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Your search returned 161 patents.
( 713/179 in Current US Classification ) |
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| Patent ID | Title | Date Filed |
| 6580804 | Pixel-based digital watermarks located near edges of an image
| August 5, 1999 |
| 6570997 | Image processing apparatus and method therefor, and storage medium
| March 19, 1999 |
| 6570989 | CRYPTOGRAPHIC PROCESSING APPARATUS, CRYPTOGRAPHIC PROCESSING METHOD, AND STORAGE MEDIUM STORING CRYPTOGRAPHIC PROCESSING PROGRAM FOR REALIZING HIGH-SPEED CRYPTOGRAPHIC PROCESSING WITHOUT IMPAIRING SECURITY
| April 21, 1999 |
| 6564322 | Method and apparatus for watermarking with no perceptible trace
| January 26, 1999 |
| 6560709 | Method and apparatus for the transfer of sensitive card data over an unsecure computer network
| April 30, 1999 |
| 6557105 | Apparatus and method for cryptographic-based license management
| April 14, 1999 |
| 6556688 | Watermarking with random zero-mean patches for printer tracking
| March 15, 1999 |
| 6526146 | Information recording system
| February 16, 1999 |
| 6512836 | Systems and methods for etching digital watermarks
| July 28, 2000 |
| 6493824 | Secure system for remotely waking a computer in a power-down state
| February 19, 1999 |
| 6490355 | Method and apparatus for use of a time-dependent watermark for the purpose of copy protection
| February 24, 1999 |
| 6477431 | Watermark detection
| November 4, 1999 |
| 6457128 | OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON AN OPTICAL DISK, AND A METHOD OF MANUFACTURING AN OPTICAL DISK
| June 15, 2000 |
| 6449718 | Methods and apparatus for partial encryption of tokenized documents
| April 9, 1999 |
| 6442276 | Verification of authenticity of goods by use of random numbers
| July 21, 1997 |
| 6418223 | Authentication algorithms for video images
| February 4, 1999 |
| 6397334 | Method and system for authenticating objects and object data
| December 17, 1998 |
| 6397332 | Verification data generating apparatus, data verification apparatus and storage medium for storing verification data generating program
| July 15, 1998 |
| 6385731 | Secure on-line PC postage metering system
| January 5, 2001 |
| 6345100 | Robust watermark method and apparatus for digital signals
| October 14, 1998 |
| 6341350 | Device and method for processing image data, transmitting medium, and recording medium
| September 1, 1998 |
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