Pen Stylus Layout With Optical Mouse Control in a Narrow Body
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Solution Overview
Problem
Existing styli for touch-enabled devices are limited in functionality, often obstructive, and require additional devices like wireless mice for cursor control, which is not intuitive.
Innovation Solution
Integration of an optical mouse unit into a stylus, allowing cursor control through surface movement detection and pressure sensing for mouse clicks, eliminating the need for separate buttons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mouse is made pen-shaped to improve portability and writing functionality, then the device can be carried in a pocket and used for writing/reading/pointing, but the internal components (battery, circuit board, sensor) cannot be accommodated within the narrow pen body
Solution Approach 1:
The patent implements nesting by placing the battery (first nested object) inside the hollow pen body, then placing the circuit board (second nested object) inside the battery cavity, and finally placing the sensor (third nested object) inside the circuit board area. This multi-level nesting arrangement allows all essential components to fit within the limited pen-shaped volume while maintaining functional integrity.
2Ease of operation
If the mouse is designed as a pen shape with narrow body, then it can be carried in a pocket, but the battery capacity is limited due to space constraints
Solution Approach 1:
The patent maximizes battery capacity within the pen-shaped constraint by implementing nested arrangement where the battery is placed inside the hollow pen body, and other components (circuit board, sensor) are nested inside or around the battery area. This efficient space utilization allows the battery to occupy the maximum possible volume while maintaining the portable pen shape.
Solution Approach 2:
The patent addresses battery capacity limitations by changing the physical arrangement parameters - using a hollow pen body structure with internal cavities optimized for battery placement, and arranging other components in nested configurations around the battery to maximize the battery's volume fraction within the device.
3Volume of moving object
If all components (battery, circuit board, sensor) are arranged inside the pen body, then the device structure becomes compact, but the arrangement becomes extremely complex and difficult to assemble
Solution Approach 1:
The patent systematically reduces arrangement complexity by establishing a clear nested hierarchy: battery inside pen body hollow space, circuit board inside battery cavity, sensor inside circuit board area. This structured nesting approach provides a logical assembly sequence and simplifies the overall component arrangement within the compact pen body.
Solution Approach 2:
The patent divides the pen body into distinct functional zones - the hollow body space for battery placement, the battery internal cavity for circuit board placement, and the circuit board area for sensor placement. This segmentation creates clearly defined mounting areas for each component, reducing the complexity of spatial arrangement and assembly.
Data Source
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AI summary
An apparatus and method for providing a structure and function, respectively, to a stylus handheld writing, reading or pointing device to enable usage of the device to perform operations similar to a computer mouse for a computing device. The structure includes an optical sensor, a pressure sensing element for sensing a pressure to detect a mouse click action and an orientation sensor to switch the stylus from a stylus operation mode to a mouse operating mode.