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JPS57136845A - Coding and transfer system of information data - Google Patents

Coding and transfer system of information data

Info

Publication number
JPS57136845A
JPS57136845A JP2243381A JP2243381A JPS57136845A JP S57136845 A JPS57136845 A JP S57136845A JP 2243381 A JP2243381 A JP 2243381A JP 2243381 A JP2243381 A JP 2243381A JP S57136845 A JPS57136845 A JP S57136845A
Authority
JP
Japan
Prior art keywords
signal
information data
coding
binary signal
state
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
JP2243381A
Other languages
Japanese (ja)
Inventor
Kazuhiko Takahara
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.)
AIHON KK
Aiphone Co Ltd
Original Assignee
AIHON KK
Aiphone 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 AIHON KK, Aiphone Co Ltd filed Critical AIHON KK
Priority to JP2243381A priority Critical patent/JPS57136845A/en
Publication of JPS57136845A publication Critical patent/JPS57136845A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4902—Pulse width modulation; Pulse position modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To realize the transfer of the information data with high stability and high reliability and with a comparatively simple constitution of circuit, by transmitting the information data after coding it to a binary signal having a prescribed time ratio corresponding to plural information data respectively and reproducing the binary signal at the receiver side. CONSTITUTION:Plural information data is transmitted by coding a dial signal to a binary signal 10 for example. This binary signal consists of a signal part of the 1st state and a signal part 12 of the 2nd state different from the 1st state. The time duration ratio TH and TL of these signal parts 11 and 12 is varied to ensure a correspondence between a dial signal and a time ratio TH/TL. At the receiver side, the binary signal coded and transmitted is reproduced to the original dial signal.
JP2243381A 1981-02-17 1981-02-17 Coding and transfer system of information data Pending JPS57136845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2243381A JPS57136845A (en) 1981-02-17 1981-02-17 Coding and transfer system of information data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2243381A JPS57136845A (en) 1981-02-17 1981-02-17 Coding and transfer system of information data

Publications (1)

Publication Number Publication Date
JPS57136845A true JPS57136845A (en) 1982-08-24

Family

ID=12082554

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2243381A Pending JPS57136845A (en) 1981-02-17 1981-02-17 Coding and transfer system of information data

Country Status (1)

Country Link
JP (1) JPS57136845A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5964940A (en) * 1982-09-02 1984-04-13 ブリティシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニ Light communication system and converter therefor
WO1998033306A1 (en) * 1997-01-27 1998-07-30 Hirosi Fukuda Method of using multisignal single unit and plural unit
WO1998036544A1 (en) * 1997-02-12 1998-08-20 Hirosi Fukuda Voice and image signal transmission method using code output
US6628596B2 (en) 1997-01-27 2003-09-30 Hirosi Fukuda Multi-valued data elements for computer systems

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4214604Y1 (en) * 1967-02-15 1967-08-21
JPS55143826A (en) * 1979-04-26 1980-11-10 Mitsubishi Electric Corp Pulse modulation system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4214604Y1 (en) * 1967-02-15 1967-08-21
JPS55143826A (en) * 1979-04-26 1980-11-10 Mitsubishi Electric Corp Pulse modulation system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5964940A (en) * 1982-09-02 1984-04-13 ブリティシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニ Light communication system and converter therefor
JPH0439810B2 (en) * 1982-09-02 1992-06-30
WO1998033306A1 (en) * 1997-01-27 1998-07-30 Hirosi Fukuda Method of using multisignal single unit and plural unit
US6628596B2 (en) 1997-01-27 2003-09-30 Hirosi Fukuda Multi-valued data elements for computer systems
WO1998036544A1 (en) * 1997-02-12 1998-08-20 Hirosi Fukuda Voice and image signal transmission method using code output
US6643341B1 (en) 1997-02-12 2003-11-04 Hirosi Fukuda Voice and image signal transmission method using code output

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