Issued Patents All Time
Showing 51–67 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7058571 | Audio decoding apparatus and method for band expansion with aliasing suppression | Mineo Tsushima, Naoya Tanaka, Kok Seng Chong, Kim Hann Kuah, Sua Hong Neo +4 more | 2006-06-06 |
| 6999828 | Parallel signal processing device for a portable audio system | Shuji Miyasaka, Mineo Tsushima, Tomokazu Ishikawa, Yoshiaki Sawada | 2006-02-14 |
| 6922667 | Encoding apparatus and decoding apparatus | Mineo Tsushima | 2005-07-26 |
| 6917712 | Encoding apparatus and decoding apparatus | Mineo Tsushima, Shuji Miyasaka, Tomokazu Ishikawa, Yoshiaki Sawada | 2005-07-12 |
| 6904404 | Multistage inverse quantization having the plurality of frequency bands | Shuji Miyasaka, Yoshihisa Nakatoh, Mineo Tsushima, Tomokazu Ishikawa | 2005-06-07 |
| 6898615 | Signal processing unit and signal processing method including using an exponent part and a mantissa part for power generation | Shuji Miyasaka, Mineo Tsushima, Tomokazu Ishikawa, Yoshiaki Sawada | 2005-05-24 |
| 6871106 | Audio signal coding apparatus, audio signal decoding apparatus, and audio signal coding and decoding apparatus | Tomokazu Ishikawa, Mineo Tsushima | 2005-03-22 |
| 6826526 | AUDIO SIGNAL CODING METHOD, DECODING METHOD, AUDIO SIGNAL CODING APPARATUS, AND DECODING APPARATUS WHERE FIRST VECTOR QUANTIZATION IS PERFORMED ON A SIGNAL AND SECOND VECTOR QUANTIZATION IS PERFORMED ON AN ERROR COMPONENT RESULTING FROM THE FIRST VECTOR QUANTIZATION | Shuji Miyasaka, Yoshihisa Nakato, Mineo Tsushima, Tomokazu Ishikawa | 2004-11-30 |
| 6678653 | Apparatus and method for coding audio data at high speed using precision information | Mineo Tsushima, Shuji Miyasaka | 2004-01-13 |
| 6484142 | Encoder using Huffman codes | Shuji Miyasaka, Mineo Tsushima, 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, Mineo Tsushima, 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, Mineo Tsushima, 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 | Mineo Tsushima, Yoshihisa Nakatoh | 1999-11-02 |
| 5617478 | Sound reproduction system and a sound reproduction method | Ryou Tagami, Masaharu Matsumoto, Mikio Oda, Mitsuhiko Serikawa, Akihisa Kawamura +1 more | 1997-04-01 |
| 5611019 | Method and an apparatus for speech detection for determining whether an input signal is speech or nonspeech | Yoshihisa Nakatoh | 1997-03-11 |
| 5493647 | Digital signal recording apparatus and a digital signal reproducing apparatus | Syuji Miyasaka, Kazue Kita, Michio Matsumoto, Tsuneo Tanaka, Masayuki Misaki +1 more | 1996-02-20 |
| 5381482 | Sound field controller | Masaharu Matsumoto, Mitsuhiko Serikawa, Akihisa Kawamura, Hiroko Numazu, Ryo Tagami +1 more | 1995-01-10 |