Resources Contact Us Home
Enhanced time-interleaved A/D conversion using compression

Image Number 14 for United States Patent #7893852.

Compression of signal samples output from a parallel, time-interleaved analog to digital converter (TIADC) for a baseband signal, includes calculating first or higher order differences of consecutive signal samples followed by lossless or lossy encoding of the difference samples to produce compressed samples. Compression of a TIADC output signal with a nonzero center frequency, includes calculating sums or differences of pairs of signal samples separated by an appropriate number of sampling intervals followed by lossless or lossy encoding. The sums or differences of the signal samples have lower magnitudes than the original samples, allowing more efficient compression. Lossy compression alternatives produce compressed data with a fixed bit rate or with a fixed quality in the decompressed samples. Alternatives for lossy compression include attenuating the analog signal before sampling by the TIADC, applying bit shifters or multipliers after sampling to reduce the magnitudes of the signal samples, and lossy encoding.

  Recently Added Patents
Tool box
Toy vehicle housing
Silicon carbide substrate, epitaxial wafer and manufacturing method of silicon carbide substrate
RF power amplifier circuit with mismatch tolerance
Method and apparatus for modeling computer program behaviour for behavioural detection of malicious program
Electric rotating machine for vehicle
Data latch circuit and electronic device
  Randomly Featured Patents
Plane type strip-line filter in which strip line is shortened and dual mode resonator in which two types microwaves are independently resonated
Dynamic allocation of communication resources within a communication system
Methods and apparatus providing automatic client authentication
Explosive compositions
Signal synchronization using synchronization pattern extracted from signal
Holster retention system
Line figure encoder
Method for afforestation of sands and the like
Multiple antenna high isolation apparatus and application thereof