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Route guidance system

  • US 6,253,149 B1
  • Filed: 06/09/1999
  • Issued: 06/26/2001
  • Est. Priority Date: 10/04/1996
  • Status: Expired due to Term
First Claim
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1. A navigation system, based on electronic maps, for a motor vehicle, comprising:

  • a device for position determination;

    an input device for receiving destination information;

    a time detection device; and

    a memory for storing a predefined number of data records, each of the data records include position data ascertained by the device for position determination and corresponding time data from the time detection device, the memory storing a particular data record only if the position data of the particular data record differs from at least one of the position data of two most recently stored data records.

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