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| Number | Title | Issue Date |
| 7783039 | Digital recording device, digital reproduction device, digital recording/reproduction device, encryption device, decryption device, encryption method, and decryption method In a digital recording apparatus including a data control circuit 2a, a memory 4, an encryption circuit 5, an interface 6, a DVD drive 8, and a CPU 3, when encryption is required during recording, data is temporarily ... | 08/24/2010 |
| 7336806 | Iris-based biometric identification A method includes forming a feature vector associated with an iris of an individual using a transform operation including converting an iris image into a log-polar image, scaling one or more samples in the log-polar image according to a Fourier-Mellin transform, and... | 02/26/2008 |
| 7283631 | Encryption processing apparatus and encryption processing system In the system which stores data sent out from an external equipment temporarily in a storage apparatus to output, to ensure the security of data during the storage period, there has been a conventional technique for the encryption of all received data. However, the ... | 10/16/2007 |
| 7260552 | Secure remote electronic voting system and cryptographic protocols and computer programs employed The method employs interrelated cryptographic processes and protocols to provide reliability to vote casting, ballots recount, and verification of vote or poll results. These cryptographic processes and protocols jointly constitute a cryptographic voting scheme capa... | 08/21/2007 |
| 7242770 | Secure encryption/decryption for elevators This system relates to a secure encryption/decryption protocol for elevator displays and controls. The protocol uses an algorithm to scramble information before transmission and reassemble it after transmission. The system uses at least one block of data assembled i... | 07/10/2007 |
| 7222362 | Non-transferable anonymous credentials An anonymous credential system which requires a user who is asserting a credential to have knowledge of the master key of the user who was originally granted that credential. In order for a user to transfer the ability to assert any one of their credentials to anoth... | 05/22/2007 |
| 7209555 | Elliptic curve converting device, elliptic curve converting method, elliptic curve utilization device and elliptic curve generating device An elliptic curve converting device that converts a first elliptic curve defined on a finite field F into a second elliptic curve defined on the finite field F comprises: an elliptic curve generating unit 210 that searches an elliptic curve that satisfies a s... | 04/24/2007 |
| 7184569 | Marking articles using a covert digitally watermarked image A marking system that includes forming at least one marking in or on an article, wherein the image formed is not visible to the unaided human observer, and further contains at least one digital watermark. The digitally watermarked image comprises emissive and photoa... | 02/27/2007 |
| 7185203 | Method for the provision of an individual device code for an electronic device The invention relates to a method for the provision of a device code for an electronic device, which is at least required for the first commissioning of the device code, whereby the device is inoperable without the input of the device code. The method is characteriz... | 02/27/2007 |
| 7177422 | Elliptic curve encryption processing method, elliptic curve encryption processing apparatus, and program An elliptic curve encryption processing method and an elliptic curve encryption processing apparatus enable high-speed elliptic curve encryption processing computations to be realized. In elliptic curve encryption processing computations, two scalar multiplications,... | 02/13/2007 |
| 7136502 | Printing media and methods employing digital watermarking Stationery, or other printable media, is encoded with a digital watermark. The watermark is not conspicuous to a human observer of the media, yet conveys plural bits of auxiliary information when optically scanned and digitally processed. The watermark can be formed... | 11/14/2006 |
| 7116781 | Counteracting geometric distortions in watermarking A digital watermarking method receives multimedia data, such as images or audio, in compressed or uncompressed form, and extracts a digital watermark while counteracting geometric distortions. To counteract geometric distortion, a watermark reading process translate... | 10/03/2006 |
| 7113596 | Embedding information related to a subject of an identification document in the identification document The present invention relates to an identification document for a subject. The identification document includes a substrate, and a visual image formed on the substrate. The visual image includes a face image of the subject in a first area, and invisible but retrieva... | 09/26/2006 |
| 7108742 | Ink compositions containing lanthanide complexes The invention relates to an ink composition containing (a) a compound of formula (I), Lm−Ln3+(Ch−)n (I), wherein Ln represents a lanthanide, CH− is a negatively charged ligand containing at least one UV ab... | 09/19/2006 |
| 7111322 | Automatic generation of a new encryption key A device (such as a printer or a network device that may be connected to the printer) that is connected to a network and which performs secure operations using an existing encryption keypair maintained within the device, generates a new encryption keypair within the... | 09/19/2006 |
| 7103183 | Electronic device and production method therefor An electronic apparatus that allows data to be written efficiently to an EEPROM with provisions made to greatly reduce the risk of the data stored in the EEPROM being altered in the field, and a production method for the same are achieved. The method is the producti... | 09/05/2006 |
| 7098808 | System having termination for data loading port A subsystem of an avionics system is operated in a first mode for receiving software via a port; and in a second mode in accordance with a circuit that includes a terminator coupled to the port. By using the terminator to convey information regarding a desired confi... | 08/29/2006 |
| 7073056 | Apparatus and method for demonstrating and confirming the status of digital certificates and other data Methods and apparatuses for providing cryptographic assurance based on ranges as to whether a particular data item is on a list. ... | 07/04/2006 |
| 7039214 | Embedding watermark components during separate printing stages The present invention relates to embedding a document with multiple watermark components at different printing stages. A document is preprinted to include a first digital watermark component. The document is then reprinted, perhaps with a lower quality printer, to i... | 05/02/2006 |
| 7028188 | Document authentication using the physical characteristics of underlying physical media A method for authenticating a document in which a document key for the document is generated by examining one or more attributes of a physical media that underlies the document. An original image is then imparted onto the physical media so that the original image is... | 04/11/2006 |
