Method for reducing power consumption of smart phone during communication

Abstract

The invention discloses a method for reducing the power consumption of a smart phone during communication, which comprises the following steps of: enabling the smart phone to center into the communication; enabling the smart phone to press close to an ear to shield a distance sensor PS, wherein system wakelock is not occupied by other modules; carrying out blank screen on the smart phone, and enabling a CPU (central processing unit) to enter into a dormant state; uploading an interception signal to the CPU by the distance sensor PS after the distance from the smart phone to ear reaches a threshold value; awakening the CPU; and lightening the screen by the control of the CPU. The smart phone is awakened in the manner of external interception by the method in the process of communication, the CPU is under the dormant state in the process of communication, and the CPU is awakened by the PS in an interception way when the smart phone leaves from the ear by a certain direction, so that under the condition that the user experience, the system function and the cost are not influenced, the power consumption current in the process of communication can be saved by 30mA-35mA, about 25% of communication power consumption can be reduced, and the cruising ability of the whole system, in particular to the mobile phone under multiple callings, can be greatly improved.

Description

technical field [0001] The invention relates to a method for reducing power consumption of a smart phone during a call. Background technique [0002] As a portable and mobile terminal, smart phones rely entirely on batteries for power supply. With the increasing functions of smart phones, their power consumption is also increasing, and users have higher and higher requirements for the battery life of smart phones. Therefore, , low-power design strategies have become an increasingly pressing issue in smartphone design. [0003] In the mobile phone system, there are at least two processors on the hardware level, one is the CPU, and the other is the MODEM. The CPU is the main processor of the system, and the MODEM is used for call processing. During the call, the MODEM will always work, and it will directly transmit the voice signal to the relevant audio equipment in the system. After verification, it is found that this process does not require the direct participation of the ...

AI Technical Summary

Problems solved by technology

In this case, during the call, the three devices (CPU, MODEM, PS) must be kept in working condition. This seems to be a matter of course, but the power consumption is relatively large.

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