IT8067451A0 - Sopporto di registrazione di informazioni del tipo a lettura ottica - Google Patents

Sopporto di registrazione di informazioni del tipo a lettura ottica

Info

Publication number: IT8067451A0
Authority: IT; Italy
Prior art keywords: type information; optical reading; reading type; recording support; recording
Prior art date: 1979-03-27

Application number

IT8067451A

Other languages

English (en)

Other versions

IT1128073B (it

Inventor

Josephus Johannes Maria Braat

Original Assignee

Philips Nv

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.)

1979-03-27

Filing date

1980-03-24

Publication date

1980-03-24

1980-03-24 Application filed by Philips Nv filed Critical Philips Nv

1980-03-24 Publication of IT8067451A0 publication Critical patent/IT8067451A0/it

1986-05-28 Application granted granted Critical

1986-05-28 Publication of IT1128073B publication Critical patent/IT1128073B/it

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
- 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
- G11B7/24073—Tracks
- G11B7/24079—Width or depth

IT67451/80A 1979-03-27 1980-03-24 Sopporto di registrazione di informauione del tipo a lettura ottica IT1128073B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL7902363A NL7902363A (nl)	1979-03-27	1979-03-27	Registratiedrager met een optisch uitleesbare informa- tiestruktuur.

Publications (2)

Publication Number	Publication Date
IT8067451A0 true IT8067451A0 (it)	1980-03-24
IT1128073B IT1128073B (it)	1986-05-28

Family

ID=19832872

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT67451/80A IT1128073B (it)	1979-03-27	1980-03-24	Sopporto di registrazione di informauione del tipo a lettura ottica

Country Status (13)

Country	Link
US (1)	US4499574A (it)
JP (1)	JPS55132538A (it)
AT (1)	AT368311B (it)
AU (1)	AU535939B2 (it)
BE (1)	BE882425A (it)
CA (1)	CA1164558A (it)
DE (1)	DE3011176A1 (it)
ES (1)	ES8100519A1 (it)
FR (1)	FR2452759A1 (it)
GB (1)	GB2045997B (it)
IT (1)	IT1128073B (it)
NL (1)	NL7902363A (it)
SE (1)	SE8002228L (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0054438B1 (en) *	1980-12-17	1985-11-06	Matsushita Electric Industrial Co., Ltd.	Optical disk having an index mark
EP0081138B1 (en) *	1981-12-01	1987-10-21	Matsushita Electric Industrial Co., Ltd.	Optical recording and reproducing disc
JPS5919250A (ja) *	1982-07-21	1984-01-31	Hitachi Ltd	情報の記録再生装置
NL8500153A (nl) *	1985-01-22	1986-08-18	Philips Nv	Registratiedragerlichaam voorzien van een reliefstruktuur van optisch detekteerbare servospoorgedeelten en sektoradressen en inrichting voor het aanbrengen van deze struktuur.
NL8500152A (nl) *	1985-01-22	1986-08-18	Philips Nv	Registratiedragerlichaam voorzien van vooraf aangebrachte en optisch detekteerbare servospoorgedeelten en sektoradressen.
SE447313B (sv) *	1985-03-19	1986-11-03	Ericsson Telefon Ab L M	Databerare i form av ett foretredesvis rektangulert kort med ett cirkulert omrade for tet optisk registrering av data
JPS6410463A (en) *	1987-07-01	1989-01-13	Sony Corp	Magnetic disk
JPS648514A (en) *	1987-07-01	1989-01-12	Canon Kk	Method and device for reproducing optical information and optical information recording medium
JPS6474411A (en) *	1987-09-16	1989-03-20	Yamaha Corp	Position detector
JPH0253237A (ja) *	1988-08-16	1990-02-22	Ricoh Co Ltd	光学式情報記録媒体
US5229901A (en) *	1991-06-28	1993-07-20	Digital Equipment Corporation	Side-by-side read/write heads with rotary positioner
US5452285A (en) *	1993-09-30	1995-09-19	Polaroid Corporation	Uniformly distributed servo data for optical information storage medium
JP2003248168A (ja) *	2001-12-21	2003-09-05	Konica Corp	光ピックアップ装置、および光学素子

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL7212015A (it) *	1972-09-04	1974-03-06
NL172111C (nl) *	1973-07-02	1983-07-01	Philips Nv	Registratiedrager waarop informatie is vastgelegd in een optische struktuur en inrichting voor het inschrijven van een dergelijke registratiedrager.
US4118734A (en) *	1974-02-14	1978-10-03	U.S. Philips Corporation	Optical videodisc with variable width tracks
GB1545234A (en) *	1975-10-31	1979-05-02	Hitachi Ltd	Information play-back apparatus
JPS5369006A (en) *	1976-11-30	1978-06-20	Sony Corp	Reproducer of disc form signal recording media
US4157460A (en) *	1977-09-22	1979-06-05	Cbs Inc.	Apparatus for cutting audio disks
NL187413C (nl) *	1978-03-16	1991-09-16	Philips Nv	Registratiedragerlichaam, ingeschreven registratiedrager, werkwijze voor het inschrijven van het registratiedragerlichaam en inrichting voor het uitvoeren van de werkwijze en voor het uitlezen van een ingeschreven registratiedrager.

1979
- 1979-03-27 NL NL7902363A patent/NL7902363A/nl not_active Application Discontinuation
- 1979-06-07 US US06/046,419 patent/US4499574A/en not_active Expired - Lifetime
1980
- 1980-03-19 CA CA000347978A patent/CA1164558A/en not_active Expired
- 1980-03-21 AU AU56719/80A patent/AU535939B2/en not_active Expired - Fee Related
- 1980-03-22 DE DE19803011176 patent/DE3011176A1/de active Granted
- 1980-03-24 SE SE8002228A patent/SE8002228L/ not_active Application Discontinuation
- 1980-03-24 IT IT67451/80A patent/IT1128073B/it active
- 1980-03-24 GB GB8009859A patent/GB2045997B/en not_active Expired
- 1980-03-25 ES ES489885A patent/ES8100519A1/es not_active Expired
- 1980-03-25 JP JP3701580A patent/JPS55132538A/ja active Granted
- 1980-03-25 AT AT0159880A patent/AT368311B/de not_active IP Right Cessation
- 1980-03-25 BE BE0/199945A patent/BE882425A/fr not_active IP Right Cessation
- 1980-03-26 FR FR8006749A patent/FR2452759A1/fr active Granted

Also Published As

Publication number	Publication date
US4499574A (en)	1985-02-12
GB2045997B (en)	1982-12-01
AU535939B2 (en)	1984-04-12
BE882425A (fr)	1980-09-25
DE3011176C2 (it)	1989-06-15
AT368311B (de)	1982-10-11
AU5671980A (en)	1980-10-02
FR2452759B1 (it)	1983-03-25
IT1128073B (it)	1986-05-28
JPH0356037B2 (it)	1991-08-27
CA1164558A (en)	1984-03-27
ES489885A0 (es)	1980-11-01
GB2045997A (en)	1980-11-05
ATA159880A (de)	1982-01-15
NL7902363A (nl)	1980-09-30
SE8002228L (sv)	1980-09-28
JPS55132538A (en)	1980-10-15
FR2452759A1 (fr)	1980-10-24
ES8100519A1 (es)	1980-11-01
DE3011176A1 (de)	1980-10-09

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