management information handled by the BD-ROM are recorded.
- the BDMV directory includes an index. bdmv, MovieObject. Two types of bdmv files are arranged.
- the STREAM directory is a directory that stores a file serving as a digital stream main body, and a file with an extension M2TS (xxx.m2ts [“xxx” is variable, and extension “m2ts” is fixed]).
- Exists In the PLAYLIST directory, there is a file with an extension mpls (xxx.mpls [“xxx” is variable, and extension “mpls” is fixed]).
- extension clpi xxx.clpi [“xxx” is variable, and extension “clpi” is fixed]).
- a file with the extension “m2ts” is an MPEG-TS (TransportStream) format digital AV stream, and multiplexes one or more video streams, one or more audio streams, and one or more sub-picture streams. It is obtained by doing.
- the video stream indicates the moving image portion of the movie
- the audio stream indicates the audio portion of the movie
- the sub-picture stream indicates the subtitle of the movie.
- a file with the extension “clpi” is Clip information corresponding one-to-one with each digital AV stream. Because of the management information, the Clip information has information such as the encoding format of the digital AV stream, the frame rate, the bit rate, and the resolution, and EP_map indicating the start position of the GOP.
- the file with the extension “mpls” is a file that stores PlayList information, and records the playback section of the stream (“In Time / Out Time”).
- the file with the extension “jar” is a Java archive file, which describes a Java application program that performs dynamic scenario control using a Java virtual machine. This file is required when it is desired to control the playback of each title indicating the playback unit of content on the BD-ROM from the Java application.
- a file with the extension “bdjo” is a file storing a BD-J object.
- the BD-J object is information that defines a title by associating an AV stream indicated by PlayList information with an application.
- the BD-object indicates an “application management table” and a PlayList list that can be played back in the title.
- the application management table is a table showing an application having this title as a life cycle by listing an application identifier (application ID) and an ID of a Java archive file belonging to the application. That is, one application is composed of one or more JavaJ archive files.
- Index. bdmv (file name is fixed as “index.bdmv”) is management information related to the entire BD-ROM, each of an organization ID (32 bits) that is an identifier for identifying a movie work provider, and a BD-ROM provided by the provider. Information such as discID (128 bits), which is an identifier assigned to the disc. By reading bdmv first, the playback device recognizes the disc uniquely. In addition, index. The bdmv includes a table indicating a plurality of titles that can be reproduced on the BD-ROM and BD-J objects that define individual titles in association with each other.
- the bdmv (file name fixed) includes a scenario program in which a scenario for dynamically changing the playback progress in each title playback in the HDMV mode (described later) is included.
- FIG. 3 is a diagram showing a layer model for playback control.
- the first layer in FIG. 3 is a physical layer, and is supply control of the stream body to be processed.
- the stream to be processed is not only a BD-ROM but also any recording such as a local storage, a removable medium, or a network that is a recording medium incorporated in a playback device such as an HDD (hard disk drive).
- Media and communication media are the supply sources.
- the control of the supply sources such as local storage, removable media, and network (disk access, card access, network communication) is the first layer control.
- the second layer is an AV data layer. It is this second layer that defines what decoding method is used to decode the stream supplied in the first layer.
- the third layer (BD management data) is a layer that defines a static scenario of a stream.
- the static scenario is reproduction path information and stream management information defined in advance by the disc producer, and it is this third layer that defines reproduction control based on these.
- the fourth layer is a layer that realizes a dynamic scenario in the stream.
- the dynamic scenario is a program that executes at least one of an AV stream playback procedure and a control procedure related to the playback.
- the reproduction control based on the dynamic scenario changes according to a user operation on the apparatus, and has a program-like property.
- One of the two modes is a mode for reproducing moving image data recorded on a BD-ROM (HDMV mode) in a reproduction environment unique to the AV device, and the other is a moving image data recorded on the BD-ROM.
- This is a mode (BD-J mode) for increasing the added value of the.
- the fourth layer describes two modes, an HDMV mode and a BD-J mode.
- the HDMV mode is a playback mode in a DVD-like playback environment, and a scenario program in which a scenario for dynamically changing playback progress is operated.
- Another BD-J mode is a playback mode mainly using a Java virtual machine, and performs playback control from a Java application.
- FIG. 4 is a diagram showing a movie work created by dynamic playback control in two modes.
- FIG. 4A is a diagram showing one scene of a movie work created by defining dynamic playback control in the HDMV mode.
- the playback control can be described by a command similar to a command that can be interpreted by the DVD playback device. Therefore, playback control similar to that of the DVD, that is, playback control in which playback proceeds by selecting a menu is performed. Can be defined.
- Fig. 4 (b) shows a movie work created by defining dynamic playback control in the BD-J mode.
- the control procedure can be described in the Java language that can be interpreted by the Java virtual machine. If this playback control controls the operation of computer graphics (CG), in BD-J mode, the CG animation (character A in the figure) moves beside the screen displaying the video. Playback control can be defined. This completes the description of the BD-ROM 101.
- FIG. 5 is a block diagram showing a rough functional configuration of the playback apparatus.
- the playback apparatus includes a BD-ROM drive 1, a track buffer 2, a demultiplexer 3, a video decoder 4, a video plane 5, an audio decoder 6, an image memory 7, an image decoder 8, an image plane 9, and an addition.
- this figure also shows a removable medium 104 attached to the playback apparatus 102.
- the BD-ROM drive 1 loads / ejects the BD-ROM and accesses the BD-ROM.
- the BD-ROM drive 1 may be one that can use various types of recording media such as a DVD and a CD, as well as a BD-RE that can be read and written, as well as a BD-ROM.
- the track buffer 2 is a FIFO memory, and the ACCESS UNIT read from the BD-ROM is stored in a first-in first-out manner.
- the demultiplexer 3 demultiplexes the BD-ROM loaded in the BD-ROM drive 1, or the transport stream stored on the local storage 24 and the removable medium 104, and forms a video frame constituting a GOP;
- the audio frame is obtained and the video frame is output to the video decoder 4, and the audio frame is output to the audio decoder 6.
- the sub-picture stream is stored in the image memory 7, and the navigation button information is stored in the dynamic scenario memory 12.
- Demultiplexing by the demultiplexer 3 includes a conversion process of converting TS packets into PES packets.
- the video decoder 4 decodes the video frame output from the demultiplexer 3 and writes a non-compressed picture in the video plane 5.
- the video plane 5 is a memory for storing uncompressed pictures.
- the audio decoder 6 decodes the audio frame output from the demultiplexer 3 and outputs uncompressed audio data.
