Low Power Processor Parallel Boot Sequencing
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Solution Overview
Problem
There are delays between when an image capture device is powered on and when it becomes operational for tasks related to the power on event, leading to user frustration and inefficiency in power sequencing.
Innovation Solution
Implementing a low power processor in the image capture device to initiate multiple parallel processes upon detection of a power on event, including boot-up processes for the primary processor and LED indicators, to provide immediate user feedback and streamline power sequencing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional sequential power on processing is used, then device operability is ensured, but user experience deteriorates due to perceptible delays between power on and operational status
Solution Approach 1:
The low power processor performs preliminary actions by initiating multiple boot processes immediately upon detecting the power on event, before the primary processor is fully operational. This includes starting LED indicator sequences and preparing system components in advance, so that the device appears operational to the user without the perceptible delay that would otherwise occur.
Solution Approach 2:
The power on processing is segmented into two distinct processor roles: a low power processor that handles immediate boot initiation and user feedback tasks, and a primary processor that handles full system operations. This segmentation allows critical user-facing functions to start immediately while the main system boots in the background, resolving the contradiction between quick response and complete system readiness.
2Productivity
If multiple parallel boot processes are initiated, then power on speed is improved, but device complexity increases due to additional power management requirements
Solution Approach 1:
The low power processor serves as an intermediary between the power on event and the primary processor boot process. It manages the complexity of initiating multiple parallel boot processes, controlling LED indicators, and coordinating power sequencing without requiring the primary processor to handle these tasks directly. This intermediary role simplifies the overall system architecture while enabling fast parallel boot operations.
3Reliability
If synchronous power sequencing is implemented between primary and secondary power management components, then system reliability is improved, but control complexity increases
Solution Approach 1:
The control signals for both power on and power off sequencing are merged into a single control line between the primary and secondary power management components. The low power processor generates this combined control signal that simultaneously manages multiple boot processes and coordinates synchronous power sequencing, reducing the number of control lines while maintaining reliable synchronization between components.
Data Source
AI summary
Described is an image capture device which provides substantially immediate indications to a user that an image capture device is on after the user has turned on the image capture device. The image capture device can include a processor and a low power processor. The low power processor can perform or initiate multiple substantially parallel processes upon detection of an image capture device power on event. In some implementations, the low power processor can initiate a boot-up process for the processor and a light emitting device (LED) power on process for a LED indicator. In some implementations, the low power processor can initiate a boot-up process for the processor, a LED power on process for a LED indicator, and a battery authentication process for a battery inserted in the image capture device.