NL7703076A - DEVICE FOR READING A RADIATION-REFLECTING RECORD CARRIER. - Google Patents

DEVICE FOR READING A RADIATION-REFLECTING RECORD CARRIER.

Info

Publication number
NL7703076A
NL7703076A NL7703076A NL7703076A NL7703076A NL 7703076 A NL7703076 A NL 7703076A NL 7703076 A NL7703076 A NL 7703076A NL 7703076 A NL7703076 A NL 7703076A NL 7703076 A NL7703076 A NL 7703076A
Authority
NL
Netherlands
Prior art keywords
radiation
reading
record carrier
reflecting record
reflecting
Prior art date
Application number
NL7703076A
Other languages
Dutch (nl)
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
Priority to NL7703076A priority Critical patent/NL7703076A/en
Priority to ZA00780216A priority patent/ZA78216B/en
Priority to AR270983A priority patent/AR214353A1/en
Priority to DE19782810616 priority patent/DE2810616A1/en
Priority to CA298,999A priority patent/CA1109560A/en
Priority to DK120578A priority patent/DK145868C/en
Priority to MX172816A priority patent/MX143603A/en
Priority to IT21340/78A priority patent/IT1093316B/en
Priority to SE7803138A priority patent/SE424676B/en
Priority to AU34294/78A priority patent/AU510218B2/en
Priority to CH302678A priority patent/CH627016A5/en
Priority to BR7801690A priority patent/BR7801690A/en
Priority to AT0196578A priority patent/AT369580B/en
Priority to PL1978205453A priority patent/PL113996B1/en
Priority to NZ186732A priority patent/NZ186732A/en
Priority to BE186087A priority patent/BE865083A/en
Priority to ES468055A priority patent/ES468055A1/en
Priority to YU00673/78A priority patent/YU39193B/en
Priority to JP3182778A priority patent/JPS53117403A/en
Priority to FR7808294A priority patent/FR2385171A1/en
Publication of NL7703076A publication Critical patent/NL7703076A/en

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
    • G11B7/08—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
    • G11B7/0908—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 for focusing only
    • G11B7/0909—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 for focusing only by astigmatic methods
NL7703076A 1977-03-22 1977-03-22 DEVICE FOR READING A RADIATION-REFLECTING RECORD CARRIER. NL7703076A (en)

Priority Applications (20)

Application Number Priority Date Filing Date Title
NL7703076A NL7703076A (en) 1977-03-22 1977-03-22 DEVICE FOR READING A RADIATION-REFLECTING RECORD CARRIER.
ZA00780216A ZA78216B (en) 1977-03-22 1978-01-12 Apparatus for reading a radiation reflecting record carrier
AR270983A AR214353A1 (en) 1977-03-22 1978-02-06 READING DEVICE OF A RADIATION REFLECTOR RECORDING CARRIER
DE19782810616 DE2810616A1 (en) 1977-03-22 1978-03-11 DEVICE FOR READING A RADIATION REFLECTING RECORDING CARRIER
CA298,999A CA1109560A (en) 1977-03-22 1978-03-15 Apparatus for reading a radiation-reflecting record carrier
DK120578A DK145868C (en) 1977-03-22 1978-03-17 DEVICE FOR READING A RADIATOR REFLECTING REGISTRAR AND INCLUDING A FOCUS ERROR DETECTOR
MX172816A MX143603A (en) 1977-03-22 1978-03-17 APPARATUS FOR READING A RADIATION REFLECTION RECORDING CARRIER
IT21340/78A IT1093316B (en) 1977-03-22 1978-03-17 APPARATUS FOR READING A RECORDING SUPPORT ELEMENT, OF THE RADIATION REFLECTION TYPE
SE7803138A SE424676B (en) 1977-03-22 1978-03-20 DEVICE FOR READING A RADIATOR REFLECTING RECORDER
AU34294/78A AU510218B2 (en) 1977-03-22 1978-03-20 Optically reading a reflecting record carrier
CH302678A CH627016A5 (en) 1977-03-22 1978-03-20 Apparatus for reading out a radiation-reflecting recording carrier
BR7801690A BR7801690A (en) 1977-03-22 1978-03-20 APPLIANCE FOR READING A RADIATION REFLECTOR RECORDER
AT0196578A AT369580B (en) 1977-03-22 1978-03-20 DEVICE FOR READING A RADIATION-REFLECTING MARKER
PL1978205453A PL113996B1 (en) 1977-03-22 1978-03-20 Device for reading out radiation reflecting informationcarriers
NZ186732A NZ186732A (en) 1977-03-22 1978-03-20 Focussing of read beam on optically readable record by astigmatic lens
BE186087A BE865083A (en) 1977-03-22 1978-03-20 DEVICE FOR READING A RADIATION-REFLECTING RECORD HOLDER
ES468055A ES468055A1 (en) 1977-03-22 1978-03-20 Reflection type record carrier reader
YU00673/78A YU39193B (en) 1977-03-22 1978-03-21 Apparatus for reading a radiation-reflecting record carrier
JP3182778A JPS53117403A (en) 1977-03-22 1978-03-22 Reflection type record carrier reader
FR7808294A FR2385171A1 (en) 1977-03-22 1978-03-22 DEVICE FOR READING A RADIATION-REFLECTING RECORD HOLDER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7703076A NL7703076A (en) 1977-03-22 1977-03-22 DEVICE FOR READING A RADIATION-REFLECTING RECORD CARRIER.

