JPS56149820A - Analog automatic equalizer and its driving method - Google Patents

Analog automatic equalizer and its driving method

Info

Publication number
JPS56149820A
JPS56149820A JP5390180A JP5390180A JPS56149820A JP S56149820 A JPS56149820 A JP S56149820A JP 5390180 A JP5390180 A JP 5390180A JP 5390180 A JP5390180 A JP 5390180A JP S56149820 A JPS56149820 A JP S56149820A
Authority
JP
Japan
Prior art keywords
signal
analog
automatic equalizer
fetched
multiplied
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
JP5390180A
Other languages
Japanese (ja)
Other versions
JPS6329444B2 (en
Inventor
Tsutomu Ishihara
Tadayoshi Enomoto
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5390180A priority Critical patent/JPS56149820A/en
Publication of JPS56149820A publication Critical patent/JPS56149820A/en
Publication of JPS6329444B2 publication Critical patent/JPS6329444B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/142—Control of transmission; Equalising characterised by the equalising network used using echo-equalisers, e.g. transversal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To make a system smal and to realize its low cost, high reliability and also wide band, by constituting an automatic equalizer of an analog circuit. CONSTITUTION:A signal which has been inputted to the terminal 2 is inputted to the analog delay line 1. On the analog delay line 1 are provided taps, and a signal which has been fetched from each tap is multiplied by a weighting coefficient in the analog multipliers 5-1, 5-2.... The weighting coefficient can be obtained by mutliplying in the multiplier 6-M a signal which has multiplied an error signal E (n) generated from a difference between an output signal Y (n) and a reference signal a (n), by an analog constant (u), by a signal which has been fetched from the taps 4-1, 4-2..., and always updating a signal which has been obtained in this way, by the arithmetic circuit consisting of substracters 20-1, 20-2... and CCD memory elements 21-1, 21-2....
JP5390180A 1980-04-23 1980-04-23 Analog automatic equalizer and its driving method Granted JPS56149820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5390180A JPS56149820A (en) 1980-04-23 1980-04-23 Analog automatic equalizer and its driving method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5390180A JPS56149820A (en) 1980-04-23 1980-04-23 Analog automatic equalizer and its driving method

Publications (2)

Publication Number Publication Date
JPS56149820A true JPS56149820A (en) 1981-11-19
JPS6329444B2 JPS6329444B2 (en) 1988-06-14

Family

ID=12955615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5390180A Granted JPS56149820A (en) 1980-04-23 1980-04-23 Analog automatic equalizer and its driving method

Country Status (1)

Country Link
JP (1) JPS56149820A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5215212A (en) * 1975-07-23 1977-02-04 Codex Corp Receiver
JPS53111258A (en) * 1977-01-10 1978-09-28 Texas Instruments Inc Programmable frequency conversion filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5215212A (en) * 1975-07-23 1977-02-04 Codex Corp Receiver
JPS53111258A (en) * 1977-01-10 1978-09-28 Texas Instruments Inc Programmable frequency conversion filter

Also Published As

Publication number Publication date
JPS6329444B2 (en) 1988-06-14

Similar Documents

Publication Publication Date Title
ES8308661A1 (en) Digital signal separation filters
JPS56166620A (en) Automatic equalizer
JPS5776910A (en) Ghost rejecting device
EP0182602A3 (en) Digital filter
ES8206131A1 (en) Input-weighted transversal filter TV ghost eliminator
JPS56107630A (en) Delay time adjusting circuit
JPS56149820A (en) Analog automatic equalizer and its driving method
JPS5763985A (en) Processing circuit of chroma signal
CA2051858A1 (en) Digital filter
US4779217A (en) Octave multiple filter
JPS5721118A (en) Digital filter device
JPS5630316A (en) Cyclic filter
JPS56158523A (en) Cascade connection system of charge transfer type transversal filter
JPS5739610A (en) Broadband ccd delay line
JPS6465919A (en) Non-linear emphasis circuit
JPS57556A (en) Digital amplitude detecting circuit
JPS57136813A (en) Resistance branching circuit
JPS5721115A (en) Digital filter device
SU881985A1 (en) Programmable transversal filter
JPS5715507A (en) Amplifier
JPS5768916A (en) Delay circuit
JPS5639613A (en) Circuit substrate for surface wave filter element
JPS5797737A (en) Nonlinear equalizer
JPS564925A (en) Monostable multivibrating circuit
JPS5592017A (en) Digital filter