[time-nuts] WWVB BPSK patent status

Alexander Pummer alexpcs at ieee.org
Fri Aug 8 22:03:40 EDT 2014


also there is one FPGA based system already available unfortunately the 
description is in German : 
http://www.cadt.de/dieter/dcf/Praezisionsfrequenzmessungen.pdf

  On 8/8/2014 5:33 PM, Alex Pummer wrote:
> there was a Swiss ingenieur who designed and published a receiver 
> design for the DCF77 which has the same modulation format, also there 
> was a Finish design a few years ego also published, therefore, that 
> American company, which is promising the chip for a while but instead 
> delivering the chip changes it's name... has to be very careful with 
> patent writing.
> 73
> Alex
>
> On 8/8/2014 4:44 PM, Richard (Rick) Karlquist wrote:
>> Without having seen the specific patent, what
>> worries me is that there is a trend these days
>> to write blanket patents that say you can't
>> build any black box that, for example, receives
>> this format, no matter how it works.
>> They don't have to prove what is
>> in your FPGA code.  They then can shut down any
>> competition with such a weak patent unless the
>> competition has deep pockets for a lawyer.  If
>> they can prove you willfully infringed (whatever
>> that means), they get triple damages.  If you
>> do any kind of patent search, do not keep any
>> records or tell anyone about it.
>>
>> Possibly you could make the FPGA code available
>> on the internet and have the end user be the
>> infringer.  Not being a lawyer, I'm not sure
>> if this would get you off the hook.  Maybe
>> they can hang their hat on the digital copyright
>> law (DCMA?) , in which case you become a criminal too.
>>
>> Rick Karlquist N6RK
>>
>> On 8/8/2014 3:24 PM, Brooke Clarke 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
>>>
>>> Mike Harpe wrote:
>>>> >From my reading of the archives and research it appears that the
>>>> design for
>>>> a BPSK WWVB receiver probably has a patent conflict.
>>>>
>>>> Isn't this a rehash of the old Heathkit patent on radio clocks that 
>>>> held
>>>> back their adoption for years?
>>>>
>>>> I have begun work on a BPSK receiver for WWVB using an FPGA.
>>>>
>>>> Someone should look into why the NIST did this at all since the 
>>>> receiver
>>>> design got a patent slapped on it right away.
>>>>
>>>> Mike Harpe, N4PLE
>>>> Sellersburg, IN
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