Patent · US Active

RF wireless device including an infrared beacon for presence detection

US8254838B2 · kind B2 · utility

39Cited by
3References
35Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMay 15, 2009
Grant dateAug 28, 2012
Priority date—
Expiry dateNov 18, 2030

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04W4/80
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

A portable RF wireless device (41), such as a microphone, is provided with an infrared beacon in order to signal a connection request to a wireless communication access point (48) using a first IR code (401). In response to this first IR code, the wireless communication access point broadcasts an RF inquiry message (101) that is responded (102) to by the portable RF wireless device in order to establish an RF communication link. After the RF communication link is established, the portable RF wireless device conditionally transmits a second IR code to verify that it is still collocated in the local vicinity of the wireless communication access point, such as being in the same room.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.