JPS5518129A - Data transmission device - Google Patents

Data transmission device

Info

Publication number
JPS5518129A
JPS5518129A JP9067578A JP9067578A JPS5518129A JP S5518129 A JPS5518129 A JP S5518129A JP 9067578 A JP9067578 A JP 9067578A JP 9067578 A JP9067578 A JP 9067578A JP S5518129 A JPS5518129 A JP S5518129A
Authority
JP
Japan
Prior art keywords
transmission
data
time
flag
transmitted
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
JP9067578A
Other languages
Japanese (ja)
Inventor
Shuichi Nishikawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9067578A priority Critical patent/JPS5518129A/en
Publication of JPS5518129A publication Critical patent/JPS5518129A/en
Pending legal-status Critical Current

Links

Landscapes

  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE: To avoid dropout of one block due to the error caused to FLAG by carrying out the communication previously between the transmission side and the reception side for measurement of the transmission time and then utilizing the measured value of the transmission time.
CONSTITUTION: The specified signal is transmitted to the reception side prior to the data transmission at the transmission side, and the similar specified signal is then transmitted to the transmission side in return. Thus the data is transmitted at the transmission side, and the time from transmission of the specified signal to arrival of the data is measured at the transmission side to calculate the transmission delay time. In case some error takes place to data No. 1, the retransmission request signal is sent to the transmission side from the reception side, and the time is measured after transmission of the request signal to know previously the time when FLAG of data No. 1 arrives at the reception side. Thus, the error, if any, caused to FLAG of data No. 1. according to the retransmission request is decided.
COPYRIGHT: (C)1980,JPO&Japio
JP9067578A 1978-07-24 1978-07-24 Data transmission device Pending JPS5518129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9067578A JPS5518129A (en) 1978-07-24 1978-07-24 Data transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9067578A JPS5518129A (en) 1978-07-24 1978-07-24 Data transmission device

Publications (1)

Publication Number Publication Date
JPS5518129A true JPS5518129A (en) 1980-02-08

Family

ID=14005108

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9067578A Pending JPS5518129A (en) 1978-07-24 1978-07-24 Data transmission device

Country Status (1)

Country Link
JP (1) JPS5518129A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02150021U (en) * 1989-05-23 1990-12-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02150021U (en) * 1989-05-23 1990-12-25

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