Detection of a simultaneous occurrence of an event at a...

Details Detection of a simultaneous occurrence of an event at a... Detection of a simultaneous occurrence of an event at a...

2004-09-09

2009-10-13

Jain, Raj (Department: 2416)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S338000, C370S313000, C370S330000, C370S335000, C370S342000, C370S343000, C370S344000, C370S445000, C713S502000, C713S178000, C713S400000, C713S600000, C714S735000, C714S736000, C714S737000

Reexamination Certificate

active

07602744

ABSTRACT:
The invention relates to a detection of a simultaneous occurrence of an event of a predetermined kind at a plurality of electronic devices. At least two devices detect the event and record at their end the time elapsing after this detection. Then, a communication channel is established between the devices. Once the communication channel has been established, an indication of the recorded elapsed times can be exchanged. At least one of the devices compares a recorded elapsed time with an indicated elapsed time received from another device. If both elapsed times are similar to each other, it can be assumed that the event occurred simultaneously at both devices. The invention relates equally to corresponding devices, to a corresponding data transfer system and to corresponding software program products.

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patent: 1398982 (2004-03-01), None
patent: WO 01/50657 (2001-07-01), None
U.S. Appl. No. 10/390,548, filed Mar. 14, 2003, T. Erola et al.
U.S. Appl. No. 10/773,765, filed Feb. 5, 2004, S. Pohja et al.

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