WO1998009290A1 - Commande de lecture dans des lecteurs de video disques numeriques - Google Patents

Commande de lecture dans des lecteurs de video disques numeriques Download PDF

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Publication number
WO1998009290A1
WO1998009290A1 PCT/IB1996/000875 IB9600875W WO9809290A1 WO 1998009290 A1 WO1998009290 A1 WO 1998009290A1 IB 9600875 W IB9600875 W IB 9600875W WO 9809290 A1 WO9809290 A1 WO 9809290A1
Authority
WO
WIPO (PCT)
Prior art keywords
list
control
play
record carrier
audio
Prior art date
Application number
PCT/IB1996/000875
Other languages
English (en)
Inventor
David Edward Penna
Simon Blanchard
Andrew Paul Maxfield
Original Assignee
Philips Electronics N.V.
Philips Norden Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Electronics N.V., Philips Norden Ab filed Critical Philips Electronics N.V.
Priority to PCT/IB1996/000875 priority Critical patent/WO1998009290A1/fr
Publication of WO1998009290A1 publication Critical patent/WO1998009290A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/022—Control panels
    • 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
    • G11B27/002—Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing
    • 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
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • 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
    • G11B27/34—Indicating arrangements 
    • 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
    • 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
    • G11B2220/2545—CDs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs

