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Expandable object tracking system and devices

  • US 20040203859A1
  • Filed: 06/06/2002
  • Published: 10/14/2004
  • Est. Priority Date: 06/06/2002
  • Status: Active Grant
First Claim
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1. An object tracking device (OTD) for establishing a wireless link with compatible devices having RF receiver/transmitter means for transmitting and receiving unique self-identification codes (IDs), said OTD comprising:

  • RF circuit means for transmitting and receiving RF signals;

    user interface means for interfacing with a user, said interfacing comprising audio and visual signaling to the user and permitting user inputs to the OTD;

    alarm means for producing an alarm signal;

    memory means for storage of identification codes (ID) including at least one unique ID for self-identification; and

    processor means for processing received RF signals and user inputs, management of said memory and control of said alarm means, wherein said OTD establishes a wireless link with a plurality of said compatible devices by receiving the ID of each of said plurality of compatible devices and storing said ID in said memory means and transmitting its self-identification ID to each of said compatible devices for storage therein and said OTD terminates said wireless link with a particular device by erasing an ID associated with the particular device from memory and transmitting its self-identification ID to the particular device for removal therefrom, whereby said OTD is responsive to RF signals from compatible devices whose IDs are stored in said memory.

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