Hand Display Control With Switched Frequencies Under High Processing Load
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Solution Overview
Problem
Hand display devices face challenges in efficiently performing fast-forward operations of hands without excessive power consumption and processing load when high-load processing, such as communication, is performed concurrently.
Innovation Solution
A hand display control device that switches between first and second frequency signals to manage processing loads, prohibiting fast-forward operations during high-load processing and resuming them when conditions allow, thereby optimizing power consumption and processing capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-load processing (communication) is performed concurrently with fast-forward operation, then processing capability is improved, but power consumption and processing load become excessively high
Solution Approach 1:
The system dynamically switches between first and second clock frequencies based on operational conditions. During fast-forward operations, the system uses the higher second clock frequency to improve processing speed. During normal operations, it switches to the lower first clock frequency to reduce power consumption. This dynamic frequency adjustment resolves the contradiction between processing capability and power consumption.
Solution Approach 2:
The system periodically monitors operational conditions and alternates between different clock frequencies based on whether fast-forward operations are being performed. This periodic switching between high-performance mode (second frequency) and power-saving mode (first frequency) allows the system to achieve high processing capability when needed while minimizing power consumption during normal operations.
2Speed
If fast-forward operation is performed, then display updating speed is improved, but processing time increases due to sequential step operations
Solution Approach 1:
The system changes the clock frequency parameter from the first frequency to the second frequency during fast-forward operations. This parameter change increases the processing speed of the stepping motor control, allowing hands to move faster and display to update more quickly, thereby reducing the processing time required for fast-forward operations.
3Productivity
If second clock signal is output to both first and second processors, then processing capability is improved, but system load becomes excessively high
Solution Approach 1:
Instead of continuously outputting the second clock signal to both processors (excessive action), the system selectively outputs the second clock signal only when fast-forward operations are being performed (partial action). During normal operations, only the first processor receives the second frequency while the second processor operates on the first frequency, thereby reducing system load while maintaining adequate processing capability.
Data Source
AI summary
A hand display control device includes a processor. The processor causes an oscillation circuit to output a first frequency signal or a second frequency signal to a first processing circuit that executes processing for operating a hand in response to the first frequency signal. The oscillation circuit outputs the first frequency signal or the second frequency signal by switching. The second frequency signal is higher in frequency than the first frequency signal. The processor controls whether to output the second frequency signal to a second processing circuit that performs previously determined certain processing in response to the second frequency signal. The processor controls the switching of the oscillation circuit depending on whether the certain processing is performed. The processor prohibits the first processing circuit from performing a specific operation of the hand while the second processing circuit is performing the certain processing.