[go: up one dir, main page]

JPS56138376A - Video signal transmission system - Google Patents

Video signal transmission system

Info

Publication number
JPS56138376A
JPS56138376A JP4184680A JP4184680A JPS56138376A JP S56138376 A JPS56138376 A JP S56138376A JP 4184680 A JP4184680 A JP 4184680A JP 4184680 A JP4184680 A JP 4184680A JP S56138376 A JPS56138376 A JP S56138376A
Authority
JP
Japan
Prior art keywords
video signal
twice
frequency
frame
signal
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
JP4184680A
Other languages
Japanese (ja)
Inventor
Takashi Fujio
Daiji Nishizawa
Junji Kumada
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 JP4184680A priority Critical patent/JPS56138376A/en
Publication of JPS56138376A publication Critical patent/JPS56138376A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H04N7/122—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal involving expansion and subsequent compression of a signal segment, e.g. a frame, a line

Landscapes

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

Abstract

PURPOSE:To transmit the video signal with high resolution on the transmission line with narrow band, by transmitting the video signal formed with n-times line scanning speed after expanding the time axis n times. CONSTITUTION:The line scanning speed of three primary color pickup systems 11, 12, 13 is twice as large as the conventional speed, and the field frequency in conventional pickup systems corresponds to the frame frequency, and the frame frequency is twice as large as the conventional frequency. Thus, the frequency band of the pickup output video signal is twice as large, and the band width of the preamplifiers 14, 15, 16 is twice as large. The input video signal fed to the scanning converters 18, 19, 20 is the three primary color signal having 60Hz of frame frequency and 525 of scanning lines, and as to the 1st frame of the input video signal, only the video signal of the odd number line of signal waveform is picked up as the output video signal by expanding the time axis of the video signal twice, and as to the 2nd frame of the input video signal, only the even number line of signal waveform can be picked up similarly.
JP4184680A 1980-03-31 1980-03-31 Video signal transmission system Pending JPS56138376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4184680A JPS56138376A (en) 1980-03-31 1980-03-31 Video signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4184680A JPS56138376A (en) 1980-03-31 1980-03-31 Video signal transmission system

Publications (1)

Publication Number Publication Date
JPS56138376A true JPS56138376A (en) 1981-10-28

Family

ID=12619612

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4184680A Pending JPS56138376A (en) 1980-03-31 1980-03-31 Video signal transmission system

Country Status (1)

Country Link
JP (1) JPS56138376A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879390A (en) * 1981-11-05 1983-05-13 Sony Corp Television transmission and reception system
JPS5966283A (en) * 1982-09-13 1984-04-14 インテレツセンゲマインシヤフト・フユア・ルントフンクシユツツレヒテ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング・シユツツレヒツフエルヴエルツング・ウント・コンパニー・コマンデイートゲゼルシヤフト Television transmission system
JPS59226586A (en) * 1983-06-08 1984-12-19 Hitachi Ltd High definition television equipment
JPS6346882A (en) * 1986-08-14 1988-02-27 Clarion Co Ltd Quasi-high definition image pickup method
JPS63209285A (en) * 1987-02-25 1988-08-30 Clarion Co Ltd High resolution signal processor
JPH0292184A (en) * 1988-09-29 1990-03-30 Pioneer Electron Corp Muse-ntsc converting system
EP0515155A2 (en) * 1991-05-21 1992-11-25 Sony Corporation Scanning rate conversion

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52127116A (en) * 1976-04-19 1977-10-25 Hitachi Denshi Ltd Transmitting system of static picture
JPS5454516A (en) * 1977-10-11 1979-04-28 Nippon Telegr & Teleph Corp <Ntt> Signal delivery system for moving picture of narrow band

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52127116A (en) * 1976-04-19 1977-10-25 Hitachi Denshi Ltd Transmitting system of static picture
JPS5454516A (en) * 1977-10-11 1979-04-28 Nippon Telegr & Teleph Corp <Ntt> Signal delivery system for moving picture of narrow band

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879390A (en) * 1981-11-05 1983-05-13 Sony Corp Television transmission and reception system
JPS5966283A (en) * 1982-09-13 1984-04-14 インテレツセンゲマインシヤフト・フユア・ルントフンクシユツツレヒテ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング・シユツツレヒツフエルヴエルツング・ウント・コンパニー・コマンデイートゲゼルシヤフト Television transmission system
JPH0423874B2 (en) * 1982-09-13 1992-04-23 Interetsusengemainshafuto Fuyua Runtofunkushutsutsurehite Gmbh Shutsutsurehitsufueruerutsungu Unto Co Kg
JPS59226586A (en) * 1983-06-08 1984-12-19 Hitachi Ltd High definition television equipment
JPS6346882A (en) * 1986-08-14 1988-02-27 Clarion Co Ltd Quasi-high definition image pickup method
JPS63209285A (en) * 1987-02-25 1988-08-30 Clarion Co Ltd High resolution signal processor
JPH0292184A (en) * 1988-09-29 1990-03-30 Pioneer Electron Corp Muse-ntsc converting system
EP0515155A2 (en) * 1991-05-21 1992-11-25 Sony Corporation Scanning rate conversion
US5315327A (en) * 1991-05-21 1994-05-24 Sony Corporation High scanning rate to standard scanning rate television signal converter with smooth moving edge conversion

Similar Documents

Publication Publication Date Title
EP0823818A3 (en) Image transmission apparatus
JPS56138376A (en) Video signal transmission system
AU4498772A (en) Line-sequential colour television transmission system and signal generator and signal receiver for said system
GB1391434A (en) Television standards conversion
JPS5258417A (en) Signal transmission system for color television
GB1043231A (en) Improved wired broadcasting systems and apparatus therefor
JPS53141007A (en) Video signal transmitter
GB1043232A (en) Improved wired broadcasting systems and apparatus therefor
JPS53113418A (en) Communication system for still picture
JPS54138342A (en) One line transmission system of rgb color video signal in rgb color character display unit
JPS5233422A (en) Color video signal transmitting system
SU628639A1 (en) Method of simultaneous transmitting and receiving of two tv programs
JPS5370711A (en) Picture image transmitting system
JPS5242313A (en) Frequency convertor
JPS5235933A (en) Sampling system of composite color television signal
JPS5440514A (en) Color television system
JPS5398727A (en) Interpolation reproducing system for video signal
JPS5258309A (en) Band compression system for facsimile
JPS5679592A (en) Transmission method of color video signal
JPS52115108A (en) Trinary signal transmission device
JPS5215215A (en) Signal transmission system for two-wire system
JPS52153321A (en) Tv signal transmission system
JPS5593344A (en) Information transmission system
JPS5277627A (en) Composite signal transmission system
JPS5591226A (en) Signal processor