JPS561642A - Transmission error generating device - Google Patents

Transmission error generating device

Info

Publication number
JPS561642A
JPS561642A JP7659079A JP7659079A JPS561642A JP S561642 A JPS561642 A JP S561642A JP 7659079 A JP7659079 A JP 7659079A JP 7659079 A JP7659079 A JP 7659079A JP S561642 A JPS561642 A JP S561642A
Authority
JP
Japan
Prior art keywords
code
transmitted
modem10
designated
multiplexer
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
JP7659079A
Other languages
Japanese (ja)
Other versions
JPS622744B2 (en
Inventor
Toshiharu Ogasawara
Tadashi Tsutsui
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 JP7659079A priority Critical patent/JPS561642A/en
Publication of JPS561642A publication Critical patent/JPS561642A/en
Publication of JPS622744B2 publication Critical patent/JPS622744B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end

Abstract

PURPOSE:To secure the assured generation of the system checking error code, by securing an automatic conversion of the designated code in the data transmission system. CONSTITUTION:The code transmitted bit-serially from communication control unit 1 is supplied to MODEM10 through shift register 8 and multiplexer 9. And the received code from MODEM10 is transmitted to unit 1 through shift register 17 and multiplexer 18. In this case, the transmitted code receives parallel conversion at 2 to detec at 3 the code to be converted. At the same time, both the position and the number are detected at 4 and 5 for the designated code. When the coincidence is decided at 6 among detection result, the code designated previously is generated at 7 and then supplied to circuit 9 to be transmitted to MODEM10. On the other hand, the same code process is given also to the received code.
JP7659079A 1979-06-18 1979-06-18 Transmission error generating device Granted JPS561642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7659079A JPS561642A (en) 1979-06-18 1979-06-18 Transmission error generating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7659079A JPS561642A (en) 1979-06-18 1979-06-18 Transmission error generating device

Publications (2)

Publication Number Publication Date
JPS561642A true JPS561642A (en) 1981-01-09
JPS622744B2 JPS622744B2 (en) 1987-01-21

Family

ID=13609512

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7659079A Granted JPS561642A (en) 1979-06-18 1979-06-18 Transmission error generating device

Country Status (1)

Country Link
JP (1) JPS561642A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151750A (en) * 1982-03-05 1983-09-09 Hitachi Ltd Generator of circuit fault
JPS60258606A (en) * 1984-06-05 1985-12-20 Fanuc Ltd Automatic programming system
JPS6267952A (en) * 1985-09-19 1987-03-27 Hitachi Electronics Eng Co Ltd Communication circuit fault generating system
JPS6267941A (en) * 1985-09-19 1987-03-27 Hitachi Electronics Eng Co Ltd Communication line fault generating system
JPS6267951A (en) * 1985-09-19 1987-03-27 Hitachi Electronics Eng Co Ltd Communication circuit fault generating device
JPS6282836A (en) * 1985-10-08 1987-04-16 Nissan Motor Co Ltd Data transmission equipment
JPS63184803A (en) * 1987-01-28 1988-07-30 Okuma Mach Works Ltd Synchronous waiting system for machine tool having plural movable member

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151750A (en) * 1982-03-05 1983-09-09 Hitachi Ltd Generator of circuit fault
JPS60258606A (en) * 1984-06-05 1985-12-20 Fanuc Ltd Automatic programming system
JPS6267952A (en) * 1985-09-19 1987-03-27 Hitachi Electronics Eng Co Ltd Communication circuit fault generating system
JPS6267941A (en) * 1985-09-19 1987-03-27 Hitachi Electronics Eng Co Ltd Communication line fault generating system
JPS6267951A (en) * 1985-09-19 1987-03-27 Hitachi Electronics Eng Co Ltd Communication circuit fault generating device
JPS6282836A (en) * 1985-10-08 1987-04-16 Nissan Motor Co Ltd Data transmission equipment
JPS63184803A (en) * 1987-01-28 1988-07-30 Okuma Mach Works Ltd Synchronous waiting system for machine tool having plural movable member

Also Published As

Publication number Publication date
JPS622744B2 (en) 1987-01-21

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