Projector Depth Detection Auto-Focusing Control
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Solution Overview
Problem
Projector focusing methods are either manual and inaccurate or time-consuming, involving step motors and multiple position adjustments, often resulting in failed focusing.
Innovation Solution
A control method using a depth detecting unit to calculate and adjust the position of a projector's optical lens based on detected depth information and parameters, enabling quick and accurate focusing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual lens adjustment is used, then operation simplicity is maintained, but focusing accuracy deteriorates
Solution Approach 1:
The system automatically performs focusing by detecting the target object's position and calculating the optimal lens position, eliminating the need for manual operation while maintaining simplicity. The projector serves itself by autonomously adjusting the optical lens based on environmental feedback.
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated control system that uses depth detection and parameter calculation to determine lens position, substituting human operation with electronic control and calculation mechanisms.
2Measurement precision
If step motor positioning method is used, then focusing accuracy is improved, but focusing time increases
Solution Approach 1:
The system performs preliminary detection of the target object's depth information and pre-calculates the optimal lens position before actual focusing occurs. This advance preparation enables the lens to move directly to the correct position without iterative adjustments, reducing focusing time while maintaining accuracy.
Solution Approach 2:
The patent implements a feedback mechanism where the depth detecting unit continuously monitors the target object's position, and the calculated unit uses this feedback to determine the precise lens position, enabling accurate and rapid focusing through real-time information processing.
3Measurement precision
If multiple position testing is performed, then focusing accuracy is improved, but reliability deteriorates due to potential focusing failure
Solution Approach 1:
The patent introduces a depth detecting unit and a calculated unit as intermediaries between the lens and the target object. These intermediaries process spatial information and calculate optimal positioning parameters, enabling the lens to achieve accurate focus on the first attempt without requiring multiple position tests, thereby improving reliability.
Data Source
AI summary
A control method applied in an electronic apparatus including a projecting unit and a depth detecting unit is described. The projecting unit is able to project first multimedia data onto a target object. The method includes detecting depth information of the target object by using a depth detecting unit; calculating a second parameter of the projecting unit according to the depth information of the target object and a first parameter of the projecting unit; and moving the projecting unit to a first position based on the second parameter of the projecting unit to make the projecting unit project a first display picture of the first multimedia data. The focusing of the projector can be executed quickly and accurately.