DE19604067A1 - Compact disc with data on both sides - Google Patents

Compact disc with data on both sides

Info

Publication number
DE19604067A1
DE19604067A1 DE1996104067 DE19604067A DE19604067A1 DE 19604067 A1 DE19604067 A1 DE 19604067A1 DE 1996104067 DE1996104067 DE 1996104067 DE 19604067 A DE19604067 A DE 19604067A DE 19604067 A1 DE19604067 A1 DE 19604067A1
Authority
DE
Germany
Prior art keywords
disc
sides
drive
read
page
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.)
Withdrawn
Application number
DE1996104067
Other languages
German (de)
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.)
GAYLER MICHAEL
Original Assignee
GAYLER MICHAEL
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 GAYLER MICHAEL filed Critical GAYLER MICHAEL
Priority to DE1996104067 priority Critical patent/DE19604067A1/en
Publication of DE19604067A1 publication Critical patent/DE19604067A1/en
Withdrawn legal-status Critical Current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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
    • 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
    • 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
    • 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
    • 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
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24038—Multiple laminated recording layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/213—Read-only discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/218—Write-once 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
    • G11B2220/2545—CDs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—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
    • G11B2220/255—CD-I, i.e. CD-interactive

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

The CD or CD-ROM disc is recorded on both sides and can be simultaneously read using a drive unit that has a laser head for both sides. The information may be recorded on one side in the opposite direction to that of the other side, so avoiding the need to reverse the drive direction. Information is printed on one side of the disc using a transparent colour that allows the face passage of the laser light.

Description

Es ist bekannt, daß sich die digitale Disc als Datenträger durchgesetzt hat. Die Original Standards für Compact Disc wurden von Philips und Sony entwickelt und veröffentlicht als eine Serie von "Color Books": Red, Yellow. Green, Orange, White. Diese definieren und beschreiben die Technologien und Patentinformationen zur Herstellung von CDs und CD Abspielgeräten (Laufwerken). Einige der Philips/Sony Spezifikationen sind durch ISO/IEC der Öffentlichkeit zugänglich, wie zum Beispiel das Yellow Book (ISO/IEC 10149).It is known that the digital disc is a data carrier has prevailed. The original standards for compact disc were developed and published by Philips and Sony as one Series of "Color Books": Red, Yellow. Green, orange, white. These define and describe the technologies and Patent information for the production of CDs and CDs Playback devices (drives). Some of the Philips / Sony Specifications are public through ISO / IEC accessible, such as the Yellow Book (ISO / IEC 10149).

Der im Patentanspruch 1 angegebenen Erfindung liegt das Problem zugrunde, daß die Speicherkapazität einer herkömmlichen Disc auch bei Datenkomprimierung für umfangreiche Programme zu gering ist.The invention specified in claim 1 is the problem based on the fact that the storage capacity of a conventional disc too low, even with data compression for extensive programs is.

Dieses Problem wird durch die im Patentanspruch 1 aufgeführten Merkmale gelöst. Die Speicherkapazität der Disc wird verdoppelt. Die Disc ist mit allen gängigen Laufwerken kompatibel.This problem is caused by those listed in claim 1 Features resolved. The storage capacity of the disc is doubled. The disc is compatible with all common drives.

Der in den Patentansprüchen 1 bis 4 angegebenen Erfindungen liegt weiterhin das Problem zugrunde, daß die Auslesegeschwindigkeit der Disc für umfangreiche Programme zu gering ist.The inventions specified in claims 1 to 4 there is still the problem that the Reading speed of the disc for extensive programs too is low.

Dieses Problem wird durch die in den Patentansprüchen 1 bis 4 aufgeführten Merkmale gelöst.This problem is solved by the in claims 1 to 4 listed features solved.

Die Disc kann von beiden Seiten gleichzeitig gelesen werden. Bei serieller Auslesung kann ein Laser positioniert werden, während der zweite Laser die zweite Seite ausliest. Da eine der beiden Seiten in entgegengesetzter Laufrichtung beschrieben ist, ist keine Laufrichtungsänderung der Disc durch das Laufwerk erforderlich.The disc can be read from both sides at the same time. At A laser can be positioned during serial readout the second laser reads the second side. Because one of the two Pages described in the opposite direction is no direction change of the disc by the drive required.

