Material identification system and material identification method
An identification method and fingerprint identification technology, applied in the field of material identification, can solve the problem of inability to effectively identify the user's fingerprints, non-human skin materials, etc.
Active Publication Date: 2020-06-30
HIMAX TECH LTD
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Problems solved by technology
[0002] In recent years, fingerprint recognition has been widely used in electronic devices such as tablet computers and smart phones, etc. Traditional fingerprint recognition cannot effectively identify the user's fingerprint or a non-human skin material with the user's fingerprint pattern, so the intentional criminal may Easily break through the fingerprint recognition mechanism and enter the electronic device system
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[0028] Certain terms are used in the description and claims to refer to particular elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" here includes any direct and indirect electrical connection means, therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device can be directly electrically connected to the The second device, or indirectly electrically connected to the second device through other devices or connection means.
[0029] figure 1 is a schematic diagram of the impedan...
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The disclosure provides a material identification system and a material identification method. The material identification system includes an identification panel, a voltage source and a determination circuit, the voltage source is used to transmit a voltage signal to an object to be measured through the identification panel to obtain an impedance of the object to be measured, wherein the voltage source Adjust a frequency of the voltage signal within a preset range to find a specific frequency when the impedance of the object under test is the lowest; the judging circuit is used to judge whether the specific frequency of the object under test conforms to a plurality of known A specific frequency of any one of the materials to identify the material forming the object under test. The material identification system of the present disclosure can identify the material of an object to be tested.
Description
technical field [0001] The invention relates to the field of material identification, in particular to a material identification system and a material identification method. Background technique [0002] In recent years, fingerprint recognition has been widely used in electronic devices such as tablet computers and smart phones, etc. Traditional fingerprint recognition cannot effectively identify the user's fingerprint or a non-human skin material with the user's fingerprint pattern, so intentional criminals may Easily break through the fingerprint identification mechanism and enter the electronic device system. Contents of the invention [0003] One object of the present invention is to provide a material identification system and related identification method to solve the above problems. [0004] According to an embodiment of the present invention, a material identification system is disclosed, wherein the system includes an identification panel, a voltage source and a ...
Claims
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IPC IPC(8): G01N27/02G06K9/00
CPCG01N27/02G06V40/1306
Inventor 李瑞倪张耀光
Owner HIMAX TECH LTD