JPS57136864A - Carrier wave generation system of fascimile equipment - Google Patents

Carrier wave generation system of fascimile equipment

Info

Publication number
JPS57136864A
JPS57136864A JP2223781A JP2223781A JPS57136864A JP S57136864 A JPS57136864 A JP S57136864A JP 2223781 A JP2223781 A JP 2223781A JP 2223781 A JP2223781 A JP 2223781A JP S57136864 A JPS57136864 A JP S57136864A
Authority
JP
Japan
Prior art keywords
signal
carrier wave
phase
inputted
pulse 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
JP2223781A
Other languages
Japanese (ja)
Inventor
Toru Hokura
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer Co Ltd
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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP2223781A priority Critical patent/JPS57136864A/en
Publication of JPS57136864A publication Critical patent/JPS57136864A/en
Pending 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
    • H04N1/00095—Systems or arrangements for the transmission of the picture signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To put a carrier wave in phase in every main scan by counting the carrier wave, and using a counting circuit which is cleared at the rise of a phase signal outputted on every main scan, and forming the carrier wave with the output of the counting circuit. CONSTITUTION:A reference signal A is inputted to the clock terminal CK of a programmable counter 1 and also inputted to the clock terminal CK of a DFF2. A phase signal B is inputted to the input terminal DI of the DFF2 and the output Q' and a phase signal are ANDed by a gate 3 to obtain a pulse signal C at the rise of the phase signal B. The pulse signal C clears the counter 1. Every time the counter 1 counts the reference signal A by a prescribed number, it outputs a pulse signal D to an FF4. The FF4 inverts the output every time the pulse signal D is applied, and opens and closes an analog switch 5 to perform the amplitude modulation of a picture signal.
JP2223781A 1981-02-19 1981-02-19 Carrier wave generation system of fascimile equipment Pending JPS57136864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2223781A JPS57136864A (en) 1981-02-19 1981-02-19 Carrier wave generation system of fascimile equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2223781A JPS57136864A (en) 1981-02-19 1981-02-19 Carrier wave generation system of fascimile equipment

Publications (1)

Publication Number Publication Date
JPS57136864A true JPS57136864A (en) 1982-08-24

Family

ID=12077181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2223781A Pending JPS57136864A (en) 1981-02-19 1981-02-19 Carrier wave generation system of fascimile equipment

Country Status (1)

Country Link
JP (1) JPS57136864A (en)

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