GB1442132A – Rotating disc reader
– Google Patents
GB1442132A – Rotating disc reader
– Google Patents
Rotating disc reader
Info
Publication number
GB1442132A
GB1442132A
GB4111273A
GB4111273A
GB1442132A
GB 1442132 A
GB1442132 A
GB 1442132A
GB 4111273 A
GB4111273 A
GB 4111273A
GB 4111273 A
GB4111273 A
GB 4111273A
GB 1442132 A
GB1442132 A
GB 1442132A
Authority
GB
United Kingdom
Prior art keywords
disc
plate
rotating disc
stabilizing
record
Prior art date
1972-09-02
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
GB4111273A
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.)
1972-09-02
Filing date
1973-08-31
Publication date
1976-07-07
1973-08-31
Application filed by Philips Electronic and Associated Industries Ltd
filed
Critical
Philips Electronic and Associated Industries Ltd
1976-07-07
Publication of GB1442132A
publication
Critical
patent/GB1442132A/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
G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
Abstract
1442132 Optical playback of rotary disc records PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 31 Aug 1973 [2 Sept 1972] 41112/73 Heading G5R An optical playback unit 2 is movably mounted beneath a rotating disc record 1 which is stabilized by means of a plate disposed parallel to and above the record. In one embodiment, Fig. 1, the stabilizing plate 10 is imperforate so that the partial centrifugal expulsion of the air between the plate 10 and the disc 1 causes the disc 1 to be pressed against the plate 10 which rotates with the disc. Alternatively, Fig. 2, the stabilizing plate 12 is hinged at 13 to form a lid and has a central hole 14 through which ambient air can flow to maintain a stabilizing air cushion for the rotating disc 1.
GB4111273A
1972-09-02
1973-08-31
Rotating disc reader
Expired
GB1442132A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
NL7211997A
NL169668C
(en)
1972-09-02
1972-09-02
DEVICE FOR READING A DISC-SHAPED DATA CARRIER.
Publications (1)
Publication Number
Publication Date
GB1442132A
true
GB1442132A
(en)
1976-07-07
Family
ID=19816847
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4111273A
Expired
GB1442132A
(en)
1972-09-02
1973-08-31
Rotating disc reader
Country Status (11)
Country
Link
JP
(1)
JPS579147B2
(en)
AT
(1)
AT338887B
(en)
BE
(1)
BE804329A
(en)
CH
(1)
CH561457A5
(en)
DE
(1)
DE2341340C3
(en)
ES
(1)
ES418385A1
(en)
FR
(1)
FR2198204B1
(en)
GB
(1)
GB1442132A
(en)
IT
(1)
IT990421B
(en)
NL
(1)
NL169668C
(en)
NO
(1)
NO142057C
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2216710A
(en)
*
1988-03-14
1989-10-11
Ici Plc
Read/write system for flexible optical/magneto-optical media
US5012463A
(en)
*
1988-03-14
1991-04-30
Bernoulli Optical Systems Company
Optical read/write storage system for flexible media having bernoulli stabilization at the optical head
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
NL181693C
(en)
*
1974-11-29
1987-10-01
Philips Nv
DEVICE FOR READING A RADIUS-REFLECTING REGISTRATION CARRIER BY OPTICAL ROAD.
FR2312832A1
(en)
*
1975-05-30
1976-12-24
Thomson Brandt
STABILIZATION DEVICE FOR SOFT DISCS, AND IN PARTICULAR VIDEO-DISCS, AND READING APPARATUS SUITABLE FOR THIS DEVICE
JPS5952454A
(en)
*
1982-09-18
1984-03-27
Nippon Telegr & Teleph Corp
Optical disc device
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS4217806Y1
(en)
*
1964-04-30
1967-10-16
FR2073651A5
(en)
*
1969-12-23
1971-10-01
Licentia Gmbh
JPS5018374A
(en)
*
1973-06-22
1975-02-26
1972
1972-09-02
NL
NL7211997A
patent/NL169668C/en
not_active
IP Right Cessation
1973
1973-08-16
DE
DE19732341340
patent/DE2341340C3/en
not_active
Expired
1973-08-29
FR
FR7331190A
patent/FR2198204B1/fr
not_active
Expired
1973-08-29
NO
NO340373A
patent/NO142057C/en
unknown
1973-08-30
AT
AT756273A
patent/AT338887B/en
not_active
IP Right Cessation
1973-08-30
JP
JP9674773A
patent/JPS579147B2/ja
not_active
Expired
1973-08-30
CH
CH1246473A
patent/CH561457A5/xx
not_active
IP Right Cessation
1973-08-30
IT
IT5224073A
patent/IT990421B/en
active
1973-08-31
GB
GB4111273A
patent/GB1442132A/en
not_active
Expired
1973-08-31
BE
BE135212A
patent/BE804329A/en
unknown
1973-08-31
ES
ES418385A
patent/ES418385A1/en
not_active
Expired
Cited By (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2216710A
(en)
*
1988-03-14
1989-10-11
Ici Plc
Read/write system for flexible optical/magneto-optical media
US5012463A
(en)
*
1988-03-14
1991-04-30
Bernoulli Optical Systems Company
Optical read/write storage system for flexible media having bernoulli stabilization at the optical head
GB2216710B
(en)
*
1988-03-14
1992-09-02
Ici Plc
Optical or magneto-optical data system
Also Published As
Publication number
Publication date
BE804329A
(en)
1974-02-28
DE2341340B2
(en)
1981-06-04
DE2341340C3
(en)
1982-02-11
NO142057C
(en)
1980-06-18
FR2198204B1
(en)
1976-11-19
AT338887B
(en)
1977-09-26
NL169668C
(en)
1982-08-02
ES418385A1
(en)
1976-03-16
CH561457A5
(en)
1975-04-30
NL169668B
(en)
1982-03-01
FR2198204A1
(en)
1974-03-29
JPS579147B2
(en)
1982-02-19
NO142057B
(en)
1980-03-10
AU5975073A
(en)
1975-03-06
ATA756273A
(en)
1977-01-15
IT990421B
(en)
1975-06-20
JPS4966104A
(en)
1974-06-26
NL7211997A
(en)
1974-03-05
DE2341340A1
(en)
1974-03-14
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Legal Events
Date
Code
Title
Description
1976-11-17
PS
Patent sealed
1992-04-29
PCNP
Patent ceased through non-payment of renewal fee