- the image memory 7 is read from the sub-picture stream read from the demultiplexer 3, PNG data in Navigation Button information, or read from the BD-ROM or removable media 104 and the local storage 24 via the virtual file system 25.
- This buffer stores image files.
- the image plane 9 is a memory having an area for one screen, and a developed sub-video stream, PNG data, and image file are arranged therein.
- the image decoder 8 develops the sub-picture stream, PNG data, and image file stored in the image memory 7 and writes them in the image plane 9. By decoding the sub-picture stream, various menus and sub-pictures appear on the screen.
- the adder 10 combines the uncompressed picture data stored in the video plane 5 with the image developed on the image plane 9 and outputs it.
- the adder 10 displays an image in the image plane 9. And the picture in the video plane 5 are output.
- the static scenario memory 11 is a memory for storing the current PL and current stream management information.
- the current PL is the one that is currently being processed among a plurality of PLs recorded on the BD-ROM, the local storage 24, or the removable medium 104.
- the current stream management information is information that is currently processed among a plurality of stream management information recorded on the BD-ROM, the local storage 24, and the removable medium 104.
- the dynamic scenario memory 12 is a memory that stores a current dynamic scenario and is used for processing by the HDMV module 14 and the BD-J module 15.
- the current dynamic scenario refers to a scenario that is currently the execution target among a plurality of scenarios recorded in the BD-ROM, the local storage 24, and the removable medium 104.
- the control unit 13 is a microcomputer system including a ROM, a RAM, and a CPU.
- a program for controlling the playback device is recorded in the ROM, and the program in the ROM is read into the CPU, and the program and hardware resources cooperate.
- the functions of the HDMV module 14, the BD-J module 15, the mode management module 16, the dispatcher 17, the AV playback library 18, and the application data input / output control unit 20 are realized.
- the HDMV module 14 is a DVD virtual player that is the execution subject of the HDMV mode, and executes the current scenario program read into the dynamic scenario memory 12.
- the BD-J module 15 is a Java platform, and includes a Java virtual machine, a configuration, and a profile.
- the BD-J module 15 generates a current Java object from the Java class file read out to the dynamic scenario memory 12 and executes it.
- the Java virtual machine converts a Java object described in the Java language into a CPU native code in the playback apparatus, and causes the CPU to execute the Java object.
- the UO detection module 21 detects a user operation performed on the remote control or the front panel of the playback device, and outputs information indicating the user operation (hereinafter referred to as UO (User Operation)) to the mode management module 16.
- UO User Operation
- the mode management module 16 holds a mode management table read from the BD-ROM or the local storage 24 and the removable medium 104, and performs mode management and branch control.
- the mode management by the mode management module 16 is module assignment of which HDMV module 14 and BD-J module 15 execute a dynamic scenario.
- the dispatcher 17 selects only the UO appropriate for the mode in the current playback device from the UO, and transfers it to the module that executes the mode. For example, when the UMV such as up / down / left / right and activate is accepted during execution of the HDMV mode, the dispatcher 17 processes to output these UOs to the HDMV mode module.
- the rendering engine 22 includes basic software such as Java2D and OPEN-GL, and draws computer graphics in accordance with instructions from the BD-J module 15, and draws the drawn computer graphics on the image plane 9. Output.
- the AV playback library 18 executes an AV playback function and a playlist playback function in response to function calls from the HDMV module 14 and the BD-J module 15.
- the AV playback function is a group of functions followed from a DVD player and a CD player. Playback start, playback stop, pause, release of pause, release of still image function, fast-forward with specified playback speed, playback speed Is a process such as rewind, audio switching, sub-video switching, angle switching, etc., designated as an immediate value.
- the playlist playback function refers to performing playback start and playback stop according to playlist information in the AV playback function.
- the AV playback library 18 has a register 19.
- the register 19 is an area in which a play list reproduction state and arbitrary information used by contents can be stored.
- the playback state of a playlist indicates a state such as which AV data is used in various AV data information described in the playlist and which position (time) of the playlist is being played back. Is.
- the AV playback library 18 stores the contents in the register 19. Further, it is possible to store a value designated by the content or to pass the stored value to the content according to an instruction from the content executed by the HDMV module 14 or the BD-J module 15.
- the application data input / output control unit 20 performs application data external output processing for copying application data stored in the local storage 24 to the removable medium 104 and application data stored in the removable medium 104 attached to the playback device 102.
- the application data external input processing for fetching the data into the local storage 24 is controlled.
- the network interface 23 is for communicating with the outside of the playback device.
- the playback device 102 accesses a server accessible via the Internet via the network interface 23, accesses a server connected via a local network, or another playback device or peripheral device connected directly or indirectly. It is possible to communicate with. Further, it is possible to monitor the connection state from the outside to the network interface 23, and it is possible to notify that the connection state has changed according to the change in the connection state.
- the network interface 23 can be realized by Ethernet (registered trademark) (IEEE 802.3), IEEE 1394, USB (Universal Serial Bus), HDMI (High-Definition Multimedia Interface), PLC (Power Line), etc. It is possible to use a known technique.
- Ethernet registered trademark
- IEEE 1394 Universal Serial Bus
- HDMI High-Definition Multimedia Interface
- PLC Power Line
- the BD-ROM additional content is content that does not exist in the original BD-ROM, and includes, for example, additional sub audio, subtitles, privilege video, and applications.
- the network interface 23 can be controlled from the BD-J module 15, and additional content published on the Internet can be downloaded to the local storage 24 or the removable medium 104. Further, for example, communication with a hard disk drive connected via the network interface 23, that is, reading and writing of data is possible.
- the local storage 24 and the removable medium 104 are used for storing downloaded additional content and data used by the application.
- the additional content storage area is divided for each BD-ROM, and the area that can be used by the application to hold data is divided for each application.
- merge management information describing how to merge the downloaded additional content with the data on the BD-ROM and the merge rule is also stored in the local storage 24 and the removable medium 104.
- the virtual file system 25 merges the additional content stored in the local storage 24 or the removable medium 104 and the content on the BD-ROM based on the merge management information downloaded to the local storage 24 and the removable medium 104 together with the additional content.
- a virtual BD-ROM virtual package
- the playback device performs playback control using both the data on the BD-ROM and the data on the local storage 24 or the removable medium 104.
- the non-volatile memory 26 is a readable / writable recording medium, and is a medium capable of holding recorded contents even when power is not supplied.
- a medium capable of holding recorded contents even when power is not supplied For example, flash memory, FeRAM and the like.
- the present invention can also be implemented by using the removable medium 104, the local storage 24, and a recording medium writable by the BD drive 1 as the nonvolatile memory 26. Further, even if the medium is accessible via the network interface 23, it can be used as the non-volatile memory 26 as long as the recorded content can be held without depending on the power supply state of the playback device. .
