GB1522951A - Method of duplication of a video frequency signal recording - Google Patents

Method of duplication of a video frequency signal recording

Info

Publication number
GB1522951A
GB1522951A GB2972675A GB2972675A GB1522951A GB 1522951 A GB1522951 A GB 1522951A GB 2972675 A GB2972675 A GB 2972675A GB 2972675 A GB2972675 A GB 2972675A GB 1522951 A GB1522951 A GB 1522951A
Authority
GB
United Kingdom
Prior art keywords
frequency signal
video frequency
signal recording
carrier
july
Prior art date
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
GB2972675A
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.)
Thomson-Brandt SA
Original Assignee
Thomson-Brandt SA
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 Thomson-Brandt SA filed Critical Thomson-Brandt SA
Publication of GB1522951A publication Critical patent/GB1522951A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/20—Exposure; Apparatus therefor
    • G03F7/2037—Exposure with X-ray radiation or corpuscular radiation, through a mask with a pattern opaque to that radiation
    • G03F7/2039—X-ray radiation
    • 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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Abstract

1522951 Duplicating video recordings using photographic methods THOMSON-BRANDT 15 July 1975 [16 July 1974] 29726/75 Heading G2X A video frequency signal recording is duplicated by a) exposing a transparent carrier having a photo-sensitive layer to a laser beam modulated by the video frequency signal, the beam and carrier moving relatively to each other to produce a latent image in the form of a spiral track b) developing the resin to remove the exposed areas c) depositing a layer of material opaque to x-rays, e.g. carbon or an alloy of Mn and Bi, on the bared carrier and remaining resist d) removing the remaining resist and overlying material to leave a mask and e) exposing a sensitive resin covered disc to x-rays through the mask.
GB2972675A 1974-07-16 1975-07-15 Method of duplication of a video frequency signal recording Expired GB1522951A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7424669A FR2279193A1 (en) 1974-07-16 1974-07-16 PROCESS FOR MAKING VIDEO-FREQUENCY SIGNAL RECORDING DISCS, AND DISK THUS REALIZED

Publications (1)

Publication Number Publication Date
GB1522951A true GB1522951A (en) 1978-08-31

Family

ID=9141326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2972675A Expired GB1522951A (en) 1974-07-16 1975-07-15 Method of duplication of a video frequency signal recording

Country Status (4)

Country Link
JP (1) JPS5133920A (en)
FR (1) FR2279193A1 (en)
GB (1) GB1522951A (en)
IT (1) IT1039799B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5248990A (en) * 1987-04-16 1993-09-28 Canon Kabushiki Kaisha Process for producing optical recording medium for optical data recording and reproduction

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5954051A (en) * 1982-09-20 1984-03-28 Pioneer Electronic Corp Optical information recording carrier and its production
JPH0770092B2 (en) * 1984-09-28 1995-07-31 共同印刷株式会社 Optical reading card and manufacturing method thereof
JPH0648545B2 (en) * 1986-01-21 1994-06-22 共同印刷株式会社 Optical recording medium having pit pattern for pre-formatting and method of manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5248990A (en) * 1987-04-16 1993-09-28 Canon Kabushiki Kaisha Process for producing optical recording medium for optical data recording and reproduction

Also Published As

Publication number Publication date
FR2279193B1 (en) 1978-09-15
IT1039799B (en) 1979-12-10
JPS5133920A (en) 1976-03-23
DE2531562A1 (en) 1976-02-05
DE2531562B2 (en) 1977-04-07
FR2279193A1 (en) 1976-02-13

Similar Documents

Publication Publication Date Title
JPS53110503A (en) Tracking servo-unit for rotary recording medium reproducing device
SE8301767D0 (en) PROCEDURE FOR RECORDING A DIGITAL INFORMATION SIGNAL OF A RECORDING PROCESSOR WITH A RADIENT SENSITIVE INFORMATION LAYER, APPARATUS FOR IMPLEMENTATION OF THE PROCEDURE AND OPTICAL RECORDING PROCESSOR WITH AN SA
GB1362418A (en) Recording of a focussed image
GB1489775A (en) Method of producing a replicating matrix
ES413863A1 (en) Electron beam recording in thick materials
GB1522951A (en) Method of duplication of a video frequency signal recording
JPS5587953A (en) Processing method of x-ray image
US4135251A (en) Method for coded sequential non-coherent, redundant optical data-storage
GB1509495A (en) Record disc and method of producing the same
GB1447066A (en) Method and apparatus for making disc records
GB1372083A (en) Sound records and reproducing apparatus
JPS5230429A (en) Photographic image recording and processing system
GB1181144A (en) Apparatus for Recording and Reproducing Holograms
KR840003071A (en) Video Disc Forming Method
AU511687B2 (en) Method of making copies of information tracks on carriers
JPS5345204A (en) Tracking method for disk-type recording medium
JP2615833B2 (en) Optical disc master manufacturing method
JPS52110011A (en) Method of producing high density information recording carrier and photosensitive element used directly therefor
JPS5217717A (en) Disk recording reproduction apparatus
FR2278133A1 (en) DEVICE AND METHOD FOR REPRODUCING RECORDED INFORMATION
JP2615832B2 (en) Optical disc master manufacturing method
SU1432800A1 (en) Method of recording and reproducing information on electrophotographic receiving layer
JPS52141215A (en) Recording and reproducing method
JPS5372632A (en) Recording method
JPS55125543A (en) Optical recorder/reproducer

Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee