Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8032369 | Arbitrary average data rates for variable rate coders | Ananthapadmanabhan Aasanipalai Kandhadai | 2011-10-04 |
| 7982733 | Rendering 3D video images on a stereo-enabled display | Haohong Wang, Hsiang-Tsun Li, Yingyong Qi | 2011-07-19 |
| 7698132 | Sub-sampled excitation waveform codebooks | Ananthapadamanabhan A. Kandhadai, Khaled Helmi El-Maleh | 2010-04-13 |
| 7496505 | Variable rate speech coding | William R. Gardner | 2009-02-24 |
| 7426466 | Method and apparatus for quantizing pitch, amplitude, phase and linear spectrum of voiced speech | Arasanipalai K. Ananthapadmanabhan, Pengjun Huang, Eddie-Lun Tik Choy, Andrew P. DeJaco | 2008-09-16 |
| 7406096 | Tandem-free intersystem voice communication | Khaled Helmi El-Maleh, Ananthapadmanabhan Arasanipalai Kandhadai | 2008-07-29 |
| 7146310 | Low bit-rate coding of unvoiced segments of speech | Amitava Das | 2006-12-05 |
| 7136812 | Variable rate speech coding | William R. Gardner | 2006-11-14 |
| 7085712 | Method and apparatus for subsampling phase spectrum information | — | 2006-08-01 |
| 6820052 | Low bit-rate coding of unvoiced segments of speech | Amitava Das | 2004-11-16 |
| 6789059 | Reducing memory requirements of a codebook vector search | Ananthapadmanabhan Arasanipalai Kandhadai, Andrew P. DeJaco | 2004-09-07 |
| 6766289 | Fast code-vector searching | Ananthapadmanabhan Arasanipalai Kandhadai, Andrew P. DeJaco | 2004-07-20 |
| 6691084 | Multiple mode variable rate speech coding | William R. Gardner | 2004-02-10 |
| 6678649 | Method and apparatus for subsampling phase spectrum information | — | 2004-01-13 |
| 6584438 | Frame erasure compensation method in a variable rate speech coder | Pengjun Huang, Eddie-Lun Tik Choy | 2003-06-24 |
| 6463407 | Low bit-rate coding of unvoiced segments of speech | Amitava Das | 2002-10-08 |
| 6456964 | Encoding of periodic speech using prototype waveforms | William R. Gardner | 2002-09-24 |
| 6438518 | Method and apparatus for using coding scheme selection patterns in a predictive speech coder to reduce sensitivity to frame error conditions | Andrew P. DeJaco, Arasanipalai K. Ananthapadmanabhan, Eddie-Lun Tik Choy | 2002-08-20 |
| 6434519 | Method and apparatus for identifying frequency bands to compute linear phase shifts between frame prototypes in a speech coder | Andrew P. DeJaco, Arasanipalai K. Ananthapadmanabhan, Pengjun Huang, Eddie-Lun Tik Choy | 2002-08-13 |
| 6397175 | Method and apparatus for subsampling phase spectrum information | — | 2002-05-28 |
| 6393394 | Method and apparatus for interleaving line spectral information quantization methods in a speech coder | Arasanipalai K. Ananthapadmanabhan | 2002-05-21 |
| 6330532 | Method and apparatus for maintaining a target bit rate in a speech coder | Andrew P. DeJaco | 2001-12-11 |
| 6324503 | Method and apparatus for providing feedback from decoder to encoder to improve performance in a predictive speech coder under frame erasure conditions | Andrew P. DeJaco | 2001-11-27 |
| 6324505 | Amplitude quantization scheme for low-bit-rate speech coders | Eddie-Lun Tik Choy | 2001-11-27 |
| 6260017 | Multipulse interpolative coding of transition speech frames | Amitava Das | 2001-07-10 |