- the functional configuration shown here is an example of a playback device for a BD-ROM, and the present invention can be implemented with other functional configurations as long as the operations described below can be realized. is there.
- the application data input / output control unit 20 is introduced as a mechanism for sharing content data stored in a device between playback devices. Details thereof will be described with reference to FIG. Note that the same components as those in FIG. 5 are denoted by the same reference numerals and description thereof is omitted.
- the Java application 601 executed by the BD-J module 15 reads / writes data from / to the Java application data storage unit 602 via the BD-J module 15.
- Java application data is a general term for data that the Java application 601 reads from and writes to the application data storage unit 602 via the BD-J module 15. For example, the value of internal variables used during the execution of the Java application 601 and history information when some control is performed by an operation from the user. Further, in the case of the Java application 601 for attaching a bookmark to a certain reproduction position according to an instruction from the user, the bookmark position instructed by the user is handled as Java application data.
- the Java application data storage unit 602 is a recording area where data can be read and written from the Java application 601 through the BD-J module 15. Specifically, a local storage 24, a removable medium 104, a disk inserted in the BD drive 1, and the like. Furthermore, it is also possible to use a recording area of an external recording device that can be accessed via the network interface 23 as the Java application data storage unit 602. For example, the Java application 601 can transmit data to be written to a server connected to the Internet, and the server can store the received data in some recording medium such as a hard disk drive. Conversely, the Java application 601 can receive data to be read from a server connected to the Internet.
- the Java application data storage unit 602 need not be a single physical recording medium, and may be a complex of a plurality of physical or logical recording areas. For example, a part of the local storage 24 and the removable medium 104 may be included. In the present embodiment, the recording area of the local storage 24 is used as the Java application data storage unit 602.
- the recording area of the local storage 24 includes an ADA directory 31 and a BUDA directory 32 as shown in FIG.
- FIG. 8 shows an example of the ADA directory 31 which is a part of the Java application data storage unit 602 in the present embodiment.
- the ADA directory 31 is a recording area in which reading / writing of data by a Java application whose validity is authenticated at the time of execution is permitted.
- Under the ADA directory as shown in FIG. 8, there is a subdirectory using the Organization ID as a name, and under that, there is a subdirectory using the Application ID as a name.
- OrganizationID is a 32-bit identifier that identifies the organization that created the application, and is described in the BD-J object on the BD-ROM.
- ApplicationID also identifies the application that is described in the BD-J object. It is a 16-bit identifier.
- each Java application is permitted to read and write application data only under the directory named “OrganizationID” and “ApplicationID”. Such access restriction is controlled by the BD-J module 15.
- the ADA directory 31 includes “data1.dat”, “data2.data”, “data3.data”, and “data4.data” which are data saved by the Java application.
- “Data1.dat” and “data2.dat” are data stored by a Java application having identification information “OrganizationID-1” and “ApplicationID-1”, and “data3.data” is “OrganizationID-1”.
- data stored by a Java application having identification information “ApplicationID-2”, and “data4.dat” is data stored by a Java application having identification information “OrganizationID-2” and “ApplicationID-3” is there.
- “OrganizationID-1”, “OrganizationID-2”, “ApplicationID-1”, “ApplicationID-2”, and “ApplicationID-3” are a set of identifiers for identifying Java applications. Even if it is determined by the selection method, the present invention can be implemented.
- FIG. 9 shows an example of the BUDA directory 32 which is a part of the Java application data storage unit 602 in the present embodiment.
- the BUDA directory 32 is a recording area in which additional content used for generating a virtual package by the virtual file system 25 and data by the Java application are stored. In the figure, only application data recorded in BUDA is shown. Under the BUDA directory in the present embodiment, as shown in the figure, there is a subdirectory using CertID as a name, and under that, there is a subdirectory using OganizationID as a name, and further under that subdirectory. There is a subdirectory using DiscID as the name.
- CertID is an identifier derived from the disc root certificate (app.discroot.cert) on the BD-ROM, and the SHA-1 digest value of the disc root certificate is used.
- each Java application writes and reads application data under the directory named “CertID”, “OrganizationID”, and “DiscID” of each BD-ROM disc, thereby reading into the BUDA area. It becomes possible to easily grasp to which Java application each recorded application data relates.
- the BUDA directory 32 has data “data5.dat”, “data6.data”, “data7.data”, “data8.data”, and “data9.data” stored by the Java application. "It is included. “Data5.dat” and “data6.dat” are data used in content having identification information “CertID-1”, “OrganizationID-3” and “DiscID-1”, and “data7.data” is “CertID” -1 ”,“ OrganizationID-3 ”, and“ DiscID-2 ”, which are used by contents having identification information,“ data8.dat ”is“ CertID-1 ”,“ OrganizationID-4 ”, and“ DiscID-3 ” “Data9.dat” is data used for content having identification information “CertID-2”, “OrganizationID-5”, and “DiscID-4”.
- “CertID-1”, “CertID-2”, “OrganizationID-3”, “OrganizationID-4”, “OrganizationID-5”, “DiscID-1”, “DiscID-2”, “DiscID-3” and “DiscID-4” is a set of identifiers for identifying content, and the present invention can be implemented by any selection method.
- the Java application data storage unit 602 can take various forms of file configurations, but the present invention can be implemented regardless of the form. It is.
- Java application data storage unit 602 transmits the Java application data stored in the Java application data storage unit 602 to the Java application data writing unit 604.
- the Java application data management unit 603 in FIG. Java application data is acquired from the Java application data reading unit 605 and written into the Java application data storage unit 602.
- the Java application data writing unit 604 saves the Java application data transmitted from the Java application data management unit 603 in the data take-out medium 606.
- the Java application data reading unit 605 reads the Java application data instructed from the Java application data management unit 603 from the data take-out medium 606, and sends the Java application data to the Java application data management unit 603.
- the Java application data management unit 603 acquires Java application data from the Java application data reading unit 605. However, it is not necessary to acquire all of the Java application data read by the Java application data reading unit 605, and partially. It is also possible to acquire or only management information of Java application data.
- the management information of the Java application data includes the names, sizes, update dates and the like of files and directories constituting the Java application data. In the present invention, management information of Java application data is also handled as part of Java application data.
- Data take-out medium 606 is a recording medium that can record Java application data.
- the removable medium 104 is used as the data take-out medium 606.
- the output start command unit 607 sends a Java application data output command to the Java application data management unit 603.
- the Java application data output command is output in response to detection of a UO indicating that the “output button” provided on the playback device 102 or the remote controller 105 has been pressed.
