JPS5560375A - Equalization system for facsimile signal - Google Patents
Equalization system for facsimile signalInfo
- Publication number
- JPS5560375A JPS5560375A JP13235478A JP13235478A JPS5560375A JP S5560375 A JPS5560375 A JP S5560375A JP 13235478 A JP13235478 A JP 13235478A JP 13235478 A JP13235478 A JP 13235478A JP S5560375 A JPS5560375 A JP S5560375A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- tap
- inputted
- error
- circuit
- 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 Image Signal Circuits (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
PURPOSE: To eliminate effectively the generation of a ghost signal due to transmission distortion by controlling the tap gain on the basis of an error between a test signal and reference signal.
CONSTITUTION: An input signal is inputted to tap delay line 1 composed of shift registers, etc. Outputs from respective taps are respectively inputted to tap coefficient units 2-N∼2N, where they are multiplied by tap gains C-N∼CN and added together by adder circuit 3, whose output is sent out as an equalization signal. Then, this equalization signal is inputted to error arithmetic circuit 4, which obtain an error signal with a reference signal from reference signal generating circuit 5 in accordance with a signal from polarity detection circuit 6. Then, this error signal is inputted to tap gain control circuit 7 for corrections of tap gains.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13235478A JPS5560375A (en) | 1978-10-27 | 1978-10-27 | Equalization system for facsimile signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13235478A JPS5560375A (en) | 1978-10-27 | 1978-10-27 | Equalization system for facsimile signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5560375A true JPS5560375A (en) | 1980-05-07 |
Family
ID=15079392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13235478A Pending JPS5560375A (en) | 1978-10-27 | 1978-10-27 | Equalization system for facsimile signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5560375A (en) |
-
1978
- 1978-10-27 JP JP13235478A patent/JPS5560375A/en active Pending
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