GB1527763A – Apparatus for reading a disc-shaped record
– Google Patents
GB1527763A – Apparatus for reading a disc-shaped record
– Google Patents
Apparatus for reading a disc-shaped record
Info
Publication number
GB1527763A
GB1527763A
GB40573/75A
GB4057375A
GB1527763A
GB 1527763 A
GB1527763 A
GB 1527763A
GB 40573/75 A
GB40573/75 A
GB 40573/75A
GB 4057375 A
GB4057375 A
GB 4057375A
GB 1527763 A
GB1527763 A
GB 1527763A
Authority
GB
United Kingdom
Prior art keywords
disc
reading
oct
coupled
shaped record
Prior art date
1974-10-07
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
GB40573/75A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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.)
1974-10-07
Filing date
1975-10-03
Publication date
1978-10-11
1975-10-03
Application filed by Philips Electronic and Associated Industries Ltd
filed
Critical
Philips Electronic and Associated Industries Ltd
1978-10-11
Publication of GB1527763A
publication
Critical
patent/GB1527763A/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
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
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
G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
G11B7/13—Optical detectors therefor
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N9/00—Details of colour television systems
H04N9/79—Processing of colour television signals in connection with recording
H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
H04N9/83—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
H04N9/835—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal involving processing of the sound signal
Abstract
1527763 Optical playback PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 3 Oct 1975 [7 Oct 1974] 40573/75 Heading G5R In an optical playback arrangement of the type described in Specification 1,451,799, the output of the two photo-cells 13a, 13c in the played back signal channel are (a) applied to a subtract circuit 16 which is coupled to a first processing circuit responsive to the high frequency components of the played back signal and (b) to an addition circuit 18 which is coupled to a second processing circuit responsive to the low frequency components in the signal.
GB40573/75A
1974-10-07
1975-10-03
Apparatus for reading a disc-shaped record
Expired
GB1527763A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
NL7413162A
NL7413162A
(en)
1974-10-07
1974-10-07
DEVICE FOR READING A DISK-SHAPED RECORDING CARRIER.
Publications (1)
Publication Number
Publication Date
GB1527763A
true
GB1527763A
(en)
1978-10-11
Family
ID=19822226
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB40573/75A
Expired
GB1527763A
(en)
1974-10-07
1975-10-03
Apparatus for reading a disc-shaped record
Country Status (14)
Country
Link
US
(1)
US3962721A
(en)
JP
(1)
JPS5935089B2
(en)
AT
(1)
AT342678B
(en)
AU
(1)
AU499190B2
(en)
BR
(1)
BR7506497A
(en)
CA
(1)
CA1070832A
(en)
DE
(1)
DE2542443C2
(en)
ES
(1)
ES441519A1
(en)
FR
(1)
FR2287817A1
(en)
GB
(1)
GB1527763A
(en)
IT
(1)
IT1047343B
(en)
NL
(1)
NL7413162A
(en)
NO
(1)
NO753353L
(en)
SE
(1)
SE409522B
(en)
Families Citing this family (24)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2325987A1
(en)
*
1975-09-29
1977-04-22
Thomson Brandt
OPTICAL READING DEVICE FOR A RECORDING
NL7600843A
(en)
*
1976-01-28
1977-08-01
Philips Nv
DEVICE FOR READING A RECORDING CARRIER ON WHICH INFORMATION, FOR EXAMPLE AND / OR AUDIO INFORMATION, HAS BEEN STORED.
US4030835A
(en)
*
1976-05-28
1977-06-21
Rca Corporation
Defect detection system
GB1532345A
(en)
*
1976-06-25
1978-11-15
Hitachi Ltd
Information play-back apparatus
JPS538107A
(en)
*
1976-07-12
1978-01-25
Mansei Kogyo Kk
Optical information reader
GB1570799A
(en)
*
1977-01-28
1980-07-09
Jacobs E
Binary coded digital optical record
GB2048547B
(en)
*
1979-03-27
1983-03-30
Shibaura Denki Kk
Video disc and playback system therefore
FR2481501B1
(en)
*
1980-04-25
1985-09-13
Philips Nv
RECORDING CARRIER COMPRISING AN OPTICALLY READABLE INFORMATION STRUCTURE AND DEVICE FOR READING SUCH A RECORDING CARRIER
US4484319A
(en)
*
1980-09-19
1984-11-20
Matsushita Electric Industrial Co., Ltd.
Apparatus for locating a track on disc-like optical information carriers
JPS5766533A
(en)
*
1980-10-09
1982-04-22
Olympus Optical Co Ltd
Optical information reader
US4414658A
(en)
*
1981-06-12
1983-11-08
Mcdonnell Douglas Corporation
Linear tracking arrangement in a photographic disc type information containing system
NL8204555A
(en)
*
1981-11-25
1983-06-16
Hitachi Ltd
DEVICE FOR RECORDING AND DISPLAYING INFORMATION.
