Resource granting process and device in a system comprising auto

Details Resource granting process and device in a system comprising auto Resource granting process and device in a system comprising auto

1982-03-29

1985-09-10

Thomas, James D.

Boots, shoes, and leggings

G06F 300

Patent

active

045410437

ABSTRACT:
A process and an apparatus for the granting of a resource in a system comprising at least two antonomous data processing units in which each unit can request the granting of the resource by means of an individual interface circuit. The interface circuits are coupled to a multiple conductor channel of the binary type which can assume first and second logic states. Each unit is also associated with a particular number and a priority level. For allocating the resource to one of the units, a sequence of three conditional control signals generated in autonomous manner by the individual interface circuits is used, namely a first signal, whose positioning in the second logic state indicates that at least one unit is requesting the granting of the resource, a second signal, whose positioning in the first logic state indicates that the resource has not been allocated to any of the units, and a third signal, whose transition from the first logic state to the second logic state simultaneously authorises the start of a competition between the requesting units, followed by the choice of only one of the said units for the granting of the resource, and inhibits the requests of other units. The reverse transition of the third signal after a predetermined period validates the chosen unit and leads to the display on the multiple conductor system of a binary word representing the number of the chosen unit, as well as allowing new requests for the resource.

REFERENCES:
patent: 3553656 (1971-01-01), Bernhardt
patent: 4177450 (1979-12-01), Sarrand
patent: 4209838 (1980-06-01), Alcorn, Jr. et al.
patent: 4257095 (1981-03-01), Nadir
patent: 4281381 (1981-07-01), Ahuja et al.
patent: 4320502 (1982-03-01), DeVeer
patent: 4373183 (1983-02-01), Means et al.
patent: 4375639 (1983-03-01), Johnson, Jr.
"One-Step Programmable Arbiters for Multiprocessors", Computer Design, vol. 17, No. 1, Apr. 1978, pp. 154-158.
IBM Tech. Discl. Bull., "Asynchronous Contention Resolution", C. F. Bantz et al., vol. 23, No. 7A, Dec. 1980, pp. 3043-3044.
IBM Tech. Discl. Bull., "Look-Ahead Access Request Circuit for Computer Systems", A. Blum, vol. 22, No. 3, Aug. 1979, pp. 1059-1060.

Affiliated with

Also associated with

Rating

Resource granting process and device in a system comprising auto does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Resource granting process and device in a system comprising auto, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resource granting process and device in a system comprising auto will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1431951