FR2307419A1 - Processing circuit for video colour signals - comprises frequency selective network signal limiting network and adder stage - Google Patents

Processing circuit for video colour signals - comprises frequency selective network signal limiting network and adder stage

Info

Publication number
FR2307419A1
FR2307419A1 FR7610034A FR7610034A FR2307419A1 FR 2307419 A1 FR2307419 A1 FR 2307419A1 FR 7610034 A FR7610034 A FR 7610034A FR 7610034 A FR7610034 A FR 7610034A FR 2307419 A1 FR2307419 A1 FR 2307419A1
Authority
FR
France
Prior art keywords
signal
processing circuit
video
network
colour
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.)
Granted
Application number
FR7610034A
Other languages
French (fr)
Other versions
FR2307419B3 (en
Inventor
Wilhelm Rudolf
Bodo Heyl
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2307419A1 publication Critical patent/FR2307419A1/en
Application granted granted Critical
Publication of FR2307419B3 publication Critical patent/FR2307419B3/fr
Granted 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
    • H04N9/77—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)

Abstract

The processing circuit is used to reduce fractions of the colour carrier frequency signal in the video colour signal. It comprises a frequency selective network (8), for separating the fractions of the colour carrier frequency signal from the video signal and a signal limiting network (10), supplied with the separated fractions of the colour carrier frequency signal. The output of the signal limiting network (10) is supplied to an adder stage (9), also receiving the video signal with the fractions of the colour carrier frequency signal removed from it, the output of the adder stage (9) supplied to the output (12) of the processing circuit. The frequency selective network (8) may comprise a subtraction stage receiving the video colour signal and the video colour signal with the colour carrier frequency removed from it via a filter (6).
FR7610034A 1975-04-08 1976-04-07 Processing circuit for video colour signals - comprises frequency selective network signal limiting network and adder stage Granted FR2307419A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752515300 DE2515300C2 (en) 1975-04-08 1975-04-08 Circuit arrangement for the reduction of color subcarrier-frequency signal components in a color video signal

Publications (2)

Publication Number Publication Date
FR2307419A1 true FR2307419A1 (en) 1976-11-05
FR2307419B3 FR2307419B3 (en) 1978-12-29

Family

ID=5943331

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7610034A Granted FR2307419A1 (en) 1975-04-08 1976-04-07 Processing circuit for video colour signals - comprises frequency selective network signal limiting network and adder stage

Country Status (4)

Country Link
BE (1) BE840525A (en)
DE (1) DE2515300C2 (en)
FR (1) FR2307419A1 (en)
HU (1) HU178470B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524532A1 (en) * 1985-07-10 1987-01-22 Bosch Gmbh Robert Method and circuit for reducing the chrominance cross-talk in a colour television encoder or luminance cross-talk in a colour television decoder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL261701A (en) * 1960-03-25
DE1908897B1 (en) * 1969-02-22 1970-07-02 Fernseh Gmbh Control circuit for eliminating picture errors in the color television picture

Also Published As

Publication number Publication date
DE2515300A1 (en) 1976-10-21
BE840525A (en) 1976-08-02
DE2515300C2 (en) 1985-01-17
FR2307419B3 (en) 1978-12-29
HU178470B (en) 1982-05-28

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
ST Notification of lapse
BR Restoration of rights