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JPS5558646A - Conversion system of phase division code to nrz code - Google Patents

Conversion system of phase division code to nrz code

Info

Publication number
JPS5558646A
JPS5558646A JP13160578A JP13160578A JPS5558646A JP S5558646 A JPS5558646 A JP S5558646A JP 13160578 A JP13160578 A JP 13160578A JP 13160578 A JP13160578 A JP 13160578A JP S5558646 A JPS5558646 A JP S5558646A
Authority
JP
Japan
Prior art keywords
signal
phase division
signals
output
code
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
JP13160578A
Other languages
Japanese (ja)
Inventor
Yukio Minami
Koichi Oota
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13160578A priority Critical patent/JPS5558646A/en
Publication of JPS5558646A publication Critical patent/JPS5558646A/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
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To make it possible to convert efficiently phase division signals to NRZ signals by processing phase division signals on a basis of clock signals obtained from the exclusive OR output of phase division signals and signals obtained by delaying them by 1/2 bit components. CONSTITUTION:One of clock signals d and e is selected on a basis of AND output 6 between the inversion output signal of exclusive OR output g, which is operated between phase division signal b and signal f obtained by delaying signal b by 1/2 bit components, and respective clock signals d and e. The output is outputted from OR gate 10 through integrator 7 to OR circuit 11 as an objective clock signal and is delayed by 1/2 bit, and after that, the phase division signal is discriminated and reproduced. As a result, the phase division signal can be converted to a NRZ signal efficiently.
JP13160578A 1978-10-27 1978-10-27 Conversion system of phase division code to nrz code Pending JPS5558646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13160578A JPS5558646A (en) 1978-10-27 1978-10-27 Conversion system of phase division code to nrz code

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13160578A JPS5558646A (en) 1978-10-27 1978-10-27 Conversion system of phase division code to nrz code

Publications (1)

Publication Number Publication Date
JPS5558646A true JPS5558646A (en) 1980-05-01

Family

ID=15061960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13160578A Pending JPS5558646A (en) 1978-10-27 1978-10-27 Conversion system of phase division code to nrz code

Country Status (1)

Country Link
JP (1) JPS5558646A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0273724A (en) * 1988-09-08 1990-03-13 Nec Corp Cmi decoding circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0273724A (en) * 1988-09-08 1990-03-13 Nec Corp Cmi decoding circuit

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