Dimmable light control system
AssigneesSTMicroelectronics (Grenoble 2) SAS, STMicroelectronics (Rousset) SAS
InventorsGwenael Maillet, Jean-Louis Labyre, Gilles Bas
Life of this patent
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Abstract
Control over the operation of a dimmable light is supported by an interface circuit between the dimmable light and a near-field radio frequency communication controller. The interface circuit includes a first circuit that receives at least one control set point through a near-field radio frequency communication issued by the near-field radio frequency communication controller. A second circuit of the interface generates one or more electric signals in pulse width modulation based on the control set point.
Claims43
A circuit for controlling a dimmable light in response to a near-field radio frequency communication in a radio frequency band, comprising:
- a first circuit configured to receive at least one control set point through the near-field radio frequency communication;
- and
- a second circuit configured to generate at least one electric signal having a pulse width modulation (PWM) in accordance with said at least one control set point for application to said dimmable light to set a light intensity output;
- wherein the second circuit is further configured, during a time period within which the near-field radio frequency communication is occurring, to modify generation of said PWM control signal so that said PWM control signal does not contribute interfering noise in said radio frequency band;
- and
- wherein the modification for the generation of said PWM control signal during said time period is to temporarily terminate output of the PWM control signal to said dimmable light.
A circuit for controlling a dimmable light in response to a near-field radio frequency communication, comprising:
- a first circuit configured to receive at least one control set point through the near-field radio frequency communication;
- a second circuit configured to generate at least one electric signal having a pulse width modulation (PWM) in accordance with said at least one control set point for application to said dimmable light to set a light intensity output;
- a non-volatile memory containing at least one digital word which configures said at least one electric signal;
- and
- a third circuit which controls assigning access to the memory to the first circuit and the second circuit so that only one of the first and second circuits accesses the non-volatile memory at a time.
A circuit for controlling a dimmable light in response to a near-field radio frequency communication in a radio frequency band, comprising:
- a first circuit configured to receive at least one control set point through the near-field radio frequency communication;
- and
- a second circuit configured to generate at least one electric signal having a pulse width modulation (PWM) in accordance with said at least one control set point for application to said dimmable light to set a light intensity output;
- wherein the second circuit is further configured, during a time period within which the near-field radio frequency communication is occurring, to modify generation of said PWM control signal so that said PWM control signal does not contribute interfering noise in said radio frequency band;
- and
- wherein the modification for the generation of said PWM control signal during said time period is to temporarily change the PWM control signal output to said dimmable light from a first frequency to a second frequency.
A circuit for controlling a dimmable light in response to a near-field radio frequency communication in a radio frequency band, comprising:
- a first circuit configured to receive at least one control set point through the near-field radio frequency communication;
- and
- a second circuit configured to generate at least one electric signal having a pulse width modulation (PWM) in accordance with said at least one control set point for application to said dimmable light to set a light intensity output;
- wherein the second circuit is further configured, during a time period within which the near-field radio frequency communication is occurring, to modify generation of said PWM control signal so that said PWM control signal does not contribute interfering noise in said radio frequency band;
- and
- wherein the modification for the generation of said PWM control signal during said time period is to temporarily decrease the PWM control signal output to said dimmable light from a first amplitude to a second amplitude.
Dependencies are inferred from the claim text.