Generating a full-resolution image from sub-sampled image signals
AssigneeIntel Corporation
InventorBenjamin M. Cahill, III
Life of this patent
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Abstract
Methods and apparatuses for generating an image for display without creating a scaled bitmap. One or more bytes of digital data corresponding to portions of the image are received, scaled horizontally and vertically for display, and transmitted for display. In a preferred embodiment, encoded data corresponding to the image are decoded before being scaled for display. In an alternative preferred embodiment, analog signals corresponding to the image are generated, decoded, digitized, captured, compressed, and decompressed. The data displayed may be either the captured data or the decompressed data.
Claims8
An apparatus for generating a full-resolution image from subsampled image signals, wherein each pixel of the full-resolution image has a plurality of components, comprising:
- (a) means for providing subsampled image signals comprising a plurality of full-sampled first-component signals and a plurality of subsampled second-component signals;
- (b) a shifter/truncater;
- (c) a shifter;
- (d) a comparator, electrically connected to receive a signal t from the shifter/truncater and a signal s from the shifter;
- (e) a multiplexer, electrically connected to receive the signal t from the shifter/truncater, the signal s from the shifter, and a signal c from the comparator, wherein:
- a first subset of the pixels of the full-resolution image correspond to locations beyond a plurality of last subsampled second-component signals in a first direction;
- the shifter/truncater generates the signal t by shifting a signal n right by i bits to generate a shifted signal and truncating the shifted signal to generate the signal t;
- the signal n corresponds to one less than the number of pixels of the full-resolution image in the first direction;
- the signal i is based on a subsampling ratio of the subsampled image signals;
- the shifter receives a signal d and generates a signal s by shifting the signal d right by i bits;
- the signal d corresponds to a current pixel location of the full-resolution image in the first direction;
- the comparator generates the signal c;
- the signal c identifies the smaller of the signals t and s;
- and
- the multiplexer generates and transmits a signal m based on the signal c;
- the signal m is the smaller of the signals t and s;
- and further comprising:
- (g) means for:
- receiving the subsampled image signals from means (a);
- receiving the signal m from the multiplexer;
- and
- generating the full-resolution image from the full-sampled first-component signals and the subsampled second-component signals based on the signal m.
Dependencies are inferred from the claim text.