Priority encoding system

Details Priority encoding system Priority encoding system

1988-05-17

1990-05-08

Harkcom, Gary V.

Boots, shoes, and leggings

G06F 700

Patent

active

049244213

ABSTRACT:
Where the first bit position having a predetermined value; e.g., 1, as viewed from the most significant bit (MSB) or least significant bit (LSB) of the input data, 1 is subtracted from the input data to provide a subtraction result. This subtraction result and the input data are provided to the inputs of an exclusive OR gate is applied to a priority encoder capable of encoding the first bit position having a 1 as viewed from the MSB. The output represents the first bit position having a 1 as viewed from the LSB, thus requiring only a single priority encoder capable of detecting the first bit position having a 1 as viewed from the MSB.

REFERENCES:
patent: 4631696 (1986-12-01), Sakamoto
patent: 4773033 (1988-09-01), Ikumi
patent: 4789956 (1988-12-01), Hildebrandt
"Circuit to Determine Number of Leading Zeros in a Binary String", IBM Tech. Discl. Bull., vol. 28, #2, pp. 854-855, Jul. 1985.
Mitsubishi Semiconductors Bipolar Digital IC LSTTL Data Book, 1985, pp. 2-162 to 2-163.

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