Touch-Sensing Surface Gesture Recognition for Remote Control
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Solution Overview
Problem
Conventional remote control devices are limited to single button presses and lack the ability to detect and interpret gestures, restricting user interaction with playback devices to simple, discrete commands.
Innovation Solution
A remote controller device equipped with a touch-sensing surface and touch-processing logic that detects gestures such as swipes, taps, and pinches, converting these inputs into control information to remotely control content management devices via a communication interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional button-based remote control is used, then the device structure is simple and easy to manufacture, but the user interaction capability is limited to single button presses
Solution Approach 1:
The patent replaces the mechanical button-pressing system with a capacitive touch-sensing system. The touch-sensing surface uses electrical field detection (capacitive sensing) to detect finger gestures, substituting mechanical contact with electrical field interaction. This enables gesture recognition (swipes, taps, pinches) while maintaining a flat, simple physical structure that is easy to manufacture.
2Adaptability or versatility
If gesture detection is added to remote control, then the control functionality is enhanced, but the device complexity increases
Solution Approach 1:
The touch-sensing surface serves multiple functions: it detects various gesture types (swipes in different directions, taps, pinches), identifies gesture locations, determines gesture velocities, and distinguishes between different user inputs. This multi-functional capability is achieved through a unified capacitive sensing array that processes all gesture recognition tasks, avoiding the need for separate sensors for each gesture type and thereby limiting the increase in device complexity.
Solution Approach 2:
The patent transitions from zero-dimensional point contact (button presses) to two-dimensional surface interaction (gesture recognition across the touch-sensing surface). The capacitive sensor array is arranged in a grid pattern that detects touch position, direction, and movement across the surface area, enabling rich gesture vocabulary without proportionally increasing component count through spatial arrangement and signal processing algorithms.
3Measurement precision
If touch-sensing surface with sensor array is implemented, then gesture recognition precision is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent achieves high gesture detection precision by varying and measuring multiple electrical parameters of the capacitive sensor array: capacitance values at different sensor elements, rate of change of capacitance (dC/dt), touch pressure levels, and gesture velocity calculations. These parameter variations are processed to distinguish between different gesture types and characteristics, achieving high precision through electrical parameter analysis rather than mechanical precision.
Solution Approach 2:
The touch-sensing surface uses a uniform grid array of capacitive sensors with identical construction and characteristics across the entire surface. This homogeneity simplifies manufacturing by allowing mass production of identical sensor elements that are then arranged in a regular pattern, reducing the need for complex individual calibration or positioning while maintaining consistent detection precision across the whole surface.
Data Source
AI summary
As discussed herein according to one configuration, a remote controller device includes a touch-sensing surface, touch processing logic, and a communication interface. The touch-sensing surface includes an array of sensors to detect a gesture inputted by a subscriber indicating how to control settings of a content management device. The touch processing logic processes the detected gesture and converts the detected gesture into control information. The communication interface of the remote controller device transmits the control information over a communication link to control settings of the content management device. Gesture-based remote control as discussed herein provides more advanced control compared to conventional button-type remote control techniques.