US 2,002,036,569 · Filed 2001-08-06
Tag and receiver systems
A pet tag ( 10 ) for locating lost pets, the tag comprising a housing containing an internal power supply and a micropower rf transmitter ( 26 ) to transmit a spread spectrum signal such as a Gold or Kasami coded signal; and an optional acoustic command receiver ( 20 ) to receive an acoustic command; and wherein the coded signal is transmitted in response to reception of an acoustic command. A corresponding detector ( 1200 ) for locating a tagged pet comprises: a direct sequence spread spectrum (DSSS) receiver ( 1300 ) for receiving from the tag a spread spectrum signal based on a Gold or Kasami code; a first aerial ( 1206 ) coupled to the receiver; input means ( 1210 ) for user selection of a said Gold or Kasami code; and indicating means ( 1228 ) for indicating when a tag with the selected code is detected.
Patent details
- Publication number
- US 2,002,036,569
- Filing date
- 2001-08-06
- Grant date
- Application — not yet granted
- Assignee
- Martin Philip John
- Inventor(s)
- MARTIN PHILIP JOHN
- CPC class
- A01K11/008
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