JPS5534514A - Picture information reading device - Google Patents

Picture information reading device

Info

Publication number
JPS5534514A
JPS5534514A JP10627678A JP10627678A JPS5534514A JP S5534514 A JPS5534514 A JP S5534514A JP 10627678 A JP10627678 A JP 10627678A JP 10627678 A JP10627678 A JP 10627678A JP S5534514 A JPS5534514 A JP S5534514A
Authority
JP
Japan
Prior art keywords
picture
video output
binary coded
voltage
binary
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
JP10627678A
Other languages
Japanese (ja)
Inventor
Shingo 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.)
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 JP10627678A priority Critical patent/JPS5534514A/en
Publication of JPS5534514A publication Critical patent/JPS5534514A/en
Pending legal-status Critical Current

Links

Landscapes

  • Image Input (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE: To improve the S/N and then to obtain the binary coded video output faithful to the original picture by supplying the picture signals to the amplifier the amplification factor of which varies automatically according to the picture signal levels and then giving the binary coding to the output of the amplifier.
CONSTITUTION: Switches S1∼S4 are actuated selectively in accordance with the fixed reading scan position. Correction voltage vb applied to multiplier 13 varies according to the reading position of scanner 10. At multiplier 13 the multiplication is given in sequence to picture signal voltage va obtained from scanner 10 with every picture element and voltage vb, thus obtaining nearly the uniform picture signals over the entire scanning lines. These picture signals are then binary coded through binary coding circuit 14 to obtain the binary coded video output faithful to the original picture. This video output is then transmitted to the reception side via data compressor 15 and MODEM16.
COPYRIGHT: (C)1980,JPO&Japio
JP10627678A 1978-09-01 1978-09-01 Picture information reading device Pending JPS5534514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10627678A JPS5534514A (en) 1978-09-01 1978-09-01 Picture information reading device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10627678A JPS5534514A (en) 1978-09-01 1978-09-01 Picture information reading device

Publications (1)

Publication Number Publication Date
JPS5534514A true JPS5534514A (en) 1980-03-11

Family

ID=14429547

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10627678A Pending JPS5534514A (en) 1978-09-01 1978-09-01 Picture information reading device

Country Status (1)

Country Link
JP (1) JPS5534514A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53148420A (en) * 1977-05-30 1978-12-25 Sansui Electric Co Digital meter for residual tape quantity
JPS57147364A (en) * 1981-03-09 1982-09-11 Nippon Telegr & Teleph Corp <Ntt> Telephone set terminal of switchboard system capable of voice storing service
JPH01177276A (en) * 1988-01-05 1989-07-13 Tokyo Electric Co Ltd Picture reader

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344115A (en) * 1976-10-02 1978-04-20 Nec Corp Phototelegraphy picture receiver-transmitter equipment
JPS5377120A (en) * 1976-12-20 1978-07-08 Ricoh Co Ltd Read-in system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344115A (en) * 1976-10-02 1978-04-20 Nec Corp Phototelegraphy picture receiver-transmitter equipment
JPS5377120A (en) * 1976-12-20 1978-07-08 Ricoh Co Ltd Read-in system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53148420A (en) * 1977-05-30 1978-12-25 Sansui Electric Co Digital meter for residual tape quantity
JPS57147364A (en) * 1981-03-09 1982-09-11 Nippon Telegr & Teleph Corp <Ntt> Telephone set terminal of switchboard system capable of voice storing service
JPH0120824B2 (en) * 1981-03-09 1989-04-18 Nippon Telegraph & Telephone
JPH01177276A (en) * 1988-01-05 1989-07-13 Tokyo Electric Co Ltd Picture reader

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