Communications: electrical – Systems – Timer control
Reexamination Certificate
2006-10-24
2006-10-24
Wu, Daniel (Department: 2612)
Communications: electrical
Systems
Timer control
C340S328000, C340S384100, C340S384710, C340S005310, C368S089000
Reexamination Certificate
active
07126455
ABSTRACT:
Protection against abusive ringing of doorbells is provided by a ring limiting circuit including ring counter and ring timer circuits. Protection can also be implemented in software executed by a digital processor such as a smart home central controller in a wireless doorbell installation.
REFERENCES:
patent: 6965301 (2005-11-01), Epstein et al.
patent: 2003/0025605 (2003-02-01), Prins
Epstein Ari
Epstein Natan
Hunnings Travis
Wu Daniel
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