Definitions

  • the invention relates to an apparatus capable of reproducing audio and/or video and/or data information from a record carrier, on which the information has been stored in digital form and is directly accessible, the apparatus being provided with control means for enabling the user to select and control a presentation of an audio/video program to be read from the record carrier to be or being read by said apparatus, which control means comprise a computer program controlled processor and the computer program comprises at least a first and a second control structure, of which the first structure defines play items of audio/video data that are playable in sequence and the second structure defines at least branching in the sequence of play items upon user input control.
  • the invention relates furthermore to a record carrier storing audio and/or video and control data, which control data enable playback control of the audio/video data wherein the control data are organized in a playback control mechanism, which comprises at least two control structures, of which a first structure defines play items of audio/video data that are playable in sequence and a second structure defines at least branching in the sequence of play items upon user input control.
  • a playback apparatus such as an optical disc player and a record carrier such as an optically readable disc storing audio/video information are well known in the prior art under the names Video CD Player and Video CD Disc respectively.
  • the Video CD Player comprises control means, which upon certain user command input reads control data from the Video CD Disc so as to realize functions such as "Playback”, “NEXT”, “PREVIOUS”, “RETURN”, “STOP” and controls playback of the relevant desired audio/video information accordingly.
  • the playback control of the Video CD System enables adequate playback control of the Video CD Discs the complexity of it increases if the number of play items that are added together so as to create a long uninterrupted sequence of display items, which are to be displayed.
  • An optical disc player in accordance with the invention is characterized in that the first structure comprises a play list per single play item, which play list includes a seamless continus flag, which, if set, indicates that the end of the play item on the record carrier the next play item starts in the next sector of the record carrier, and that at least one of further control structures is provided, which is selected from the control structures: Regioned Play List, Statement List, Conditional List, Control List, Set Stream ID List, Enable Stream ID List, Change Volume List.
  • An optical readable disc in accordance with the invention is characterized in that the first structure comprises a play list per single play item, which play list includes a seamless continus flag, which, if set, indicates that the end of the play item on the record carrier the next play item starts in the next sector of the record carrier, and that at least one of further control structures is provided, which is selected from the control structures: Regioned Play List, Statement List, Conditional List, Control List, Set Stream ID List, Enable Stream ID List, Change Volume List.
  • This record carrier has the advantage that the record carrier enables seamless continuous play of successive items and the branching mechanism of the second structure can be simplified due to the fact that a play list comprises a single play item, said play list needs just to include one single offset data to find each time the list to execute the previous Next or Return function respectively upon the user command inputs: Previous, Next or Return respectively.
  • FIG. 1 shows an embodiment of an apparatus in accordance with the invention
  • Figures 2a and 2b show the syntax of a first control structure: the Play List;
  • Figures 3a and 3b show the syntax of a control structure kindlike to the first control structure: the Regioned Play List;
  • Figures 4a and 4b show the syntax of a second control structure: the
  • Figure 5 shows the syntax of the fourth control structure: the Statement List
  • Figure 6 shows the syntax of a fifth control structure the Conditional List
  • Figure 7 shows the syntax of the sixth control structure: the Control List
  • Figures 8a, b and c show two further control structures: the Set Stream ID List and the Enable Stream ID List;
  • Figure 9 shows another embodiment of a control structure: the Change
  • Figure 10 shows an embodiment of another control structure: the End List.
  • the system 10 comprises a record carrier 1 and a record player 3.
  • the record carrier 1 is e.g. an optical disc comprising digital audio/video/data information in an embossed information layer. This information is to be read out by use of an optical stylus 11 (known as such) which supplies the detected data to a decoding and error correcting means 13.
  • the decoded and error corrected data are supplied to a processor 15, which cooperates with a ROM memory 15a and a RAM memory 15b to control and operate on the data flow received from decoding and error correcting means 13.
  • a first task of the controller 15 is to provide control signals, such as velocity control tracking and focusing control signals to the servo system 16.
  • the servo system 16 controls the angular velocity ⁇ of the rotating disc 1 as well as the position of the optical stylus 11 with respect to the track of the optical disc 1 , which has been shown by the dotted arrow r. Further the servo system 16 controls the focusing of the optical stylus, such that the bright bundle emitted by the laser is focused on the information layer of the optical disc (which has been shown by the dotted arrow f)-
  • a second task of the processor 15 is to control the audio and video bit stream to the dedicated decoders 21, which decode the e.g. MPEG2 coded video and audio and supply the decoded video to a display 23 and the decoded audio to a speaker or speaker system 25 (e.g. a multi channel sound system).
  • the information to be reproduced by the display 23 and sound system 25 is selectable by user input, which is received e.g. by direct control of selection buttons 19 of the input means 17 of the optical disc player 3 or via a remote control device 17a having selection buttons 19a.