| 7009419 | Method and apparatus for selecting an encryption integrated circuit operating mode A method and circuit for preventing external access to secure data of an integrated circuit while supporting DFT is disclosed. In accordance with the method the integrated circuit is automatically placed into the test mode at integrated circuit power-up from a power... | 03/07/2006 |
| 6999947 | License devolution apparatus There is provided a license devolution system for devolving the right of using as to contents. The license devolution system makes it possible to copy or distribute contents while contributing to a protection of the copyright for the contents. Contents is encrypted ... | 02/14/2006 |
| 6980654 | System and method for authenticating an article A method of applying an authentication image to an article is presented. The method comprises obtaining a digitized version of the authentication image, encoding the digitized version of the authentication image to produce an encoded latent image, and printing the e... | 12/27/2005 |
| 6968057 | Emulsion products and imagery employing steganography Images are steganographically marked with codes that can be used, e.g., by reference to a remote registry, to identify the image proprietors. Some embodiments pre-mark blank emulsion film or paper products with such codes, so that images formed thereon can be traced... | 11/22/2005 |
| 6931130 | Dynamically adjustable software encryption A method, system, and computer program product for dynamically adjusting the encryption level based on the geographic location of a software program are disclosed. The method includes an initial step of determining a geographic location associated with the software ... | 08/16/2005 |
| 6928162 | Method and system for manipulating and telescoping a hash function A method and system for providing a hash and a complement of the hash for an item in a computer system are disclosed. The method and system include providing a plurality of components from the item. The plurality of components include a first component and a last co... | 08/09/2005 |
| 6907124 | Optical encryption and decryption method and system The invention relates to securing of information utilising optical imaging technologies and more specifically to phase encryption and decryption of images. An image is encrypted into a mask having a plurality of mask resolution elements (Xm, Ym... | 06/14/2005 |
| 6873975 | Content usage control system, content usage apparatus, computer readable recording medium with program recorded for computer to execute usage method A content usage control system comprises a copyright holder system, content server, license server and user system. The ACL setting section of the copyright holder system sets a license ACL expressed as a structure by a combination of logic sums and logic products o... | 03/29/2005 |
| 6816594 | Elliptic curve generating method and device, elliptic encryption system and recording medium It is an object of the present invention to provide a method and an apparatus for generating a safe normal form elliptic curve transformable to a Montgomery type elliptic curve as well as to provide an elliptic curve cryptosystem and a storage medium therefor. | 11/09/2004 |
| 6798883 | Method of testing a randomizer A method of testing a randomizer having at least one source of probabilistic data and a device for mixing the probabilistic data to form random data, where the probabilistic data includes at least two states, by receiving a probability of occurrence of each of the a... | 09/28/2004 |
| 6754348 | System and method for determining winner A system and method for determining winner is capable of keep all of the voting contents secret with permitting only determination of winning or losing, and further permitting the third party to verify the determination. The system generally includes voter sub-syste... | 06/22/2004 |
| 6751321 | Digital data reproduction device A source of MPEG2 video data is connected with a dedicated AV device or personal computer by means of an IEEE 1394 interface. A transmission unit in the source has an IEEE 1394 encryption unit and a sending I/F unit. A reception unit varies between the dedicated AV ... | 06/15/2004 |
| 6751320 | Method and system for preventing reproduction of professional photographs A reproduction apparatus (e.g., photo kiosk) includes a lens for imaging a customer-provided original onto an opto-electronic detector for producing image data, and a reproduction system for producing a copy therefrom. Images that are to be resistant against copying... | 06/15/2004 |
| 6731754 | Apparatus and method for maintaining and transmitting secret contents of a signal The secrecy security of coded data can be improved markedly by making it possible to freely vary, within a plurality of natural numbers, the values as the result of coding and decoding operations by a converter using a feedback coding method. As a digital informatio... | 05/04/2004 |
| 6683953 | Encoding method, encoding-decoding apparatus, and code communications system Instead of immediately encrypting a plain text, a n-bit plain text is first converted to a m-bit of expanded plain text in order to limit the weight of the plain text to w, and that expanded plain text is then encrypted. By first converting the plain text... | 01/27/2004 |
| 6678378 | 3-dimensional shape data encryption and decryption Encryption and decryption methods for 3-dimensional shape data, especially copyrighted data, useful for detecting unauthorized use or piracy of a 3-dimensional object's shape represented by the 3-dimensional shape data are provided. An alteration is added... | 01/13/2004 |
| 6664803 | Method and apparatus for selecting an encryption integrated circuit operating mode A method and circuit for preventing external access to secure data of an integrated circuit while supporting DFT is disclosed. In accordance with the method the integrated circuit is automatically placed into the test mode at integrated circuit power-up f... | 12/16/2003 |
| 6549624 | Apparatus and method for enhancing the security of negotiable documents The invention relates to an apparatus and method for enhancing the security of selected information associated with a negotiable document, such as the monetary value of a cheque. In the invention, one or more security features are printed or applied onto ... | 04/15/2003 |
| 6537747 | Data transmission using DNA oligomers The present invention is directed to methods for (a) encrypting information in the form of words, numbers, or graphical images, by obtaining a set of nucleic acid strands or nucleic acid analog strands having subunit sequences selected to represent the in... | 03/25/2003 |
| 6530023 | Method and device that validates time of an internal source using an external source Digital data is provided with a time stamp of an internal time signal of an internal clock. The internal time signal is validated by receiving and evaluating an internal broadcast or a cable signal of an external time source, from which a standard time ca... | 03/04/2003 |
