JPS56119526A - Signal binary coding device - Google Patents

Signal binary coding device

Info

Publication number
JPS56119526A
JPS56119526A JP2155980A JP2155980A JPS56119526A JP S56119526 A JPS56119526 A JP S56119526A JP 2155980 A JP2155980 A JP 2155980A JP 2155980 A JP2155980 A JP 2155980A JP S56119526 A JPS56119526 A JP S56119526A
Authority
JP
Japan
Prior art keywords
signal
signals
sampling
blind sector
comparators
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
JP2155980A
Other languages
Japanese (ja)
Inventor
Keiichi Okamoto
Yasuhiko Hara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2155980A priority Critical patent/JPS56119526A/en
Publication of JPS56119526A publication Critical patent/JPS56119526A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
    • H03K5/082—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manipulation Of Pulses (AREA)
  • Picture Signal Circuits (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To follow a minute signal change without distortion of the signal, by sampling and holding the video signal in time series and by comparing the deviation between adjacent sampling signals with a prescribed blind sector reference value to decide it. CONSTITUTION:The video signal from image pickup tube 10 is sampled synchronously with clocks of clock generating circuit 20 by sample holding circuit 11 to obtain sampling signal 6. Singal 6 is delayed by delay circuit 12 and becomes one- clock delay signal 22. The differece components between signals 6 and signal 22 are obtained by differential amplifier 13, and amplifier 13 generates difference signal 23 and inputs it to comparators 14 and 15. Comparators 14 and 15 compare blind sector values delta and -delta from blind sector value setting equipments 16 and 17 with signal 23 to obtain binary UP signal 24 and DOWN signal 25. Singals 24 and 25 indicate rising and falling of the signal, respectively, and these signals are inputted to FF18 to binary signal 26.
JP2155980A 1980-02-25 1980-02-25 Signal binary coding device Pending JPS56119526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2155980A JPS56119526A (en) 1980-02-25 1980-02-25 Signal binary coding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2155980A JPS56119526A (en) 1980-02-25 1980-02-25 Signal binary coding device

Publications (1)

Publication Number Publication Date
JPS56119526A true JPS56119526A (en) 1981-09-19

Family

ID=12058361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2155980A Pending JPS56119526A (en) 1980-02-25 1980-02-25 Signal binary coding device

Country Status (1)

Country Link
JP (1) JPS56119526A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059868A (en) * 1983-09-12 1985-04-06 Canon Inc Binary-coding circuit
JPS63304767A (en) * 1987-06-05 1988-12-13 Mitsubishi Electric Corp Picture binarization device
JPH01191519A (en) * 1988-01-27 1989-08-01 Nissan Motor Co Ltd Picture processor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059868A (en) * 1983-09-12 1985-04-06 Canon Inc Binary-coding circuit
JPS63304767A (en) * 1987-06-05 1988-12-13 Mitsubishi Electric Corp Picture binarization device
JPH01191519A (en) * 1988-01-27 1989-08-01 Nissan Motor Co Ltd Picture processor

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