Multi-Mode ADC Control for Lens Position Feedback
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Solution Overview
Problem
Camera driving apparatuses with multiple lens barrels require advanced control methods to manage analog signals from lens position detection, necessitating an efficient analog-digital converter (ADC) module that can operate in various modes to support different control strategies and reduce power consumption while ensuring data accuracy.
Innovation Solution
The ADC module incorporates a controller that operates in multiple modes, including a timer-based mode for repeated signal output, an instruction-based mode for synchronized data storage and interrupt signals, and a filtering mode for noise correction, enabling efficient conversion and processing of analog signals into digital data for lens position feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the ADC module operates in multiple modes to support different control methods, then the adaptability and versatility are improved, but the device complexity increases
Solution Approach 1:
The ADC controller is designed to operate in multiple modes (first mode with timer-based repeated output, second mode with instruction-based output, third mode combining both features) to support different control methods for camera driving apparatuses with multiple lens barrels, enabling a single device to perform multiple functions
2Productivity
If the ADC controller repeatedly outputs control signals using a timer, then the productivity is improved, but the use of energy increases
Solution Approach 1:
The ADC controller dynamically switches between different operating modes based on the control method being used: timer-based repeated output for high productivity scenarios, instruction-based output for power-saving scenarios, enabling the system to adapt its behavior to balance productivity and energy consumption
3Reliability
If the ADC controller stores digital data in a register and outputs interrupt signals, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The ADC controller implements feedback mechanisms by storing digital data in registers and outputting interrupt signals to indicate completion of conversion, enabling the system to reliably track the state of data processing and ensure accurate lens position feedback
Data Source
AI summary
An analog-digital converter (ADC) module includes: an ADC configured to convert an analog signal into digital data according to a control signal; and an ADC controller configured to receive a mode selection signal setting the ADC controller in one of a plurality of modes, output the control signal to the ADC, and receive the digital data from the ADC. The ADC controller repeatedly outputs the control signal to the ADC using a timer, and stores the digital data in a register in response to an end of conversion (EOC) signal from the ADC, in a first mode. The ADC controller outputs the control signal to the ADC in response to an instruction signal, stores the digital data in the register in response to the EOC signal being input from the ADC, and outputs an interrupt signal to the ADC in response to the digital data being stored in the register, in a second mode.