JPS57203386A - Coding device of color picture signal - Google Patents

Coding device of color picture signal

Info

Publication number
JPS57203386A
JPS57203386A JP56087998A JP8799881A JPS57203386A JP S57203386 A JPS57203386 A JP S57203386A JP 56087998 A JP56087998 A JP 56087998A JP 8799881 A JP8799881 A JP 8799881A JP S57203386 A JPS57203386 A JP S57203386A
Authority
JP
Japan
Prior art keywords
coded
signals
color
signal
color picture
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.)
Pending
Application number
JP56087998A
Other languages
Japanese (ja)
Inventor
Keiichi Kubota
Junichi Ishida
Daiji Nishizawa
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.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting 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 Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP56087998A priority Critical patent/JPS57203386A/en
Publication of JPS57203386A publication Critical patent/JPS57203386A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Systems (AREA)

Abstract

PURPOSE:To improve the characteristc of a coded color signal and to reproduce a high-quality color picture, by extracting a coded signal through a low pass digital filter. CONSTITUTION:The three primary color picture signals R, G and B given through a color camera 1 are fed to a matrix circuit 2 and converted into a luminance signal Y and two color difference signals R-Y and B-Y. These signals are applied to the low pass analog filters 3-5 respectively to be almost eliminated for the undesired high band component and then applied to the A/D converters 6-8 to be coded. These coded signals are converted into a coded luminance signal and two coded color difference signals resectively. These coded color picture component signals are applied to the low pass digital filters 9-11 to be limited to each prescribed signal band and then fed to a sampling circuit 12. Thus the first sample values are thinned properly with each prescribed sampling cycle. After this, the signals are supplied to a video switch 13 and transmitted to a transmission system within a station, etc. for example.
JP56087998A 1981-06-10 1981-06-10 Coding device of color picture signal Pending JPS57203386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56087998A JPS57203386A (en) 1981-06-10 1981-06-10 Coding device of color picture signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56087998A JPS57203386A (en) 1981-06-10 1981-06-10 Coding device of color picture signal

Publications (1)

Publication Number Publication Date
JPS57203386A true JPS57203386A (en) 1982-12-13

Family

ID=13930454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56087998A Pending JPS57203386A (en) 1981-06-10 1981-06-10 Coding device of color picture signal

Country Status (1)

Country Link
JP (1) JPS57203386A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01138884A (en) * 1987-11-10 1989-05-31 Ee D S:Kk Color still picture transmission system
US5041906A (en) * 1988-05-13 1991-08-20 Matsushita Electric Industrial Co., Ltd. Digital video signal processing method and apparatus therefor
US5166783A (en) * 1991-08-05 1992-11-24 Sony Corporation Of America Digital video color processor with anti-aliasing filter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619287A (en) * 1979-07-25 1981-02-23 Nec Corp Converting and adverse converting device for tdm color television signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619287A (en) * 1979-07-25 1981-02-23 Nec Corp Converting and adverse converting device for tdm color television signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01138884A (en) * 1987-11-10 1989-05-31 Ee D S:Kk Color still picture transmission system
US5041906A (en) * 1988-05-13 1991-08-20 Matsushita Electric Industrial Co., Ltd. Digital video signal processing method and apparatus therefor
US5166783A (en) * 1991-08-05 1992-11-24 Sony Corporation Of America Digital video color processor with anti-aliasing filter

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