Der im Patentanspruch 5 angegebenen Erfindung liegt das Problem zugrunde, daß eine beidseitig digital beschriebene Disc nicht optisch ansprechend und werbewirksam bedruckt werden kann.The invention specified in claim 5 is the problem based on the fact that a digitally written disc is not optically appealing and can be printed effectively.

Dieses Problem wird durch die im Patentanspruch 5 aufgeführten Merkmale gelöst. Die optische Beschriftung erfolgt mit transparenter Farbe, die für das Licht des Lasers durchlässig ist.This problem is caused by those listed in claim 5 Features resolved. The optical labeling is done with transparent color that is translucent to the light of the laser is.

Der im Patentanspruch 6 angegebenen Erfindung liegt das Problem zugrunde, daß eine beidseitig beschriebene Disc von einem herkömmlichen Laufwerk nur einseitig ausgelesen werden kann.The invention specified in claim 6 is the problem based on the fact that a disc written on both sides by a conventional drive can only be read on one side.

Dieses Problem wird durch die im Patentanspruch 6 aufgeführten Merkmale gelöst. Die Disc kann von beiden Seiten gleichzeitig gelesen werden. Bei serieller Auslesung kann ein Laser positioniert werden, während der zweite Laser die zweite Seite ausliest. Wenn eine der beiden Seiten in entgegengesetzter Laufrichtung beschrieben ist, ist keine Laufrichtungsänderung der Disc durch das Laufwerk erforderlich. This problem is caused by those listed in claim 6 Features resolved. The disc can be viewed from both sides at the same time to be read. A laser can be used for serial reading be positioned while the second laser is the second side reads. If either side is in opposite Direction of travel is not a change of direction the disc is required by the drive.  

Der im Patentanspruch 7 angegebenen Erfindung liegt das Problem zugrunde, daß eine beidseitig beschriebene Disc, deren zweite Seite nicht in entgegengesetzter Laufrichtung beschrieben ist, ihre Laufrichtung ändern muß um von der zweiten Seite ausgelesen zu werden.The invention specified in claim 7 is the problem based on the fact that a disc described on both sides, the second Page is not written in the opposite direction, must change direction to from the second side to be read out.

Dieses Problem wird durch die im Patentanspruch 7 aufgeführten Merkmale gelöst. Das Laufwerk ändert die Laufrichtung der Disc, die dann seriell beidseitig ausgelesen werden kann.This problem is caused by those listed in claim 7 Features resolved. The drive changes the direction of the disc, which can then be read out serially on both sides.

Die mit der Erfindung erreichten Vorteile bestehen insbesondere darin, daß die Speicherkapazität der Digital Disc verdoppelt wird. Weiterhin wird die Auslesegeschwindigkeit und damit der Datenfluß verdoppelt, wenn die Disc gleichzeitig von beiden Seiten ausgelesen wird. Die transparente Farbe zur optischen Gestaltung der Disc ermöglicht eine verkaufsfördernde, ansprechende Optik. Die Herstellung ist einfach und ohne große Änderungen der bestehenden Herstellungsverfahren möglich.The advantages achieved with the invention are in particular in that the storage capacity of the digital disc doubles becomes. Furthermore, the readout speed and thus the Data flow doubles when the disc is shared by both Pages is read. The transparent color for optical Design of the disc enables a promotional, appealing look. The manufacture is simple and without great Changes to existing manufacturing processes possible.

Claims (7)

