Security system for data communications
First Claim
1. A security system for a computer system having a host computer and a plurality of user terminals, said system comprisinga transponder for disposition at one user terminal location, said transponder including first means for receiving an analog signal corresponding to at least one spoken word from a prospective user of the terminal at said one remote location, second means for converting said analog signal to a digital signal, a memory device for storing at least a portion of said digital signal, a signal compressor for receiving and reducing said digital signal to a compressed signal of a predetermined number of bytes, at least one speech template for storing said compressed signal and an encrypter/decrypter for receiving and encrypting said compressed signal;
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0 Petitions
Accused Products
Abstract
A modem security communication system for providing access to a computer system having a host computer and a central access controller located at a host location, and user terminals with transponders at a plurality of remote locations. The modem security communication system also includes at least one modem at each of the host and remote locations for interaction with the host computer and transponder, respectively. The transponder is arranged to receive a spoken word from a computer user whereby an analog signal is converted to a digital signal, compressed, encrypted, and transmitted to the host location where it is decrypted and compared with a stored signal on a voiced template corresponding to an identified user'"'"'s voice. The system further provides for initial communication between the transponder and the host controller to sustain the communication link. This communication may also be encrypted for security. The system also provides for the voice templates to be updated with each authorized access to the computer system.
163 Citations
27 Claims
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1. A security system for a computer system having a host computer and a plurality of user terminals, said system comprising
a transponder for disposition at one user terminal location, said transponder including first means for receiving an analog signal corresponding to at least one spoken word from a prospective user of the terminal at said one remote location, second means for converting said analog signal to a digital signal, a memory device for storing at least a portion of said digital signal, a signal compressor for receiving and reducing said digital signal to a compressed signal of a predetermined number of bytes, at least one speech template for storing said compressed signal and an encrypter/decrypter for receiving and encrypting said compressed signal; - and
a controller for disposition at the computer for receiving an encrypted compressed signal from said transponder, said controller including an encrypter/decrypter for decrypting said encrypted compressed signal to a usable compressed signal, a controller memory for receiving and storing said portion of said digital signal and a voice verification unit for comparing said usable compressed signal with said stored portion of said digital signal and permitting access to said host computer in response to said stored portion of said digital signal being identical to said usable compressed signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computer system comprising
a host computer at a host location; -
a plurality of user terminals disposed at remote locations from said host computer; a plurality of transponders, each transponder being connected with a respective user terminal at a respective remote location for receiving and processing spoken words into a signal to gain access to said host computer; a plurality of modems, each modem being connected to a respective transponder at a respective remote location to receive and transmit said signal therefrom; a modem at said host location for receiving said signals from said modems at said remote locations; and a controller connected to and between said modem and said host computer at said host location for receiving and processing said signals to permit access to said host computer.
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11. A transponder for a security system comprising
first means for receiving an analog signal corresponding to at least one spoken word from a prospective user of the terminal at said one remote location; -
second means for converting said analog signal to a digital signal; a memory device for storing said digital signal; a signal compressor for receiving and reducing said digital signal to a compressed signal of a predetermined number of bytes; and an encrypter/decrypter for receiving and encrypting said compressed signal.
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12. A controller for a security system comprising
a decrypter for decrypting a received encrypted compressed signal corresponding to at least one spoken word from a prospective user of a host computer; -
a controller memory for storing a digital signal; and a speech verification unit for comparing said decrypted compressed signal with said stored digital signal and permitting access to the host computer in response to said decrypted compressed signal being comparable to said stored digital signal.
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13. A signal compressor for a security system comprising
first means for receiving a digital signal corresponding to at least one spoken word from a designated user of a user terminal at one remote location; -
second means for reducing said digital signal to a consistent compressed signal comprised of a predetermined number of bytes in a predetermined order; and third means for passing said compressed signal to an encryption device. - View Dependent Claims (14)
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15. A method to secure communication between a host computer at a host location and at least one terminal at a remote location, said method comprising the steps of
generating a digital signal at said remote location corresponding to an orally generated speech pattern of a prospective user; -
storing said digital signal in a first memory device; compressing said signal to a compressed signal; encrypting said compressed signal; receiving said encrypted compressed signal at said host location; decrypting said encrypted compressed signal at said host location to form a usable compressed signal; comparing said usable compressed signal with said stored signal at said host location to permit access to the host computer in response to said usable compressed signal matching with said stored signal. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification