Loading patent…
AssigneeNorth American Philips Corporation
InventorsFaramarz Azadegan, Eberhard H. Fisch, Alan P. Cavallerano, Mikhail Tsinberg
Estimating the term…
A method and apparatus for digital encoding are described for compressing the augmentation channel signals (chrominance and luminance signals for panel information and high frequency luminance and line difference signal) so that this information can be transmitted in a 3 MHz wide RF channel using a digital transmission scheme such as QPSK. Analog signal components are sampled and converted to digital signals. Each of the signals is fed into a separate coder which reduces the number of bits/pixel required to reconstruct the original signal. Compression is achieved by quantization and removal of redundancy. The compression scheme is based on the use of DCT together with VLC. Each augmentation signal has its own coder, which is adapted to the unique statistics of this signal.
An apparatus for decoding a video signal, said video signal comprising a plurality of coded components encoded thereon by deriving a plurality of signal components from a video source signal comprising a plurality of frames which are partitioned into a plurality of separate blocks and processed on a block by block basis so as to determined the activity of each block, digitizing each of said signal components, coding each of said digitized signal components in a manner optimized for each respective component, and modulating said coded components to form said video signal, said apparatus comprising:
An apparatus for encoding a video source signal comprising a plurality of frames, said apparatus comprising:
Dependencies are inferred from the claim text.