Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7893920 | Operation input device and method of operation input | — | 2011-02-22 |
| 7509217 | Vehicle detector and vehicle detecting method | — | 2009-03-24 |
| 6556679 | Copy-guard system and information recording medium used in the same system | Takehisa Kato, Taku Katoh, Hisashi Yamada, Naoki Endoh | 2003-04-29 |
| 6438692 | Copy protection apparatus and information recording medium used in this copy protection apparatus | Taku Kato, Takehisa Kato, Hisashi Yamada, Naoki Endoh | 2002-08-20 |
| 6301663 | Copy protection apparatus and information recording medium used in this copy protection apparatus | Taku Kato, Takehisa Kato, Hisashi Yamada, Naoki Endoh | 2001-10-09 |
| 6256390 | Device having a digital interface and a network system using such a device and a copy protection method | Takehiko Okuyama, Kenji Shimoda | 2001-07-03 |
| 6128434 | Multilingual recording medium and reproduction apparatus | Koichi Hirayama, Masatoshi Nakai, Yuichi Miyano | 2000-10-03 |
| 6118871 | Device having a digital interface and a network system using such a device and a copy protection method | Takehiko Okuyama, Kenji Shimoda | 2000-09-12 |
| 6028979 | Multilingual recording medium and reproduction apparatus | Koichi Hirayama, Masatoshi Nakai, Yuichi Miyano | 2000-02-22 |
| 6016295 | Audio system which not only enables the application of the surround sytem standard to special playback uses but also easily maintains compatibility with a surround system | Craig C. Todd | 2000-01-18 |
| 5999695 | Multilingual recording medium and reproduction apparatus | Koichi Hirayama, Masatoshi Nakai, Yuichi Miyano | 1999-12-07 |
| 5987126 | Device having a digital interface and a network system using such a device and a copy protection method | Takehiko Okuyama, Kenji Shimoda | 1999-11-16 |
| 5896358 | Audio system which not only enables the application of the surround system standard to special playback uses but also easily maintains compatibility with a surround system | Craig C. Todd | 1999-04-20 |
| 5850500 | Recording medium comprising a plurality of different languages which are selectable independently of each other | Koichi Hirayama, Masatoshi Nakai, Yuichi Miyano | 1998-12-15 |
| 5835669 | Multilingual recording medium which comprises frequency of use data/history data and a plurality of menus which are stored in a still picture format | Koichi Hirayama, Masatoshi Nakai, Yuichi Miyano | 1998-11-10 |
| 5652824 | Multilingual recording medium and reproducing apparatus with automatic selection of substitutes and languages based on frequency of selections | Koichi Hirayama, Masatoshi Nakai, Yuichi Miyano | 1997-07-29 |
| 5084790 | Recording control apparatus | — | 1992-01-28 |
| 5050011 | Recording control apparatus | — | 1991-09-17 |
| 5003410 | System for recording/reproducing an information source having an apparatus specific identification signal | Osamu Yasuda | 1991-03-26 |
| 4965680 | Apparatus for releasing a restriction on the recording of an information signal on a recording medium | — | 1990-10-23 |
| 4924328 | System for recording/reproducing an information source having an apparatus-specific identification signal | Osamu Yasuda | 1990-05-08 |
| 4496937 | Sampled signal generation circuit | Kazuo Kitagawa, Hideshi Kira | 1985-01-29 |
| 4491697 | Condenser microphone | Masanori Tanaka | 1985-01-01 |
| 4472687 | Audio power amplifier for supplying electric power to a load by switching of power supply voltage | Seigou Kashiwagi | 1984-09-18 |
| 4353060 | Analog to digital converter system with an output stabilizing circuit | Yoshiyuki Ishizawa, Masanori Tanaka, Koji Iwasaki | 1982-10-05 |