JPS5613859A - Pm code reproducing device - Google Patents

Pm code reproducing device

Info

Publication number
JPS5613859A
JPS5613859A JP8971879A JP8971879A JPS5613859A JP S5613859 A JPS5613859 A JP S5613859A JP 8971879 A JP8971879 A JP 8971879A JP 8971879 A JP8971879 A JP 8971879A JP S5613859 A JPS5613859 A JP S5613859A
Authority
JP
Japan
Prior art keywords
signal
data
circuit
logic
turns
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
JP8971879A
Other languages
Japanese (ja)
Other versions
JPS6316935B2 (en
Inventor
Toshinori Mori
Kyoichi Iwasa
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP8971879A priority Critical patent/JPS5613859A/en
Publication of JPS5613859A publication Critical patent/JPS5613859A/en
Publication of JPS6316935B2 publication Critical patent/JPS6316935B2/ja
Granted 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

Abstract

PURPOSE:To shorten the processing time as well as simplify the circuit constitution, by reproducing the clock and the data from the received signal underwent the waveform shaping and by the combination of the logic gate and the delay line. CONSTITUTION:Input signal d of the PM code received the waveform shaping is supplied to changing point detecting circuit 21 consisting of inverter 13, delaying circuit 17 and Ex-Nor gate 18. And when the data given from circuit 21 changes, signal g which turns to logic 1 is obtained. When the data changed to 0 from 1 via data reproducing circuit 22 comprising AND gates 14 and 16 plus FF19 and by signal d, output signal e of inverter 13 and signal g each, signal h which turns to logic 1 is obtained along with signal i which turns to logic 1 when the data changes to 1 from 0. With these two signals, data k is obtained at terminal Q' of FF19. At the same time, Q terminal output signal j of FF19 and signal d are supplied to Ex-OR gate 23, and then clock l is obtained at output terminal 9.
JP8971879A 1979-07-13 1979-07-13 Pm code reproducing device Granted JPS5613859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8971879A JPS5613859A (en) 1979-07-13 1979-07-13 Pm code reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8971879A JPS5613859A (en) 1979-07-13 1979-07-13 Pm code reproducing device

Publications (2)

Publication Number Publication Date
JPS5613859A true JPS5613859A (en) 1981-02-10
JPS6316935B2 JPS6316935B2 (en) 1988-04-12

Family

ID=13978540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8971879A Granted JPS5613859A (en) 1979-07-13 1979-07-13 Pm code reproducing device

Country Status (1)

Country Link
JP (1) JPS5613859A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171244A (en) * 1982-08-19 1984-09-27 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレイシヨン 2-phase decoder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5081463A (en) * 1973-11-20 1975-07-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5081463A (en) * 1973-11-20 1975-07-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171244A (en) * 1982-08-19 1984-09-27 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレイシヨン 2-phase decoder

Also Published As

Publication number Publication date
JPS6316935B2 (en) 1988-04-12

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