SE410808B - Uppteckningsberare - Google Patents

Uppteckningsberare

Info

Publication number
SE410808B
SE410808B SE7501407A SE7501407A SE410808B SE 410808 B SE410808 B SE 410808B SE 7501407 A SE7501407 A SE 7501407A SE 7501407 A SE7501407 A SE 7501407A SE 410808 B SE410808 B SE 410808B
Authority
SE
Sweden
Prior art keywords
record carrier
record
carrier
Prior art date
Application number
SE7501407A
Other languages
English (en)
Swedish (sv)
Other versions
SE7501407L (ja
Inventor
Lang H De
G 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 SE7501407L publication Critical patent/SE7501407L/xx
Publication of SE410808B publication Critical patent/SE410808B/xx

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
SE7501407A 1974-02-12 1975-02-10 Uppteckningsberare SE410808B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7401858A NL7401858A (nl) 1974-02-12 1974-02-12 Registratiedrager waarop informatie is aange- t in een optisch uitleesbare struktuur.

Publications (2)

Publication Number Publication Date
SE7501407L SE7501407L (ja) 1975-08-13
SE410808B true SE410808B (sv) 1979-11-05

Family

ID=19820729

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7501407A SE410808B (sv) 1974-02-12 1975-02-10 Uppteckningsberare

Country Status (16)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7510035A (nl) * 1975-08-26 1977-03-01 Philips Nv Registratiedrager met een optisch uitleesbare, langs sporen gerangschikte, informatiestruktuur en inrichting voor het uitlezen daarvan.
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 (nl) * 1978-04-03 1979-10-05 Philips Nv Registratiedrager met een optisch uitleesbare fase- struktuur en inrichting voor het uitlezen.
JPS57103132A (en) * 1980-12-16 1982-06-26 Matsushita Electric Ind Co Ltd Recording information carrier and its recorder and reproducer
NL8100098A (nl) * 1981-01-12 1982-08-02 Philips Nv Registratiedrager met optisch uitleesbare informatiestruktuur.
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
EP0351953B1 (en) * 1988-06-20 1995-08-16 Mitsubishi Denki Kabushiki Kaisha Optical head with a tilt correction servo mechanism

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
FR2014594B1 (ja) * 1968-07-15 1974-02-22 Ibm
JPS5117405B2 (ja) * 1972-05-15 1976-06-02

Also Published As

Publication number Publication date
DK138567B (da) 1978-09-25
AU497709B2 (en) 1979-01-04
NO750416L (ja) 1975-08-13
GB1501141A (en) 1978-02-15
SE7501407L (ja) 1975-08-13
DE2503975A1 (de) 1975-08-14
JPS50119517A (ja) 1975-09-19
AU7802575A (en) 1976-08-12
BE825379A (fr) 1975-08-11
CA1047644A (en) 1979-01-30
DK45475A (ja) 1975-10-06
DK138567C (ja) 1979-03-05
NL7401858A (nl) 1975-08-14
AT338889B (de) 1977-09-26
ZA75131B (en) 1976-08-25
IT1031581B (it) 1979-05-10
FR2260911B1 (ja) 1982-03-05
CH592350A5 (ja) 1977-10-31
ES452770A1 (es) 1977-10-01
FR2260911A1 (ja) 1975-09-05
ATA98275A (de) 1977-01-15
ES434588A1 (es) 1977-03-16

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