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A two-stage gating device and gating method for infrared screen receiving elements

A receiving element and infrared technology, which is applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve the problems of complex scanning methods and long time-consuming single-stage gating circuits, and achieve the effect of convenient promotion and application

Active Publication Date: 2017-06-16
BEIJING IRTOUCH SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the time-consuming technical problem of using a single-stage gating circuit when the scanning method is complex, thereby providing a two-stage gating device and a gating method for infrared screen receiving elements that take a short time

Method used

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  • A two-stage gating device and gating method for infrared screen receiving elements

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Embodiment Construction

[0028] Schematic diagram of the structure of a two-stage gating device for infrared screen receiving elements according to the present invention figure 1 As shown, it includes: a processor 1 , a pre-gating control circuit 2 and a latching gating control circuit 3 .

[0029] The processor 1 includes a first output terminal for outputting gating information of a group of receiving elements and a second output terminal for outputting a latch signal;

[0030]The pre-gating control circuit 2 includes an input end and an output end, and the input end of the pre-gating control circuit 2 is electrically connected to the first output end of the processor 1 for receiving the first output end of the processor 1 The output receiving element gating information, and processing the gating information, converting it into a gating signal corresponding to the receiving element, and passing the gating signal through the output end of the pre-gating control circuit 2 Output; the gating informati...

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Abstract

The invention relates to a two-stage gating device for an infrared screen receiving element, which includes a processor, a pre-gating control circuit and a latch gating control circuit, and the processor outputs a latch signal to the latch gating control circuit at the same time The pre-strobe control circuit outputs the gating information of the next group of receiving elements; at the same time, it provides a gating method for the two-stage gating device of the infrared screen receiving element; during the working process of this group of receiving elements, the processor will The group receiving element gating information is sent to the pre-selecting control circuit, and the pre-selecting control circuit converts it into the corresponding next group of receiving element gating signal, and the latch signal output by the processor locks the next group of receiving element gating signal Stored in the latch gating control circuit, when this group of receiving elements finishes working, the latch gating control circuit releases the next group of receiving element gating signals to the receiving element matrix, and the next group of receiving elements starts to work. This gating method can greatly reduce the gating time.

Description

technical field [0001] The invention relates to a gating circuit, in particular to a two-stage gating device and a gating method for infrared screen receiving elements, belonging to the technical field of infrared screen touch control. Background technique [0002] Usually, the infrared touch screen is a circuit board frame installed in front of the display, and infrared emitting elements and infrared receiving elements are arranged on the four sides of the circuit board frame. Generally, two groups of infrared emitting elements and infrared receiving elements are set separately. On the two opposite sides of the frame, thus forming a crossed infrared matrix. Generally, the infrared touch screen can select the infrared emitting element and the corresponding one or more infrared receiving elements one by one, so that the light beam emitted by one infrared emitting element is received by the corresponding one or more infrared receiving elements, and according to the infrared re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/042
Inventor 刘洋刘新斌
Owner BEIJING IRTOUCH SYST CO LTD
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