×

RF wireless device including an infrared beacon for presence detection

  • US 8,254,838 B2
  • Filed: 05/15/2009
  • Issued: 08/28/2012
  • Est. Priority Date: 05/15/2009
  • Status: Active Grant
First Claim
Patent Images

1. A wireless communication system comprising:

  • (a) a portable wireless device (41) that further comprises(i) a radio frequency digital transceiver (415),(ii) an infrared beacon transmitter (413) adapted to transmit a low baud rate infrared beacon signal (400) at a data rate greater than 400 baud and less than 9600 baud, and(iii) a control switch (414);

    (b) a wireless communication access point (48) configured to determine whether it is collocated in a room with the portable wireless device, the wireless communication access point comprising(i) a radio frequency digital transceiver (485) adapted to communicate with said radio frequency digital transceiver of said portable wireless device, and(ii) an infrared sensor (483) adapted to receive said low baud rate infrared beacon signal; and

    (c) wherein the wireless communication access point is configured to manage radio frequency digital communications based on said low baud rate infrared beacon signal.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×