JPS54131828A - Pattern information reading system - Google Patents

Pattern information reading system

Info

Publication number
JPS54131828A
JPS54131828A JP3877878A JP3877878A JPS54131828A JP S54131828 A JPS54131828 A JP S54131828A JP 3877878 A JP3877878 A JP 3877878A JP 3877878 A JP3877878 A JP 3877878A JP S54131828 A JPS54131828 A JP S54131828A
Authority
JP
Japan
Prior art keywords
binary
pattern information
coded
reference level
output
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
JP3877878A
Other languages
Japanese (ja)
Other versions
JPS5935065B2 (en
Inventor
Shigeaki Yamaguchi
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP53038778A priority Critical patent/JPS5935065B2/en
Publication of JPS54131828A publication Critical patent/JPS54131828A/en
Publication of JPS5935065B2 publication Critical patent/JPS5935065B2/en
Expired legal-status Critical Current

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Abstract

PURPOSE: To increase both S/N and the resolution and thus to obtain the clear binary pattern information by selecting the optimum reference level in sequence based on the pattern information which is binary-coded already.
CONSTITUTION: The light of light source 301 hits pattern information 302 and reflected to form the image on photoelectric converter 304 through lens 303 and based on information 302. Then converter 304 delivers the analog voltage or current in accordance with the light delivered, and the output is compared with the output of reference level deciding circuit 306 through comparator 305 to be delivered in the form of the binary-coded value of "1" or "0" and then memorized (307). This memorized value is then supplied to circuit 306 with the next timing to select the output (reference level) of circuit 306. In other words, the adjacent result binary-coded is memorized in that case, and the reference level opposing to the analog output to be binary-coded next is selected based on the result of the adjacent bit.
COPYRIGHT: (C)1979,JPO&Japio
JP53038778A 1978-04-04 1978-04-04 How to read pattern information Expired JPS5935065B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53038778A JPS5935065B2 (en) 1978-04-04 1978-04-04 How to read pattern information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53038778A JPS5935065B2 (en) 1978-04-04 1978-04-04 How to read pattern information

Publications (2)

Publication Number Publication Date
JPS54131828A true JPS54131828A (en) 1979-10-13
JPS5935065B2 JPS5935065B2 (en) 1984-08-27

Family

ID=12534741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53038778A Expired JPS5935065B2 (en) 1978-04-04 1978-04-04 How to read pattern information

Country Status (1)

Country Link
JP (1) JPS5935065B2 (en)

Also Published As

Publication number Publication date
JPS5935065B2 (en) 1984-08-27

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