JPS5484950A - Variable attenuation equalizer - Google Patents

Variable attenuation equalizer

Info

Publication number
JPS5484950A
JPS5484950A JP15245777A JP15245777A JPS5484950A JP S5484950 A JPS5484950 A JP S5484950A JP 15245777 A JP15245777 A JP 15245777A JP 15245777 A JP15245777 A JP 15245777A JP S5484950 A JPS5484950 A JP S5484950A
Authority
JP
Japan
Prior art keywords
adder
multiplier
variable
output
fixed
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
JP15245777A
Other languages
Japanese (ja)
Other versions
JPS6113654B2 (en
Inventor
Kenji Nakayama
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 JP15245777A priority Critical patent/JPS5484950A/en
Publication of JPS5484950A publication Critical patent/JPS5484950A/en
Publication of JPS6113654B2 publication Critical patent/JPS6113654B2/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
    • H04B3/143—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers
    • H04B3/145—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers variable equalisers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To proportionally shift the frequency versus attenuation performance of the input signal sampled at the frequency band toward attenuation, by constituting the variable attenuation equalizer with the combination of simple elements. CONSTITUTION:The first adder 4 inputting input signal via the fixed multiplier and the second adder 5 inputting the output of the adder 4 via the second fixed multiplier 7 are provided. Further, the adder 5 is provided with the fixed multiplier 3, which receives the output of the post stage of the filter block 1 including the variable multiplier 2 and delay circit receiving the output of the adder 4. Further, the variable attenuation equalizer is constituted by providing the fixed adder 8 which receives the output at the post stage of the filter block 1 and adds it to the adder 4 in feedback manner. In addition, the variable multiplier 2' of the filter block 1 including the variable attenuator 2 and delay circuit is connected to the pre-stage and the output of the variable multiplier 2' at the pre-stage is added to the adder 5 via the fixed multiplier 9.
JP15245777A 1977-12-20 1977-12-20 Variable attenuation equalizer Granted JPS5484950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15245777A JPS5484950A (en) 1977-12-20 1977-12-20 Variable attenuation equalizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15245777A JPS5484950A (en) 1977-12-20 1977-12-20 Variable attenuation equalizer

Publications (2)

Publication Number Publication Date
JPS5484950A true JPS5484950A (en) 1979-07-06
JPS6113654B2 JPS6113654B2 (en) 1986-04-15

Family

ID=15540926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15245777A Granted JPS5484950A (en) 1977-12-20 1977-12-20 Variable attenuation equalizer

Country Status (1)

Country Link
JP (1) JPS5484950A (en)

Also Published As

Publication number Publication date
JPS6113654B2 (en) 1986-04-15

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