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JPS5669973A - Television ghost eliminator - Google Patents

Television ghost eliminator

Info

Publication number
JPS5669973A
JPS5669973A JP14537879A JP14537879A JPS5669973A JP S5669973 A JPS5669973 A JP S5669973A JP 14537879 A JP14537879 A JP 14537879A JP 14537879 A JP14537879 A JP 14537879A JP S5669973 A JPS5669973 A JP S5669973A
Authority
JP
Japan
Prior art keywords
output
transversal filter
gate
circuit
inputted
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
JP14537879A
Other languages
Japanese (ja)
Inventor
Masaru Sakurai
Shunichi Onishi
Masaharu Obara
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.)
Toshiba Corp
Japan Broadcasting Corp
Original Assignee
Toshiba Corp
Nippon Hoso Kyokai NHK
Tokyo Shibaura Electric Co Ltd
Japan Broadcasting 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 Toshiba Corp, Nippon Hoso Kyokai NHK, Tokyo Shibaura Electric Co Ltd, Japan Broadcasting Corp filed Critical Toshiba Corp
Priority to JP14537879A priority Critical patent/JPS5669973A/en
Publication of JPS5669973A publication Critical patent/JPS5669973A/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
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H04N5/211—Ghost signal cancellation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To prevent a picture from deteriorating in quality by outputting an input signal direct on detecting a ghost eliminator, using a transversal filter, getting unstable. CONSTITUTION:A television signal applied to terminal IN is inputted to transversal filter 1. By a weighting control voltage applied to weighting circuit 3, the gap gain is controlled according to a ghost component and at the output of transversal filter 1, a television signal having the ghost component eliminated appears. As the circuit like this gets unstable or divergent, the output of transversal filter 1 is compared with threshold levels VH and VL at level comparators 16 and 17, whose outputs are inputted to AND gate 18. The output of AND gate 18 is at a low level in this state. Then, this is held by latch circuit 19 and by the output of AND gate 20, switch circuit 21 is put into operation to send input signal IN to output OUT as it is, so that the deterioration of quality can be prevented.
JP14537879A 1979-11-12 1979-11-12 Television ghost eliminator Pending JPS5669973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14537879A JPS5669973A (en) 1979-11-12 1979-11-12 Television ghost eliminator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14537879A JPS5669973A (en) 1979-11-12 1979-11-12 Television ghost eliminator

Publications (1)

Publication Number Publication Date
JPS5669973A true JPS5669973A (en) 1981-06-11

Family

ID=15383843

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14537879A Pending JPS5669973A (en) 1979-11-12 1979-11-12 Television ghost eliminator

Country Status (1)

Country Link
JP (1) JPS5669973A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178083A (en) * 1983-03-29 1984-10-09 Toshiba Corp Receiver
US4583120A (en) * 1983-05-17 1986-04-15 Kabushiki Kaisha Toshiba Ghost canceller
JPH02111944U (en) * 1989-02-20 1990-09-07

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178083A (en) * 1983-03-29 1984-10-09 Toshiba Corp Receiver
US4583120A (en) * 1983-05-17 1986-04-15 Kabushiki Kaisha Toshiba Ghost canceller
JPH02111944U (en) * 1989-02-20 1990-09-07

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