Publications (1)

Publication Number Publication Date
NL7703076A true NL7703076A (en) 1978-09-26

Family

ID=19828205

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7703076A NL7703076A (en) 1977-03-22 1977-03-22 DEVICE FOR READING A RADIATION-REFLECTING RECORD CARRIER.

Country Status (20)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1131361A (en) * 1977-05-11 1982-09-07 Fumitaka Kotaka Focus servo device for use in optical read-out device of information
FR2460022B1 (en) * 1979-06-25 1987-09-11 Hitachi Ltd OPTICAL INFORMATION REPRODUCING SYSTEM
NL7907216A (en) * 1979-09-28 1981-03-31 Philips Nv OPTICAL FOCUS ERROR DETECTION SYSTEM.
JPS59125727U (en) * 1983-02-15 1984-08-24 パイオニア株式会社 Optical information pickup device
NL8400674A (en) * 1984-03-02 1985-10-01 Philips Nv DEVICE FOR REGISTERING AND / OR READING INFORMATION IN A TRACK OF A REFLECTIVE RECORD CARRIER WITH A FOCUS CONTROL WITH REDUCED SPOT OFFSET SENSITIVITY.
JPS6139942A (en) * 1984-08-01 1986-02-26 Matsushita Electric Ind Co Ltd Optical pickup
US4609813A (en) * 1985-03-18 1986-09-02 International Business Machines Corporation Optical systems employing ovate light beams
JPS6310326A (en) * 1986-07-01 1988-01-16 Sanyo Electric Co Ltd Optical pickup device
DE3828146A1 (en) * 1988-08-19 1990-02-22 Philips Patentverwaltung ELECTRODYNAMIC ACTUATOR FOR AN OPTICAL WRITE-IN AND READ-OUT UNIT

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2271590B1 (en) * 1974-01-15 1978-12-01 Thomson Brandt
NL182990C (en) * 1975-07-07 1988-06-16 Philips Nv DEVICE FOR READING A RADIATION-REFLECTING RECORD CARRIER.
FR2325987A1 (en) * 1975-09-29 1977-04-22 Thomson Brandt OPTICAL READING DEVICE FOR A RECORDING
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 (en) * 1977-03-22 1978-09-26 Philips Nv DEVICE FOR READING A RADIATION-REFLECTING RECORD CARRIER.

Also Published As

Publication number Publication date
ES468055A1 (en) 1978-11-16
IT1093316B (en) 1985-07-19
SE424676B (en) 1982-08-02
JPS53117403A (en) 1978-10-13
BR7801690A (en) 1979-01-02
CH627016A5 (en) 1981-12-15
AU510218B2 (en) 1980-06-12
AT369580B (en) 1983-01-10
ZA78216B (en) 1979-08-29
NZ186732A (en) 1981-02-11
DK120578A (en) 1978-09-23
DK145868B (en) 1983-03-21
YU67378A (en) 1982-06-30
CA1109560A (en) 1981-09-22
SE7803138L (en) 1978-09-23
MX143603A (en) 1981-06-05
PL113996B1 (en) 1981-01-31
ATA196578A (en) 1982-05-15
AR214353A1 (en) 1979-05-31
YU39193B (en) 1984-08-31
FR2385171A1 (en) 1978-10-20
IT7821340A0 (en) 1978-03-17
DE2810616A1 (en) 1978-09-28
DK145868C (en) 1983-09-12
AU3429478A (en) 1979-09-27
BE865083A (en) 1978-09-20
PL205453A1 (en) 1978-12-18

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Legal Events

Date Code Title Description
BV The patent application has lapsed