| 7039614 |
Method for simulcrypting scrambled data to a plurality of conditional access devices |
| May-2-2006 |
In accordance with one embodiment, a method for storing a normal scrambled digital program is provided. The method includes receiving a scrambled program, and receiving a plurality of access requirements.... |
| 7003118 |
High performance IPSEC hardware accelerator for packet classification |
| Feb-21-2006 |
An architecture for a high performance IPSEC accelerator. The architecture includes components for scanning fields of packets, programming an IPSEC services device according to the scanned fields, and... |
| 7000106 |
Methods and apparatus for kernel mode encryption of computer telephony |
| Feb-14-2006 |
Disclosed is a computer-readable medium containing program instructions for configuring a first computer so that a first telephony client on the first computer may securely communicate with a second telephony... |
| 6965682 |
Data transmission by watermark proxy |
| Nov-15-2005 |
A media object sensed at one location is delivered at a second remote location, or an application associated with the object is made available at the second location. In some embodiments, the delivered... |
| 6954542 |
Image processing apparatus and method |
| Oct-11-2005 |
Upon embedding additional information in image information, since an image region in which the additional information can be embedded is limited, the information size that can be embedded is often limited,... |
| 6950520 |
Method and apparatus for carrying data in a video signal so that the data is not recorded |
| Sep-27-2005 |
A method and apparatus for modifying a video signal to allow it to carry encoded data which is detectable at a suitably compliant receiver but is not recorded by a conventional video recorder. One application... |
| 6873975 |
Content usage control system, content usage apparatus, computer readable recording medium with program recorded for computer to execute usage method |
| Mar-29-2005 |
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... |
| 6842522 |
Secure digital video disk and player |
| Jan-11-2005 |
A method for recoding data on an optical medium such as DVD. The method includes receiving main data from a data source, determining a plurality of data frame values in response to the main data, inverting... |
| 6836548 |
Communications security and trusted path method and means |
| Dec-28-2004 |
A trusted path device is described which may be used stand alone or may be retrofitted to a users untrusted computer console or workstation so that an untrusted data input may be displayed on an untrusted... |
| 6792110 |
Apparatus and method for enhancing the security of negotiable instruments |
| Sep-14-2004 |
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... |
| 6742123 |
Apparatus and methods for preventing denial of service attacks |
| May-25-2004 |
In one aspect of the invention, the frames of a thread stack that associated with the misbehaving code are popped from the thread stack. Exception handling code is allowed to execute for trusted code by... |
| 6724913 |
Digital watermarking |
| Apr-20-2004 |
A watermarking method and device to embed a digitized watermark into a digital image file in the transformation domain is disclosed. In the watermarking technology of this invention, the digitized watermark... |
| 6628802 |
Marking and determining distortion in an image |
| Sep-30-2003 |
The present invention provides methods and apparatus that reverse the notion of the attack process in using intentional image distortion techniques as a means of indelibly marking an original image. It... |
| 6601172 |
Transmitting revisions with digital signatures |
| Jul-29-2003 |
In a computer network, documents are produced, the document is hashed to produce a fingerprint, and the fingerprint is encrypted to sign the document then the document signature is transmitted from the... |
| 6542609 |
Method and apparatus for scrambling a high definition television signal |
| Apr-1-2003 |
Method and apparatus for scrambling a high definition television signal to discourage unauthorized recording of same. While recording per se is not prevented, the resulting recorded signal is rendered... |
| 6516064 |
Signal recording apparatus, signal record medium and signal reproducing apparatus |
| Feb-4-2003 |
A signal reproducing apparatus in which unauthorized decoding or copying is rendered difficult. The apparatus is configured for reproducing ciphered data from a disc-shaped record medium 101 on which there... |
| 6493457 |
Electronic watermarking in the compressed domain utilizing perceptual coding |
| Dec-10-2002 |
A method and apparatus are described for inserting a watermark in the compressed domain. The watermark inserted does not require a reference. An overall watermarking system incorporating the invention... |
| 6404898 |
Method and system for encoding image and audio content |
| Jun-11-2002 |
