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1. WO2020163360 - LIMITEUR DE COURANT INTELLIGENT POUR DISPOSITIF INFORMATIQUE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:

1. A mobile computing device, comprising:

a first digital signal processor configured to receive a first digital signal;

a first amplifier configured to process the received first digital signal; and a first output generator communicatively coupled to the first amplifier;

a second digital signal processor configured to receive a second digital signal; a second amplifier configured to process the received second digital signal; and a second output generator communicatively coupled to the second amplifier; a portable energy source configured to supply power to at least the first amplifier and the second amplifier; and

an intelligent current limiter configured to:

determine a power consumption limit based on a voltage of the portable energy source, a portable energy- source current limit defined by a portable energy source current budget for operation of the first amplifier and the second amplifier, an efficiency of the first amplifier and an efficiency of the second amplifier,

determine a first predicted power consumption by the first amplifier based on the first digital signal received at the first digital signal processor, a gain of the first amplifier, and an admittance of the first output generator,

determine a second predicted power consumption by the second amplifier based on the second digital signal received at the second digital signal processor, a gain of the second amplifier, and an admittance of the second output generator,

determine a combined predicted power consumption based on the first and second predicted power consumptions,

compare the combined predicted power consumption with the power consumption limit, and

adjust at least one of a gain setting at the first digital signal processor and a gain setting at the second digital signal processor based on the comparison prior to supplying the first digital signal to the first amplifier and the second digital signal to the second amplifier.

2. The mobile computing device as recited in claim 1, wherein at least one of the first digital signal and the second digital signal comprises a digital audio signal, at

least one of the first amplifier and the second amplifier comprises an audio amplifier, and at least one of the first output generator and the second output generator comprises a speaker.

3. The mobile computing device as recited in claim 1, wherein at least one of the first digital signal and the second digital signal comprises a digital haptic signal, at least one of the first amplifier and the second amplifier comprises a haptic amplifier, and at least one of the first output generator and the second output generator comprises a haptic vibrator.

4. The mobile computing device as recited in claim 1, wherein the intelligent current limiter is configured to adjust at least one of the gain setting of the first digital signal processor and the gain setting of the second digital signal processor based on a power allocation priority.

5. The mobile computing device as recited in claim 1, wherein the intelligent current limiter is configured to:

determine the first predicted power consumption by the first amplifier by determining a product of a predicted voltage across the fist output generator associated with processing the first digital signal and a predicted current generated by the first amplifier associated with processing the first digital signal, and

determine the second predicted power consumption by the second amplifier by determining a product of a predicted voltage across the second output generator associated with processing the second digital signal and a predicted current generated by the second amplifier associated with processing the second digital signal

6. The mobile computing device as recited in claim 5, wherein the intelligent current limiter is configured to:

determine the first predicted voltage across the first output generator associated with processing the first digital signal by determining a product of a voltage of the first digital signal and the gain of the first amplifier, and

determine the second predicted current generated by the second amplifier associated with processing the second digital signal by determining a product of a voltage the second digital signal, the gain of the second output generator, and the admittance of the second output generator.

7. The mobile computing device as recited in claim 6, wherein the admittance of the first output generator and the admittance of the second output generator varies as a function of a frequency of the first digital signal and the second digital signal, respectively.

8. The mobile computing device as recited in claim 1, wherein the mobile computing device comprises one of a mobile phone, a tablet, and a laptop computer.

9. A mobile computing device, comprising:

an audio system comprising:

an audio digital signal processor configured to receive a digital audio signal;

an audio amplifier; and

a speaker coupled to an output of the audio amplifier;

a haptic system comprising:

a haptic digital signal processor configured to receive a digital haptic signal;

a haptic amplifier; and

a haptic vibrator coupled to an output of the haptic amplifier;

a portable energy source configured to supply power to at least the audio amplifier and the haptic amplifier; and

an intelligent current limiter configured to:

determine a power consumption limit based on a voltage of the portable energy source, a portable energy source current limit defined by a portable energy source current budget for operation of the audio amplifier and the haptic amplifier, an efficiency of the audio amplifier and an efficiency of the haptic amplifier,

determine a first predicted power consumption by the audio amplifier based on the digital audio signal received at the audio digital signal processor, a gain of the audio amplifier, and an admittance of the speaker,

determine a second predicted power consumption by the haptic amplifier based on the digital haptic signal received at the haptic digital signal processor, a gain of the haptic amplifier, and an admittance of the haptic vibrator,

determine a combined predicted power consumption based on the first and second predicted power consumptions,

compare the combined predicted power consumption with the power consumption limit, and

adjust at least one of again setting at the audio digital signal processor and a gain setting at the haptic digital signal processor based on the comparison prior to supplying the digital audio signal to the audio amplifier and the digital haptic signal to the haptic amplifier.

