Classifications

• • 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
• • 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
  • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
  • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
  • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
  • G11B27/322—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is digitally coded
• • 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
• • 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
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B2220/00—Record carriers by type
  • G11B2220/40—Combinations of multiple record carriers
  • G11B2220/41—Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
  • G11B2220/412—Distributed storage methods, i.e. the system may autonomously determine for a storage device that provides enough storage capacity for recording

Definitions

• Playback device program, and playback method
• the invention belongs to an audio stream reading technique.
• Audio stream reading technology is a technology in which a playback device reads an audio stream on which a compression code has been applied to a recording medium such as an optical disc and outputs the same to another device.
• a playback device is provided with a decoder for decompressing a compression-encoded audio stream.
• the playback device is provided. Output to other devices.
• Patent Document 1 Japanese Patent Laid-Open No. 2000-228656
• a playback device may be connected to an expensive AV amplifier, and the amplifier may have a decoding capability.
• the decoder circuit connected to such an expensive AV amplifier is compared with the decoder circuit incorporated in the playback device, the former AV amplifier is a product for the user who pursues sound quality. Therefore, expensive materials are used for the hardware, and noise countermeasures are thoroughly implemented. On the other hand, the cost of the latter hardware is inevitably reduced, so it is hard to say that thorough noise countermeasures are often used because inexpensive materials are used for circuit boards.
• An object of the present invention is to provide a playback device that can fully demonstrate the capabilities of an AV amplifier when the playback device exists in a home theater system in which an expensive AV amplifier is placed. It is.
• a playback apparatus is a playback apparatus that reads out and plays back an audio stream that has been compressed and encoded, and plays back the recording medium. If there is a playback capability in the connection partner device, a determination means for determining whether the connection partner device has a playback capability, a query means for inquiring the user whether or not the decoder built in the connection partner device is to perform decoding, When the user performs an operation to specify that decoding is to be performed at the decoder on the other side, the audio stream in the compressed and encoded state is read from the recording medium card and connected in the compressed and encoded state. It is characterized by comprising transfer means for transferring to a partner device.
• the playback device compresses the audio stream that has been read out from the recording medium power regardless of the decoding capability of the playback device. Since the data is transferred to the connected device in the same state, if the connected device is an expensive AV fan for enthusiasts and has decoding capability, the connected AV instead of the playback device Decoding can be performed on the amplifier side. If the AV amplifier has a decoder that is good at dealing with noise, the decoding can be entrusted to the AV amplifier that is the connection partner, so high-quality audio output can be realized.
• FIG. 1 is a diagram showing a form of usage of a recording medium according to the present invention.
• FIG. 2 is a diagram showing an internal configuration of a BD-ROM.
• FIG. 3 A diagram schematically showing how a file with the extension .m2ts is structured.
• FIG. 4 This shows the process by which TS packets that make up an AVClip are written to the BD-ROM.
• FIG. 5 is a diagram showing a correspondence relationship between a physical unit of a BD-ROM and a source packet constituting one file extent.
• FIG. 6 is a diagram showing what elementary streams are multiplexed in an AVClip.
• FIG. 7 is a diagram showing an internal configuration of Clip information.
• FIG. 8 is a diagram showing an EPjnap setting for a movie video stream.
• FIG. 9 is a diagram showing a data structure of PlayList information.
• FIG. 10 is a diagram showing the relationship between AVClip and PlayList information.
• FIG. 11 is a diagram showing the structure of the file sound.bdmv.
• FIG. 12 is a diagram showing an internal configuration of a local storage 200.
• FIG. 13 is a diagram showing elementary streams multiplexed into SubClip.
• FIG. 14 is a diagram showing a PID allocation map in the BD-ROM standard.
• FIG. 15 is a diagram showing an internal configuration of (a) Secondary audio stream.
• B It is a figure which shows an example of an audio frame.
• C It is a figure which shows the internal structure of metadata.
• D It is a figure which shows typically an example of gain control information.
• FIG. 16 is a diagram showing how the volume of the Primary audio stream is controlled by the metadata in the Secondary audio stream.
• FIG. 17 is a diagram illustrating a data structure of PlayList information.
• FIG. 18 shows a close-up of the internal structure of Subpath information.
• FIG. 19 is a diagram showing the correspondence between the SubClip on the local storage 200, the PlayList information on the local storage 200, and the MainClip on the BD-ROM.
• FIG. 20 is a diagram showing the EPjnap and Playltem time axes set for the MainClip, and the EP_map and SubPlayltem time axes set for the SubClip that is the primary audio stream and the secondary audio stream. .
• FIG. 21 shows the internal structure of STN_table.
• FIG. 22 (a) shows a Stream_attribute corresponding to a video stream.
• (B) A diagram showing Stream-attributes corresponding to the Primary audio stream and the Secondary audio stream.
• FIG. 23 Comb—info—secondary—audio—Primary—audio [FIG. 23] This is a diagram showing the designation of “Primary”.
• FIG. 24 is a diagram showing a virtual file system generated by the playback device 300.
• FIG. 25 is a diagram showing an internal configuration of a playback apparatus according to the present invention.
• FIG. 26 is a functional representation of the controller 22.
• FIG. 27 is a diagram showing bit assignment of (a) PSR1.
• FIG. 5B is a diagram showing bit assignment of PSR14.
• FIG. 28 is a flowchart showing a playlist playback procedure by the playlist processing unit.
• FIG. 29 (a) is a diagram showing state transitions that can be taken by the setting value of PSR1.
• (b) is a diagram showing a processing procedure of PSR1 Procedure when playback condition is changed.
• FIG. 30 is a flowchart showing a detailed processing procedure of step S5.
• FIG. 31 is a flowchart showing a procedure for setting PSR1 when a stream changes.
• FIG. 32 (a) is a diagram showing state transitions that can be taken by the setting value of PSR14.
• (b) is a diagram showing a processing procedure of PSR14 Procedure when playback condition is changed.
• FIG. 33 is a flowchart showing a detailed processing procedure of step S35.
• FIG. 34 is a flowchart showing the procedure for setting the PSR 14 when the stream changes.
• FIG. 35 is a diagram showing a connection form of (a) playback device 300, AV amplifier 500, and speaker 600.
• (b) It is a diagram showing how the number of channels changes in each of the playback device 300, the television 400, and the speaker 600.
• FIG. 36 (a) A view showing DIB. (B) Indicates a value that can be set in each DIB field. (C) A communication sequence between the playback device 300 and the AV amplifier 500 using the DIB.
• FIG. 37 shows the internal structure of PSR15 in PSR23.
• FIG. 38 is a flowchart showing a processing procedure of the controller 22 that works according to the second embodiment.
• FIG. 39 is a diagram showing a menu for accepting a setting as to whether or not to perform no-through output.
• FIG. 40 is a diagram showing a menu for accepting a setting as to whether or not to perform no-through output.
• FIG. 41 is a flowchart showing a processing procedure for setting Player capability for Audio in PSR15 according to DIB.
• FIG. 42 is a flowchart showing a processing procedure for setting Player capability for Audio in PSR15 according to DIB.
• FIG. 43 (a) is a diagram showing an installation example when the playback device 300 is installed in a car.
• (b) is a diagram showing an internal configuration of a PSR 31 that is helpful in the third embodiment.
• FIG. 44 is a diagram showing an internal structure of PlayListMark information in PlayList information.
• FIG. 45 is a diagram showing designation of a chapter position by PLMark information in PlayList information.
• FIG. 46 is a flowchart showing the processing procedure of the Java application according to the third embodiment. It is.
• FIG. 47 is a flowchart showing a chapter search processing procedure.
• FIG. 48 is a flowchart showing a chapter skip processing procedure.
• FIG. 49 is a flowchart of a Java application according to the fourth embodiment.
• FIG. 50 is a diagram showing a display example of a menu in which an “update button” is arranged.
• FIG. 1 is a diagram showing a form of usage of a recording medium according to the present invention.
• the recording medium according to the present invention is a local storage 200.
• the local storage 200 is used for supplying movie works to a home theater system including a playback device 300, a television 400, an AV amplifier 500, and a speaker 600.
• the BD-ROM 100, the local storage 200, and the playback device 300 will be described.
• the BD-ROM 100 is a recording medium on which movie works are recorded.
• Local storage 200 is built into the playback device and distributed from the movie distributor's server It is a hard disk that is used as a saucer for recorded content.
• the playback device 300 is a network-compatible digital home appliance, and has a function of playing back the BD-ROM 100.
• the content downloaded from the movie distributor's server can be combined with the content recorded on the BD-ROM100 to expand / update the content of the BD-ROM100.
• Combining the recorded content of the BD-ROM100 with the recorded content of the local storage 200, the technology that handles data that is not recorded on the BD-ROM100 is recorded as "virtual package". .
• the recording medium according to the present invention can be realized by improving the BD-ROM file system.
• Fig. 2 shows the file / directory structure of the BD-ROM.
• BD-ROM has a BDMV directory under the Root directory.
• FIG. 2 shows the internal structure of the BD-ROM.
• the BD-ROM is shown in the fourth row of this figure, and the tracks on the BD-ROM are shown in the third row.
• the track in this figure is drawn by stretching the track formed in a spiral shape from the inner periphery to the outer periphery of the BD-ROM in the horizontal direction.
• This track includes a lead-in area, a volume area, and a lead-out area.
• the volume area in this figure has a layer model of physical layer, file system layer, and application layer. If the application layer format of BD-ROM (application format) is expressed using the directory structure, it becomes like the first level in the figure. In the first stage, the BD-ROM has a BDMV directory under the Root directory.
• the BDMV directory includes files (index.bdmv, MovieObject.bdmv) with the extension bdmv.
• the BDMV directory includes files (index.bdmv, MovieObject.bdmv) with the extension bdmv.
• the BDMV directory there are also six subdirectories called PLAYLIST directory, CLIPINF directory, STREAM directory, BDBJ directory, BDJA directory, and AUXDATA directory.
• the CLIPINF directory contains a file (OOOOl.clpi) with the extension clpi.
• the STREAM directory contains a file (00001.m2ts) with the extension m2ts.
• the BDBJ directory contains a file (00001. bob j) with the extension bobj.
• In the BDJA directory there is a file with the extension jar (00001.jar).
• the AUXDATA directory stores the file sound.bdmv.
• FIG. 3 is a diagram schematically showing how the file with the extension .m2ts is configured.
• the file with the extension .m2ts (00001.m2ts) stores an AVClip.
• AVClip is a digital stream in the MPEG2- Transport Stream format.
• digitized video and digitized audio are converted into elementary streams consisting of PES packets (upper second stage), and further converted into TS packets ( (Upper 3rd stage), Subtitle presentation graphics stream (Presentation Graphics (PG) stream) and Interactive interactive graphics stream (Interactive Graphics (IG) stream) (Lower 1st stage, 2nd lower stage) First), further converted into TS packets (lower 3rd stage), and these are multiplexed.
• the PG stream is a graphics stream that constitutes subtitles for each language, and there are streams for a plurality of languages such as English, Japanese, and French.
• the PG stream consists of a series of functional segments: PCS (Presentation Control Segment) ⁇ PDS (Pallet Define Segment) ⁇ WDS (Window Define Segment) ⁇ ODS ( ⁇ Dject Define Segment) ⁇ END (END of Display Set Segment) .
• ODS Object Define Segment
• ODS is a functional segment that defines a graphics object as a caption.
• WDS Window Define Segment
• PDS Pallet Define Segment
• PCS Presention Control Segment
• Such page control includes Cut-In / Out, Fade-In / Out, Color Change, Scroll, and Wipe-In / Out, and with the page control by PCS, a certain subtitle is gradually added. If the next subtitle is displayed while deleting, the display effect can be realized.
• the IG stream is a graphics stream that realizes interactive control.
• the dialog control defined by the IG stream is a dialog control compatible with the dialog control on the DVD playback device.
• Powerful I Streams ⁇ M ICSQnteractive Composition segment)
• PDS Pulse Difinit ion segment
• ODS Object Dennition Segment
• ODS Object Definition Segment
• PDS Palette Difinition Segment
• ICS Interactive Composition Segment
• ICS Interactive Composition Segment
• ICS is a functional segment that realizes a state change in which the state of a button is changed in response to a user operation. The ICS contains a button command to be executed when a confirm operation is performed on the button.
• the AVClip is composed of one or more “STC_Seuence”.
• STC_Seuence is a section where there is no system time-base discontinuity of STC (System Time Clock) which is the system base time of AV stream.
