Issued Patents All Time
Showing 26–50 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8181040 | Program execution device | Hideki Matsushima, Yukie Shoda, Shunji Harada | 2012-05-15 |
| 8176239 | Semiconductor memory card access apparatus, a computer-readable recording medium, an initialization method, and a semiconductor memory card | Takuji Maeda | 2012-05-08 |
| 8175441 | Playback program | Kenji Tagawa, Hideki Matsushima, Tomokazu Ishikawa, Shinji Inoue, Masayuki Kozuka | 2012-05-08 |
| 8156347 | Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and computer-readable recording medium | Kenji Tagawa, Hideki Matsushima, Tomokazu Ishikawa, Shinji Inoue, Masayuki Kozuka | 2012-04-10 |
| 8127368 | Semiconductor memory card and data reading apparatus, and data reading/reproducing apparatus | Makoto Tatebayashi, Taihei Yugawa, Masataka Minami, Masayuki Kozuka | 2012-02-28 |
| 8015349 | Semiconductor memory card access apparatus, a computer-readable recording medium, an initialization method, and a semiconductor memory card | Takuji Maeda | 2011-09-06 |
| 7996914 | Semiconductor memory card and data reading apparatus, and data reading/reproducing apparatus | Makoto Tatebayashi, Taihei Yugawa, Masataka Minami, Masayuki Kozuka | 2011-08-09 |
| 7930478 | Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method and a computer-readable storage medium | Kenji Tagawa, Hideki Matsushima, Tomokazu Ishikawa, Shinji Inoue, Masayuki Kozuka | 2011-04-19 |
| 7899982 | Semiconductor memory card access apparatus, a computer-readable recording medium, an initialization method, and a semiconductor memory card | Takuji Maeda | 2011-03-01 |
| RE42019 | Distribution system, semiconductor memory card, receiving apparatus, computer-readable recording medium and receiving method | Kenji Tagawa, Hideki Matsushima, Masayuki Kozuka, Mitsuhiro Inoue, Yasushi Uesaka +4 more | 2010-12-28 |
| 7788487 | Data processing apparatus | Takayuki Ito, Kouichi Kanemura, Tomoyuki Haga, Yoshikatsu Ito | 2010-08-31 |
| 7747870 | Apparatuses and methods for decrypting encrypted data and locating the decrypted data in a memory space used for execution | Rieko Asai, Yukie Shoda, Yoshikatsu Ito, Taichi Sato, Hideki Matsushima +1 more | 2010-06-29 |
| 7734864 | Semiconductor memory card access apparatus, a computer-readable recording medium, an initialization method, and a semiconductor memory card | Takuji Maeda | 2010-06-08 |
| RE41096 | Distribution system, semiconductor memory card, receiving apparatus, computer-readable recording medium and receiving method | Kenji Tagawa, Hideki Matsushima, Masayuki Kozuka, Mitsuhiro Inoue, Yasushi Uesaka +4 more | 2010-02-02 |
| 7596698 | Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and computer-readable recording medium | Kenji Tagawa, Hideki Matsushima, Tomokazu Ishikawa, Shinji Inoue, Masayuki Kozuka | 2009-09-29 |
| 7533276 | Program execution device | Hideki Matsushima, Yukie Shoda, Shunji Harada | 2009-05-12 |
| 7529938 | Method, apparatus and system for performing authentication according to challenge-response protocol using scrambled access information | Osamu Shibata, Taihei Yugawa, Tsutomu Sekibe, Yoshiyuki Saito, Toshihiko Otake | 2009-05-05 |
| 7503049 | Information processing apparatus operable to switch operating systems | Kouichi Kanemura, Takayuki Ito | 2009-03-10 |
| 7471878 | Playback program | Kenji Tagawa, Hideki Matsushima, Tomokazu Ishikawa, Shinji Inoue, Masayuki Kozuka | 2008-12-30 |
| 7444520 | Data conversion system for protecting software against analysis and tampering | Yoshikatsu Ito | 2008-10-28 |
| 7398353 | Semiconductor memory card access apparatus, a computer-readable recording medium, an initialization method, and a semiconductor memory card | Takuji Maeda | 2008-07-08 |
| 7392342 | Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and a computer-readable storage medium | Kenji Tagawa, Hideki Matsushima, Tomokazu Ishikawa, Shinji Inoue, Masayuki Kozuka | 2008-06-24 |
| 7392225 | Revocation information updating method, revocation information updating apparatus and storage medium | Shunji Harada, Makoto Tatebayashi, Masayuki Kozuka, Toru Kamibayashi, Masafumi Tamura | 2008-06-24 |
| 7228423 | Apparatuses and methods for decrypting encrypted data and locating the decrypted data in a memory space used for execution | Rieko Asai, Yukie Shoda, Yoshikatsu Ito, Taichi Sato, Hideki Matsushima +1 more | 2007-06-05 |
| 7212875 | Semiconductor memory card, apparatus for recording data onto the semiconductor memory card, and apparatus for reproducing data of the semiconductor memory card | Kenji Tagawa, Hideki Matsushima, Tomokazu Ishikawa, Shinji Inoue, Masayuki Kozuka | 2007-05-01 |