Dialogic style RF guidance system for a visually handicapped per

Details Dialogic style RF guidance system for a visually handicapped per Dialogic style RF guidance system for a visually handicapped per

1997-01-15

2000-08-01

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082569, 340665, 34082549, H04Q 100

Patent

active

060973056

ABSTRACT:
The dialogic style RF guidance system comprises multiple stationary base-sets established at the destination and the hand-held apparatus carried along by the visually handicapped people. This provides safe and efficient guidance to visually handicapped people in reaching their destinations, and more conveniently communicates with the base-set and simultaneously receives the message from the base-set through the microphones or external speakers.

REFERENCES:
patent: 4194194 (1980-03-01), Redfern
patent: 4253083 (1981-02-01), Imanara
patent: 4660022 (1987-04-01), Osaka
patent: 5032836 (1991-07-01), Ono
patent: 5144294 (1992-09-01), Alonzi
patent: 5461371 (1995-10-01), Matsumoto
patent: 5623248 (1997-04-01), Min
patent: 5754115 (1998-05-01), Woo

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