JPS59131241A - Transmission system of carrier detection data - Google Patents

Transmission system of carrier detection data

Info

Publication number
JPS59131241A
JPS59131241A JP562983A JP562983A JPS59131241A JP S59131241 A JPS59131241 A JP S59131241A JP 562983 A JP562983 A JP 562983A JP 562983 A JP562983 A JP 562983A JP S59131241 A JPS59131241 A JP S59131241A
Authority
JP
Japan
Prior art keywords
terminal
transmission
signal
answer signal
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
JP562983A
Other languages
Japanese (ja)
Inventor
Akio Sabato
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP562983A priority Critical patent/JPS59131241A/en
Publication of JPS59131241A publication Critical patent/JPS59131241A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]

Abstract

PURPOSE:To prevent an interruption of data transmission due to an intervention of another terminal during the communication between terminals, by transmitting continuously a dummy pattern after a transmission signal until a fixed interval of time elapses after the transmission signal is transmitted through a transmission terminal and then an answer signal arrives. CONSTITUTION:A terminal 12 gives a call and sends a transmission packet 21 to a terminal 13, and the packet 21 is detected for the answer signal of the terminal 13. During this period, a dummy pattern 24 is continuously transmitted. The terminal 13 also transmits the pattern 24 until the transmitted answer signal is detected. Thus a communication signal always exists on a transmission line during a session since the transmission of dummy pattern is discontinued after the answer signal is confirmed. This avoids an interruption of data transmission owing to an intervention of another terminal.
JP562983A 1983-01-14 1983-01-14 Transmission system of carrier detection data Pending JPS59131241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP562983A JPS59131241A (en) 1983-01-14 1983-01-14 Transmission system of carrier detection data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP562983A JPS59131241A (en) 1983-01-14 1983-01-14 Transmission system of carrier detection data

Publications (1)

Publication Number Publication Date
JPS59131241A true JPS59131241A (en) 1984-07-28

Family

ID=11616442

Family Applications (1)

Application Number Title Priority Date Filing Date
JP562983A Pending JPS59131241A (en) 1983-01-14 1983-01-14 Transmission system of carrier detection data

Country Status (1)

Country Link
JP (1) JPS59131241A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60199254A (en) * 1984-03-24 1985-10-08 Nippon Telegr & Teleph Corp <Ntt> Information communication system
JPS61269441A (en) * 1985-05-24 1986-11-28 Casio Comput Co Ltd Data transmission system
JPS62209939A (en) * 1986-03-10 1987-09-16 Casio Comput Co Ltd Data transfer system
US5114083A (en) * 1988-06-10 1992-05-19 Kubota, Ltd. Method and appatatus for pulverizing material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60199254A (en) * 1984-03-24 1985-10-08 Nippon Telegr & Teleph Corp <Ntt> Information communication system
JPS61269441A (en) * 1985-05-24 1986-11-28 Casio Comput Co Ltd Data transmission system
JPS62209939A (en) * 1986-03-10 1987-09-16 Casio Comput Co Ltd Data transfer system
JPH06101731B2 (en) * 1986-03-10 1994-12-12 カシオ計算機株式会社 Data transfer system
US5114083A (en) * 1988-06-10 1992-05-19 Kubota, Ltd. Method and appatatus for pulverizing material

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