JPS55147851A - Communication controlling system - Google Patents

Communication controlling system

Info

Publication number
JPS55147851A
JPS55147851A JP5576379A JP5576379A JPS55147851A JP S55147851 A JPS55147851 A JP S55147851A JP 5576379 A JP5576379 A JP 5576379A JP 5576379 A JP5576379 A JP 5576379A JP S55147851 A JPS55147851 A JP S55147851A
Authority
JP
Japan
Prior art keywords
transmission
transmission request
data
queuing part
serial interface
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
JP5576379A
Other languages
Japanese (ja)
Other versions
JPS624027B2 (en
Inventor
Masami Yuki
Manabu Sasamoto
Kunio Yamanaka
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 JP5576379A priority Critical patent/JPS55147851A/en
Publication of JPS55147851A publication Critical patent/JPS55147851A/en
Publication of JPS624027B2 publication Critical patent/JPS624027B2/ja
Granted 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
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
    • G06F13/22—Handling requests for interconnection or transfer for access to input/output bus using successive scanning, e.g. polling
    • G06F13/225—Handling requests for interconnection or transfer for access to input/output bus using successive scanning, e.g. polling with priority control

Landscapes

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

Abstract

PURPOSE:To provide transmission procedures of the contention system in the polling system, by accepting transmission requests from terminals by a transmission request queuing part. CONSTITUTION:Transmission request queuing part 36 extracts data to detect whether data is a transmission request or not by collation, and registers the line number. Communication control processor 39 takes in the line number from transmission request queuing part 36 and takes out data from the serial interface line for a selected terminal at a receiving time and adds the synchronizing signal and the check bit to data to transmit them to the serial interface line at a transmission time.
JP5576379A 1979-05-09 1979-05-09 Communication controlling system Granted JPS55147851A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5576379A JPS55147851A (en) 1979-05-09 1979-05-09 Communication controlling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5576379A JPS55147851A (en) 1979-05-09 1979-05-09 Communication controlling system

Publications (2)

Publication Number Publication Date
JPS55147851A true JPS55147851A (en) 1980-11-18
JPS624027B2 JPS624027B2 (en) 1987-01-28

Family

ID=13007879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5576379A Granted JPS55147851A (en) 1979-05-09 1979-05-09 Communication controlling system

Country Status (1)

Country Link
JP (1) JPS55147851A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63145550A (en) * 1986-12-08 1988-06-17 Nec Corp Processing system for file transfer
JPH01279338A (en) * 1988-04-30 1989-11-09 Nec Corp Stop system for file transfer processing
JP2008152729A (en) * 2006-12-20 2008-07-03 Denso Wave Inc Multi cradle for information processing terminal

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6433110U (en) * 1987-08-21 1989-03-01
JPH01124216U (en) * 1988-02-19 1989-08-24

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4945276A (en) * 1972-09-08 1974-04-30
JPS5011551A (en) * 1973-05-31 1975-02-06
JPS5333335A (en) * 1976-09-10 1978-03-29 Hitachi Ltd Indicator for enclosed switchboard

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4945276A (en) * 1972-09-08 1974-04-30
JPS5011551A (en) * 1973-05-31 1975-02-06
JPS5333335A (en) * 1976-09-10 1978-03-29 Hitachi Ltd Indicator for enclosed switchboard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63145550A (en) * 1986-12-08 1988-06-17 Nec Corp Processing system for file transfer
JPH01279338A (en) * 1988-04-30 1989-11-09 Nec Corp Stop system for file transfer processing
JP2008152729A (en) * 2006-12-20 2008-07-03 Denso Wave Inc Multi cradle for information processing terminal

Also Published As

Publication number Publication date
JPS624027B2 (en) 1987-01-28

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