Wireless control laser pen with user identification as well as multiuser light spot recognition system

A technology of user identity identification and wireless control, which is applied in the direction of signal transmission system, educational equipment, input/output process of data processing, etc.

Active Publication Date: 2008-09-03
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not difficult to see from this that the difficulty of this application lies in firstly having a way to distinguish each wireless control device, and secondly being able to identify and respond to the operations of multiple devices without interfering with each other. The existing technology cannot solve these two problems

Method used

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  • Wireless control laser pen with user identification as well as multiuser light spot recognition system
  • Wireless control laser pen with user identification as well as multiuser light spot recognition system
  • Wireless control laser pen with user identification as well as multiuser light spot recognition system

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Embodiment Construction

[0051] The device of the present invention is a wireless control laser pointer with user identification, which can be used in multiple branches, and a receiver for receiving radio signals sent by the laser pointer. The application system of the device also includes a projector and a camera for capturing the projection screen. And computers with laser point recognition, mouse event synthesis, and user differentiation. The receiver for receiving the electrical signal sent by the laser pointer includes a radio signal receiving and decoding module, a high-low level conversion circuit connected to the output end of the radio signal receiving and decoding module, and a high-low level conversion circuit connected to the output end of the high-low level conversion circuit A computer processing circuit solidified with signal processing and USB chip program control, and a USB transmission interface module connected to the output end of the single-chip microcomputer; the computer is conne...

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PUM

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Abstract

The invention relates to a wireless control laser pen with a user label, and the field of user light spot recognition technology. The invention is characterized in that the wireless control laser pen is composed of a laser pen case, a laser emitting circuit and a wireless emitting circuit, and has holding, writing, etc. operating ways; the wireless signal receiver is composed of a wireless signal receiving and processing circuit, a high-low level conversion circuit and a single chip computer; the computer receives the wireless signals of the wireless signal receiver and recognizes the corresponding user label ID and operating signals, in order to determine the user using a trigger type laser pen for matching the user with a light spot track when multiple users use in parallel, thus to distinguish multiple users and support conflict-free parallel usage of multiple users. The invention can be applied to a projection big screen used by multiple users at the same time, and a conference discusses place interacting with a screen.

Description

technical field [0001] The invention relates to the technical field of wirelessly controlled laser pointers for projectors and multi-user light spot identification, in particular to the technical field of wirelessly controlled laser pointers and identification systems that can identify users and can be used in multiples. Background technique [0002] At present, projectors and computers have been widely used in multi-person conferences, business presentations, multimedia interactive teaching, military decision-making, etc. In these applications, traditional computer-controlled equipment keyboards and mice cannot well meet the needs of human-computer interaction , because they are designed for personal computer use, and the user needs to be in front of the computer when using these two devices. The introduction of wireless technology expands the user space and solves this problem well. For example: in Chinese patents 01273503.5 and 02233227.8, the use distance of the keyboard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/033G06F3/042G09B17/02G08C17/02G06F3/0346
Inventor 史元春姜浩张亮
Owner TSINGHUA UNIV
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