U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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Swann, Tod R.


Primary examiner statistics: 1588 patents; average approval time: 886 days
Assistant examiner statistics: 202 patents; average approval time: 781 days

Patents as Primary Examiner

1                      
NumberTitleIssue Date
6859534Digital anti-counterfeiting software method and apparatus
This invention relates generally to a method and apparatus, as implemented by a software program on a computer system, for digitally producing counterfeit-deterring scrambled or coded indicia images, typically in a printed form. This method and system are capable of...
02/22/2005
6408076Digital video broadcasting
In order to descramble sections of scrambled data interleaved with sections of unscrambled data in a transport stream of broadcast video data, while leaving the sections with the original timing relationship in the transport stream, a common data flow pat...
06/18/2002
6408388Personal date/time notary device
A personal data/time notary device is embodied in a token device such as a "smart card". The portable notary device includes an input/output (I/O) port, which is coupled to a single integrated circuit chip. The I/O port may be coupled to a conventional sm...
06/18/2002
6396927Variable density verification
A counterfeit-resistant document comprises a contrasting layer and a dynamic camouflaging layer. The contrasting layer is highly contrastive and includes a latent message that can be reproduced over a broad range of copy device control settings. The dynam...
05/28/2002
6385710Multiple-mode external cache subsystem
In accordance with the present invention, a cache memory subsystem includes a processor, a cache control unit and a SRAM serving as the cache memory. The SRAM is a synchronous SRAM. The cache control unit provides appropriately timed control signals to th...
05/07/2002
6374122Method and apparatus for supporting expanded electronic serial number (EESN) format
A 32 bit digital "amended electronic serial number" (AESN) is generated from a 56 bit "extended electronic serial number" (EESN). The AESN distinguishes each subscriber unit within a wireless system from each other subscriber unit. Two distinct methods ar...
04/16/2002
6363478Security mechanisms in a web server
A session processing module for a server is adapted to communicate across the Internet with a plurality of clients. The processing module runs within a servlet and allocates a session identifier in response to a first input stream of a session between a c...
03/26/2002
6357007System for detecting tamper events and capturing the time of their occurrence
A system for monitoring tamper events in a computer system is disclosed. The computer system is on a network. The system comprises a tamper real time clock (RTC) means which receives at least one tamper event signal from the computer system. The tamper RT...
03/12/2002
6345099System and method for copy protecting computer graphics
Copy protection is provided for the now-unprotected computer monitor port of a computer 100 in two ways: (i) delaying synchronizing signals by a time variable amount and (ii) generating pulses during non-active video. Delay of the synchronizing signal is ...
02/05/2002
6335972Framework-based cryptographic key recovery system
A Secure Key Management Framework (SKMF) defines an infrastructure for a complete set of cryptographic services augmented with key recovery enablement. There are three major layers--the application layer invokes the SKMF layer, while the SKMF layer invoke...
01/01/2002
6317832Secure multiple application card system and process
A secure multiple application card system and process is provided having secure loading and deleting capability by use of a Certification Authority and Personalization Bureau. The certification authority maintains the security of the system by requiring I...
11/13/2001
6314519Secure messaging system overlay for a selective call signaling system
A secure messaging system (900) generates a secure financial transaction message. A wireless selective call signaling system controller (102) receives the secure financial transaction message as a selective call message request including a destination ide...
11/06/2001
6314521Secure configuration of a digital certificate for a printer or other network device
The system, method, and program of this invention provides a secure configuration of a digital certificate for a printer. The printer has a unique encryption key stored in it at manufacturing time. This key is also recorded in a database, securely control...
11/06/2001
6311269Trusted services broker for web page fine-grained security labeling
Arbitrarily fine-grained limitation of access to information stored in a resource of a data processor network is provided in a manner compatible with existing network browsers by mapping user identity and credentials with randomly assigned security cookie...
10/30/2001
6311170Method and apparatus for making payments and delivering payment information
When characterized as an improved method of making payments from a plurality of payor entities to a plurality of payee entities through a service provider, a number of method steps which will now be described. First, authorization is obtained from a plura...
10/30/2001
6310957Method and apparatus for interdicting cable television channels
Apparatus for interdicting television channels of a cable television system comprises a plurality of oscillators dedicated to jamming the audio portion of television channels to be interdicted, and a further plurality of different oscillators dedicated to...
10/30/2001
6304658Leak-resistant cryptographic method and apparatus
The present invention provides a method and apparatus for securing cryptographic devices against attacks involving external monitoring and analysis. A "self-healing" property is introduced, enabling security to be continually re-established following part...
10/16/2001
6304974Method and apparatus for managing trusted certificates
The present invention provides a system for managing trusted certificates for authenticating communications for clients belonging to an enterprise. The system assembles a list of trusted certificates containing public keys for authenticating communication...
10/16/2001
6301661Enhanced security for applications employing downloadable executable content
Method and computer network for enhanced security for applications using downloadable executable content is described. More particularly, a client is operatively coupled to an authentication server and a remote host through a gateway. In an initial login ...
10/09/2001
6301363Security document including subtle image and system and method for viewing the same
