JPS55164981A - Read-in unit - Google Patents

Read-in unit

Info

Publication number
JPS55164981A
JPS55164981A JP7063579A JP7063579A JPS55164981A JP S55164981 A JPS55164981 A JP S55164981A JP 7063579 A JP7063579 A JP 7063579A JP 7063579 A JP7063579 A JP 7063579A JP S55164981 A JPS55164981 A JP S55164981A
Authority
JP
Japan
Prior art keywords
circuit
level
fed
output
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
JP7063579A
Other languages
Japanese (ja)
Inventor
Hideaki Niwa
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.)
Kowa Co Ltd
Original Assignee
Kowa 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 Kowa Co Ltd filed Critical Kowa Co Ltd
Priority to JP7063579A priority Critical patent/JPS55164981A/en
Publication of JPS55164981A publication Critical patent/JPS55164981A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable to accurate read-in even if the level suddenly changes, by setting the reference value and pitch of the slice level through the reference of ground level detected.
CONSTITUTION: The video signal from the pick up unit 10 is fed to one input terminal of the comparison circuit 13 via the amplifier 12. On the other hand, the video output signal of the amplifier 12 is fed to the edge detection circuit 14 together with the line synchronizing signal of the driving circuit 11. The circuit 14 detects the background of the card to open the gate circuit 15 and lets the background pass through the rectifier circuit 16. The output of the circuit 16, that is, the level L0 showing the background part is fed to the multiplication type D/A converter 17, as the reference level. The output of the counter 18 producing the output having the number corresponding to the number of stages of desired slice level by receiving the control signal from the circuit 11 is fed to the converter 17. Since the value of each slice level is preset by taking the level L0 as the reference, it is sequentially produced according to the output of the counter 18 and fed to the circuit 13. Thus, according to the level variation of the video signal, the slice level is changed for accurate read-in.
COPYRIGHT: (C)1980,JPO&Japio
JP7063579A 1979-06-07 1979-06-07 Read-in unit Pending JPS55164981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7063579A JPS55164981A (en) 1979-06-07 1979-06-07 Read-in unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7063579A JPS55164981A (en) 1979-06-07 1979-06-07 Read-in unit

Publications (1)

Publication Number Publication Date
JPS55164981A true JPS55164981A (en) 1980-12-23

Family

ID=13437290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7063579A Pending JPS55164981A (en) 1979-06-07 1979-06-07 Read-in unit

Country Status (1)

Country Link
JP (1) JPS55164981A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870379A (en) * 1981-10-21 1983-04-26 Oki Electric Ind Co Ltd Optical picture reading method
JPS5892070A (en) * 1981-11-20 1983-06-01 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Dynamic regulator
JPS58158774A (en) * 1982-03-17 1983-09-21 Oki Electric Ind Co Ltd Reading method of bankbook printed data
JPH02153480A (en) * 1988-12-06 1990-06-13 Tokyo Electron Ltd Pattern recognizing device
JPH0549710U (en) * 1991-12-17 1993-06-29 新明和工業株式会社 Garbage suction transport device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126133A (en) * 1974-03-23 1975-10-03
JPS5350610A (en) * 1976-10-19 1978-05-09 Sanyo Electric Co Ltd Video signal processing circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126133A (en) * 1974-03-23 1975-10-03
JPS5350610A (en) * 1976-10-19 1978-05-09 Sanyo Electric Co Ltd Video signal processing circuit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870379A (en) * 1981-10-21 1983-04-26 Oki Electric Ind Co Ltd Optical picture reading method
JPS6316789B2 (en) * 1981-10-21 1988-04-11 Oki Electric Ind Co Ltd
JPS5892070A (en) * 1981-11-20 1983-06-01 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Dynamic regulator
JPH0413748B2 (en) * 1981-11-20 1992-03-10 Fuiritsupusu Furuuiranpenfuaburiken Nv
JPS58158774A (en) * 1982-03-17 1983-09-21 Oki Electric Ind Co Ltd Reading method of bankbook printed data
JPH0324352B2 (en) * 1982-03-17 1991-04-03 Oki Electric Ind Co Ltd
JPH02153480A (en) * 1988-12-06 1990-06-13 Tokyo Electron Ltd Pattern recognizing device
JPH0549710U (en) * 1991-12-17 1993-06-29 新明和工業株式会社 Garbage suction transport device

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