Issued Patents All Time
Showing 51–55 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6678653 | Apparatus and method for coding audio data at high speed using precision information | Takeshi Norimatsu, Shuji Miyasaka | 2004-01-13 |
| 6484142 | Encoder using Huffman codes | Shuji Miyasaka, Takeshi Norimatsu, Tomokazu Ishikawa, Yoshiaki Sawada | 2002-11-19 |
| 6477490 | Audio signal compression method, audio signal compression apparatus, speech signal compression method, speech signal compression apparatus, speech recognition method, and speech recognition apparatus | Yoshihisa Nakatoh, Takeshi Norimatsu, Tomokazu Ishikawa, Mitsuhiko Serikawa, Taro Katayama +2 more | 2002-11-05 |
| 6311153 | Speech recognition method and apparatus using frequency warping of linear prediction coefficients | Yoshihisa Nakatoh, Takeshi Norimatsu, Tomokazu Ishikawa, Mitsuhiko Serikawa, Taro Katayama +2 more | 2001-10-30 |
| 5978759 | Apparatus for expanding narrowband speech to wideband speech by codebook correspondence of linear mapping functions | Yoshihisa Nakatoh, Takeshi Norimatsu | 1999-11-02 |