  • user input e.g. by direct control of selection buttons 19 of the input means 17 of the optical disc player 3 or via a remote control device 17a having selection buttons 19a.
  • the processor 15 of the shown embodiment can be a relatively low power microcontroller having 1 MIPS capacity. It is possible to have the video and audio MPEG2 decoding realised by a software controlled processor 15, which then should be a high speed high power process unit equipped with adequate amounts of RAM and ROM memory 15a and 15b.
  • the syntax of the first control structure: the Play- List has been shown in
  • the Play List describes a part of a program that is to be played and comprises pointers to other control structures (lists), that will be executed on user interaction and when the end of a Play Item of the Play List concerned is realised.
  • the semantics of the Play List are as follows: play_list_header: a one byte code that identifies the beginning of a Play List; prev_list_offset: offset to the list to execute on the "Previous” function; next_list_offset: offset to the list to execute on the "Next” function.
  • this field shall always contain a valid list offset; return_list_offset: offset to the list to execute on the "Return” function; wait_time: the time to wait at the end of the Play Item.
  • the numeric value of the Wait Time field is a measure for the number of seconds, during which a user can give input while the display item is displayed.
  • Sea less-Continue is a one bit flag and when set it indicates that at the end of the Play Item, a next Play Item is to be displayed immediately and is located in the sector after the current
  • the displayed image is divided preferably in three equal widths regions each of full picture height.
  • the regions are assigned to the functions "Previous”, “Return” and “Next” and preferably reading from left to right.
  • a pointing device upon being positioned due to user input via input device 17 or remote controller 17a in one of said regions and activated the appropriate function will be performed.
  • the Start Address is the logical sector address to start from so a to reproduce the information concerned.
  • the End Address is the logical sector address of the last sector in the Play Item.
  • the stopping STC will cause termination of the Play Item when the top 32 bits of the STC reach the value represented.
  • the Regioned Play List is the same as a Play List but with the addition of regions. These regions are used to define areas of the picture as hotspots for navigation functions upon user input. These areas are preferably of rectangular shape.
  • the Regioned Play List Semantics are the same as those for the Play List, but the additions show the following:
  • prev_region() an area on the screen representing a hotspot for the "Previous” function.
  • next_region() an area on the screen representing a hotspot for the "Next” function.
  • return_region() an area on the screen representing a hotspot for the "Return” function.
  • the Regions describe a rectangular area of the picture.
  • the top left hand corner of the picture has e.g. the co-ordinates (0,0).
  • the lower right hand corner of the picture has e.g. the co-ordinates (255,255).
  • Regions may overlap. In such situation the order in which regions appear in a list define their priority and the last region has preferably a higher priority than the first. If all fields in a region are set to zero, the region is inactive. If a list offset has the extreme value $FFFF its associated region shall be set to zero. If a list offset does not have the value SFFFF it associated region shall not be zero.
  • the syntax to define a region has been shown in Figure 3b.
  • the Region semantics are as follows:
  • top_left_x the top left hand X co-ordinate of the region.
  • top_left_y the top left hand Y co-ordinate of the region.
  • bottom_right_x the bottom right hand X co-ordinate of the region.
  • bottom_right_y the bottom right hand Y co-ordinate of the region.
  • Selection List A second control structure to cooperate with the Play List and Regioned Play List is the Selection List.
  • Selection Lists are used to offer choices to the user and to take action based on the user's input. For instance, Selection Lists can be used to implement menus.
  • the Selection List Syntax has been shown in Figure 4a.
  • the Selection List Semantics are as follows:
  • selection_list_header defines the start of a Selection List.
  • num_of_selections NOS: the total number of selections in the list.
  • prev_list_offset see Play List Semantics.
  • ⁇ next_list_offset see Play List Semantics.
  • J ( Figure 2a) return_list_offset: see Play List Semantics default_list_offset: offset to the list to execute on the "Default Selection" function.
  • timeout_list_offset offset to the list to execute if there has been no user interaction after all the iterations of the Play Item and after the time defined in the wait_time field. wait_time_: see Play List Semantics.
  • loop_count the number of times to loop the Play Item. Values for loop_count are any number between and including 0 and 63. Thereby the value 0 means: infinite wait which is used to obtain e.g. a mandatory input of the user.
  • play_item() see the definition of Play Item ( Figure 2b).
  • prev_region() a region of the picture representing a hotspot for the "Previous" function.
  • next_region() a region of the picture representing a hotspot for the "Next” function.
  • return_region() a region of the picture representing a hotspot for the "Return" function.
  • default_region() a region of the picture representing a hotspot for the "Default Selection” function.
  • selectionQ a selection option. This selection option is used to match user input, either in the form of numeric keypad selections or via a hotspots on the picture to a list.
  • the Selection Syntax has been shown in Figure 4b.
  • the Selection Semantics are as follows:
  • list offset offset to the list to execute when this selection is matched.
  • region() the hotspot for this selection (see e.g. Figure 3b).
  • a fourth control structure is the Statement List, which is used to operate on variables.
  • the Statement List Syntax is shown in Figure 5.
  • the Statement List Semantics are as follows: statement_list_header: identifies the start of a Statement List and the operation to be carried out on the operands.
  • operands the operands for the operation defined by statement_list_header.
