JPS5635558A - Bipolar/unipolar converting circuit - Google Patents

Bipolar/unipolar converting circuit

Info

Publication number
JPS5635558A
JPS5635558A JP11131779A JP11131779A JPS5635558A JP S5635558 A JPS5635558 A JP S5635558A JP 11131779 A JP11131779 A JP 11131779A JP 11131779 A JP11131779 A JP 11131779A JP S5635558 A JPS5635558 A JP S5635558A
Authority
JP
Japan
Prior art keywords
signal
pulse
rise
unipolar
frequency
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
JP11131779A
Other languages
Japanese (ja)
Inventor
Toshio Ikeda
Yuzo Fujii
Kenichi Hashimoto
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 JP11131779A priority Critical patent/JPS5635558A/en
Publication of JPS5635558A publication Critical patent/JPS5635558A/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 keep the pulse duration occupying ratio at 50% for the basic clock, by giving a shaping to the RZ uipolar signal, detecting the rise of the shaped signal to generate the pulse and then using pulse for the initial setting pulse to obtain the basic clock signal. CONSTITUTION:The vipolar signal is supplied to the bipolar/unipolar converting circuit 11 to converted into the RZ unipolar signal. And both the rise and the fall of the RZ unipolar signal are detected through the changing point detecting circuit 12. And the sine wave of the frequency f0 is extracted by the tuning circuit 13 of the bit rate 2f0. This sine wave is applied to the logic level converting circuit 14 to obtain the clock signal of the frequency 2f0. Then a shaping is given to the RZ unipolar signal through the flip-flop 15 and by the clock signal of the frequency 2f0, and the rise is detected by the rise detecting circuit to generate the pulse. And this rise detection pulse is used for the initial setting pulse via the flip-flop 16, and the said clock, signal is divided to obtain the basic clock signal.
JP11131779A 1979-08-31 1979-08-31 Bipolar/unipolar converting circuit Pending JPS5635558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11131779A JPS5635558A (en) 1979-08-31 1979-08-31 Bipolar/unipolar converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11131779A JPS5635558A (en) 1979-08-31 1979-08-31 Bipolar/unipolar converting circuit

Publications (1)

Publication Number Publication Date
JPS5635558A true JPS5635558A (en) 1981-04-08

Family

ID=14558147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11131779A Pending JPS5635558A (en) 1979-08-31 1979-08-31 Bipolar/unipolar converting circuit

Country Status (1)

Country Link
JP (1) JPS5635558A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58138684A (en) * 1982-02-13 1983-08-17 Fuji Kagakushi Kogyo Co Ltd Recording medium for color heat transfer
JPS6447548A (en) * 1987-08-18 1989-02-22 Ricoh Tokuki Kk Image forming device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58138684A (en) * 1982-02-13 1983-08-17 Fuji Kagakushi Kogyo Co Ltd Recording medium for color heat transfer
JPS6365029B2 (en) * 1982-02-13 1988-12-14
JPS6447548A (en) * 1987-08-18 1989-02-22 Ricoh Tokuki Kk Image forming device

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