HK16196A - Horizontal filter for a luminance signal and a chrominance signal - Google Patents

Horizontal filter for a luminance signal and a chrominance signal

Info

Publication number
HK16196A
HK16196A HK16196A HK16196A HK16196A HK 16196 A HK16196 A HK 16196A HK 16196 A HK16196 A HK 16196A HK 16196 A HK16196 A HK 16196A HK 16196 A HK16196 A HK 16196A
Authority
HK
Hong Kong
Prior art keywords
signal
picture
chrominance
luminance
horizontal filter
Prior art date
Application number
HK16196A
Inventor
Jean Claude Guillon
Laurent Perdrieau
Original Assignee
Thomson Brandt 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 Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of HK16196A publication Critical patent/HK16196A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

Horizontal filter for luminance and chrominance signal for generating a reduced picture. For reproducing a picture in a main picture, the picture to be reproduced is sampled and a correct compression ratio is generated by means of filtering. For this purpose, a fast multiplexer and a high sampling rate are required. For the horizontal compression of an incoming video signal, signal samples of the luminance and of the chrominance are undersampled and subjected to an averaging in a filter. The invention is applied in picture reproduction devices.
HK16196A 1987-09-30 1996-01-25 Horizontal filter for a luminance signal and a chrominance signal HK16196A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3733457 1987-09-30

Publications (1)

Publication Number Publication Date
HK16196A true HK16196A (en) 1996-02-02

Family

ID=6337542

Family Applications (1)

Application Number Title Priority Date Filing Date
HK16196A HK16196A (en) 1987-09-30 1996-01-25 Horizontal filter for a luminance signal and a chrominance signal

Country Status (6)

Country Link
EP (1) EP0309975B1 (en)
JP (1) JP2792867B2 (en)
AT (1) ATE88848T1 (en)
DE (1) DE3880606D1 (en)
ES (1) ES2040797T3 (en)
HK (1) HK16196A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656515A (en) * 1985-03-25 1987-04-07 Rca Corporation Horizontal compression of pixels in a reduced-size video image utilizing cooperating subsampling and display rates
DE3602531A1 (en) * 1985-12-21 1987-06-25 Blaupunkt Werke Gmbh System for reproducing a reduced-size television image
US4712130A (en) * 1986-08-29 1987-12-08 Rca Corporation Chrominance signal frequency converter as for a pix-in-pix television receiver

Also Published As

Publication number Publication date
EP0309975A2 (en) 1989-04-05
JPH01280987A (en) 1989-11-13
JP2792867B2 (en) 1998-09-03
EP0309975B1 (en) 1993-04-28
ES2040797T3 (en) 1993-11-01
ATE88848T1 (en) 1993-05-15
EP0309975A3 (en) 1989-12-13
DE3880606D1 (en) 1993-06-03

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)