10. The mobile computing device as recited in claim 9, wherein the intelligent current limiter is configured to adjust at least one of the gain setting of the audio digital signal processor and the gain setting of the haptic digital signal processor based on a power allocation priority.

11. The mobile computing device as recited in claim 9, wherein the intelligent current limiter is configured to:

determine the first predicted power consumption by the audio amplifier by determining a product of a predicted voltage across the speaker associated with processing the digital audio signal and a predicted current generated by the audio amplifier associated with processing the digital audio signal, and

determine the second predicted power consumption by the haptic amplifier by determining a product of a predicted voltage across the haptic vibrator associated with processing the digital haptic signal and a predicted current generated by the haptic amplifier associated with processing the digital haptic signal

12. The mobile computing device as recited in claim 11 , wherein the at least one processor causes the intelligent current limiter to:

determine the first predicted voltage across the speaker associated with processing the digital audio signal by determining a product of a voltage of the digital audio signal and the gain of the audio amplifier, and

determine the second predicted current generated by the haptic amplifier

associated with processing the digital haptic signal by determining a product of a voltage the digital haptic signal, the gain of the haptic amplifier, and the admittance of the haptic vibrator.

13. The mobile computing device as recited in claim 11 , wherein the admittance of the speaker and the admittance of the haptic vibrator varies as a function of a frequency of the digital audio signal and the digital haptic signal, respectively.

14. The digital signal processor of claim 9, wherein the mobile computing device comprises one of a mobile phone, a tablet, and a laptop computer.

15. A digital signal processor for a mobile computing device including an intelligent current limiter, comprising:

at least one processor; and

at least one memory comprising computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the intelligent current limiter to:

determine a first predicted power consumption by an audio amplifier based on a digital audio signal received at an audio system, a gain of the audio amplifier, and an admittance of a speaker coupled to the audio amplifier,

determine a second predicted power consumption by a haptic amplifier based on a digital haptic signal received at a haptic system, a gain of the haptic amplifier, and an admittance of a haptic vibrator coupled to the haptic amplifier, determine a combined predicted power consumption based on the first and second predicted power consumptions,

determine a power consumption limit based on a battery voltage of a battery configured to supply power to tire audio amplifier and the haptic amplifier, a battery current limit associated with the battery' and defined by a battery' current budget for operation of the audio amplifier and the haptic amplifier, an efficiency of the audio amplifier and an efficiency of the haptic amplifier,

compare the combined predicted power consumption with the power consumption limit, and

adjust at least one of a gain setting at the audio digital signal processor

and a gain setting at the haptic digital signal processor based on the comparison prior to supplying the digital audio signal to the audio amplifier and the digital haptic signal to the haptic amplifier.

16. The digital signal processor as recited in claim 15, wherein the at least one processor causes the intelligent current limiter to adjust at least one of the gain setting of the audio digital signal processor and the gain setting of the haptic digital signal processor based on a power allocation priority.

17. The digital signal processor as recited in claim 15, wherein the at least one processor causes the intelligent current limiter to:

determine the first predicted power consumption by the audio amplifier by determining a product of a predicted voltage across the speaker associated with processing the digital audio signal and a predicted current generated by the audio amplifier associated with processing tire digital audio signal, and

determine the second predicted power consumption by the haptic amplifier by determining a product of a predicted voltage across the haptic vibrator associated with processing the digital haptic signal and a predicted current generated by the haptic amplifier associated with processing the digital haptic signal

18. The digital signal processor as recited in claim 16, wherein the at least one processor causes the intelligent current limiter to:

determine the first predicted voltage across the speaker associated with processing the digital audio signal by determining a product of a voltage of the digital audio signal and the gain of the audio amplifier, and

determine the second predicted current generated by the haptic amplifier associated with processing the digital haptic signal by' determining a product of a voltage the digital haptic signal, the gain of the haptic amplifier, and the admittance of the haptic vibrator.

19. The digital signal processor as recited in claim 16, wherein the admittance of the speaker and the admittance of the haptic vibrator varies as a function of a frequency of the digital audio signal and the digital haptic signal, respectively.

20. The digital signal processor of claim 14, wherein the mobile computing device comprises one of a mobile phone, a tablet, and a laptop computer.