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
Case for electronic device
Illumination apparatus
Clamp for fence panels
Methods of forming integrated circuit packages
Apparatus and method for sterilizing vessel with electron beam
Plants and seeds of corn variety CV335662
  Randomly Featured Patents
Treatment of afflictions, ailments and diseases
Resuscitation device
Liquid crystal display device
Key-accessed file organization
Mobile device with a flip-around keyboard
Counter-top vending machine
Adjustable muzzle stabilizer for repeating firearm
Method and system for collaring
Method of separating a predetermined fraction from petroleum oil using multistage evaporators
Solutions of carotenoids for use in foods and personal care products