• the discontinuity point of STC is the point where the discontinuity information (discontinuityjndicator) of the PCR packet carrying the PCR (Program Clock Reference) that is referred to obtain the decoder power ⁇ C is ON.
• Figure 4 shows the process by which TS packets that make up an AVClip are written to the BD-ROM.
• the TS packet that constitutes the AVClip is shown in the first row of the figure.
• the 188-byte TS packet constituting the AVClip is appended with 4-byte TS_extr ajieader (hatched portion in the figure) as shown in the second row, and becomes a 192-byte long Source packet.
• This TS_extra_header includes Arrival_Time_Stamp indicating the decoder input time information of the TS packet.
• the Source packet that constitutes the AVClip constitutes one or more “ATC_Seuence” in the AVClip in the third stage.
• the "ATC_Seuence” is a sequence of Source packets, the Arrival- l ime- Stamp force 21 irradiation to the Ru Arrival- Time- Clock, refers to the absence of de continuous ⁇ arrival time-base discontinutiv) .
• ATC_Seuence is a sequence of Source packets, the Arrival- l ime- Stamp force 21 irradiation to the Ru Arrival- Time- Clock, refers to the absence of de continuous ⁇ arrival time-base discontinutiv) .
• ATC_Seuence is a sequence of Source packets, the Arrival- l ime- Stamp force 21 irradiation to the Ru Arrival- Time- Clock, refers to the absence of de continuous ⁇ arrival time-base discontinutiv) .
• AT Arrival_Time_St In the Arrival_Time_Clock referenced by
• the ATC_Seuence becomes an AVClip and is recorded on the BD-ROM with the file name xxxxx.m2ts.
• Such an AVClip is divided into one or more file extents and recorded in an area on the BD-ROM, like a normal computer file.
• the fourth row shows how the AVClip is recorded on the BD-ROM.
• Each file extent constituting the file in the fourth stage has a data length equal to or greater than a predetermined Sexetent.
• Taccess is the time given according to the jump distance (distance of physical address to jump).
• TS packets from which the BD-ROM power is also read are stored in a buffer called a read buffer, and then output to the decoder.
• the input power to the read buffer is the bit rate of Rud.
• the number of sectors in the ECC block is set to Secc. If
• the TS packet from which the BD-ROM capability is also read is stored in the read buffer in the state of the source packet, and then supplied to the decoder at a transfer rate of TS_Recording_rate.
• TS packet output from the read buffer to the decoder must be continued during Tjump in order to keep the TS packet supply to the decoder at the transfer rate of TS_Recording_rate.
• the output from the read buffer is made in the state of the source packet that is not the TS packet, so if the size ratio of the TS packet to the source packet is 192/188, during the Tjump, (192/188 X TS_Recording_rate) Lead by the transfer rate of Source packet output from the buffer must be continued.
• Tx Boccupied / (Rud— TS— Recording— rate X (192/188))
• Each file extent that constitutes an AVClip has a data length that is greater than or equal to the Sextent calculated so as not to cause underflow of the decoder, so that each file extent that constitutes an AVClip is discretely stored on the BD-ROM. Even if it is positioned In this case, the TS packets are continuously read out without interrupting the TS packet supply to the decoder.
• FIG. 5 is a diagram showing a correspondence relationship between a physical unit of a BD-ROM and a source bucket constituting one file extent.
• a plurality of sectors are formed on the BD-ROM.
• the source packets that make up the file extent are grouped every 32 and written to three consecutive sectors.
• the 32 Source buckets contained in 3 sectors are called "Aligned Unit", and writing to the BD-ROM is done in Aligned Unit units.
• the error correction code is added in units of 32 sectors, and an ECC block is configured.
• the playback device can obtain 32 complete source packets as long as the BD-ROM is accessed in units of aligned units. This is the process of writing AVClip to D-ROM.
• FIG. 6 is a diagram showing what elementary streams are multiplexed on the AVClip.
• the AVClip includes a high-quality video stream having a PID of 0x1011, a Primary audio stream having a PID of 0x1100 to 0x111F, a PG stream having a PID of 0x1200 to 0xl21F, and from 0x1400 IG streams with PIDs up to 0xl41F are multiplexed.
• the packets that make up these elementary streams are given a corresponding PID, and are demultiplexed using this PID as a clue.
• An AVClip in which high-quality video streams are multiplexed in this way is hereinafter referred to as “MainClip”.
• an AVClip that is played at the same time as the MainClip is called "SubClip”.
• the file with the extension .clpi contains Clip information.
• Clip information is management information for each AVClip.
• FIG. 7 shows the internal structure of Clip information. As shown on the left side of this figure, Clip information is “ClipInfoO” which stores information about OAVClip,
• Cliplnfo there is an application type (application_type) of AVClip referred to by this Clip information.
• application_type an application type of AVClip referred to by this Clip information.
• V including moving images, or including still images (slideshows)!
• TS_recording_rate is the system bit rate information of the corresponding AVClip.
• Sequence Infoi AVClip [This is one information on 3 ⁇ 4i, C—3 ⁇ 4equence, AT and Sequenced on W. The significance of providing such information is to notify the playback device in advance of STC and ATC discontinuities. In other words, if such discontinuities exist, the same value of PTS and ATS may appear in the AV Clip, causing inconvenience during playback. Sequence Info is provided to indicate where the STC and ATC are continuous from where in the transport stream.
• Program Info is information indicating a section (Program Sequence) in which Program content is constant.
• a program is a collection of elementary streams that share the time axis for synchronized playback.
• the significance of providing Program Sequence information is to notify the playback device in advance of changes in Program content.
• the program content changes here are the points where the PID of the video stream changes or the video stream type changes from SDTV to HD TV!
• leader cu2 in the figure closes up the CPI configuration.
• the CPI consists of Ne EP_map—for—one—stream—PID (EP—map—for—one—stream—PID [0] ⁇ EP—map—for—one—stream— PID [N e-1]).
• EP_map_for_one_stream_PIDs are EP_maps for individual elementary streams belonging to the AVClip.
• EP_map is information indicating the packet number (SPN_EP_start) of the entry position where the Access Unit exists on one elementary stream in association with the entry time (PTS_EP_start).
• Lead line cu3 in the figure closes up the internal structure of EP_map_for_one_stream_PID.
• the EP—map—for—one—stream—PID has Nc EP—High (EP—High (0) to EP—High (Nc-1)) and Nf EPf ow (EP ⁇ ow (0) ⁇ EP ⁇ ow (Nf-l)) where EP—High is the SPN—EP—start and Access Unit (Non-IDR I picture, IDR picture)
• EP ⁇ ow has a role to represent the lower bits of SPN_EP_start and PTS_EP_start of Access Unit (Non-IDR I picture, ID R picture).
• EP_High (i) is the reference value for EP ⁇ ow “ref_to_EP ⁇ ow_id [i]” and the upper bits of PTS of Access Unit (Non-IDR I picture, IDR picture) “PTS_EP_High [i]” indicating “SPN_EP_High [i]” indicating the upper bits of the SPN of the Access Unit (Non-IDR I picture, IDR picture).
• i is an identifier for identifying any EP_High.
• EP ⁇ ow is “is_angle — change_point (EP ⁇ ow_id)” indicating whether or not the corresponding Access Unit is an IDR picture and “end_position_offset ( EP ⁇ ow_id) '' and ⁇ PTS_EP ⁇ ow (EP ⁇ owjd) '' indicating the lower bits of the PTS of the corresponding Access Unit (Non-IDR I picture, IDR picture) and the corresponding Access Unit (Non-IDR I picture) “SPN_EP ⁇ ow (EP ⁇ ow_id)” indicating the low-order bits of the SPN of the (CHR, IDR picture).
• EP ⁇ owjd is an identifier for identifying an arbitrary EP ⁇ ow.
• Fig. 8 shows the EPjnap settings for the movie video stream.
• the first row shows multiple pictures arranged in the display order (IDR picture, I picture, B picture, P picture specified in MPEG4-AVC), and the second row shows the time in the picture. Indicates the axis.
• the fourth row shows the TS packet sequence on the BD-ROM, and the third row shows the EPjnap setting.
• a file with the extension “mpls” (0000 1.mpls) is a file storing PlayList (PL) information.
• FIG. 9 is a diagram showing the data structure of PlayList information.
• PlayList information includes MainPath information (MainPathO) that defines MainPath and PlayListMark that defines chapters, as indicated by the lead line mpl. Contains information (PlayListMarkO).
• MainPathO MainPath information
• PlayListMarkO Contains information
• MainPath is a playback path defined for the video stream that is the main video.
• MainPath is defined from a plurality of Playltem information # 1 ⁇ '#m as indicated by an arrow mpl.
• Playltem information defines one logical playback section that composes MainPath.
• the structure of Playltem information is highlighted by the lead line hsl.
• the Playltem information includes “ClipJnformation_file_name” indicating the file name of the playback section information of the AVClip to which the IN point and Out point of the playback section belong, “Clip_codec_identifier” indicating the encoding method of the AVClip, “Is_mult i_angle” indicating whether or not Playltem forms a multi-angle, “connection_condition” indicating whether or not to seamlessly connect this Playltem to the previous Playltem, and this Playltem ⁇ Ref_to_STC_id [0] '' that uniquely indicates the STC_Sequence being set, time information ⁇ In_time '' indicating the start point of the playback section, time information ⁇ Out_time '' indicating the end point of the playback section, and!
• the playback path is composed of a set of time information “In_time” indicating the start point of the playback section and time information “Out_time” indicating the end point of the playback section.
• the playback path information is this “In_time”.
• the composition of “Out_time” is also configured.
• FIG. 10 is a diagram showing the relationship between AVClip and PlayList information.
• the first level is the PlayList information Indicates the time axis of the information.
• Levels 2 to 5 show the video streams referenced in EPjnap.
• PlayList information includes Playltem information # 1, # 2 and!, And two other Playltem information, and two playback sections are defined by In_time and Out_time of these Platform information # 1, # 2. .
• a time axis different from the AVClip time axis is defined. This is the PlayList time axis shown in the first row.
• the above clip information and playlist information are classified as “static scenarios”. This is because a playlist, which is a static playback unit, is defined by the above clip information and playlist information. This completes the explanation of the static scenario.
• a dynamic scenario is scenario data that dynamically defines playback control of AVClip. “Dynamically” means that the content of playback control is changed by a state change in the playback device or a key event generated by the user!
• BD-ROM assumes two modes as the operating environment for this playback control. The first is an operating environment that is very similar to the operating environment of a DV D playback device, and is a command-based execution environment. The second is the operating environment of the Java (registered trademark) virtual machine. The first of these two operating environments is called HDMV mode. The second is called BD-J mode. Because there are these two operating environments, the dynamic scenario is described assuming either operating environment. A dynamic scenario assuming HDMV mode is called Movie Object. On the other hand, the dynamic scenario assuming the BD-J mode is called BD-J Object.
• Movie Object is stored in a file called MovieObject.bdmv shown in FIG. 2 and includes a navigation command string.
• the navigation command string is composed of command strings that realize conditional branching, setting of the status register in the playback device, acquisition of setting values of the status register, and the like.
• the commands that can be described in Movie Object are shown below.
• PlayPL command Format PlayPL (first argument, second argument)
• the first argument is the playlist number, which can specify the playlist to be played.
• the second argument can specify the playback start position using the Playltem included in the playlist, any time in the playlist, Chapter, Mark.
• PlayPLatPlayltem0 The PlayPL function that specifies the playback start position on the PL time axis.
• the PlayPL function specifying the playback start position on the PL time axis according to Chapter PlayPLatChapter (),
• PlayPLatSpecifiedTimeO is a PlayPL function that specifies the playback start position on the PL time axis based on time information.
• Movie Object The description of navigation commands in Movie Object is very similar to the description method of navigation commands in DVD. Therefore, the task of porting disc contents on DVD to BD-ROM can be performed efficiently.
• Movie Object there is a prior art described in the following international publications. Please refer to this International Publication for details.
• BD-J Object is a BD-J mode dynamic scenario described in the Java programming environment, and is stored in the file 00001.bobj.
• the difference from Movie Object is that the command is not described directly in BD-J Object.
• the control procedure was described directly by the navigation command.
• BD-J Object indirectly specifies the control procedure by describing the specification for Java application in the application management table. By such indirect regulations, if the control procedure is shared in multiple dynamic scenarios, the control procedure can be efficiently shared.
