JPS56166674A - Television ghost eliminator - Google Patents

Television ghost eliminator

Info

Publication number
JPS56166674A
JPS56166674A JP7101680A JP7101680A JPS56166674A JP S56166674 A JPS56166674 A JP S56166674A JP 7101680 A JP7101680 A JP 7101680A JP 7101680 A JP7101680 A JP 7101680A JP S56166674 A JPS56166674 A JP S56166674A
Authority
JP
Japan
Prior art keywords
memory
signal
speed
low
stored
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
JP7101680A
Other languages
Japanese (ja)
Other versions
JPH0159789B2 (en
Inventor
Kazuo Ozeki
Junzo Murakami
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 JP7101680A priority Critical patent/JPS56166674A/en
Publication of JPS56166674A publication Critical patent/JPS56166674A/en
Publication of JPH0159789B2 publication Critical patent/JPH0159789B2/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

Landscapes

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

Abstract

PURPOSE:To simplify a device by temporarily storing the digital waveform of a character broadcast signal, etc., inserted in the vertical flyback time of a TV signal in a memory, by reading it at a low speed, eliminating a ghost in a video period by such as a low-speed automatic equalizer. CONSTITUTION:To a terminal 20, a TV signal after demodulation having an inserted character broadcast signal in a vertical flyback time is inputted and the one- line signal of the input containing a character broadcast is brought under timing control 21 to be stored in an analog memory 22 at a high speed. The signal in the memory 22 is read out at a low speed and inputted to an automatic equalizer 100 to eliminate a ghost; and it is converted A/D-converted at a low speed and stored in a memory 24 as contents Xm. The contents Xm are processed by a convolution arithmetic circuit 26 through a discriminator 27 and correlator 29 to correct a filter coefficient to be stored in a memory 25. As a result, distortion is minimized and an outputted from a terminal 30. The low-speed automatic equalizer like this is used to simplify the device.
JP7101680A 1980-05-28 1980-05-28 Television ghost eliminator Granted JPS56166674A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7101680A JPS56166674A (en) 1980-05-28 1980-05-28 Television ghost eliminator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7101680A JPS56166674A (en) 1980-05-28 1980-05-28 Television ghost eliminator

Publications (2)

Publication Number Publication Date
JPS56166674A true JPS56166674A (en) 1981-12-21
JPH0159789B2 JPH0159789B2 (en) 1989-12-19

Family

ID=13448287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7101680A Granted JPS56166674A (en) 1980-05-28 1980-05-28 Television ghost eliminator

Country Status (1)

Country Link
JP (1) JPS56166674A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194580A (en) * 1983-04-19 1984-11-05 Toshiba Corp Automatic waveform equalizer
EP0166555A2 (en) * 1984-06-15 1986-01-02 Matsushita Electric Industrial Co., Ltd. Digital data reproducing system
JPS6218174A (en) * 1985-07-16 1987-01-27 Matsushita Electric Ind Co Ltd Method for transmitting and receiving reference signal for ghost elimination

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5470727A (en) * 1977-11-16 1979-06-06 Toshiba Corp Television ghost signal erasing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5470727A (en) * 1977-11-16 1979-06-06 Toshiba Corp Television ghost signal erasing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194580A (en) * 1983-04-19 1984-11-05 Toshiba Corp Automatic waveform equalizer
JPH0523101B2 (en) * 1983-04-19 1993-03-31 Tokyo Shibaura Electric Co
EP0166555A2 (en) * 1984-06-15 1986-01-02 Matsushita Electric Industrial Co., Ltd. Digital data reproducing system
US4673979A (en) * 1984-06-15 1987-06-16 Matsushita Electric Industrial Co., Ltd. Digital data reproducing system
JPS6218174A (en) * 1985-07-16 1987-01-27 Matsushita Electric Ind Co Ltd Method for transmitting and receiving reference signal for ghost elimination

Also Published As

Publication number Publication date
JPH0159789B2 (en) 1989-12-19

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