JPS5658383A - Line correlating circuit - Google Patents

Line correlating circuit

Info

Publication number
JPS5658383A
JPS5658383A JP13418079A JP13418079A JPS5658383A JP S5658383 A JPS5658383 A JP S5658383A JP 13418079 A JP13418079 A JP 13418079A JP 13418079 A JP13418079 A JP 13418079A JP S5658383 A JPS5658383 A JP S5658383A
Authority
JP
Japan
Prior art keywords
video signal
circuit
subtractor
cross talk
emphasis
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.)
Granted
Application number
JP13418079A
Other languages
Japanese (ja)
Other versions
JPS6252993B2 (en
Inventor
Noboru Kojima
Akira Shibata
Shigeru Ishikawa
Hitoshi Kawamura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13418079A priority Critical patent/JPS5658383A/en
Publication of JPS5658383A publication Critical patent/JPS5658383A/en
Publication of JPS6252993B2 publication Critical patent/JPS6252993B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE:To constitute a line correlating circuit in a low cost, by picking up only cross talk component from the line correlativity through the use of a subtractor so that the cross talk component only is rejected from the present video signal. CONSTITUTION:After high band components of the existing video signal demodulated at a demodulator 14 is rejected at an LPF15, the signal is input to a subtractor 10 via a de-emphasis circuit 16. A 1H delay video signal demodulated at a demodulator 19 is input to the subtractor 10 via an LPF20 and a de-emphasis circuit 21. The subtractor 10 subtracts the video signal before 1H from the existing video signal to pick up only the cross talk components. In this case, although the frequency characteristics of delayed video signal are deteriorated in comprison with those of the existing video signal, this can be improved by compensating the characteristics of the circuit 21 that the de-emphasis is subtracted by about 6 dB at high band of about 1.5MHz or more to the characteristics of the circuit 16.
JP13418079A 1979-10-19 1979-10-19 Line correlating circuit Granted JPS5658383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13418079A JPS5658383A (en) 1979-10-19 1979-10-19 Line correlating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13418079A JPS5658383A (en) 1979-10-19 1979-10-19 Line correlating circuit

Publications (2)

Publication Number Publication Date
JPS5658383A true JPS5658383A (en) 1981-05-21
JPS6252993B2 JPS6252993B2 (en) 1987-11-09

Family

ID=15122304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13418079A Granted JPS5658383A (en) 1979-10-19 1979-10-19 Line correlating circuit

Country Status (1)

Country Link
JP (1) JPS5658383A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58220570A (en) * 1982-06-17 1983-12-22 Victor Co Of Japan Ltd Noise reducing circuit of video signal
JPS5920420U (en) * 1982-07-30 1984-02-07 三洋電機株式会社 noise canceller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58220570A (en) * 1982-06-17 1983-12-22 Victor Co Of Japan Ltd Noise reducing circuit of video signal
JPS5920420U (en) * 1982-07-30 1984-02-07 三洋電機株式会社 noise canceller

Also Published As

Publication number Publication date
JPS6252993B2 (en) 1987-11-09

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