JPS5647147A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
JPS5647147A
JPS5647147A JP12442479A JP12442479A JPS5647147A JP S5647147 A JPS5647147 A JP S5647147A JP 12442479 A JP12442479 A JP 12442479A JP 12442479 A JP12442479 A JP 12442479A JP S5647147 A JPS5647147 A JP S5647147A
Authority
JP
Japan
Prior art keywords
terminal
transmission
data
data transmission
time
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
JP12442479A
Other languages
Japanese (ja)
Inventor
Haruka Nakamura
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP12442479A priority Critical patent/JPS5647147A/en
Publication of JPS5647147A publication Critical patent/JPS5647147A/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]
    • H04L12/40—Bus networks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
    • G06F13/368—Handling requests for interconnection or transfer for access to common bus or bus system with decentralised access control
    • G06F13/376—Handling requests for interconnection or transfer for access to common bus or bus system with decentralised access control using a contention resolving method, e.g. collision detection, collision avoidance

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To improve the efficiency of data transmission by shortening the time from start signal transmission to data transmission according to the priority of every terminal. CONSTITUTION:Terminal A, terminal B and center C consist of processors CPU1 and CPUs 1', control part 2 and control parts 2', transmission part 3 and transmission parts 3', reception part 4 and reception parts 4', and transmission line 5. In this case, time t1 of terminal A with higher priority is shorter than time t2 of terminal B. Therefore, since terminal A with higher priority starts transmitting data to center C via transmission line 5 in waiting time t2 of terminal B, terminal B receives data via the common line, i.e. transmission line 5 and then inhibited (masked) from sending data out. The data transmission from terminal B is enabled after the data transmission from terminal A ends. In the figure, (a) and a' are start signals, (b) and b' start bits, (c) and c' data, (d) and d' parity bits, and (e) and e' stop bits. Thus, two or more terminals never transfer data simultaneously, providing normal data transmission.
JP12442479A 1979-09-27 1979-09-27 Data transmission system Pending JPS5647147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12442479A JPS5647147A (en) 1979-09-27 1979-09-27 Data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12442479A JPS5647147A (en) 1979-09-27 1979-09-27 Data transmission system

Publications (1)

Publication Number Publication Date
JPS5647147A true JPS5647147A (en) 1981-04-28

Family

ID=14885132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12442479A Pending JPS5647147A (en) 1979-09-27 1979-09-27 Data transmission system

Country Status (1)

Country Link
JP (1) JPS5647147A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161061A (en) * 1982-03-19 1983-09-24 Hitachi Ltd Self-controlling method and device of distributed priority competition
JPS60248045A (en) * 1984-05-23 1985-12-07 Mitsubishi Electric Corp Optical data transmission equipment
US4840265A (en) * 1986-08-29 1989-06-20 Kabushiki Kaisha Maki Seisakusho Object distributing and supplying method and apparatus
US4860882A (en) * 1985-08-20 1989-08-29 Kabushiki Kaisha Maki Seisakusho Method and device for distributing and feeding
JPH01298080A (en) * 1988-05-25 1989-12-01 Nissei Plan:Kk Reinforced aerated concrete product
JPH01298082A (en) * 1988-05-25 1989-12-01 Nissei Plan:Kk Production of reinforced aerated concrete
JPH01298081A (en) * 1988-05-25 1989-12-01 Nissei Plan:Kk Strengthened gas concrete product
JPH01298083A (en) * 1988-05-25 1989-12-01 Nissei Plan:Kk Production of reinforced aerated concrete

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161061A (en) * 1982-03-19 1983-09-24 Hitachi Ltd Self-controlling method and device of distributed priority competition
JPH0325976B2 (en) * 1982-03-19 1991-04-09 Hitachi Ltd
JPS60248045A (en) * 1984-05-23 1985-12-07 Mitsubishi Electric Corp Optical data transmission equipment
US4860882A (en) * 1985-08-20 1989-08-29 Kabushiki Kaisha Maki Seisakusho Method and device for distributing and feeding
US4840265A (en) * 1986-08-29 1989-06-20 Kabushiki Kaisha Maki Seisakusho Object distributing and supplying method and apparatus
JPH01298080A (en) * 1988-05-25 1989-12-01 Nissei Plan:Kk Reinforced aerated concrete product
JPH01298082A (en) * 1988-05-25 1989-12-01 Nissei Plan:Kk Production of reinforced aerated concrete
JPH01298081A (en) * 1988-05-25 1989-12-01 Nissei Plan:Kk Strengthened gas concrete product
JPH01298083A (en) * 1988-05-25 1989-12-01 Nissei Plan:Kk Production of reinforced aerated concrete

Similar Documents

Publication Publication Date Title
JPS5647147A (en) Data transmission system
JPS55147851A (en) Communication controlling system
JPS5523561A (en) Micro computer system
JPS55138141A (en) Printer share mechanism
JPS5640345A (en) Data communication system
JPS57170648A (en) Data transfer system
JPS5595439A (en) Time-division photo signal transmission system
JPS559202A (en) Common control system by service processor
JPS5561836A (en) Data transfer system
JPS5647146A (en) Data transmission system
JPS53148937A (en) Data transfer system
JPS6468042A (en) Communication method
JPS5612154A (en) Answer signal transmission system
JPS56111931A (en) Data transfer device
JPS5537635A (en) Message transmitter
JPS57176860A (en) Poling response system
JPS5315723A (en) Priority selection circuit
JPS5361943A (en) Data transfer system
JPS5613856A (en) Signal transmitting system
JPS5493939A (en) Interruption control system
JPS5680723A (en) Control system of terminal controller
JPS55114059A (en) Multiple address communication system
JPS6486264A (en) Multiprocessor communication system
JPS57176862A (en) Data transmitting system
JPS6423360A (en) Message transfer device