Issued Patents All Time
Showing 51–60 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7028189 | Derivation and quantization of robust non-local characteristics for blind watermarking | M. Kivanc Mihcak, Ramarathnam Venkatesan | 2006-04-11 |
| 7020777 | Derivation and quantization of robust non-local characteristics for blind watermarking | M. Kivanc Mihcak, Ramarathnam Venkatesan | 2006-03-28 |
| 7020775 | Derivation and quantization of robust non-local characteristics for blind watermarking | M. Kivanc Mihcak, Ramarathnam Venkatesan | 2006-03-28 |
| 6952774 | Audio watermarking with dual watermarks | Darko Kirovski, Henrique S. Malvar | 2005-10-04 |
| 6574348 | Technique for watermarking an image and a resulting watermarked image | Ramarathnam Venkatesan, Thathachar S. Jayram | 2003-06-03 |
| 6570988 | Simple technique for implementing a cryptographic primitive using elementary register operations | Ramarathnam Venkatesan | 2003-05-27 |
| 6546114 | Technique for detecting a watermark in a marked image | Ramarathnam Venkatesan, Thathachar S. Jayram | 2003-04-08 |
| 6483918 | Technique for producing a parameter, such as a checksum, through a primitive that uses elementary register operations | Ramarathnam Venkatesan | 2002-11-19 |
| 6226742 | Cryptographic technique that provides fast encryption and decryption and assures integrity of a ciphertext message through use of a message authentication code formed through cipher block chaining of the plaintext message | Ramarathnam Venkatesan | 2001-05-01 |
| 6128737 | Method and apparatus for producing a message authentication code in a cipher block chaining operation by using linear combinations of an encryption key | Ramarathnam Venkatesan | 2000-10-03 |