Camera Module Position Control With Distributed Driver Subcontrollers
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Solution Overview
Problem
Existing camera module systems face increased processing load and communication pressure due to centralized control of multiple drivers by a single controller, leading to longer calculation and communication times, which hampers high-performance operations.
Innovation Solution
A camera module design where drivers function as both slaves and sub-controllers, allowing for decentralized control through serial communication, reducing the processing load on the main controller and optimizing communication pathways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single master port on the controller is connected to multiple slave ports on drivers, then the system structure is simplified, but the processing load and communication pressure on the controller increases
Solution Approach 1:
The controller is divided into multiple master ports, distributing the control responsibilities. Each master port manages specific drivers, segmenting the centralized control function to reduce the processing load on any single controller component while maintaining overall system coordination.
Solution Approach 2:
Drivers are equipped with both slave ports (to receive commands from masters) and master ports (to communicate with other drivers). This intermediary capability allows drivers to act as intermediate controllers in the communication chain, reducing direct communication pressure on the main controller and enabling more efficient distributed coordination.
2Loss of time
If a single master port on the controller is connected to multiple slave ports on drivers, then the communication pathway is shortened, but the communication pressure and time consumption increase
Solution Approach 1:
The communication network is segmented into multiple master ports, each handling specific communication tasks. This segmentation distributes communication pressure across multiple channels, preventing any single communication pathway from becoming a bottleneck while maintaining efficient data transmission.
Solution Approach 2:
Drivers are designed with dual functionality, possessing both slave ports for receiving commands and master ports for initiating communications. This multi-functionality enables drivers to actively manage their own communication needs, reducing idle waiting time and optimizing communication efficiency across the system.
3Productivity
If drivers are given both slave and master ports, then the system achieves decentralized control and reduced processing load, but the device complexity increases
Solution Approach 1:
Drivers are designed as universal nodes with both slave and master port capabilities. This multi-functional design allows the same hardware component to operate in different roles depending on communication needs, reducing the need for separate dedicated components and actually simplifying the overall system architecture while enabling decentralized control.
Solution Approach 2:
The slave and master port functionalities are merged within the same driver unit. This combination eliminates the need for separate communication interfaces, reducing the total number of components while achieving the benefits of decentralized control and reduced processing load on the main controller.
Data Source
AI summary
Provided is a camera module, comprising a controller including a first position control unit generating a first position control signal indicating a first target position to which an object provided with an image sensor or a lens is to be moved, and a first master port outputting the first position control signal, a first driver including a first slave port connected to the first master port, a first driving unit providing driving force to the object based on the first position control signal, a second position control unit generating a second position control signal indicating a second target position to which the object is to be moved, and a second master port outputting the second position control signal, and a second driver including a second slave port connected to the second master port, a second driving unit providing driving force to the object based on the second position control signal.