Abstract: A radio frequency apparatus and a radio frequency identification (RFID) tag detection method are provided. The radio frequency apparatus includes a reader and an RFID tag. The reader includes a first coil and a plurality of second coils. The first coil supports a first frequency band. Each second coil supports a second frequency band. The second frequency band is different from the first frequency band, and the second coils are spaced away from each other and do not overlap each other. The RFID tag includes a first and a second radio frequency circuits which supports the first frequency band and the second frequency band respectively. The first radio frequency circuit can communicate with the first coil by using the first frequency band. The second radio frequency circuit can communicate with at least one of the second coils by using the second frequency band.

Abstract: A method and a system for playing sound data are provided. The method for playing sound data includes defining a piece of time information, where the time information corresponds to a play time point of a piece of sound data; sending the time information by using a first radio frequency circuit; receiving the time information by using a second radio frequency circuit, and transmitting the time information to a play circuit coupled to the second radio frequency circuit; and playing, by the play circuit, the sound data at the play time point corresponding to the time information.

Abstract: A transmission cable structure includes a cable, a first connector, a second connector, a control circuit and a light-emitting circuit. The cable includes at least one conducting wire installed therein. The first connector includes a body portion and a connecting portion. The body portion connects with an end of the cable, while the second connector connects with another end of the cable. The control circuit is configured within the body portion. The control circuit electrically connects with the conducting wire, and generates a light-emitting signal according to an equivalent capacitance value of the conducting wire. The light-emitting circuit is configured within the body portion. The light-emitting circuit couples with the control circuit and emits light according to the light-emitting signal.

Abstract: In a method of driving an electronic element through file processing, an electronic element signal processing interface is connected to an electronic operating platform and the electronic element, so that various signals of the electronic element could be directly processed using a file process unit of an existing operating system on the electronic operating platform without the need of using a particular driver or application to drive the electronic element. Therefore, the signal file for driving the electronic element could be quickly transmitted and processed over a network to largely reduce the inconveniences of an engineer in re-writing a driver.