Methods for data synchronization between a sensor hub and an application processor and apparatuses using the same
AssigneeVia Alliance Semiconductor Co., Ltd.
InventorsJiangze CHEN, Dongxing WU, Deming GU, Guixiang HE, Kangning ZHU
Life of this patent
Estimating the term…
Abstract
The invention introduces a method for data synchronization between a sensor hub and an application processor, which contains at least the following steps: generating and adding a plurality of absolute time stamps in a sensor-data stream; and generating and adding a plurality of pieces of sensor data and a plurality of relative time stamps in the sensor-data stream between the moments of generating each two adjacent absolute time stamps, wherein each relative time stamp is associated with one piece of sensor data.
Claims22
A method for data synchronization between a sensor hub and an application processor, comprising:
- generating and adding a plurality of absolute time stamps in a sensor-data stream;
- and
- generating and adding a plurality of pieces of sensor data and a plurality of relative time stamps in the sensor-data stream between the moments of generating each two adjacent absolute time stamps, wherein each relative time stamp is associated with one piece of sensor data.
A method for data synchronization between a sensor hub and an application processor, comprising:
- reading an ID (identifier) from a sensor-data stream;
- determining whether the ID is a time ID;
- when the ID is the time ID, reading an absolute time stamp from the sensor-data stream and storing the absolute time stamp in the application processor;
- and
- when the ID is not the time ID, reading sensor data and a relative time stamp from the sensor-data stream, generating a recovered time stamp according to the absolute time stamp and the relative time stamp and converting the recovered time stamp to a value of an RTC (Real-time Counter) of the application processor.
An apparatus for data synchronization between a sensor hub and an application processor, comprising:
- a memory storing a sensor-data stream;
- and
- a sensor hub, coupled to a micro-sensor and the memory, generating and adding a plurality of first absolute time stamps in the sensor-data stream;
- and
- generating and adding a plurality of pieces of first sensor data and a plurality of first relative time stamps in the sensor-data stream between the moments of generating each two adjacent first absolute time stamps, wherein each first relative time stamp is associated with one piece of first sensor data.
Dependencies are inferred from the claim text.