Light-Powered Transmitter Assembly
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United States of America Patent
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Issued Date -
Dec 15, 2011
app pub date -
Jun 9, 2011
filing date -
Jun 9, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed is a light-powered transmitter assembly for transmitting a wireless signal relating to received light. The assembly comprises a photovoltaic device and an energy storage device connected to the photovoltaic device for receiving charge from the photovoltaic device. A threshold charge-sensing circuit connects to the energy storage device for making a determination whenever the charge of the energy storage device reaches a threshold level. A transmitting circuit, responsive to the threshold charge-sensing circuit, transmits a wireless signal that is indicative of the energy storage device having reached the threshold level of charge and that uniquely identifies the wireless signal as corning from the light-powered transmitter assembly. The transmitting circuit is at least partially powered from energy received from the energy storage device. An interval between two successive ones of the determinations is a function of average intensity of light received by the photovoltaic device.
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