JPS57211668A - Serial signal correcting system - Google Patents

Serial signal correcting system

Info

Publication number
JPS57211668A
JPS57211668A JP9715181A JP9715181A JPS57211668A JP S57211668 A JPS57211668 A JP S57211668A JP 9715181 A JP9715181 A JP 9715181A JP 9715181 A JP9715181 A JP 9715181A JP S57211668 A JPS57211668 A JP S57211668A
Authority
JP
Japan
Prior art keywords
signal
distortion
outputted
receiving
detects
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
JP9715181A
Other languages
Japanese (ja)
Other versions
JPS6363949B2 (en
Inventor
Eiichi Hoshino
Ichiro Shinoda
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 JP9715181A priority Critical patent/JPS57211668A/en
Publication of JPS57211668A publication Critical patent/JPS57211668A/en
Publication of JPS6363949B2 publication Critical patent/JPS6363949B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/01—Details
    • G06K7/016—Synchronisation of sensing process
    • G06K7/0166—Synchronisation of sensing process by means of clock-signals derived from the code marks, e.g. self-clocking code

Landscapes

  • Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)

Abstract

PURPOSE:To enhance the recognition rate of receiving signals to read the bar code accurately, by detecting the quantity of distortion when a distortion exists in a receiving signal and correcting the receiving signal on a basis of this quantity of distortion. CONSTITUTION:An edge detecting circuit 1 detects the first rise of an input signal and detects next the fall, and the signal width is counted by a counting circuit 2, and the length of the signal is set to the first buffer 3. Then, lengths (a) and (b) and widths (c) and (d) of the black label signal and the white label signal are outputted successibely and are stored in buffers 8, 7, 6, and 3 respectively and are subjected to addition in an adding part 10 and substraction in a substracting part 11 through a correction quantity generating circuit 9, and a signal with the distortion quantity corrected is outputted from a selecting part 12.
JP9715181A 1981-06-23 1981-06-23 Serial signal correcting system Granted JPS57211668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9715181A JPS57211668A (en) 1981-06-23 1981-06-23 Serial signal correcting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9715181A JPS57211668A (en) 1981-06-23 1981-06-23 Serial signal correcting system

Publications (2)

Publication Number Publication Date
JPS57211668A true JPS57211668A (en) 1982-12-25
JPS6363949B2 JPS6363949B2 (en) 1988-12-09

Family

ID=14184564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9715181A Granted JPS57211668A (en) 1981-06-23 1981-06-23 Serial signal correcting system

Country Status (1)

Country Link
JP (1) JPS57211668A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201177A (en) * 1982-05-20 1983-11-22 Matsushita Electric Ind Co Ltd Bar width recognizing method
JPS6310291A (en) * 1986-07-01 1988-01-16 Canon Inc Reading method for serial code

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520585A (en) * 1978-07-31 1980-02-14 Sharp Corp Demodulating system for bar-code signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520585A (en) * 1978-07-31 1980-02-14 Sharp Corp Demodulating system for bar-code signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201177A (en) * 1982-05-20 1983-11-22 Matsushita Electric Ind Co Ltd Bar width recognizing method
JPS6310291A (en) * 1986-07-01 1988-01-16 Canon Inc Reading method for serial code

Also Published As

Publication number Publication date
JPS6363949B2 (en) 1988-12-09

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