JPS55166380A - Double-color facsimile transmitter - Google Patents

Double-color facsimile transmitter

Info

Publication number
JPS55166380A
JPS55166380A JP7483779A JP7483779A JPS55166380A JP S55166380 A JPS55166380 A JP S55166380A JP 7483779 A JP7483779 A JP 7483779A JP 7483779 A JP7483779 A JP 7483779A JP S55166380 A JPS55166380 A JP S55166380A
Authority
JP
Japan
Prior art keywords
signal
red
terminal
picture signal
circuit
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
JP7483779A
Other languages
Japanese (ja)
Other versions
JPS5843945B2 (en
Inventor
Akira Ito
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.)
Panasonic System Solutions Japan Co Ltd
Original Assignee
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 Graphic Communication Systems Inc filed Critical Matsushita Graphic Communication Systems Inc
Priority to JP54074837A priority Critical patent/JPS5843945B2/en
Publication of JPS55166380A publication Critical patent/JPS55166380A/en
Publication of JPS5843945B2 publication Critical patent/JPS5843945B2/en
Expired 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
    • H04N1/46—Colour picture communication systems
    • H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Color Image Communication Systems (AREA)

Abstract

PURPOSE:To obtain the double-color facsimile signal without installing the modulating circuit newly but by forming the ternary analog waveform through the waveform conversion for transmission. CONSTITUTION:The red one among the beams arrived at half mirror 4 is reflected to be led to photoelectric converter 5B to obtain picture signal b. The beams transmitted through mirror 4 are led to photoelectric converter 5A to obtain picture signal c of the generalized color excepting the red. Signals b and c are then supplied to adder circuit 6 as well as subtractor circuit 7 to obtain picture signal d covering over the entire region and red picture signal e at the outputs of circuits 6 and 7 respectively. Then one side of signal d appears at terminal 17 of analog switch 10 via inverting circuit 9 and the other side appears at terminal 18 respectively through amplifier 8A. Then signal d turns to the control signal of switch 10. Here the terminal is selected to form ternary analog signal g comprising the plus, zero and minus each. The bias is applied to signal g to produce signal h, and amplitude modulation of two phases 0 and pi is carried out by ring modulator 13 and via the carrier of pulse generator 12. Thus signal i is obtained to be delivered.
JP54074837A 1979-06-13 1979-06-13 Two-color facsimile transmitter Expired JPS5843945B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54074837A JPS5843945B2 (en) 1979-06-13 1979-06-13 Two-color facsimile transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54074837A JPS5843945B2 (en) 1979-06-13 1979-06-13 Two-color facsimile transmitter

Publications (2)

Publication Number Publication Date
JPS55166380A true JPS55166380A (en) 1980-12-25
JPS5843945B2 JPS5843945B2 (en) 1983-09-30

Family

ID=13558842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54074837A Expired JPS5843945B2 (en) 1979-06-13 1979-06-13 Two-color facsimile transmitter

Country Status (1)

Country Link
JP (1) JPS5843945B2 (en)

Also Published As

Publication number Publication date
JPS5843945B2 (en) 1983-09-30

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