JPS5780858A - Picture signal processing system for micro-film reader - Google Patents

Picture signal processing system for micro-film reader

Info

Publication number
JPS5780858A
JPS5780858A JP55157459A JP15745980A JPS5780858A JP S5780858 A JPS5780858 A JP S5780858A JP 55157459 A JP55157459 A JP 55157459A JP 15745980 A JP15745980 A JP 15745980A JP S5780858 A JPS5780858 A JP S5780858A
Authority
JP
Japan
Prior art keywords
signal
picture signal
picture
fundamental
clock
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
JP55157459A
Other languages
Japanese (ja)
Other versions
JPS632188B2 (en
Inventor
Ichiro Ogawa
Giichi Yamazaki
Takayuki Mori
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.)
MATSUSHITA DENSOU KIKI KK
Panasonic System Solutions Japan Co Ltd
Original Assignee
MATSUSHITA DENSOU KIKI KK
Matsushita Graphic Communication Systems Inc
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 MATSUSHITA DENSOU KIKI KK, Matsushita Graphic Communication Systems Inc filed Critical MATSUSHITA DENSOU KIKI KK
Priority to JP55157459A priority Critical patent/JPS5780858A/en
Publication of JPS5780858A publication Critical patent/JPS5780858A/en
Publication of JPS632188B2 publication Critical patent/JPS632188B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To obtain a picture signal processing system for a micro-film reader where the band compression effect for picture signal transmission is improved, by setting always the picture signal in the region such as a border outside a frame to a white signal. CONSTITUTION:A fundamental clock (a) and a picture read enable signal (b) are inputted to the first block 5 to output a binary fundamental signal (c) (the black signal is high-level), an inversion picture signal (d) (the white signal is high-level) obtained by inverting the fundamental signal (c), a clock (f) synchronized with a picture signal enable signal (e) corresponding to a main scanning period, and a clock (g) synchronized with the fundamental picture signal (c) and the inversion picture signal (d). These signals (b)-(g) and a control signal (h) are inputted to the second block 6 to output a correction picture signal (i) and a scanning line counter output signal (j).
JP55157459A 1980-11-07 1980-11-07 Picture signal processing system for micro-film reader Granted JPS5780858A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55157459A JPS5780858A (en) 1980-11-07 1980-11-07 Picture signal processing system for micro-film reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55157459A JPS5780858A (en) 1980-11-07 1980-11-07 Picture signal processing system for micro-film reader

Publications (2)

Publication Number Publication Date
JPS5780858A true JPS5780858A (en) 1982-05-20
JPS632188B2 JPS632188B2 (en) 1988-01-18

Family

ID=15650117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55157459A Granted JPS5780858A (en) 1980-11-07 1980-11-07 Picture signal processing system for micro-film reader

Country Status (1)

Country Link
JP (1) JPS5780858A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59224970A (en) * 1983-06-03 1984-12-17 Nippon Kogaku Kk <Nikon> Phototelegraphy equipment
JPS6054569A (en) * 1983-09-05 1985-03-29 Canon Inc Color image recording device
JPS62130066A (en) * 1985-12-02 1987-06-12 Fuji Photo Film Co Ltd Picture signal processing method
JPH05284292A (en) * 1991-12-04 1993-10-29 Nikon Corp Picture scanner

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5189726A (en) * 1975-02-05 1976-08-06
JPS5219121A (en) * 1975-08-07 1977-02-14 Sumitomo Metal Ind Control device for drying * heating * and keeping warm of ladle
JPS5223688A (en) * 1975-08-18 1977-02-22 Oki Densen Kk Private distribution line structure and heat-proof protection method
JPS53134422A (en) * 1977-04-27 1978-11-24 Konishiroku Photo Ind Co Ltd Locating system for film frame
JPS5544281A (en) * 1978-09-25 1980-03-28 Nippon Telegr & Teleph Corp <Ntt> Facsimile unit
JPS5579563A (en) * 1978-12-13 1980-06-16 Toshiba Corp Unneeded-screen erasing transmission system of facsimile transmitter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5189726A (en) * 1975-02-05 1976-08-06
JPS5219121A (en) * 1975-08-07 1977-02-14 Sumitomo Metal Ind Control device for drying * heating * and keeping warm of ladle
JPS5223688A (en) * 1975-08-18 1977-02-22 Oki Densen Kk Private distribution line structure and heat-proof protection method
JPS53134422A (en) * 1977-04-27 1978-11-24 Konishiroku Photo Ind Co Ltd Locating system for film frame
JPS5544281A (en) * 1978-09-25 1980-03-28 Nippon Telegr & Teleph Corp <Ntt> Facsimile unit
JPS5579563A (en) * 1978-12-13 1980-06-16 Toshiba Corp Unneeded-screen erasing transmission system of facsimile transmitter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59224970A (en) * 1983-06-03 1984-12-17 Nippon Kogaku Kk <Nikon> Phototelegraphy equipment
JPS6054569A (en) * 1983-09-05 1985-03-29 Canon Inc Color image recording device
JPH0515106B2 (en) * 1983-09-05 1993-02-26 Canon Kk
JPS62130066A (en) * 1985-12-02 1987-06-12 Fuji Photo Film Co Ltd Picture signal processing method
JPH05284292A (en) * 1991-12-04 1993-10-29 Nikon Corp Picture scanner

Also Published As

Publication number Publication date
JPS632188B2 (en) 1988-01-18

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