JPS57168548A - Noise eliminating device - Google Patents

Noise eliminating device

Info

Publication number
JPS57168548A
JPS57168548A JP56053100A JP5310081A JPS57168548A JP S57168548 A JPS57168548 A JP S57168548A JP 56053100 A JP56053100 A JP 56053100A JP 5310081 A JP5310081 A JP 5310081A JP S57168548 A JPS57168548 A JP S57168548A
Authority
JP
Japan
Prior art keywords
clock signal
noise
frequency component
transmitting
led5a
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
JP56053100A
Other languages
Japanese (ja)
Inventor
Kiyoshi Yoshida
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP56053100A priority Critical patent/JPS57168548A/en
Publication of JPS57168548A publication Critical patent/JPS57168548A/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
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To make an information processing with high fidelity between the transmitting and receiving units, by inserting a photocoupler into a clock signal transmission line and eliminating the high frequency component of the noise induced to the transmission line. CONSTITUTION:The clock signal containing the noise is amplified by a transistor TR4 of an eliminating circuit to actuate an LED5a for emission of light. The light emitted from the LED5a is received by a phototransistor 5b and then inverted by an inverter 6 to eliminate the high frequency component of the noise for the signal. The clock signal delivered from the eliminating circuit contains the residual low frequency component, and this clock signal is supplied to both the receiving and transmitting units. This clock signal contains no shift of phase to cause no shift of synchronization between the transmitting and receiving units to ensure an information process with high fidelity.
JP56053100A 1981-04-10 1981-04-10 Noise eliminating device Pending JPS57168548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56053100A JPS57168548A (en) 1981-04-10 1981-04-10 Noise eliminating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56053100A JPS57168548A (en) 1981-04-10 1981-04-10 Noise eliminating device

Publications (1)

Publication Number Publication Date
JPS57168548A true JPS57168548A (en) 1982-10-16

Family

ID=12933363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56053100A Pending JPS57168548A (en) 1981-04-10 1981-04-10 Noise eliminating device

Country Status (1)

Country Link
JP (1) JPS57168548A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0438151U (en) * 1990-07-27 1992-03-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0438151U (en) * 1990-07-27 1992-03-31

Similar Documents

Publication Publication Date Title
JPS6469132A (en) Initial synchronizing system for spectrum diffusion communication
JPS56165437A (en) Optical repeating system for optical communication
ES8304733A1 (en) Method and arrangement for the simultaneous transmission of information by several common-wave transmitters.
JPS57168548A (en) Noise eliminating device
ES8308459A1 (en) A method of bringing an oscillator into phase with an incoming signal and an apparatus for carrying out the method.
JPS5387123A (en) Information processing unit
JPS5673946A (en) Loop constituting system for data transmission system
JPS55127778A (en) Terminal control unit of catv system
DK442884D0 (en) PROCEDURE AND APPARATUS FOR TRANSMISSION OF ACOUSTIC INFORMATION AS SUBJECT VIBRATIONS
JPS543406A (en) Data receiving system
JPS53131716A (en) Digital signal transmission system
JPS523318A (en) Howler circuit
JPS5723346A (en) Code approving circuit
JPS5685125A (en) Power supply control device of terminal equipment
JPS51117814A (en) Receiver
JPS5516575A (en) Sending method for digital signal
JPS5467711A (en) Receiving data signal generator circuit
JPS5238971A (en) Automatic correction electronic watch
JPS51141504A (en) Cyclic digital information transmission system
JPS54141502A (en) Data transmission system
JPS56168462A (en) Data transmitting system
JPS5489761A (en) counter synchronizing circuit
JPS5527784A (en) Remote control type automatic answering telephone set
JPS5647150A (en) Received data control system
JPS5244516A (en) Tv receiver