  • next_list_offset offset to the next list to execute.
  • the variable to operate upon the Statement List are: user variables or system variables.
  • the system variables can be a.o. is shown in the subsequent List.
  • the System variables described the state of the playback system and provide a means to change that state.
  • the Default Country variable holds the ISO 3166 country code for the default country of the player. If the default country is unknown or undefined this variable shall be set to zero.
  • the Default Language variable holds the ISO639 code for the default language of the player. If the default language is unknown or undefined this variable shall be set to zero.
  • the Elementary Stream Status variables describe information about each type of elementary stream.
  • the Rating Status variable describes which rating definition levels, as defined in a disc Table of Content (TOC) have been enabled. The use of a TOC is known as such. When the Rating Status variable is set to one then this flag indicates that rating definition level is enabled for the player. If the enabled rating levels of the player are unknown or undefined this variable shall be set to zero.
  • the Player Capability variable describes the decoding capabilities of the player, such as: display_type(): describes the type of displays that the player is capable of supporting e.g. PAL of NTSC.
  • enhanced_subtitle when set to one this flag indicates the player is capable of decoding enhanced subtitle streams
  • simple_subtitle when set to one this flag indicates the place is capable of decoding simple subtitle streams
  • lpcm_audio when set to one this flag indicates the player is capable of decoding LPCM streams or that the player has a digital output for these streams
  • mpeg_multilingual-audio when set to one this flag indicates the player is capable of decoding MPEG-2 multi-lingual streams or that the player has a digital output for these streams
  • mpeg-extension-audio when set to one this flag indicates the player is capable of decoding MPEG-2 extension streams or that the player has a digital output for these streams.
  • the Calculation Status variable holds information about the result of the last arithmetic operation to be carried out by a Statement List. This result may be:
  • Conditional Lists offer an "if-then- else" type of construction. A condition is tested and either a true or false list is executed.
  • conditionaljist-header defines the start of a Conditional List and which type of condition to check
  • operands the operands for the condition as defined by conditional_list_header
  • true_list_offset offset to the list to execute if the condition is true
  • false_list_offset offset to the list to execute if the condition is false.
  • Control List is used to select stream identifications and to enable and disable stream decoding.
  • Control List Synntax is shown in Figure 7.
  • the Control List Semantics are as follows: controljist header: identifies the start of a Control List. next_list_offset: offset to the next list to execute; enhanced_subtitle: controls the decoding of enhanced subtitles; simple_subtitle: controls the decoding of simple subtitles; lpcm_audio: controls the decoding of LPCM audio; mpeg_multi_lingual: controls the decoding of MPEG-2 multi-lingual audio mpeg_multi_channel: controls the decoding of MPEG-2 multi-channel audio mpeg_base_audio: controls the decoding of MPEG base stream audio.
  • the meaning of the control byte for each elementary stream type can be: channel select,
  • a further control structure is the Set Stream ID List.
  • the Set Stream ID list is used to set the stream identification for an elementary stream from a variable.
  • Set_stream_id_list_header identifies the start of a Set Stream ID list and which type of stream to set.
  • the meanings of the values for this field can be as follows: Enhanced subtitle, Simple subtitle, LPCM audio, MPEG-2 multi-lingual audio, MPEG-2 extension audio or MPEG base audio.
  • variable d the variable to read the stream identification form; next_list_offset: the offset to the next list to execute.
  • a control structure to be used in combination with the Set Stream ID List is the Enable Stream ID list.
  • the Enable Stream ID List is used to set which streams are available for user selection.
  • the Enable Stream ID List Syntax is shown in Figure 8b.
  • the Enable Stream ID List Semantics is given herebelow: enable_stream_id_list_header: identifies the start of an Enable Stream ID list and which type of stream the enable map applies to. How this field identifies stream types is given in the subsequent list: Enhanced subtitle, Simple subtitle, LPCM audio, MPEG-2 multi-lingual audio, MPEG-2 extension audio; MPEG base audio.
  • next_list_offset offset to the next list to execute.
  • enable-map() bitmap of which streams to enable.
  • the Enable Map Syntax is shown in Figure 8c.
  • the Enable Map Semantics are as follows: enable_steam_s: enable decoding of stream s.
  • the Change Volume List is used to instruct the player to switch to another disc within the current album. Such is necessary if the volume of information exceeds the quantity of information that can be stored on a single disc.
  • the Change Volume List Syntax is shown in Figure 9.
  • the Change Volume List Semantics are as follows: change_volume_list_header: identifies the start of the Change Volume list.
  • loop_count number of times to loop the Play Item, which can be a number between and including 0 and 255. The number 0 means an indefinite number of loops.
  • prev_list_offset offset to the list to execute on the "Previous” function
  • return_list_offset offset to the list to execute on the "Return” function
  • next_disc_num sequence number of the destination disc within the album
  • next_disc_list_offset offset of the list to execute on the destination disc
  • play_item() this Play Item is played if the next disc is not found. This will happen in a single disc player or if the next disc is not in the tray of a multi-disc player.
  • a mandatory control structure is the End List.
  • the End List signals the end of the playback control.
  • the End List Syntax is shown in Figure 10.
  • the End List Semantics are as follows: end istjieader: identifies the start of an End List.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

