Reverse-Mounted Touchpad for Ergonomic Cursor Control
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Solution Overview
Problem
Conventional touchpads on laptops and small portable devices often interfere with users' arm positioning, causing discomfort and space issues, especially in confined spaces like airplanes, and do not fit in miniaturized keyboards, necessitating less precise touch-screen cursor control.
Innovation Solution
A reverse-mounted touchpad on the display's backside with buttons on the front edge, allowing users to operate cursor controls with extended arms without consuming keyboard space, and optionally adding this configuration to laptops for improved ergonomics and usability in tight spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional touchpad is located in the center of the keyboard closest to the user, then the touchpad is easily accessible, but the user's elbows interfere with neighbors in adjacent seats when using the touchpad in confined spaces
Solution Approach 1:
The touchpad is relocated from the traditional horizontal plane (keyboard center) to the vertical dimension (backside of the display panel). This dimensional shift allows users to operate the touchpad with their hand reaching around from the front, keeping elbows tucked in and away from neighbors in confined seating arrangements.
2Volume of moving object
If the keyboard is miniaturized to fit small portable devices, then the device size is reduced, but there is no room for a conventional touchpad cursor control
Solution Approach 1:
The touchpad functionality is moved to the backside of the display panel, utilizing the vertical space behind the screen rather than consuming horizontal keyboard real estate. This allows miniaturized devices to maintain precise cursor control capabilities without increasing their footprint.
Solution Approach 2:
The backside of the display panel, which traditionally serves only as a mounting surface, is repurposed to host the touchpad functionality. This multi-functional use of the display assembly allows small devices to include a conventional touchpad without adding volume.
3Ease of operation
If a touch screen is used instead of a conventional touchpad in small portable devices, then cursor control is provided, but fine cursor positioning is difficult and cost increases
Solution Approach 1:
Instead of using a touch screen interface for cursor control, the invention replicates the familiar conventional touchpad experience on the backside of the display. This provides precise cursor positioning through traditional finger-dragging mechanics while avoiding the cost and precision limitations of touch screen technology.
Data Source
AI summary
A portable computer is described including a reverse-mounted touchpad and associated buttons where the touchpad is mounted on the reverse surface of the panel containing the portable computer's display and facing away from the user. One or more associated buttons are mounted on the surface of the display panel facing the user and function as the buttons normally associated with a touchpad, traditionally called the “mouse buttons”. The buttons are mounted in close proximity to the reverse-mounted touchpad such that the user can operate both the touchpad and the buttons simultaneously with a finger and the thumb of the same hand.