- the input start command unit 608 sends a Java application data input command to the Java application data management unit 603.
- the Java application data input command is output in response to detection of a UO indicating that the “input button” provided on the playback device 102 or the remote controller 105 has been pressed.
- the Java application data management unit 603 When receiving the Java application data output command from the output start command unit 607, the Java application data management unit 603 reads a part or all of the Java application data stored in the Java application data storage unit 602, and the Java application data writing unit. The read Java application data is sent to 604.
- FIG. 11 is a screen example when inquiring of the user which Java application data corresponding to which content is to be output to the data take-out medium 606.
- a selection screen 701 is displayed on the television 103 to prompt the user to select using the remote controller 105 or the like.
- Such a function can be realized by including information for identifying the content in the Java application data storage unit 602 as shown in FIG. 9, for example.
- the Java application data management unit 603 displays the Java application data used by the Java application corresponding to the selected content name as a Java application data storage unit. Read from 602 and send to Java application data writing unit 604. One or more contents may be selected. If the user decides to interrupt the process, the process can be interrupted by selecting “Cancel”. In this example, the selection method in units of contents is shown, but selection methods in other classifications are also possible. It is also possible to select the Java application data related to the content that was last played back by default, or to insert the BD-ROM disc on which the content to be selected is recorded into the playback device 102 so that the user can select it. is there.
- the Java application data management unit 603 can read only the Java application data corresponding to the content reproduced last and send it to the Java application data writing unit 604.
- the Java application data writing unit 604 Upon receiving the Java application data sent from the Java application data management unit 603, the Java application data writing unit 604 stores the Java application data in the data take-out medium 606.
- the processing may be interrupted there.
- the user may be notified that the process has been interrupted. Further, the user may be requested to insert the media so that the data take-out medium 606 can be used.
- FIG. 12 is a display example of the television 103 when the user is requested to make the data take-out medium 606 available.
- a message 801 is displayed to the user to prompt the user to insert a medium as the data take-out medium 606.
- the Java application data writing unit 604 can save the data in the data takeout medium 606.
- FIG. 10 schematically shows an example of the file configuration in a state where the application data read from the Java application data storage unit 602 is stored in the data take-out medium 606.
- the data take-out medium 606 stores a file group 43 and the file group 44 as Java application data.
- Each of these file groups is a file group 41 which is a set of data stored by the Java application having identification information “OrganizationID-1” and “ApplicationID-1” among the data held in the ADA shown in FIG.
- the file group 42 which is a set of data used for content having identification information “CertID-1”, “OrganizationID-3”, and “DiscID-1” is duplicated. It has been done.
- the application data external output process is started when the Java application data management unit 603 receives a Java application data output command from the output start command unit 607 (step S1: Yes).
- the Java application data management unit 603 Upon receiving the output command, the Java application data management unit 603 first instructs the rendering engine 22 to draw the inquiry screen as the take-out object shown in FIG. 11, and accepts selection of the take-out object by the user (step S2). Next, it is confirmed whether or not the removable medium 104 to be taken out is inserted. If not, the rendering engine 22 is instructed to draw the removable media insertion request screen shown in FIG. Wait (step S3).
- the Java application data management unit 603 reads application data corresponding to the identifier of the Java application to be taken out selected in step S2 from the ADA area and the BUDA area, and writes the data to the removable medium 104 to the Java application data writing unit 604. To command.
- the Java application data writing unit 604 writes the application data to the removable medium 104 with the directory structure in the ADA area and the BUDA area (steps S4 and S5).
- the above is the procedure of the application data external output process.
- the Java application data management unit 603 instructs the Java application data reading unit 605 to read the Java application data.
- the Java application data reading unit 605 When receiving a Java application data reading instruction from the Java application data management unit 603, the Java application data reading unit 605 reads the Java application data from the removable medium 104, which is the data take-out medium 606, and sends it to the Java application data management unit 603.
- the Java application data management unit 603 stores the Java application data in the Java application data storage unit 602.
- Java application data management unit 603 need not read all the Java application data stored in the data take-out medium 606 via the Java application data reading unit 605 and store it in the Java application data storage unit 602. It is also possible to store only a part of all Java application data stored in the take-out medium 606 in the Java application data storage unit 602.
- Java application data storage unit 602 For example, only the Java application data that will be used in the content to be reproduced from now on is stored in the Java application data storage unit 602, or only those that have a difference from the Java application data storage unit 602 are stored in the Java application data storage unit.
- the Java application data management unit 603 may be configured to store the data in the field 602. Further, when the data take-out medium 606 includes information for identifying the BD-ROM disc corresponding to the Java application data (hereinafter referred to as BD-ROM disc identification information), it is included in the data take-out medium 606.
- the BD-ROM disc identification information is compared with the BD-ROM disc identification information of the BD-ROM disc inserted in the BD-ROM drive 1 of the playback apparatus 102, and is included in the data take-out medium 606 only when they are the same.
- the Java application data to be stored may be stored in the Java application data storage unit 602. As a result, it is possible to impose restrictions that Java application data cannot be shared unless they are the same BD-ROM disc, and it is possible to prevent unintended use of Java application data.
- the Java application data included in the data take-out medium 606 is stored in the Java application data storage unit 602.
- the same Java application data can be shared among a plurality of users. The switching of these operations may be determined in advance at the time of saving to the data take-out medium 606 or at the time of reading, or may be made to be selected by the user as necessary.
- the BD-ROM disc identification information for example, information generated based on the BCA or information calculated from a part or all of the data included in the BD-ROM disc can be used. is there. Furthermore, it is possible to include password information set by the user and device-specific information held by the playback apparatus 102.
- the contents recorded in the data take-out medium 606 and the contents in the input / output path between the data take-out medium 606 and the playback device 102 are described in a format different from the data stored in the Java application data storage unit 602. May be.
- the content may be converted using a known encryption technique.
- the application data external input process is started when the Java application data management unit 603 receives a Java application data input command from the input start command unit 608 (step S11: Yes).
- the Java application data management unit 603 Upon receiving the input command, the Java application data management unit 603 The Java application data reading unit 605 is instructed to read the application data recorded on the removable medium that is the data take-out medium 606, and the read application data is stored in the ADA area of the local storage 24 that constitutes the Java application data storage unit 602. And recorded in the BUDA area (step S12, step S13). At this time, the Java application data management unit 603 records the read Java application data in the ADA area and the BUDA area with the directory structure in the removable medium. The above is the procedure of the application data external input process.
