DK138567B - Registration carrier on which information is registered in an optically readable structure, as well as apparatus for reading such a registration carrier. - Google Patents

Registration carrier on which information is registered in an optically readable structure, as well as apparatus for reading such a registration carrier.

Info

Publication number
DK138567B
DK138567B DK45475AA DK45475A DK138567B DK 138567 B DK138567 B DK 138567B DK 45475A A DK45475A A DK 45475AA DK 45475 A DK45475 A DK 45475A DK 138567 B DK138567 B DK 138567B
Authority
DK
Denmark
Prior art keywords
registration carrier
registered
reading
information
well
Prior art date
Application number
DK45475AA
Other languages
Danish (da)
Other versions
DK45475A (en
DK138567C (en
Inventor
Hendrik De Lang
Gijsbertus Bouwhuis
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.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Publication of DK45475A publication Critical patent/DK45475A/da
Publication of DK138567B publication Critical patent/DK138567B/en
Application granted granted Critical
Publication of DK138567C publication Critical patent/DK138567C/da

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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • 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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals
    • 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
DK45475AA 1974-02-12 1975-02-07 Registration carrier on which information is registered in an optically readable structure, as well as apparatus for reading such a registration carrier. DK138567B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7401858A NL7401858A (en) 1974-02-12 1974-02-12 REGISTRATION CARRIER ON WHICH INFORMATION IS INDICATED IN AN OPTICALLY READABLE STRUCTURE.

Publications (3)

Publication Number Publication Date
DK45475A DK45475A (en) 1975-10-06
DK138567B true DK138567B (en) 1978-09-25
DK138567C DK138567C (en) 1979-03-05

Family

ID=19820729

Family Applications (1)

Application Number Title Priority Date Filing Date
DK45475AA DK138567B (en) 1974-02-12 1975-02-07 Registration carrier on which information is registered in an optically readable structure, as well as apparatus for reading such a registration carrier.

Country Status (16)

Country Link
JP (1) JPS50119517A (en)
AT (1) AT338889B (en)
AU (1) AU497709B2 (en)
BE (1) BE825379A (en)
CA (1) CA1047644A (en)
CH (1) CH592350A5 (en)
DE (1) DE2503975A1 (en)
DK (1) DK138567B (en)
ES (2) ES434588A1 (en)
FR (1) FR2260911B1 (en)
GB (1) GB1501141A (en)
IT (1) IT1031581B (en)
NL (1) NL7401858A (en)
NO (1) NO750416L (en)
SE (1) SE410808B (en)
ZA (1) ZA75131B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7510035A (en) * 1975-08-26 1977-03-01 Philips Nv REGISTRATION CARRIER WITH AN OPTICALLY READABLE, TRACK-SIZED, INFORMATION STRUCTURE AND DEVICE FOR READING THIS.
JPS5363002A (en) * 1976-11-18 1978-06-06 Sony Corp Signal recording system and disk type medium for recording signal
US4161752A (en) * 1977-06-28 1979-07-17 International Business Machines Corporation High density video disk having two pit depths
NL7803517A (en) * 1978-04-03 1979-10-05 Philips Nv RECORD CARRIER WITH AN OPTICALLY READABLE PHASE STRUCTURE AND DEVICE FOR READING.
JPS57103132A (en) * 1980-12-16 1982-06-26 Matsushita Electric Ind Co Ltd Recording information carrier and its recorder and reproducer
NL8100098A (en) * 1981-01-12 1982-08-02 Philips Nv RECORD CARRIER WITH OPTICALLY READABLE INFORMATION STRUCTURE.
GB8309447D0 (en) * 1983-04-07 1983-05-11 Combined Tech Corp Plc Optical data storage
US4623784A (en) * 1984-12-20 1986-11-18 Drexler Technology Corporation Laser recording apparatus with off-center lens and error detection
DE68923833T2 (en) * 1988-06-20 1996-06-13 Mitsubishi Electric Corp Optical head with tilt correction servomechanism.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314052A (en) * 1963-04-12 1967-04-11 Ibm Light modulation system
DE1932164B2 (en) * 1968-07-15 1972-04-06 International Business Machines Corp , Armonk, NY (V St A ) PROCESS FOR INSERTING METAL IN PART AREAS OF A SUBSTRATE ESPECIALLY CONSISTING OF SEMICONDUCTOR MATERIAL
JPS5117405B2 (en) * 1972-05-15 1976-06-02

Also Published As

Publication number Publication date
ES434588A1 (en) 1977-03-16
AU497709B2 (en) 1979-01-04
SE7501407L (en) 1975-08-13
CH592350A5 (en) 1977-10-31
FR2260911A1 (en) 1975-09-05
ZA75131B (en) 1976-08-25
NO750416L (en) 1975-08-13
GB1501141A (en) 1978-02-15
IT1031581B (en) 1979-05-10
DE2503975A1 (en) 1975-08-14
ES452770A1 (en) 1977-10-01
DK45475A (en) 1975-10-06
AT338889B (en) 1977-09-26
NL7401858A (en) 1975-08-14
DK138567C (en) 1979-03-05
AU7802575A (en) 1976-08-12
SE410808B (en) 1979-11-05
CA1047644A (en) 1979-01-30
BE825379A (en) 1975-08-11
ATA98275A (en) 1977-01-15
FR2260911B1 (en) 1982-03-05
JPS50119517A (en) 1975-09-19

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