Patent ID: 7391790

Claim:
A CardBus PC Card type wireless transmitting/receiving device that performs a wireless data transmission/reception operation between a plurality of notebook PCs (Personal Computers) and an MB-OFDM (Multiband Orthogonal Frequency Division Multiplexing) UWB (Ultra Wide Band) type piconet coordinator, the device comprising: a wireless 1394 device, built in the notebook PC in the form of a CardBus PC Card, for converting a CardBus PC Card access signal of the notebook PC into an MB-OFDM UWB signal to transmit the converted MB-OFDM UWB signal, and inversely converting a received MB-OFDM UWB signal into a CardBus PC Card access signal of the notebook PC, the wireless 1394 device comprising: a CardBus PC Card connection unit connected to the notebook PC through a CardBus PC Card interface a DMA control unit; a buffer connection unit configured to receive and convert an output from the DMA control unit into a transmission FIFO (First-In First-Out) signal; a transmission FIFO unit configured to receive the transmission FIFO signal from the buffer connection unit and output 1394 sub-action transmission data; a reception FIFO unit configured to receive and temporarily store 1394 sub-action reception data into a reception FIFO signal, and transfer the reception FIFO signal to the buffer connection unit; a PAL unit configured to receive the 1394 sub-action transmission data from the transmission FIFO unit; a MAC unit configured to receive the PAL data from the PAL unit; an MB-OFDM UWB transmission/reception unit configured to receive the MAC data from the MAC unit; and a wireless 1394 device control unit for controlling and managing the CardBus PC Card connection unit using a CardBus PC Card connection unit control signal.