JPS55105460A - Signal transmission system - Google Patents

Signal transmission system

Info

Publication number
JPS55105460A
JPS55105460A JP1316379A JP1316379A JPS55105460A JP S55105460 A JPS55105460 A JP S55105460A JP 1316379 A JP1316379 A JP 1316379A JP 1316379 A JP1316379 A JP 1316379A JP S55105460 A JPS55105460 A JP S55105460A
Authority
JP
Japan
Prior art keywords
circuit
signal
slave unit
line
carrier
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
JP1316379A
Other languages
Japanese (ja)
Inventor
Hitoshi Fukagawa
Isao Shimada
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP1316379A priority Critical patent/JPS55105460A/en
Publication of JPS55105460A publication Critical patent/JPS55105460A/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
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To secure the sufficient reproduction capacity for the master unit to the impedance fluctuation of the signal line, by carrying out the signal transmission between the master unit and the slave unit via the carrier signal of the single frequency and at the same time simplifying the circuit constitution of the slave unit. CONSTITUTION:Transistor Q1 is turned on and off at the slave unit via the return signal pulse sent from return signal generation circuit 6. With ON of Q1, full-wave rectifier BD1 is turned on, and the short-circuit is given to signal line 2 by the serial resonance circuit consisting of coil L1 and capacitor C1. Here if the coincidence is secured previously between the serial resonance frequency and the carrier frequency, line 2 receives the short-circuit in terms of the carrier frequency when the signal from circuit 6 features H. At the return signal reproduction circuit of master unit 1, the carrier signal sent from amplitude modulator circuit 7 is supplied to line 2. In case the carrier signal is short-circuited at the slave unit, the secondary side waveform of transformer T1 is detected through the 1st and the 2nd detection circuits 8 and 9. And each detection output is applied to comparator Q2. As a result, the return signal from the slave unit is reproduced at the output of Q2.
JP1316379A 1979-02-07 1979-02-07 Signal transmission system Pending JPS55105460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1316379A JPS55105460A (en) 1979-02-07 1979-02-07 Signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1316379A JPS55105460A (en) 1979-02-07 1979-02-07 Signal transmission system

Publications (1)

Publication Number Publication Date
JPS55105460A true JPS55105460A (en) 1980-08-13

Family

ID=11825494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1316379A Pending JPS55105460A (en) 1979-02-07 1979-02-07 Signal transmission system

Country Status (1)

Country Link
JP (1) JPS55105460A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6022832A (en) * 1983-07-18 1985-02-05 Matsushita Electric Ind Co Ltd Transmission and reception system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6022832A (en) * 1983-07-18 1985-02-05 Matsushita Electric Ind Co Ltd Transmission and reception system

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