JPS56147574A - Ghost elimination device - Google Patents

Ghost elimination device

Info

Publication number
JPS56147574A
JPS56147574A JP5125980A JP5125980A JPS56147574A JP S56147574 A JPS56147574 A JP S56147574A JP 5125980 A JP5125980 A JP 5125980A JP 5125980 A JP5125980 A JP 5125980A JP S56147574 A JPS56147574 A JP S56147574A
Authority
JP
Japan
Prior art keywords
data
ghost
maximum value
counters
memory section
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
JP5125980A
Other languages
Japanese (ja)
Inventor
Kenji Sato
Akira Kariyado
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
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5125980A priority Critical patent/JPS56147574A/en
Publication of JPS56147574A publication Critical patent/JPS56147574A/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)

Abstract

PURPOSE:To avoid production of an unnecessary ghost, by comparing the count value of two counters provided at the maximum value detection section and stopping the ghost detecting operation after the data for ghost erasing is obtained. CONSTITUTION:The data having maximum value of ghost removal is detected among the data of each memory section of the tap gain memory section A8 at the maximum value detection 11, and this data is subtracted from the data before inputting the signal obtained from the input to the 1 vertical period delay circuit 13 at the subtractor 12, the clock pulse is introduced to the 1st counter 17 with the positive output signal of the subtractor 12, and the clock pulse is introduced to the 2nd counter 18 with the negative output signal. The count value for both the counters 17, 18 is compared at the comparator 19 every synchronizing period. If the ratio is more than the specified ratio, the reset pulse for both the counters is output. If within a given ratio, the pulse to store the memory data of the tap gain memory section A8 is output.
JP5125980A 1980-04-18 1980-04-18 Ghost elimination device Pending JPS56147574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5125980A JPS56147574A (en) 1980-04-18 1980-04-18 Ghost elimination device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5125980A JPS56147574A (en) 1980-04-18 1980-04-18 Ghost elimination device

Publications (1)

Publication Number Publication Date
JPS56147574A true JPS56147574A (en) 1981-11-16

Family

ID=12881941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5125980A Pending JPS56147574A (en) 1980-04-18 1980-04-18 Ghost elimination device

Country Status (1)

Country Link
JP (1) JPS56147574A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147580A (en) * 1983-02-14 1984-08-23 Hitachi Ltd Ghost eliminating device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147580A (en) * 1983-02-14 1984-08-23 Hitachi Ltd Ghost eliminating device
JPH0516227B2 (en) * 1983-02-14 1993-03-03 Hitachi Ltd

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