IT1178503B - Circuito di reintegro del livello del nero - Google Patents

Circuito di reintegro del livello del nero

Info

Publication number
IT1178503B
IT1178503B IT22373/84A IT2237384A IT1178503B IT 1178503 B IT1178503 B IT 1178503B IT 22373/84 A IT22373/84 A IT 22373/84A IT 2237384 A IT2237384 A IT 2237384A IT 1178503 B IT1178503 B IT 1178503B
Authority
IT
Italy
Prior art keywords
black level
reinforcement circuit
level reinforcement
circuit
black
Prior art date
Application number
IT22373/84A
Other languages
English (en)
Other versions
IT8422373A0 (it
Inventor
Hongu Masayuki
Tamura Takahiko
Tokuhara Masaharu
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
Publication of IT8422373A0 publication Critical patent/IT8422373A0/it
Application granted granted Critical
Publication of IT1178503B publication Critical patent/IT1178503B/it

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
    • H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
IT22373/84A 1983-08-22 1984-08-21 Circuito di reintegro del livello del nero IT1178503B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58152926A JPS6043972A (ja) 1983-08-22 1983-08-22 映像の黒レベル再生回路

Publications (2)

Publication Number Publication Date
IT8422373A0 IT8422373A0 (it) 1984-08-21
IT1178503B true IT1178503B (it) 1987-09-09

Family

ID=15551158

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22373/84A IT1178503B (it) 1983-08-22 1984-08-21 Circuito di reintegro del livello del nero

Country Status (11)

Country Link
US (1) US4631589A (it)
JP (1) JPS6043972A (it)
AT (1) AT386709B (it)
AU (1) AU568563B2 (it)
CA (1) CA1220851A (it)
DE (1) DE3430593A1 (it)
FR (1) FR2551288B1 (it)
GB (1) GB2145599B (it)
IT (1) IT1178503B (it)
MY (1) MY100653A (it)
NL (1) NL192762C (it)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61204320A (ja) * 1985-03-06 1986-09-10 Kawasaki Steel Corp 耐リジング性に優れる加工用アズロ−ルド薄鋼板の製造方法
GB8507652D0 (en) * 1985-03-25 1985-05-01 Irex Corp Hard copy recorders
JPH0797830B2 (ja) * 1986-04-08 1995-10-18 ソニー株式会社 ビデオカメラの黒レベル補正回路
JPS645569U (it) * 1987-06-26 1989-01-12
KR910006376B1 (ko) * 1988-08-06 1991-08-21 삼성전자 주식회사 비데오 카메라의 자동 콘트라스트 조절회로
JP2532932B2 (ja) * 1988-11-19 1996-09-11 三洋電機株式会社 直流再生回路
US4975773A (en) * 1989-03-31 1990-12-04 Zenith Electronics Corporation Dynamic range video black level expander
JPH0316539A (ja) * 1989-06-14 1991-01-24 Sanyo Electric Co Ltd 電動調理器
JP3257788B2 (ja) * 1990-05-01 2002-02-18 ソニー株式会社 画像表示装置
JP2599020B2 (ja) * 1990-07-19 1997-04-09 松下電器産業株式会社 黒レベル補正回路
US5334998A (en) * 1991-07-05 1994-08-02 Sun Microsystems, Inc. Method and apparatus for utilizing blanking on both zero setup and pedestal setup display monitors with a conventional computer system
JP3153918B2 (ja) * 1991-09-30 2001-04-09 ソニー株式会社 固体撮像装置および遮光検出装置
DE4239365A1 (de) * 1992-11-24 1994-05-26 Philips Patentverwaltung Schaltungsanordnung zum Verarbeiten eines Videosignals
KR0128520B1 (ko) * 1993-02-26 1998-04-04 김광호 동기신호 분배기를 이용한 키드 클램프회로
JP3291843B2 (ja) * 1993-07-05 2002-06-17 ソニー株式会社 映像信号の黒レベル再生装置
US5986719A (en) * 1996-05-28 1999-11-16 Analog Devices, Inc. Video signal clamping method and apparatus with negative peak detection
US6671001B2 (en) * 2001-02-26 2003-12-30 Mitac International Corp. Offset level detection method for auto color gain control of analog video signals

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970777A (en) * 1975-06-09 1976-07-20 Minnesota Mining And Manufacturing Company Apparatus for adjusting video pedestal and peak white level
DE2628662C3 (de) * 1976-06-25 1980-03-06 Robert Bosch Gmbh, 7000 Stuttgart System zur Korrektur der digitalen Wertigkeit von Signalen
JPS5553978A (en) * 1978-10-17 1980-04-19 Sony Corp Automatic luminance adjusting device for television picture receiver
JPS5628569A (en) * 1979-08-17 1981-03-20 Sony Corp Video signal processing circuit
JPS5675780A (en) * 1979-11-26 1981-06-23 Sony Corp Video signal processing circuit

Also Published As

Publication number Publication date
DE3430593A1 (de) 1985-03-07
FR2551288A1 (fr) 1985-03-01
JPS6043972A (ja) 1985-03-08
IT8422373A0 (it) 1984-08-21
NL192762C (nl) 1998-01-06
AU568563B2 (en) 1988-01-07
NL192762B (nl) 1997-09-01
JPH0560299B2 (it) 1993-09-02
DE3430593C2 (it) 1993-04-08
ATA269284A (de) 1988-02-15
GB2145599B (en) 1987-02-04
GB2145599A (en) 1985-03-27
FR2551288B1 (fr) 1989-01-20
NL8402571A (nl) 1985-03-18
GB8420657D0 (en) 1984-09-19
MY100653A (en) 1990-12-29
US4631589A (en) 1986-12-23
CA1220851A (en) 1987-04-21
AU3139484A (en) 1985-02-28
AT386709B (de) 1988-10-10

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970827