Double unequal bus timeout

Details Double unequal bus timeout Double unequal bus timeout

1990-07-09

1994-04-05

Lee, Thomas C.

Boots, shoes, and leggings

3642314, 364240, 3642404, 364267, 3642679, 364DIG1, 3649354, 36493543, 364941, 3649415, 3649421, 364DIG2, 395550, G06F 13368

Patent

active

053013298

ABSTRACT:
A method and arrangement for preventing the locking out of devices which are coupled to a bus by either of two of the devices which have become initiator and target devices respectively. The devices arbitrate for control of the bus after the bus enters a bus free phase. The device which wins the arbitration becomes an initiator. A timer in each device on the bus is started upon the initiation of the arbitration. The initiator device is removed from the bus when an elasped time after the timers have been started reaches a pre-determined value. The distributed clock of the invention ensures that the devices coupled to the bus will clear the bus after the initiator has been on the bus for a pre-determined time, thereby obviating skew problems associated with single clocked systems.

REFERENCES:
patent: 4085448 (1978-04-01), Kogge
patent: 4117459 (1978-09-01), Douglas et al.
patent: 4363094 (1982-12-01), Kaul et al.
patent: 4365294 (1982-12-01), Stokken
patent: 4419724 (1983-12-01), Branigin et al.
patent: 4438494 (1984-03-01), Budde et al.
patent: 4454581 (1984-06-01), Nystrom
patent: 4481580 (1984-11-01), Martin et al.
patent: 4503535 (1985-03-01), Budde et al.
patent: 4521848 (1985-06-01), Bruce et al.
patent: 4562535 (1985-12-01), Vincent et al.
patent: 4620278 (1986-10-01), Ellsworth et al.
patent: 4633392 (1986-12-01), Vincent et al.
patent: 4719569 (1988-01-01), Ludemann et al.
patent: 4779089 (1988-10-01), Theus
patent: 4787032 (1988-11-01), Culley
patent: 4872004 (1989-10-01), Bahnick et al.
patent: 4967344 (1990-10-01), Scavezze et al.
patent: 4988990 (1991-01-01), Warrior
patent: 5029074 (1991-07-01), Maskas et al.
patent: 5138611 (1992-08-01), Carn et al.
patent: 5140680 (1992-08-01), Best
Electronik, vol. 32, No. 16, Aug. 1983, pp. 63-66.
Munich, DE; U. Mayer: "Schottky-Buastein Regelt Den Buszugriff" (and English translation).

Affiliated with

Also associated with

Rating

Double unequal bus timeout does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Double unequal bus timeout, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double unequal bus timeout will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-520156