JPS535512A - Facsimile transmission system - Google Patents

Facsimile transmission system

Info

Publication number
JPS535512A
JPS535512A JP7942276A JP7942276A JPS535512A JP S535512 A JPS535512 A JP S535512A JP 7942276 A JP7942276 A JP 7942276A JP 7942276 A JP7942276 A JP 7942276A JP S535512 A JPS535512 A JP S535512A
Authority
JP
Japan
Prior art keywords
transmission system
facsimile transmission
perform
signals
facsimile
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
JP7942276A
Other languages
Japanese (ja)
Inventor
Kazuo Kobayashi
Kiyohiro Yuuki
Yutaka Suzuki
Yoshio Horiuchi
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP7942276A priority Critical patent/JPS535512A/en
Publication of JPS535512A publication Critical patent/JPS535512A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/361—Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

PURPOSE:To perform an effective band compression for the facsimile signals, etc. by generating AM-PM signals which perform a phase inversion of carrier waves at the signal minimum point.
JP7942276A 1976-07-06 1976-07-06 Facsimile transmission system Pending JPS535512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7942276A JPS535512A (en) 1976-07-06 1976-07-06 Facsimile transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7942276A JPS535512A (en) 1976-07-06 1976-07-06 Facsimile transmission system

Publications (1)

Publication Number Publication Date
JPS535512A true JPS535512A (en) 1978-01-19

Family

ID=13689417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7942276A Pending JPS535512A (en) 1976-07-06 1976-07-06 Facsimile transmission system

Country Status (1)

Country Link
JP (1) JPS535512A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502404A (en) * 1973-05-08 1975-01-11
JPS5115914A (en) * 1974-07-19 1976-02-07 Nippon Telegraph & Telephone

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502404A (en) * 1973-05-08 1975-01-11
JPS5115914A (en) * 1974-07-19 1976-02-07 Nippon Telegraph & Telephone

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