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GB1214328A - Improvements in or relating to recording - Google Patents

Improvements in or relating to recording

Info

Publication number
GB1214328A
GB1214328A GB5017367A GB5017367A GB1214328A GB 1214328 A GB1214328 A GB 1214328A GB 5017367 A GB5017367 A GB 5017367A GB 5017367 A GB5017367 A GB 5017367A GB 1214328 A GB1214328 A GB 1214328A
Authority
GB
United Kingdom
Prior art keywords
carrier
frequency
audio
signal
video signals
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
GB5017367A
Inventor
Marvin Camras
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.)
IIT Research Institute
Original Assignee
IIT Research Institute
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 IIT Research Institute filed Critical IIT Research Institute
Priority to GB5017367A priority Critical patent/GB1214328A/en
Publication of GB1214328A publication Critical patent/GB1214328A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/921—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by recording or reproducing the baseband signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/9201—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal
    • H04N5/9202—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a sound signal
    • H04N5/9204—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a sound signal using frequency division multiplex

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

1,214,328. Television signal recording; multiplex signalling; radio receiving circuits. IIT RESEARCH INSTITUTE. 3 Nov., 1967, No. 50173/67. Headings H3Q, H4F and H4L. In a magnetic recording system in which a recorded record medium is produced, the intermediate frequency audio carrier is separated from the video signals by means of a resonant circuit 15 and heterodyned 28 with a reference carrier signal to produce a lower frequency carrier which lies within the effective pass band of the magnetic recording system. This lower frequency audio modulated carrier is combined with the video signals and recorded on a single track of the magnetic tape. The recording audio carrier frequency is preferably an odd multiple of half line scanning frequency. The video signal may comprise a colour television signal, the frequency of the reference carrier signal being the chrominance subcarrier frequency. Upon playback the audio carrier is heterodyned with the reference carrier to produce the original I.F. audio carrier which may be applied directed to a television receiver together with the video signals. Reference has been directed by the Comptroller to Specification 1,148,231.
GB5017367A 1967-11-03 1967-11-03 Improvements in or relating to recording Expired GB1214328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5017367A GB1214328A (en) 1967-11-03 1967-11-03 Improvements in or relating to recording

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5017367A GB1214328A (en) 1967-11-03 1967-11-03 Improvements in or relating to recording

Publications (1)

Publication Number Publication Date
GB1214328A true GB1214328A (en) 1970-12-02

Family

ID=10454935

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5017367A Expired GB1214328A (en) 1967-11-03 1967-11-03 Improvements in or relating to recording

Country Status (1)

Country Link
GB (1) GB1214328A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066067A2 (en) * 1981-05-30 1982-12-08 TELEFUNKEN Fernseh und Rundfunk GmbH Video recorder by which multiple sound carriers and a picture carrier are recorded on a recording-track

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066067A2 (en) * 1981-05-30 1982-12-08 TELEFUNKEN Fernseh und Rundfunk GmbH Video recorder by which multiple sound carriers and a picture carrier are recorded on a recording-track
EP0066067A3 (en) * 1981-05-30 1984-08-08 Licentia Patent-Verwaltungs-Gmbh Video recorder by which multiple sound carriers and a picture carrier are recorded on a recording-track

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees