JPS5738080A - Ghost detector - Google Patents

Ghost detector

Info

Publication number
JPS5738080A
JPS5738080A JP11388680A JP11388680A JPS5738080A JP S5738080 A JPS5738080 A JP S5738080A JP 11388680 A JP11388680 A JP 11388680A JP 11388680 A JP11388680 A JP 11388680A JP S5738080 A JPS5738080 A JP S5738080A
Authority
JP
Japan
Prior art keywords
ghost
output
circuit
signal
synchronizing signal
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
JP11388680A
Other languages
Japanese (ja)
Inventor
Hidekazu Taira
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11388680A priority Critical patent/JPS5738080A/en
Publication of JPS5738080A publication Critical patent/JPS5738080A/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)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

PURPOSE:To detect ghost surely and stably, by picking up a video signal including ghost with a switch circuit and processing and rectifying the output with a differential or differentiating circuit. CONSTITUTION:Analog switches SW3, SW4 are complementarily switched at the period of a horizontal synchronizing signal with an output of a switch control circuit 10 to output a video signal including a ghost signal or a DC voltage corresponding to one level of the synchronizing signal of a television signal. After the output of the switch circuits SW3 and SW4 is processed at a differential or differentiation circuit 4, it is rectified at a full wave rectifying circuit 9. Thus, te ghost detection output is not effected by the leading and trailing differentiation pulse of the horizontal synchronizing signal, and stable ghost detection is made.
JP11388680A 1980-08-18 1980-08-18 Ghost detector Pending JPS5738080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11388680A JPS5738080A (en) 1980-08-18 1980-08-18 Ghost detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11388680A JPS5738080A (en) 1980-08-18 1980-08-18 Ghost detector

Publications (1)

Publication Number Publication Date
JPS5738080A true JPS5738080A (en) 1982-03-02

Family

ID=14623585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11388680A Pending JPS5738080A (en) 1980-08-18 1980-08-18 Ghost detector

Country Status (1)

Country Link
JP (1) JPS5738080A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60144921A (en) * 1984-01-07 1985-07-31 Fuji Elelctrochem Co Ltd Manufacture of small size transformer
JPS60144922A (en) * 1984-01-07 1985-07-31 Fuji Elelctrochem Co Ltd Manufacture of small size inductor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60144921A (en) * 1984-01-07 1985-07-31 Fuji Elelctrochem Co Ltd Manufacture of small size transformer
JPS60144922A (en) * 1984-01-07 1985-07-31 Fuji Elelctrochem Co Ltd Manufacture of small size inductor

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