Method of determining a state of a display
AssigneeSTMicroelectronics (Grenoble 2) SAS
InventorSalim BOUCHENE
Life of this patent
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Abstract
A display includes a display panel and a circuit. The circuit controls the display panel according to at least one control mode such as a pulse width modulation control mode. A method for determining a state of the display includes: acquiring samples from a channel of an ambient light sensor disposed below the display panel; supplying the samples to a processing circuit; detecting, by the processing circuit and based on said samples, whether the display panel is controlled in pulse width modulation; and following detecting the pulse width modulation control mode, calculating by the processing circuit a duty cycle from the samples.
Claims16
A method of determining a state of a display that includes a display panel and a circuit for controlling the display panel, wherein the circuit for controlling the display panel controls the display panel according to at least one control mode comprising a pulse width modulation control mode, the method comprising:
- 1) acquiring a plurality of samples from at least one channel of an ambient light sensor disposed below the display panel during a first acquisition phase;
- 2) supplying the samples to a processing circuit;
- 3) detecting, by the processing circuit and based on said samples, whether the display panel is controlled according to the pulse width modulation control mode;
- and
- 4) following detection of the pulse width modulation control mode, calculating by the processing circuit from said samples a duty cycle of a pulse width modulation of said pulse width modulation control mode.
Dependencies are inferred from the claim text.