JPS5596716A - Adaptive type automatic equalizing unit - Google Patents

Adaptive type automatic equalizing unit

Info

Publication number
JPS5596716A
JPS5596716A JP365879A JP365879A JPS5596716A JP S5596716 A JPS5596716 A JP S5596716A JP 365879 A JP365879 A JP 365879A JP 365879 A JP365879 A JP 365879A JP S5596716 A JPS5596716 A JP S5596716A
Authority
JP
Japan
Prior art keywords
signal
circuit
base band
phase
equalizing unit
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
JP365879A
Other languages
Japanese (ja)
Other versions
JPS6334651B2 (en
Inventor
Hiroshi Tokimasa
Koji Aoki
Kiyohiro Yamazaki
Hiroshi Yamada
Yoshinobu Kasai
Tadao Nagatsuma
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.)
Fujitsu Ltd
Japan Broadcasting Corp
Original Assignee
Fujitsu Ltd
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
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 Fujitsu Ltd, Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Fujitsu Ltd
Priority to JP365879A priority Critical patent/JPS5596716A/en
Publication of JPS5596716A publication Critical patent/JPS5596716A/en
Publication of JPS6334651B2 publication Critical patent/JPS6334651B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H15/00—Transversal filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks

Landscapes

  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To constitute an equalizing unit cheaply by inserting a transversal filter part to the IF band and by inserting a detection part to the base band in the equalizing unit which equalizes automatically the linear waveform distortion such as ghost adaptively. CONSTITUTION:An inputted IF signal is demodulated to a base band signal in a demodulator by a carrier signal which has the phase controlled by carier phase control circuit 49, and this base band signal is clamped by clamp circuit 54 and is inputted to comparator circuit 55. This signal is compared with the reference waveform of a test signal in circuit 55 to control taps of delay lines 42 and 44 through shift register 57 and memory 60. Circuit 49 detects phase slippage on a basis of the signal of memory 60 to control the phase. Thus, the IF band can be automatically equalized as it is without conversion to the base band signal, so that degradation of quality can be prevented, and the unit can be constituted cheaply.
JP365879A 1979-01-16 1979-01-16 Adaptive type automatic equalizing unit Granted JPS5596716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP365879A JPS5596716A (en) 1979-01-16 1979-01-16 Adaptive type automatic equalizing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP365879A JPS5596716A (en) 1979-01-16 1979-01-16 Adaptive type automatic equalizing unit

Publications (2)

Publication Number Publication Date
JPS5596716A true JPS5596716A (en) 1980-07-23
JPS6334651B2 JPS6334651B2 (en) 1988-07-12

Family

ID=11563554

Family Applications (1)

Application Number Title Priority Date Filing Date
JP365879A Granted JPS5596716A (en) 1979-01-16 1979-01-16 Adaptive type automatic equalizing unit

Country Status (1)

Country Link
JP (1) JPS5596716A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50140237A (en) * 1974-04-26 1975-11-10
JPS5182548A (en) * 1974-12-27 1976-07-20 Fujitsu Ltd Jidotokaki

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50140237A (en) * 1974-04-26 1975-11-10
JPS5182548A (en) * 1974-12-27 1976-07-20 Fujitsu Ltd Jidotokaki

Also Published As

Publication number Publication date
JPS6334651B2 (en) 1988-07-12

Similar Documents

Publication Publication Date Title
JP3083539B2 (en) Receiver for time-varying distortion signals
CA2084034A1 (en) Adaptive receiver apparatus
EP0228771A3 (en) Data transmission system
KR950030648A (en) HDTV's terrestrial and cable broadcast signal receiver
CA2047164A1 (en) Adaptive equalizer with channel impulse response estimation
WO1998027719A3 (en) A digital receiver
DE3477718D1 (en) Adaptive equalizer for digital signals affected by distorsions with time varying characteristics
GB2252221B (en) Improvements in or relating to equalisers for digital radio communication systems
CA2165815A1 (en) Digital radio communication device
CA2061078A1 (en) Adaptive equalizer which carries out an equalization operation with reference to a magnitude of fading
US4424533A (en) Phase distortion detection circuitry for low cost automatic equalizer
JPS5596716A (en) Adaptive type automatic equalizing unit
CA2013451A1 (en) Adjacent channel interference canceller with means for minimizing intersymbol interference
DE3066853D1 (en) Device for the automatic equalization of electric data transmission paths
EP0106136A3 (en) Digitally controlled transversal equalizer
JPS55138968A (en) Phase pulse signal regeneration method
JPS5459810A (en) Signal waveform transmission system
GB1412747A (en) Method and apparatus for use in a data transmission system
JPS56111331A (en) Two-dimentionally applied type automatic equalizer
JPS6474830A (en) Automatic amplitude equalization circuit
JPS5797738A (en) Nonlinear equalizer
JPS59112714A (en) Automatic waveform equalizer
JPS53145510A (en) 2-dimensional automatic equalizer
JPS5570170A (en) Circuit automatic equalizer for analog facsimile
JPS5797737A (en) Nonlinear equalizer