Telephonic communications – Including aid for handicapped user
Patent
1993-10-04
1995-10-10
Chan, Wing F.
Telephonic communications
Including aid for handicapped user
379 96, 379 97, H04M 1100
Patent
active
054577314
ABSTRACT:
An emergency telecommunication system for the hearing or speech impaired includes an interface electrically connecting the emergency system to a telephone communication system, a programmable gate array, a keyboard connected to the programmable gate array, a register connected to the programmable gate array for storing at least one telephone number of the telephone communication system, and a graphic display device connected to the programmable gate array and to the register. The system also includes devices for receiving and transmitting signals in ASCII format, Baudot format, and DTMF signals, and for receiving and transmitting normal voice communications simultaneously with one of the ASCII and Baudot format and DTMF signals. Switches selectively connect each of the receiving and transmitting devices in independent receiving and transmitting modes between the interface and the programmable gate array. A computer connected between the interface and the programmable gate array detects incoming signals to the interface, distinguishes whether the incoming signals are in ASCII format, Baudot format or audio tone and connects the receiving mode of one of the receiving and transmitting devices corresponding to the distinguished signal between the interface and the programmable gate array. The computer further permits variation of the volume of the audio tone signals and display of a visual message corresponding to the incoming signal. At least one outgoing message is transmittable to a telephone number stored in the register.
REFERENCES:
patent: 3896267 (1975-07-01), Sachs et al.
patent: 4012599 (1977-03-01), Meyer
patent: 4075621 (1978-02-01), Salmon
patent: 4191854 (1980-03-01), Coles
patent: 4268721 (1981-05-01), Nielson
patent: 4471165 (1984-09-01), DeFino et al.
patent: 4492820 (1985-01-01), Kennard
patent: 4650927 (1987-03-01), James
patent: 4689811 (1987-08-01), Lennstrom
patent: 4754474 (1988-06-01), Feinson
patent: 4777469 (1988-10-01), Engelke
patent: 4918721 (1990-04-01), Hashimoto
patent: 4959847 (1990-09-01), Engelke
patent: 5081673 (1992-01-01), Engelke et al.
patent: 5086450 (1992-02-01), Kitagawa et al.
patent: 5163081 (1992-11-01), Wycherley et al.
patent: 5253285 (1993-10-01), Alheim
Catalano Frank J.
Chan Wing F.
Zingerman Scott R.
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