Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-11-20
1998-05-26
Negash, Kinfe-Michael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359149, 359187, 381172, 250214AL, H04B 1004
Patent
active
057575304
ABSTRACT:
Described are apparatus for transmitting light wave signals, the apparatus being capable of adjusting their signal strength to automatically adapt to changes in the ambient light conditions of their surrounding environment. In one embodiment, the apparatus for transmitting lightwave signals comprises (a) an emitter for sending a frequency modulated lightwave signal of variable intensity, (b) a light energy receiver for detecting a change in the level of surrounding ambient light energy and for producing a response to such change in proportion to the change detected, and (c) a controller for adjusting, directly or indirectly, the frequency modulated lightwave signal in response to the light energy receiver response to the change detected. Audio transmission systems employing apparatus of this invention are also described.
REFERENCES:
patent: 4648131 (1987-03-01), Kawaguchi et al.
patent: 4757303 (1988-07-01), Scheidweiler
patent: 4977619 (1990-12-01), Crimmins
patent: 5012086 (1991-04-01), Barnard
patent: 5027433 (1991-06-01), Menadier et al.
patent: 5095382 (1992-03-01), Abe
patent: 5359448 (1994-10-01), Laszlo et al.
patent: 5455702 (1995-10-01), Reed et al.
patent: 5495357 (1996-02-01), Osterhout
patent: 5596648 (1997-01-01), Fast
patent: 5623358 (1997-04-01), Madey
Talking Signs--Brochure--2 pp.--Undated.
Talking Signs, Inc.--"Overview" --1 p. and Accessible City Project, San Francisco--1 p.--All Undated.
Letter from City and County of San Francisco--1 p.--Dated Mar. 1, 1993.
Talking Signs, Inc.--"For Immediate Release" 1 p. Undated.
"Winning Solutions--1994 PTI Technology Achievement Awards" --Brochure--2 pp.--Undated.
Excerpt from San Francisco Examiner--Bill Mandel Column--1 p. --Present copy Undated.
Smith-Kettlewell Eye Research Institute, Bart & Muni--News Release--3 pp.--Sep. 9, 1994.
Article from the Urban Transportation Monitor--1 p.--Sep. 30, 1994.
Reprint from Identity Magazine--4 pp.--Reprinted from Mar./Apr. 1994 issue.
The Beach News, vol. 9, No. 2, p. 5 -1 p.--Jan. 12, 1995.
Excerpt from San Francisco Examiner--"New aid for the blind" --1 p.--Present copy Undated.
Newspaper article "Clearing way for the blind" --1 p.--Present copy Undated.
Apparent excerpt from Identity Magazine "A Light in the Darkness" --1 p.--Present copy Undated.
Excerpt from Cape Cod Times "High-tech signs `talk` to blind" --1 p.--Oct. 6, 1994.
Excerpt from Manchester Evening News "Bosses help by talking shop" --1 p.--Nov. 6, 1993.
Talking Signs, Inc.--Technical Data sheet--1 p.--Undated.
Report: Smith-Kettlewell Eye Research Institute, Rehabilitation Engineering Center--11 pp.--Mar. 15, 1991.
Paper entitled "Infrared Remote Signage Application for Transit Accessibility" --3 pp.--Undated.
Letter--Royal National Institute for the Blind--1 p.--Jan. 16, 1995.
Resolution of American Council of the Blind--1 p.--Approved Jul. 6, 1990.
Resolution of Board of Supervisors of San Francisco--3 pp. (on 2 sheets)--Approved Apr. 24, 1992.
Brochure headed "Talking Signs.RTM. . . . they speak for themselves" --8 pp.--Copyright 1994.
Negash Kinfe-Michael
Patty II R. Andrew
Sieberth John F.
Talking Signs, Inc.
LandOfFree
Signal transmitter with automatic output control and systems uti does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Signal transmitter with automatic output control and systems uti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal transmitter with automatic output control and systems uti will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1969128