Persistence-of-vision display with stylus input
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Solution Overview
Problem
Current persistence-of-vision display technologies do not effectively allow users to interactively draw or create images using a stylus, limiting user engagement and creativity.
Innovation Solution
A persistence-of-vision display device equipped with a rotating armature, sensors, and light sources, where a stylus input is coupled through a transparent housing to identify angular locations and illuminate corresponding light sources, allowing users to create dynamic drawings by tracing paths on the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a stylus input device is integrated with persistence-of-vision display, then user interaction capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the stylus input device with the persistence-of-vision display by integrating sensors into the display housing. The sensors detect stylus inputs and the control unit coordinates both display and input functions, combining two separate systems into one unified device that enables interactive drawing without requiring external input devices
Solution Approach 2:
The display device achieves multi-functionality by serving both as a persistence-of-vision display and as an input device. The same housing that displays images also contains sensors for receiving stylus inputs, allowing the device to perform both display and input functions simultaneously, thereby improving ease of operation while managing complexity through functional integration
2Adaptability or versatility
If multiple sensors and light sources are integrated on the armature, then interactive drawing capability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the armature into distinct sections with sensors and light sources positioned at specific angular locations. This segmentation allows for modular assembly where sensors and light sources can be independently positioned and assembled at different radial distances from the rotation axis, simplifying the manufacturing process while enabling complex interactive drawing capabilities
Solution Approach 2:
The patent employs a nested structure where sensors and light sources are arranged at different radial distances from the rotation axis, with inner components nested within the space defined by outer components. This nested arrangement allows compact integration of multiple functional elements while maintaining ease of manufacture through standardized assembly procedures
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 interactive drawing and animation on the display, utilizing the persistence-of-vision effect to create the impression of continuous light, allowing users to create and manipulate images in real-time with selected colors and movements.
Implementation Method 1
A persistence-of-vision display device includes a base unit, a display housing, and an armature. The base unit is configured to rotate the armature. A plurality of light sources and a plurality of sensors are disposed on the armature. The light sources are strobed or flashed at a given location to create the appearance of continuous light at that location due to persistence of the image of the light in an observer's vision.
Implementation Method 2
A stylus input device is configured to provide input signals to the sensors via the display housing. The tip of the stylus is energized to provide a signal from the tip through the display housing to the sensors.
Data Source
AI summary
A persistence-of-vision display device that is configured to receive inputs via a stylus and methods for its use are described. The device includes a display housing with a rotating armature disposed therein. The armature includes arrays of light sources and sensors. A stylus is provided that is useable to provide input through the display housing in a manner similar to drawing on the housing. Angular locations of the inputs are identified and corresponding light sources are illuminated. The impression of drawing on the display device is thus provided. Controls for color selection, animation, and other features are provided.