AU574722B2 - Creación de Inventos y Patentes con Inteligencia Artificial

AU574722B2 – High density code for optical recording
– Google Patents

AU574722B2 – High density code for optical recording
– Google Patents
High density code for optical recording

Info

Publication number
AU574722B2

AU574722B2
AU33789/84A
AU3378984A
AU574722B2
AU 574722 B2
AU574722 B2
AU 574722B2
AU 33789/84 A
AU33789/84 A
AU 33789/84A
AU 3378984 A
AU3378984 A
AU 3378984A
AU 574722 B2
AU574722 B2
AU 574722B2
Authority
AU
Australia
Prior art keywords
high density
optical recording
density code
code
recording
Prior art date
1983-10-13
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
AU33789/84A
Other versions

AU3378984A
(en

Inventor
Christiaan Steenbergen
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.)

Koninklijke Philips NV

Original Assignee
Laser Magnetic Storage International Inc
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.)
1983-10-13
Filing date
1984-10-03
Publication date
1988-07-14

1984-10-03
Application filed by Laser Magnetic Storage International Inc
filed
Critical
Laser Magnetic Storage International Inc

1985-04-18
Publication of AU3378984A
publication
Critical
patent/AU3378984A/en

1988-07-14
Application granted
granted
Critical

1988-07-14
Publication of AU574722B2
publication
Critical
patent/AU574722B2/en

1992-09-24
Assigned to N.V. PHILIPS GLOEILAMPENFABRIEKEN
reassignment
N.V. PHILIPS GLOEILAMPENFABRIEKEN
Alteration of Name(s) in Register under S187
Assignors: LASER MAGNETIC STORAGE INTERNATIONAL CO.

1994-12-15
Assigned to PHILIPS ELECTRONICS N.V.
reassignment
PHILIPS ELECTRONICS N.V.
Request to Amend Deed and Register
Assignors: N.V. PHILIPS GLOEILAMPENFABRIEKEN

2004-10-03
Anticipated expiration
legal-status
Critical

Status
Ceased
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof

G11B7/24085—Pits

G—PHYSICS

G11—INFORMATION STORAGE

G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor

G11B20/10—Digital recording or reproducing

G11B20/14—Digital recording or reproducing using self-clocking codes

G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels

G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol

G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code

G—PHYSICS

G11—INFORMATION STORAGE

G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor

G11B20/10—Digital recording or reproducing

G11B20/14—Digital recording or reproducing using self-clocking codes

G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels

G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code

G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof

G—PHYSICS

G11—INFORMATION STORAGE

G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor

G—PHYSICS

G11—INFORMATION STORAGE

G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

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

G11B7/013—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 for discrete information, i.e. where each information unit is stored in a distinct discrete location, e.g. digital information formats within a data block or sector

AU33789/84A
1983-10-13
1984-10-03
High density code for optical recording

Ceased

AU574722B2
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

US54175383A

1983-10-13
1983-10-13

US541753

1983-10-13

Publications (2)

Publication Number
Publication Date

AU3378984A

AU3378984A
(en)

1985-04-18

AU574722B2
true

AU574722B2
(en)

1988-07-14

Family
ID=24160893
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU33789/84A
Ceased

AU574722B2
(en)

1983-10-13
1984-10-03
High density code for optical recording

Country Status (7)

Country
Link

JP
(1)

JPH0721941B2
(en)

AU
(1)

AU574722B2
(en)

CA
(1)

CA1229164A
(en)

DE
(1)

DE3416547C2
(en)

FR
(1)

FR2557344B1
(en)

GB
(1)

GB2148670B
(en)

NL
(1)

NL8403044A
(en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

JPS60231980A
(en)

1983-12-29
1985-11-18
レーザー　マグネテイツク　ストーリツジ　インターナシヨナル　コンパニー
High-density code for optical recording

US4881076A
(en)

1987-12-01
1989-11-14
International Business Machines Corporation
Encoding for pit-per-transition optical data recording

JPH06325369A
(en)

1993-03-08
1994-11-25
Philips Electron Nv
Combined optical recording and reading device

Citations (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

EP0066512A1
(en)

1981-06-02
1982-12-08

Thomson-Csf

Binary data coding method and its application to a magnetic tape transfer system for a digital video signal

EP0074656A2
(en)

1981-09-11
1983-03-23

Sony Corporation

Method and apparatus for encoding a binary digital information signal

Family Cites Families (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

CA1122711A
(en)

1976-07-14
1982-04-27
Sperry Rand Corporation
Method and apparatus for encoding and recovering binary digital data

JPS55141852A
(en)

1979-04-24
1980-11-06
Sony Corp
Data converting system

NL8006165A
(en)

1980-11-12
1982-06-01
Philips Nv

SYSTEM FOR TRANSFER OF DIGITAL INFORMATION, CODER FOR APPLICATION IN THAT SYSTEM, DECODER FOR APPLICATION IN THAT SYSTEM AND RECORD CARRIAGE FOR APPLICATION IN THAT SYSTEM.

US4377805A
(en)

1981-04-20
1983-03-22
Emi Limited
Magnetic recording

1984

1984-05-04
DE
DE19843416547
patent/DE3416547C2/en
not_active
Expired – Fee Related

1984-06-12
JP
JP12063484A
patent/JPH0721941B2/en
not_active
Expired – Lifetime

1984-07-13
CA
CA000458854A
patent/CA1229164A/en
not_active
Expired

1984-09-19
GB
GB08423669A
patent/GB2148670B/en
not_active
Expired

1984-10-03
AU
AU33789/84A
patent/AU574722B2/en
not_active
Ceased

1984-10-05
NL
NL8403044A
patent/NL8403044A/en
not_active
Application Discontinuation

1984-10-12
FR
FR8415717A
patent/FR2557344B1/en
not_active
Expired

Patent Citations (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

EP0066512A1
(en)

1981-06-02
1982-12-08
Thomson-Csf
Binary data coding method and its application to a magnetic tape transfer system for a digital video signal

EP0074656A2
(en)

1981-09-11
1983-03-23
Sony Corporation
Method and apparatus for encoding a binary digital information signal

Also Published As

Publication number
Publication date

GB2148670A
(en)

1985-05-30

FR2557344A1
(en)

1985-06-28

DE3416547C2
(en)

1994-10-06

FR2557344B1
(en)

1989-01-06

AU3378984A
(en)

1985-04-18

NL8403044A
(en)

1985-05-01

CA1229164A
(en)

1987-11-10

JPH0721941B2
(en)

1995-03-08

DE3416547A1
(en)

1986-01-09

JPS6083225A
(en)

1985-05-11

GB8423669D0
(en)

1984-10-24

GB2148670B
(en)

1987-07-08

Información de contacto