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US 2003/0200241 A1Published application
Digital filter
AssigneeIntegrated Device Technology, Inc.
InventorsJui Liang, Gonghai Ren
Life of this patent
Estimating the term…
Abstract
Methods and apparatus of signal processing are described. In a method according to one embodiment, a high-frequency region of a digital signal is detected. In response to the detecting, the high-frequency content of the digitized signal is increased in at least a portion of that region.
Claims9
A digital filter comprising:
- a local frequency state detector configured to indicate a predetermined local frequency state in a sequence of data values;
- a regional frequency state detector configured to detect a predetermined condition in a region of the sequence, based on a plurality of local frequency state indications, and to output a select signal based on the detection;
- a compensator configured to output a compensated value of a value of the sequence;
- and
- a selector configured to output one of the value and the compensated value, based on the select signal.
2 more elements
A method of signal processing, said method comprising:
- digitizing an analog signal having amplitude information;
- detecting in the digitized signal an amplitude transition having a magnitude at least equal to a predetermined threshold value;
- and
- in response to said detecting, increasing the magnitude of the amplitude transition with respect to other amplitude transitions in the digitized signal.
1 more element
A method of signal processing, said method comprising:
- digitizing an analog signal having amplitude information;
- detecting a high-frequency region of the digitized signal;
- and
- in response to said detecting, increasing a high-frequency content of the digitized signal in at least a portion of the high-frequency region.
1 more element
A method of signal processing, said method comprising:
- detecting the presence of a first particular frequency state at a plurality of locations of a sequence of digital values;
- based on said detecting at a plurality of locations, determining whether a condition exists with respect to a region of the sequence including the plurality of locations;
- producing a compensated value based on a value of the sequence;
- and
- according to said determining, selecting one among the compensated value and a value on which the compensated value is based.
2 more elements
Dependencies are inferred from the claim text.