JPS5658332A - Counting circuit - Google Patents

Counting circuit

Info

Publication number
JPS5658332A
JPS5658332A JP13566279A JP13566279A JPS5658332A JP S5658332 A JPS5658332 A JP S5658332A JP 13566279 A JP13566279 A JP 13566279A JP 13566279 A JP13566279 A JP 13566279A JP S5658332 A JPS5658332 A JP S5658332A
Authority
JP
Japan
Prior art keywords
output
circuit
outputs
leading
trailing
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
JP13566279A
Other languages
Japanese (ja)
Inventor
Toshiaki Mizuta
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP13566279A priority Critical patent/JPS5658332A/en
Publication of JPS5658332A publication Critical patent/JPS5658332A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/28—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
    • H03M1/30—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE:To avoid the count mistake, by controlling FFs with the AND condition between leading and trailing pulses of one sensor output and the sensor output of another sensor, and detecting the difference between number of forward and reverse revolutions with the OR output of each AND condition output and the FF output, in counting the number of revolutions of a rotating body. CONSTITUTION:The revolution of a rotating body 1 is detected with the 1st and 2nd rotating sensors S1, S2, and the results are wave-shaped at the 1st and 2nd wave shape circuits 2, 3, respectively. Further, the output (b) of the 2nd wave shape circuit 3 is given to a leading pulse generating circuit 4 and a trailing pulse generating circuit 5 to respectively produce pulses at leading and trailing. Further, the logical product between the outputs (c), (d) of the pulse generating circuits 4, 5 and the output (a) of the 1st wave shaping circuit 2 is taken at the 1st and 2nd AND circuits 6, 7, and the outputs (e), (f) of them control an FF8. Further, the logical sum is taken for the outputs (e) and (f) at a circuit 9, and this output (h) and the output (g) of an FF9 count the difference between the number of forward and reverse revolutions of the rotating body 1.
JP13566279A 1979-10-19 1979-10-19 Counting circuit Pending JPS5658332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13566279A JPS5658332A (en) 1979-10-19 1979-10-19 Counting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13566279A JPS5658332A (en) 1979-10-19 1979-10-19 Counting circuit

Publications (1)

Publication Number Publication Date
JPS5658332A true JPS5658332A (en) 1981-05-21

Family

ID=15156999

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13566279A Pending JPS5658332A (en) 1979-10-19 1979-10-19 Counting circuit

Country Status (1)

Country Link
JP (1) JPS5658332A (en)

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