- Java application data in the data take-out medium 606 is not necessarily used in a different playback device. For example, it may be read by the original playback device that stores Java application data in the data take-out medium 606. If there is no change in the contents of the Java application data storage unit 602 included in the original playback device, the contents of the Java application data storage unit 602 and the data take-out medium 606 may be equivalent. However, when there is a change in the contents of the Java application data storage unit 602 included in the original playback device, the content of the data take-out medium 606 holds the contents of the Java application data storage unit 602 before the change. Therefore, the present invention can also be used as a backup of Java application data.
- the contents of the Java application data storage unit 602 can be partially or entirely the same in a plurality of different playback devices. For example, after a Java application included in content played back by a certain playback device stores some data (for example, a score of a game), this data is recorded in the local storage of another playback device via the data take-out medium 606. Therefore, when the same content is played back on this different playback device, the Java application included in the content can acquire the same data even though the playback device is different, and the playback state is continued. It becomes possible to do.
- a data take-out medium 606 shown in FIG. 6 is a recording medium capable of recording Java application data, and can be simultaneously or exclusively from two or more different playback devices. , Characterized by being available.
- a removable medium 104 that is a removable recording medium or a recording medium that can be used in the BD-ROM drive 1 can be used.
- the data take-out medium 606 only needs to be available from the Java application data writing unit 604 and the Java application data reading unit 605, and does not need to be physically connected to the playback device 102.
- the Java application data writing unit 604 and the Java application data reading unit 605 can use a server outside the playback device 102 via the network interface 23, the data take-out medium 606 is connected to the server. It may be a hard disk drive.
- the timing for sending the Java application data output command by the output start command unit 607 may be any timing.
- a Java application data output command may be sent by a user performing an operation according to a menu displayed on the television 103.
- a Java application data output command may be sent in response to the data take-out medium 606 being connected.
- a Java application data output command may be sent when the playback device 102 is stopped, when playback is stopped, or when media is ejected.
- a Java application data output command may be sent while the Java application is being executed, such as when the Java application data changes constantly during content playback.
- a Java application data output command may be sent at a timing combining the above examples.
- the output start command unit 607 may include whether or not the content is being reproduced in cooperation with the mode management module 16 in the condition for sending the Java application data output command.
- the timing for sending the Java application data output command is changed depending on whether or not the content of the Java application data storage unit 602 is the content written by the Java application data management unit 603. Also good. For example, when the content of the Java application data storage unit 602 is the content written by the Java application data management unit 603, a Java application data output command is always sent or an inquiry is made to the user when the content playback is stopped. In addition, a Java application data output command may be sent, or a Java application data output command may be sent frequently even during content playback.
- the timing for sending the Java application data input command by the input start command unit 608 may be any timing.
- the timing for sending the Java application data input command may be any timing.
- the arbitrary timing may be, for example, that a button is attached to the playback device 102 or the remote controller 105, and a Java application data input command may be sent by pressing the button.
- a Java application data input command may be sent by a user performing an operation according to a menu displayed on the television 103.
- a Java application data input command may be sent in response to the data take-out medium 606 being connected.
- a Java application data input command may be sent when the playback device 102 is activated, when playback is started, or when a BD-ROM is inserted.
- a Java application data input command may be sent.
- a Java application data input command may be sent at a timing combining the above examples.
- the output start command unit 607 may include whether or not the content is being reproduced in cooperation with the mode management module 16 in the condition for sending the Java application data input command.
- the Java application data is a generic name for data that the Java application 601 illustrated in FIG. 6 reads / writes from / to the application data storage unit 602 via the BD-J module 15.
- the case where the contents of the register 19 shown in FIG. 5 are further included as Java application data will be described.
- Embodiment 1 since the component of the same number as Embodiment 1 is the same as Embodiment 1, description is abbreviate
- the contents of the register 19 can be read or written by the Java application 601 via the BD-J module 15. Therefore, also in the first embodiment, it is possible to include the contents of the register 19 as Java application data. However, in the present embodiment, even when the Java application 601 does not include the contents of the register 19 as Java application data, a case where the Java application data management unit 603 includes the contents of the register 19 as Java application data will be described.
- FIG. 15 is a diagram showing a mechanism for sharing Java application data between playback apparatuses in the second embodiment.
- the same components as those shown in FIGS. 5 and 6 are denoted by the same reference numerals and description thereof is omitted.
- the Java application data management unit 609 further transmits the Java application data stored in the Java application data storage unit 602 to the Java application data writing unit 604 and also to the register 19. The stored contents are transmitted to the Java application data writing unit 604.
- the Java application data storage unit 602 writes the Java application data. If the read Java application data includes contents to be written to the register 19, the register 19 stores the contents. Write data to it.
- any method may be used as the Java application data management unit 609 to determine whether or not the content should be written to the register 19. For example, when sending Java application data to the Java application data writing unit 604, whether each element included in the Java application data should be stored in the Java application data storage unit 602 or stored in the register 19 May be recorded on the data take-out medium 606 together with the Java application data, and the Java application data reading unit 605 may acquire the Java application data together with the added information. Similarly, data may be recorded on the data take-out medium 606 so as to have a data structure classified for each storage destination such as the Java application data storage unit 602 and the register 19.
- FIG. 16 schematically shows an example of the contents of the data take-out medium 606.
- the same components as those in FIG. 10 are denoted by the same reference numerals, and description thereof is omitted.
- the file structure stored in the data take-out medium 606 includes a file group 43, a file group 44, register information 45, and content information 46.
- the register information 45 shows an example when the contents of the register 19 are stored in the data take-out medium 606.
- the register information 45 is stored with the name “Register.dat” as an example.
- the content information 46 shows an example when a content identifier for identifying content corresponding to the contents of the register 19 is stored in the data take-out medium 606.
- a BD-ROM drive is shown.
- the identification information of the BD-ROM disc inserted in 1 is stored under the name “DiscInfo.dat”.
- the process shown in this figure is performed by adding the identification information of the BD-ROM disc inserted in the BD-ROM drive 1 to the disc info.
- the process of recording in the data take-out medium 606 as dat (step S22) and the contents of the register 19 are registered in Register.
- a process (step S25) of recording on the data take-out medium 606 as dat is added.
- the above is the procedure of the application data external output process in this embodiment.
- the process shown in FIG. 14 includes the identifier of the BD-ROM disc inserted in the BD-ROM drive 1, the DiscInfo.
- the process of collating the contents of dat step S32), the identifier of the disc inserted in step S32, and DiscInfo. If dat matches (step S32: Yes), Register.
- a process of returning the contents of dat to the register 19 step S33 is added.
- the above is the procedure of the application data external input process in this embodiment.
- the contents of the register 19 can be shared between different playback apparatuses.
