Touchscreen Electrostatic Uplink for Faster Stylus Pairing
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Solution Overview
Problem
Existing pairing methods for computing devices with peripheral devices, such as styluses, often require manual effort and suffer from latency due to the angle or position of the stylus relative to the computing device, leading to delayed application of preferred settings and haptic feedback.
Innovation Solution
Utilizing two different sets of touch-sensing electrodes on a touch-sensitive display device to transmit and receive electrostatic signals, expanding the detectable range and increasing signal strength for faster and more efficient data exchange with peripheral devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single set of touch-sensing electrodes is used for electrostatic communication, then the device structure remains simple, but the detectable range and signal strength are limited causing pairing latency
Solution Approach 1:
The touch-sensing electrode structure is segmented into multiple independent electrode groups (first touch-sensitive input device and second touch-sensitive input device), each capable of transmitting electrostatic signals. This segmentation allows the system to utilize multiple electrodes simultaneously for communication, expanding the detectable range and improving pairing speed without requiring a completely new electrode architecture
Solution Approach 2:
The touch-sensing electrodes are designed to serve multiple functions: they act as both touch input sensors for user interaction and as communication transmitters for electrostatic signal exchange with peripheral devices. This multi-functionality allows the existing electrode structure to be leveraged for both input detection and data communication, improving pairing speed without adding separate dedicated communication electrodes
2Reliability
If the stylus is positioned at certain angles or distances from the computing device, then manual pairing may be simpler, but electrostatic signal detection is delayed or fails
Solution Approach 1:
The system transitions from relying on a single point-to-point electrostatic connection to a multi-dimensional detection field created by multiple electrode groups. This allows the peripheral device to be detected from various angles and distances, as the electrostatic field extends across multiple spatial dimensions, making pairing more reliable regardless of stylus position while maintaining ease of operation
3Area of stationary object
If electrostatic signals are transmitted through a single touch-sensitive input device, then the signal transmission path is simple, but the detectable range is limited
Solution Approach 1:
Multiple electrode groups from different touch-sensitive input devices are merged into a unified communication system. The electrodes work together to create an extended electrostatic field that covers a larger spatial area, allowing the peripheral device to be detected from greater distances and angles. This merging approach expands the detectable range while keeping the transmission protocol relatively simple
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
Enables quicker pairing and more efficient data communication between touch-sensitive display devices and peripheral devices by expanding the detectable range and strength of electrostatic signals, reducing latency and ensuring immediate application of user preferences.
Implementation Method 1
transmitting electrostatic signals, expanding the detectable range and increasing signal strength
Data Source
AI summary
A touch-sensitive display device comprises: a first touch-sensitive input device comprising touch-sensitive display including a first plurality of touch-sensing electrodes, and a second touch-sensitive input device including a second plurality of touch-sensing electrodes. A peripheral device uplink controller is configured to receive a command to transmit outgoing computer data from the touch-sensitive display device to a separate peripheral device via an electrostatic uplink. The outgoing computer data is transmitted via the first plurality of touch-sensing electrodes of the touch-sensitive display by driving the first plurality of touch-sensing electrodes with an encoded electrostatic drive signal. The outgoing computer data is transmitted via the second plurality of touch-sensing electrodes of the second touch-sensitive input device by driving the second plurality of touch-sensing electrodes with the encoded electrostatic drive signal.