Issued Patents 2002
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 6381262 | Information signal processing unit | — | 2002-04-30 |
| 6381402 | Information output device, information recording device, information duplication control system and recording medium of the same | Takehiro Sugita, Takashi Usui | 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 |
| 6360052 | Method and device for adding information to video signal, method and device for detection information from video signal, and recording medium | Nozomu Ikeda, Takehiro Sugita | 2002-03-19 |
| 6359999 | Method of adding information to video signal and information adding device | Hisayoshi Moriwaki, Takashi Kohashi, Yuji Kimura, Nozomu Ikeda | 2002-03-19 |
| 6359905 | Method and apparatus of detecting spectrum spread signal | Hisayoshi Moriwaki, Yuji Kimura, Takashi Kohashi, Nozomu Ikeda | 2002-03-19 |
| 6356705 | Video signal transmission method, superimposed information extraction method, video signal output device, video signal recording device, and video signal recording medium | Nozomu Ikeda | 2002-03-12 |
| 6343181 | Method and apparatus for superimposing additional information signal to video signal | Nozomu Ikeda | 2002-01-29 |
| 6342924 | Additional information superposition method and video signal outputting apparatus | Nozomu Ikeda, Takashi Kohashi, Yuji Kimura, Hisayoshi Moriwaki | 2002-01-29 |
| 6341141 | Method and apparatus for detecting spectrum spread signals | Takashi Kohashi, Hisayoshi Moriwaki, Yuji Kimura, Nozomu Ikeda | 2002-01-22 |
| 6339449 | Method and device for superimposing additional information on a video signal | Nozomu Ikeda, Hisayoshi Moriwaki, Takashi Kohashi, Yuji Kimura | 2002-01-15 |