EP0317594A1 - Lecteur de disques compacts - Google Patents

Lecteur de disques compacts

Info

Publication number
EP0317594A1
EP0317594A1 EP88904538A EP88904538A EP0317594A1 EP 0317594 A1 EP0317594 A1 EP 0317594A1 EP 88904538 A EP88904538 A EP 88904538A EP 88904538 A EP88904538 A EP 88904538A EP 0317594 A1 EP0317594 A1 EP 0317594A1
Authority
EP
European Patent Office
Prior art keywords
contents
player
disk
program block
music
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP88904538A
Other languages
German (de)
English (en)
Inventor
Dieter Baas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Publication of EP0317594A1 publication Critical patent/EP0317594A1/fr
Ceased legal-status Critical Current

Links

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
    • 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
    • G11B27/102—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
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • 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
    • G11B27/30—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 the same track as the main recording
    • G11B27/3027—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 the same track as the main recording used signal is digitally coded
    • G11B27/3063—Subcodes
    • 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
    • G11B2220/00—Record carriers by type
    • G11B2220/60—Solid state media
    • G11B2220/65—Solid state media wherein solid state memory is used for storing indexing information or metadata

Definitions

  • the invention relates to a CD player in which, after inserting a CD, the table of contents is read and partially or completely stored in a memory.
  • Each CD contains a table of contents in which data is stored, which provides information about the number of program blocks stored on the disc, their start times and the total playing time of the disc.
  • the individual program blocks are usually pieces of music, but it can also be spoken text or various background sounds for the setting of films or slides. Up to 99 program blocks can be stored on a CD disk, but only 10 to 20 different pieces of music are usually found on a CD disk with music.
  • the table of contents of a CD disk has the data format shown in the figure.
  • the first block AC contains the title of the first piece of music
  • the second block A1 the title of the last piece of music
  • the third block A2 shows the total playing time of the CD.
  • blocks D1 - Dn are the start times of the individual n-pieces of music that are recorded on the CD disk; the blocks A0, A1, A2, D1 - Dn are combined in a group in which the table of contents of the CD disk is once completely stored.
  • the entry track ES is followed by a pause PE, the duration of which is fixed at two to three seconds.
  • the individual program blocks follow the pause PE, for example, as in FIG. 2, four pieces of music B1, B2, B3 and B4.
  • the piece of music B4 the exit track AS follows.
  • the individual program blocks can be separated from one another by pauses, the duration of which is not standardized.
  • FIG. 2 there is a pause P1 between the first program block B1 and the second program block B2 and a pause P2 between the second program block B2 and the third program block B3, while the fourth program block B4 immediately follows the third program block 83.
  • the pause P1 is, for example, greater than the pause P2.
  • each program block is identified by a number by which the CD player recognizes which one.
  • Program block is currently scanning its scanner.
  • each program block is provided with at least one, but at most 99, indices, by which a program block can be divided into up to 99 parts of any length.
  • the indices of a program block run from 01 to 99, but from 00 to 99 if there is a pause between two program blocks. Index 00 is always assigned to a pause.
  • program block B 1 has only one index 01
  • program block B2 is divided by indices 01, 02 and 03 into three parts
  • program block B3 is divided into two parts by indices 01 and 02
  • program block B4 again only has an index 01.
  • the time which shows the playing time of the CD disk is stored in parallel.
  • the time is paid like a countdown aowarts. For this reason, the following four pieces of information are available to the CD player, whose light beam is scanning a point in a program block:
  • the possible division of a program block into up to 99 indices is particularly advantageous for longer musical works or literature works.
  • the CD maker can, for example, identify the solos - piano solos or solos of a particular singer -, the arias, the duets or the choirs using the indices.
  • literature works e.g. Identify monologues or dialogues of certain people using the indices.
  • the invention solves this problem in that, in the case of a partially or completely illegible table of contents, the scanning device of the CD player is moved to the end of the table of contents and the part of the CD disk following the table of contents can be played.
  • the invention is explained on the basis of a first exemplary embodiment. If the CD player determines that the table of contents of an inserted CD is illegible, its optical scanning device is positioned at the end of the table of contents. From here, the CD disk is scanned step by step. The numbers of the individual program blocks, ie the individual pieces of music, are obtained by the step-by-step scanning. Since the playing time is also stored on the CD in parallel to each piece of music, the CD player can win the starting times of all pieces of music and save them in a memory. If, for example, the scanning device in the musical piece No. 2 accidentally falls to the position 20 seconds after the beginning of the musical piece No. 2 during the step-by-step scanning, the CD player can determine the starting time from the playing time T of the musical piece No. 2 by forming the difference T-20s calculate and save the piece of music No. 2. In this way, the start times of all pieces of music are obtained.
  • the CD disk is not first scanned step by step, but playback is started immediately.
  • the numbers of the individual pieces of music and their start times are automatically obtained and saved during playback.
  • the second exemplary embodiment has the advantage that the listener can immediately hear the record without having to wait for the step-by-step scanning as in the first exemplary embodiment.
  • a third exemplary embodiment of the invention provides a choice between step-by-step scanning and immediate playback of the CD disk. If, for example, the listener calls up functions on the CD player for which data are still missing, the missing data is first obtained by step-by-step scanning.

