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

Image Number 5 for United States Patent #7796078.

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
Water slide
Method and system for automatically hiding irrelevant parts of hierarchical structures in computer user interfaces
Printed circuit board unit having routing unit mounted thereon and computer device having the same
Circuit arrangement and method for operating a circuit arrangement
Translation system adapted for query translation via a reranking framework
Browsing or searching user interfaces and other aspects
Load balancing in shortest-path-bridging networks
  Randomly Featured Patents
Hydraulic shock absorber of a dumping force adjustable type
Vehicle travel safety device
Gear train for four range hydromechanical steering transmission
Flash memory drive
Safety controller and input-output unit therefor
Hermetic vessel equipped with inserted-type discharge pipe, and oil separator, gas-liquid separator, and air conditioning system using the same
Direct type fuel cell power generator
Method of fabrication of semiconductor integrated circuit device
Blower including blades attached to a boss
Surface acoustic wave filter, duplexer and communications device with specific series resonator multiple anti-resonant point placement