System and methods for smoothing sensed toner levels

Details System and methods for smoothing sensed toner levels System and methods for smoothing sensed toner levels

2006-09-05

2006-09-05

Poon, King Y. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Data corruption, power interruption, or print prevention

C358S001130, C358S001150

Reexamination Certificate

active

07102770

ABSTRACT:
The system and methods described herein relate to reporting the supply level of a marking agent (e.g., toner) in a print device cartridge. An algorithm executes to smooth over inaccuracies in measured values received from a hardware supply level sensor. Through seeding an initial report level and adjusting that level based on average groups of sensor readings that exclude outlying values, the algorithm facilitates supply level reports that follow a naturally decreasing trend throughout the life of a print device cartridge.

REFERENCES:
patent: 5802420 (1998-09-01), Garr et al.
patent: 6619206 (2003-09-01), Koehler
Scott Barber, User Experience, not Metrics: What is an Outlier and How do I Account for One?, www.perftestplus.com.

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