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Method and mobile device with sensor time calibration

A technology for mobile devices and sensors, applied in measurement devices, special recording/indicating devices, instruments, etc., can solve problems such as power consumption and shortening battery life of mobile devices

Active Publication Date: 2020-10-09
CM HK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the CPU must be in full working mode for a long period of time, which consumes power and shortens the battery life of the mobile device

Method used

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  • Method and mobile device with sensor time calibration
  • Method and mobile device with sensor time calibration
  • Method and mobile device with sensor time calibration

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Embodiment Construction

[0074] Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used in the drawings and specification to refer to the same or like parts.

[0075] figure 1 is a schematic diagram illustrating a mobile device 100 according to an embodiment of the present application. The mobile device 100 may be a remote controller, a smart phone, a personal digital assistant (PDA), a tablet computer or a notebook computer, and the like. The mobile device 100 includes a sensor 110 , an MCU 120 and a CPU 130 . MCU 120 is coupled to sensor 110 . CPU 130 is coupled to MCU 120 . The sensor 110 includes a buffer 115 . The MCU 120 includes a buffer 125 . Buffers 115 and 125 are storage devices such as registers or memories.

[0076] Sensor 110 produces a plurality of samples. Sensor 110 may store samples in buffer 115 . The MCU 120 extracts samples f...

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Abstract

Method and mobile device with sensor time calibration. A representative mobile device includes a motion sensor having sensor circuitry and a first clock, the motion sensor configured to generate and store sensor data samples at a predefined output data rate based on the first clock; and a microcontroller having the circuitry A controller coupled to the motion sensor and configured to extract the sequence of sensor data samples from the motion sensor during a predefined averaging time span and calculate the total number of extracted sensor data samples. The microcontroller is further configured to provide a calibrated output data rate based on the total number of extracted sensor data samples and a reference time span corresponding to the predefined output data rate during which A time span of the sensor data samples is stored, the reference time span being provided by the second clock.

Description

technical field [0001] The present application relates to a mobile device. Background technique [0002] Today's mobile devices are often equipped with embedded sensors such as accelerometers, gyro sensors, and magnetometers. A central processing unit (CPU) of the mobile device may collect samples generated by the sensors and perform some processing based on the samples. For example, the CPU may calculate the orientation of the mobile and the mobile device or calculate how many steps the user of the mobile device has walked. [0003] Since the sensor is continuously generating samples, the CPU must constantly receive and analyze the samples. Therefore, the CPU must be in full working mode for a long period of time, which consumes power and shortens the battery life of the mobile device. Contents of the invention [0004] In view of this, the present invention provides a method and mobile device with sensor time calibration. [0005] The present invention provides a mob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/3287G06F1/3234G01C22/00G01D3/10G01D18/00
CPCG01C22/006G01D3/10G01D18/00G06F1/3206G06F1/3215G06F1/3243G06F1/3287
Inventor 许坚致
Owner CM HK LTD
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