JPS5544619A - Information selection reading device - Google Patents

Information selection reading device

Info

Publication number
JPS5544619A
JPS5544619A JP11747978A JP11747978A JPS5544619A JP S5544619 A JPS5544619 A JP S5544619A JP 11747978 A JP11747978 A JP 11747978A JP 11747978 A JP11747978 A JP 11747978A JP S5544619 A JPS5544619 A JP S5544619A
Authority
JP
Japan
Prior art keywords
electron beam
detection mark
position detection
character
video signal
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.)
Pending
Application number
JP11747978A
Other languages
Japanese (ja)
Inventor
Isamu Shibata
Toshitatsu Suzuki
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP11747978A priority Critical patent/JPS5544619A/en
Publication of JPS5544619A publication Critical patent/JPS5544619A/en
Pending legal-status Critical Current

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  • Character Input (AREA)

Abstract

PURPOSE: To eliminate the effect of the shading, uneven exposure and others by giving the control to the quantization level of the video signal of the character reading device according to the brightness of the character position detection mark.
CONSTITUTION: First, the electron beam is positioned at periphery y1 of the designated row position detection mark, and the position detection mark is detected when the electron beam is shifted and passes through position y2 to then fix the y-direction position of the electron beam at position y2. Then, the electron beam is positioned at the periphery (x1y2) of the position detection mark. The position detection mark is detected when the electron beam is shifted and passes through the position (x2y2), and the potential proportional to the signal level is held. The electron beam scans the prescribed one character from the position (x2y2) to convert the character into the video signal. This video signal is then compared with the potential held in proportion to the bright of the position detection mark and then quantized.
COPYRIGHT: (C)1980,JPO&Japio
JP11747978A 1978-09-26 1978-09-26 Information selection reading device Pending JPS5544619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11747978A JPS5544619A (en) 1978-09-26 1978-09-26 Information selection reading device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11747978A JPS5544619A (en) 1978-09-26 1978-09-26 Information selection reading device

Publications (1)

Publication Number Publication Date
JPS5544619A true JPS5544619A (en) 1980-03-29

Family

ID=14712709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11747978A Pending JPS5544619A (en) 1978-09-26 1978-09-26 Information selection reading device

Country Status (1)

Country Link
JP (1) JPS5544619A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61106252U (en) * 1984-12-17 1986-07-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61106252U (en) * 1984-12-17 1986-07-05
JPS6323097Y2 (en) * 1984-12-17 1988-06-24

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