Handheld Device Forward Direction Determination Using Sensor Bias Compensation
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Solution Overview
Problem
Current user interfaces for media systems, such as televisions and remote controls, are cumbersome and complex, making it difficult for users to efficiently select from a large number of media items due to the lack of innovation in design since the number of channels and content options have increased significantly, leading to user interface bottlenecks and usability issues.
Innovation Solution
A method and device for dynamically determining the forward pointing direction of a handheld device, such as a 3D pointing device, using sensor outputs like linear acceleration and angular velocity, which allows for improved cursor movement and user interface interaction by compensating for biases and inaccuracies in sensor outputs, enabling more comfortable and accurate control of media systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional remote control interfaces are used with increasing number of channels and content options, then more media content can be provided to users, but the user interface becomes more complex and difficult to operate
Solution Approach 1:
The patent replaces traditional mechanical button-based remote control interfaces with a 3D pointing device that uses spatial motion and orientation to navigate media content. Instead of pressing multiple buttons to navigate menus, users physically point and gesture in 3D space, transforming the interaction from complex button sequences to intuitive spatial movements. This substitution reduces perceived interface complexity while maintaining access to large numbers of content options.
2Measurement precision
If sensor outputs are used to determine forward pointing direction, then accuracy of pointing direction can be improved, but computational complexity increases due to bias compensation requirements
Solution Approach 1:
The system performs preliminary calibration to determine bias values for the sensors before actual operation. By pre-characterizing the sensor biases during a calibration phase, the system avoids complex real-time bias compensation calculations during normal pointing operations. The pre-determined bias values are stored and applied straightforwardly during operation, reducing computational complexity while maintaining accuracy.
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
This solution simplifies the user interface by dynamically adjusting to how the user holds the device, improving accuracy and comfort, and allowing seamless control of integrated media systems without the need for complex button navigation, thereby enhancing the user experience and facilitating the use of multiple media devices.
Implementation Method 1
A forward pointing direction associated with a handheld device is estimated or determined by, for example, calculating a center of rotation of the device. A resultant combined or selected bias estimate may then be used to compensate the biased output of the sensor in, e.g., a 3D pointing device.
Implementation Method 2
receiving, by a processor, sensor outputs associated with linear acceleration and angular velocity of the device
Data Source
AI summary
A forward pointing direction associated with a handheld device is estimated or determined by, for example, calculating a center of rotation of the device. A resultant combined or selected bias estimate may then be used to compensate the biased output of the sensor in, e.g., a 3D pointing device.