JPS5560375A - Equalization system for facsimile signal - Google Patents

Equalization system for facsimile signal

Info

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
Application number
JP13235478A
Other languages
Japanese (ja)
Inventor
Meiki Yahata
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13235478A priority Critical patent/JPS5560375A/en
Publication of JPS5560375A publication Critical patent/JPS5560375A/en
Pending legal-status Critical Current

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
JP13235478A 1978-10-27 1978-10-27 Equalization system for facsimile signal Pending JPS5560375A (en)

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)

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