Projection Device With Dynamic Actuator Modes for Variable Resolution
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Solution Overview
Problem
Existing projection devices are limited in their ability to adjust the resolution of projected images due to fixed control mechanisms for actuators, restricting user flexibility and convenience.
Innovation Solution
A projection device with a spatial modulator, driving circuit, and control circuit that dynamically determines the swinging mode of optical actuators based on input video signals, allowing conversion into multiple sub-display frames and synchronization signals to adjust optical paths for variable resolutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If different actuators are used to swing optical elements to achieve different resolutions, then the resolution of the projection device can be increased, but the control manner of the actuator becomes fixed and the user cannot choose to project images with different resolutions
Solution Approach 1:
The patent applies the dynamics principle by making the control manner of the optical actuator adjustable rather than fixed. The control circuit is configured to adjust the control manner of the optical actuator based on different input video signals, enabling the system to dynamically adapt between different resolution projection modes. This allows the same hardware configuration to serve multiple resolution requirements without being locked into a single control mode.
Solution Approach 2:
The patent implements parameter changes by modifying the control parameters of the optical actuator according to the input video signal characteristics. The control circuit changes the control manner parameters (such as swing angle, swing frequency, or driving waveform) based on the resolution requirements of the input signal, thereby achieving different projection resolutions from the same physical actuator without hardware changes.
2Device complexity
If the control manner of the actuator is fixed, then the device structure can be simplified, but the user cannot choose to project images with different resolutions
Solution Approach 1:
The patent applies universality by designing the control circuit to perform multiple functions: it can control the optical actuator in different control manners (first control manner, second control manner, etc.) depending on the input video signal. This multi-functional control circuit eliminates the need for separate dedicated actuators for each resolution mode, thereby maintaining relatively simple device structure while achieving high adaptability for different projection resolutions.
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 flexible resolution selection and improved user convenience by allowing the projection device to adapt to different input video signal requirements, enhancing usage flexibility and image quality.
Implementation Method 1
drives the first optical actuator to swing according to the synchronization signal and the swinging mode of the first optical actuator to change a optical path of the image beam
Data Source
AI summary
A projection device and a projection method thereof are provided. The projection device includes a spatial modulator, a first optical actuator, a driving circuit, and a control circuit. The spatial modulator modulates a beam to generate an image beam. The driving circuit is coupled to the first optical actuator, determines a swinging mode of the first optical actuator according to an input video signal, and converts a display frame into sub-display frames corresponding to the swinging mode. The control circuit is coupled to the spatial modulator and the driving circuit, controls the spatial modulator to generate the image beam according to the sub-display frames, and outputs synchronization signals corresponding to the sub-display frames to the driving circuit. The driving circuit drives the first optical actuator to swing according to the synchronization signals and the swinging mode to change an optical path of the image beam to generate a projection image.