- the resume process can be taken over between different playback apparatuses.
- the playback is continued from the position where playback was stopped even if the playback device is different. And playback becomes possible.
- the Java application data is temporarily stored in the data take-out medium 606 has been described.
- a plurality of playback devices are used without using the data take-out medium 606. A method for realizing sharing of Java application data between the two will be described.
- FIG. 19 is a diagram showing a form of usage of the playback device in the third embodiment.
- the playback device 102a installed in the house and the on-vehicle playback device 102b are connected via a network and can transmit and receive data to and from each other.
- FIG. 20 shows a configuration related to the application data inheritance of the playback device 102a and the in-vehicle playback device 102b.
- the playback device 102a and the playback device 102b are directly or indirectly connected via the network interface 23. Note that the playback device 102a and the playback device 102b do not need to be constantly connected, and the present invention can be implemented as long as they are connected only when the effects described in this embodiment are required.
- the Java application data writing unit 604 saves the Java application data transmitted from the Java application data management unit 603 in the data take-out medium 606.
- the writing unit 610 transmits the Java application data transmitted from the Java application data management unit 603 to another playback device via the network interface 23.
- the Java application data writing unit 604 and the Java application data writing unit 610 are the same except that the data is stored in the data take-out medium 606 and transmitted to another playback device.
- the Java application data reading unit 605 reads Java application data from the data take-out medium 606.
- the Java application data reading unit 611 in the present embodiment transmits the Java application data to the network.
- the content input from the outside of the playback device is read through the interface 23.
- the Java application data reading unit 605 and the Java application data reading unit 611 are the same except that the reading from the data take-out medium 606 and the content input from the outside of the playback apparatus are read.
- the output start command unit 607 is notified to the Java application data management unit 603. Instruct to send application data output command.
- the output start command unit 607 sends a Java application data output command to the Java application data management unit 603.
- the Java application data management unit 603 receives a Java application data output command from the output start command unit 607
- the Java application data management unit 603 sends a part of the Java application data stored in the Java application data storage unit 602 to the Java application data writing unit 610. Or all of them are read, and the read Java application data is sent to the Java application data writing unit 610.
- the Java application data writing unit 610 outputs the Java application data to the network interface 23.
- the operation of the playback device 102b will be described.
- the input start command unit 608 is notified to the Java application data management unit 603. Instruct to send application data input command.
- the input start command unit 608 sends a Java application data input command to the Java application data management unit 603.
- the Java application data management unit 603 issues a Java application data reading command to the Java application data reading unit 611.
- the Java application data reading unit 611 reads Java application data instructed from the Java application data management unit 603 from the network interface 23 and sends the Java application data to the Java application data management unit 603.
- the content read from the network interface 23 is output from the playback device 102a.
- the Java application data management unit 603 When receiving the Java application data from the Java application data reading unit 611, the Java application data management unit 603 writes it in the Java application data storage unit 602.
- a plurality of playback devices when a plurality of playback devices are connected, it can be determined by an arbitrary method which playback device sends Java application data to which playback device. For example, the user can select whether to transmit or receive, compare the contents of the Java application data storage unit 602 included in each playback device, transmit Java application data from a playback device having newer content, It is also possible for the playback device to receive it.
- the management information of the Java application data is not the Java application data itself contained in the Java application data storage unit 602, By transmitting and receiving only the file name, update date and time, file size, etc., it becomes possible to compare the contents without transmitting and receiving the Java application data itself.
- the Java application data management unit 603 issues a Java application data output command.
- the output start command unit 607 adds an arbitrary process after receiving an instruction from the network interface 23 and before sending a Java application data output command to the Java application data management unit 603. Is possible. For example, as shown in FIG. 21, a selection screen 1501 can be displayed on the television 103 to notify the user that Java application data is to be transmitted and to inquire whether transmission is possible.
- the input start command unit 608 sends a Java application data input command to the Java application data management unit 603 when receiving an instruction from the network interface 23.
- a selection screen 1601 can be displayed on the television 103 to notify the user that reception of Java application data is started and to inquire whether reception is possible.
- the user refuses reception from the playback device 102a, it is also possible not to send a Java application data input command to the Java application data management unit 603.
- the selection screen 1601 information regarding the playback device 102a may be added.
- the Java application data management unit 603 receives the Java application data from the Java application data reading unit 611 and writes it to the Java application data storage unit 602.
- the Java application data storage unit 602 stores the Java application data in the Java application data storage unit 602.
- a selection screen 1701 may be displayed on the television 103, and information related to Java application data to be written may be presented to the user.
- the user selects whether or not writing is possible, and if not, writing is not performed.
- a list of Java application data to be written is presented, which Java application data can be selected, and only the selected Java application data can be written in the Java application data storage unit 602. Good.
- the Java application data stored in the Java application data storage unit 602 included in each of the playback device 102a and the playback device 102b is compared, so that Java. It is possible to share application data.
- the Java application data storage unit 602 included in the playback device 102a has the file configuration shown in FIG.
- the Java application data storage unit 602 included in the playback device 102b has the file configuration shown in FIG.
- the file structure shown in FIG. 24 is a part of the file structure shown in FIG. Specifically, as compared with the file structure shown in FIG. 8, the data shown in FIG. 24 includes data “data4.data” stored by a Java application having identification information “OrganizationID-2” and “ApplicationID-3”. dat "does not exist.
- each Java application data management unit 603 detects that there is no “data4.dat” that is data stored by the Java application having identification information “OrganizationID-2” and “ApplicationID-3”.
- the playback device 102a outputs “data4.dat” as Java application data
- the playback device 102b outputs “data4.data” output from the playback device 102a.
- dat is stored in the Java application data storage unit 602 as Java application data.
- the Java application data storage unit 602 included in the playback device 102b has the same contents as the Java application data storage unit 602 included in the playback device 102a.
- the Java application is “data4.data” that is data stored on the playback device 102a. "Can also be used in the playback apparatus 102b.
- Java application data can be shared between playback devices without using a data takeout medium.
- the present invention by using the function of outputting the entire contents of the Java application data storage unit 602 included in each of the plurality of playback devices 602 or a part thereof, and inputting them from outside the playback device.
- the present invention is not limited to the method described in the present invention, and other methods can be used.
- the contents of the Java application data storage unit 602 included in a certain playback device are mainly included in other playback devices using some means.
- the playback device uses this recording medium as a writing / reading destination of a Java application instead of the Java application data storage unit 602. It is characterized by using.
