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US 6,388,602 B1Granted
Bubble and meta-stability error immune gray-code encoder for high-speed A/D converters
AssigneeInternational Business Machines Corporation
InventorJungwook Yang
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Abstract
An encoding circuit for use with a comparator, includes a plurality of logic elements for receiving an input from a comparator, and a Gray code encoder for receiving an output from the plurality of logic elements. Both first and second type comparator errors (e.g., meta-stability errors and bubble-errors) are substantially eliminated simultaneously by the logic elements.
Claims20
An encoding circuit for use with a comparator, comprising:
- a plurality of logic elements for receiving an input from a comparator;
- and
- a Gray code encoder for receiving an output from said plurality of logic elements, wherein first and second type comparator errors in-said input from said comparator are substantially eliminated simultaneously by said logic elements.
An encoding circuit, comprising:
- a comparator;
- a plurality of logic elements for receiving an input from said comparator;
- and
- a Gray code encoder for receiving an output from said plurality of logic elements,
- wherein first and second type comparator errors in said input from said comparator are substantially eliminated simultaneously by said logic elements.
2 more elements
A bubble-error-correcting Gray code encoder, comprising:
- a plurality of first logic elements for receiving an input from a comparator and providing an output;
- and
- a plurality of second logic element s for receiving an output from said plurality of first logic elements,
- wherein both meta-stability errors and bubble-errors in said input from said comparator are eliminated simultaneously by said first logic elements.
1 more element
Dependencies are inferred from the claim text.