JPS58150145A
(en)
*
1982-03-03
1983-09-06
Toshiba Corp
Tracking control circuit of optical digital disc player
JPS5919250A
(en)
*
1982-07-21
1984-01-31
Hitachi Ltd
Recording and reproducing device of optical information
JPS6020328A
(en)
*
1983-07-14
1985-02-01
Olympus Optical Co Ltd
Optical disk device
JPS59132430A
(en)
*
1983-12-12
1984-07-30
Hitachi Ltd
Information reproducing device
JPS60250997A
(en)
*
1984-05-28
1985-12-11
岩崎 孝生
Writing utensil having perfume
US4752922A
(en)
*
1984-07-06
1988-06-21
Storage Technology Partners 11
Optical disk recording and readout system having read, write and coarse light beams
EP0207517B1
(en)
*
1985-07-05
1991-02-27
Mitsubishi Denki Kabushiki Kaisha
Optical pickup apparatus
NL8702071A
(en)
*
1987-09-03
1989-04-03
Philips Nv
DEVICE FOR POINT SCANNING OF AN OBJECT.
JPH0231791U
(en)
*
1988-08-25
1990-02-28
US6310691B2
(en)
*
1998-04-24
2001-10-30
Hewlett-Packard Company
Technique for scanning documents using a spiral path locus
US7565063B2
(en)
*
2002-10-16
2009-07-21
Hasbro, Inc.
Media formatting and system for interactive game programming
US7457531B2
(en)
*
2002-10-16
2008-11-25
Hasbro, Inc.
Low bandwidth image system
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3207904A
(en)
*
1962-04-09
1965-09-21
Western Electric Co
Electro-optical article positioning system
US3634689A
(en)
*
1969-04-22
1972-01-11
Hitachi Ltd
Automatic position or condition control devices using relative rotation, linear positioning, and magnification
US3679307A
(en)
*
1970-02-19
1972-07-25
Ati Inc
Non-contacting optical probe
US3657547A
(en)
*
1971-01-20
1972-04-18
Us Army
Monopulse gain balanced amplification system using pilot carrier techniques
NL173343C
(en)
*
1972-03-29
1984-01-02
Philips Nv
Apparatus for reading a disc-shaped record carrier with image and / or audio signals encoded in optical form.
FR2212070A6
(en)
*
1972-08-25
1974-07-19
Thomson Csf
1974
1974-10-07
NL
NL7413162A
patent/NL7413162A/en
not_active
Application Discontinuation
1974-12-06
US
US05/530,276
patent/US3962721A/en
not_active
Expired – Lifetime
1975
1975-09-24
DE
DE2542443A
patent/DE2542443C2/en
not_active
Expired
1975-10-03
IT
IT69467/75A
patent/IT1047343B/en
active
1975-10-03
GB
GB40573/75A
patent/GB1527763A/en
not_active
Expired
1975-10-03
NO
NO753353A
patent/NO753353L/no
unknown
1975-10-03
SE
SE7511102A
patent/SE409522B/en
unknown
1975-10-03
CA
CA237,012A
patent/CA1070832A/en
not_active
Expired
1975-10-04
ES
ES441519A
patent/ES441519A1/en
not_active
Expired
1975-10-06
FR
FR7530503A
patent/FR2287817A1/en
active
Granted
1975-10-06
AT
AT761175A
patent/AT342678B/en
not_active
IP Right Cessation
1975-10-06
BR
BR7506497*A
patent/BR7506497A/en
unknown
1975-10-06
JP
JP50119881A
patent/JPS5935089B2/en
not_active
Expired
1975-10-07
AU
AU85486/75A
patent/AU499190B2/en
not_active
Expired
Also Published As
Publication number
Publication date
JPS5935089B2
(en)
1984-08-27
AU8548675A
(en)
1977-04-21
SE7511102L
(en)
1976-04-08
FR2287817A1
(en)
1976-05-07
AT342678B
(en)
1978-04-10
ATA761175A
(en)
1977-08-15
AU499190B2
(en)
1979-04-05
NO753353L
(en)
1976-04-08
NL7413162A
(en)
1976-04-09
FR2287817B1
(en)
1978-09-22
DE2542443C2
(en)
1982-04-15
JPS5164944A
(en)
1976-06-04
SE409522B
(en)
1979-08-20
BR7506497A
(en)
1976-08-10
CA1070832A
(en)
1980-01-29
US3962721A
(en)
1976-06-08
IT1047343B
(en)
1980-09-10
ES441519A1
(en)
1977-04-01
DE2542443A1
(en)
1976-04-15
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Legal Events
Date
Code
Title
Description
1979-01-24
PS
Patent sealed [section 19, patents act 1949]
1985-06-12
PCNP
Patent ceased through non-payment of renewal fee
