"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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| Number | Title | Issue Date |
| 7308099 | Device and method for producing an encoded audio and/or video data stream An apparatus for generating an encrypted data stream representing an audio and/or video signal comprises an encoder for encoding an input signal to generate a data stream with a predefined data stream syntax as output signal. The apparatus further comprises an encry... | 12/11/2007 |
| 7266200 | Method and apparatus for encryption of data A method and apparatus for encryption of data are provided, in which the data is made up of a series of data items (600). The data items (600) maybe bytes of data or blocks of data. The method includes providing a plurality of encryption algorithms ( | 09/04/2007 |
| RE38739 | Facsimile apparatus A facsimile apparatus is provided with changeover means that makes it possible to pass signals through or to bypass a coder, which encrypts transmission information, and a decoder, which decodes encrypted information that has been received. Whether or not a facsimil... | 05/31/2005 |
| 6414757 | Document security system and method A system and method for secured image creation. A bitmap image is processed to separate color or greyscale planes, or is used as a greyscale, single plane image. The plane(s) are each converted into microtype character layers with each layer arranged at a... | 07/02/2002 |
| 6269164 | Method of and system for encrypting messages A technique for encrypting and decrypting a data message is described herein and includes a stream cipher, a block cipher and a key generation embodiment which use a process of Summary Reduction. This overall technique uses a secret key to generate cipher... | 07/31/2001 |
| 6226384 | Method and device for providing controlled access video signals without providing a signal in the clear A display device for receiving encrypted or scramble video data and for decrypting or descrambling the video data such that a signal is not provided "in the clear". The video data is stored in a memory array in an encrypted form and read out from the memo... | 05/01/2001 |
| 6222926 | Method and device for providing controlled access video signals without providing a signal in the clear A LCD display device for receiving encrypted video data and for decrypting the video data such that a signal is not provided "in the clear" before receipt by the display device. The video data is encrypted within a row of video and decrypted at the displa... | 04/24/2001 |
| 4916739 | Adhesive photocopyable transparency for use in a secure facsimile transmission system An adhesive photocopyable transparency for use in a secure facsimile transmission system wherein one of two partial documents each containing portions of an original document which are complementary and mutually exclusive is photocopied onto the transpare... | 04/10/1990 |
| 4821321 | Automatic secure transmission and reception of pictorial information A real time coding system for the transmission and reception of pictorial o-dimensional information at television (TV) rates. In one coding system, the input signal and a coding signal are modulo added in an operational amplifier and are transmitted there... | 04/11/1989 |
| 4177486 | Facsimile device 1. In a facsimile system, a distributor including an array of n electrical contacts, a source of potential therefor and a normally rotating brush for applying potential from said source to said contacts in sequence, a plurality of cryptographic rotors in ... | 12/04/1979 |
| 4173025 | Electrical signal scrambling apparatus 2. In an apparatus of the nature described, the combination of means for storing a portion of an electrical signal, means for picking up elements of said portion, a plurality of switching means controlling the conduction of said elements each switching me... | 10/30/1979 |