• playlist playback in MovieObject is navigation that orders playlist playback. Although it made by the description of down commands (Pl ay pi command), BD- playlist playback in J Object will can be described by Komu set a PlayList management table showing a PlayList playback procedure in BD-J Object .
• the Java application in the BD-J mode is controlled by the application manager through the xlet interface.
• the xlet interface has four states: "loaded”, “paused”, “a ctive”, and "destoryed”.
• Java platform mentioned above includes standard Java libraries for displaying JFIF0PEG), PNG, and other image data. For this reason, Java applications can implement a GUI framework that is different from the GUI implemented by IG streams in HD DMV mode.
• the GUI framework for Java applications includes the HAVi framework specified in GEM 1.0.2, and the remote control navigation mechanism in GEM 1.0.2.
• the control can be used to perform operations on this screen display.
• the Java application is the Java archive file (00001.jar) stored in the BDJA directory under the BDMV directory in Figure 2.
• sound.bdmv is the audio data that should be output as a click sound when an operation is performed on the menu drawn in the IG stream or the GUI framework of a Java application. Is a file to be stored.
• FIG. 11 is a diagram showing the structure of the file sound.bdmv.
• the file sound.bdmv consists of Sound DataO and Sound IndexO.
• Sound DataO consists of multiple sound data (sound_data (0), sound_data (l). Of these sound data, sound_data (0) is output as the first click sound when operating the menu. Soui Ldatad) is a sound source that is output as the second click sound when operating on the menu, and these sound data are indicated by an identifier called soundJD.
• Sound IndexO includes the number of sounds (number—of—sound—entries), the index of sound—data (0), the index of sound_data (l), and the like.
• the index consists of each sound attribute (sound_attributes) such as mono / stereo, the address of the corresponding sound data (sound_data_start_address), and the continuous length of the corresponding sound data (sound_data_length).
• the sound source of the audio used in the movie play is multiplexed in the AVClip as a primary audio stream. This is because the primary audio stream representing the sound in the movie theater is supplied to the playback device simultaneously with the reading of the video stream.
• the file sound.bdmv is recorded on the BD-ROM as a separate file from the AVClip, and stores the click sound for the user's menu operation.
• the file sound.bdmv is recorded as a separate file from the AVClip, so if you try to output sound data while the AVClip is being read, an optical pickup jump will occur to read the file sound.bdmv.
• AVClip reading must be interrupted. If an interruption occurs, AVClip playback will be interrupted.
• Index.bdmv is a table indicating Movie Object or BD-J Object that constitutes the title.
• FIG. 12 is a diagram showing the internal configuration of the local storage 200.
• the recording medium according to the present invention can be produced by improving the application layer.
• the local storage 200 is shown in the fourth level of the figure, and the tracks on the local storage 200 are shown in the third level.
• the track in this figure is drawn by extending the track formed in a spiral shape from the inner periphery to the outer periphery of the local storage 200 in the horizontal direction.
• This track consists of a lead-in area, a volume area, and a lead-out area.
• the volume area in this figure has a layer model of physical layer, file system layer, and application layer.
• PlayList information which are constituent elements of the local storage 200, will be described.
• AVClip (00002.m2ts) on the local storage 200 constitutes a SubClip.
• a SubClip is an AVClip that includes an elementary stream that is decoded and played back simultaneously with the MainClip.
• Such SubClip has types such as “Primary audio stream”, “Secondary audio stream”, “Presentation tjrapmcs (PG) stream”, and “Interactive wapmcsQtj”. (Hereafter, SubClip may be called Out-of-MUX stream o)
• 00002.m2ts shown in FIG. 12 includes a secondary audio stream, a PG stream, and an IG stream multiplexed in one SubClip.
• the details of the second ary audio stream will be described below.
• the “Primary audio stream” is an audio stream that is a so-called main voice
• the “Secondary audio stream” is an audio stream that is a so-called sub-voice.
• the audio playback of the Secondary audio stream is mixed with the playback audio of the Primary audio stream before being used for output.
• the audio treated as the secondary audio stream includes, for example, “commentary audio”.
• the primary audio stream that is the primary audio stream is the audio of the main part of the movie work, and the secondary audio power that is the secondary audio stream. If it is a commentary voice of the movie director, the audio of the main part of the movie work is mixed with the commentary audio Will be output.
• the secondary audio stream is recorded only in the local storage 200 and is not recorded on the BD-ROM.
• Primary audio stream is BD-ROM Or in the local storage 200.
• the primary audio stream encoding codec may be different from the secondary audio stream encoding codec.
• FIG. 13 is a diagram showing elementary streams multiplexed into the SubClip.
• the secondary audio stream with PID from OxlAOO to OxlAlF is multiplexed.
• the PID of the PG stream and IG stream in SubClip is the same as the PID of the PG stream and IG stream in MainClip, but the PID of the secondary audio stream is different in the upper bytes, so 32 Secondary The PID of the audio stream does not overlap with the PIDs of the 32 primary audio streams.
• FIG. 14 is a diagram showing a PID allocation map in the BD-ROM standard.
• Ox 0100 is assigned to Program_map
• 0x1001 is PCR
• 0x1011 is video stream
• 0x1100 to 0x111F zone is Primary audio stream
• 0x1200 to 0x12 1F zone is PG stream
• Zones from 0x1400 to 0xl41F are assigned to the IG stream
• zones from OxlAOO to OxlAlF are assigned to the secondary audio stream.
• the zone assigned to the primary audio stream is different from the zone assigned to the secondary audio stream! /.
• FIG. 15 (a) shows the internal structure of the Secondary audio stream.
• the Secondary audio stream is composed of a plurality of audio frames.
• FIG. 15B shows an example of an audio frame.
• the audio frame of the secondary audio stream includes metadata.
• FIG. 15 (c) shows the internal structure of the metadata.
• the metadata includes “downmixing information” and “gain control information”.
• Downmixing information is information for downmixing. Downmixing is a conversion that reduces the number of audio playback channels to be less than the number of code channels. Downmixing information is defined by defining a conversion coefficient matrix for downmixing. The player is caused to perform this downmixing. One example of downmixing is playing a 5.1ch audio stream in 2ch.
• Gain control information is information for raising and lowering the gain at the time of audio output on the Primary audio stream side, but it is only necessary to lower it here.
• Figure 15 (d) schematically shows an example of gain control information.
• the metadata of the secondary audio stream can reduce the output of the primary audio stream that is played back simultaneously in real time.
• the pair of primary audio and secondary audio to be mixed is known in advance, so there is no need to control the gain of the two audios in real time. It is enough to mix (superimpose) the secondary audio gain as it is while lowering the IN.
• the gain control information may be valid gain control information stored for the duration of duration from the time specified in mark_time_stamp of PlayListMark.
• FIG. 16 is a diagram showing how the volume of the Primary audio stream is controlled by the metadata in the Secondary audio stream.
• the first level in the figure shows the time axis, and the second level shows the playback output of the primary audio stream that can be mixed.
• the third row shows the playback output of the secondary audio stream, and the fourth row shows the metadata multiplexed in the secondary audio stream.
• the metadata arranged in the audio frame corresponding to the playback time tl suppresses the overall volume of the primary audio stream playback output, and the metadata arranged in the audio frame corresponding to the playback time t2 is the primary audio stream. Stream playback Output sound is restored.
• the volume of the playback output of the Primary audio stream and the volume of the playback output of the Secondary audio stream will be combined, causing the speaker to be damaged. The situation can be avoided.
• the “gain control information” stored in each audio frame of the secondary audio from tl to t2 determines the gain of the primary audio. By the amount of It is sufficient to specify that. If it is assumed that mixing playback is performed by jumping from tl to t2 during special playback, etc., this method, which always allows appropriate gain control, is better.
• PlayList information on the local storage 200 is information that defines a bundle of two types of playback paths called MainPath and Subpath as Playlist (PL).
• FIG. 17 is a diagram showing the data structure of PlayList information.
• PlayList information includes MainPath information (MainPathO) that defines MainPath, PlayListMark information (PlayListMark (;)) that defines chapters, It consists of Subpath information (SubpathO) that defines Subpath.
• MainPathO MainPath
• PlayListMark information PlayListMark (;)) that defines chapters
• It consists of Subpath information (SubpathO) that defines Subpath.
• the internal structure of the PlayList information and the internal structure of the Playltem information are the same as those of the BD-ROM, and the description is omitted.
• MainPath is the playback path defined for the main video MainClip
• Subpath is the playback path defined for the SubClip to be synchronized with MainPath.
• FIG. 18 is a diagram showing a close-up of the internal structure of the Subpath information. As indicated by an arrow hcO in this figure, each Subpath includes SubPath_type indicating the type of SubClip and one or more SubPlayltem information ⁇ ⁇ ⁇ SubPlayltemO ⁇ ⁇ ⁇ .
• the lead line hcl in the figure closes up the structure of the SubPlayltem information.
• the SubPlayltem information is shown in the figure with the arrow hcl as “Clip jnformation_file_name”, “Clip_code c—identifier ⁇ “ ref—to—STCjd [0] ”,“ SubPlayItem—In—time ”,“ SubPlayItem—Out—time ” ”,“ Sync_PlayItem_id ”, and“ sync_start_PTS_of_PlayItem ”.
• “Clip_information_file_name” is information for uniquely specifying a SubClip corresponding to SubPlayltem by describing the file name of Clip information.
• “Clip_codec_identifier” indicates an AVClip encoding method.
• “Remu o_STC_id [0]” uniquely indicates the STC_Sequence that is targeted by this Playltem.
• “SubPlayItem_In_time” is information indicating the start point of SubPlayltem on the playback time axis of SubClip.
• “SubPlayItem_Out_time” is information indicating the end point of SubPlayltem on the playback time axis of SubClip.
• Sync_PlayItem_id is information for uniquely designating what the SubPlayltem should synchronize among the Playltems constituting the MainPath. SubPlayltem-In-time exists on the playback time axis of the PlayItem specified by sync-Playltem-id.
• “sync_start_PTS_of_PlayItem” indicates where the starting power of the SubPlayltem specified by SubPlayItem_In_time exists on the playback time axis of the PlayItem specified by sync_PlayItem_id.
• SubPath_type is set to a value between 0 and 255 to indicate what playback path the SubPath defined by the SubPath information is.
• SubPath_type When SubPath_type is set to 5, it indicates that the SubPath defined by this SubPath information is the Primary audio playback path.
• This Primary audio playback path is used when an audio stream to be played back in place of the Primary audio referenced in MainPath (Playltem) is stored in SubPath (SubPlayltem).
• SubPath_type When SubPath_type is set to 6, this SubPath information indicates that a Presentation Graphics playback path for additional replacement is defined. What is additional carlo 'replacement is a PG stream that can be added and replaced with respect to a PG stream that can be played back with Playltem information.
• SubPath_type When SubPath_type is set to 7, this SubPath information indicates that an Interactive Graphics playback path for addition / replacement is defined. What is additional carro 'replacement is an IG stream that can be added and replaced with respect to an IG stream that can be played back with Playltem information.
• SubPath_type When SubPath_type is set to 8, the SubPath information indicates that the secondary audio playback path is defined. This Secondary audio playback path is defined for additional tracking. What is added is Secondary audio that should be mixed with the playback audio of Primary audio that can be played back with Playltem information. For example, when mixing and playing primary audio and secondary audio, it is necessary to operate two audio decoders and a mixer, so the requirements are different from the case where only normal primary audio is played back. It is necessary to be able to acquire what type of playback. For this reason, the SubPath_type and STN_table PIDs can be used to notify the player before playback that there is secondary audio to be synchronized.
• FIG. 19 is a diagram showing the correspondence between the SubClip on the local storage 200, the PlayList information on the local storage 200, and the MainClip on the BD-ROM.
• the first row shows the SubClip that exists on the local storage 200.
• the SubClip on the full-capacity storage 200 has types such as Secondary audio stream, PG stream, and IG stream. Any of these will be used for synchronized playback as SubPath.
• the second level shows two time axes defined by PlayList information.
• the lower time axis in the second row indicates the Playltem time axis defined by the Playltem information, and the upper time axis is
• SubPlayltem- Clip- information- file-name of SubPlayltem information is S
• SubPlayItem.IN_time and SubPlayltem.OuUime play a role of defining the start and end points of the playback section on the SubClip.
