JPS5533318A - Communication system - Google Patents

Communication system

Info

Publication number
JPS5533318A
JPS5533318A JP10491778A JP10491778A JPS5533318A JP S5533318 A JPS5533318 A JP S5533318A JP 10491778 A JP10491778 A JP 10491778A JP 10491778 A JP10491778 A JP 10491778A JP S5533318 A JPS5533318 A JP S5533318A
Authority
JP
Japan
Prior art keywords
processor
packet
priority
information bit
transmission
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
JP10491778A
Other languages
Japanese (ja)
Other versions
JPS617063B2 (en
Inventor
Hisao Kuma
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 JP10491778A priority Critical patent/JPS5533318A/en
Publication of JPS5533318A publication Critical patent/JPS5533318A/en
Publication of JPS617063B2 publication Critical patent/JPS617063B2/ja
Granted 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
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Medical Treatment And Welfare Office Work (AREA)

Abstract

PURPOSE:To secure an effective application of the communication to the medical information system or the like by providing the priority information bit into the packet and thus preventing the increment of the transmission delay time even with mixture of the data featuring a large length. CONSTITUTION:Priority information bit P101 is added to packet 50 of the message. In the medical information network comprising computers 201-203 of hospitals A-C, node control processors NCPa-f and communication circuit 204, the transmission is carried out from processsor (a) to (b). In this case, P of the transmission packet is added to signal ENQ in order to inspect the buffer's idle state of processor (b), and processor (b) checks idle area information bit 304 of priority table PT301 after receiving P. And in case priority 303 of the idle area is equal to or lower than P, signal ACK is sent back to processor (a) for allotment of buffer 302. Receiving signal ACK, processor (a) transmits the packet to processor (b), and (b) sends EOT back to (a) at the end of reception. Thus the communication completes.
JP10491778A 1978-08-30 1978-08-30 Communication system Granted JPS5533318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10491778A JPS5533318A (en) 1978-08-30 1978-08-30 Communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10491778A JPS5533318A (en) 1978-08-30 1978-08-30 Communication system

Publications (2)

Publication Number Publication Date
JPS5533318A true JPS5533318A (en) 1980-03-08
JPS617063B2 JPS617063B2 (en) 1986-03-04

Family

ID=14393446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10491778A Granted JPS5533318A (en) 1978-08-30 1978-08-30 Communication system

Country Status (1)

Country Link
JP (1) JPS5533318A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0382244A (en) * 1989-08-25 1991-04-08 Nec Corp Inter-processor communication system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0429589Y2 (en) * 1987-05-21 1992-07-17
JPH0466678A (en) * 1990-07-05 1992-03-03 Toray Eng Co Ltd Method for removing liquid from platelike material with fine hole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0382244A (en) * 1989-08-25 1991-04-08 Nec Corp Inter-processor communication system

Also Published As

Publication number Publication date
JPS617063B2 (en) 1986-03-04

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