1. Scheibenförmiger digitaler Datenträger (Disc) wie CD, CD-R,CD-ROM und CD-I etc., dadurch gekennzeichnet, daß die Disc aus zwei entsprechend dünner gefertigten Discs zusammengesetzt ist, die rückseitig miteinander verbunden sind.1. Disc-shaped digital data carrier (disc) such as CD, CD-R, CD-ROM and CD-I etc., characterized in that the disc is composed of two correspondingly thinner discs that are connected to one another on the back. 2. Disc nach Patentanspruch 1, dadurch gekennzeichnet, daß die eine Seite der Disc in entgegengesetzter Laufrichtung beschrieben ist.2. Disc according to claim 1, characterized, that one side of the disc is in opposite Running direction is described. 3. Disc nach Patentanspruch 1, dadurch gekennzeichnet, daß die Inhaltsverzeichnisse der jeweiligen Seiten auf die Inhalte der gegenüber liegenden Seite verweisen. 3. Disc according to claim 1, characterized, that the tables of contents of the respective pages refer to the content of the opposite page.   4. Disc nach Patentanspruch 1, gekennzeichnet dadurch, daß das Inhaltsverzeichnis beider Seiten auf einer Seite untergebracht ist.4. Disc according to claim 1, characterized by that the table of contents of both pages on one page is housed. 5. Disc nach Patentanspruch 1, dadurch gekennzeichnet, daß die optische Beschriftung mit transparenter Farbe erfolgt.5. Disc according to claim 1, characterized, that the optical labeling with transparent color he follows. 6. Laufwerk für digitale Datenträger wie CD, CD-ROM. CD-R, CD-I etc., gekennzeichnet dadurch, daß ein zweiter Laser eingebaut ist, der so angeordnet ist, daß er die zweite Seite einer beidseitig beschriebenen Disc auslesen kann.6. Drive for digital data media such as CD, CD-ROM. CD-R, CD-I etc., characterized by that a second laser is installed, which is arranged so that he was the second side of a two-sided Can read the disc. 7. Laufwerk nach Patentanspruch 1, dadurch gekennzeichnet, daß die Laufrichtung des Laufwerks wechselt, in Abhängigkeit der auszulesenden Seite.7. Drive according to claim 1, characterized, that the direction of the drive changes, in Dependency of the page to be read.
DE1996104067 1996-02-01 1996-02-01 Compact disc with data on both sides Withdrawn DE19604067A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996104067 DE19604067A1 (en) 1996-02-01 1996-02-01 Compact disc with data on both sides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996104067 DE19604067A1 (en) 1996-02-01 1996-02-01 Compact disc with data on both sides

Publications (1)

Publication Number Publication Date
DE19604067A1 true DE19604067A1 (en) 1997-08-07

Family

ID=7784519

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996104067 Withdrawn DE19604067A1 (en) 1996-02-01 1996-02-01 Compact disc with data on both sides

Country Status (1)

Country Link
DE (1) DE19604067A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1014348A2 (en) * 1998-12-22 2000-06-28 Deutsche Thomson-Brandt Gmbh Reproduction apparatus for double-sided recording media
US10056104B1 (en) * 2017-07-06 2018-08-21 Lite-On Technology Corporation Optical disc and method for judging whether optical disc is placed reversely

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2615605B1 (en) * 1976-04-09 1977-10-06 Polygram Gmbh DISC-SHAPED INFORMATION CARRIER AND METHOD FOR ITS MANUFACTURING
DE3425578A1 (en) * 1984-07-11 1986-01-16 Polygram Gmbh, 2000 Hamburg OPTICALLY READABLE DISK-SHAPED INFORMATION CARRIER WITH HIGH STORAGE DENSITY
EP0639830A1 (en) * 1989-07-28 1995-02-22 Matsushita Electric Industrial Co., Ltd. Optical recording apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2615605B1 (en) * 1976-04-09 1977-10-06 Polygram Gmbh DISC-SHAPED INFORMATION CARRIER AND METHOD FOR ITS MANUFACTURING
DE3425578A1 (en) * 1984-07-11 1986-01-16 Polygram Gmbh, 2000 Hamburg OPTICALLY READABLE DISK-SHAPED INFORMATION CARRIER WITH HIGH STORAGE DENSITY
EP0639830A1 (en) * 1989-07-28 1995-02-22 Matsushita Electric Industrial Co., Ltd. Optical recording apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1014348A2 (en) * 1998-12-22 2000-06-28 Deutsche Thomson-Brandt Gmbh Reproduction apparatus for double-sided recording media
DE19859069A1 (en) * 1998-12-22 2000-07-06 Thomson Brandt Gmbh Playback device for double-sided recording media
EP1014348A3 (en) * 1998-12-22 2001-02-07 Deutsche Thomson-Brandt Gmbh Reproduction apparatus for double-sided recording media
US6603714B1 (en) 1998-12-22 2003-08-05 Thomson Licensing S.A. Reproduction apparatus for double-sided recording media
US10056104B1 (en) * 2017-07-06 2018-08-21 Lite-On Technology Corporation Optical disc and method for judging whether optical disc is placed reversely

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Legal Events

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OP8 Request for examination as to paragraph 44 patent law
8130 Withdrawal