JPS5668059A - Facsimile signal receiving device - Google Patents

Facsimile signal receiving device

Info

Publication number
JPS5668059A
JPS5668059A JP14386079A JP14386079A JPS5668059A JP S5668059 A JPS5668059 A JP S5668059A JP 14386079 A JP14386079 A JP 14386079A JP 14386079 A JP14386079 A JP 14386079A JP S5668059 A JPS5668059 A JP S5668059A
Authority
JP
Japan
Prior art keywords
code
transmission
information density
detecting
control part
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
JP14386079A
Other languages
Japanese (ja)
Inventor
Katsuhiko Kuma
Michiaki Okano
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14386079A priority Critical patent/JPS5668059A/en
Publication of JPS5668059A publication Critical patent/JPS5668059A/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
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device

Landscapes

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

Abstract

PURPOSE:To improve the quality of receiving pictures, by detecting the information density of the code and the code error for this detection to decide the picture quality of receiving pictures and by reporting the decision result to the transmission side. CONSTITUTION:The signal from the transmission line is demodulated through mixer 1 by demodulator 2 and is sent to transmission control part 5 through swithch 4, and the operation mode of transmission and reception is determined in control part 5. After that, the synchronizing signal is transmitted by control part 5 to switch 4, code information density detecting part 6, code error detecting part 7, and decoding part 8 for every one block of the scanning line. The information density of the picture signal coded for every one block is decided by detecting part 6, and the error in code information for every one block is detected by detecting part 7, and the picture signal is decoded in decoding part 8 according to a prescribed system. The picture quality is decided by picture quality deciding part 10 by deciding whether continuous N-number or more blocks or a prescribed number of or more blocks where the code error detected and the information density is decided as thick are generated in the original or not, and the decision result is reported to the transmission side through control part 5.
JP14386079A 1979-11-08 1979-11-08 Facsimile signal receiving device Pending JPS5668059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14386079A JPS5668059A (en) 1979-11-08 1979-11-08 Facsimile signal receiving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14386079A JPS5668059A (en) 1979-11-08 1979-11-08 Facsimile signal receiving device

Publications (1)

Publication Number Publication Date
JPS5668059A true JPS5668059A (en) 1981-06-08

Family

ID=15348651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14386079A Pending JPS5668059A (en) 1979-11-08 1979-11-08 Facsimile signal receiving device

Country Status (1)

Country Link
JP (1) JPS5668059A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171362A (en) * 1983-03-18 1984-09-27 Nec Corp Facsimile receiving circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171362A (en) * 1983-03-18 1984-09-27 Nec Corp Facsimile receiving circuit
JPH0352709B2 (en) * 1983-03-18 1991-08-12 Nippon Electric Co

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