Priority encoder for resolving priority contention

Details Priority encoder for resolving priority contention Priority encoder for resolving priority contention

1990-10-11

1992-11-03

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

3408255, 370 856, 3642426, 3642301, G06F 1318

Patent

active

051609231

ABSTRACT:
A priority encoder, for determining one of a plurality of channels requesting service simultaneously, includes a selecting circuit provided between a channel determining circuit and a channel memory. The determining circuit selects one of channels to be served in a fixed priority mode or rotating priority mode and generates a next channel signal. The channel memory supplies a stored channel signal, which indicates a previously served channel, to the determining circuit for determining the one of channels in the rotating priority mode. The selecting circuit selects the stored channel signal in the fixed rotating mode and the next channel signal in the rotating priority mode, and supplies it to the channel memory. Owing to this structure, the last channel obtaining the service in the previous rotating priority mode is held in the channel memory until the priority encoder becomes the rotating priority mode followed by a temporary fixed priority mode.

REFERENCES:
patent: 4760515 (1988-07-01), Malmquist et al.
patent: 4924380 (1990-05-01), McKinney et al.
patent: 5038346 (1991-08-01), Courtois

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