Issued Patents All Time
Showing 51–75 of 93 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7620811 | Server device and program management system | Takuji Maeda, Kouji Miura, Katsumi Tokuda | 2009-11-17 |
| 7596698 | Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and computer-readable recording medium | Teruto Hirota, Kenji Tagawa, Hideki Matsushima, Tomokazu Ishikawa, Masayuki Kozuka | 2009-09-29 |
| 7555483 | File management method and information processing device | Takuji Maeda, Hirokazu So, Makoto Ochi, Masato Suto | 2009-06-30 |
| 7546468 | Program update method and server | Makoto Fujiwara, Yusuke Nemoto, Junichi Yasui, Takuji Maeda, Takayuki Ito +1 more | 2009-06-09 |
| 7539312 | Program update method and server | Makoto Fujiwara, Yusuke Nemoto, Junichi Yasui, Takuji Maeda, Takayuki Ito +1 more | 2009-05-26 |
| 7533378 | File-update apparatus for updating a file recorded on a recording medium | Takuji Maeda | 2009-05-12 |
| 7475185 | Nonvolatile memory system, nonvolatile memory device, memory controller, access device, and method for controlling nonvolatile memory device | Masahiro Nakanishi, Tomoaki Izumi, Tetsushi Kasahara, Kazuaki Tamura, Kiminori Matsuno +5 more | 2009-01-06 |
| 7471878 | Playback program | Kenji Tagawa, Hideki Matsushima, Teruto Hirota, Tomokazu Ishikawa, Masayuki Kozuka | 2008-12-30 |
| 7401174 | File system defragmentation and data processing method and apparatus for an information recording medium | Hirokazu So, Makoto Ochi, Takuji Maeda | 2008-07-15 |
| 7392342 | Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and a computer-readable storage medium | Kenji Tagawa, Hideki Matsushima, Teruto Hirota, Tomokazu Ishikawa, Masayuki Kozuka | 2008-06-24 |
| 7340614 | Semiconductor device including encryption section, semiconductor device including external interface, and content reproduction method | Makoto Fujiwara, Yusuke Nemoto, Junichi Yasui, Takuji Maeda, Takayuki Ito +1 more | 2008-03-04 |
| 7275161 | Method, system, device and computer program for mutual authentication and content protection | Makoto Ochi | 2007-09-25 |
| 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, Teruto Hirota, Tomokazu Ishikawa, Masayuki Kozuka | 2007-05-01 |
| 7159244 | Audio data playback management system and method with editing apparatus and recording medium | Hideki Matsushima, Katsumi Tokuda, Shunji Harada, Teruto Hirota | 2007-01-02 |
| 7065782 | Digital broadcasting system, digital broadcasting apparatus, and receiver apparatus for digital broadcasts | Tatsuya Shimoji, Yuki Kusumi, Masahiro Oashi, Kazuo Okamura, Takashi Kakiuchi +7 more | 2006-06-20 |
| 7010372 | 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, Teruto Hirota, Tomokazu Ishikawa, Masayuki Kozuka | 2006-03-07 |
| 6992959 | Optical disk, method of reproducing and copying optical disk, and method of preventing illegal use of optical disk | Yoshihiro Tosaki, Tsutomu Kai, Hiromichi Shimada | 2006-01-31 |
| 6971022 | Cryptographic apparatus for performing cryptography on a specified area of content data | Noboru Katta, Susumu Ibaraki, Makoto Tatebayashi | 2005-11-29 |
| 6961301 | Optical disk having synchronization region formed between pre-recorded area and recordable area | Takeharu Yamamoto, Yoshihiro Kanda, Hiroyuki Yamaguchi | 2005-11-01 |
| 6944861 | Program reception/execution apparatus that can commence execution of a machine program having only received the program in part, and a program transmission apparatus that enables such execution | Masahiro Oashi, Yuki Kusumi, Tatsuya Shimoji, Ikuo Minakata, Masayuki Kozuka +7 more | 2005-09-13 |
| 6865431 | Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and computer-readable recording medium | Teruto Hirota, Kenji Tagawa, Hideki Matsushima, Tomokazu Ishikawa, Masayuki Kozuka | 2005-03-08 |
| 6832293 | Audio playback apparatus and method for resuming interrupted playback recording | Kenji Tagawa, Hideki Matsushima, Teruto Hirota, Tomokazu Ishikawa, Masayuki Kozuka | 2004-12-14 |
| 6799315 | High speed virtual machine and compiler | Hiroyuki Waki, Satoru Hayama, Mitsuko Fujita, Akira Ishikawa | 2004-09-28 |
| 6779116 | Playback apparatus and playback method | Kenji Tagawa, Hideki Matsushima, Teruto Hirota, Tomokazu Ishikawa, Masayuki Kozuka | 2004-08-17 |
| 6757911 | Digital broadcasting system, digital broadcasting apparatus, and a reception apparatus for digital broadcasts | Tatsuya Shimoji, Kazuo Okamura, Junichi Hirai, Masahiro Oashi, Takashi Kakiuchi +7 more | 2004-06-29 |