| Her Majesty the Queen in Right of Canada, as represented by the Minister of Industry, through Patent applications |
| Patent application number | Title | Published |
|---|
| 20090249165 | Event Cleanup Processing For Improving The Performance Of Sequence-Based Decoders - The invention relates to improving the performance of sequence-based soft-output decoders using event cleanup processing, wherein combinations of potential error events are evaluated using an error detection code (EDC) to select events that produce a modified set of decisions that has no EDC detectable errors. The event cleanup method and associated event cleanup decoder enable to significantly improve the error rate performance of sequence-based decoders and/or significantly improve decoding efficiency compared to other known error cleanup methods. | 10-01-2009 |
| 20080219466 | Low bit-rate universal audio coder - A biologically-inspired process for universal audio coding based on neural spikes is presented. The process is based on the generation of sparse two-dimensional time-frequency representations of audio signals, called spikegrams. The spikegrams are generated by projecting the audio signal onto a set of over-complete adaptive gamma-chirp kernels. A masking model is applied to the spikegrams to remove inaudible spikes and to increase the coding efficiency. In respect of one aspect of the invention, the masked spikegram is then quantized using a genetic-algorithm-based quantizer (or its simplified linear version). The values are then differentially coded using graph based optimization and entropy coded afterwards. | 09-11-2008 |