- the BD-J module 15 normally requests read / write processing of data stored in the Java application data storage unit 602 when a Java application data read / write request is issued from the executing Java application. However, in the state where the data take-out medium 606 is connected, the request is executed as a process of reading and writing data stored in the data take-out medium 606.
- the BD-J module 15 has issued a request for reading Java application data from the Java application being executed.
- the input start command unit 608 is requested to input the contents of the file designated by the Java application, and the Java application data received by the Java application data management unit 603 is returned to the requesting Java application.
- the contents of the Java application data storage unit 602 existing in other playback devices can be passed to the Java application being executed.
- the BD-J module 15 requests the output start command unit 607 to output the contents of the file specified by the Java application when a Java application data write request is issued from the executing Java application.
- the contents instructed by the Java application being executed to the Java application data storage unit 602 existing in the other playback device by passing the contents of the request / return requested from the Java application to the Java application data management unit 603. Can be stored.
- the external recording device 107 connected via the network can be used as the Java application data storage unit 602 or the data take-out medium 606.
- any method may be used for determining whether to use the connected data take-out medium 606 as the Java application data storage unit 602. For example, when the data take-out medium 606 is connected, the user may be asked whether to use it. Alternatively, if the uniqueness of the data take-out medium 606 can be confirmed by a known technique, in the case of the data take-out medium 606 permitted in advance, it is possible to connect without confirming whether to use the data for the user. The data take-out medium 606 thus obtained may be used as the Java application data storage unit 602.
- Java application data can be shared without copying the Java application data to another playback device.
- the present invention may be a playback apparatus control method disclosed by the processing procedure of the flowchart described in each embodiment. Further, it may be a computer program including a program code that causes a computer to operate according to the processing procedure, or may be a digital signal composed of the computer program.
- the present invention also provides a computer-readable recording medium such as a flexible disk, hard disk, CD-ROM, MO, DVD, DVD-ROM, DVD-RAM, BD (Blu-ray Disc). ), Recorded in a semiconductor memory or the like.
- a computer-readable recording medium such as a flexible disk, hard disk, CD-ROM, MO, DVD, DVD-ROM, DVD-RAM, BD (Blu-ray Disc).
- 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 can also be implemented as an LSI that controls the playback device described in each of the above embodiments.
- Such an LSI can be realized by integrating functional blocks realized by the control unit 13 shown in FIG. These functional blocks may be individually made into one chip, or may be made into one chip so as to include a part or all of them.
- LSI is used, but it may be called IC, system LSI, super LSI, or ultra LSI depending on the degree of integration.
- the method of circuit integration is not limited to LSI, and implementation with a dedicated circuit or a general-purpose processor is also possible.
- An FPGA Field Programmable Gate Array
- a reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.
- the playback device constituting the present invention can be manufactured and sold in the manufacturing industry in a management manner, and continuously and repeatedly. In particular, it can be used in the movie industry and consumer equipment industry that are involved in the production of video content.
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Abstract
Description
まず始めに、本発明に係る再生装置の実施行為のうち、使用行為についての形態を説明する。図1は、本発明に係る再生装置の、使用行為についての形態を示す図である。本図に示すように、再生装置102は、BD-ROM101、再生装置102、テレビ103、リムーバブルメディア104と共にユーザによる使用に供される。
データ持ち出し媒体606であるリムーバブルメディアに記録されているアプリケーションデータの読み込みを、Javaアプリケーションデータ読み込み部605に命じ、読み込まれたアプリケーションデータを、Javaアプリケーションデータ格納部602を構成するローカルストレージ24のADA領域及びBUDA領域に記録する(ステップS12、ステップS13)。この時Javaアプリケーションデータ管理部603は、読み込まれたJavaアプリケーションデータをリムーバブルメディア内でのディレクトリ構成のまま、ADA領域及びBUDA領域へ記録する。以上がアプリケーションデータ外部入力処理の手順である。
(実施の形態2)
