Bus repeater

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G06F 1336, G06F 1340

Patent

active

046046895

ABSTRACT:
Method and apparatus for allowing multiple enclosures (10) to be connected so that their respective motherboards (15) together define a single bus. System-wide arbitration is carried out asynchronously on an enclosure basis while arbitration within each enclosure occurs synchronously. A bus repeater (20, 25, 25') is provided at each of the upstream and downstream ends of each enclosure's motherboard. The upstream bus repeater (20) in a given enclosure is coupled by a flexible connector cable (30) to the downstream bus repeater (25, 25') in the enclosure immediately upstream. One of the bus repeaters (say the upstream one) has the status as master or arbiter while the other has the status of a slave. The connector cables have two sets of lines (32, 35), thereby allowing the bus repeaters to pass two basic types of signals: (a) bused signals (address, data) which are made available to the relevant unit boards; and (b) private signals which are passed only to the bus repeaters. The set of private signals comprises two subsets (i) downstream bound, and (ii) upstream bound, each subset of which includes request, busy, grant, and arbitrate signals. Within each enclosure, the bus repeaters monitor the local bus request and bus busy lines, and logically combine them with the upstream bound and downstream bound private request and busy signals.

REFERENCES:
patent: 3886524 (1975-05-01), Appelt
patent: 4115854 (1978-09-01), Capowski et al.
patent: 4148011 (1979-04-01), McLagan
patent: 4257095 (1981-03-01), Nadir
patent: 4281381 (1981-07-01), Ahuja
patent: 4320457 (1982-03-01), Tanikawa
patent: 4356550 (1982-10-01), Katzman et al.
patent: 4365294 (1982-12-01), Stokken

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Bus repeater does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-972065

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.