Patent ID: 8457421

Claim:
An imaging device, comprising: a plurality of compression circuits configured to receive first through K th initial imaging signals and to generate second through K th modified imaging signals, and a plurality of delay values; and a bit multiplexer configured to generate a compressed bit stream based on the first initial imaging signal, the second through K th modified imaging signals, and the plurality of delay values; a data line configured to pass the compressed bit stream; and a decompressor module configured to convert the compressed bit stream into first through K th recovered imaging signals corresponding to the first through K th initial imaging signals, wherein each compression circuit includes: a delay computer configured to determine a delay value by comparing two adjacent imaging signals selected from the first through K th initial imaging signals a delay circuit configured to delay a first of the two adjacent imaging signals by the delay value to generate a delayed imaging signal; a subtractor configured to subtract the delayed signal from a second of the two adjacent imaging signals to generate a reduced imaging signal; and a quantizer configured to perform a quantization function on the reduced imaging signal to generate a quantized imaging signal corresponding to the second of the two adjacent imaging signals, and wherein K is an integer greater than or equal to 2.