EP1121688A1 - Support d'enregistrement en forme de disque - Google Patents

Support d'enregistrement en forme de disque

Info

Publication number
EP1121688A1
EP1121688A1 EP99957899A EP99957899A EP1121688A1 EP 1121688 A1 EP1121688 A1 EP 1121688A1 EP 99957899 A EP99957899 A EP 99957899A EP 99957899 A EP99957899 A EP 99957899A EP 1121688 A1 EP1121688 A1 EP 1121688A1
Authority
EP
European Patent Office
Prior art keywords
rotation
axis
data
program area
recording medium
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
EP99957899A
Other languages
German (de)
English (en)
Inventor
Dietmar Uchtmann
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1121688A1 publication Critical patent/EP1121688A1/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
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/0079—Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head

Definitions

  • the invention is based on a plate-shaped
  • Disc-shaped recording media are already known in the form of compact discs.
  • the compact discs contain digital audio data as user data in a ring
  • the digital audio data can be read out by a compact disc player, the corresponding compact disc being set in rotation about its axis of rotation and the digital audio data being read out by means of a reading device moved radially away from the axis of rotation.
  • the ring-shaped program area with the digital audio data is arranged concentrically to the axis of rotation on the compact disc.
  • the disk-shaped recording medium according to the invention with the features of the main claim has the advantage that the program area comprises a first part and a second part, that the first part is arranged closer to the axis of rotation than the second part and that the user data are only stored in the second part . Since with increasing distance from the axis of rotation the circumference of circular rings concentric to the axis of rotation on the plate-shaped recording media grows, so does the amount of user data that can be stored on these circular rings. The further the user data is stored on the record carrier away from the axis of rotation, the smaller the number of data tracks required for this.
  • the disk-shaped recording medium is moved around the axis of rotation at a constant angular speed, the web speed increases with increasing distance from the axis of rotation, so that the useful data stored further away from the axis of rotation can be read out more quickly by a reading device moved radially outward from the axis of rotation.
  • the user data are stored up to an outer edge of the program area facing away from the axis of rotation. In this way, the access time to user data in data tracks of the recording medium is further reduced and the reading speed is further increased when the recording medium rotates at a constant angular speed.
  • Sectors of the same amount of data are stored, that the sectors are arranged approximately in data tracks concentrically to the axis of rotation and that the number of sectors in a data track increases with increasing distance from the axis of rotation. So you can be particularly simple
  • the user data are stored in the smallest possible number of data tracks at the greatest possible distance from the axis of rotation in order to reduce the time required for track jumps when accessing user data and to increase the readout speed when the recording medium rotates at a constant angular speed.
  • FIG. 1 shows a plan view of a plate-shaped recording medium
  • FIG. 2 shows a section of a program area of the plate-shaped recording medium.
  • FIG. 1 the top view of a circular disk-shaped recording medium 1 is shown.
  • the record carrier 1 can be designed as an optical disk, as a magnetic disk, as an opto-magnetic disk or the like.
  • Recording medium 1 can be, for example, a compact disc, a CD-ROM, a digital video disc (DVD) or the like.
  • the record carrier 1 comprises a rotation axis 5, about which it can be rotated in a suitable player for reading out useful data stored on the record carrier 1.
  • the axis of rotation 5 is located in a central plate hole 45 for adjusting the recording medium 1 on one Platter of the player.
  • the central plate hole 45 is followed by an annular inlet area 50 which is concentric with the axis of rotation 5 and in which information about a total playback time and addresses of user data groups stored on the recording medium 1 can be stored. If the recording medium 1 is designed as a compact disc, the total number of music tracks recorded on the compact disc, the total playback time of the music tracks in minutes and seconds and the addresses of the music tracks can be stored on the compact disc in the entry area 50.
  • the program area 10 Connected to the inlet area 50 is an annular program area 10 shown hatched in FIG. 1, which is also arranged concentrically to the axis of rotation 5 on the recording medium 1.
  • the program area 10 comprises a first part 15 and a second part 20.
  • the first part 15 and the second part 20 of the program area 10 are likewise arranged in a ring shape and concentric to the axis of rotation 5 on the recording medium 1.
  • the first part 15 of the program area 10 is arranged closer to the axis of rotation 5 than the second part 20.
  • the first part 15 of the program area 10 thus adjoins the inlet area 50.
  • the second part 20 of the program area 10 then adjoins the first part 15 of the program area 10.
  • the program area 10 is used to store user data, which in the case of the recording medium being designed as a compact disc, for example digital audio data in the form of music titles. However, the user data are only stored in the second part 20 of the program area 10. Fill data without useful information can be stored in the first part 15 of the program area 10.
  • the second part 20 of the program area 10 is followed by a run-out area 55, in which filler data without useful information or also no data can be stored.
  • the run-out area 55 is therefore not used for storing useful data. It can also be provided that no data is stored in the first part 15 of the program area 10.
  • the user data When the user data is stored in the second part 20 of the program area 10, it can additionally be provided to store the user data up to an outer edge 25 of the second part 20 of the program area 10 facing away from the axis of rotation 5.
  • FIG. 2 a section from the second part 20 of the program area 10 is shown.
  • the user data are stored in sectors 30 of the same amount of data.
  • the sectors 30 are arranged in a spiral data track that is concentric with the axis of rotation 5.
  • the spiral-shaped data track can approximately be broken down into successive individual circular ring-shaped data tracks 35, 40 which are concentric with the axis of rotation 5.
  • two such data tracks 35, 40 with different distances A from the axis of rotation 5 are shown by way of example.
  • a first data track 35 is arranged concentrically to the axis of rotation 5 in the second part 20 of the program area 10 on the recording medium 1. It has a first distance A ] _ from the axis of rotation 5.
  • a second data track 40 is also arranged concentrically to the axis of rotation 5 in the second part 20 of the program area 10 on the recording medium 1 and is at a second distance A2 from the axis of rotation 5.
  • the second distance A2 is greater than the first distance A ⁇ _, so that the second data track 40 further from the Rotation axis 5 is removed than the first data track 35.
  • the second data track 40 thus has a larger radius and thus a larger circumference than the first data track 35, so that more sectors 30 of the same amount of data can be arranged in the second data track 40 as in that first data track 35.
  • the number of sectors 30 of the same amount of data in a data track thus increases with increasing distance A from the axis of rotation 5.
  • the result is that the same amount of user data can be stored in fewer data tracks. This effect is further enhanced if the user data are stored up to the outer edge 25 of the second part 20 of the program area 10 facing away from the axis of rotation 5. The user data can no longer be stored further away from the axis of rotation 5, since the run-out area 55 is not intended for the storage of user data.
  • the described reduction in the number of data tracks for storing the user data in the program area 10 can reduce the jump distance for track jumps of the reading device of the playback device for access to certain user data and thus the access time can be reduced.
  • the path speed of the second data track 40 is greater than the path speed of the first data track 35, since the second data track 40 is further from that Rotation axis 5 is removed than the first data track 35.
  • more useful data can be read out from the second data track 40 than from the first data track 35 at the same time.
  • the arrangement of the data tracks with the user data in the second part 20 of the program area 10 therefore increases the speed for reading out the user data from the data tracks, especially when the user data in the data tracks extend to the outer edge 25 facing away from the axis of rotation 5 of the second part 20 of the program area 10 are stored.
  • Jump distance can be specified with increasing distance from the axis of rotation 5. It should be assumed that the recording medium 1 is read out at a constant web speed, regardless of the distance of the respective data track from the axis of rotation 5. Regardless of the location on the recording medium 1, a sector 30 is to be read out in 75ths of a second by the reading device of the playback device. The number of data tracks between the address close to the rotation axis 0 minutes, 2 seconds, 0 sectors to the address 1 minute, 2 seconds, 0 sectors on the recording medium 1 is 586. 4,500 sectors 30 are skipped.
  • the number of data tracks is only 252, although a distance of 4,500 sectors 30 is also covered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

