Issued Patents All Time
Showing 151–175 of 218 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D460448 | Portable terminal | — | 2002-07-16 |
| 6353808 | Apparatus and method for encoding a signal as well as apparatus and method for decoding a signal | Masayuki Nishiguchi, Kenichi Makino | 2002-03-05 |
| 6295437 | Apparatus and method for forming an image using a developing device capable of obtaining a high quality image | Takashi Hodoshima, Katsuhiro Aoki | 2001-09-25 |
| 6243672 | Speech encoding/decoding method and apparatus using a pitch reliability measure | Kazuyuki Iijima, Masayuki Nishiguchi | 2001-06-05 |
| 6108621 | Speech analysis method and speech encoding method and apparatus | Masayuki Nishiguchi, Kazuyuki Iijima, Akira Inoue | 2000-08-22 |
| 6094728 | Independent error detection method/apparatus for a disk controller, and a disk controller device | Masatoshi Ichikawa, Soichi Isono, Kiyoshi Honda | 2000-07-25 |
| 6057089 | Silver halide photographic light-sensitive material | Takanori Hioki, Tetsuo Nakamura | 2000-05-02 |
| 6047253 | Method and apparatus for encoding/decoding voiced speech based on pitch intensity of input speech signal | Masayuki Nishiguchi, Kazuyuki Iijima | 2000-04-04 |
| 6034632 | Signal coding method and apparatus | Masayuki Nishiguchi | 2000-03-07 |
| 6029134 | Method and apparatus for synthesizing speech | Masayuki Nishiguchi | 2000-02-22 |
| 6023671 | Voiced/unvoiced decision using a plurality of sigmoid-transformed parameters for speech coding | Kazuyuki Iijima, Masayuki Nishiguchi, Shiro Omori | 2000-02-08 |
| 6018707 | Vector quantization method, speech encoding method and apparatus | Masayuki Nishiguchi, Kazuyuki Iijima | 2000-01-25 |
| 6012023 | Pitch detection method and apparatus uses voiced/unvoiced decision in a frame other than the current frame of a speech signal | Kazuyuki Iijima, Masayuki Nishiguchi | 2000-01-04 |
| D417657 | Portable information terminal unit | — | 1999-12-14 |
| 5983173 | Envelope-invariant speech coding based on sinusoidal analysis of LPC residuals and with pitch conversion of voiced speech | Akira Inoue, Masayuki Nishiguchi | 1999-11-09 |
| 5960388 | Voiced/unvoiced decision based on frequency band ratio | Masayuki Nishiguchi, Shinobu Ono | 1999-09-28 |
| 5953696 | Detecting transients to emphasize formant peaks | Masayuki Nishiguchi | 1999-09-14 |
| 5930747 | Pitch extraction method and device utilizing autocorrelation of a plurality of frequency bands | Kazuyuki Iijima, Masayuki Nishiguchi, Shiro Omori | 1999-07-27 |
| D410443 | Portable character and image processing apparatus | — | 1999-06-01 |
| 5909663 | Speech decoding method and apparatus for selecting random noise codevectors as excitation signals for an unvoiced speech frame | Kazuyuki Iijima, Masayuki Nishiguchi | 1999-06-01 |
| 5899966 | Speech decoding method and apparatus to control the reproduction speed by changing the number of transform coefficients | Masayuki Nishiguchi, Shiro Omori, Kazuyuki Iijima | 1999-05-04 |
| 5878388 | Voice analysis-synthesis method using noise having diffusion which varies with frequency band to modify predicted phases of transmitted pitch data blocks | Masayuki Nishiguchi, Shinobu Ono | 1999-03-02 |
| 5873059 | Method and apparatus for decoding and changing the pitch of an encoded speech signal | Kazuyuki Iijima, Masayuki Nishiguchi, Shiro Omori | 1999-02-16 |
| 5852209 | Process for optically resolving 2-(3-benzoylphenyl) propionic acid | Hiroyuki Nohira, Shigeya Saijo, Masafumi Moriwaki, Shunji Kamiyama, Kazutoshi Toyoda +2 more | 1998-12-22 |
| 5848387 | Perceptual speech coding using prediction residuals, having harmonic magnitude codebook for voiced and waveform codebook for unvoiced frames | Masayuki Nishiguchi, Kazuyuki Iijima, Shiro Omori | 1998-12-08 |