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Your search returned 82 patents.
( 726/32 in Current US Classification ) |
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| 1 |
| Patent ID | Title | Date Filed |
| 6618484 | Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels
| July 5, 2002 |
| 6556679 | Copy-guard system and information recording medium used in the same system
| November 19, 1998 |
| 6480959 | Software system and associated methods for controlling the use of computer programs
| November 20, 1998 |
| 6477649 | Information recording apparatus, information reproducing apparatus, and information distribution system
| May 13, 1998 |
| 6477431 | Watermark detection
| November 4, 1999 |
| 6473859 | Image processing apparatus, method, and system, and computer-readable storage medium having program stored therein
| April 30, 1999 |
| 6449645 | System for monitoring the association of digitized information having identification indicia with more than one of uniquely identified computers in a network for illegal use detection
| March 2, 1999 |
| 6449367 | Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels
| February 23, 2001 |
| 6438694 | Apparatus for data copyright management system
| January 25, 2001 |
| 6438432 | Process for the protection of stored program controls from overwriting
| May 5, 1999 |
| 6427012 | Apparatus and method for embedding and extracting information in analog signals using replica modulation
| June 29, 1998 |
| 6351815 | Media-independent document security method and apparatus
| July 29, 1999 |
| 6256738 | CLV carrier copy protection system
| October 20, 1998 |
| 6209097 | Content protection method and content protection system
| December 1, 1998 |
| 6185687 | Signal reproducing/recording/transmitting method and apparatus and signal record medium
| August 19, 1999 |
| 6122739 | Digital compact disc player security system reproducing method and apparatus
| November 13, 1995 |
| 6115709 | Method and system for constructing a knowledge profile of a user having unrestricted and restricted access portions according to respective levels of confidence of content of the portions
| September 18, 1998 |
| 6081897 | Apparatus for monitoring and preventing unauthorized copying of digital data
| January 13, 1998 |
| 5896255 | Magnetic disc cartridge and corresponding system/method for limiting coping of software
| March 12, 1997 |
| 5841978 | Network linking method using steganographically embedded data objects
| July 27, 1995 |
| 5745678 | Method and system for the secured distribution of multimedia titles
| August 18, 1997 |
| 5742757 | Automatic software license manager
| May 30, 1996 |
| 5628015 | Method for unlocking software files locked to a specific storage device
| October 24, 1995 |
| 5592619 | High-security IC card
| July 27, 1994 |
| 5481672 | Detecting rewriting of stored data, using codes based on password and the stored data
| February 27, 1992 |
| 5131091 | Memory card including copy protection
| March 14, 1989 |
| 4462078 | Computer program protection method
| August 2, 1982 |
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