Portable interactive whiteboard module

摘要

A system for determining a touch point's location within a user-definable region is provided. The system comprises plural modules. In a set-up stage, a user positions each module to define a peripheral point of the region. Exemplarily, a module comprises a means for detecting alignment between the module and another one, a means for measuring an inter-module distance, and a means for making wireless data communication. In particular, the detecting of the alignment and the measuring of the inter-module distance are configured to be performed without physically connect the two modules together. Hence, a geometric coordinate of the module relative to the other one is determinable without a need to physically connect the two modules. The system can thereby be compactly packed for traveling to give an advantage of high portability to a portable interactive whiteboard system that incorporates such system.

主权项

1. A system for determining a touch point's location within a user-definable region, the system comprising plural modules configured to be movable for a user to define plural peripheral points of the region, an individual module comprising:
an optical hardware unit comprising a light emitter for generating a substantially-directional probe light beam, and a light detector for detecting a received probe light beam, the optical hardware unit being configured for measuring an inter-module distance between the individual module and another individual module, determining a relative orientation between the individual module and said another individual module, and wirelessly communicating data with said another individual module, wherein the relative orientation is a direction that the individual module points towards said another individual module, whereby the inter-module distance, the relative orientation and the wirelessly-communicated data are usable in determining a geometric coordinate of the individual module relative to said another individual module;wherein the measuring of the inter-module distance and the determining of the relative orientation are configured to be performed without a need to physically connect the individual module and said another individual module together, so that the geometric coordinate of each individual module is determinable without a need to have a physical connection between any two of the modules.