초록 ▼

A RF data communication device operates in at least two states. In a first state, the device transmits a response to an RF transmission if specific data therein represents an inquiry as to the presence of one or more RF data communication devices and if specific data therein corresponds to a class m

A RF data communication device operates in at least two states. In a first state, the device transmits a response to an RF transmission if specific data therein represents an inquiry as to the presence of one or more RF data communication devices and if specific data therein corresponds to a class maintained by the device. The device does not transmit a response if specific data in the RF transmission is not representative of an inquiry as to the presence of one or more RF data communication devices, or if specific data therein does not correspond to at least one maintained class. In a second state, the device does not transmit a response when specific data is included therein that is representative of an inquiry as to the presence of one or more RF data communication devices and specific data therein corresponds to at least one maintained class.

대표청구항 ▼

What is claimed is: 1. A wireless two-way radio frequency (RF) data communication device comprising a data packet radio component that selectively reveals its presence in response to RF transmissions, the wireless two-way RF data communication device being configured to operate in a first state in w

What is claimed is: 1. A wireless two-way radio frequency (RF) data communication device comprising a data packet radio component that selectively reveals its presence in response to RF transmissions, the wireless two-way RF data communication device being configured to operate in a first state in which the wireless two-way RF data communication device:(i) receives RF transmissions;(ii) maintains at least one common designation for purposes of filtering RF transmissions received by the wireless two-way RF data communication device;(iii) identifies specific data in a received RF transmission; and(iv) in response to the received RF transmission in which the specific data is identified,(A) transmits a response,(I) if the identified specific data includes data representative of an inquiry as to the presence of one or more wireless two-way RF data communication devices, and(II) if the identified specific data includes data that corresponds to at least one maintained common designation, and(B) retransmits at least a portion of the received RF transmission as an inquiry as to the presence of one or more wireless two-way RF data communication devices,(I) if the identified specific data includes data representative of an inquiry as to the presence of one or more wireless two-way RF data communication devices, and(II) if the identified specific data corresponds to at least one maintained common designation