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Document Title |
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7568223 |
Internet protocol telephony security architecture
A secure Internet Protocol (IP) telephony system, apparatus, and methods are disclosed. Communications over an IP telephony system can be secured by securing communications to and from a Cable...
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7522727 |
Method and apparatus for providing authentication in a communication system
A method includes receiving an authentication request from a mobile station ( 401 ) and determining whether to forward the request to an authentication agent. When it is determined to forward the...
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7418598 |
Architecture of an encryption circuit implementing various types of encryption algorithms simultaneously without a loss of performance
An encryption circuit for simultaneously processing various encryption algorithms, the circuit being capable of being coupled with a host system hosted by a computing machine. The circuit comprises...
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7325250 |
Method and apparatus for preventing radio communication system access by an unauthorized modem
A method and apparatus for preventing radio communication system access by an unauthorized modem. The apparatus comprises a signal detector that determines if an authorization signal has been...
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7308103 |
Power line communication device and method of using the same
The repeater of the present invention communicates data signals over power lines. The repeater of one embodiment includes at least one modem that receives a data packet and attempts to decrypt the...
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7231045 |
Secure transaction modem storing unique indicia
A modem and secure communications method for the modem is disclosed in which the modem is capable of storing identifying indicia unique to the modem. The identifying indicia may include graphics...
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7206933 |
Software modem with privileged mode driver authentication
A computer system includes a peripheral device and a processing unit. The processing unit is adapted to execute a driver for interfacing with the peripheral device in a standard mode of operation...
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7197768 |
Software modem for communicating data using encrypted data and unencrypted control codes
A communications system includes a physical layer hardware unit and a processing unit. The physical layer hardware unit is adapted to communicate data over a communications channel. The physical...
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7123719 |
Method and apparatus for providing authentication in a communication system
A method includes receiving an authentication request from a mobile station ( 401 ) and determining whether to forward the request to an authentication agent. When it is determined to forward the...
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7096353 |
Software modem with privileged mode decryption of control codes
A communications system includes a physical layer hardware unit and a processing unit. The physical layer hardware unit is adapted to communicate data over a communications channel in accordance...
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7061985 |
Universal modulator/demodulator
A modulation/demodulation device capable of operating with several types of modulation using different carrier frequencies may include a modulator which modulates at least one signal by a signal of...
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6961431 |
Analog privacy scrambler and scrambling method
A system and method for maintaining privacy in transmission of a high bandwidth analog signal. A preferred system and method breaks an input signal into bands and then uses Walsh codes to overlay...
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6947968 |
Communication apparatus and method
Provided is a communication apparatus capable of affording an equivalent level of security for both facsimile transmission and electronic mail without the user needing to be aware of the difference...
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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...
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6859650 |
Mobile device, chip card and method of communication
A mobile apparatus includes a removable SIM chip card having data-processing means intended among other things for storing identification data of a subscriber in a GSM mobile radio network. The...
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6856686 |
Method and apparatus for securing e-mail attachments
In accordance with a first aspect, a method for operating an electronic device adapted to be electronically coupled to at least one microprocessor based device and prevent unauthorized access to...
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6715079 |
Method and system for soft modem protection
The present invention is a system and method for soft modem software protection using a key. The key is stored in a hardware device in the modem subsystem and transmitted to the central processing...
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6681016 |
System for transfer of secure mission data
An information processor is installed onboard a seagoing vessel that has at least one onboard system, e.g., a weapon system, to carry out a mission that is defined by instructions originating at a...
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6496107 |
Voice-controlled vehicle control system
A vehicle control system for permitting voice control of at least one device in a vehicle by at least one user includes a radio transponder unit which outputs an RF signal which includes an...
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6430691 |
Stand-alone telecommunications security device
A method for selectively encrypting electronically communicated information including the steps of: in a first mode, allowing audio and facsimile signals to pass between communications devices in a...
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6243468 |
Software anti-piracy system that adapts to hardware upgrades
An anti-piracy system reduces the opportunity for piracy and illicit use of software products by requiring each software product to be registered for a single computer. If a user attempts to...
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6181735 |
Modem equipped with a smartcard reader
The invention relates to modems designed to allow transmission of data between a terminal (a personal computer or PC) and a network. To improve the operating versatility of a modem or its...
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6075863 |
Intelligent communication device
A communication device is provided that is controlled through the use of small programs or applets that are executed by a processor within the device. The applets are encoded as a sequence of...
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6049826 |
Method and system for cable modem initialization using dynamic servers
A method and system for initializing cable modems with dynamic protocol servers is provided. The method and system allow a dynamic protocol server such as a dynamic Trivial File Transfer Protocol...
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5978481 |
Modem compatible method and apparatus for encrypting data that is transparent to software applications
A method and apparatus for transmitting encoded data from one computer system to another using an AT command set compatible communication device is described. Data being sent from a communications...
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5835603 |
Financial transaction system
A home banking system comprises a video games entertainment console 10 having a processor 12, a display driver 14, connection means 16 for connection to a television set 17, and an input/output...
