Patent ID: 7786845
Filing Date: 2010-08-31
Classification: G06K,H01Q,H03L

Abstract:
1. A method, comprising: controlling subsystem configured to provide a wireless interrogation signal using an application program on a host computer to receive data from the subsystem; transmitting, from the subsystem, a forward link signal to determine an identification code of a wireless device from among a plurality of wireless devices contained within an RF field of the subsystem, the forward link signal comprising: processing, via the wireless device coupled to an object and storing the identification code to identify the object via the host computer, at least a portion of the forward link signal to compare the parameter to a value stored in the wireless device to determine if the wireless device is a member of the group; and transmitting, from the wireless device, a return link signal modulated in accordance with a modulation scheme selected by the return link configuration information, wherein each bit of the return link signal is multiplied by a selectable one of at least three subcarrier sequences indicated by the return link configuration information.