実施の形態1では、Javaアプリケーションデータとは、図6に記載のJavaアプリケーション601がBD-Jモジュール15を介してアプリケーションデータ格納部602に対して読み書きするデータの総称であるとした。本実施の形態においては、さらに、Javaアプリケーションデータとして、図5に記載のレジスタ19の内容を含める場合について述べる。
(実施の形態3)
実施の形態1および実施の形態2では、Javaアプリケーションデータを、一旦、データ持ち出し媒体606に保存する場合について述べたが、本実施の形態においては、データ持ち出し媒体606を介さず、複数の再生装置間でJavaアプリケーションデータの共有を実現する方法について述べる。
この状態において再生装置102aと再生装置102bを接続した場合、
上述のように”OrganizationID-2”と”ApplicationID-3”という識別情報を持つJavaアプリケーションが保存したデータである”data4.dat”が存在しないことが、それぞれのJavaアプリケーションデータ管理部603によって検知される。そうすると、それぞれのJavaアプリケーションデータ格納部602の内容を同期させるために、再生装置102aはJavaアプリケーションデータとして”data4.dat”を出力し、再生装置102bは、再生装置102aから出力された”data4.dat”をJavaアプリケーションデータとしてJavaアプリケーションデータ格納部602へ格納する。その結果、再生装置102bに含まれるJavaアプリケーションデータ格納部602は、再生装置102aに含まれるJavaアプリケーションデータ格納部602と同等の内容になる。これにより、再生装置102aにおいて再生され、”data4.dat”を保存したJavaアプリケーションが含まれるコンテンツを、再生装置102bで再生すると、Javaアプリケーションは、再生装置102aにおいて保存したデータである”data4.dat”を、再生装置102bにおいても利用可能となる。
(実施の形態4)
実施の形態1、実施の形態2、および実施の形態3においては、主に、何らかの手段を用いて、ある再生装置に含まれるJavaアプリケーションデータ格納部602の内容を、他の再生装置に含まれるJavaアプリケーションデータ格納部602へ複製する場合について述べたが、本実施の形態においては、他の再生装置に含まれるJavaアプリケーションデータ格納部602へ複製することなく、Javaアプリケーションデータを共有する機構について述べる。
(その他の変形例)
尚、本発明を上記の実施形態に基づいて説明してきたが、本発明は、上記の実施形態に限定されないのはもちろんである。以下のような場合も本発明に含まれる。
2 トラックバッファ
3 デマルチプレクサ
4 ビデオデコーダ
5 ビデオプレーン
6 オーディオデコーダ
7 イメージメモリ
8 イメージデコーダ
9 イメージプレーン
10 加算器
11 静的シナリオメモリ
12 動的シナリオメモリ
13 制御部
14 HDMVモジュール
15 BD-Jモジュール
16 モード管理モジュール
17 ディスパッチャ
18 AV再生ライブラリ
19 レジスタ
20 アプリケーションデータ入出力制御部
21 UO探知モジュール
22 レンダリングエンジン
23 ネットワークインターフェース
24 ローカルストレージ
25 仮想ファイルシステム
26 不揮発性メモリ
31 ADAディレクトリ
32 BUDAディレクトリ
41 ファイル群
42 ファイル群
43 ファイル群
44 ファイル群
45 レジスタ情報
46 コンテンツ情報
101 BD-ROM
102 再生装置
102a 再生装置
102b 再生装置
103 テレビ
104 リムーバブルメディア
105 リモコン
107 外部記録装置
601 アプリケーション
602 アプリケーションデータ格納部
603 アプリケーションデータ管理部
604 Javaアプリケーションデータ書き込み部
605 Javaアプリケーションデータ読み込み部
606 データ持ち出し媒体
607 出力開始命令部
608 入力開始命令部
609 アプリケーションデータ管理部
610 Javaアプリケーションデータ書き込み部
611 Javaアプリケーションデータ読み込み部
701 選択画面
801 メッセージ
1501 選択画面
1601 選択画面
1701 選択画面
Claims (14)
- 読み出し専用記録媒体に記録されたデジタルストリームを再生すると共に、アプリケーションを実行する再生装置であって、
前記読み出し専用記録媒体が有する識別子により特定され、前記アプリケーションによる読み書きが許可される記録領域を有する内蔵記録媒体と、
アプリケーションによる読み書きが許可される前記記録領域において、前記アプリケーションの実行により記録された情報を、装置外部へ出力する外部出力手段と
を備えることを特徴とする再生装置。 - 前記外部出力手段による外部出力とは、外部記録媒体への書き込みである
ことを特徴とする請求項1に記載の再生装置。 - 前記外部記録媒体は、読み書き可能な可搬型記録媒体である
ことを特徴とする請求項2に記載の再生装置。 - 前記外部記録媒体は、ネットワークを介して接続された外部記録装置である
ことを特徴とする請求項3に記載の再生装置。 - 読み出し専用記録媒体に記録されたデジタルストリームを再生すると共に、アプリケーションを実行する再生装置であって、
前記読み出し専用記録媒体が有する識別子により特定され、前記アプリケーションによる読み書きが許可される記録領域を有する内蔵記録媒体と、
前記アプリケーションの実行時に利用可能な情報を再生装置の外部から取得し、前記アプリケーションによる読み書きが許可される前記記録領域に前記取得した情報を記録する外部入力手段と
を備えることを特徴とする再生装置。 - 前記外部入力手段による取得とは、外部記録媒体からの読み出しである
ことを特徴とする請求項5に記載の再生装置。 - 前記外部記録媒体は、読み書き可能な可搬型記録媒体である
ことを特徴とする請求項6に記載の再生装置。 - 前記外部記録媒体は、ネットワークを介して接続された外部記録装置である
ことを特徴とする請求項6に記載の再生装置。 - 読み出し専用記録媒体に記録されたデジタルストリームを再生すると共に、アプリケーションを実行する再生装置であって、
前記読み出し専用記録媒体が有する識別子により特定され、前記アプリケーションによる読み書きが許可される記録領域を有する内蔵記録媒体と、
アプリケーションによる読み書きが許可される前記記録領域において、前記アプリケーションの実行により記録された情報を、装置外部へ出力する外部出力手段と、
前記アプリケーションの実行時に利用可能な情報を再生装置の外部から取得し、前記アプリケーションによる読み書きが許可される前記記録領域に前記取得した情報を記録する外部入力手段と
を備えることを特徴とする再生装置。 - 記録媒体に記録されたデジタルストリームを再生すると共に、アプリケーションを実行する再生装置を複数含む再生システムであって、
第1再生装置は、
前記読み出し専用記録媒体が有する識別子により特定され、前記アプリケーションによる読み書きが許可される第1記録領域を有する第1内蔵記録媒体と、
前記第1記録領域において、前記アプリケーションの実行により記録された情報を、装置外部へ出力する外部出力手段とを備え、
第2再生装置は、
前記読み出し専用記録媒体が有する識別子により特定され、前記アプリケーションによる読み書きが許可される第2記録領域を有する第2内蔵記録媒体と、
前記外部出力手段により出力された情報を取得し、前記第2記録領域に記録する外部入力手段とを備えること
を特徴とする再生システム。 - 前記外部出力手段は更に、前記読み出し専用記録媒体に記録された前記デジタルストリームの再生を第1再生装置において途中で停止した場合、停止位置に関する再生情報を出力し、
前記外部入力手段は更に、前記外部出力手段により出力された前記再生情報を取得し、
前記第2再生装置は、前記取得した再生情報に基づいて、前記読み出し専用記録媒体に記録された前記デジタルストリームの再生を、前記第1再生装置で停止した位置から再開する
ことを特徴とする請求項10に記載の再生システム。 - 前記第1再生装置と前記第2再生装置とが直接接続されており、
前記情報が、外部出力手段から外部入力手段へ転送される
ことを特徴とする請求項10に記載の再生システム。 - 読み出し専用記録媒体に記録されたデジタルストリームを再生すると共に、アプリケーションを実行する再生装置の制御方法であって、
アプリケーションによる読み書きが許可される再生装置内蔵媒体の記録領域において、前記アプリケーションの実行により記録された情報を、前記再生装置の外部へ出力する外部出力ステップを含み、
前記アプリケーションによる読み書きが許可される記録領域が、前記読み出し専用記録媒体が有する識別子により特定される記録領域であること
を特徴とする制御方法。 - 読み出し専用記録媒体に記録されたデジタルストリームを再生すると共に、アプリケーションを実行する再生装置の制御方法であって、
前記アプリケーションの実行時に利用可能な情報を再生装置の外部から取得し、前記アプリケーションによる読み書きが許可される再生装置内蔵媒体の記録領域に、前記取得した情報を記録する外部入力ステップを含み、
前記アプリケーションによる読み書きが許可される記録領域が、前記読み出し専用記録媒体が有する識別子により特定される記録領域であること
を特徴とする制御方法。
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JP2010502598A JPWO2009157163A1 (ja) | 2008-06-24 | 2009-06-19 | 再生装置、再生装置の制御方法 |
US12/671,959 US20110038616A1 (en) | 2008-06-24 | 2009-06-19 | Reproduction apparatus and method of controlling a reproduction apparatus |
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JPWO2009157163A1 (ja) | 2011-12-08 |
CN101785062A (zh) | 2010-07-21 |
CN101785062B (zh) | 2012-12-05 |
US20110038616A1 (en) | 2011-02-17 |
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