POWER REDUCTION FOR DUAL CAMERA SYNCHRONIZATION
First Claim
Patent Images
1. A method for image capture, comprising:
- periodically sending a synchronization signal from a master image sensor of a multiple camera module to a slave image sensor of the multiple camera module, the synchronization signal sent once per synchronization period and indicating a frame start time;
estimating a time required to complete an image processing operation;
comparing the estimated time to the synchronization period; and
selectively adjusting a frame update rate of the slave image sensor based at least in part on the comparing.
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Abstract
Methods and apparatuses are disclosed for reducing power consumption in image processing systems comprising a master image sensor and a slave image sensor synchronized to the master image sensor. For example, a synchronization signal may be periodically sent from the master image sensor to the slave image sensor, where the synchronization signal is sent once per synchronization period and indicates a frame start time. A time may be estimated to complete an image processing operation. A comparison may be made between the estimated time and the synchronization period, and a frame capture rate of the slave image sensor may be selectively adjusted based at least in part on the comparison.
14 Citations
30 Claims
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1. A method for image capture, comprising:
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periodically sending a synchronization signal from a master image sensor of a multiple camera module to a slave image sensor of the multiple camera module, the synchronization signal sent once per synchronization period and indicating a frame start time; estimating a time required to complete an image processing operation; comparing the estimated time to the synchronization period; and selectively adjusting a frame update rate of the slave image sensor based at least in part on the comparing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An image processing device, comprising:
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two or more image sensors, comprising a master image sensor and a slave image sensor synchronized to the master image sensor; one or more processors; and a memory, coupled to the two or more image sensors and to the one or more processors, storing instructions that, when executed by the one or more processors, cause the image processing device to; periodically send a synchronization signal from the master image sensor to the slave image sensor, the synchronization signal sent once per synchronization period and indicating a frame start time; estimate a time required to complete an image processing operation; compare the estimated time to the synchronization period; and selectively adjust a frame update rate of the slave image sensor based at least in part on the comparing. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A non-transitory computer-readable storage medium storing instructions that, when executed by one or more processors of an image processing device, cause the image processing device to:
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periodically send a synchronization signal from a master image sensor to a slave image sensor synchronized to the master image sensor, the synchronization signal sent once per synchronization period and indicating a frame start time; estimate a time required to complete an image processing operation; compare the estimated time to the synchronization period; and selectively adjust a frame update rate of the slave image sensor based at least in part on the comparing. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. An image processing device, comprising
means for periodically sending a synchronization signal from a master image sensor to a slave image sensor synchronized to the master image sensor, the synchronization signal sent once per synchronization period and indicating a frame start time; -
means for estimating a time required to complete an image processing operation; means for comparing the estimated time to the synchronization period; and means for selectively adjusting a frame update rate of the slave image sensor based at least in part on the comparing.
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Specification