Remote response system and data transfer protocol

  • US 5,724,357 A
  • Filed: 06/24/1994
  • Issued: 03/03/1998
  • Est. Priority Date: 01/28/1992
  • Status: Expired due to Term
First Claim
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1. A wireless method of retrieving at a base unit responses from a plurality of users, said responses being entered in a plurality of remote response units, each user being provided with a response unit, including:

  • transmitting a base data packet over a wireless communication link to said plurality of remote response units;

    decoding said base data packet at each response unit and loading into memory at least a portion of the decoded base data packet at each response unit, wherein said portion of the decoded base packet includes a plurality of characters, at least a portion of said plurality of characters pertaining to different response units;

    determining at each response unit any character of said portion of the decoded base data packet that pertains to that particular response unit; and

    processing by each remote response unit any character that pertains to that particular remote response unit, including transmitting in a response data packet over a wireless communication link from that particular remote response unit to the base unit any response entered by a user.

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