JPS56158559A - Information transmitting system - Google Patents

Information transmitting system

Info

Publication number
JPS56158559A
JPS56158559A JP6128380A JP6128380A JPS56158559A JP S56158559 A JPS56158559 A JP S56158559A JP 6128380 A JP6128380 A JP 6128380A JP 6128380 A JP6128380 A JP 6128380A JP S56158559 A JPS56158559 A JP S56158559A
Authority
JP
Japan
Prior art keywords
bit
original signal
information transmitting
transmitting system
logic
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
JP6128380A
Other languages
Japanese (ja)
Inventor
Takashi Toge
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 JP6128380A priority Critical patent/JPS56158559A/en
Publication of JPS56158559A publication Critical patent/JPS56158559A/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
    • H04L25/4906—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 binary codes
    • H04L25/4908—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 binary codes using mBnB codes
    • H04L25/491—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 binary codes using mBnB codes using 1B2B codes

Abstract

PURPOSE:To prevent the extension of band width, by the output of 2-bit 10 or 01 at logic 1 and 2-bit 11 or 00 at logic 0, in the system transmitting the original signal 1-bit according to 2-bit signal. CONSTITUTION:When an original signal 1 is incoming, 2-bit 10, 01 is produced alternately and 2-bit is either 01 or 00 with the original signal at 0, then 2-bit 11 is made to correspond, and when 2-bit is either 10 or 11 with the original signal 0, 2-bit 00 is made to correspond. In such a code to be used, no DC component is present, the bit conversion point is reduced, the regularity of code is present, and the power spectrum is not almost spread in comparison with the original signal.
JP6128380A 1980-05-09 1980-05-09 Information transmitting system Pending JPS56158559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6128380A JPS56158559A (en) 1980-05-09 1980-05-09 Information transmitting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6128380A JPS56158559A (en) 1980-05-09 1980-05-09 Information transmitting system

Publications (1)

Publication Number Publication Date
JPS56158559A true JPS56158559A (en) 1981-12-07

Family

ID=13166714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6128380A Pending JPS56158559A (en) 1980-05-09 1980-05-09 Information transmitting system

Country Status (1)

Country Link
JP (1) JPS56158559A (en)

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