JPS5538721A - Polarity deciding system for transmission signal - Google Patents

Polarity deciding system for transmission signal

Info

Publication number
JPS5538721A
JPS5538721A JP11095878A JP11095878A JPS5538721A JP S5538721 A JPS5538721 A JP S5538721A JP 11095878 A JP11095878 A JP 11095878A JP 11095878 A JP11095878 A JP 11095878A JP S5538721 A JPS5538721 A JP S5538721A
Authority
JP
Japan
Prior art keywords
signal
gate
circuit
supplied
polarity
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.)
Granted
Application number
JP11095878A
Other languages
Japanese (ja)
Other versions
JPS5911221B2 (en
Inventor
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 JP11095878A priority Critical patent/JPS5911221B2/en
Publication of JPS5538721A publication Critical patent/JPS5538721A/en
Publication of JPS5911221B2 publication Critical patent/JPS5911221B2/en
Expired 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To prevent the misconnection troubles as well as to facilitate an easy connection by securing an automatic decision of the polarity of the signal line which transmits the signal row of the RZ long code system and thus receiving the correct signal at the terminal unit. CONSTITUTION:The signal which defines signal line l1+ and l2- each is supplied to one input of AND gate G1 as well as to the other input via charge/discharge circuit T1 and buffer BF1. In the same way, the signal defining signal line l1- and l2+ each is supplied to gate G2, and these outputs are supplied to OR gate G3 to be processed through logic circuit M. Circuit T1 is the serial circuit of the resistance diode and the RC parallel circuit. When the signal of signal line l1+ and l2- is correct, the correct signal output is obtained at the output of gate G1 with the output of gate G2 turned 0. If the signal features the opposite polarity, the state is also reversed. Thus the signals of either polarity are supplied to circuit M through gate G3, and as a result, the trouble caused by the misconnection through construction can be avoided.
JP11095878A 1978-09-08 1978-09-08 Transmission signal polarity determination method Expired JPS5911221B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11095878A JPS5911221B2 (en) 1978-09-08 1978-09-08 Transmission signal polarity determination method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11095878A JPS5911221B2 (en) 1978-09-08 1978-09-08 Transmission signal polarity determination method

Publications (2)

Publication Number Publication Date
JPS5538721A true JPS5538721A (en) 1980-03-18
JPS5911221B2 JPS5911221B2 (en) 1984-03-14

Family

ID=14548828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11095878A Expired JPS5911221B2 (en) 1978-09-08 1978-09-08 Transmission signal polarity determination method

Country Status (1)

Country Link
JP (1) JPS5911221B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5400017A (en) * 1991-12-20 1995-03-21 Daikin Industries, Ltd. Transmission apparatus
JP2017130896A (en) * 2016-01-22 2017-07-27 三菱電機株式会社 Control device and control system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187823U (en) * 1984-05-24 1985-12-12 松下精工株式会社 Ceiling-mounted air conditioner/heater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5400017A (en) * 1991-12-20 1995-03-21 Daikin Industries, Ltd. Transmission apparatus
JP2017130896A (en) * 2016-01-22 2017-07-27 三菱電機株式会社 Control device and control system

Also Published As

Publication number Publication date
JPS5911221B2 (en) 1984-03-14

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