Circuit for and a method of sensing a property of light
AssigneeKoninklijke Philips Electronics N.V.
InventorsHarald Josef Günther Radermacher, Christoph Martiny
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Abstract
In a circuit (1) for sensing a property of light there are provided a first circuit element (7) that is sensitive to light and that is realized to generate an output signal (I1) during a measurement time period (ΔtM), wherein the output signal (I1) is generated according to light to which the first circuit element (7) is exposed and the temperature (T) of the first circuit element (7), and a second circuit element (8) that is realized to increase the temperature (T) of the first circuit element (7) during a warming time period (ΔtW) that precedes the measurement time period (ΔtM).
Claims15
A circuit for sensing a property of light, the circuit comprising a first circuit element that is sensitive to light and is configured to generate an output signal during a measurement time period, wherein the output signal is generated according to light to which the first circuit element is exposed and the temperature of the first circuit element, and
- a second circuit element that is configured to increase the temperature of the first circuit element during a warming time period that precedes the measurement time period.
A method of sensing a property of light with a circuit that comprises a first circuit element and a second circuit element, which method comprises the steps of:
- exposing said first circuit element to light,
- and
- increasing the temperature of said first circuit element by means of said second circuit element during a warming time period that precedes a measurement time period, and
- generating an output signal by means of said first circuit element during the measurement time period, wherein the output signal is generated according to the light to which the first circuit element is exposed and the temperature of the first circuit element.
(canceled)
Dependencies are inferred from the claim text.