Doorbell device and method for discriminating visitors
A doorbell and visitor technology, applied in electromagnetic audible signals, character and pattern recognition, instruments, etc., can solve problems such as inconvenience
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[0022] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the following preferred embodiments are described in detail in conjunction with the accompanying drawings.
[0023] Many embodiments or examples will be presented below to achieve different functions of the present invention in various implementation situations. In order to simplify the present invention, specific examples of modules or connection relationships will be described below. These examples are for illustration only, not limitation of the present invention. In addition, the present invention will repeatedly refer to numbers and letters in various examples; this is for illustration and simplification of examples, and these numbers and letters are not used to indicate the relationship between various embodiments or their configurations. In addition, the explanatory statements in the disclosure are also for the purpose of examples, rather than limi...
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