look that also:
48 Ultra-accurate DSP-based
DCF77 Timecode Receiver
To extract the highest possible accuracy from the German DCF 77.5
kHz time
-
code broadcast this project uses DSP algorithms running on a low-cost
dsPIC33
microcontroller to filter and demodulate both the AM and phase modulated
signals, while also producing a very stable 10
Hz carrier-locked reference clock
output.
http://uploadkon.ir/uploads/4b5782ba531bb58ff30ceeaa383a9212.pdf
On 8/8/2014 5:20 PM, Paul Davis wrote:
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was granted in 1986, so no longer in effect anyway.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 <bro...@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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