Processor Notification Signal for Sensor Data Time Synchronization
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Solution Overview
Problem
Electronic devices face inaccuracies in time synchronization of sensor data due to differences in time sources between processors, leading to potential temporal desynchronization of data generated by a low-energy processor and a main processor.
Innovation Solution
A method where a first processor sends a notification signal to a second processor, allowing the second processor to determine time information and associate it with sensor data received from the first processor, ensuring accurate temporal synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If each processor generates time information using its own time source, then each processor can independently timestamp its data, but time information accuracy deteriorates due to temporal desynchronization between processors
Solution Approach 1:
The patent introduces a notification signal as an intermediary mechanism between the first processor (sensor data generator) and the second processor (time information generator). When the first processor generates sensor data, it sends a notification signal to the second processor, which then generates time information in response to this signal. This intermediary communication ensures that time information is accurately tied to the corresponding sensor data event, resolving the temporal desynchronization issue while maintaining independent time sources.
2Productivity
If the first processor processes and timestamps sensor data locally, then processing speed is improved, but time synchronization with the main processor deteriorates
Solution Approach 1:
The patent segments the time synchronization function from the data processing function. The first processor (low-power processor) handles sensor data acquisition and local processing independently, maintaining high productivity. The second processor (main processor) handles time information generation independently, ensuring accurate time synchronization. The notification signal mechanism connects these segmented functions, allowing each processor to operate independently while maintaining temporal accuracy.
Data Source
AI summary
An electronic device including a sensor, a first processor, and a second processor and a method for associating data with time information are provided. The method includes including receiving a notification signal corresponding to the data from the first processor, determining time information and first identification information that correspond to the notification signal in response to the reception, receiving the data and second identification information corresponding to the notification signal from the first processor, associating the data with the time information at least based on the first identification information and the second identification information, and providing the data associated with the time information to an application. Other various embodiments may also be possible.