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Automatic debiting parking meter system

  • US 5,351,187 A
  • Filed: 12/30/1992
  • Issued: 09/27/1994
  • Est. Priority Date: 12/30/1992
  • Status: Expired due to Term
First Claim
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1. Apparatus for automatically debiting vehicular parking fees in a specified area comprising,a stationary transmitter broadcasting a signal over said specified area including zones for pay parking, wherein said broadcast signal includes information indicating a monetary fee per unit time for parking in said zones, anda portable transponder to be carried by a vehicle, said transponder including,a) a receiver for receiving said broadcast signal,b) a read/write memory for storing information indicative of a monetary amount,c) means for providing information external to said transponder of said monetary amount in said memory at a given time, andd) a data processor coupled to both said read/write memory and said receiver, said data processor responding to said broadcast signal being sensed by said receiver by decreasing said monetary amount in said memory by said monetary fee per unit time for the time duration of parking, said memory providing a specific output signal indicative of the status of said monetary amount in said memory, or said parking status being invalid, said data processor providing for entering into said memory a signal indicative of a specified monetary value in response to an externally applied signal.

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