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Image display device and image display system

A technology of an image display device and a display part, which is applied in the fields of instruments, computing, electrical and digital data processing, etc., can solve problems such as troublesomeness, switching cursors not to be displayed, etc., and achieve the effect of improving convenience

Inactive Publication Date: 2015-03-11
SHARP KK
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In addition, in order to switch the display / non-display of the cursor, the user needs to operate, and there is a troublesome problem

Method used

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  • Image display device and image display system
  • Image display device and image display system
  • Image display device and image display system

Examples

Experimental program
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Embodiment Construction

[0037] In the following embodiments, the same reference numerals are given to the same components, and their names and functions are also the same. Therefore, detailed descriptions about them are not repeated.

[0038] refer to figure 1 , the image display system 100 according to the embodiment of the present invention includes an image display device 200 , a first terminal device 300 , a second terminal device 400 , and a wireless router 500 . The image display device 200 and the wireless router 500 are connected to a communication network (including a LAN and the Internet. Hereinafter, simply referred to as a network) 510 by wire. The image display device 200 is, for example, a large-screen electronic blackboard device capable of drawing by touch operations. The first terminal device 300 and the second terminal device 400 are portable terminal devices. The first terminal device 300 and the second terminal device 400 are, for example, a tablet device having a display scree...

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PUM

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Abstract

An image display device (200) is provided with a display unit (210), a communication interface unit (218), and a CPU (202). If the communication interface unit (218) receives data representing that an external device has been operated, the CPU (202) displays a corresponding cursor upon the display unit (210). If the communication interface unit (218) does not receive data representing that the external device has been operated for a predetermined amount of time, the CPU (202) deletes the corresponding cursor from the display unit (210). If the communication interface unit (218) receives an instruction for a special display from the external device, the CPU (202) displays the corresponding cursor upon the display unit (210) in a special mode. As a result, a cursor that has not been operated for a predetermined amount of time can be automatically deleted, and it is possible to display the cursor in a special mode.

Description

technical field [0001] The present invention relates to an image display device used in conferences and presentations, and more particularly to an image display device and an image display system capable of operating a cursor displayed on a screen by an external device. Background technique [0002] In recent years, electronic blackboards, which are one type of touch-drawing image display devices and used in conferences and the like, have been put into practical use in various configurations. In particular, an electronic blackboard device configured as a computer system by combining an image display device having a large display screen and an input device for detecting two-dimensional position coordinates such as a touch panel is used. Large-scale electronic blackboard devices are also used for presentations and the like. [0003] In general, an electronic blackboard device sequentially reads information on position coordinates and movement amounts designated by a pen or th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/0481G06F3/041
CPCG06F3/04883G06F2203/04801G06F1/1694G06F3/033
Inventor 永田义典
Owner SHARP KK
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