• the arrow Sync_PlayItem_Id is intended to synchronize with any Playltem! /, And plays the role of specifying synchronization, and sync_start_PTS_of_PlayItem plays the role of determining the position of SubPlaylte mjn_time on the Playltem time axis.
• FIG. 20 shows the EPjnap and Playltem time axes set for the MainClip and the SubClip. It is a diagram showing the EP_map and SubPlayltem time axis set as above.
• the middle, lower 4 to lower 1 in the figure indicate the Playltem time axis, picture sequence, Main Clip time axis, EP_map, and TS packet sequence shown in FIG.
• the first to third tiers show the TS packet sequence, EP_map, and SubClip time axis.
• the top four rows show the SubPlayltem time axis.
• PlayList information in the local storage 200 is STN_Table.
• PlayList information on the local storage 200 will be described.
• STN_table is a table indicating a plurality of elementary streams multiplexed in the AVClip specified by Clip_Information_file_name of Playltem information and Out_of_MUX stream specified by Clip_Information_file_name of SubPlayltem information! More specifically, STN_table is configured by associating Stream_attribute with Stream_entry for each of a plurality of elementary streams multiplexed on MainClip and an Out_of_MUX stream multiplexed on SubClip.
• FIG. 21 shows the internal structure of STN_table.
• STN_table contains multiple entry-attributes with entries and attributes in ST N_table, and the number of entries—attributes (number—of—video—stream—entnes') number—of—audio—stream—en tries' number—of—PG—stream—entries (number—of—IG—stream—entries) has a structure.
• each entry-attribute pair is a video stream, primary audio stream, secondary audio stream, PG stream, or IG stream that can be played in Play Item. It corresponds to.
• the Stream_entry and Stream_attribute in the Sec ondary audio stream are confused with the Cmb—info—secondary—audio—Primary—audio 1, J '; Te.
• Fig. 22 (a) is a diagram showing Stream_attribute corresponding to a video stream.
• Stream_attribute in video stream indicates the video stream display method. “Video_format”, “frame_rate” indicating the display frequency of the video stream, and the like.
• FIG. 22 (b) is a diagram showing Stream_attribute corresponding to the Primary audio stream and Secondary audio stream.
• Stream_attributes in the primary audio stream and the secondary audio stream are “stream_coding_type” indicating the encoding method of the audio stream, “audio_presentation_type” indicating the channel configuration of the corresponding audio stream, and the corresponding audio stream.
• FIG. 22 (c) is a diagram showing Stream_entry in the video stream. As shown in the figure, the Stream_entry of the video stream includes “ref_to_Stream_PID_of_Main_Clip” indicating the PID used for demultiplexing of the video stream.
• the Stream_attribute of the Primary audio stream, IG stream, and PG stream multiplexed by MainClip is an open expression in Fig. 22 (c).
• FIG. 22 (d) is a diagram showing Stream_entry in a stream that is multiplexed by SubClip (hereinafter described as a secondary audio stream).
• the Stream_entry of the secondary audio stream refers to the secondary audio stream, “Ref_to_Sub_Path_id” indicating the SubPath information, the secondary audio stream is multiplexed! /, “Ref_to_Sub_Clip_entry_id” indicating the SubCli P, and the secondary audio stream “Rem” indicates the PID used for demultiplexing.
• _stream_PID_of_Sub_Clip is included.
• Fig. 22 (e) shows the internal structure of Comb_info_Secondary_audio_Primary_audio, which is associated with the string between the Stream-entry and Stream-attribute in the Secondary audio stream.
• FIG. 23 is a diagram showing designation of a primary audio stream by Comb-info-Secondary-audio-Primary-audio.
• the right side of the figure shows 32 Secondary audio streams
• the left side shows 32 Primary audio streams.
• the arrow yml Indicates the designation by Comb—info—Secondary—Audio—Primary—audio in Secondary # 1.
• the secondary audio stream is not mixed, and when the primary audio stream having such other attributes is reproduced, In other words, whether or not mixing is possible according to the audio attribute, such as mixing the secondary audio stream, can be set at the time of authoring.
• FIG. 24 is a diagram showing a virtual package generated by the playback device 300. As shown in FIG. The upper left of the figure shows the recorded contents of the BD-ROM, and the lower left shows the recorded contents of the local storage 200. The right side shows the structure of the virtual package.
• the playback device combines the AVClip, Clip information, and PlayList information that exist in the local storage 200 with the AVClip, Clip information, and PlayList information that exist in the BD-ROM, thereby creating a virtual BD-ROM disc image. Get (virtual package).
• Clip information # 2 (00002.clpi) on iOLocal Storage is virtually added to the CLPI directory on the BD-ROM.
• FIG. 25 is a diagram showing the internal structure of the playback apparatus according to the present invention.
• the reproducing apparatus according to the present invention is industrially produced based on the inside shown in the figure.
• the playback device according to the present invention mainly comprises two parts, a system LSI and a drive device, and can be industrially produced by mounting these parts on the cabinet and substrate of the device.
• a system LSI is an integrated circuit that integrates various processing units that perform the functions of a playback device.
• the playback devices thus produced are: BD-ROM drive la, bus lb, read buffers 2a, b, demultiplexer 3a, b, video decoder 4, video plane 5, buffer 6a, b, audio decoder 7a, b, DownMix / DownSample8, Mixer 9a, Mixer 9b, Switch 10a, Encoder 0b, Interactive Graphics Acho ⁇ T11, Interactive (graphics player ⁇ 12, Presenta tion Graphics Decoder 13, Presentation Graphics Plane 14, JPEG Decoder 15, Still plane 16, synthesis unit 17, STC generation unit 18a, b, ATC generation unit 19a, b, memory 21, controller 22, PSR set 23, PID conversion unit 24, communication unit 25, operation acceptance Unit 26 and HDMI transmission / reception unit 27.
• the BD-ROM drive la performs loading Z ejection of the BD-ROM and executes access to the BD-ROM disk.
• TS packets read from the BD-ROM and TS packets read from the local storage 200 are transferred.
• the read buffer 2a is a FIFO memory, and TS packets read from the BD-ROM disc 100 or the local storage 200 are stored in a first-in first-out manner.
• the read buffer 2b is a FIFO memory, and TS packets read from the local storage 200 are stored in a first-in first-out manner.
• the demultiplexer 3a receives the PID notified from the PID converter 24 of the TS packets having PIDs of 0xl011,0xll00 to 0x 111F, 0X1200 to 0X121F, and 0X1400 to 141F.
• the contents are output to the video decoder 4, the audio decoder 7a, the interactive graphics icon 11, and the presentation graphics icon Id, respectively.
• the demultiplexer 3b has a TS packet having a PID of 0xlA00 to 0xlAlF among TS packets transmitted to the bus lb, that is, a multiplex of TS packets constituting the secondary audio stream. Perform separation.
• the demultiplexing of the secondary audio stream by the demultiplexer 3b is based on the reference value of the PID described in the stream_entry of the secondary audio stream included in the STN_table corresponding to the stream number stored in the PSR14, and the bus lb. This is done by comparing the PID of the TS packet that has been transferred and outputting the TS packet having the matching PID to the audio decoder 7b via the buffer 6b.
• the above comparison shows that the upper byte "1A" of the PID reference value described in the stream_entry and the upper PID of the TS packet transferred to the bus lb
• the lower byte of the PID reference value described in stream_entry (numeric value from 0x00 to OxlF) and the lower byte of the PID of the TS packet transferred to bus lb (0x00 to OxlF) It is necessary to make a comparison with This is because there are multiple secondary audio streams, and it is necessary to refer to the lower byte of the PID to uniquely identify the secondary audio stream to be played.
• the demultiplexer 3a and the demultiplexer 3b are connected to the BD- TS packet read from ROM and local storage 200 TS
• the read TS packet can be handled as one transport stream and loaded into the buffer.
• the PIDs assigned to the TS packets that make up the primary audio stream and the TS packets that make up the secondary audio stream are in different zones in the PID assignment map, so the demultiplexer 3a and demultiplexer 3b As one, it is possible to output these Primary audio stream and Secondary audio stream as separate elementary streams while capturing them.
• the demultiplexer 3a and the demultiplexer 3b have one transport stream. Since it can be supplied to the decoder by going through the same procedure as demultiplexing multiple audio streams multiplexed to the same, only TS packets with a given PID are demultiplexed from one transport stream
• the primary audio stream and secondary audio stream can be supplied to the corresponding decoder in a configuration that is compatible with such a demultiplexer.
• demultiplexers may be combined into one for implementation. In this case, it is also effective that the primary audio and secondary audio have different PIDs.
• the video decoder 4 decodes the plurality of PES packets output from the demultiplexer 3a to obtain an uncompressed picture and writes it to the video plane 5.
• Video plane 5 is a plane for storing uncompressed pictures.
• a plane is a memory area for storing pixel data for one screen in the playback device.
• the resolution in the video plane 5 is 1920 ⁇ 1080, and the picture data stored in the video plane 5 is composed of pixel data expressed by 16-bit YUV values.
• the buffer 6c is a memory for preloading the file sound.bdmv read from the BD-ROM / local storage. It is desirable to preload the buffer 6c at the time of title switching when BD-ROM singing. This is because if the file sound.bdmv is read during playback of an AVClip, an optical pickup seek to read a file other than the AVClip occurs. On the other hand, when loading a BD-ROM or switching titles, it is rare that AVClip playback continues. Reading sound.bdmv can increase the responsiveness of the device and make it difficult to interrupt AVClip playback.
• the audio decoder 7a converts the TS packet stored in the buffer 6a into a PES packet, decodes the PES packet, and obtains and outputs audio data in an uncompressed LPCM state. As a result, digital output in the Primary audio stream is performed.
• the audio decoder 7b converts the TS packet stored in the buffer 6b into a PES packet, decodes the PES packet, and obtains and outputs audio data in an uncompressed LPCM state. As a result, digital output in the secondary audio stream is performed.
• DownMix / DownSample8 performs conversion to match the audio attribute of the digital audio output from the audio decoder 7a with the audio attribute of the digital audio output from the audio decoder 7b when mixing.
• the audio attribute is the sampling frequency and / or the number of channels, and processing for matching them is performed.
• DownMix / DownSample8 or mixer 9a also performs processing for lowering the gain on the primary audio stream side according to the metadata multiplexed in the secondary audio stream, using the gain control information extracted by audio decoder 7b.
• the mixer 9a mixes the LPCM digital audio output from the audio decoder 7a and the LPCM digital audio output from the audio decoder 7b.
• the mixer 9b mixes the LPCM digital audio output from the mixer 9a with the sound data stored in the notch 6c.
• the mixing by the sound mixer 9b is performed by the CPU 22 decoding a navigation command intended to generate a click sound or a byte code intended to generate a click sound.
• the switch 10a supplies to the audio decoders 7a and b the TS packets constituting the Primary audio stream demultiplexed by the demultiplexer 3a and the TS packets constituting the Secondary audio stream demultiplexed by the demultiplexer 3b.
• this switch is a switch for switching the output of only the elementary stream to the other device without supplying it to the audio decoders 7a and 7b.
• Pass-through output refers to outputting the elementary stream to other devices without supplying the TS packets that make up the Primary audio stream to the audio decoders 7a and 7b.
• the TS packet to elementary stream converter (which removes the TS / PES header) is built into switch 10a. (Not shown)
• the encoder 10b is obtained by decoding the audio decoders 7a and 7b, and when LPCM audio data mixed by the mixer 9a and the mixer 9b is sent as surround sound on a digital interface such as S / PDIF, Compresses and encodes the mixed LP CM into Dolby Digital (DD) format or Dolby Theater System (DTS) format.
• DD Dolby Digital
• DTS Dolby Theater System
• the Interactive Graphics (IG) decoder 11 decodes the IG stream from which the BD-ROM 100 or the local storage 200 output is also read, and writes the uncompressed graphics to the IG plane 12.
• IG Interactive Graphics
• the Presentation Graphics (PG) decoder 13 decodes the PG stream read from the BD-ROM or the local storage 200, and writes the uncompressed graphics to the Presentation Graphics plane 14. Due to the decoding by the PG decoder 13, subtitles appear on the screen.
• the Presentation Graphics (PG) plane 14 is a memory having an area for one screen, and can store uncompressed graphics for one screen.
• the JPEG decoder 15 decodes the JPEG data recorded in the BD-ROM or the local storage 200 and writes it in the still plane 16.
• Still plane 16 is a plane in which uncompressed graphics data obtained by expanding JPEG data is stored. This graphics data is used as a GUI framework! /, A so-called “wallpaper”, drawn by Java applications.
