Hand Shake Compensation for 3D Remote Control Input
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Solution Overview
Problem
Conventional remote controllers for terrestrial digital television systems are limited in their ability to accurately select images in three-dimensional space due to hand shake movements, making it difficult to quickly and correctly choose desired icons.
Innovation Solution
An input device with an operating section, calculation section, and output section that detects and compensates for hand shake movements, allowing for precise operation in three-dimensional space by calculating a hand shake related value and outputting it as an operation signal to control the selection of images on a television receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a remote controller detects user operation in three-dimensional free space to enable direct pointer movement, then the ease of operation is improved, but hand shake causes the pointer to move in unintended directions reducing reliability
Solution Approach 1:
The system detects hand shake movements through acceleration sensors and uses this feedback information to calculate compensation values. The compensation values are applied to counteract the detected hand shake, allowing the pointer to remain stable despite physical movement of the remote controller. This feedback mechanism transforms the harmful hand shake effect into useful compensation data.
Solution Approach 2:
The patent introduces a calculation section that acts as an intermediary between the detection section (sensors) and the output section (pointer control). This intermediary processes the raw sensor data, separates intended movement from hand shake, and generates compensated control signals. The calculation section mediates the conflict between free-space operation capability and selection accuracy.
2Adaptability or versatility
If the remote controller operates in three-dimensional free space without support surfaces, then the adaptability is improved, but the stability of operation is reduced due to hand shake
Solution Approach 1:
The patent replaces the mechanical stability requirement (support surface contact) with a sensor-based detection and calculation system. Instead of relying on mechanical contact for stability, the system uses acceleration sensors to detect movements and calculation algorithms to compensate for hand shake. This substitution enables stable operation in free space without physical support.
Solution Approach 2:
The system changes the operational parameters by introducing compensation values calculated from acceleration data. By dynamically adjusting the pointer position based on detected acceleration patterns, the system maintains stability across varying operational conditions including free-space movement, thereby adapting to different usage scenarios while maintaining control accuracy.
Data Source
AI summary
An input device includes: an operating section which is held by a user and operated in a three-dimensional free space in order to operate an information processing apparatus by remote control; a calculation section which calculates a hand shake related value for controlling selection of an image to be controlled which is displayed on the information processing apparatus, the hand shake related value being relevant to an amount of hand shake of the operating section; and an output section which outputs the hand shake related value as an operation signal for operating the information processing apparatus by remote control.