Microcode-initiated high speed comparator

Details Microcode-initiated high speed comparator Microcode-initiated high speed comparator

2005-06-30

2008-12-23

Wells, Kenneth B (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S064000

Reexamination Certificate

active

07468618

ABSTRACT:
A microcode-initiated high speed comparator in an optical transceiver includes an initialization and control section consisting of various register sets, an analog section with comparator hardware, and an output retrieval section. The comparator hardware performs comparison on a wide-range of selectable input values, thereby avoiding the need for a dedicated comparator for each input value. The register sets are initialized by microcode with various comparison values, allowing multiplexed comparison to be much faster than it would be if the processor was controlling in real-time the multiplexed comparison. The comparison values may correspond to optimal operational parameters of the optical transceiver or may correspond to other desired comparison values. The analog section is driven by the registers and makes a comparison between the predetermined values and actual operational parameter values.

REFERENCES:
patent: 4214213 (1980-07-01), Ferrie
patent: 5295132 (1994-03-01), Hashimoto et al.
patent: 6469547 (2002-10-01), Rabii
patent: 2004/0022537 (2004-02-01), Mecherle et al.

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