Issued Patents All Time
Showing 26–50 of 75 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6711276 | Control method and apparatus for embedding information in data | Hiroshi Yoshiura, Isao Echizen, Takao Arai, Hiroyuki Kimura, Toshifumi Takeuchi +2 more | 2004-03-23 |
| 6636551 | ADDITIONAL INFORMATION TRANSMISSION METHOD, ADDITIONAL INFORMATION TRANSMISSION SYSTEM, INFORMATION SIGNAL OUTPUT APPARATUS, INFORMATION SIGNAL PROCESSING APPARATUS, INFORMATION SIGNAL RECORDING APPARATUS AND INFORMATION SIGNAL RECORDING MEDIUM | Nozomu Ikeda, Takashi Kohashi, Yuji Kimura, Hisayoshi Moriwaki | 2003-10-21 |
| 6603576 | Method and apparatus for superimposing additional information with image signal | Masashi Nakamura | 2003-08-05 |
| 6577810 | Method of restricting reproduction for information signal, information signal reproducing device, and information signal recording medium | — | 2003-06-10 |
| 6574735 | Information signal recording/reproducing system, information signal recording device, information signal reproducing device and information signal recording/reproducing process | Nozomu Ikeda | 2003-06-03 |
| 6571220 | Copy generation management method, information signal reproducing method, information signal reproducing apparatus, and information signal recording apparatus | Ikuko Sakudo, Takashi Yamanishi | 2003-05-27 |
| 6526510 | Signal reproducing method and apparatus, signal recording method and apparatus and signal recording system | Teruhiko Kori, Tadashi Ezaki, Yuji Kimura | 2003-02-25 |
| 6522685 | Information signal processing unit | — | 2003-02-18 |
| 6510183 | Method and apparatus for superimposing and detecting an additional information signal | Nozomu Ikeda, Takehiro Sugita, Takashi Usui | 2003-01-21 |
| 6487363 | Video duplication control signal, video playback device, video recording device, information superimposing and extracting device and video recording medium | Takehiro Sugita, Takashi Usui | 2002-11-26 |
| 6480607 | Encrypted data reproducing transmitting and processing method and apparatus with separately encrypted control data | Teruhiko Kori, Tadashi Ezaki, Yuji Kimura | 2002-11-12 |
| 6477316 | Video signal transmission method, superimposed information extraction method, video signal output device, video signal recording device, and video signal recording medium | Nozomu Ikeda | 2002-11-05 |
| 6470137 | Method and apparatus for superimposing a level changed spectrum spread additional information signal on a video signal | Nozomu Ikeda, Hisayoshi Moriwaki, Takashi Kohashi, Yuji Kimura | 2002-10-22 |
| 6466617 | Additional information signal superimposing and detecting system, additional information superimposing and detecting method, and additional information signal detecting method and apparatus therefor | Hisayoshi Moriwaki, Takashi Kohashi, Yuji Kimura, Nozomu Ikeda | 2002-10-15 |
| 6453118 | Information transmission method, information duplication prohibiting method, information duplication prohibition device and information crevording medium | Takehiro Sugita, Takashi Usui | 2002-09-17 |
| 6449425 | Information signal output control method, information signal duplication prevention method, information signal duplication prevention device, and information signal recording medium | — | 2002-09-10 |
| 6441859 | Image signal transmitting method, superimposed signal extracting method, image signal output apparatus, image signal receiving apparatus and image signal recording medium | Nozomu Ikeda | 2002-08-27 |
| 6433946 | Information signal output control method, information signal duplication prevention method, information signal duplication prevention device, and information signal recording medium | — | 2002-08-13 |
| 6430291 | Method and device for controlling information signal recording | Nozomu Ikeda | 2002-08-06 |
| 6427047 | Apparatus and method for protecting the unauthorized duplication of a signal | — | 2002-07-30 |
| 6389220 | Information signal duplication control system | Takashi Usui, Takehiro Sugita | 2002-05-14 |
| 6389137 | VIDEO SIGNAL TRANSMITTING METHOD, VIDEO SIGNAL OUTPUT DEVICE, VIDEO SIGNAL RECEIVER, VIDEO ANTI-DUPLICATION CONTROL SYSTEM, ADDITIONAL INFORMATION SUPERIMPOSING AND EXTRACTING SYSTEM AND VIDEO SIGNAL RECORDING MEDIUM | Takehiro Sugita, Takashi Usui | 2002-05-14 |
| 6381402 | Information output device, information recording device, information duplication control system and recording medium of the same | Takehiro Sugita, Takashi Usui | 2002-04-30 |
| 6381262 | Information signal processing unit | — | 2002-04-30 |
| 6370320 | Information output device, information recording device, information duplication control system and recording medium of the same | Takehiro Sugita, Takashi Usui | 2002-04-09 |