JPS56122280A - Digital transmission device of video signal - Google Patents

Digital transmission device of video signal

Info

Publication number
JPS56122280A
JPS56122280A JP2555280A JP2555280A JPS56122280A JP S56122280 A JPS56122280 A JP S56122280A JP 2555280 A JP2555280 A JP 2555280A JP 2555280 A JP2555280 A JP 2555280A JP S56122280 A JPS56122280 A JP S56122280A
Authority
JP
Japan
Prior art keywords
signal
supplied
digital signal
encoder
prescribed
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.)
Pending
Application number
JP2555280A
Other languages
Japanese (ja)
Inventor
Norihisa Shirota
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP2555280A priority Critical patent/JPS56122280A/en
Publication of JPS56122280A publication Critical patent/JPS56122280A/en
Pending 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
    • H04N5/926—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation
    • H04N5/9261—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation involving data reduction
    • H04N5/9262—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation involving data reduction using predictive coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To reduce the number of the whole of samples and record and reproduce all samples, by converting the video signal to a digital signal and by operating the difference between two samples having correlativity and by performing block coding of this difference to transmit data. CONSTITUTION:The digital signal from recording processor 17 is supplied to preencoder 48, and one sub-block SB is defined as one unit by encoder 48, and subtraction is performed for this data, and all data are arranged and are coded to prescribed-bit codes. The digital signal of the prescribed-bit code is supplied to the encoder and is converted from the parallel signal to a serial signal and is taken out, and this serial signal is supplied to track 3 through amplifier 19 and is recorded. The reproduced digital signal from head 1 is supplied to reproducing decoder 32 through reproducing amplifier 31, and the serial signal is converted to a parallel signal, and the prescribed-bit code signal is decoded, and the signal processing opposite to encoder 48 is performed by post-decoder 42 to obtain a parallel digital signal.
JP2555280A 1980-02-29 1980-02-29 Digital transmission device of video signal Pending JPS56122280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2555280A JPS56122280A (en) 1980-02-29 1980-02-29 Digital transmission device of video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2555280A JPS56122280A (en) 1980-02-29 1980-02-29 Digital transmission device of video signal

Publications (1)

Publication Number Publication Date
JPS56122280A true JPS56122280A (en) 1981-09-25

Family

ID=12169115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2555280A Pending JPS56122280A (en) 1980-02-29 1980-02-29 Digital transmission device of video signal

Country Status (1)

Country Link
JP (1) JPS56122280A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60147972A (en) * 1984-01-11 1985-08-05 Hitachi Ltd Method of data recording
JPS62239405A (en) * 1986-04-11 1987-10-20 Sony Corp Digital signal recording method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60147972A (en) * 1984-01-11 1985-08-05 Hitachi Ltd Method of data recording
JPS62239405A (en) * 1986-04-11 1987-10-20 Sony Corp Digital signal recording method

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