Multiplex communications – Wide area network – Packet switching
Patent
1984-04-30
1986-04-29
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 94, 3408255, H04J 326
Patent
active
045861757
ABSTRACT:
Data transactions and voice communications are facilitated in a packet switching system including a group of ports each of which is capable of exchanging inter-destined and intra-destined information signals via a packet bus. The packet bus is operated under the direction of a bus controller which communicates with the ports to arbitrate access to the packet bus for packet transmission. Arbitrating access to the packet bus for pseudo-synchronous and asynchronous signal communications includes the steps of polling the ports within a period of time for high and low priority, transmission requirements. In response to each high priority requirement transmission over a predetermined number of consecutive bus cycles is granted by the bus controller within a predetermined period of time for pseudo-synchronous transmission of signals from each of the corresponding ports one after another. In response to each lower priority requirement, transmission over an indefinite number of consecutive bus cycles is granted by the bus controller for asynchronous transmission of signals from at least one of the corresponding ports. The preceding steps are repeated with a frequency such that high priority grants occur at a uniform rate that is consistent with a sampling rate of digitized voice communications being divided by one less than the predetermined number of consecutive bus cycles.
REFERENCES:
patent: 3985962 (1976-10-01), Jones et al.
patent: 4154983 (1979-05-01), Pedersen
patent: 4251880 (1981-02-01), Baugh et al.
patent: 4413337 (1983-11-01), Dauphin et al.
patent: 4446555 (1984-05-01), Devault et al.
patent: 4516239 (1985-05-01), Maxemchuk
Bedard Charles J.
Jain Prem C.
Wood Samuel F.
Northern Telecom Limited
Olms Douglas W.
LandOfFree
Method for operating a packet bus for transmission of asynchrono does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for operating a packet bus for transmission of asynchrono, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for operating a packet bus for transmission of asynchrono will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-145420