JPS53110304A - Data modulator and demodulator - Google Patents

Data modulator and demodulator

Info

Publication number
JPS53110304A
JPS53110304A JP2572077A JP2572077A JPS53110304A JP S53110304 A JPS53110304 A JP S53110304A JP 2572077 A JP2572077 A JP 2572077A JP 2572077 A JP2572077 A JP 2572077A JP S53110304 A JPS53110304 A JP S53110304A
Authority
JP
Japan
Prior art keywords
demodulator
data modulator
equalization
optimum
utilizing
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
JP2572077A
Other languages
Japanese (ja)
Inventor
Isao Watanabe
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 JP2572077A priority Critical patent/JPS53110304A/en
Publication of JPS53110304A publication Critical patent/JPS53110304A/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
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying

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 make data transmission dependent upon high-speed sound coupling possible with performing the equalization optimum to carbon transmitter' s characteristic by utilizing the side tone in a telephone set.
JP2572077A 1977-03-08 1977-03-08 Data modulator and demodulator Pending JPS53110304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2572077A JPS53110304A (en) 1977-03-08 1977-03-08 Data modulator and demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2572077A JPS53110304A (en) 1977-03-08 1977-03-08 Data modulator and demodulator

Publications (1)

Publication Number Publication Date
JPS53110304A true JPS53110304A (en) 1978-09-27

Family

ID=12173622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2572077A Pending JPS53110304A (en) 1977-03-08 1977-03-08 Data modulator and demodulator

Country Status (1)

Country Link
JP (1) JPS53110304A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55143866A (en) * 1979-02-21 1980-11-10 Anderson Jacobson Inc Interface circuit for compensating acoustic coupler
JPS61183347U (en) * 1985-05-09 1986-11-15

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55143866A (en) * 1979-02-21 1980-11-10 Anderson Jacobson Inc Interface circuit for compensating acoustic coupler
JPS61183347U (en) * 1985-05-09 1986-11-15

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