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5818937 |
Telephone tone security device
An encryption device. A user wishes to identify himself to a remote party, over a telephone line. The remote party provides a Transaction Number, TN, to the user. The TN is given to the encryption...
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5621800 |
Integrated circuit that performs multiple communication tasks
An integrated circuit that provides multiple communication functions is accomplished by providing an integrated circuit (24) that includes memory (70) which stores an audio code algorithm, echo...
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5594798 |
Secure telecommunications
A security node disposed in the telecommunications network connecting calling and called parties transforms information (which can be voice, data, facsimile, video and other types of calls or...
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5517569 |
Methods and apparatus for interfacing an encryption module with a personal computer
An encryption module for encrypting financial and other sensitive data may be conveniently interposed in series between a personal computer and the keyboard associated therewith. An application...
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5455861 |
Secure telecommunications
A security node disposed in the telecommunications network connecting calling and called parties transforms information (which can be voice, data, facsimile, video and other types of calls or...
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5412730 |
Encrypted data transmission system employing means for randomly altering the encryption keys
A modem suitable for transmitting encrypted data over voice-grade telephone line. The modem is implemented by the combination of integrated circuit components including a microprocessor, a serial...
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5410599 |
Voice and data encryption device
A portable voice and data encryption device designed to be used with normal wideband telephone and cellular telephones, computers and facsimile machines to transmit voice and data in encrypted...
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5369703 |
Command and control signalling method and apparatus
A local communication apparatus (e.g., a modem) is arranged to detect when a remote communication apparatus desires to switch from the data mode and enter a command/control mode. To accomplish mode...
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5311596 |
Continuous authentication using an in-band or out-of-band side channel
A re-authentication procedure between the modems of a public switched telephone network (PSTN) data connection, which is between a computer facility and a user, provides a secure method for...
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5253293 |
Adaptive data ciphering/deciphering apparatuses and data communication system using these apparatuses
A data communication system adaptable to a ciphered data communication includes a data transmission line (3) for transmitting ciphered or non-ciphered data between a data transmitting device and a...
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5241596 |
Facsimile apparatus, and method of controlling same
A facsimile apparatus is disclosed in which a transmitting/receiving operation, as well as a copying operation, is performed by an operator in exactly the same manner regardless of whether an...
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5222136 |
Encrypted communication system
A system for exchanging encrypted data between selected devices at stations comprising a network. The system includes an encrypted communications device (ECOM) (12) that selectively encrypts data...
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5166977 |
Protocol converter for a secure FAX transmission system
A secure facsimile interface includes a main CPU (30) having associated therewith a bulk memory (32) for storing transfer data between a Group 3 facsimile machine (20) and a secure...
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5146472 |
Method for imbedding information in modem handshake procedure and modems incorporating the same
Methods for embedding additional information (e.g. a password function) in a handshake of communicating modems is provided. An auxiliary packet containing the additional information is placed in...
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5131025 |
Intelligent modem system which determines proper access thereto
An intelligent modem system which is used for connecting an information processing terminal such as a microcomputer with a public communication line by modulating and demodulating the data...
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5056137 |
Method and apparatus for encoding and decoding signals
In a method and apparatus for encoding signals, signals are passed through a body of a material that modifies a characteristic of signals passing therethrough, such as an acousto-electromagnetic....
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5054069 |
Apparatus for scrambling/descrambling data by word-by-word processing
A scrambling/descrambling apparatus has a data memory for storing a data word, a bit invert flag, and numerical data. A bit shift operating section performs, on receiving a bit of data to be...
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5001750 |
Secret communication control apparatus
A secret communication control apparatus used to effect secret communication with communication equipment, for example, facsimile equipment, which transmits picture information by use of public...
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4985919 |
Secure communication control system
Encoder/decoders are associated with conventional local and far-end communications equipment such as facsimile machines. Information to be faxed is encoded at one end, transmitted to the other end,...
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4981371 |
Integrated I/O interface for communication terminal
An integrated I/O interface for a communication terminal, connectable with an external analog communication device and with an external digital communication device, includes an I/O interface...
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4972470 |
Programmable connector
A configurable connector between two or more devices with at least one of the devices being capable of programming the connector through an interface therewith. The connector contains programmable...
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4953210 |
Feature negotiation protocol for a synchronous modem
A method for feature negotiations between two synchronous modems. To engage in negotiations a modem must be configured to support synchronous operation, a data transfer rate of at least 4800 bits...
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4924516 |
Method and system for a synchronized pseudo-random privacy modem
A method and system for a synchronized pseudorandom privacy modem makes use of a pseudorandom signal generator to index into a table of N signal spaces thereby altering gain and phase modifiers so...
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4922534 |
Intelligent synchronous modem and communication system incorporating the same
An intelligent synchronous modem and data communication systems utilizing the intelligent synchronous modem are provided. The modem comprises: at least one connector having a first and a second...
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