Hearing assist telephone

Telephonic communications – Including aid for handicapped user

Patent

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Details

379375, 379376, 379395, 379396, H04M 122, H04M 160

Patent

active

049264591

ABSTRACT:
A telephone set adapted for use by hearing impaired and visually impaired persons is disclosed in which the frequency response of audio signals produced from the handset receiver of the telephone is shaped to have enhanced high-frequency characteristics. The telephone is further provided with indicator lights which flash in conjunction with the telephone's electronic ringer to indicate an incoming telephone call. An array of light-emitting diodes is disposed beneath a dialer keypad to facilitate viewing of the dialing buttons in darkened environments. The dialer keypad's buttons are of an enlarged size, so that they may be more easily used by persons with impaired vison or motor skills.

REFERENCES:
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patent: 2283098 (1942-05-01), Shann
patent: 3739105 (1973-06-01), Anson
patent: 3927282 (1975-12-01), Firstenberg
patent: 4151376 (1979-04-01), Walker, Jr.
patent: 4160122 (1979-07-01), Jacobson
patent: 4324954 (1982-04-01), Taylor
patent: 4349705 (1982-09-01), Kuhfus
patent: 4379210 (1983-04-01), Sparber
patent: 4466120 (1984-08-01), Walker, Jr. et al.
patent: 4491692 (1985-01-01), Lee
patent: 4532382 (1985-07-01), Pommer, II
patent: 4578542 (1986-03-01), Alderman
patent: 4596899 (1986-06-01), Wojcik et al.
patent: 4679231 (1987-07-01), Reichle
patent: 4764957 (1988-08-01), Angelini et al.
patent: 4773088 (1988-09-01), Matheny
Arlev et al., "Electronic Push-Button Telephone with Tone Ringer and Listening-In", Teleteknik (Denmark) (Engl. Ed.), vol. 23, No. 1, 1979, pp. 1-18.

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