JPS55138169A - Picture signal control system of picture input unit - Google Patents

Picture signal control system of picture input unit

Info

Publication number
JPS55138169A
JPS55138169A JP4708779A JP4708779A JPS55138169A JP S55138169 A JPS55138169 A JP S55138169A JP 4708779 A JP4708779 A JP 4708779A JP 4708779 A JP4708779 A JP 4708779A JP S55138169 A JPS55138169 A JP S55138169A
Authority
JP
Japan
Prior art keywords
document
picture
signal
signals obtained
time
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
JP4708779A
Other languages
Japanese (ja)
Inventor
Seiji Inuyama
Kiyokazu Hanatani
Norio Kanemitsu
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 JP4708779A priority Critical patent/JPS55138169A/en
Publication of JPS55138169A publication Critical patent/JPS55138169A/en
Pending legal-status Critical Current

Links

Landscapes

  • Image Input (AREA)
  • Facsimile Heads (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE: To prevent error recognition of characters by equalizing in magnitude signals obtained from parts, equal in shade value, on the surface of picture recording part, etc., by controlling picture signals obtained from an image sensor corresponding to the moving speed of the recording paper.
CONSTITUTION: Document 1 is irradiated with light 2; a photo signal reflected by document 1 is converted by image sensor 3 into an electric signal, which is amplified by amplification part 7 and then converted by A/D converter 8 into a digital signal to output the picture signal of document 1. A picture input unit of this constitution is provided with pulse generator 4 which generates a pulse signal every time document 1 moves by a unit length and the pulse signal from this generator 4 is applied to the 1st and 2nd timer counters 5 and 6 to measure the time that document 1 takes to advance by a distance of one scan. Then, the gain of amplification part 7 is controlled corresponding to the time of relative unit-length movement between sensor 3 and document 1 to equalize in magnitude signals obtained from parts having an equal shade part, thereby bringing recognition of characters to effect with accuracy.
COPYRIGHT: (C)1980,JPO&Japio
JP4708779A 1979-04-17 1979-04-17 Picture signal control system of picture input unit Pending JPS55138169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4708779A JPS55138169A (en) 1979-04-17 1979-04-17 Picture signal control system of picture input unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4708779A JPS55138169A (en) 1979-04-17 1979-04-17 Picture signal control system of picture input unit

Publications (1)

Publication Number Publication Date
JPS55138169A true JPS55138169A (en) 1980-10-28

Family

ID=12765387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4708779A Pending JPS55138169A (en) 1979-04-17 1979-04-17 Picture signal control system of picture input unit

Country Status (1)

Country Link
JP (1) JPS55138169A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927379A (en) * 1982-08-09 1984-02-13 Hitachi Ltd Pattern video signal processing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927379A (en) * 1982-08-09 1984-02-13 Hitachi Ltd Pattern video signal processing system

Similar Documents

Publication Publication Date Title
JPS5644803A (en) System measuring for thickness of nonmetallic sheet like object
JPS5776974A (en) Method and apparatus for read-in of radiant rays picture information
JPS5385453A (en) Distance detecting method
JPS5449147A (en) Recorder
JPS5697325A (en) Focus detecting method of camera
JPS55138169A (en) Picture signal control system of picture input unit
JPS52122038A (en) Fixed noise elimination of solid image sensor
JPS52102701A (en) Optical recording system
JPS5459169A (en) Size measuring apparatus
GB2002898A (en) Optoelectronic tachometer
JPS55158772A (en) Picture signal producing device
JPS538136A (en) Copying process by means of laser
JPS5417038A (en) Optical scanning system
JPS55157741A (en) Information making and recording apparatus for adjusting color scanner
JPS5566064A (en) Original reader
JPS5419760A (en) System for simultaneously scanning plural beams
JPS53148314A (en) Control method of feeding solid state image sensor
JPS55162175A (en) Photoelectric converter
JPS53145413A (en) Sending control system for solid state image sensor
JPS542630A (en) Character read system
JPS57147168A (en) Jumping scanner
JPS5356916A (en) Picture read system
JPS55138738A (en) Light quantity control system in image input device
JPS5577920A (en) Draft controller for rolling mill
JPS5528160A (en) Servo mechanism