Electronic device, processor and method for setting a sensor

Patent metadata

Field	Value
Publication number	US-10015409-B2
Application number	US-201514856810-A
Country	US
Kind code	B2
Filing date	Sep 17, 2015
Priority date	Sep 17, 2015
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

An electronic device and a method for setting a sensor are provided. The electronic device includes a sensor and a processor. The processor is coupled to the sensor and configured to calculate a plurality of groups of candidate sensor settings every calculation cycle, wherein each calculation cycle includes one or more frames, and each of the groups of candidate sensor settings corresponds to one respective frame of the calculation cycle. Every frame of the calculation cycle, the processor is further configured to determine a respective group of adoptable sensor settings for each frame of the calculation cycle according to the plurality of groups of candidate sensor settings, wherein the respective group of adoptable sensor settings is for provision to set a sensor.

First claim

What is claimed is:

1. An electronic device, comprising:
a sensor; and
a processor, coupled to the sensor, configured to calculate a plurality of groups of candidate sensor settings every calculation cycle, and each of the groups of candidate sensor settings corresponds to a respective one frame of the calculation cycle; determine a respective group of adoptable sensor settings for each frame of the calculation cycle according to the plurality of groups of candidate sensor settings every frame of the calculation cycle, wherein the respective group of adoptable sensor settings are adopted by the processor to set the sensor,
wherein each calculation cycle comprises two or more frames,
wherein each of the plurality of groups of candidate sensor settings comprises at least one of an automatic exposure time, a gain, and an aperture size, and
wherein the processor is further configured to calculate one or more respective total values for one or more parameters of the candidate sensor settings, and allocate each of the total values to the frames of the calculation cycle by a respective percentage of the parameter for each frame.

2. The electronic device of claim 1 , wherein the plurality of groups of candidate sensor settings are calculated in a first frame of the one or more frames of the calculation cycle in sequence.

3. A processor capable of setting a sensor, comprising:
a calculating circuit, configured to calculate a plurality of groups of candidate sensor settings every calculation cycle, and each of the groups of settings corresponds to a respective one frame of the calculation cycle;
a determination circuit, configured to determine a respective group of adoptable sensor settings for each frame of a calculation cycle according to the plurality of groups of candidate sensor settings every frame of the calculation cycle; and
an output circuit, configured to output the respective group of adoptable sensor settings for setting a sensor,
wherein the respective group of adoptable sensor settings are adopted by the processor to set the sensor,
wherein each calculation cycle comprises two or more frames,
wherein each of the plurality of groups of candidate sensor settings comprises at least one of an automatic exposure time, a gain, and an aperture size, and
wherein the calculating circuit is further configured to calculate one or more respective total values for one or more parameters of the candidate sensor settings, and allocate each of the total values to the frames of the calculation cycle by a respective percentage of the parameter for each frame.

4. The processor of claim 3 , wherein the plurality of groups of candidate sensor settings are calculated in a first frame of the calculation cycle in sequence.

5. The processor of claim 3 , wherein the determination circuit is further configured to determine whether to adopt or abandon a corresponding group of the groups of candidate sensor settings as the respective group of adoptable sensor settings for each frame of the calculation cycle.

6. The processor of claim 5 , wherein the determination circuit is further configured to replace at least one abandoned group of the plurality of groups of candidate sensor settings with at least one new group of candidate sensor settings.

7. The processor of claim 3 , further comprising:
a monitor circuit, configured to obtain a respective monitoring result for each of the one or more frames, wherein the monitoring result indicates monitored variations in environmental brightness in each of the one or more frames of the calculation cycle, and the calculating circuit determines whether to calculate one or more new groups of candidate sensor settings for a currently monitored frame and/or at least one following frame according to the monitoring result.

8. The processor of claim 7 , wherein when the monitoring result indicates that a variation of the environmental brightness is higher than a threshold, the calculating circuit calculates the one or more new groups of candidate sensor settings for the currently monitored frame or for at least one following frame.

9. The processor of claim 8 , wherein when the monitoring result indicates that the variation of the environmental brightness is higher than the threshold, the calculating circuit adopts at least one group from the new groups of candidate sensor settings for the currently monitored frame or for at least one following frame; and when the monitoring result indicates that the variation of the environmental brightness is not higher than the threshold, the calculating circuit adopts at least one group from among the groups of candidate sensor settings for the currently monitored frame or for at least one following frame.

10. The processor of claim 3 , further comprising:
a monitor circuit, configured to obtain a respective monitoring result for each of the one or more frames, wherein the monitoring result indicates monitored variations in environmental brightness in each of the one or more frames of the calculation cycle, and the calculating circuit calculates one or more new groups of candidate sensor settings for a currently monitored frame and/or at least one following frame, and determines to adopt the one or more groups of candidate sensor settings or the one or more new groups of candidate sensor settings for a currently monitored frame and/or at least one following frame according to the monitoring result.

11. The processor of claim 10 , wherein when the monitoring result indicates that the variation of the environmental brightness is higher than the threshold, the calculating circuit adopts at least one group from the new groups of candidate sensor settings for the currently monitored frame and/or the one or more following frames; and when the monitoring result indicates that the variation of the environmental brightness is not higher than the threshold, the calculating circuit adopts at least one group from the one or more groups of candidate sensor settings for the currently monitored frame and/or the one or more following frames.

12. A method for setting a sensor, comprising: calculating a plurality of groups of candidate sensor settings every calculation cycle, and each of the groups of settings corresponds to a respective one frame of the calculation cycle; determining a respective group of adoptable sensor settings for each frame of a calculation cycle according to the plurality of groups of candidate sensor settings every frame of the calculation cycle,
adopting the respective group of adoptable sensor settings to set the sensor,
wherein each calculation cycle comprises two or more frames,
wherein each of the plurality of groups of candidate sensor settings comprises at least one of an automatic exposure time, a gain, and an aperture size, and
wherein calculating the plurality of groups of candidate sensor settings every calculation cycle further comprises:
calculating one or more respective total values for one or more parameters of the candidate sensor settings; and allocating each of the total values to the frames of the calculation cycle by a respective percentage of the parameter for each frame.

13. The method for setting a sensor of claim 12 , wherein the plurality of groups of candidate sensor settings are calculated in a first frame of the calculation cycle in sequence.

14. The method for setting a sensor of claim 12 , wherein determining the respective group of adoptable sensor settings for each frame of the calculation cycle according to the plurality of groups of candidate sensor settings every frame of the calculation cycle comprises determining whether to adopt or aban

Assignees

• Mediatek Inc

Inventors

• Wu Mu-Hsing
• Lin Ching-Hsien
• Wei yu-ming
• Yang sheng-long

Classifications

• H04N23/71 Primary

  Circuitry for evaluating the brightness variation · CPC title

• H04N23/73 Primary

  by influencing the exposure time · CPC title

• H04N5/2351 Primary

  Electricity · mapped topic