Patent ID: 11934908
Assignee: Y SOFT CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 6:
7. A method of use of the device for detection of the signal of passive RFID chips including steps of:
a) providing a device for detection of a signal of passive RFID chips comprising an antenna for transmission of a source radio signal and receiving a radio signal of RFID chips, a peak detector for detection of peaks in the signal received by the antenna, filters and bit decoders filter and decode signals with different types of modulation from a group including amplitude, frequency and phase modulation, and a computing unit, the device further comprises at least a first and a second parallel branch, wherein each of the first and the second branches comprise a said filter connected in series with a said bit decoder, wherein the filter and the bit decoder of the first branch process the signal modulated by a first type of modulation, the filter and the bit decoder of the second branch process the signal modulated by a second type of modulation, wherein the signal processed by the peak detector is fed to an input of these branches and an output of these branches is fed to the computing unit, wherein the first type of modulation is different from the second type of modulation, wherein the computing unit comprises at least a first and a second module connected in parallel, the first module being operable to search the decoded signals for signal properties of a first protocol, the second module being operable to search the decoded signals for signal properties of a second protocol different from the first module protocol, wherein the protocols are pre-defined and based on results of the searches the computing unit detects a protocol of the received radio signal, the signal properties comprising at least an initial bit sequence and a total length of the bit sequence of a signal provided to the computing unit;
b) receiving the signal of passive RFID chip by the antenna; and
c) detecting the peaks in the signal and obtaining a modulated signal by the peak detector and processing of the signal by a reader, wherein the modulated signal is further simultaneously fed to all branches, where the modulated signal is subsequently processed, the processed signal is further fed to the computing unit and at the same time processed by all modules, wherein an output signal of the computing unit is further fed to a higher computing unit and further processed.