JPS56110322A - Automatic amplitude equalizer - Google Patents

Automatic amplitude equalizer

Info

Publication number
JPS56110322A
JPS56110322A JP1278180A JP1278180A JPS56110322A JP S56110322 A JPS56110322 A JP S56110322A JP 1278180 A JP1278180 A JP 1278180A JP 1278180 A JP1278180 A JP 1278180A JP S56110322 A JPS56110322 A JP S56110322A
Authority
JP
Japan
Prior art keywords
circuit
signal
equalizer
equalization
amplitude
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
JP1278180A
Other languages
Japanese (ja)
Inventor
Yukio Kawada
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.)
Panasonic System Solutions Japan Co Ltd
Original Assignee
Matsushita Graphic Communication Systems Inc
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 Matsushita Graphic Communication Systems Inc filed Critical Matsushita Graphic Communication Systems Inc
Priority to JP1278180A priority Critical patent/JPS56110322A/en
Publication of JPS56110322A publication Critical patent/JPS56110322A/en
Pending 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)
  • Filters That Use Time-Delay Elements (AREA)
  • Networks Using Active Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Facsimile Transmission Control (AREA)

Abstract

PURPOSE:To realize the optimum equalization of amplitude in a short time, by giving a switching action to an amplitude equalizer to secure an equal gain between the 1st and 2nd signals. CONSTITUTION:The 1st signal arrived at the input terminal 17 is supplied to the AGC circuit A via the equalizer 1a as well as to the frequency deciding circuit 13. The circuit 13 decides that the input signal is the first signal and then opens the analog switch 6 to set to the circuit A at a fixed amplification factor. The second signal arrives and compared with the reference level Vr at the comparator 5 and via the circuit A. In case the equalization is insufficient, the gate circuit 11 is opened. Then the counting of the counter 12 is advanced by the clock pulse signal, and the analog switch 2 is switched to select the 2nd equalizer 1b having a large characteristics of equalization.
JP1278180A 1980-02-04 1980-02-04 Automatic amplitude equalizer Pending JPS56110322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1278180A JPS56110322A (en) 1980-02-04 1980-02-04 Automatic amplitude equalizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1278180A JPS56110322A (en) 1980-02-04 1980-02-04 Automatic amplitude equalizer

Publications (1)

Publication Number Publication Date
JPS56110322A true JPS56110322A (en) 1981-09-01

Family

ID=11814936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1278180A Pending JPS56110322A (en) 1980-02-04 1980-02-04 Automatic amplitude equalizer

Country Status (1)

Country Link
JP (1) JPS56110322A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151172A (en) * 1982-03-03 1983-09-08 Nippon Telegr & Teleph Corp <Ntt> Facsimile device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151172A (en) * 1982-03-03 1983-09-08 Nippon Telegr & Teleph Corp <Ntt> Facsimile device

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