JPS5685958A - Binary code transmission system - Google Patents

Binary code transmission system

Info

Publication number
JPS5685958A
JPS5685958A JP15340379A JP15340379A JPS5685958A JP S5685958 A JPS5685958 A JP S5685958A JP 15340379 A JP15340379 A JP 15340379A JP 15340379 A JP15340379 A JP 15340379A JP S5685958 A JPS5685958 A JP S5685958A
Authority
JP
Japan
Prior art keywords
asynchronous data
pulse
reverse polarity
refresh pulse
receiving side
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
JP15340379A
Other languages
Japanese (ja)
Other versions
JPS6313580B2 (en
Inventor
Kazuo Murano
Kazuo Yamaguchi
Norio Murakami
Toshitaka Tsuda
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 JP15340379A priority Critical patent/JPS5685958A/en
Priority to CA000365338A priority patent/CA1159129A/en
Priority to US06/210,850 priority patent/US4347617A/en
Priority to GB8037943A priority patent/GB2064922B/en
Publication of JPS5685958A publication Critical patent/JPS5685958A/en
Publication of JPS6313580B2 publication Critical patent/JPS6313580B2/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
    • H04L25/4906—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

Abstract

PURPOSE:To easily monitor the line by the receiving side as to whether there is a fault or not, by inserting a pulse of narrow width by the reverse polarity when the same code of an asynchronous data has continued exceeding the prescribed length, in the system for transmitting a binary asynchronous data. CONSTITUTION:When the same code of an asynchronous data (a) provided to the input terminal 1 of the transmission side has continued exceeding T1, a refresh pulse of pulse width T0 which is narrower than the minimum width T of the asynchronous data is inserted by the reverse polarity. The receiving side executes decoding by disregarding the refresh pulse having relation of T>>T0, and makes it a regenerated receiving code (c). At the normal time, the refresh pulse of the reverse polarity is inserted at every T1 of the same code, and therefore, it becomes easy to monitor the line by the receiving side as to whether it is a fault or not. Moreover, since not only the transmission becomes easy due to decrease of the DC component but also the refresh pulse is inserted even if the original code continues ''0'', the AGC can be operated by detecting the level.
JP15340379A 1979-11-27 1979-11-27 Binary code transmission system Granted JPS5685958A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP15340379A JPS5685958A (en) 1979-11-27 1979-11-27 Binary code transmission system
CA000365338A CA1159129A (en) 1979-11-27 1980-11-24 Asynchronous transmission system for binary-coded information
US06/210,850 US4347617A (en) 1979-11-27 1980-11-26 Asynchronous transmission system for binary-coded information
GB8037943A GB2064922B (en) 1979-11-27 1980-11-26 Asynchronous transmission system for binary-coded information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15340379A JPS5685958A (en) 1979-11-27 1979-11-27 Binary code transmission system

Publications (2)

Publication Number Publication Date
JPS5685958A true JPS5685958A (en) 1981-07-13
JPS6313580B2 JPS6313580B2 (en) 1988-03-26

Family

ID=15561720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15340379A Granted JPS5685958A (en) 1979-11-27 1979-11-27 Binary code transmission system

Country Status (1)

Country Link
JP (1) JPS5685958A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56131237U (en) * 1980-03-07 1981-10-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56131237U (en) * 1980-03-07 1981-10-05

Also Published As

Publication number Publication date
JPS6313580B2 (en) 1988-03-26

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