• the composition unit 17 stores the contents of the Interactive Graphics plane 12 and the Presentation Graphic.
• the composite image obtained by combining the stored content of the s plane 14, the stored content of the video plane 5, and the stored content of the Still plane 16 is obtained.
• the STC generators 18a and 18b generate System Time Clock (STC) according to instructions from the controller 22 and adjust the operation timing of each decoder.
• STC System Time Clock
• the ATC generation units 19a and 19b generate an arrival time clock (ATC) according to an instruction from the controller 22 and adjust the operation timing of the demultiplexer.
• the memory 21 is a memory for storing current PL information and current Clip information. Current PL information is recorded in the BD-ROM, and among the multiple PlayList information that is currently processed! Current Clip information is the information currently being processed among the multiple Clip information recorded on the BD-ROM / local storage.
• the CPU 22 decodes the Java application referenced by the Movie Object or BD-J Object stored in MovieObject.bdmv, and plays the playlist according to the decoding result (according to the current PlayList information).
• BD-ROM playback control is realized by executing (playback control). It also controls ATS and STC as described above.
• the PSR set 23 is a register built in the playback device, and includes 64 Player Setting / Statistics Registers (PSR) and 4096 General Purpose Registers (GPR). Of the Player Settings / Status Register settings (PSR), PSR4 to PSR8 are used to represent the current playback point.
• PSR Player Setting / Statistics Registers
• GPR General Purpose Registers
• the PID conversion unit 24 converts the stream numbers of the Primary audio stream and Secondary audio stream stored in the PSR set 23 into PIDs based on the STN_Table, and converts the PID as the conversion result into the demultiplexer 3a and the demultiplexer 3a. Instructs multiplexer 3b.
• the communication unit 25 realizes the communication function of the reading device. If given from the V, URL designation power ⁇ ava application in the BD-J mode, TCP connection with the website corresponding to the URL, FTP connection, etc. Establish. By establishing such a connection, the Java application is made to download from the web site.
• the operation accepting unit 26 accepts an operation performed on the remote controller from the user, and notifies the controller 22 of User Operation information indicating such an operation.
• the HDMI transceiver 27 is connected via HDMI (HDMhHigh Definition Multimedia Interface). Receive information about the device from other connected devices, and connect digital uncompressed video obtained by decoding Video Decoder 4 via HDMI along with LPCM and compressed audio data. To other devices.
• HDMI HDMI
• Video Decoder 4 receives information about the device from other connected devices, and connect digital uncompressed video obtained by decoding Video Decoder 4 via HDMI along with LPCM and compressed audio data. To other devices.
• FIG. 26 is a functional representation of the controller 22 shown in FIG.
• FIG. 26 is a functional representation of the controller 22, and as shown in the figure, the controller 22 includes a playlist processing unit 41, a procedure execution unit 42, a procedure execution unit 43, a mixing control unit 44, and an ATC generation unit. 19a, b, STC generators ATC / STC control units that make ATC / STC generated for 18a, b are configured.
• FIG. 27 (a) shows the bit assignment of PSR1.
• the lower 8 bits (b0 to b7) of 32-bit PSR1 are stream numbers, and entries are described in STN_table of the powerful Play Item, and one of the multiple Primary audio streams. Is identified. If the set value of PSR1 changes, the playback device plays back the primary audio stream after the change. PSR1 is set to OxFF as an initial value, and can be set to a value between 1 and 32 by the playback device. This OxFF is an indefinite value, and indicates that there is no Primary audio stream or that the Primary audio stream is not selected. The setting value from 1 to 32 is interpreted as the stream number of the Primary audio stream.
• FIG. 27 (b) shows the bit assignment of PSR14.
• the lower 8 bits (b0 to b7) in 32-bit PSR14 are the stream number, and identify one of the multiple secondary audio streams whose entry is described in the STN_table of the current Play Item. To do. If the set value of PSR14 changes, the playback device plays back the secondary audio stream after the change.
• PSR14 has OxFF as the initial value. It is set and can be set to a value between 1 and 32 by the playback device. This OxFF is an indefinite value and indicates that there is no Secondary audio stream or that no Secondary audio stream is selected. The setting value from 1 to 32 is interpreted as the stream number of the secondary audio stream.
• FIG. 27 (c) shows the bit assignment of PSR31.
• the 16th bit to the 19th bit (bl6 to bl9) is the Player Profile information. If it is 0000b, the playback device is shipped in the grace period. Indicates a playback device.
• a grace period is a period during which implementation of a certain function can be omitted if it is shipped within this period.
• One of the functions that can be omitted for shipment to this grace period is the audio mixing function. If the PSR31's Player Profile information power is 0000b, various functions such as mixing are implemented. It is possible to know that this is a playback device that is omitted.
• the Player Profile information is 0001b, this indicates that the playback device is a playback device shipped after the grace period has elapsed. Since playback devices shipped after the grace period are in principle required to implement all functions, if such Player Pr file information is 0001b, it is said that the playback device is a playback device with mixing installed. Can know.
• the Player Profile information is 001 lb, this indicates that the playback device is a playback device that implements all functions.
• a powerful playback device implements all functions regardless of whether the grace period has elapsed, so if such Player Profile information is 001 lb, it is a playback device with a sound mixing function. If there is, you can know.
• the PSR may have information indicating the number of channels that the playback device can mix.
• the PSR may have information indicating the final number of audio output channels.
• the mixed 5.1ch LPCM audio can be output with LPCM as long as I / F such as HDMI is connected.
• I / F such as S / PDIF
• it is sent to the encoder.
• 5.1ch cannot be output to S / PDIF
• 2ch (L / R) is output. End up. Therefore, if it is determined that there is an encoder behind the mixer and it is connected to S / PDIF (eg not connected via HDMI), the final number of audio output channels can be set to 5.1ch. If there is no encoder after the mixer, the final number of audio output channels can be set to 2ch after mixing.
• the playlist processing unit 41 realizes PL playback.
• the playlist processing unit 41 plays the video stream and the primary audio stream from the position corresponding to In_time of Playltem information to the position corresponding to OuUime, and in synchronization with this, the SubPlayltem information
• the audio decoder 7b is caused to play the secondary audio stream from the position corresponding to Sub_PlayItem_In_time to the position corresponding to Sub_PlayItem_Out_time.
• FIG. 28 is a flowchart showing the playlist playback procedure by the playlist processing unit.
• This flowchart reads the current PL information (.mpls) (step S 101), and then steps S 102 to S.
• the process of S110 is executed.
• step S102 to step S110 are repeated when the processing of step S103 to step S110 is repeated for each PI information constituting the current PL ⁇ blueprint until step S109 force SYes is obtained.
• Configure loop processing! In this loop process, the PlayItem to be processed is called PlayItem # x (PI # x).
• This Playltemfe is initialized by being set to Playltem at the head of the current playlist (Step S102).
• the above loop processing termination requirement is that this Playltemfe becomes the last Playltem in the current playlist (Step S109), and if it is not the last Playltem, the next Playltem in the current playlist is Playltemfe. (Step SI 10).
• Steps S103 to SI10 which are repeatedly executed in the loop process, read the Clip information specified by Clip_information_file_name of Playlm # x into the memory (Step S103), and set In_time of Playltemfe to the current Clip information.
• EPmap convert to I picture address u (step S104), use Playumentfe OuUime and EPjnap of current clip information Convert to I picture address v (step S 105), find the next I picture of address V obtained by these conversions, and set one address before that to address w (step S 107), using the calculated address w, it instructs the BD-ROM drive 1 or the local storage 200 to read the TS packet from the I picture address u to the address w (step S108). .
• the video decoder or the like is instructed to output from mark_time_stamp of the current PLMark to OuUime of Play ## x (step S106).
• the portion instructed by Playltemfe in the AVClip is played back.
• step S110 the next Playltem in the current playlist is set to Playltemfe (step S110), and the process returns to step S103.
• step S110 the next Playltem in the current playlist is set to Playltemfe (step S110), and the process returns to step S103.
• the Procedure Execution Unit 42 executes a predetermined stream selection procedure when a change from one Playltem information to another Playltem information occurs, or when an operation for switching the stream number is performed by the user. Write a new stream number. Since the playback device plays back the Primary audio stream according to the stream number written in PSR1, the Primary audio stream is selected through the powerful PSR1 setting.
• FIG. 29 (a) is a diagram showing state transitions that can be taken by the setting value of PSR1.
• Valid in this figure Means that the value of PSR1 is equal to or less than the number of entries described in the STN_table of the Play Item and can be decoded.
• Invalid is a force whose PSR1 value is 0, or a force whose number exceeds the number of entries described in the Play Item STN_table, or an entry described in the Play Item STN_table. Even if it is a value of 32 to 32, it is impossible to decode! /.
• the broken line frame in Fig. 29 (a) schematically shows the procedure for determining the PSR value at the time of state transition.
• PSR setting processing procedure “Procedure when playback condition is changed” and “Procedure when Stream change is requested” are emphasized.
• “Procedure when Stream Change is requested” indicates a processing procedure to be executed when the user requests any switching (stream in FIG. 29A).
• Procedure when Stream change is requested is a stream selection procedure, which will be described in detail later with a flow chart.
• arrows in Fig. 29 (a) symbolically indicate state transitions between states that the PSR can take.
• Load Disc means an event that the BD-ROM is loaded on the playback device.
• PSR1 is set to an indefinite value (OxFF) during powerful loading.
• Start PlayList playback means an event that playback processing based on PL has started. It can be seen that when the powerful event force S occurs, Procedure when playback condition is changed force S is executed and PSR1 is set to Valid.
• Termination PlayList playback means an event that the playback processing based on PL is finished. When a powerful event occurs, Procedure when playback condition is changed is not executed, and it turns out that it shifts to Invalid! /.
• “ChangeXXX” means an event that a user requests to switch XXX (Stream in this figure). If PSR1 is Invalid and a profitable event occurs (cjl in the figure), PSR1 is set to the required value. Even if the value set in this way indicates a valid stream number! /, This PSR1 setting value is treated as an invalid value. In other words, the PSR that is Invalid is not changed to Valid in the state transition caused by the event “ChangeXXX”.
• “Cross a Playltem boundary” means the boundary passing and! / ⁇ ⁇ event of a certain Play Item.
• the boundary between Play Items means the interval between the end of the preceding side and the end of the succeeding side of the two consecutive Play Items.
• Fig. 29 (b) is a diagram showing the processing procedure of Procedure when playback condition is changed. This processing procedure sets PSR1 with a combination of two judgment steps, Step Sl and Step S2.
• Step S1 determines whether or not the number of entries in the STN_table is 0. If it is 0, the value of PSR1 is maintained (step S3).
• Step S2 determines whether the number of entries in STN_table is larger than that in PSR1 and the condition (A) is true when the number of entries in STN_table is not zero.
• Condition (A) is that the playback device has the capability to play the Primary audio stream specified by PSR1. If Step S2 is Yes, PSR1 is maintained (Step S4). If the value count value of PSR1 is greater than or equal to condition (A), PSR1 is reset (step S5).
• FIG. 30 is a flowchart showing the detailed processing procedure of step S5.
• Steps S6 and S7 form a loop process that repeats step S8 for all Primary audio streams.
• each primary audio stream to be processed is called a primary audio stream IV.
• step S8 it is checked whether the primary audio stream i satisfies the three conditions (a), (b), and (c).
• the condition (a) is that the playback device has the capability to play the Primary audio stream i, and whether or not this condition is satisfied is determined by PSR15 and the s tream_coding_type of the Primary audio stream i. Done by comparison.
• Condition (b) is that the language attribute of the primary audio stream i is the same as the language setting of the playback device, and whether or not this is satisfied is determined by the primary audio stream described in the STN_table. This is done by comparing whether i's Audio_language_code is the same as the PSR setting.
• the condition (c) is that the channel attribute of the Primary audio stream i is surround, and the playback apparatus has the ability to play it. Judgment whether or not this is satisfied depends on the ratio of PSR15 and Audio—presentation-type, stream—coding—type of Audio Stream
• this flow chart is assigned to the Primary audio stream according to the pattern of conditions to be satisfied, such as “What and which Primary Audio Stream i satisfies” and “How many conditions are satisfied”. Give priority.
• Step S9 is a determination of whether or not there is a Primary audio stream that satisfies (a). If not, an indefinite value (OxFF) is set to PSR 1 (step S14).
