JPS553256A - Facimile transmission device - Google Patents

Facimile transmission device

Info

Publication number
JPS553256A
JPS553256A JP7579078A JP7579078A JPS553256A JP S553256 A JPS553256 A JP S553256A JP 7579078 A JP7579078 A JP 7579078A JP 7579078 A JP7579078 A JP 7579078A JP S553256 A JPS553256 A JP S553256A
Authority
JP
Japan
Prior art keywords
circuit
black data
line
picture information
black
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
JP7579078A
Other languages
Japanese (ja)
Inventor
Nobuo Sugino
Kenzo Tatematsu
Hiroyuki Ando
Tatsuo Seki
Yoshiyuki Aida
Takahiko Chuma
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7579078A priority Critical patent/JPS553256A/en
Publication of JPS553256A publication Critical patent/JPS553256A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE: To eliminate the effect given to the reception side caused by the dust, stains and the like attached to the transmission original by dividing the picture information of one line on the transmission original into several sections, deciding the presence or absence of the black information in each divided section and then detecting the number of the black data based on the above decision.
CONSTITUTION: The picture information read out sequentially via photoelectric conversion element 1 is divided into several bolcks through block division circuit 2, and the output B is supplied to black data detection circuit 3. The black data output detected through circuit 3 is applied to counter circuit 4, and the count value is applied to comparator 6 at the moment when the process is finished for the 1-line divided picture information counted by circuit 4 to be then compared with the output of data number designation circuit 5. And in case the black data number is less than the black data setting value, the line is transmitted as the white line. In this way, the effect caused by the dust, stains and the like attached to the transfer original can be eliminated to the reception side.
COPYRIGHT: (C)1980,JPO&Japio
JP7579078A 1978-06-21 1978-06-21 Facimile transmission device Pending JPS553256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7579078A JPS553256A (en) 1978-06-21 1978-06-21 Facimile transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7579078A JPS553256A (en) 1978-06-21 1978-06-21 Facimile transmission device

Publications (1)

Publication Number Publication Date
JPS553256A true JPS553256A (en) 1980-01-11

Family

ID=13586353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7579078A Pending JPS553256A (en) 1978-06-21 1978-06-21 Facimile transmission device

Country Status (1)

Country Link
JP (1) JPS553256A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015093A (en) * 1973-06-13 1975-02-17
JPS515917A (en) * 1974-07-03 1976-01-19 Matsushita Electric Industrial Co Ltd
JPS5210018A (en) * 1975-07-15 1977-01-26 Oki Electric Ind Co Ltd High speed picture transmission device
JPS52107715A (en) * 1976-03-08 1977-09-09 Fuji Xerox Co Ltd Subbscan density variable transmission system
JPS53101218A (en) * 1977-02-16 1978-09-04 Matsushita Electric Ind Co Ltd Facsimile transmission system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015093A (en) * 1973-06-13 1975-02-17
JPS515917A (en) * 1974-07-03 1976-01-19 Matsushita Electric Industrial Co Ltd
JPS5210018A (en) * 1975-07-15 1977-01-26 Oki Electric Ind Co Ltd High speed picture transmission device
JPS52107715A (en) * 1976-03-08 1977-09-09 Fuji Xerox Co Ltd Subbscan density variable transmission system
JPS53101218A (en) * 1977-02-16 1978-09-04 Matsushita Electric Ind Co Ltd Facsimile transmission system

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