Landscapes

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

Des lecteurs de disques compacts lisent d'abord le sommaire d'un disque compact introduit pour lecture et l'enregistrent en partie ou en entier. Malgré le degré élevé de redondance de ces sommaires, il peut arriver qu'ils soient illisibles pour des lecteurs de disques compacts. Afin de permettre à un lecteur de disques compacts de fonctionner en dépit de l'illisibilité du sommaire, le dispositif d'exploration du lecteur de disques compacts cherche la fin du sommaire. La partie du disque compact qui suit le sommaire peut alors être reproduite. Les données du sommaire sont récupérées pendant la reproduction du disque compact ou pendant une exploration préalable par étapes.
EP88904538A 1987-06-09 1988-06-01 Lecteur de disques compacts Ceased EP0317594A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873719218 DE3719218A1 (de) 1987-06-09 1987-06-09 Cd-spieler
DE3719218 1987-06-09

Publications (1)

Publication Number Publication Date
EP0317594A1 true EP0317594A1 (fr) 1989-05-31

Family

ID=6329332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88904538A Ceased EP0317594A1 (fr) 1987-06-09 1988-06-01 Lecteur de disques compacts

Country Status (6)

Country Link
EP (1) EP0317594A1 (fr)
JP (1) JPH01503657A (fr)
KR (1) KR890702206A (fr)
DE (1) DE3719218A1 (fr)
HU (1) HUT51787A (fr)
WO (1) WO1988009994A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4104041A1 (de) * 1991-02-09 1992-08-13 Thomson Brandt Gmbh Verfahren zum lesen von daten eines rotierenden aufzeichnungstraegers
US5414684A (en) * 1992-01-24 1995-05-09 Pioneer Electronic Corporation Method and apparatus for discriminating type of disks positioned on a CD player
DE19755741A1 (de) * 1997-12-16 1999-06-17 Thomson Brandt Gmbh CD-Spieler für CD-ähnliche Aufzeichnungsformate

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6093172U (ja) * 1983-11-30 1985-06-25 パイオニア株式会社 記録情報再生装置
JPH0756746B2 (ja) * 1985-03-29 1995-06-14 ソニー株式会社 追記型光デイスクにおける記録済デ−タの目録作成方法
DE3650737T2 (de) * 1985-07-03 2000-06-08 Pioneer Electronic Corp., Tokio/Tokyo Wiedergabeverfahren für Information auf Platten und deren Identifikation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8809994A1 *

Also Published As

Publication number Publication date
DE3719218A1 (de) 1988-12-22
JPH01503657A (ja) 1989-12-07
KR890702206A (ko) 1989-12-23
HUT51787A (en) 1990-05-28
WO1988009994A1 (fr) 1988-12-15

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