• Step S10 is a determination as to whether or not there is a Primary audio stream that satisfies all of the conditions (a), (b), and (c). If it exists, the primary audio stream number that satisfies the conditions (a), (b), and (c) is set in PSR1 (step S15).
• step S15 the order in each stream is determined according to the order of entries in the STN_table. In other words, for primary audio streams with the same codec-language attribute-channel attribute, the entry order is the fastest by referring to the entry order in the STN.table. ⁇ The primary audio stream is selected. .
• the authoring person can specify the selection control of which stream is preferentially reproduced during reproduction and which stream is postponed during authoring.
• Step S11 is a determination as to whether or not there is a Primary audio stream that satisfies the conditions (a), (b) if there is no Primary audio stream that satisfies all of the conditions (a), (b), and (c). . If it exists, among the primary audio streams satisfying the conditions (a) and (b), the one with the earliest entry order in the STN_table is set in PSR1 (step S16).
• step S12 if there is no Primary audio stream that satisfies all of the conditions (a), (b), and (c), or there is no Primary audio stream that satisfies the conditions (a) and (b), the condition (a ) (c) is a determination of whether or not there is a Primary audio stream. If it exists Of the primary audio streams satisfying the conditions (a) and (c), the one with the earliest entry order in the STN_table is set in PSR1 (step S17).
• Step S13 is performed when there is no Primary audio stream that satisfies all of the conditions (a), (b), and (c), the conditions (a), (b), and the conditions (a), (c). Judgment whether or not there is a Primary audio stream that satisfies condition (a). If it exists, the primary audio stream that satisfies condition (a) with the earliest entry order in STN_table is set in PSR1 (step S18).
• FIG. 31 is a flowchart showing the procedure for setting PSR1 when the stream changes. The difference between this flowchart and Fig. 29 (b) is that the notation of PSR1 in Fig. 29 (b) is replaced by X. This X is a value based on the User Operation information output from the operation accepting unit 26 and the button command output from the IG decoder 13.
• Step S 19 in this flowchart determines whether the number of entries in the STN_table is larger than X and the condition (A) is true.
• the condition (A) is that the playback apparatus has the capability to play the primary audio stream specified by PSR1, and is determined by comparing PSR15 and Stream_codeig_type of the primary audio stream. If X satisfies this condition, set X in PSR1 (step S21).
• X is larger than the number of entries, or if the condition (A) is not satisfied, it is determined whether or not the X force is OxFF. If it is not OxFF, the primary audio stream number that the user intends to select is considered invalid, so the value X based on the user operation is ignored and the set value of PSR1 is maintained (step S23).
• step S24 If the set value of PSR1 is OxFF, set PSR1 (step S24).
• the processing procedure in step S24 is the same as the processing procedure shown in FIG. 30 (in FIG. 30, the determination in step S9 is not necessary in Procedure when Stream change is requested. Because P rocedure when Stream change is requested ⁇ : is the condition (a), (b), and (c), and the quotient is 7. Primary age ⁇ Diostream force If no S1 exists, the value X set by the user is not set to PSR1, but PSR1 This is because the value is maintained.) 0 [0147] Detailed Functional Configuration Part 3.Procedure Execution Unit 43>
• the Procedure Execution Unit 43 executes a predetermined procedure when a change from one Playltem information to another Playltem information occurs or when an operation for switching the stream number is performed by the user, Write the stream number. Since the playback device plays back the secondary audio stream corresponding to the stream number written in the PSR14, the secondary audio stream is selected through the powerful PSR14 setting.
• FIG. 32 (a) is a diagram showing state transitions that can be taken by the setting value of PSR14.
• V alid means that the value of PSR14 is equal to or less than the number of entries described in STN_table of Play Item and can be decoded.
• Invalid is a force whose PSR14 value is 0, or a force with a number exceeding the number of entries described in the Play Item STN_table, or the number of entries described in the Play Item STN_table. Even if it is a value of force ⁇ 32, it can't be decoded! /.
• the broken line frame in Fig. 32 (a) schematically shows the procedure for determining the PSR value at the time of state transition.
• PSR setting processing procedure “Procedure when playback condition is changed” and “Procedure when Stream change is requested” are emphasized.
• “Procedure when Stream Change is requested” indicates the processing procedure to be executed when the user requests a change (stream in FIG. 32).
• Procedure when Stream change is requested is a stream selection procedure, which will be described in detail later with a flow chart.
• arrows in Fig. 32 (a) symbolically indicate the state transitions between the states that the PSR can take.
• Load Disc means an event that the BD-ROM is loaded on the playback device.
• PSR14 is set to an indefinite value (OxFF) during powerful loading.
• Start PlayList playback means an event that playback processing based on PL has started. Powerful event; when 0 occurs, it can be seen that Procedure when playback condition is changed and PSR14 is set to Valid.
• Terminate PlayList playback means an event that the playback processing based on PL has ended. When a powerful event occurs, Procedure when playback condition is changed is not executed, and it turns out that it shifts to Invalid! /.
• “ChangeXXX” means an event that a user requests to switch XXX (Stream in this figure). If PSR14 is Invalid and a recurring event occurs (cjl in the figure), PSR14 is set to the required value. Even if the value set in this way indicates a valid stream number, the set value in PSR14 is treated as an invalid value. In other words, the state transition due to the event “ChangeXXX” does not change to the PSR force Valid which is Invalid.
• Crossing a Play boundary boundary or Change Primary Audio Stream means an event of Play Item boundary passing or switching of the Primary audio stream. If PSR14 is valid and a strong event occurs, the Procedure when playback condition is changed force is executed; After executing “Procedure when playback condition is changed”, the PSR 14 state will return to Valid, “Cross a Play boundary boundary or Change Primary Audio Stream”)). The purpose of this state transition is to execute “Procedure when playback condition is change” and set the optimal setting value for each Play Item in PSR14 every time Play Item playback starts or the primary audio stream switches.
• Step S31 is a determination of whether or not the number of entries in the STN_table is 0. If it is 0, the value of PSR14 is maintained (step S33).
• Step S32 determines whether the number of entries in PSR14 »STN_table is large and the conditions (A) and (B) are true when the number of entries in STN_table is not zero. .
• Condition (A) is that the playback device has the capability to play the secondary audio stream specified by PSR14.
• the condition (B) is that the combination of Primary_Audio_Stream_Number and Secondary.Audio_Stream_Number is permitted in STN_table! If step S32 force. If so, PSR14 is maintained (step S34). If yes, reset PSR14 (step S35).
• FIG. 33 is a flowchart showing the detailed processing procedure of step S35.
• Steps S36 and S37 form a loop process that repeats step S38 for all Secondary audio streams.
• each secondary audio stream to be processed is called a secondary audio stream i. .
• Step S38 checks whether the secondary audio stream satisfies the following conditions (a), (b), and (c).
• the condition (a) is that the playback device has the capability of playing the secondary audio stream i, and whether or not this is satisfied is determined by a register (PSR15) indicating the playback capability of the audio stream. And comparison with the stream_coding_type of the secondary audio stream i.
• Condition (b) is the ability to mix the primary audio stream into the secondary audio stream, and the judgment whether this condition is satisfied is set to PSR 1! This is done by determining whether the number is described in Comb_info_Secondary_audio_Primary_audio of the secondary audio stream.
• the condition (c) is that the language attribute of the secondary audio stream i is the same as the language setting of the playback device, and whether or not this is satisfied is determined by the secondary audio stream described in the STN_table. This is done by comparing whether i's Audio_language_code is the same as the PSR setting.
• this flowchart is based on the pattern of conditions to be satisfied, such as “how much and which power the secondary audio stream i satisfies” and “how many conditions are satisfied”. Give priority to the stream.
• Step S39 is a determination of whether or not there is a secondary audio stream that satisfies the conditions (a) and (b). If it does not exist, set the undefined value (OxFF) to PSR14 (step S44).
• Step S40 is a determination as to whether or not there is a secondary audio stream that satisfies all of the conditions (a), (b), and (c). If it exists, the secondary audio stream number that satisfies the conditions (a), (b), and (c) is set in PSR14 (step S45).
• step S45 STN_table The order in each stream is determined according to the entry order. That is, for a secondary audio stream having the same codec language attribute—channel attribute, the secondary audio stream with the earliest entry order in STN_table is selected.
• the authoring person can specify the selection control of which stream is preferentially reproduced and which stream is postponed at the time of authoring.
• Step S41 determines whether there is a secondary audio stream that satisfies all of the conditions (a), (b), and (c) and that there is a secondary audio stream that satisfies the conditions (a) and (b). is there. If there is a secondary audio stream satisfying the conditions (a) and (b), the one with the earliest entry order in STN_table is set in PSR14 (step S46).
• FIG. 34 is a flowchart showing the procedure for setting the PSR 14 when the stream changes. The difference between this flowchart and Fig. 32 (b) is that the notation of PSR14 in Fig. 32 (b) is replaced by X. This X is a value based on the User Operation information output from the operation accepting unit 26 and the button command output from the IG decoder 13.
• Step S49 in this flowchart is for determining whether the number of entries in the STN_table is larger than that of X and that the conditions (A) and (b) are true. If X satisfies this condition, X is set in PSR14 (step S51).
• step S52 If X is larger than the number of entries, or if the conditions (A) and (B) are not satisfied, it is determined whether X is OxFF (step S52). If it is not OxFF, the number of the secondary audio stream that the user intends to select is considered invalid, so the value X based on the user operation is ignored and the setting value of PSR14 is maintained (step S53).
• step S54 If the setting value of PSR14 is OxFF, PSR14 is set (step S54).
• the processing procedure of step S54 is the same as the processing procedure shown in FIG. 33 (in FIG. 33, the determination of step S39 is not necessary in Procedure when Stream change is requested. Why In Procedure when Stream change is requested, if there is no secondary audio stream power Si that satisfies conditions (a), (b), and (c), the value X set by the user is not set in PSR14, but the set value in PSR14 is maintained. It is the power to do. ) o
• the mixing control unit 44 When the Player Profile information is OOOlh or 001 lh, the mixing control unit 44 performs secondary audio stream playback output or sound data playback output for the primary audio stream playback output.
• the mixer 9a and the mixer 9b are controlled so as to perform mixing.
• the mixing control unit 44 mixes the playback output of the audio decoder 7b with the playback output of the audio decoder 7a. Control the mixer 9a.
• the demultiplexer 3b takes in the TS packet transferred to the bus lb, and refers to the upper byte of the PID, thereby converting the TS packet into the secondary audio stream. Can be put into a decoder for As a result, the demultiplexer 3b can demultiplex only the PES packets that make up the Secondary audio stream, and can import them into a decoder other than the decoder for the Primary audio stream.
• the packets that make up the Primary audio stream and the packets that make up the Secondary audio stream can be taken into different decoders and supplied to the decoding, so that only the packets that make up the Primary audio stream can be down-converted or downloaded. Mixing can be performed and gain can be lowered. Even if the secondary audio stream is read from the local storage 200 and supplied to the two decoders while reading from the BD-ROM 100, special processing is performed in real time only for the packets that make up the Primary audio stream. be able to.
• the second embodiment is an embodiment relating to selection of a device that should decode a primary audio stream, which is the power to decode the primary audio stream in any of the playback device 300 and the AV amplifier 500 in the home theater system. is there.
• FIG. 35 (a) is a diagram showing a connection form of the playback device 300, the AV amplifier 500, and the speaker 600.
• the connection configuration in the home theater system includes a configuration in which the playback device 300 is directly connected to the speaker 600 without using the AV amplifier 500 (connection configuration (1)), and a configuration in which the playback device 300 is connected to the speaker 600 through the AV amplifier 500 (connection configuration). There is (2).
• connection mode (1) the LPCM obtained by decoding of the playback device 300 is supplied to the speaker 600.
• the playback device 300 only performs pass-through output, and the LPCM obtained by decoding of the AV amplifier 500 is supplied to the speaker 600.
• FIG. 35 (b) is a diagram showing how the number of channels changes in each of playback apparatus 300, AV amplifier 500, and speaker 600.
• the first level in the figure shows each of the BD-ROM 100, the playback device 300, the AV amplifier 500, and the speaker 600.
• the decoding capability of these devices can be up to 300 lch of the playback device, the AV amplifier 500 can be up to 7. lch, and the speaker 600 can be 7. lch.
• Stages 2 to 4 show how downmixing is performed on these devices when 7.1ch and 5.lch Primary audio streams exist on BD-ROM100. Indicates.
