JPS6473839A - Method and device for access control - Google Patents

Method and device for access control

Info

Publication number
JPS6473839A
JPS6473839A JP23148487A JP23148487A JPS6473839A JP S6473839 A JPS6473839 A JP S6473839A JP 23148487 A JP23148487 A JP 23148487A JP 23148487 A JP23148487 A JP 23148487A JP S6473839 A JPS6473839 A JP S6473839A
Authority
JP
Japan
Prior art keywords
address
access
value
bias
bias value
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
JP23148487A
Other languages
Japanese (ja)
Other versions
JPH0624374B2 (en
Inventor
Hiroshi Shimizu
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
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 filed Critical NEC Corp
Priority to JP62231484A priority Critical patent/JPH0624374B2/en
Publication of JPS6473839A publication Critical patent/JPS6473839A/en
Publication of JPH0624374B2 publication Critical patent/JPH0624374B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To enable each terminal to make access to a communication network fairly and at high speed, by performing access control based on an access address value generated from a common address bias value and its own fixed address value, and changing the above stated address bias value. CONSTITUTION:An access control circuit 11 generates the access address from the address value 14 of the terminal and the bias value supplied in common from an address control circuit 54 by a control bus 52, and sends it to an address bus 53. A bus 51 informs the release of an access right to other terminals and an address bias circuit 54. The terminal acquiring the access right sends a signal representing the transfer of the access right, and the termi nal from which an access request is issued starts the contention control of the access right, and also, the address bias circuit 54 updates the bias value. Thus, it is possible to realize fair access by changing the common bias value.
JP62231484A 1987-09-14 1987-09-14 Access control method and apparatus Expired - Lifetime JPH0624374B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62231484A JPH0624374B2 (en) 1987-09-14 1987-09-14 Access control method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62231484A JPH0624374B2 (en) 1987-09-14 1987-09-14 Access control method and apparatus

Publications (2)

Publication Number Publication Date
JPS6473839A true JPS6473839A (en) 1989-03-20
JPH0624374B2 JPH0624374B2 (en) 1994-03-30

Family

ID=16924215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62231484A Expired - Lifetime JPH0624374B2 (en) 1987-09-14 1987-09-14 Access control method and apparatus

Country Status (1)

Country Link
JP (1) JPH0624374B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57152026A (en) * 1981-03-13 1982-09-20 Hitachi Ltd Method and apparatus for self-control of decentralized priority competition
JPS5979366A (en) * 1982-10-28 1984-05-08 Nec Corp Cpu board
JPS61147360A (en) * 1984-12-21 1986-07-05 Canon Inc Resource common use system
JPS6299842A (en) * 1985-10-25 1987-05-09 Casio Comput Co Ltd Access system for memory address

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57152026A (en) * 1981-03-13 1982-09-20 Hitachi Ltd Method and apparatus for self-control of decentralized priority competition
JPS5979366A (en) * 1982-10-28 1984-05-08 Nec Corp Cpu board
JPS61147360A (en) * 1984-12-21 1986-07-05 Canon Inc Resource common use system
JPS6299842A (en) * 1985-10-25 1987-05-09 Casio Comput Co Ltd Access system for memory address

Also Published As

Publication number Publication date
JPH0624374B2 (en) 1994-03-30

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