[time-nuts] WWVB BPSK patent status
Paul Davis
ziggy9+time-nuts at pumpkinbrook.com
Fri Aug 8 20:20:56 EDT 2014
How about these Xtendwave patents for a start:
8270465 - Timing and Time Information Extraction from a Phase Modulated Signal in a Radio Controlled Clock Receiver
8605778 - Adaptive radio controlled clock employing different modes of operation for different applications and scenarios
8774317 - System and Method for Phase Modulation Over a Pulse Width Modulated/Amplitude Modulated Signal for Use in a Radio Controlled Clock Receiver
Application number: 20130121399 - Timing and Time Information Extraction in a Radio Controlled Clock Receiver
And patent 8300687 of the same name but issued Oct 2012?
Or did you mean Heath Co.? The only thing relevant there is 4582434 - Time corrected, continuously updated clock but that is for WWV/WWVH not WWVB. And it was granted in 1986, so no longer in effect anyway.
Paul
On Aug 8, 2014, at 6:24 PM, Brooke Clarke <brooke at pacific.net> wrote:
Hi Mike:
Do you have any patent numbers.
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
http://www.prc68.com/I/DietNutrition.html
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