Interactive Projector Device Using Accelerometer Orientation
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Solution Overview
Problem
Existing information handling systems lack interactive capabilities that allow users to efficiently and accurately interact with projected images, such as writing or erasing on a screen, without interfering with the display.
Innovation Solution
An interactive projector system comprising an interactive device with an accelerometer, processor, memory, transmitter, sensors, and buttons that communicate wirelessly with a projector to determine orientation and coordinate information from an invisible grid, enabling users to send write or erase requests based on sensor data, allowing for interactive projection operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pen with sensor is used to capture grid pixels for interaction, then user interaction capability is improved, but device complexity increases due to additional sensors and processing requirements
Solution Approach 1:
The patent introduces an interactive projector as an intermediary device that projects invisible grid patterns onto the display surface. This intermediary system mediates between the user's physical actions and the digital content, enabling interaction without requiring complex sensors in the pen or display device. The grid pattern serves as a mediator that translates physical location into digital coordinates.
Solution Approach 2:
The patent replaces the mechanical sensor-based positioning system with an optical projection system. Instead of using sensors to detect position, the system projects a visual grid pattern and uses image processing to determine coordinates. This substitution eliminates the need for complex mechanical sensors while maintaining interaction capability.
2Measurement precision
If invisible grid patterns are projected for coordinate detection, then measurement precision is improved, but the projector system complexity increases due to additional projection layers
Solution Approach 1:
The patent merges the invisible grid pattern projection with the visible display content in a single projection output. The grid pattern is overlaid on the same surface as the display content, combining two functions (content display and coordinate reference) into one projection system. This merging reduces overall system complexity compared to separate projection systems.
Solution Approach 2:
The patent uses invisible or low-contrast grid patterns that are projected in wavelengths or intensities not easily perceived by the human eye. This allows the grid to serve its measurement function without interfering with the visible display content, effectively using optical property changes to separate the two functions visually while maintaining them in the same physical system.
3Adaptability or versatility
If multiple sensors and buttons are added to the interactive device, then interaction functionality is improved, but manufacturing cost increases
Solution Approach 1:
The patent designs the interactive projector to perform multiple functions: displaying content, projecting the grid pattern, detecting user interactions, and processing coordinate information. By making the projector universal and multi-functional, the system eliminates the need for separate dedicated interaction devices, reducing overall manufacturing costs while maintaining comprehensive interaction functionality.
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 users to interactively write or erase on projected images by determining the size, shape, and location of the projection, enhancing user engagement and efficiency in information handling systems.
Implementation Method 1
an accelerometer operable to determine orientation information of the interactive device
Implementation Method 2
a sensor operable to receive coordinate information of a coordinate grid projected onto a surface by the projector
Data Source
AI summary
An interactive device includes a first sensor, a first button, an accelerometer, a processor, and a transmitter. The first sensor is configured to receive coordinate information from a coordinate projection of a projector. The first button is configured to transmit an erase signal when the first button is pressed. The accelerometer is configured to provide angle information for the interactive device. The processor is in communication with the first sensor, with the first button, and with the accelerometer. The processor configured to receive the coordinate information from the first sensor, to receive the erase signal from the first button, to receive the angle information from the accelerometer, and to generate erase information based on the coordinate information, the erase signal, and the angle information. The transmitter is in communication with the processor, and is configured to transmit a delete request including the erase information received from the processor to the projector.