Bit-serial digital compressor

Details Bit-serial digital compressor Bit-serial digital compressor

1996-05-31

1998-06-23

Moise, Emmanuel L.

Boots, shoes, and leggings

364724011, 36473601, 364761, 364766, 377 51, G06F 700, G06F 1500, G06F 752, G06M 300

Patent

active

057711828

ABSTRACT:
A bit-serial compressor (106) has a pre-divider circuit (208) receiving input serial data and generating a partial numerator. Divider circuit (210) divides the partial numerator by a denominator and generates a partial remainder that is fed back to the pre-divider circuit (208). Divider circuit (210) also generates serial data that is sent to an absolute value circuit (216) and then to a bit-serial filter (218). Bit-serial filter (218) generates an average signal from the serial data. A comparator circuit (224) compares the average signal to a threshold signal and generates the greater of the average signal or the threshold signal for use as a denominator in a next division cycle. The divider circuit includes an overflow control circuit (618) which detects overflow from the carryout bit of the partial remainder operation at the beginning of a division cycle and the sign bit of the numerator. If overflow is detected, the output is clipped according to whether the numerator is positive or negative.

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