JPS5596765A - Concealment facsimile system - Google Patents
Concealment facsimile systemInfo
- Publication number
- JPS5596765A JPS5596765A JP368879A JP368879A JPS5596765A JP S5596765 A JPS5596765 A JP S5596765A JP 368879 A JP368879 A JP 368879A JP 368879 A JP368879 A JP 368879A JP S5596765 A JPS5596765 A JP S5596765A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- switch
- main scanning
- synchronizing
- scanning period
- 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
Links
Landscapes
- Facsimile Transmission Control (AREA)
Abstract
PURPOSE: To realize a concealment facsimile system where only a specific receiver can receive information, by fluctuating the main scanning period of transmission signals to transmit them and by detecting fluctuation of the main scanning period to control the main scanning period of a receiver in the receiving side.
CONSTITUTION: The interval of main scanning synchronizing signals of facsimile transmission signals is made irregular or is fluctuated in respect to time to transmit them. In the receiving side, inputted facsimile signals are separated into picture signals 42a and synchronizing signals 42b by synchronizing separator circuit 42. Picture signals 42a are applied to switch 44, and clock pulse 46 is received to switch successively output terminals 45a∼45n in a fixed speed. Respective outputs of output terminal 45 are applied to recording needles, which are connected to the outputs above respectively, as recording signals. Meanwhile, synchronizing signals 42b are applied to clear terminal 44b of switch 44 after waveform shaping 43, and at this time, the output of switch 44 is immediately returned to output terminal 45a to switch successively output terminals 45b, 45c... again by the clock pulse.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP368879A JPS5596765A (en) | 1979-01-16 | 1979-01-16 | Concealment facsimile system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP368879A JPS5596765A (en) | 1979-01-16 | 1979-01-16 | Concealment facsimile system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5596765A true JPS5596765A (en) | 1980-07-23 |
Family
ID=11564333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP368879A Pending JPS5596765A (en) | 1979-01-16 | 1979-01-16 | Concealment facsimile system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5596765A (en) |
-
1979
- 1979-01-16 JP JP368879A patent/JPS5596765A/en active Pending
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