DE68926230T2 - Rauschmessung für Videosignale - Google Patents

Rauschmessung für Videosignale

Info

Publication number
DE68926230T2
DE68926230T2 DE68926230T DE68926230T DE68926230T2 DE 68926230 T2 DE68926230 T2 DE 68926230T2 DE 68926230 T DE68926230 T DE 68926230T DE 68926230 T DE68926230 T DE 68926230T DE 68926230 T2 DE68926230 T2 DE 68926230T2
Authority
DE
Germany
Prior art keywords
video signals
noise measurement
noise
measurement
video
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 - Fee Related
Application number
DE68926230T
Other languages
English (en)
Other versions
DE68926230D1 (de
Inventor
Ted Alan Darby
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.)
Philips North America LLC
Original Assignee
Philips Electronics North America 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 Philips Electronics North America Corp filed Critical Philips Electronics North America Corp
Publication of DE68926230D1 publication Critical patent/DE68926230D1/de
Application granted granted Critical
Publication of DE68926230T2 publication Critical patent/DE68926230T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
DE68926230T 1988-12-20 1989-12-14 Rauschmessung für Videosignale Expired - Fee Related DE68926230T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/288,061 US4873574A (en) 1988-12-20 1988-12-20 Noise measurement for video signals

Publications (2)

Publication Number Publication Date
DE68926230D1 DE68926230D1 (de) 1996-05-15
DE68926230T2 true DE68926230T2 (de) 1996-10-10

Family

ID=23105575

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68926230T Expired - Fee Related DE68926230T2 (de) 1988-12-20 1989-12-14 Rauschmessung für Videosignale

Country Status (4)

Country Link
US (1) US4873574A (de)
EP (1) EP0378875B1 (de)
JP (1) JPH02223869A (de)
DE (1) DE68926230T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5025316A (en) * 1989-11-06 1991-06-18 North American Philips Corporation Video noise reduction system with measured noise input
US5086344A (en) * 1990-05-11 1992-02-04 Eastman Kodak Company Digital correlated double sampling circuit for sampling the output of an image sensor
KR930001678A (ko) * 1991-06-13 1993-01-16 강진구 영상 신호에 있어서의 잡음 검출 알고리즘
US5406329A (en) * 1992-01-08 1995-04-11 Ikegami Tsushinki Co., Ltd. Solid state image pickup apparatus having test signal generator
EP0562407B1 (de) * 1992-03-23 1998-09-16 THOMSON multimedia Verfahren und Gerät zur Rauschmessung
US5790523A (en) * 1993-09-17 1998-08-04 Scientific-Atlanta, Inc. Testing facility for a broadband communications system
DE69614832T2 (de) * 1996-05-24 2001-12-20 Matsushita Electric Ind Co Ltd Verfahren und Schaltung zur Bestimmung eines Rauschwerts der repräsentativ ist für das Rauschen in einem Signal
US5946033A (en) * 1996-05-28 1999-08-31 Gatan, Inc. Method and apparatus for multiple read-out speeds for a CTD
DE19743124B4 (de) * 1997-09-30 2004-08-26 Harman Becker Automotive Systems (Xsys Division) Gmbh Verfahren zur Bestimmung der Qualität eines Videosignals und/oder eines Fernsehbildes
DE10302003B4 (de) * 2002-02-26 2011-06-16 Thomson Licensing S.A. Verfahren und Schaltung zur Bestimmung des Rauschanteils in einem Videosignal
ES2381668T3 (es) 2002-10-07 2012-05-30 Koninklijke Philips Electronics N.V. Ajuste automático de un estado operativo de un amplificador de banda ancha
US7701512B1 (en) * 2003-05-20 2010-04-20 Pixelworks, Inc. System and method for improved horizontal and vertical sync pulse detection and processing
TW594662B (en) * 2003-06-03 2004-06-21 Chunghwa Picture Tubes Ltd Method for restraining noise when flat display turn on/off
CN101847382B (zh) * 2009-03-25 2012-06-27 华映视讯（吴江）有限公司 降低液晶显示器噪声的噪声抑制装置及相关液晶显示器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172263A (en) * 1978-03-09 1979-10-23 Home Box Office Inc. Methods and apparatus for measuring signal-to-noise ratio
US4500911A (en) * 1981-05-25 1985-02-19 Nippon Hoso Kyokai Noise reduction apparatus
US4535353A (en) * 1984-10-18 1985-08-13 Zenith Electronics Corporation Vertical reference signal identification system
JPS621379A (ja) * 1985-06-27 1987-01-07 Matsushita Electric Ind Co Ltd 映像信号処理装置
US4723166A (en) * 1986-04-11 1988-02-02 Harris Corporation Noise adjusted recursive filter
US4721997A (en) * 1986-06-02 1988-01-26 Sencore, Inc. Signal to noise ratio measurement by sampling noise outside carrier frequency
JPS6359273A (ja) * 1986-08-29 1988-03-15 Nec Home Electronics Ltd 雑音低減装置

Also Published As

Publication number Publication date
EP0378875B1 (de) 1996-04-10
DE68926230D1 (de) 1996-05-15
US4873574A (en) 1989-10-10
JPH02223869A (ja) 1990-09-06
EP0378875A3 (de) 1991-08-07
EP0378875A2 (de) 1990-07-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee