Generating a full-resolution image from sub-sampled image signals

Claim 1

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.

Claim 2

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.