Image or audio content data is encoded to steganographically convey plural bit auxiliary data. The content data is thereafter subjected to lossy compression/decompression, and the auxiliary data can still... |
| 6359999 |
Method of adding information to video signal and information adding device |
| Mar-19-2002 |
When a spectrally spread additional information signal, obtained by spectrum spreading additional information such as an anti-duplication control signal or copyright information, is superimposed on a video... |
| 6314409 |
System for controlling access and distribution of digital property |
| Nov-6-2001 |
A method and device are provided for controlling access to data. Portions of the data are protected and rules concerning access rights to the data are determined. Access to the protected portions of the... |
| 6292569 |
Systems and methods using cryptography to protect secure computing environments |
| Sep-18-2001 |
Secure computation environments are protected from bogus or rogue load modules, executables and other data elements through use of digital signatures, seals and certificates issued by a verifying authority.... |
| 6275939 |
System and method for securely accessing a database from a remote location |
| Aug-14-2001 |
A secure client/server system allows remote access to a database system without allowing unauthorized users to access data stored within the database system. A server receives a request for data from a... |
| 6260143 |
Host-based caching method and system for copy protected content |
| Jul-10-2001 |
A method and system of read-ahead caching for use in a DVD player utilizing CSS titles is disclosed. The caching system is a host-based read-ahead caching system that utilizes a threaded architecture for... |
| 6253027 |
System, method and article of manufacture for exchanging software and configuration data over a multichannel, extensible, flexible architecture |
| Jun-26-2001 |
Secure transmission of data is provided between a plurality of computer systems over a public communication system, such as the Internet. Secure transmission of data is provided from a customer computer... |
| 6240186 |
Simultaneous bi-directional translation and sending of EDI service order data |
| May-29-2001 |
A method and apparatus for performing bi-directional data transfer operations over a global computer network are provided. This is accomplished by extracting data from a database stored on a first computer... |
| 6223286 |
Multicast message transmission device and message receiving protocol device for realizing fair message delivery time for multicast message |
| Apr-24-2001 |
A multicast message transmission device and a message receiving protocol device for guaranteeing a fair message delivery time for a multicast message. At the receiving protocol device, a release time of... |
| 6212636 |
Method for establishing trust in a computer network via association |
| Apr-3-2001 |
A method is disclosed for establishing trusted communications with associations for communications between users on an Internet Protocol based computer network. The method entails the first user's SNIU... |
| 6208738 |
Interface between two proprietary computer programs |
| Mar-27-2001 |
A method and system for accelerating an integral evaluation program using the Monte Carlo evaluation by sequence generation program without disclosing the internal workings and functionality of the programs.... |
| 6178409 |
System, method and article of manufacture for multiple-entry point virtual point of sale architecture |
| Jan-23-2001 |
A server communicates bidirectionally with a gateway over a first communication link, over which service requests flow to the server for one or more merchants and/or consumers. Service requests are associated... |
| 6175625 |
Control circuits for electric coding machines |
| Jan-16-2001 |
The machine involves code wheels in cascade or in a maze with random or mixed circuits which operate a printing device to print the cipher conjugate of the letter on an operated key when the keyboard is... |
| 6167513 |
Mobile computing scheme using encryption and authentication processing based on mobile computer location and network operating policy |
| Dec-26-2000 |
A mobile computing scheme capable of carrying out a proper packet transfer according to a current location of the mobile computer by accounting for the network operating policy. A mobile computer carries... |
| 6158004 |
Information storage medium and security method thereof |
| Dec-5-2000 |
A security system for an information storage medium is so structured that only file data including secret individual information is encrypted by an encryptor/decryptor circuit. Known file management data... |
| 6157721 |
Systems and methods using cryptography to protect secure computing environments |
| Dec-5-2000 |
Secure computation environments are protected from bogus or rogue load modules, executables and other data elements through use of digital signatures, seals and certificates issued by a verifying authority.... |
| 6157722 |