• the second level shows a case where the Primary audio stream having the 7.1ch attribute exists on the BD-ROM 100 and is decoded by the playback device 300.
• the playback device 300 decodes the 7.1ch Primary audio stream read from the BD-ROM 100, and outputs LPCM downmixed to 5.lch.
• the AV amplifier 500 outputs 5.1 (* ⁇ ⁇ 1 to 7.1 (; 11) and outputs it to the speaker 600.
• the third row shows the case where a 5. lch Primary audio stream is recorded on BD-ROM100.
• the playback apparatus 300 decodes the 5.1ch Primary audio stream, and outputs LPCM to the AV amplifier 500 without downmixing.
• the AV amplifier 500 converts the 5.1ch audio output into 7.1ch and outputs it to the speaker 600.
• the fourth level shows a case where 7.1ch is recorded on the BD-ROM 100, and the playback device 300 outputs this pass-through.
• decoding is performed by the AV amplifier 500, and the audio is output to the 7.1ch audio power speaker 600 obtained by the decoding by the AV amplifier 500.
• FIG. 36 (a) is a diagram showing DIB.
• DIB is “Coding Type” indicating the encoding method that can be output to AV amplifier 500, “Channel Count” indicating the number of channels that can be decoded by the connected device, and speaker. It consists of “Channle / Speaker Allocation” indicating the arrangement, and “Sample FrenquencyJ indicating the frequency that can be reproduced on the connected device.
• Figure 36 (b) shows the values that can be set in each field of the DIB.
• CODING TYPE indicates which of DTS-HD, MLP, DD +, etc. the encoding method that can be decoded by the connected device. “The actual description in CODING TYP EJ is made using the four parameters CT0, CT1, CT2, and CT3.“ Channel CountJ indicates the number of channels that can be decoded, such as 7.1ch, 5.1ch, and 2ch.
• “Channel / Speaker Allocation is 5. lch stereo arrangement“ L / R / C / LS / RS / LF E ”, 7.1 (* stereo arrangement“ Shi / 1? / Ji / 1 ⁇ / 13 ⁇ 4 / 1 ⁇ / 1 ⁇ / 1 ⁇ 3 ⁇ 4 ”, 2 (; Indicates the physical arrangement information of the speaker such as“ L / R ”which is 11 stereo arrangements.
• Sample FrenquencyJ indicates a sampling frequency such as “48 KHz”, “192 KHz”, “96 KHz”.
• Fig. 36 (c) shows the communication sequence between the playback device 300 and AV amplifier 500 using DIB.
• the HDMI transmission / reception unit 27 of the playback device 300 When connected to the AV amplifier 500, the HDMI transmission / reception unit 27 of the playback device 300 performs mutual authentication as shown in ⁇ 1, and then the HDMI transmission / reception unit 27 of the playback device 300 is connected to the AV amplifier 500 side that serves as a receiver. Receive DIB as shown in ⁇ 2. If the DIB received in this way has the ability to decode the primary audio stream on the AV amplifier 500 side, the primary audio stream is passed through and output as shown in ⁇ 3. be able to. AV amplifier 500 side, this is the primary audio stream decoding Without the ability to record, the ability to transfer the LPCM decoded by the playback device will not be able to be played back.
• FIG. 37 is a diagram showing an internal configuration of the PSR 15 in the PSR set 23. As shown in FIG. 37
• PSR15 has a bit length of 32 bits, similar to PSR1, PSR14, and PSR31 shown in the first embodiment.
• Bits b0 to b3 of PSR15 indicate whether or not the playback device has the capability to decode and play back the LPCM audio stream. If these 4 bits are 0001b, it indicates that the playback device is capable of playing a 48 / 96HZ LPCM audio stream with stereo attributes. If these 4 bits are 0010b, it indicates that the playback device is capable of playing 48/96 Hz LPCM audio streams with surround attributes. If these 4 bits are 0101b, it indicates that the playback device has the ability to play LPCM audio streams of all frequencies with stereo attributes. If these 4 bits are 0110b, it indicates that the playback device has the capability to play back LPCM audio streams of all frequencies with surround attributes.
• Bits b4 to b7 of PSR15 indicate whether or not the playback device has the capability to decode and play back the DD / DD + format audio stream.
• This 4-bit low-order 2-bit power lb indicates that the playback device has the ability to play up to 2ch stream of basic data (independent substrain) of DD / DD + audio stream. If the lower 2 bits of these 4 bits are 10b, it means that the playback device has the ability to play multi-channel streams (streams with more than 2 ch) of basic data (independent substrain) of DD / DD + audio stream. Show.
• the DD / DD + audio stream extension data (Dependent indicates that the playback device does not have the ability to play substram).
• Bits b8 to bll of PSR15 indicate whether or not the playback device has the capability to decode and play back an audio stream in DTS-HD format. If the lower 2 bits of these 4 bits are 01b, it indicates that the playback device has the ability to play up to 2ch of the basic data (Core substram) of the DTS-HD audio stream. If the lower 2 bits of these 4 bits are 10b, it indicates that the playback device has the ability to play the multi-channel of the basic data (Core substram) of the DTS-HD audio stream.
• the upper 2 bits of these 4 bits are 01b, it indicates that the extension data of the DTS-HD audio stream (the ability to play up to 2ch of the Ex tension substram exists in the playback device.
• the upper 2 bits of these 4 bits Is 10b, the ability to play multi-channel of DTS-HD audio stream extension data (Extension substram) If the upper 2 bits indicating that it exists in the playback device is 00b, the extension data of DTS-HD audio stream This indicates that the playback device does not have the ability to play (Extensio n substram).
• Bit bl2 to bit bl5 of PSR15 indicate whether or not the playback device has the capability to decode and play back the DD / MLP format audio stream.
• This 4-bit low-order 2 bits lb indicates that it exists in a playback device capable of playing up to 2 channels of DD audio stream. If the lower 2 bits of this 4 bits are 10b, it indicates that the playback device has the ability to play the multi-channel of the DD audio stream.
• the PSR 15 can specify whether or not each coding method has the ability to process basic data and extension data.
• 2ch in the description of PSR15 means 2ch of L / R. Since the PSR 15 is defined in this way, the controller 22 that works in the second embodiment performs playback control of the Primary audio stream according to the flowchart of FIG.
• FIG. 38 is a flowchart showing the processing procedure of the controller 22 that is relevant to the second embodiment.
• Step S61 is an activation wait determination as to whether or not the device has been activated. If activated, the device of the connection partner is authenticated via HDMI (step S62). If the mutual validity is found by this authentication, the process proceeds to step S63.
• Step S63 is a reception wait loop as to whether or not a DIB has been received.If a DIB is received (yes in step S63), the connection partner's capabilities and the number of speakers (arrangement) are determined by the DIB received from the connection partner. ) Is recognized (step S64).
• Step S65 is a determination as to whether or not the connection partner has playback capability. If playback capability exists, a menu for accepting the setting of whether or not to perform pass-through output is displayed (step S67). ), It is determined whether or not the user desires a pass-through output (step S68).
• the pass-through setting is set so that the device automatically decodes it without allowing the user to set it. (YES in S68) may be performed.
• the pass-through setting (YES in S68) is set in advance. May be.
• FIG. 39 and FIG. 40 are diagrams showing menus for accepting the setting of whether to perform pass-through output.
• the menus in these figures show that “Your theater system can perform audio decoding on the connected device” and “Audio decoding on the connected device xxxx”, resulting in higher-quality audio.
• the message includes a message to call attention such as "You can enjoy”, and buttons "Yes” and "No” that accept the decoding instruction on the connected device.
• the product name and model number of the AV amplifier 500 are displayed in the XXX part. Further, in addition to the AV amplifier 500, the product name and model number of the television 400 may be displayed in the XXX portion, and these may be selected according to the user operation. In this way, the user may select a device to be decoded. In addition, many users If you have an amplifier, it is desirable to display these product names and model numbers and select them according to user operations.
• step S71 the player capability for audio in PSR15 is set according to DIB (step S71). Then, the procedure execution unit 42 is caused to execute a procedure for selecting a primary audio stream according to the decoding capability of the AV amplifier 500 (step S 72). Thereafter, the primary audio stream of the AVClip read from the BD-ROM is output as a single noise (step S73).
• 41 and 42 are flowcharts showing a processing procedure for setting Player capability for Audio in PSR15 according to DIB.
• step S200 indicates whether or not the DIB CODING TYPE force DD + is indicated.
• Step S201 is a determination as to whether or not a value larger than 2 is written in the Channel Count of the DIB. If step S201 is yes, in step S203, the capability of Dependent Substream is set to 10b: Surround and apable.
• step S201 If step S201 is no, in step S205, the Capability of Dependent Substream, 01b: Stereo Capable [this! I decide.
• step S82 determines whether or not the DIB CODING TYPE force MLP is indicated. If the DIB CODING TYPE indicates MLP, step S82 becomes yes and the process moves to step S91. Step S91 is a determination as to whether or not the DIB Channel Count is greater than 2ch.
• step S91 If step S91 is YES, in step S93, the MLP capability is set to 10b: Surround Capable. If step S91 is NO, in step S94, Set the MLP capability to 01b: Stereo Capable.
• the DIB Channel Count was used, but it may be determined by using Channel / Speaker Allocation.
• the capability of the connection partner is acquired via the digital I / F like HDMI, and the PSR15 is set according to the acquired capability. Since the primary stream is selected from the BD-ROM disk / local storage and the no-through output of the primary stream is performed, the decoder resources of the connection partner can be used effectively, and the effective use High-quality audio playback can be realized. Also, AV amplifiers and speakers are often developed / sold as a set, so the AV amplifier can be adjusted to the characteristics of the speakers. Therefore, even when the playback device can be decoded by the internal decoder, it is possible to obtain an acoustically high-quality playback result by decoding with the connected AV amplifier.
• the local storage 200 in the first embodiment is a playback device built-in type hard disk, but the local storage 200 in this embodiment is an SD memory card which is a portable recording medium.
• the present embodiment relates to an improvement in a case where a dynamic scenario is recorded on the portable recording medium and provided to a playback apparatus.
• An SD memory card is a portable recording medium having a secure area and a non-secure area.
• the file on the local storage as shown in the first embodiment is encrypted and recorded in the non-secure area, and the encryption key is recorded in the secure area.
• the encryption key recorded in the secure area will not be read unless the validity is confirmed by authentication with the SD memory card.
• files on the non-secure area will be read only when used together with a BD-ROM that is not copied illegally.
• a dynamic scenario is the Java application and Movie Object shown in the first embodiment, and is a program that causes a playback device to perform playback through PlayList information.
• Such a dynamic scenario may be recorded on the BD-ROM 100 or recorded on the local storage 200.
• the recording medium is recorded on the recording medium.
• the recorded dynamic scenario is provided to playback devices installed at various locations. Time In some cases, it may be used in a regenerator 300 installed in a car.
• FIG. 43 (a) is a diagram showing a playback device 300 installed in a car.
• a playback device 300 which forms a car audio system together with the television 400, may be introduced into the powerful playback device 300 together with the BD-ROM 100.
• the powerful playback device 300 when installed in a car, it is desirable to make clear that the powerful playback device 300 is operated like a CD playback device.
• the PSR 31 that works for this embodiment indicating that it should be operated like a CD playback device is configured as shown in FIG. 43 (b).
• FIG. 43 (b) is a diagram showing an internal configuration of the PSR 31 that is helpful in the third embodiment.
• Player Profile Information Power OOOb in PSR31 this indicates that the playback device is an Audio Profile Player.
• Audio Profile Player is not suitable for operations via interactive screens. It is a CD player-like (BD-ROM playback device that controls playback of content only by linear operations such as a CD playback device. This means that the playback device does not support content playback control by, or a playback device that senses that the car is running and temporarily transitions to such a mode.
• the playback device is a CD player-like device
• the content must be played back using chapter-based operations such as chapter skip and chapter search.
• chapter-based operations such as chapter skip and chapter search.
• Such a chapter is defined in the PlayListMark information shown in FIG.
• FIG. 44 shows the internal structure of PlayListMark information in PlayList information.
• the PlayListMark information is composed of a plurality of PLMark information (# 1 to #n).
• PLmark information (PLmarkO) is information for designating an arbitrary position on the PL time axis as a single chapter.
• the PLmark information includes “ref_to_PlayItem_Id” indicating the Playltem that is the target of the chapter designation, and “mark_time_stamp” indicating the chapter position in the Playltem in time notation.
