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JPS55154851A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
JPS55154851A
JPS55154851A JP6143279A JP6143279A JPS55154851A JP S55154851 A JPS55154851 A JP S55154851A JP 6143279 A JP6143279 A JP 6143279A JP 6143279 A JP6143279 A JP 6143279A JP S55154851 A JPS55154851 A JP S55154851A
Authority
JP
Japan
Prior art keywords
command
fetched
transmission
transmission command
address
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
JP6143279A
Other languages
Japanese (ja)
Inventor
Masahide Nomura
Yoshio Sato
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 JP6143279A priority Critical patent/JPS55154851A/en
Publication of JPS55154851A publication Critical patent/JPS55154851A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G06F13/362—Handling requests for interconnection or transfer for access to common bus or bus system with centralised access control

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Control By Computers (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To make it efficient to interchange information among micro computers by making a check on whether received data should be fetched according to data group names given every transmitted data. CONSTITUTION:Among microcomputers 100, one computer 100(0) is used as a bus controller and to serial transmission bus 200 from controller 100(0), a synchronizing signal, transmission command and reception address are sent out. The remaining computers 100(1)-(N) fetch the transmission command. Computers 100(1)-(N) having fetched the transmission command checks whether the transmission command is a sending command or receiving command. When the transmission command is the sending command, the reception address is fetched and when the reception address agrees with the address that each of them has, transmission processing is carried out. When the transmission command is the receiving command, the data group name is fetched and compared to a group name remembered previously to determine whether the transmitted data are fetched. In fetching, they are stored from the initial address.
JP6143279A 1979-05-21 1979-05-21 Data transmission system Pending JPS55154851A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6143279A JPS55154851A (en) 1979-05-21 1979-05-21 Data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6143279A JPS55154851A (en) 1979-05-21 1979-05-21 Data transmission system

Publications (1)

Publication Number Publication Date
JPS55154851A true JPS55154851A (en) 1980-12-02

Family

ID=13170893

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6143279A Pending JPS55154851A (en) 1979-05-21 1979-05-21 Data transmission system

Country Status (1)

Country Link
JP (1) JPS55154851A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869408A (en) * 1981-10-21 1983-04-25 Toyota Motor Corp Centralized control system for vehicle
JPS5972505A (en) * 1982-09-21 1984-04-24 ゼロツクス・コ−ポレ−シヨン Control machine and system controller
JPS59183574A (en) * 1983-04-02 1984-10-18 Canon Inc Communication control system of picture information
JPS59194208A (en) * 1983-04-19 1984-11-05 Fuji Facom Corp Data transmission and reception system for distributed controller
JPS615645A (en) * 1984-06-20 1986-01-11 Toshiba Corp Data transmission method
JPS6121503A (en) * 1984-07-09 1986-01-30 Hitachi Ltd Controller of thermal power plant
JPS63170709A (en) * 1986-10-27 1988-07-14 ヴィッカーズ，インコーポレーテッド Electrically hydraulic type system
JPH01114903A (en) * 1987-10-28 1989-05-08 Nagano Keiki Seisakusho:Kk Instrumentation system
JPH03226046A (en) * 1990-01-30 1991-10-07 Nec Corp Monitoring device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869408A (en) * 1981-10-21 1983-04-25 Toyota Motor Corp Centralized control system for vehicle
JPS5972505A (en) * 1982-09-21 1984-04-24 ゼロツクス・コ−ポレ−シヨン Control machine and system controller
JPS59183574A (en) * 1983-04-02 1984-10-18 Canon Inc Communication control system of picture information
JPS59194208A (en) * 1983-04-19 1984-11-05 Fuji Facom Corp Data transmission and reception system for distributed controller
JPS615645A (en) * 1984-06-20 1986-01-11 Toshiba Corp Data transmission method
JPH0344465B2 (en) * 1984-06-20 1991-07-08 Tokyo Shibaura Electric Co
JPS6121503A (en) * 1984-07-09 1986-01-30 Hitachi Ltd Controller of thermal power plant
JPS63170709A (en) * 1986-10-27 1988-07-14 ヴィッカーズ，インコーポレーテッド Electrically hydraulic type system
JPH01114903A (en) * 1987-10-28 1989-05-08 Nagano Keiki Seisakusho:Kk Instrumentation system
JPH03226046A (en) * 1990-01-30 1991-10-07 Nec Corp Monitoring device

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