JPS5453812A - Facsimile communication system - Google Patents

Facsimile communication system

Info

Publication number
JPS5453812A
JPS5453812A JP11981177A JP11981177A JPS5453812A JP S5453812 A JPS5453812 A JP S5453812A JP 11981177 A JP11981177 A JP 11981177A JP 11981177 A JP11981177 A JP 11981177A JP S5453812 A JPS5453812 A JP S5453812A
Authority
JP
Japan
Prior art keywords
secret
property
unit
receiving
mixer
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.)
Granted
Application number
JP11981177A
Other languages
Japanese (ja)
Other versions
JPS6240904B2 (en
Inventor
Shozo Kudo
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 JP11981177A priority Critical patent/JPS5453812A/en
Publication of JPS5453812A publication Critical patent/JPS5453812A/en
Publication of JPS6240904B2 publication Critical patent/JPS6240904B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Facsimile Transmission Control (AREA)

Abstract

PURPOSE: To improve the reliability of secret keeping to reduce the waste of a work time except the operator by superposing secret-property display signals onto transmission signals.
CONSTITUTION: This system is constituted by facsimile main body 10, input keyboard 20, transmission/receiving connection control part 30, an accumulating storage unit, secret-property signal generator 50, mixer 60, secret-property signal detector circuit 70, secret-property display unit 80 and stacker unit 90. Then, generator 50 gives selectively frequencies f1 and f2 to mixer 60 correspondingly to secret and normality designation of input switches 21 and 22, and frequencies f1 and f2 are superposed onto phase signals and are combined with the output of modulator 13 and are transmitted through control part 30. At a receiving time, detector circuit 70 extracts f1 and f2 selectively; and when f1 is obtained, a signal indicating secret is transmitted to unit 90 and receiving reproduced pictures are supplied to locked stacker 93. Then, the secret property is displayed visually by the indicator lamp of unit 80 by the output of circuit 70
COPYRIGHT: (C)1979,JPO&Japio
JP11981177A 1977-10-05 1977-10-05 Facsimile communication system Granted JPS5453812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11981177A JPS5453812A (en) 1977-10-05 1977-10-05 Facsimile communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11981177A JPS5453812A (en) 1977-10-05 1977-10-05 Facsimile communication system

Publications (2)

Publication Number Publication Date
JPS5453812A true JPS5453812A (en) 1979-04-27
JPS6240904B2 JPS6240904B2 (en) 1987-08-31

Family

ID=14770810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11981177A Granted JPS5453812A (en) 1977-10-05 1977-10-05 Facsimile communication system

Country Status (1)

Country Link
JP (1) JPS5453812A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5566176A (en) * 1978-11-14 1980-05-19 Nippon Telegr & Teleph Corp <Ntt> Facsimile receiver device
JPS5757090A (en) * 1980-09-24 1982-04-06 Hitachi Ltd Sealing facsimile device
JPS58142664A (en) * 1982-02-18 1983-08-24 Fujitsu Ltd Facsimile receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5566176A (en) * 1978-11-14 1980-05-19 Nippon Telegr & Teleph Corp <Ntt> Facsimile receiver device
JPS5757090A (en) * 1980-09-24 1982-04-06 Hitachi Ltd Sealing facsimile device
JPS58142664A (en) * 1982-02-18 1983-08-24 Fujitsu Ltd Facsimile receiver

Also Published As

Publication number Publication date
JPS6240904B2 (en) 1987-08-31

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