Post-conversion system for an analog-to-digital converter which

Details Post-conversion system for an analog-to-digital converter which Post-conversion system for an analog-to-digital converter which

1998-07-01

2000-10-03

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

348619, H03M 120

Patent

active

061279560

ABSTRACT:
Post processing of the converted digital bits from an ADC to provide one or more additional bits of resolution. The additional bits of resolution will be accurate for data which is locally correlated, such as image data. For a particular digital sample, a curve (such as a straight line) is fitted through adjacent samples to determine an expected value for the current sample. The actual digital sample is compared to the expected value to determine whether it is within a threshold of the expected value. The value of an additional bit of resolution is set based upon whether the sample is within the threshold.

REFERENCES:
patent: 4127873 (1978-11-01), Katagi
patent: 4303943 (1981-12-01), May
patent: 4334237 (1982-06-01), Reitmeier et al.
patent: 4654634 (1987-03-01), Thong et al.
patent: 4733221 (1988-03-01), Ishii

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