JPS57181267A - Signal processing circuit - Google Patents

Signal processing circuit

Info

Publication number
JPS57181267A
JPS57181267A JP56067422A JP6742281A JPS57181267A JP S57181267 A JPS57181267 A JP S57181267A JP 56067422 A JP56067422 A JP 56067422A JP 6742281 A JP6742281 A JP 6742281A JP S57181267 A JPS57181267 A JP S57181267A
Authority
JP
Japan
Prior art keywords
output
binary
logical
contents
coding 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.)
Pending
Application number
JP56067422A
Other languages
Japanese (ja)
Inventor
Yuichiro 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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56067422A priority Critical patent/JPS57181267A/en
Publication of JPS57181267A publication Critical patent/JPS57181267A/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
    • H04N1/40—Picture signal circuits

Landscapes

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

Abstract

PURPOSE:To convert the output of a photosensor into a binary signal adequately and precisely by selecting respective outputs of binary-coding circuits which differ in slicing level on the basis of the logical output of a storage element provided at the output of one of the binary-coding circuits. CONSTITUTION:The outputs of a photosensor 21 is converted into binary signals by binary coding circuits 11-13 which have slicing levels V0/4, V0/2, and 3V0/4 respectively. At the output of the binary coding circuit 12, a shift register 17 operating as a storage element is provided and the contents (a)-(e) of the shift register 17 are applied to logical elements 24 and 25. In normal operation, only switches S2 and S3 are turned on and the output of the binary coding circuit 12 is led out to an output terminal 36. When, however, the contents (a)-(e) are all 1, the logical element 24 generates an output to turn on a switch S4, and the output of the binary coding circuit 13 is led out to the output terminal 36. When the contents (a)-(e) are all 0, the logical element 25 generates an output to turn on a switch S1, and the output of the binary coding circuit 11 is led out to the output terminal 36.
JP56067422A 1981-04-30 1981-04-30 Signal processing circuit Pending JPS57181267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56067422A JPS57181267A (en) 1981-04-30 1981-04-30 Signal processing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56067422A JPS57181267A (en) 1981-04-30 1981-04-30 Signal processing circuit

Publications (1)

Publication Number Publication Date
JPS57181267A true JPS57181267A (en) 1982-11-08

Family

ID=13344451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56067422A Pending JPS57181267A (en) 1981-04-30 1981-04-30 Signal processing circuit

Country Status (1)

Country Link
JP (1) JPS57181267A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58117773A (en) * 1982-01-06 1983-07-13 Nippon Kogaku Kk <Nikon> Binarizing device for picture signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58117773A (en) * 1982-01-06 1983-07-13 Nippon Kogaku Kk <Nikon> Binarizing device for picture signal
JPH0516225B2 (en) * 1982-01-06 1993-03-03 Nippon Kogaku Kk

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