PL205453A1 - Urzadzenie do odczytu nosnika zapisu odbijajacego promieniowanie - Google Patents

Urzadzenie do odczytu nosnika zapisu odbijajacego promieniowanie

Info

Publication number
PL205453A1
PL205453A1 PL20545378A PL20545378A PL205453A1 PL 205453 A1 PL205453 A1 PL 205453A1 PL 20545378 A PL20545378 A PL 20545378A PL 20545378 A PL20545378 A PL 20545378A PL 205453 A1 PL205453 A1 PL 205453A1
Authority
PL
Poland
Prior art keywords
radiation
reading
media recording
recording
media
Prior art date
Application number
PL20545378A
Other languages
English (en)
Other versions
PL113996B1 (en
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 PL205453A1 publication Critical patent/PL205453A1/pl
Publication of PL113996B1 publication Critical patent/PL113996B1/pl

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/0908Disposition 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 for focusing only
    • G11B7/0909Disposition 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 for focusing only by astigmatic methods
PL1978205453A 1977-03-22 1978-03-20 Device for reading out radiation reflecting informationcarriers PL113996B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7703076A NL7703076A (nl) 1977-03-22 1977-03-22 Inrichting voor het uitlezen van een stralings- reflekterende registratiedrager.

Publications (2)

Publication Number Publication Date
PL205453A1 true PL205453A1 (pl) 1978-12-18
PL113996B1 PL113996B1 (en) 1981-01-31

Family

ID=19828205

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1978205453A PL113996B1 (en) 1977-03-22 1978-03-20 Device for reading out radiation reflecting informationcarriers

Country Status (20)

Country Link
JP (1) JPS53117403A (pl)
AR (1) AR214353A1 (pl)
AT (1) AT369580B (pl)
AU (1) AU510218B2 (pl)
BE (1) BE865083A (pl)
BR (1) BR7801690A (pl)
CA (1) CA1109560A (pl)
CH (1) CH627016A5 (pl)
DE (1) DE2810616A1 (pl)
DK (1) DK145868C (pl)
ES (1) ES468055A1 (pl)
FR (1) FR2385171A1 (pl)
IT (1) IT1093316B (pl)
MX (1) MX143603A (pl)
NL (1) NL7703076A (pl)
NZ (1) NZ186732A (pl)
PL (1) PL113996B1 (pl)
SE (1) SE424676B (pl)
YU (1) YU39193B (pl)
ZA (1) ZA78216B (pl)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290132A (en) * 1977-05-11 1981-09-15 Pioneer Electronic Corporation Focus servo device for use in an optical information read-out device
FR2460022B1 (fr) * 1979-06-25 1987-09-11 Hitachi Ltd Systeme optique de reproduction d'informations
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
JPS59125727U (ja) * 1983-02-15 1984-08-24 パイオニア株式会社 光学式情報ピツクアツプ装置
NL8400674A (nl) * 1984-03-02 1985-10-01 Philips Nv Inrichting voor het inschrijven en/of uitlezen van informatie in een spoor van een reflekterende registratiedrager, met een fokusregeling met verminderde spot offsetgevoeligheid.
JPS6139942A (ja) * 1984-08-01 1986-02-26 Matsushita Electric Ind Co Ltd 光ピツクアツプ
US4609813A (en) * 1985-03-18 1986-09-02 International Business Machines Corporation Optical systems employing ovate light beams
JPS6310326A (ja) * 1986-07-01 1988-01-16 Sanyo Electric Co Ltd 光ピツクアツプ装置
DE3828146A1 (de) * 1988-08-19 1990-02-22 Philips Patentverwaltung Elektrodynamischer aktuator fuer eine optische einschreib- und ausleseeinheit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2271590B1 (pl) * 1974-01-15 1978-12-01 Thomson Brandt
NL182990C (nl) * 1975-07-07 1988-06-16 Philips Nv Inrichting voor het uitlezen van een stralingsreflekterende registratiedrager.
FR2325987A1 (fr) * 1975-09-29 1977-04-22 Thomson Brandt Dispositif de lecture optique d'un enregistrement
GB1532345A (en) * 1976-06-25 1978-11-15 Hitachi Ltd Information play-back apparatus
JPS5337722A (en) * 1976-09-20 1978-04-07 Ebata Shiyouji Kk Method of producing concrete piles
NL7703077A (nl) * 1977-03-22 1978-09-26 Philips Nv Inrichting voor het uitlezen van een stralings- reflekterende registratiedrager.

Also Published As

Publication number Publication date
ZA78216B (en) 1979-08-29
AU510218B2 (en) 1980-06-12
YU67378A (en) 1982-06-30
NL7703076A (nl) 1978-09-26
PL113996B1 (en) 1981-01-31
CH627016A5 (en) 1981-12-15
ES468055A1 (es) 1978-11-16
BE865083A (fr) 1978-09-20
YU39193B (en) 1984-08-31
DE2810616A1 (de) 1978-09-28
JPS53117403A (en) 1978-10-13
ATA196578A (de) 1982-05-15
BR7801690A (pt) 1979-01-02
DK145868B (da) 1983-03-21
NZ186732A (en) 1981-02-11
IT1093316B (it) 1985-07-19
DK145868C (da) 1983-09-12
SE424676B (sv) 1982-08-02
MX143603A (es) 1981-06-05
AU3429478A (en) 1979-09-27
SE7803138L (sv) 1978-09-23
IT7821340A0 (it) 1978-03-17
DK120578A (da) 1978-09-23
CA1109560A (en) 1981-09-22
AR214353A1 (es) 1979-05-31
FR2385171A1 (fr) 1978-10-20
AT369580B (de) 1983-01-10

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