Enhanced data converters using compression and decompression
First Claim
1. A method of transferring a sampled signal having been sampled at a sample rate between two devices using a data transfer interface, comprising:
- in a first device, compressing the sampled signal to form a compressed signal;
transmitting the compressed signal from the first device to a second device using the data transfer interface;
in the second device, receiving the compressed signal from the data transfer interface; and
decompressing the compressed signal to form a decompressed signal, wherein at least one of the compressed signal and the decompressed signal are formed at a rate at least as fast as the sample rate.
4 Assignments
0 Petitions
Accused Products
Abstract
An enhancement that reduces the digital interface rate of analog-to-digital (A/D) and digital-to-analog (D/A) converters through the use of compression and decompression is described. Improved A/D converters compressing a sampled version of an A/D converter'"'"'s analog input signal in real time, thereby significantly decreasing the required bit rate of the A/D converter'"'"'s digital interface. Similarly, improved D/A converters decrease the required bit rate of the D/A converter'"'"'s digital interface. D/A converters include a decompressor that decompresses the D/A converter'"'"'s compressed digital input in real time, prior to conversion to an analog output signal.
50 Citations
32 Claims
-
1. A method of transferring a sampled signal having been sampled at a sample rate between two devices using a data transfer interface, comprising:
-
in a first device, compressing the sampled signal to form a compressed signal; transmitting the compressed signal from the first device to a second device using the data transfer interface; in the second device, receiving the compressed signal from the data transfer interface; and decompressing the compressed signal to form a decompressed signal, wherein at least one of the compressed signal and the decompressed signal are formed at a rate at least as fast as the sample rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A system for transferring a sampled signal having a sample rate from a first device to a second device using a data transfer interface, comprising:
-
a compressor in the first device coupled to receive the sampled signal and coupled to the data transfer interface, said compressor compressing the sampled signal to form a compressed signal for transmission via the data transfer interface; and a decompressor in the second device coupled to receive the compressed signal from the data transfer interface and decompressing the compressed signal to form a decompressed signal, wherein at least one of the compressed signal and the decompressed signal are formed at a rate at least as fast as the sample rate. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
-
Specification