AU7856675A – Apparatus for reading a disc-shaped record carrier
– Google Patents
AU7856675A – Apparatus for reading a disc-shaped record carrier
– Google Patents
Apparatus for reading a disc-shaped record carrier
Info
Publication number
AU7856675A
AU7856675A
AU78566/75A
AU7856675A
AU7856675A
AU 7856675 A
AU7856675 A
AU 7856675A
AU 78566/75 A
AU78566/75 A
AU 78566/75A
AU 7856675 A
AU7856675 A
AU 7856675A
AU 7856675 A
AU7856675 A
AU 7856675A
Authority
AU
Australia
Prior art keywords
disc
reading
record carrier
shaped record
shaped
Prior art date
1974-02-28
Legal status (The legal status 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 status listed.)
Expired
Application number
AU78566/75A
Other versions
AU497549B2
(en
Inventor
P. J. M Janssen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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.)
1974-02-28
Filing date
1975-02-26
Publication date
1976-08-26
1975-02-26
Application filed by Philips Gloeilampenfabrieken NV
filed
Critical
Philips Gloeilampenfabrieken NV
1976-08-26
Publication of AU7856675A
publication
Critical
patent/AU7856675A/en
1978-12-14
Application granted
granted
Critical
1978-12-14
Publication of AU497549B2
publication
Critical
patent/AU497549B2/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G11—INFORMATION STORAGE
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
G11B17/02—Details
G11B17/022—Positioning or locking of single discs
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
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
G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
G11B7/0953—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
AU78566/75A
1974-02-28
1975-02-26
Apparatus for reading a disc-shaped record carrier
Expired
AU497549B2
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
NLAANVRAGE7402767,A
NL177780C
(en)
1974-02-28
1974-02-28
Apparatus for reading a disc-shaped record carrier to be placed on a turntable.
NLNL7402767
1974-02-28
Publications (2)
Publication Number
Publication Date
AU7856675A
true
AU7856675A
(en)
1976-08-26
AU497549B2
AU497549B2
(en)
1978-12-14
Family
ID=19820865
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
AU78566/75A
Expired
AU497549B2
(en)
1974-02-28
1975-02-26
Apparatus for reading a disc-shaped record carrier
Country Status (15)
Country
Link
US
(1)
US3934080A
(en)
JP
(1)
JPS5838852B2
(en)
AT
(1)
AT355819B
(en)
AU
(1)
AU497549B2
(en)
BE
(1)
BE826027A
(en)
CA
(1)
CA1059620A
(en)
CH
(1)
CH592351A5
(en)
DE
(1)
DE2506452C2
(en)
DK
(1)
DK140160B
(en)
ES
(1)
ES435084A1
(en)
FR
(1)
FR2262848B3
(en)
GB
(1)
GB1504208A
(en)
IT
(1)
IT1033176B
(en)
NL
(1)
NL177780C
(en)
SE
(1)
SE409150B
(en)
Families Citing this family (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4918678A
(en)
*
1977-12-12
1990-04-17
Dolby Ray Milton
Disc reproducing system for compensating mechanical imperfections
JPS5786173A
(en)
*
1980-11-17
1982-05-29
Toshiba Corp
Recorder and reproducer
NL8200208A
(en)
*
1982-01-21
1983-08-16
Philips Nv
DEVICE FOR READING A DISC REGISTRATION CARRIER.
US4788676A
(en)
*
1986-12-19
1988-11-29
Dennis James T
Record player
DE19806898A1
(en)
*
1998-02-19
1999-08-26
Thomson Brandt Gmbh
Device for reading and / or writing disc-shaped recording media
CN113324150A
(en)
*
2021-06-01
2021-08-31
北京华之峰智能技术有限公司
Camera for recording channel information of flight area
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2863668A
(en)
*
1953-04-21
1958-12-09
Robert P Lathrop
Apparatus for establishing concentric operation of phonograph sound grooves
US3000005A
(en)
*
1957-10-29
1961-09-12
Rca Corp
Off-center indicator
1974
1974-02-28
NL
NLAANVRAGE7402767,A
patent/NL177780C/en
not_active
IP Right Cessation
1974-06-10
US
US05/477,904
patent/US3934080A/en
not_active
Expired – Lifetime
1975
1975-02-15
DE
DE2506452A
patent/DE2506452C2/en
not_active
Expired
1975-02-20
CA
CA220,671A
patent/CA1059620A/en
not_active
Expired
1975-02-25
CH
CH234475A
patent/CH592351A5/xx
not_active
IP Right Cessation
1975-02-25
IT
IT20636/75A
patent/IT1033176B/en
active
1975-02-25
GB
GB7797/75A
patent/GB1504208A/en
not_active
Expired
1975-02-25
SE
SE7502097A
patent/SE409150B/en
unknown
1975-02-25
DK
DK72775AA
patent/DK140160B/en
unknown
1975-02-26
ES
ES435084A
patent/ES435084A1/en
not_active
Expired
1975-02-26
AT
AT148375A
patent/AT355819B/en
not_active
IP Right Cessation
1975-02-26
AU
AU78566/75A
patent/AU497549B2/en
not_active
Expired
1975-02-26
BE
BE153784A
patent/BE826027A/en
unknown
1975-02-27
JP
JP50024485A
patent/JPS5838852B2/en
not_active
Expired
1975-02-28
FR
FR7506358A
patent/FR2262848B3/fr
not_active
Expired
Also Published As
Publication number
Publication date
FR2262848B3
(en)
1977-11-04
IT1033176B
(en)
1979-07-10
JPS50122204A
(en)
1975-09-25
JPS5838852B2
(en)
1983-08-25
FR2262848A1
(en)
1975-09-26
DE2506452C2
(en)
1984-12-13
GB1504208A
(en)
1978-03-15
SE409150B
(en)
1979-07-30
US3934080A
(en)
1976-01-20
AU497549B2
(en)
1978-12-14
CH592351A5
(en)
1977-10-31
ES435084A1
(en)
1976-12-16
DK140160C
(en)
1979-11-19
DK140160B
(en)
1979-06-25
DK72775A
(en)
1975-10-27
NL177780B
(en)
1985-06-17
CA1059620A
(en)
1979-07-31
AT355819B
(en)
1980-03-25
ATA148375A
(en)
1979-08-15
SE7502097L
(en)
1975-08-29
NL177780C
(en)
1985-11-18
NL7402767A
(en)
1975-09-01
BE826027A
(en)
1975-08-26
DE2506452A1
(en)
1975-09-04
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