Encryption key management system and method |
| Dec-5-2000 |
The invention relates to an encryption key management system and method of securely communicating data. First and second communicating devices are provided with a first and second identical sequences or... |
| 6154541 |
Method and apparatus for a robust high-speed cryptosystem |
| Nov-28-2000 |
A cryptographic information and communication system of the knapsack type characterized by secret logical segregation of the key sets into sections by different construction methods, where different transformations... |
| 6148364 |
Method and apparatus for cascading content addressable memory devices |
| Nov-14-2000 |
A method and apparatus for cascading content addressable memory (CAM) devices is disclosed. The method and apparatus may be particularly useful when depth cascading CAM devices that operate in a flow-through... |
| 6148175 |
Audio entertainment system |
| Nov-14-2000 |
An entertainment system (100, 100', 100") is provided which includes a plurality of remote stations (110, 110'). Each of the remote stations includes a microphone (118), a transmit section (112b), a receive... |
| 6141756 |
Apparatus and method of reading a program into a processor |
| Oct-31-2000 |
The following describes an apparatus for and method of providing a secure method of downloading a program into a processor (101) from a device (103) external to the processor (101). The program may be... |
| 6134631 |
Non-volatile memory with embedded programmable controller |
| Oct-17-2000 |
Computer systems may be provided with additional performance for demanding applications while adding little additional hardware. For example, a slave device for a host computer system combines an embedded... |
| 6131161 |
Marking a digitally encoded video and/or audio signal |
| Oct-10-2000 |
An electronic watermarking scheme is proposed that can significantly increase the security of copy protection mechanisms. The watermarking methods works at high level in the hierarchy of the (MPEG) source... |
| 6130946 |
Cryptographs |
| Oct-10-2000 |
The cryptographic system automatically and continuously changes the cipher equivalents representing plaintext characters so as to prevent any periodicity in the relationship. The system has a series of... |
| 6125186 |
Encryption communication system using an agent and a storage medium for storing that agent |
| Sep-26-2000 |
An agent is permanently resident in a server as software for the purpose of cryptographic processing. In addition, another agent that is described in mobile code and contains a program for the purpose... |
| 6122376 |
State synchronized cipher text scrambler |
| Sep-19-2000 |
A state synchronized cipher text scrambler is disclosed. The state synchronized cipher text scrambler enables multiple data streams to be scrambled in parallel in such a way that the data streams are uncorrelated... |
| 6119110 |
Measuring device, particularly for fuel pumps |
| Sep-12-2000 |
Measuring device, particularly for fuel pumps in service stations, comprising a pulser equipped with a microprocessor unit and an electronic head equipped with a microprocessor unit, in which device the... |
| 6115816 |
Optimized security functionality in an electronic system |
| Sep-5-2000 |
An electronic system with security functionality that optimizes performance of the electronic system during cryptographic operations. In one embodiment, the electronic system includes a chipset having... |
| 6108784 |
Encryption of applications to ensure authenticity |
| Aug-22-2000 |
A software application is modified in a defined manner to prevent it being executable by a processor until the modified software application is decoded. Preferably, a sum of all of the bytes comprising... |
| 6101255 |
Programmable cryptographic processing system and method |
| Aug-8-2000 |
A programmable crypto processing system (10) includes several processing resources (14, 16, 26) implemented on a single ULSI die. The processing system is both key and algorithm agile allowing for simultaneous... |
| 6097812 |
Cryptographic system |
| Aug-1-2000 |
The crytographic system automatically and continuously changes the cipher equivalents representing plaintext characters so as to prevent any periodicity in the relationship. The system has a series of... |
| 6079021 |
Method and apparatus for strengthening passwords for protection of computer systems |
| Jun-20-2000 |
A computer implemented method provides access to processes and data using strengthened password. During an initialization phase, an access code is stored in a memory of a computer system. The access code... |
| 6061454 |
System, method, and computer program for communicating a key recovery block to enable third party monitoring without modification to the intended receiver |
| May-9-2000 |
A method is disclosed for communicating a key recovery block from a sender to a non-enabled receiver, without the danger of throwing the receiver into an indeterminant state, and without modifying the... |
