JPS56122279A - Outline emphasizing circuit - Google Patents

Outline emphasizing circuit

Info

Publication number
JPS56122279A
JPS56122279A JP2554980A JP2554980A JPS56122279A JP S56122279 A JPS56122279 A JP S56122279A JP 2554980 A JP2554980 A JP 2554980A JP 2554980 A JP2554980 A JP 2554980A JP S56122279 A JPS56122279 A JP S56122279A
Authority
JP
Japan
Prior art keywords
signal
trs
bbda
video signal
outputs
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
JP2554980A
Other languages
Japanese (ja)
Inventor
Takahisa Tsuchiya
Mitsuo Soneda
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 JP2554980A priority Critical patent/JPS56122279A/en
Publication of JPS56122279A publication Critical patent/JPS56122279A/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
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction

Landscapes

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

Abstract

PURPOSE:To facilitate making the circuit into an IC, by adding output signals from two prescribed stages of the charge transfer element to which the video signal is supplied and b subtracting the signal from the middle stage between these two stages from the addition signal to obtain the outline signal of the video signal. CONSTITUTION:Capacitors Ca0''-Ca8'' connected to clocks phi1 and phi2 are connected to charge transfer element BBDa constituted with transistors TRs Qa1-Qa9, and the video signal from input terminal 1 is supplied to TRQa1 of the first stage of BBDa. Outputs of capacitors Ca0' and Ca8' of BBDa are applied to TRs 11 and 12 of current Miller circuit M1 and are added, and their outputs are applied to TRs 15 and 16 of differential amplifier D1. The signal of middle capacitor Ca4 of BBDa is connected to emitters of TRs 17 and 18 of current Miller circuit M2, and their outputs are applied to TRs 21 and 22 of differential amplifier D2, and this value is subtracted from the addition value. The signal level of current Miller circuit M3 is changed according to the voltage applied to terminals 23a and 23b, and the outline of the video signal is emphasized by BBDb.
JP2554980A 1980-02-29 1980-02-29 Outline emphasizing circuit Pending JPS56122279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2554980A JPS56122279A (en) 1980-02-29 1980-02-29 Outline emphasizing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2554980A JPS56122279A (en) 1980-02-29 1980-02-29 Outline emphasizing circuit

Publications (1)

Publication Number Publication Date
JPS56122279A true JPS56122279A (en) 1981-09-25

Family

ID=12169039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2554980A Pending JPS56122279A (en) 1980-02-29 1980-02-29 Outline emphasizing circuit

Country Status (1)

Country Link
JP (1) JPS56122279A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113522A (en) * 1974-07-24 1976-02-03 Nippon Electric Co
JPS51107031A (en) * 1975-03-17 1976-09-22 Matsushita Electric Ind Co Ltd
JPS5318911A (en) * 1976-08-05 1978-02-21 Hitachi Ltd Picture quality control unit for television receiver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113522A (en) * 1974-07-24 1976-02-03 Nippon Electric Co
JPS51107031A (en) * 1975-03-17 1976-09-22 Matsushita Electric Ind Co Ltd
JPS5318911A (en) * 1976-08-05 1978-02-21 Hitachi Ltd Picture quality control unit for television receiver

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