Method and apparatus for scaling the average current supply...

H - Electricity – 05 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H05B 33/08 (2006.01)

Patent

CA 2576304

The present invention provides a method and apparatus for scaling the average drive current supplied to a light-emitting element or string thereof by coupling a scaling signal to an original control signal thereby generating an effective control signal for control of the light-emitting element(s). The scaling signal can be a modulated signal, for example a Pulse Width Modulation (PWM) signal, Pulse Code Modulation (PCM) signal, or other signal and modifies the original control signal to produce an effective control signal. The effective control signal is subsequently used to control the supply of power to the light-emitting element(s) from a power source via a switching device. The effective control signal essentially modifies the ON time of the light- emitting element(s), thereby modifying the average drive current passing through the light-emitting element(s). The scaling signal is coupled to the original control signal by a coupling mechanism, thereby enabling the modification of the original control signal by the scaling signal forming the effective control signal.

La présente invention procure une méthode et un appareil pour échelonner le courant de commande alimenté à un élément émettant de la lumière ou une chaîne de tels éléments en couplant un signal d~échelonnement avec un signal de commande d~origine générant ainsi un signal de commande réel pour commander le ou les éléments émettant de la lumière. Le signal d~échelonnement peut être un signal modulé, par exemple un signal modulé en largeur d~impulsions (PWM), modulé en codage d~impulsions (PCM) ou un autre signal et modifie le signal de commande d~origine pour produire un signal de commande réel. Le signal de commande réel est ensuite utilisé pour commander l~alimentation du ou des éléments émettant de la lumière par une source d~alimentation au travers d~un dispositif à découpage. Le signal de commande réel modifie pour l~essentiel la durée ON du ou des éléments émettant de la lumière, modifiant ainsi le courant moyen de commande traversant le ou les éléments émettant de la lumière. Le signal d~échelonnement est couplé au signal de commande d~origine par un mécanisme de couplage, permettant ainsi la modification du signal de commande d~origine par le signal d~échelonnement formant le signal de commande réel.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for scaling the average current supply... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for scaling the average current supply..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for scaling the average current supply... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1482132

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.