3D Operation Input Device Pyramid Spatial Plane
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Solution Overview
Problem
Existing operation input devices require users to move a pointing device to a fixed spatial plane, limiting usability and accuracy, especially for operators with different physical constitutions and positions relative to the display screen, and fail to allow direct input of objects outside the screen.
Innovation Solution
A three-dimensional operation input system that detects the position and movement of a pointing device within a virtual pyramid-shaped space defined by the display screen and a reference point, allowing input from any position and differentiating intended operation movements from accidental ones, enabling input on both the screen and extended areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed spatial plane is used for operation input, then the device structure is simple, but the ease of operation deteriorates because operators with different physical constitutions and positions cannot operate comfortably
Solution Approach 1:
The patent applies dynamics by making the spatial plane for operation input movable rather than fixed. The control unit dynamically adjusts the spatial plane based on the detected position of the pointing device, allowing the input plane to follow the operator's hand position. This resolves the contradiction by enabling ease of operation for operators with different physical constitutions while maintaining relatively simple device structure through software-based adaptation.
Solution Approach 2:
The patent changes the parameter of the spatial plane position from fixed to variable. By detecting the position of the pointing device and adjusting the spatial plane parameters accordingly, the system adapts to different operators and positions. This parameter change enables improved ease of operation without requiring complex hardware modifications.
2Measurement precision
If the spatial plane is fixed at a predetermined position, then the device structure is simple, but the measurement precision deteriorates because the angle with respect to the spatial plane varies with operator position
Solution Approach 1:
The system dynamically adjusts the spatial plane to maintain consistent measurement geometry. By making the input plane movable and aligning it with the pointing device position, the system maintains accurate angle relationships regardless of operator position, thereby improving measurement precision without requiring complex calibration procedures.
Solution Approach 2:
The patent implements feedback by continuously detecting the position of the pointing device and using this information to adjust the spatial plane. This closed-loop approach ensures that the spatial plane remains optimally positioned for accurate measurement, improving precision while keeping the device structure relatively simple through software control.
3Reliability
If every movement of the pointing device in the spatial plane is treated as operation input, then the ease of operation is simple, but reliability deteriorates because erroneous operation input may occur
Solution Approach 1:
The patent applies preliminary action by requiring the pointing device to enter the spatial plane before operation input is recognized. This preliminary condition (entering the plane) acts as a gatekeeper, ensuring that only intentional movements are registered. This improves reliability by filtering out accidental movements while maintaining ease of operation through natural pointing gestures.
Solution Approach 2:
The spatial plane itself acts as an intermediary between the pointing device and the operation input system. By requiring the device to enter this intermediate zone before triggering input, the system distinguishes between intentional and accidental movements. This mediator approach improves reliability without complicating the operation method.
4Productivity
If contact-type input devices are used, then the ease of operation is simple, but productivity deteriorates because multiple devices are required for different operations and frequent hand release is needed
Solution Approach 1:
The patent merges the functions of multiple input devices into a single non-contact pointing device system. By detecting three-dimensional position and enabling operation through spatial plane interaction, the system combines positioning, selection, and input functions that previously required separate devices like keyboard and mouse. This improves productivity by enabling continuous operation without hand release while maintaining ease of operation through natural pointing gestures.
Solution Approach 2:
The patent replaces mechanical contact-type input devices with a non-contact optical detection system. By using light-based position detection instead of physical contact, the system eliminates the need for multiple devices and frequent hand release, thereby improving productivity while maintaining or enhancing ease of operation through more natural hand-free gestures.
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
Enhances usability by eliminating the need to move the pointing device to a fixed plane, reduces error occurrence, and allows direct input of objects outside the screen without reducing the size of the indicating area, thus improving human interface operability.
Implementation Method 1
a three-dimensional position detecting means for detecting a three-dimensional position of an object
Data Source
AI summary
A three-dimensional image sensor for detecting the three-dimensional position of an object, a coordinate detection unit for detecting the coordinate position of an objective point on a display screen based on the position of the object in a virtual pointing space, a movement detection unit for detecting the three-dimensional movement of the object in the pointing space, and an operation input contents determination unit for determining an operation based on the three-dimensional movement or the like of the object are provided, so that the inconvenience of moving a pointing device such as a finger to a fixed spatial plane is avoided by setting the pointing space which can be operated by the pointing device as a pyramid shape defined by connecting the display screen and a reference point.