JPS562068A - Optical reader - Google Patents

Optical reader

Info

Publication number
JPS562068A
JPS562068A JP7703779A JP7703779A JPS562068A JP S562068 A JPS562068 A JP S562068A JP 7703779 A JP7703779 A JP 7703779A JP 7703779 A JP7703779 A JP 7703779A JP S562068 A JPS562068 A JP S562068A
Authority
JP
Japan
Prior art keywords
input
photosignal
scanning window
direct reflection
photodetecting
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
JP7703779A
Other languages
Japanese (ja)
Other versions
JPS6112313B2 (en
Inventor
Kimio Yatsunami
Yoshihiko Iwamoto
Seiji Amazaki
Shigeo Terajima
Takaaki Okamoto
Shoichi Yasuda
Masahiro Horii
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP7703779A priority Critical patent/JPS562068A/en
Publication of JPS562068A publication Critical patent/JPS562068A/en
Publication of JPS6112313B2 publication Critical patent/JPS6112313B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Character Input (AREA)
  • Image Input (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To make it possible to read code information on a bar code label with accuracy under no influence of direct reflection at any time, by inhibiting a photosignal from being input from photodetecting means when direct reflection on the reverse of a scanning window is detected. CONSTITUTION:Photodetecting elements 91-9n, provided at the circumferential edge of scanning window 6, detect scattering reflected light from a bar code label appended to commodity 7. Directly-reflected light from the reverse surface of scanning window 6, once detected by element 91, is input as a photosignal to amplifier A1 via gate 101, but this amplifier A1 is saturated, which is reported to state detecting method 13 from the 1st input terminal. Then, method 13 outputs ''L'' from the 1st output terminal to inhibit gate 101 from operating, so that the photosignal from photodetecting element 91 via gate 101 will be inhibited from being input. Therefore, recognizing code information is carried out only by photosignals from elements 92-9n and accurate reading comes into effect under no influence of direct reflection at any time.
JP7703779A 1979-06-18 1979-06-18 Optical reader Granted JPS562068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7703779A JPS562068A (en) 1979-06-18 1979-06-18 Optical reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7703779A JPS562068A (en) 1979-06-18 1979-06-18 Optical reader

Publications (2)

Publication Number Publication Date
JPS562068A true JPS562068A (en) 1981-01-10
JPS6112313B2 JPS6112313B2 (en) 1986-04-07

Family

ID=13622557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7703779A Granted JPS562068A (en) 1979-06-18 1979-06-18 Optical reader

Country Status (1)

Country Link
JP (1) JPS562068A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6426903U (en) * 1987-08-10 1989-02-15

Also Published As

Publication number Publication date
JPS6112313B2 (en) 1986-04-07

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