DE3871632D1 - Schaltung zur unterdrueckung des rauschens von chrominanzsignalen in fernsehempfaengern. - Google Patents

Schaltung zur unterdrueckung des rauschens von chrominanzsignalen in fernsehempfaengern.

Info

Publication number
DE3871632D1
DE3871632D1 DE8888306778T DE3871632T DE3871632D1 DE 3871632 D1 DE3871632 D1 DE 3871632D1 DE 8888306778 T DE8888306778 T DE 8888306778T DE 3871632 T DE3871632 T DE 3871632T DE 3871632 D1 DE3871632 D1 DE 3871632D1
Authority
DE
Germany
Prior art keywords
suppressing
noise
circuit
television receivers
chrominance signals
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
DE8888306778T
Other languages
English (en)
Other versions
DE3871632T2 (de
Inventor
Masaaki C O Patent Divis Kisou
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Application granted granted Critical
Publication of DE3871632D1 publication Critical patent/DE3871632D1/de
Publication of DE3871632T2 publication Critical patent/DE3871632T2/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
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H04N9/78—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
DE8888306778T 1987-07-23 1988-07-22 Schaltung zur unterdrueckung des rauschens von chrominanzsignalen in fernsehempfaengern. Expired - Fee Related DE3871632T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62182204A JPS6427387A (en) 1987-07-23 1987-07-23 Noise reduction circuit for chrominance carrier signal

Publications (2)

Publication Number Publication Date
DE3871632D1 true DE3871632D1 (de) 1992-07-09
DE3871632T2 DE3871632T2 (de) 1993-01-28

Family

ID=16114175

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888306778T Expired - Fee Related DE3871632T2 (de) 1987-07-23 1988-07-22 Schaltung zur unterdrueckung des rauschens von chrominanzsignalen in fernsehempfaengern.

Country Status (5)

Country Link
US (1) US4928165A (de)
EP (1) EP0300822B1 (de)
JP (1) JPS6427387A (de)
KR (1) KR890003229A (de)
DE (1) DE3871632T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113439A (en) * 1989-09-28 1992-05-12 Pioneer Electronic Corporation Catv terminal and video apparatus having a noise eliminating circuit
US5241375A (en) * 1991-06-26 1993-08-31 Thomson Consumer Electronics, Inc. Chrominance noise reduction apparatus employing two-dimensional recursive filtering of multiplexed baseband color difference components
EP1526740A1 (de) * 2003-10-21 2005-04-27 Deutsche Thomson-Brandt Gmbh Verfahren und Vorrichtung zur rekursiven Verminderung des Chrominanzrauschens

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1515551A (en) * 1975-04-25 1978-06-28 British Broadcasting Corp Noise reduction in electrical signals
JPS54127623A (en) * 1978-03-27 1979-10-03 Nec Corp S/n improving device for television video signal
US4291333A (en) * 1979-05-22 1981-09-22 Fernseh Inc. Noise filter
US4333104A (en) * 1980-03-17 1982-06-01 Gte Laboratories Incorporated Color demodulating apparatus with cross-color cancellation
US4823184A (en) * 1984-04-09 1989-04-18 Corporate Communications Consultants, Inc. Color correction system and method with scene-change detection
US4670775A (en) * 1985-02-14 1987-06-02 Faroudja Laboratories, Inc. Inter-dimensional chrominance noise reduction system

Also Published As

Publication number Publication date
KR890003229A (ko) 1989-04-13
JPS6427387A (en) 1989-01-30
US4928165A (en) 1990-05-22
EP0300822A1 (de) 1989-01-25
DE3871632T2 (de) 1993-01-28
EP0300822B1 (de) 1992-06-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee