JPS553249A - Information transmission system - Google Patents

Information transmission system

Info

Publication number
JPS553249A
JPS553249A JP7568978A JP7568978A JPS553249A JP S553249 A JPS553249 A JP S553249A JP 7568978 A JP7568978 A JP 7568978A JP 7568978 A JP7568978 A JP 7568978A JP S553249 A JPS553249 A JP S553249A
Authority
JP
Japan
Prior art keywords
information
rise
fall
transmission
controlling
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
JP7568978A
Other languages
Japanese (ja)
Inventor
Toshio Matsui
Mutsuyuki Kumagai
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7568978A priority Critical patent/JPS553249A/en
Publication of JPS553249A publication Critical patent/JPS553249A/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 transmit the pulse string signals containing more than two types of information via one piece of the transmission line by providing the information also at both the rise and fall parts of the pulse string which is transmitted to the reception side from the transmission side, and thus to realize the transmission of several types of information. CONSTITUTION:In the information transmission system in which the information to be transmitted to the reception side from the transmission side is expressed in the form of the electric pulse series, the following units are provided at the transmission side: control circuit 13 to control the input; rise controlling transistors Tr1-Trn; fall controlling Tr1-Trn; rise controlling resistances R1, R2...; fall controlling resistances r1, r2...; and capacitor C respectively. Thus, both the high and low level value of the electric pulse series are altered in accordance with logic 0 and 1 each, and the significance is given to both the rise and fall of the output pulse. While several types of logic gates featuring different threshold levels are provided at the reception side in order to carry out the detection for both rise and fall. In such constitution, several types of information can be transmitted via one piece of the transmission line.
JP7568978A 1978-06-22 1978-06-22 Information transmission system Pending JPS553249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7568978A JPS553249A (en) 1978-06-22 1978-06-22 Information transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7568978A JPS553249A (en) 1978-06-22 1978-06-22 Information transmission system

Publications (1)

Publication Number Publication Date
JPS553249A true JPS553249A (en) 1980-01-11

Family

ID=13583410

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7568978A Pending JPS553249A (en) 1978-06-22 1978-06-22 Information transmission system

Country Status (1)

Country Link
JP (1) JPS553249A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746548A (en) * 1980-09-03 1982-03-17 Toshiba Corp Control signal multiplexing circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746548A (en) * 1980-09-03 1982-03-17 Toshiba Corp Control signal multiplexing circuit
JPS636182B2 (en) * 1980-09-03 1988-02-08 Tokyo Shibaura Electric Co

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