Cette invention concerne un support d'enregistrement et un appareil pour reproduire des informations sonores/vidéo stockées sur ledit support d'enregistrement, qui grâce à des structures de commande stockées sur ledit disque et coopérant avec le mécanisme de commande de lecture permettent une commande et un affichage souples et interactifs des informations sonores/vidéo. La puissance de traitement du processeur associé à la commande de lecture est maintenue à un niveau restreint et la complexité des structures de commande est faible. Ces structures sont regroupées dans les listes suivantes: Lecture, Lecture de plage, Sélection, Instruction, Conditions, Commande et Variation de volume. Ces listes permettent une commande interactive, la création d'une boucle d'attente pour recevoir les entrées utilisateur, les actions ou les séquences implicites, l'opération sur des variables et des variables du système pour reproduire des informations sonores/vidéo dans certaines conditions de réglage du lecteur, telles que la lecture conditionnelle, le son multicanal, la sélection de la langue, l'électronique de sous-titrage.
PCT/IB1996/000875 1996-08-29 1996-08-29 Commande de lecture dans des lecteurs de video disques numeriques WO1998009290A1 (fr)

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PCT/IB1996/000875 WO1998009290A1 (fr) 1996-08-29 1996-08-29 Commande de lecture dans des lecteurs de video disques numeriques

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Cited By (13)

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EP0910088A2 (fr) * 1997-09-30 1999-04-21 Compaq Computer Corporation Schémas d'adaption pour la présentation de matières dans un dispositif avec une fonction convergente
EP0961277A1 (fr) * 1998-05-26 1999-12-01 Koninklijke Philips Electronics N.V. Support d'enregistrement, appareil et méthode
EP0961279A1 (fr) * 1998-05-26 1999-12-01 Koninklijke Philips Electronics N.V. Support d'enregistrement, appareil et méthode
EP0997910A1 (fr) * 1998-10-30 2000-05-03 Koninklijke Philips Electronics N.V. Appareil de reproduction d'information numérique enregistrée sur un disque optique
EP0997909A1 (fr) * 1998-10-30 2000-05-03 Koninklijke Philips Electronics N.V. Appareil de reproduction d'information numérique enregistrée sur un disque optique
US6219698B1 (en) 1997-12-19 2001-04-17 Compaq Computer Corporation Configuring client software using remote notification
WO2001035416A2 (fr) * 1999-11-10 2001-05-17 Koninklijke Philips Electronics N.V. Support d'enregistrement, dispositif et procede de lecture d'un support d'enregistrement, dispositif et procede d'enregistrement d'un support d'enregistrement
WO2001041144A1 (fr) * 1999-12-02 2001-06-07 Openglobe, Inc. Appareil, procede et base de donnees destines au controle d'equipements audio-video
EP1568028A1 (fr) * 2002-11-20 2005-08-31 Lg Electronics Inc. Support d'enregistrement a structure de donnees permettant de gerer la reproduction au moins de donnees video enregistrees sur ledit support et procedes et appareils d'enregistrement et de reproduction
EP1723640A2 (fr) * 2004-03-08 2006-11-22 Lg Electronics Inc. Procede et appareil de reproduction de chaines de texte de sous-titres
WO2007010481A2 (fr) * 2005-07-20 2007-01-25 Koninklijke Philips Electronics N.V. Presentation non lineaire d'un contenu
EP1758122A1 (fr) * 2004-06-18 2007-02-28 Matsushita Electric Industrial Co., Ltd. Dispositif de reproduction, programme, et procede de reproduction
EP1983522A3 (fr) * 1999-11-24 2012-04-11 Sony Corporation Appareil et procédé d'enregistrement/reproduction ainsi que support d'enregistrement

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EP0528425A2 (fr) * 1991-08-20 1993-02-24 Sony Corporation Milieu d'enregistrement d'information et appareil de reproduction d'information utilisable avec celui-ci
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