Active Stylus Dynamic Data Format Adaptation
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Solution Overview
Problem
Conventional systems with active styluses and sensor controllers face inefficiencies in transmitting interactive data due to a fixed data format, which cannot flexibly adapt to changing stylus functionality, leading to inefficient communication.
Innovation Solution
Implementing two-way communication between the active stylus and sensor controller, where the sensor controller sends a beacon signal, and the stylus responds with capability information and sends data signals in formats determined by the available interactive data, allowing efficient transmission of frequently changing data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed data format is used for transmission from stylus to sensor controller, then communication protocol simplicity is improved, but adaptability to different stylus functionalities and transmission efficiency deteriorate
Solution Approach 1:
The data format is made dynamic and configurable rather than fixed. The stylus controller configures the data format based on which interactive data acquisition functions are actually implemented in the stylus. This allows the communication protocol to adapt its structure to match the specific capabilities of each stylus, improving both efficiency and adaptability while maintaining reasonable simplicity through automated configuration.
Solution Approach 2:
The patent changes the parameters of the data format (such as which fields are included, data types, and transmission intervals) based on the stylus's functional capabilities. By dynamically adjusting these parameters according to the actual interactive data acquisition functions present, the system achieves efficient transmission without unnecessary data fields, resolving the contradiction between simplicity and adaptability.
2Loss of information
If all interactive data is transmitted periodically, then data completeness is improved, but transmission efficiency and power consumption deteriorate
Solution Approach 1:
The patent extracts and transmits only the interactive data that is actually acquired by the stylus, removing unnecessary data fields from the transmission format. By configuring the data format to include only relevant interactive data based on the stylus's functional capabilities, the system maintains data completeness for acquired functions while eliminating waste in transmission, thereby improving efficiency without sacrificing necessary information.
Solution Approach 2:
Instead of transmitting all possible interactive data types periodically, the system transmits only the partial set of interactive data that the stylus actually acquires. This partial action approach avoids excessive transmission of unused data, improving efficiency while maintaining completeness of the actually acquired interactive data through targeted transmission.
3Adaptability or versatility
If data format includes all possible interactive data types, then future compatibility is improved, but current transmission efficiency and processing overhead deteriorate
Solution Approach 1:
The data format is dynamically configured to include only the interactive data types that the stylus actually supports and acquires. This dynamic configuration allows the system to maintain future compatibility through a可扩展的 framework while minimizing current processing overhead by excluding unnecessary data fields from transmission and processing.
Solution Approach 2:
The patent changes the data format parameters (included fields, data structures, transmission intervals) based on the actual interactive data acquisition capabilities of the stylus. This parameter adaptation reduces processing overhead by matching the data format to actual needs, while the configurable nature of the format preserves future compatibility as new stylus capabilities are developed.
Data Source
AI summary
A method is provided for using an active stylus and a sensor controller that engage in two-way communication with each other. The sensor controller sends a beacon signal BS indicating reference time of a frame F. After detecting the beacon signal BS, the active stylus sends, included in a response signal to the beacon signal BS, a hash value CP_Hash associated with capability information indicating the type of one or more pieces of interactive data DF that can be obtained by the active stylus. The active stylus periodically sends data signals DF1,DF2, and so on, which include at least part of the one or more pieces of interactive data DF and which are configured in a format determined based on the one or more pieces of interactive data DF.