JPS55162654A - Code conversion circuit - Google Patents

Code conversion circuit

Info

Publication number
JPS55162654A
JPS55162654A JP7138779A JP7138779A JPS55162654A JP S55162654 A JPS55162654 A JP S55162654A JP 7138779 A JP7138779 A JP 7138779A JP 7138779 A JP7138779 A JP 7138779A JP S55162654 A JPS55162654 A JP S55162654A
Authority
JP
Japan
Prior art keywords
code
waveforms
waveform
cmi
conversion
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
JP7138779A
Other languages
Japanese (ja)
Inventor
Yasuo Nagai
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 JP7138779A priority Critical patent/JPS55162654A/en
Publication of JPS55162654A publication Critical patent/JPS55162654A/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
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/22—Repeaters for converting two wires to four wires; Repeaters for converting single current to double current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To enable the conversion to ternary signal simply, by selecting the values 0 and 1 in the binary balance code through the simple means wherein e.g. the binary balance code as CMI(coded mark inversion) code is passed through the filter. CONSTITUTION:The waveform A shows the information represented by the binary balance code such as CMI code, and the pattern ''01'' corresponds to the value ''0'', and ''11'' or ''00'' to the value ''1''. The waveform A is input to the low pass filter circuit having the specified characteristics and the waveform B is obtained as the output. This output is separated into positive and negative polarities to be the waveforms C and E. The pattern ''01'' is almost rejected. The waveforms C and E are shaped based on the clock pulse D into the waveforms F and G. By synthesizing the waveforms F and G, the conversion to the ternary code such as alternative mark inversion (AMI) code is made.
JP7138779A 1979-06-07 1979-06-07 Code conversion circuit Pending JPS55162654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7138779A JPS55162654A (en) 1979-06-07 1979-06-07 Code conversion circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7138779A JPS55162654A (en) 1979-06-07 1979-06-07 Code conversion circuit

Publications (1)

Publication Number Publication Date
JPS55162654A true JPS55162654A (en) 1980-12-18

Family

ID=13459040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7138779A Pending JPS55162654A (en) 1979-06-07 1979-06-07 Code conversion circuit

Country Status (1)

Country Link
JP (1) JPS55162654A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01140811A (en) * 1987-11-27 1989-06-02 Nec Corp Cmi receiver
JPH02290182A (en) * 1989-04-27 1990-11-30 Matsushita Electric Ind Co Ltd Signal processor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01140811A (en) * 1987-11-27 1989-06-02 Nec Corp Cmi receiver
JPH02290182A (en) * 1989-04-27 1990-11-30 Matsushita Electric Ind Co Ltd Signal processor

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