Large-size matrix-scanning-type infrared touch input device

A technology of infrared touch and input equipment, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve problems such as troublesome maintenance, and achieve the effects of convenient maintenance and use, cost saving, and simple wiring

Active Publication Date: 2010-09-15
ANHUI HONGCHENG OPTO-ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] It can be seen that the maintenance

Method used

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  • Large-size matrix-scanning-type infrared touch input device
  • Large-size matrix-scanning-type infrared touch input device
  • Large-size matrix-scanning-type infrared touch input device

Examples

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Example Embodiment

[0030] Such as figure 1 , figure 2 As shown, the structural layout diagram and logical block diagram of the infrared touch input device of the present invention are shown. According to an embodiment of the present invention, the infrared touch input device mainly includes a main control module, an infrared transmitting and receiving unit, and a switching module. The infrared transceiver unit consists of a transmitting module corresponding to the position (such as figure 1 Send 0-send 6) and a receiving module (such as figure 1 In the form of 收0-收6), such as figure 1 The transmitting module (send 0) and the receiving module (receive 0) in the module form an infrared transceiver unit. The transmitting module and the receiving module respectively contain multiple infrared transmitting tubes and multiple infrared receiving tubes. The transmitting module and the receiving module are arranged in sequence along the periphery of the whiteboard so that one transmitting module correspo...

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Abstract

The invention relates to a large-size matrix-scanning-type infrared touch input device which comprises a main control module, a group of transmitting modules and a group of receiving modules. The transmitting modules are connected with the main control module and contain a plurality of infrared transmitting tubes, the receiving modules are connected with the main control module and contain a plurality of infrared receiving tubes, and the transmitting modules and the receiving modules are sequentially arranged along the periphery of a white board so that a transmitting module corresponds to a receiving module along the transversal direction or the longitudinal direction. The main control module comprises a dynamic addressing circuit connected with the transmitting modules and the receiving modules. When the infrared touch device is in work, each module does not need a jumper or circuit distinguishing, addresses are dynamically distributed; in addition, the real size of the white board is not restricted and the numbers of the transmitting modules and the receiving modules can be randomly expanded as required.

Description

technical field [0001] The present invention relates to a touch input device, more specifically, to a large-scale matrix scanning infrared touch input device. Background technique [0002] Since the infrared touch input device must ensure that only one infrared emitting tube and one infrared receiving tube are in the working state when the infrared touch input device is working in matrix scanning, it is necessary to select a site. The circuit scheme of traditional infrared touch input devices adopts a static addressing method, that is, each infrared sending and receiving unit (including a transmitting module and a receiving module) uses a unique fixed address, and they cannot be overlapped or interchanged with each other. At the same time, the transmission power is decentralized and controlled. The transmission power of each transmission module is determined by the resistance value of the adjustable resistor. If the transmission power needs to be changed, the resistance of a...

Claims

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Application Information

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IPC IPC(8): G06F3/042
Inventor 郭亚临左春生谢晓东
Owner ANHUI HONGCHENG OPTO-ELECTRONICS CO LTD
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