| 6961431 |
Analog privacy scrambler and scrambling method |
| Nov-1-2005 |
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 many... |
| 6947968 |
Communication apparatus and method |
| Sep-20-2005 |
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 between... |
| 6859650 |
Mobile device, chip card and method of communication |
| Feb-22-2005 |
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 mobile... |
| 6856686 |
Method and apparatus for securing e-mail attachments |
| Feb-15-2005 |
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 data exchanged... |
| 6856687 |
Portable telecommunication security device |
| Feb-15-2005 |
A portable security device for providing secure communications over a plurality of networks is presented. In one embodiment, the device comprises, at least one communication port for transfer of audio... |
| 6715079 |
Method and system for soft modem protection |
| Mar-30-2004 |
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 unit... |
| 6681016 |
System for transfer of secure mission data |
| Jan-20-2004 |
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 remote... |
| 6498851 |
Data encryption and signal scrambling using programmable data conversion arrays |
| Dec-24-2002 |
A scrambling or encryption method involves analog-to-digital, digital-to-analog, analog-to-analog or digital-to-digital conversions that are constructed from one or more analog-to-digital or digital-to-analog... |
| 6496107 |
Voice-controlled vehicle control system |
| Dec-17-2002 |
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 identification... |
| 6430691 |
Stand-alone telecommunications security device |
| Aug-6-2002 |
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 substantially... |
| 6243468 |
Software anti-piracy system that adapts to hardware upgrades |
| Jun-5-2001 |
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 install the... |
| 6181735 |
Modem equipped with a smartcard reader |
| Jan-30-2001 |
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 utilization by... |
| 6075863 |
Intelligent communication device |
| Jun-13-2000 |
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 instructions... |
| 6049826 |
Method and system for cable modem initialization using dynamic servers |
| Apr-11-2000 |
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 ("TFTP")... |
| 5978481 |
Modem compatible method and apparatus for encrypting data that is transparent to software applications |
| Nov-2-1999 |
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 application... |
| 5835603 |
Financial transaction system |
| Nov-10-1998 |
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 device... |
| 5835590 |
Method and apparatus for signal transmission and reception |
| Nov-10-1998 |
An apparatus and method for transmitting and receiving signals includes an analyzer, for decomposing an input signal into a plurality of signals with each one of the plurality of signals occupying one... |
| 5818937 |
Telephone tone security device |
| Oct-6-1998 |
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 device.... |
| 5805712 |
Apparatus and method for providing secured communications |
| Sep-8-1998 |
A semiconductor device used to store encryption/decryption keys at manufacture in combination with digital certificates to ensure secured communications between the semiconductor device and another device.... |
| 5778071 |
Pocket encrypting and authenticating communications device |
| Jul-7-1998 |
A portable security device is disclosed which can be carried by an individual and connected directly to telephone circuits to both authenticate that individual and encrypt data communications. The invention... |
| 5621800 |
Integrated circuit that performs multiple communication tasks |
| Apr-15-1997 |
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 cancellation... |
| 5594798 |
Secure telecommunications |
| Jan-14-1997 |
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 messages)... |
| 5517569 |
Methods and apparatus for interfacing an encryption module with a personal computer |
| May-14-1996 |
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 program... |
| 5455861 |
Secure telecommunications |
| Oct-3-1995 |
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 messages)... |
| 5412730 |
Encrypted data transmission system employing means for randomly altering the encryption keys |
| May-2-1995 |
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 communications... |
| 5410599 |
Voice and data encryption device |
| Apr-25-1995 |
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 form. The... |
| 5369703 |
Command and control signalling method and apparatus |
| Nov-29-1994 |
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 switching,... |
| 5335276 |
Communication system and methods for enhanced information transfer |
| Aug-2-1994 |
A communication system (20) is provided with multiple purpose personal communication devices (50 and 150). Each communication device (50 and 150) includes a touch-sensitive visual display (60 and 160)... |
| 5311596 |
Continuous authentication using an in-band or out-of-band side channel |
| May-10-1994 |
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 protecting... |
| 5253293 |
Adaptive data ciphering/deciphering apparatuses and data communication system using these apparatuses |
| Oct-12-1993 |
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 data... |
| 5241596 |
Facsimile apparatus, and method of controlling same |
| Aug-31-1993 |
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 encrypting... |
| 5222136 |
Encrypted communication system |
| Jun-22-1993 |
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 from... |
| 5166977 |
Protocol converter for a secure FAX transmission system |
| Nov-24-1992 |
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 encryptor/decryptor... |
| 5146472 |
Method for imbedding information in modem handshake procedure and modems incorporating the same |
| Sep-8-1992 |
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 the handshake... |
| 5131025 |
Intelligent modem system which determines proper access thereto |
| Jul-14-1992 |
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 transmitted... |
| 5056137 |
Method and apparatus for encoding and decoding signals |
| Oct-8-1991 |
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. Energy... |
| 5054069 |
Apparatus for scrambling/descrambling data by word-by-word processing |
| Oct-1-1991 |
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 outputted... |
| 5001750 |
Secret communication control apparatus |
| Mar-19-1991 |
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 communication... |
| 4985919 |
Secure communication control system |
| Jan-15-1991 |
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, and... |
| 4981371 |
Integrated I/O interface for communication terminal |
| Jan-1-1991 |
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 subsystem... |
| 4972470 |
Programmable connector |
| Nov-20-1990 |
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 electronic... |
| 4953210 |
Feature negotiation protocol for a synchronous modem |
| Aug-28-1990 |
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 per second,... |
| 4924516 |
Method and system for a synchronized pseudo-random privacy modem |
| May-8-1990 |
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 or to... |
| 4922534 |
Intelligent synchronous modem and communication system incorporating the same |
| May-1-1990 |
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 port for... |
| 4905282 |
Feature negotiation protocol and dynamically adjustable retraining sequence for a high speed half duplex modem |
| Feb-27-1990 |
A feature negotiation protocol for synchronous operation and a dynamically adjustable retraining sequence. An originating modem, after completing conventional or standard handshaking sequences, sends a... |
| 4817147 |
Intelligent synchronous modem and communication system incorporating the same |
| Mar-28-1989 |
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 port for... |
| 4763357 |
Method and apparatus for providing secure electronic communications |
| Aug-9-1988 |
A method and apparatus for providing secure electronic communications over a communications medium between first and second locations is disclosed. A data device for generating and/or receiving data is... |
| 4731840 |
Method for encryption and transmission of digital keying data |
| Mar-15-1988 |
A method for the encryption, transmission, and subsequent decryption of digital keying data. The method utilizes the Data Encryption Standard and is implemented by means of a pair of apparatus, each of... |
| 4626623 |
Method and apparatus for telephone access security |
| Dec-2-1986 |
The invention comprises a method and apparatus for providing secure access to a restricted access device, associated with a telephone answering unit at a first location from a second location across a... |
| 4581746 |
Technique for insertion of digital data bursts into an adaptively encoded information bit stream |
| Apr-8-1986 |
The present invention relates to a transmitter and a receiver for use in a digital communication system which are capable of transmitting and receiving, respectively, a single duplex analog signal channel,... |
