JPS55143682A - Read system for bar code information - Google Patents

Read system for bar code information

Info

Publication number
JPS55143682A
JPS55143682A JP5061379A JP5061379A JPS55143682A JP S55143682 A JPS55143682 A JP S55143682A JP 5061379 A JP5061379 A JP 5061379A JP 5061379 A JP5061379 A JP 5061379A JP S55143682 A JPS55143682 A JP S55143682A
Authority
JP
Japan
Prior art keywords
signals
code information
delay
systems
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.)
Granted
Application number
JP5061379A
Other languages
Japanese (ja)
Other versions
JPS6131911B2 (en
Inventor
Shunji Kitagawa
Hiroyuki Ikeda
Katsumi Fujiwara
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 JP5061379A priority Critical patent/JPS55143682A/en
Publication of JPS55143682A publication Critical patent/JPS55143682A/en
Publication of JPS6131911B2 publication Critical patent/JPS6131911B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Character Input (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE: To obtain a digital signal corresponding to the bar width of desired code information by extracting positive and negative delay signals of two systems from the differential output of an analog signal corresponding to the code information and then by combining signals obtained by level-slicing the outputs of both the systems.
CONSTITUTION: Bar code information recorded on a recording medium is optically read. Then, the obtained signal is supplied via signal input terminal 1 to differentiating circuit 11, which differentiates an analog signal, corresponding to the bar code, and then supplies its output to delay circuit 12 and slicing circuits 15 and 16. A signal delayed by this delay circuit 12 is input to envelope circuits 13 and 14 to extract delay signals of two systems corresponding to the differential signals of positive and negative polarities. The delay signals of two systems are input to slicing circuits 15 and 16, which level-slice the differential signals from circuit 11 on the basis of the delay signals, and the level-sliced signals are combined by digital signal extracting circuit 17, thereby outputting to signal output terminal 2 a digital signal corresponding to the bar width of desired bar code information.
COPYRIGHT: (C)1980,JPO&Japio
JP5061379A 1979-04-24 1979-04-24 Read system for bar code information Granted JPS55143682A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5061379A JPS55143682A (en) 1979-04-24 1979-04-24 Read system for bar code information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5061379A JPS55143682A (en) 1979-04-24 1979-04-24 Read system for bar code information

Publications (2)

Publication Number Publication Date
JPS55143682A true JPS55143682A (en) 1980-11-10
JPS6131911B2 JPS6131911B2 (en) 1986-07-23

Family

ID=12863816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5061379A Granted JPS55143682A (en) 1979-04-24 1979-04-24 Read system for bar code information

Country Status (1)

Country Link
JP (1) JPS55143682A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60157676A (en) * 1984-01-27 1985-08-17 Usac Electronics Ind Co Ltd Device for detecting mark
JPS60157678A (en) * 1984-01-27 1985-08-17 Usac Electronics Ind Co Ltd Amplifying circuit of bar code reader
JPS6154571A (en) * 1984-08-24 1986-03-18 Nippon Electric Ind Co Ltd Bar code reader
JPS6159571A (en) * 1984-08-31 1986-03-27 Nippon Electric Ind Co Ltd Bar code reader
US7007847B2 (en) 2003-02-21 2006-03-07 Fujitsu Limited Bar-code reader and method of reading bar-code
US7021545B2 (en) 2003-02-21 2006-04-04 Fujitsu Limited Bar-code reader, method of reading a bar code and computer product

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565101A (en) * 1978-11-09 1980-05-16 Fujitsu Ltd Measuring system for width

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565101A (en) * 1978-11-09 1980-05-16 Fujitsu Ltd Measuring system for width

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60157676A (en) * 1984-01-27 1985-08-17 Usac Electronics Ind Co Ltd Device for detecting mark
JPS60157678A (en) * 1984-01-27 1985-08-17 Usac Electronics Ind Co Ltd Amplifying circuit of bar code reader
JPH0120792B2 (en) * 1984-01-27 1989-04-18 Pfu Ltd
JPS6154571A (en) * 1984-08-24 1986-03-18 Nippon Electric Ind Co Ltd Bar code reader
JPS6159571A (en) * 1984-08-31 1986-03-27 Nippon Electric Ind Co Ltd Bar code reader
US7007847B2 (en) 2003-02-21 2006-03-07 Fujitsu Limited Bar-code reader and method of reading bar-code
US7021545B2 (en) 2003-02-21 2006-04-04 Fujitsu Limited Bar-code reader, method of reading a bar code and computer product
US7083101B2 (en) 2003-02-21 2006-08-01 Fujitsu Limited Bar-code reader and method of reading bar-code

Also Published As

Publication number Publication date
JPS6131911B2 (en) 1986-07-23

Similar Documents

Publication Publication Date Title
JPS5412714A (en) Recorder-reproducer
JPS5348625A (en) Difference signal amplifier circuit
JPS55143682A (en) Read system for bar code information
JPS5762673A (en) Slow motion reproducer for discoid information recording medium
JPS5270802A (en) Aural signal recording and reproducing system
JPS55154415A (en) Incidental phenomenon recorder
JPS5647907A (en) Recording and reproducing device for digital signal
JPS5513506A (en) Information signal transmission system
JPS5492717A (en) Magnetic storage-reproducer
JPS5715585A (en) Sampling circuit for character multiplex broadcast signal
JPS5322310A (en) Picture read system
JPS5753369A (en) Ink jet printer
JPS5428107A (en) Drop-out detecting system
JPS54111319A (en) Phase synchronizing circuit
JPS5750047A (en) Analog input device
JPS5389613A (en) Processing circuit of video signal
JPS57125546A (en) Timing pickup circuit
JPS51134118A (en) Digital signal recording system
JPS52152714A (en) Magnetic recording and reproducing system
JPS5421222A (en) Synchronous separation circuit
JPS5334428A (en) Detecting circuit for video information
JPS5625239A (en) Signal recording system of optical disk
JPS54131910A (en) Servo signal system of magnetic recorder
JPS55113108A (en) Magnetic recording and reproducing circuit
JPS55139668A (en) Magnetic head positioning method