JPS5726970A - Image sensor - Google Patents

Image sensor

Info

Publication number
JPS5726970A
JPS5726970A JP10172780A JP10172780A JPS5726970A JP S5726970 A JPS5726970 A JP S5726970A JP 10172780 A JP10172780 A JP 10172780A JP 10172780 A JP10172780 A JP 10172780A JP S5726970 A JPS5726970 A JP S5726970A
Authority
JP
Japan
Prior art keywords
circuit
base
aperture
trs
signal
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
JP10172780A
Other languages
Japanese (ja)
Inventor
Takashi Nakamura
Yoshio Chiba
Yoshimi Yasukochi
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 JP10172780A priority Critical patent/JPS5726970A/en
Publication of JPS5726970A publication Critical patent/JPS5726970A/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 save a mixer amplifier and to simplify an aperture correction circuit, by applying a luminance signal to a variable impedance circuit and an aperture compensation signal to a series circuit of variable and fixed impedance. CONSTITUTION:A luminance signal Y2 from an aperture compensation signal forming circuit 4 is applied to the base of a transistor (TR)Q11 constituting an aperture compensation circuit 6 without a mixer amplifier and the collector of the TRQ11 and the base of a TRQ12 are connected via a resistor R15. A series circuit of a TRQ13 and a resistor R16 is connected to the base of the TRQ12 and an aperture compensation signal is applied to the base of the TRQ13, then gamma compensation is made to the luminance signal Y2 with the TRs Q11, and TRs Q1-Q3 and resistors R1-R4, R11-R14 and suitable aperture compensation can be made with the Trs Q13 and the like.
JP10172780A 1980-07-24 1980-07-24 Image sensor Pending JPS5726970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10172780A JPS5726970A (en) 1980-07-24 1980-07-24 Image sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10172780A JPS5726970A (en) 1980-07-24 1980-07-24 Image sensor

Publications (1)

Publication Number Publication Date
JPS5726970A true JPS5726970A (en) 1982-02-13

Family

ID=14308311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10172780A Pending JPS5726970A (en) 1980-07-24 1980-07-24 Image sensor

Country Status (1)

Country Link
JP (1) JPS5726970A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5349389A (en) * 1993-04-14 1994-09-20 Rca Thomson Licensing Corporation Video attenuator with output combined with signal from non-linear shunt branch to provide gamma correction and high frequency detail enhancement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5349389A (en) * 1993-04-14 1994-09-20 Rca Thomson Licensing Corporation Video attenuator with output combined with signal from non-linear shunt branch to provide gamma correction and high frequency detail enhancement

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