Radio frequency computer lock, computer locking and unlocking method
A computer lock and computer technology, applied in the field of radio frequency computer locks, can solve the problems of occupying large computer memory resources, reducing security, and slow transmission rate, so as to reduce the time for locking and unlocking, reduce the time for confirming user identity, and reduce unlocking. The effect of time used
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[0019] Refer to Figure 2, which is a structural block diagram of an embodiment of a radio frequency computer lock of the present invention, which is connected to a computer. The radio frequency computer lock of this embodiment is composed of a radio frequency card 1 and a reader 2. The radio frequency card 1 emits a radio frequency signal, and its working frequency is between 840 MHz and 960 MHz. The electromagnetic wave emitted by the radio frequency card 1 has a certain The range does not consume too much power. The reader 2 is connected to the computer 3 through a USB interface, and can receive the radio frequency signal sent by the radio frequency card 1, and operate according to the radio frequency signal. The reader 2 includes an antenna 21, a radio frequency circuit 22, a microcontroller 23, a USB interface circuit 24, and a card number determining unit 25. The antenna 21 can receive a radio frequency signal from a radio frequency card and transmit the radio frequency signa...
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