System and process for providing remote interactive access to a real estate information database using a portable computing device

  • US 6,484,176 B1
  • Filed: 06/25/1999
  • Issued: 11/19/2002
  • Est. Priority Date: 06/25/1999
  • Status: Expired due to Term
First Claim
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1. A system for providing remote interactive access to a real estate information database using a portable computing device, comprising:

  • a portable computing device maintaining both program code and data exclusively in a general purpose random access memory configured for both transient and persistent storage of program code and data;

    a database server comprising a search engine configured to retrieve listing records from a real estate information database, each listing record comprising a set of characteristics describing an individual real estate property listing;

    a remote client defining methods in the general purpose random access memory for accessing the real estate information database through the search engine, comprising;

    a session manager facilitating a dynamic session between the portable computing device and the database server over a communications link, the session manager identifying the remote client to the database server and managing an interactive search session between the remote client and the search engine;

    a search specification method interactively sending to the search engine search parameters and receiving from the search engine the listing records having real estate property listing characteristics matching the search parameters; and

    a search results display method displaying the received listing records on the portable computing device;

    a daemon method periodically connecting the remote client and the database server during an alert session, the search engine retrieving new listing records in the time occurring between the alert session and at least one of the interactive session and a previous alert session, and the search specification method receiving the new listing records during the alert session.

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