Display Device Function Switching Without Dedicated Drivers
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Solution Overview
Problem
Existing display technologies lack the ability to seamlessly switch between different pointing devices, such as mice and digitizers, without requiring changes in device configuration or dedicated drivers, especially when operating systems or device versions differ.
Innovation Solution
A display system with a function device connected via USB standards, including a storage section for configuration information and a detector to assign coordinate data to interfaces, allowing users to switch the function of an indication body between a mouse and a digitizer without changing the configuration information itself, and recognizing multiple indication bodies without dedicated device drivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system uses dedicated device drivers for different pointing devices, then device recognition accuracy is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent implements a universal USB interface that can recognize and operate multiple types of indication bodies (mouse, digitizer, touch pen) without requiring dedicated device drivers for each device type. The system uses a single configuration information structure that adapts to different device functions, eliminating the need for separate driver installations while maintaining accurate device recognition and functionality.
2Reliability
If the system requires configuration changes when switching operating systems or device versions, then compatibility with specific systems is improved, but adaptability to different environments deteriorates
Solution Approach 1:
The patent employs parameter changes by modifying the configuration information content based on the detected device type and function, while maintaining the same USB interface structure. The system dynamically adjusts parameters such as device class, subclass, and protocol identifiers in the configuration information to match the specific indication body being used, enabling seamless operation across different operating systems and device versions without requiring reconfiguration or driver installation.
3Adaptability or versatility
If multiple indication bodies are supported simultaneously, then user flexibility is improved, but interface complexity increases
Solution Approach 1:
The patent segments the configuration information into distinct, standardized components (device class, subclass, protocol, interface descriptors) that can be independently configured for each indication body type. This segmentation allows the system to support multiple indication bodies simultaneously by assigning appropriate configuration parameters to each device through the USB interface, without creating overall system complexity. Each device type receives its specific configuration segment while sharing the common USB communication framework.
Data Source
AI summary
A display device is capable of switching a function of an indication body in accordance with the need of the user in the case in which the indication body is made to function as a pointing device. The display device is provided with a function device having a first interface. The configuration information of the first interface is stored in the storage section, and is supplied to a host device by a supply section via the function device. A change section is capable of change the configuration information in accordance with the operation of the user received by a reception section.