Ricoh Company, Ltd.

Mayuko Ueno

Syuji Kubota

Sadahiro Kimura

A wireless communication terminal includes an antenna selecting unit that selects, for each packet, an antenna for use in receiving signals from among a plurality of a plurality of antennas; a packet-destination judging unit that judges whether a packet obtained by demodulating a signal received by the receiving antenna selected by the antenna selecting unit is destined for the wireless communication terminal; and a stand-by-antenna determining unit that determines a stand-by antenna for use in receiving a packet to be received next based on a result of selection made by the antenna selecting unit and a result of judgment made by the packet-destination judging unit.

Wireless communication terminal

A DSSS and OFDM two-way waiting reception method is disclosed. The reception method includes the steps of (a) maintaining a two-way waiting state if none of an RSSI trigger, an OFDM search trigger, and a DSSS search trigger is generated; (b) switching to an RSSI-activated OFDM reception state if the RSSI trigger is generated in the two-way waiting state; (c) switching to a DSSS reception state if an OFDM synchronization loss trigger is generated in the RSSI-activated OFDM reception state; (d) switching to an OFDM search-activated OFDM reception state if the OFDM search trigger is generated in the two-way waiting state; (e) switching to the DSSS reception state if the DSSS search trigger is generated and the OFDM synchronization loss trigger is generated in the OFDM search-activated OFDM reception state; and (f) switching to the DSSS reception state if the DSSS search trigger is generated in the two-way waiting state.

DSSS and OFDM two-way waiting reception method and wireless LAN apparatus

A wireless LAN apparatus is disclosed that includes a module group section that is connected to an upper level CPU of an upper level apparatus, an RF processing part that is connected to the module group section, a power reduction instruction dispatching section for dispatching a power reduction instruction, a power reduction instruction receiving section for receiving the power reduction instruction dispatched from the power reduction instruction section, and a power reduction sequence controlling section for controlling power of the module group section in a predetermined order in accordance with the power reduction instruction dispatched by the power reduction instruction dispatching section.

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Chiba, Japan

Mayuko Ueno