US 12,353,500 B1
Dynamic decay compensation for first order high pass filters
Alexander Eugene Choi, Seattle, WA (US); Jacob Drewniak, Seattle, WA (US); Paul Eugene Munger, Seattle, WA (US); Alan Akiyoshi Nonaka, Seattle, WA (US); Ali Rahimi, Berkeley, CA (US); and Matthew Zimmer, Bainbridge Island, WA (US)
Assigned to Amazon Technologies, Inc., Seattle, WA (US)
Filed by Amazon Technologies, Inc., Seattle, WA (US)
Filed on Mar. 29, 2022, as Appl. No. 17/707,759.
Int. Cl. G06F 17/10 (2006.01); G01G 19/414 (2006.01); G01G 19/52 (2006.01); G01G 23/00 (2006.01); G06F 18/10 (2023.01)
CPC G06F 17/10 (2013.01) [G01G 19/414 (2013.01); G01G 19/52 (2013.01); G01G 23/00 (2013.01); G06F 18/10 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A method comprising:
receiving signal data from a first order high pass filter;
applying an inverted transfer function to the signal data to remove decay from the signal data;
determining a dynamic neutral point for the signal data by introducing an exponential decay to a neutral point estimation;
determining a non-quiescent portion of the signal data;
generating weight signal data by removing the dynamic neutral point for the signal data during the non-quiescent portion of the signal data;
determining a step function associated with the signal data based on the weight signal data and the inverted transfer function;
determining a change in an applied force based at least in part on the step function; and
adjusting a time axis of the signal data by passing the signal data through a charge amplifier.