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 microcontroller device for extending memory address space by inserting a waiting state and an operation method on the device. The device includes a CPU, a ROM, and a memory interface controller. In the device, the memory interface controller inserts a waiting state into the CPU when address of the information or the program to be fetched by the CPU is not located within a predetermined address range until the information or the program is completely fetched.

Abstract: An apparatus for detecting and decoding music format for mobile phones and a digital music sharing method are disclosed. The apparatus for detecting and decoding music format for mobile phones comprises a receiver, for receiving a digital music file and a data processing unit, for detecting the format of the digital music file and decoding the digital music file responsive to the detected format of the digital music file. The method of sharing digital music for mobile phones comprises providing a digital music file, transmitting the digital music file to a mobile phone, wherein the mobile phone detects the format of the digital music file and decodes the digital music file.

Abstract: A device for extending address space by inserting a waiting state and an operation method on the device. The device includes a CPU, a ROM, and a memory interface controller. In the device, the memory interface controller inserts a waiting state into the CPU when address of the information or the program to be fetched by the CPU is not located within a predetermined address range until the information or the program is completely fetched.

Abstract: A system and method of synthesizing a plurality of voices are described. The system has a processing unit, a register, a latch unit, a timer and a digital/analog converter. The processing unit decodes voice data into decoded voices and the decoded voices are then transmitted to the register. A plurality of different sampling signals of the timer are transmitted to the latch unit to trigger periodically the latch unit and the latch unit sequentially fetches the decoded voices stored in the register to prevent effectively jitters when the voice data are synthesized.