JPS55124369A - Automatic ghost eliminating device - Google Patents

Automatic ghost eliminating device

Info

Publication number
JPS55124369A
JPS55124369A JP3260679A JP3260679A JPS55124369A JP S55124369 A JPS55124369 A JP S55124369A JP 3260679 A JP3260679 A JP 3260679A JP 3260679 A JP3260679 A JP 3260679A JP S55124369 A JPS55124369 A JP S55124369A
Authority
JP
Japan
Prior art keywords
ghost
circuit
coefficient
signal
coefficient value
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
JP3260679A
Other languages
Japanese (ja)
Other versions
JPS6310633B2 (en
Inventor
Yoshiki Mizutani
Yoshiro Nakajima
Koichiro Kurahashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP3260679A priority Critical patent/JPS55124369A/en
Publication of JPS55124369A publication Critical patent/JPS55124369A/en
Publication of JPS6310633B2 publication Critical patent/JPS6310633B2/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
    • H04N5/14—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

Abstract

PURPOSE:To increase the time duration for the ghost elimination as well as increase the converging velocity of the ghost eliminating action, by utilizing the plural number of horizontal synchronous signals within the vertical flyback time for the ghost eliminating reference signal. CONSTITUTION:The eliminating device consists of compensation signal generator circuit 2, sample pulse generator circuit 4, sampling circuit 6 and others. When the sampling signal which is the output of circuit 6 is not generated, the coefficient value at No.n scanning line of the unit coefficient circuit within circuit 2 corresponding to the sampling point becomes equal to the coefficient value at the horizontal scanning line of No.n+1. Thus no correcting action is given. However, in case the horizontal synchronous ghost signal is generated, the coefficient varies to give correction to the coefficient value of the coefficient circuit at the No.m sampling point. Accordingly, the coefficient value of the ghost signal is set to 0 to be converged to such coefficient value as to become equal to the coefficient of the both scanning lines. The ghost component is eliminated out of the video signal when the coefficient value of the ghost signal becomes 0 at all sampling points. For the rest parts, the ghost is eliminated over the full field since no correction is given.
JP3260679A 1979-03-19 1979-03-19 Automatic ghost eliminating device Granted JPS55124369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3260679A JPS55124369A (en) 1979-03-19 1979-03-19 Automatic ghost eliminating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3260679A JPS55124369A (en) 1979-03-19 1979-03-19 Automatic ghost eliminating device

Publications (2)

Publication Number Publication Date
JPS55124369A true JPS55124369A (en) 1980-09-25
JPS6310633B2 JPS6310633B2 (en) 1988-03-08

Family

ID=12363509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3260679A Granted JPS55124369A (en) 1979-03-19 1979-03-19 Automatic ghost eliminating device

Country Status (1)

Country Link
JP (1) JPS55124369A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3223571C1 (en) * 1982-06-24 1983-12-22 Standard Elektrik Lorenz Ag, 7000 Stuttgart Electrophotographic recording material
US4708391A (en) * 1986-07-03 1987-11-24 Mazda Motor Corporation Rear body structure for motor vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50155120A (en) * 1974-06-03 1975-12-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50155120A (en) * 1974-06-03 1975-12-15

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3223571C1 (en) * 1982-06-24 1983-12-22 Standard Elektrik Lorenz Ag, 7000 Stuttgart Electrophotographic recording material
US4708391A (en) * 1986-07-03 1987-11-24 Mazda Motor Corporation Rear body structure for motor vehicle

Also Published As

Publication number Publication date
JPS6310633B2 (en) 1988-03-08

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