L'invention concerne un support d'enregistrement (1) en forme de disque, en particulier un disque optique, caractérisé par une diminution du temps d'accès et une augmentation de la vitesse de lecture. Le support d'enregistrement en forme de disque (1) selon l'invention comporte un axe de rotation (5) et une zone de programme (10) servant au stockage des données utiles. La zone de programme (10) est réalisée en anneau et de manière concentrique par rapport à l'axe de rotation (5) sur le support d'enregistrement (1). Elle comprend une première partie (15) et une seconde partie (20), la première partie (15) étant plus proche de l'axe de rotation (5) que la seconde partie (20). On stocke les données utiles uniquement dans la seconde partie (20).
EP99957899A 1998-10-14 1999-10-14 Support d'enregistrement en forme de disque Ceased EP1121688A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19847393 1998-10-14
DE1998147393 DE19847393C1 (de) 1998-10-14 1998-10-14 Plattenförmiger Aufzeichnungsträger
PCT/DE1999/003293 WO2000022615A1 (fr) 1998-10-14 1999-10-14 Support d'enregistrement en forme de disque

Publications (1)

Publication Number Publication Date
EP1121688A1 true EP1121688A1 (fr) 2001-08-08

Family

ID=7884467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99957899A Ceased EP1121688A1 (fr) 1998-10-14 1999-10-14 Support d'enregistrement en forme de disque

Country Status (4)

Country Link
EP (1) EP1121688A1 (fr)
JP (1) JP2002527852A (fr)
DE (1) DE19847393C1 (fr)
WO (1) WO2000022615A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4277708B2 (ja) * 2004-02-24 2009-06-10 ソニー株式会社 再生装置および再生方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740760A (en) * 1980-08-21 1982-03-06 Toshiba Corp Optical disk device
EP0164061B1 (fr) * 1984-06-01 1989-05-17 Matsushita Electric Industrial Co., Ltd. Disque optique exclusivement de reproduction
JPH0684174A (ja) * 1992-09-03 1994-03-25 Hitachi Ltd 光ディスク媒体とそれを用いた情報処理装置
JP2881092B2 (ja) * 1993-05-25 1999-04-12 富士通株式会社 可換記憶媒体のファイル管理方法
JP2000503446A (ja) * 1995-10-19 2000-03-21 松下電器産業株式会社 情報記憶媒体および情報再生方法および情報再生装置
DE69632267T2 (de) * 1996-01-16 2004-08-26 Matsushita Electric Industrial Co., Ltd., Kadoma Optische platte

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0022615A1 *

Also Published As

Publication number Publication date
WO2000022615A1 (fr) 2000-04-20
JP2002527852A (ja) 2002-08-27
DE19847393C1 (de) 2000-05-04

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