JPH021425B2 - - Google Patents

Info

Publication number
JPH021425B2
JPH021425B2 JP56017333A JP1733381A JPH021425B2 JP H021425 B2 JPH021425 B2 JP H021425B2 JP 56017333 A JP56017333 A JP 56017333A JP 1733381 A JP1733381 A JP 1733381A JP H021425 B2 JPH021425 B2 JP H021425B2
Authority
JP
Japan
Prior art keywords
clamp circuit
keying
video signal
clamp
pedestal
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.)
Expired - Lifetime
Application number
JP56017333A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57131175A (en
Inventor
Shunichi Yamamoto
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.)
NEC Corp
Original Assignee
Nippon 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP56017333A priority Critical patent/JPS57131175A/ja
Publication of JPS57131175A publication Critical patent/JPS57131175A/ja
Publication of JPH021425B2 publication Critical patent/JPH021425B2/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
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H04N5/185—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
JP56017333A 1981-02-06 1981-02-06 Video signal clamping circuit Granted JPS57131175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56017333A JPS57131175A (en) 1981-02-06 1981-02-06 Video signal clamping circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56017333A JPS57131175A (en) 1981-02-06 1981-02-06 Video signal clamping circuit

Publications (2)

Publication Number Publication Date
JPS57131175A JPS57131175A (en) 1982-08-13
JPH021425B2 true JPH021425B2 (fr) 1990-01-11

Family

ID=11941123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56017333A Granted JPS57131175A (en) 1981-02-06 1981-02-06 Video signal clamping circuit

Country Status (1)

Country Link
JP (1) JPS57131175A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60210070A (ja) * 1984-04-03 1985-10-22 Hitachi Ltd ビデオカメラ
JP2536484B2 (ja) * 1986-07-19 1996-09-18 ソニー株式会社 ゲインコントロ−ルアンプ
US5128764A (en) * 1989-10-27 1992-07-07 Siemens Aktiengesellschaft Level correcting circuit having switched stages of differing time constants
JPH07131677A (ja) * 1993-11-02 1995-05-19 Nec Corp ビデオ信号のサグ補正回路

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS579189A (en) * 1980-06-19 1982-01-18 Sanyo Electric Co Ltd Clamp circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS579189A (en) * 1980-06-19 1982-01-18 Sanyo Electric Co Ltd Clamp circuit

Also Published As

Publication number Publication date
JPS57131175A (en) 1982-08-13

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