A system for viewing a subtle image on a security document is provided including a security document, a document viewer, and a document receiving station. The security document comprises a subtle image and a security image formed on a first face of the se...
10/09/2001
6298441Secure document access system
A method for downloading a document via a communications medium operatively associated with a communications interface, the method including receiving the document from the communications medium, placing an information storage smart card in removable oper...
10/02/2001
6298138Optical 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
Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an...
10/02/2001
6298137Ring-based public key cryptosystem method
A method of communicating information between users of a communications system includes the following steps: generating a ring R, ideals P and Q in R, a set of coset representatives CQ for the ring R modulo the ideal Q, and a set of coset repre...
10/02/2001
6295604Cryptographic packet processing unit
A cryptographic packet processing unit performing cryptographic operations on a data portion of a data packet based on control information included in a header of the data packet. The cryptographic packet processing unit comprises a cryptographic bus inte...
09/25/2001
6295361Method and apparatus for multicast indication of group key change
A method and apparatus to allow a key manager node in a network to initiate the process of changing a group key for all nodes in a multicasting group. In the described embodiment, the key manager node initiates changing the group key by setting an indicat...
09/25/2001
6292896Method and apparatus for entity authentication and session key generation
A system for authenticating a first entity to a second entity and for simultaneously generating a session key for encrypting communications between the entities. The first entity generates an authentication value by encrypting time-dependent information u...
09/18/2001
6292899Volatile key apparatus for safeguarding confidential data stored in a computer system memory
The data security system uses a volatile key apparatus to create and manage a master file, comprising a single encrypted file that is stored on the hard drive of the computer system. The master file contains all of the passwords, cryptokeys and security c...
09/18/2001
6292893Certificate revocation system
A certification revocation system uses a one-way function F to verify the validity of a certificate that includes a first value V. Included are means for receiving a second value V' and means for iterating F on V' and for comparing the result thereof to V...
09/18/2001
6289103Signal reproducing/recording/transmitting method and apparatus and signal record medium
A signal reproducing apparatus for prohibiting copying or unauthorized use. The apparatus includes a copying management information decision circuit 19 for discriminating the state of the copying management information read out from each header of a data ...
09/11/2001
6289455Method and apparatus for preventing piracy of digital content
A secure cryptographic rights unit for cryptographically regulating access to digital content includes an interface control processor and a specialized cryptographic unit that protects access to a memory. Rights keys, which allow access to content, are ad...
09/11/2001
6285764Optical 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
Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an...
09/04/2001
6286098System and method for encrypting audit information in network applications
A system and method for auditing network applications captures transmissions during a user session between a client and a server. An auditor capture filter captures each request from the client and each response by the server to each request. An auditor e...
09/04/2001
6285762Optical disk, optical disk barcode forming method, optical disk reproduction apparatus, marking forming apparatus, method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk
An optical disk includes a first area where data is recorded with pit pattern, a second information area where another data is recorded with marks which have a stripe-like configuration, and a guard band area formed between the first information area and ...
09/04/2001
6282290High speed modular exponentiator
A modular exponentiator is adapted to receive a first communicated signal and derive a second signal therefrom by computation of a modular exponentiation of the form be mod n based on the first signal. The modular exponentiator divides the modu...
08/28/2001
6282650Secure public digital watermark
A cryptographic device and corresponding method for producing a cloaked watermark which is a private watermark having the functionality of a public watermark. In one embodiment, the cryptographic device comprises an internal memory and a processor contain...
08/28/2001
6282291Method and apparatus for encrypting input bit sequence
An output bit sequences is derived from an initial bit sequence and this output bit sequence is used to encrypt an input bit sequence in a first mode of operation or not to so encrypt the input bit sequence in a second mode of operation. The mode of opera...
08/28/2001
6282651Security system protecting data with an encryption key
Proprietary information such as programs and/or data are protected using a secure processing system that includes a memory such as an EPROM in which the proprietary information is stored in a first portion of the memory. The stored information is encrypte...
08/28/2001
6278783Des and other cryptographic, processes with leak minimization for smartcards and other cryptosystems
Methods and apparatuses are disclosed for improving DES and other cryptographic protocols against external monitoring attacks by reducing the amount (and signal-to-noise ratio) of useful information leaked during processing. An improved DES implementation...
08/21/2001
6275810Method for scheduling holidays in distributed computer enterprise locales
A scheduling method operative in association with a display device of a data processing system connected in a distributed computing environment having nodes located across geographically-dispersed boundaries. The method begins by defining a set of holiday...
08/14/2001
6275585Method for reprogramming a vehicle system or a user system in a vehicle
A communication system (100) includes an infrastructure (150) and at least one vehicle (101), the vehicle including at least one vehicle system (103), and at least one user system (113). The infrastructure includes an application (155) which, in turn, is ...
08/14/2001
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