Logic Chip Vibration Correction Signal Routing
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Solution Overview
Problem
Existing semiconductor devices with anti-shake functions face challenges in achieving high-speed processing due to decreased microcomputer processing rates with increased signal processing volume, and integrating dedicated signal processing circuits requires costly redesigns.
Innovation Solution
A semiconductor device with a logic chip that includes a digital circuit generating a correction signal for vibration, featuring multiple signal output sections for various vibration correction control units, such as voice coil motors, stepping motors, and piezo elements, allowing for flexible vibration correction control and common chip usage across different methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a microcomputer is used for signal processing, then various types of processing operations can be achieved, but the processing rate decreases as the volume of signal processing increases
Solution Approach 1:
The patent segments the signal processing system into two parts: a microcomputer that handles control logic and a dedicated signal processing circuit that handles computationally intensive tasks. This segmentation allows the microcomputer to maintain versatility while the dedicated circuit ensures high processing rate for vibration correction calculations.
Solution Approach 2:
The patent introduces an intermediary dedicated signal processing circuit that acts as a mediator between the vibration detection element and the microcomputer. This intermediary handles the heavy computational load of processing vibration detection signals, allowing the microcomputer to focus on control operations without being bottlenecked by processing speed requirements.
2Productivity
If dedicated signal processing circuits are integrated, then the processing rate is effectively increased, but redesign is required each time the apparatus design is changed, significantly increasing manufacturing costs
Solution Approach 1:
The patent designs the dedicated signal processing circuit with universal functionality that can accommodate different apparatus designs and vibration correction methods. The circuit is configured to process signals for multiple types of driving units (voice coil motor, stepping motor, piezo element) without requiring redesign, thereby maintaining high processing rate while reducing manufacturing costs through standardization.
3Adaptability or versatility
If the logic chip is designed to support multiple vibration correction methods, then flexibility and adaptability are improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic configurability in the logic chip, allowing the control signal output unit to be selectively configured to match different vibration correction methods. The chip can dynamically adapt its output characteristics based on the detected driving unit type, providing multi-functionality without requiring all possible circuit configurations to be permanently built-in, thus managing complexity while maintaining versatility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables high-speed processing and flexible adoption across different vibration correction methods, reducing manufacturing costs by allowing a single logic chip to be used for various driving units, thus enhancing image stabilization in cameras and other image capturing apparatuses.
Implementation Method 1
a vibration detection element for detecting vibration of the apparatus
Implementation Method 2
a voice coil motor control signal output section for generating a control signal for a voice coil motor
Implementation Method 3
a piezo element control signal output section for generating a control signal for a piezo element
Data Source
AI summary
A semiconductor device with an “anti-shake” function includes a logic chip having a digital circuit which obtains a value indicating the amount of vibration of device such as an imaging apparatus based on a vibration detection signal supplied from a vibration detection element to generate a correction signal. The logic chip includes a correction signal processing unit which generates the correction signal, and a control signal output unit which outputs a vibration control signal in accordance with the correction signal to a vibration correction control unit which executes vibration correction control for an optical component. The control signal output unit includes a plurality of types of signal output sections and outputs a vibration control signal corresponding to a driving unit from one signal output section selected from among the plurality of types of signal output sections.