• FIG. 45 is a diagram showing specification of the chapter position by the PLMark information in the PlayList information.
• the second to fifth tiers in this figure show the EPjnap and AVClip shown in FIG.
• the first level in the figure shows PLMark information and the PL time axis.
• Arrow ktl, 2 indicates the specification by ref_to_PlayItem_Id of PLMark information.
• the remark o_PlayItem_Id in the PLMark information specifies the Playltem to be referenced.
• Mark_time_Stamp indicates the point in time of Chapter #l, # 2 on the Playltem time axis. In this way, PLMark information can define chapter points on the Playltem time axis.
• FIG. 46 is a flowchart showing the processing procedure of the Java application according to this embodiment.
• step S149 it is determined whether or not the PSR 31 is an audio profile player. If it is not Audi Audio Profile Player, playback of the playlist is started (step S150). Thereafter, the process proceeds to the loop process of step S151.
• step S151 constitutes an operation waiting loop process for determining whether or not a menu call operation has been performed. If a menu call is made, display the menu (step S 152), the process proceeds to step S153 to step S156.
• Step S153 is a determination as to whether or not a focus movement operation has been performed. If a focus movement operation has been performed, the focus is moved to another button (step S155).
• Step S154 is a determination of whether or not a button has been confirmed. If a confirm operation has been performed, a process corresponding to the button is executed (step S156).
• step SI If it is determined in step S149 that it is an audio profile player (step SI).
• step S158 Explain the D-like playback. Then, the process proceeds to a loop process consisting of step S158 and step S159.
• Step S158 is a determination as to whether or not a numerical value has been input.
• Step S159 is a determination as to whether or not a SkipNext or Skip Back key has been performed.
• step S160 If a numerical value has been entered, the process moves to step S160 and a chapter search is executed.
• SkioNext, SkipBack key is pressed, the process moves to step S161 and the chapter skip function is executed.
• Step S153 to Step S155 is performed by the navigation command or Movie in the IG stream.
• Figure 47 is a flowchart showing the chapter search processing procedure.
• PLMark information corresponding to the input numerical value is set as a current PlayListMark (step S125).
• step S126 PI described in re_oPlayItem_Id of the current PlayListMark is set in Playltemfe, and in step S127, Clip information specified by Clipjnformation_file_name of Playltemfe is read.
• step S128 the mark_time_stamp of the current PlayListMark is converted to the I picture address u using the EPjnap of the current Clip information.
• step S129 Playutemfe's OuUime is used and EPjnap of the current Clip information is used. And converted to I picture address v.
• Step S130 commands the decoder to output from mark_time_stamp of the current PlayListMark to OuUime of Playfemfe.
• FIG. 48 is a flowchart showing the chapter skip processing procedure.
• Step S132 determines whether the pressed key is a SkipNext key or a SkipBack key. If it is a SkipBack key, the direction flag is set to -1 in Step S133. In step S134, the direction flag is set to +1.
• Step S135 is a step of identifying the current PLMark by converting the current PI and current PTM.
• Step S136 sets the number of the current PLMark plus the value of the direction flag as the number of the current PlayListMark. .
• the direction flag is set to +1, so the current PlayListMark is incremented.
• the direction flag is set to -1, so the current PlayListMark will be decremented. If the PLMark information is set in this way, TS packet reading is performed by executing the processing procedure from step S 126 to step S 130 as in FIG.
• the above is the processing procedure of the playback device when performing playback based on PLMark information.
• the playlist is provided so as to give the user operability equivalent to that of the CD playback device in a dynamic scenario such as a Movie Object or Java application. It will be possible to play.
• the user can operate the BD-ROM just like a music CD.
• chapter search / skip corresponds to the search / skip of a song in the music CD.
• interactive playback is possible by displaying GUI-based menus and the like assuming video output as before.
• the monitor plays back by monitoring the power on / off status of the monitor and the input source video selection status. If the current video is no longer displayed, the PSR 31 may be switched to the Audio Profile Player, playback may be paused, or the playback device 300 may be turned off in conjunction with the power. [0215] (Fourth embodiment)
• the fourth embodiment is an embodiment regarding acquisition of how to acquire the PlayList information, Clip information, and AVClip shown in the first embodiment.
• the main processing element is a Java application. This is because Java applications have the ability to form connections on the network, and server devices can download the desired files.
• a connection to get a file that exists on the server can be established using the openConnection method of the Java software library called java.net.
• An example of connection is shown below when the URL power of the file on the server is http: ZZxxx.comZvp_dataZ0.m2ts.
• FIG. 49 is a flowchart of the Java application according to the fourth embodiment.
• step S181 playback of the playlist on the BD-ROM is started.
• step S182 the BD-ROM force, etc., read the information (organization) indicating the corporation or organization that is the distribution source of the BD-ROM, and the identifier (Discjd) of the BD-ROM.
• step S183 it is determined whether or not an area corresponding to the organization Discjd read out in this manner does not exist in the local storage 200.
• step S184 If there is no area to be used, it is determined in step S184 whether the Player Profile information power 0x0000 in PSR31 is not reached.
• Step S183 and Step S184 are No, the process ends.
• step S183 and step S184 force yes.
• a menu in which an “update button” is arranged is displayed (step S185). Then, it waits for a confirmation operation for the “update button” (step S 186).
• FIG. 50 is a diagram showing a display example of a menu in which an “update button” is arranged.
• the button force “Update” is described as “Update”. If an operation for confirming this “update button” is performed, Disc_id and PlayListjd are transmitted to the server device in step S187.
• Discjd is the identification information of the BD-ROM
• PlayListjd is the identification information of the playlist being played back
• the server device also uses these to select the additional content to be acquired from the content provider's database.
• the selected additional content is sent back to the playback device via the network.
• This additional content includes a set of files (PlayList information, Clip information, AVClip) to be recorded in the local storage 200.
• step S188 reception of additional content is waited. If these are received, in step S189, PlayList information, Clip information, and AVClip constituting the additional content are written in the local storage 200. After that, when the download from the server device is completed and playback while mixing is possible, the user is notified that playback while mixing is possible (step S190). A processing wait loop for determining whether or not the user has performed an operation to perform mixing is set (step S191). If the user wishes, playback of the PlayList information is stopped at once in step S192, and a virtual package is constructed.
• download processing is performed while playing an AVClip, so that the user can access the local storage 200 while viewing the playback image of the playlist.
• the file capacity on the local storage 200 that constitutes a secondary audio stream that waits for the download completion of the file Even if it reaches several hundred megabytes, the Don't be bored.
• conditions for erasing the additional content on the local storage 200 are initially set in the playback device 300, and the playback device 300 deletes the additional content based on this initial setting. You may make it remove
• the user may be inquired about whether or not to delete the additional content on the local storage 200, and may be deleted when the user gives a positive response to the inquiry.
• the stream jd in the PES packet header be different.
• the primary audio stream and the secondary audio stream only need to be distinguished at the system stream level so that the two audio streams can be distinguished by one demultiplexer. Or just bundle the two PIDs so that they don't overlap before bundling the two streams together!
• the program according to the present invention is an executable program (object program) that can be executed by a computer.
• object program an executable program
• Each step of the flowchart shown in each embodiment and each procedure of functional components are stored in the computer.
• Consists of one or more program codes to be executed there are various kinds of program codes such as a processor native code and JAVA (registered trademark) bytecode.
• program codes such as a processor native code and JAVA (registered trademark) bytecode.
• There are various modes for realizing each step by the program code If each step can be realized by using an external function, it becomes a call program code that calls this external function. Also, the program code power to realize one step may belong to different object programs. In RISC processors, where instruction types are restricted, each step of the flowchart may be realized by combining arithmetic, logical, and branch instructions.
• a program that can be used in the present invention can be created as follows. First, the software developer uses a programming language to write a source program that implements each flowchart and functional components. In this description, the software developer uses a class structure, variables, array variables, and external function calls according to the syntax of the programming language to describe each flowchart and source program that implements functional components.
• the described source program is given to the compiler as a file.
• the compiler translates these source programs to generate an object program.
• Translation by the compiler consists of processes such as syntax analysis, optimization, resource allocation, and code generation.
• syntax analysis lexical analysis, syntax analysis, and semantic analysis of the source program are performed, and the source program is converted into an intermediate program.
• the intermediate program is divided into basic blocks, control flow analysis, and data flow analysis.
• resource allocation in order to adapt to the instruction set of the target processor, the variables in the intermediate program are stored in registers or memory held by the processor of the target processor. Assign to.
• code generation each intermediate instruction in the intermediate program is converted into program code to obtain an object program.
• the programmer activates the linker for these.
• the linker allocates these object programs and related library programs in the memory space, and combines them into one to generate a load module.
• the load module generated in this way is premised on reading by a computer, and causes the computer to execute the processing procedure shown in each flowchart and the processing procedure of functional components.
• the program according to the present invention can be created through the above processing.
• the program according to the present invention can be used as follows.
• the load module corresponding to the program is written in the instruction ROM together with the basic input / output program (BIOS) and various middleware (operation system).
• the program according to the present invention can be used as a control program for the playback apparatus 300 by incorporating such an instruction ROM into the control unit and causing the CPU to execute it.
• the playback device 300 When the playback device 300 is a model with a built-in hard disk, a basic input / output program (BIOS) is embedded in the instruction ROM, and is preinstalled on various middleware (operation system) 1S hard disks. Also, it is provided in the boot ROM power playback device 300 for booting the system from the hard disk!
• BIOS basic input / output program
• the playback device 300 performs bootstrap using the boot ROM, starts the operation system, causes the CPU to execute the application as one application, and uses the program according to the present invention.
• the program of the present invention is applied to one application. Since it can be used as a Chillon, the program according to the present invention can be transferred alone, lent, or supplied through a network.
• the components such as the controller 22 shown in each embodiment can be realized as one system LSI.
• a system LSI is a device in which a bare chip is mounted on a high-density substrate and packaged.
• a system LSI that includes multiple bare chips mounted on a high-density substrate and knocked to give the bare chip the same external structure as a single LSI is also included in the system LSI.
• uch a system LSI is called a multichip module;).
• system LSI types such as QFP (tad flood array) and PGA (pin grid array).
• QFP is a system LSI with pins attached to the four sides of the package.
• a PGA is a system LSI with many pins attached to the entire bottom surface.
• pins serve as interfaces with other circuits. Since pins in the system LSI have such an interface role, the system LSI plays a role as the core of the playback device 300 by connecting other circuits to these pins in the system LSI.
• the bare chip packaged in the system LSI consists of a "front end part", a “backend part”, and a "digital processing part".
• the “front-end part” is the part that digitizes the analog signal
• the “back-end part” is the part that outputs the data obtained as a result of the digital processing.
• Each component shown as an internal configuration diagram in each embodiment is mounted in this digital processing unit.
• the load module As described earlier in “Use as embedded program”, the load module, basic input / output program (BIOS), and various middleware (operation system) are written in the instruction ROM.
• the part of the load module corresponding to this program was created in particular. Therefore, the instruction ROM storing the load module corresponding to the program is packaged as a bare chip. System LSI can be produced.
• SoC System on chip
• SiP System in Package
• the integrated circuit generated as described above is sometimes called an IC, LSI, super-LSI, or unroller LSI depending on the degree of integration.
• each recording / reading apparatus may be configured as one chip.
• Integrated circuit implementation is not limited to the above-described SoC implementation and SiP implementation, and may be realized by a dedicated circuit or a general-purpose process. It is conceivable to use a Field Programmable Gate Array (FPGA) that can be programmed after manufacturing the LSI, or a silicon figureable 'processor that can reconfigure the connection and settings of the circuit cells inside the LSI.
• FPGA Field Programmable Gate Array
• a silicon figureable 'processor that can reconfigure the connection and settings of the circuit cells inside the LSI.
• integrated circuit technology that replaces LSI emerges as a result of advances in semiconductor technology or derived technologies, it is natural that functional blocks may be integrated using that technology. For example, biotechnology can be applied.
• the playback device according to the present invention has an internal configuration disclosed in the above embodiment, and is apparently mass-produced based on this internal configuration, so that it can be industrially utilized in qualities. Therefore, the playback apparatus according to the present invention has industrial applicability.

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• Signal Processing For Digital Recording And Reproducing (AREA)
• Television Signal Processing For Recording (AREA)
• Management Or Editing Of Information On Record Carriers (AREA)
• Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
• Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

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