1039results about How to "Expand the scope of monitoring" patented technology

An object identification system includes a monitor and a plurality of transceivers that communicate over a common medium. The monitor includes a first transmitter, a first receiver, and a processor. Each transceiver includes a resonant circuit, a transmitter, a receiver, and an antenna coupled to the resonant circuit. The processor performs a method for performing transceiver communication that includes the steps of: (a) transmitting from the first transmitter a first frequency for a first duration; (b) after lapse of the first duration, receiving via the first receiver a response signal from at least one of the resonant circuits; (c) determining a second frequency from the received response signal; and (d) performing transceiver communication using the second frequency. Transceivers of the type having a resonant circuit coupled to an antenna, when operating in close proximity to each other, may interfere with the response from a single transceiver by absorbing the energy intended to be received by the transceiver, absorbing the energy transmitted by the transceiver, or altering the resonant frequency of the resonant circuit. By determining the second frequency for transceiver communication, the monitor may establish communication with the single transceiver at a frequency better suited for transferring operative power to the transceiver, conducting an interrogation protocol for identifying the transceiver, or for data transfer.

The invention discloses a traffic illegal line-cross evidence obtaining method and device. The traffic illegal line-cross evidence obtaining method comprises the following steps of: recording monitor video of vehicles in a camera monitoring range; when a vehicle crosses a line illegally, marking a line-cross time in the monitor video; taking a plurality of photos at the time when the vehicle crosses the line, and appointing the photos as a line-crossing and line-passing evidence; and intercepting videos before and after the line-cross time in the monitor video according to the mark, and appointing the videos as the traffic illegal line-cross evidences. According to the method disclosed by the invention, a vehicle illegal line-cross process can be positioned at an instant of illegal line-cross according to the high-definition photos; and the overall vehicle illegal line-cross process can be reflected clearly through dynamic videos, so that more intuitive observation is achieved.