JPS57211667A - Preventing system for erroneous read - Google Patents

Preventing system for erroneous read

Info

Publication number
JPS57211667A
JPS57211667A JP56097150A JP9715081A JPS57211667A JP S57211667 A JPS57211667 A JP S57211667A JP 56097150 A JP56097150 A JP 56097150A JP 9715081 A JP9715081 A JP 9715081A JP S57211667 A JPS57211667 A JP S57211667A
Authority
JP
Japan
Prior art keywords
circuit
code
read
signal
bar
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
JP56097150A
Other languages
Japanese (ja)
Other versions
JPS6229837B2 (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 JP56097150A priority Critical patent/JPS57211667A/en
Publication of JPS57211667A publication Critical patent/JPS57211667A/en
Publication of JPS6229837B2 publication Critical patent/JPS6229837B2/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)
  • Character Discrimination (AREA)

Abstract

PURPOSE:To reject the read when a label code for another goods is stuck, by detecting a bar-code signal inputted within a certain time and demodulating this signal and holding it after discriminating left and right parts and comparing all characters in left and right blocks with each other. CONSTITUTION:The read signal of a bar-code is transmitted to a counting circuit 1, and ''1'' and ''0'' are outputted for black bars and white bars respectively. A start signal is generated by a start signal detecting circuit 2 and is controlled in a controlling part 6, and the character demodulation is performed in a character demodulating circuit 3 in accordance with lengths of ''1'' and ''0'', and a center code is detected by an end signal detecting circuit 4. These outputs are processed in a left and right discriminating circuit 7 and are stored in a holding circuit 8. If a label for another goods is stuck and bar-code data of two labels are demodulated and held in the circuit 8, characters in left and right blocks are compared with each other in first and second comparing circuits 9 and 10. If a information is not coincident as the result, the read is rejected as an erroneous read.
JP56097150A 1981-06-23 1981-06-23 Preventing system for erroneous read Granted JPS57211667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56097150A JPS57211667A (en) 1981-06-23 1981-06-23 Preventing system for erroneous read

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56097150A JPS57211667A (en) 1981-06-23 1981-06-23 Preventing system for erroneous read

Publications (2)

Publication Number Publication Date
JPS57211667A true JPS57211667A (en) 1982-12-25
JPS6229837B2 JPS6229837B2 (en) 1987-06-29

Family

ID=14184536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56097150A Granted JPS57211667A (en) 1981-06-23 1981-06-23 Preventing system for erroneous read

Country Status (1)

Country Link
JP (1) JPS57211667A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02502679A (en) * 1987-01-30 1990-08-23 フェデラル　エクスプレス　コーポレーション Apparatus and method for encoding and decoding barcodes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5461420A (en) * 1977-10-25 1979-05-17 Fujitsu Ltd Data input system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5461420A (en) * 1977-10-25 1979-05-17 Fujitsu Ltd Data input system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02502679A (en) * 1987-01-30 1990-08-23 フェデラル　エクスプレス　コーポレーション Apparatus and method for encoding and decoding barcodes

Also Published As

Publication number Publication date
JPS6229837B2 (en) 1987-06-29

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