초록 ▼

A system for locating an individual in a facility, the system including a portable wireless transponder device borne by the individual; an interrogator; and a plurality of antennas distributed in the facility, the antennas being selectively separately connected to the interrogator, the interrogator

A system for locating an individual in a facility, the system including a portable wireless transponder device borne by the individual; an interrogator; and a plurality of antennas distributed in the facility, the antennas being selectively separately connected to the interrogator, the interrogator when connected to any of the antennas having a communications range covering less than the area of the entire facility, the interrogator being configured to repeatedly transmit a wireless command to the portable wireless transponder device using alternating antennas, the portable wireless transponder device being configured to transmit data identifying the portable wireless transponder device in response to a command if the portable wireless transponder device is within communications range of the antenna sending the command, the individual being locatable by determining with which antenna the interrogator was able to establish communications with the portable wireless transponder device.

대표청구항 ▼

[ What is claimed is:] [1.] A travel reservation system comprising:a computer including a database configured to store information identifying passengers who have purchased tickets for a voyage, information about the scheduled departure for the voyage, and information identifying passengers who have

[ What is claimed is:] [1.] A travel reservation system comprising:a computer including a database configured to store information identifying passengers who have purchased tickets for a voyage, information about the scheduled departure for the voyage, and information identifying passengers who have checked in for the voyage; anda wireless transponder in communication with the computer, and an antenna coupled to the wireless transponder, the transponder being configured to periodically send wireless commands requesting wireless responses from portable identification devices, the portable identification devices being configured to transmit identifying data in response to receiving a command, the wireless transponder having a predetermined communications range and being configured to communicate with portable identification devices within the predetermined communications range, the computer being configured to modify the database to indicate that one of the passengers who purchased a ticket has checked in in response to the wireless transponder receiving a response from the portable identification device associated with that passenger within a predetermined time period, which response includes identifying data for that passenger.