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Key detection circuit and detection method

A detection circuit and detection resistance technology, applied in dynamic coding and other directions, can solve problems such as increased workload and waste of personnel, and achieve the effect of solving the interference of voltage detection and accurate detection results

Pending Publication Date: 2020-09-29
BOE TECH GRP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

According to the characteristics of different display devices, it is necessary to switch between the two detection methods, and the use of different detection boards to switch back and forth for detection results in increased workload and waste of personnel.

Method used

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Embodiment Construction

[0028] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

[0029] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other el...

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Abstract

The invention discloses a key detection circuit and a detection method. The key detection circuit comprises a voltage detection module, an I / O interface detection module, a selection module and a first isolation module, and the voltage detection module is used for detecting voltage signals caused by different keys; the I / O interface detection module is used for detecting high-low level sequence signals caused by different keys; the selection module is used for switching connection with the I / O interface detection module or the voltage detection module; the first isolation module is used for isolating the selection module and the I / O interface detection module. According to the technical scheme provided by the embodiment of the invention, by providing the key detection circuit which can beselected in the I / O interface detection module and the voltage detection module, the problem of heavy workload caused by voltage detection and I / O interface detection by using two detection boards inthe existing key detection can be solved.

Description

technical field [0001] The present disclosure generally relates to the field of detection of embedded systems, and particularly relates to a key detection circuit and a detection method. Background technique [0002] In the field of display, the display device includes various buttons, such as a power button, a frequency modulation button, a sound button, and the like. These keys are detected through I / O interface detection or voltage detection. According to the characteristics of different display devices, it is necessary to switch between the two detection modes, and switching back and forth with different detection boards for detection results in increased workload and waste of personnel. Contents of the invention [0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a key detection circuit capable of supporting switching between different detection modes. [0004] In the first aspect, a button detection circuit is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M11/20
CPCH03M11/20
Inventor 王志懋管恩慧李咸珍李亮刘根禹
Owner BOE TECH GRP CO LTD
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