JPS5455321A - Television receiver - Google Patents

Television receiver

Info

Publication number
JPS5455321A
JPS5455321A JP12273777A JP12273777A JPS5455321A JP S5455321 A JPS5455321 A JP S5455321A JP 12273777 A JP12273777 A JP 12273777A JP 12273777 A JP12273777 A JP 12273777A JP S5455321 A JPS5455321 A JP S5455321A
Authority
JP
Japan
Prior art keywords
circuit
signal
ghost
component
horizontal
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
JP12273777A
Other languages
Japanese (ja)
Inventor
Masahiro Tada
Takeyo Nakagawa
Kimitake Utsunomiya
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 JP12273777A priority Critical patent/JPS5455321A/en
Publication of JPS5455321A publication Critical patent/JPS5455321A/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 remove the ghost component of a horizontal synchronizing signal from a video signal accurately by a simply-constituted circuit, by enabling a subtraction circuit to subtract a composite signal by the ghost signal component read out from a memory circuit at every horizontal period. CONSTITUTION:A composite video signal inputted to terminal 10 is separated 11 into a luminance signal and chromaticity signal; the luminance signal component is sent to subtraction circuit 12 and also supplied to vertical and horizontal separator circuit 13 and gate circuit 14. Then, a vertical synchronizing signal is extracted from circuit 13 and a ghost signal component within one H period is extracted through monostable multivibrators 15 and 17 and then transmitted to memory circuit 20, where it is stored. Next, the ghost signal component is read out from circuit 20 at every horizontal period and supplied to subtrction circuit 12, where it is subtracted from the composite signal, so that the ghost component of the horizontal synchronizing signal can be removed accurately from the video signal by a simplyconstituted circuit.
JP12273777A 1977-10-13 1977-10-13 Television receiver Pending JPS5455321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12273777A JPS5455321A (en) 1977-10-13 1977-10-13 Television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12273777A JPS5455321A (en) 1977-10-13 1977-10-13 Television receiver

Publications (1)

Publication Number Publication Date
JPS5455321A true JPS5455321A (en) 1979-05-02

Family

ID=14843335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12273777A Pending JPS5455321A (en) 1977-10-13 1977-10-13 Television receiver

Country Status (1)

Country Link
JP (1) JPS5455321A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463781A2 (en) * 1990-06-25 1992-01-02 AT&T Corp. Ghost cancellation technique for analog TV

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463781A2 (en) * 1990-06-25 1992-01-02 AT&T Corp. Ghost cancellation technique for analog TV

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