Communications: electrical – Tactual indication – With input means
Patent
1977-04-04
1978-10-10
Claffy, Kathleen H.
Communications: electrical
Tactual indication
With input means
35 35A, 179 91R, 250239, 340321, G09B 2100, G06K 714
Patent
active
041198115
ABSTRACT:
An elongated manually manipulable housing contains a photocell at one end for sensing energy levels in the visible frequency spectrum causing said photocell to correspondingly change in electrical conductivity. A portable power source in the housing is coupled to the photocell to provide an electrical signal corresponding to the change in the photocell conductivity. A comparator circuit in the housing compares that signal with an adjustable reference signal to provide an output signal upon a predetermined ratio between the compared signals. A multivibrator circuit in said housing is coupled to said comparator circuit and to a vibration-generating means which produces signals preferably in the audible range, so that upon the occurrence of an output signal, a user discernible, either audible or tactile, vibratory signal is generated.
REFERENCES:
patent: 3229075 (1966-01-01), Palti
patent: 3229387 (1966-01-01), Linvill
patent: 3234337 (1966-02-01), Schuyler
patent: 3359425 (1967-12-01), Smith
patent: 3369228 (1968-02-01), Foster
patent: 3416241 (1968-12-01), Weitzner
patent: 3541706 (1970-11-01), Shapiro
patent: 3758782 (1973-09-01), Radford et al.
patent: 3826900 (1974-07-01), Moellering
patent: 3874097 (1975-04-01), Mauch et al.
patent: 3892974 (1975-07-01), Ellefson et al.
"Bell System Aid to the Blind"; Bell Labs. Record; Jan. 1957; pp. 30 and 31.
Moricca Larry S.
Utasi Joseph G.
Claffy Kathleen H.
Moricca Anthony C.
Myers Randall P.
LandOfFree
Photo-vibratory transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photo-vibratory transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photo-vibratory transducer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1767823