Infrared audio transmitter system
First Claim
Patent Images
1. An infrared signal transmitter comprising:
- a signal generator;
a housing in which said signal generator is housed;
a mount;
a plurality of infrared transmitting elements disposed on said mount and operatively connected to said signal generator for transmitting infrared signals in a multi-directional pattern, said plurality of infrared transmitting elements includinga single front throw emitter for transmitting said infrared signals substantially along a single direction, and a multi-directional emitter for transmitting said infrared signals at least along the rear and sides of said single direction; and
means jointly secured to said mount and said housing for extending said mount substantially above said housing so as to allow said transmitting elements to transmit said infrared signals substantially unobstructed to a user.
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Abstract
An infrared assistive listening system capable of enhanced performance in medium-sized locations, such as courtrooms, classrooms, and conference rooms, is realized by a system comprising a pressure zone microphone capable of picking up distant speakers, a high-gain pre-amplifier, an equalization and pre-emphasis circuit, an automatic gain control and limiting circuit, a mute feature capable of remote activation, a FM modulator, a pulse width modulator, and a high-power single front throw infrared emitter. Another embodiment of the invention employs an multi-directional infrared emitter array in conjunction with the single front throw emitter.
56 Citations
20 Claims
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1. An infrared signal transmitter comprising:
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a signal generator; a housing in which said signal generator is housed; a mount; a plurality of infrared transmitting elements disposed on said mount and operatively connected to said signal generator for transmitting infrared signals in a multi-directional pattern, said plurality of infrared transmitting elements including a single front throw emitter for transmitting said infrared signals substantially along a single direction, and a multi-directional emitter for transmitting said infrared signals at least along the rear and sides of said single direction; and means jointly secured to said mount and said housing for extending said mount substantially above said housing so as to allow said transmitting elements to transmit said infrared signals substantially unobstructed to a user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An infrared signal transmitter comprising:
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a signal generator; a housing in which said signal generator is housed; a mount; a single front throw emitter operatively connected to said signal generator for transmitting infrared signals substantially along a single direction; and a multi-directional emitter operatively connected to said signal generator for transmitting infrared signals at least along the rear and sides of said single direction. - View Dependent Claims (19, 20)
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Specification