Electronic clock
AssigneeClark Equipment Company
InventorsKenneth A. Brandt, Scott R. Rossow, Trevor Fuss, Ryon Boen
Life of this patent
Estimating the term…
Abstract
A clock stores time data indicative of time of operation of a power machine. A timing circuit provides a timing signal and a controller is coupled to a timing circuit and to a memory, which includes a plurality of memory locations. An elapsed time value is maintained, based on the timing signal, by the timing circuit, and a subset of a plurality of memory locations is intermittently updated with the elapsed time value.
Claims21
A method of maintaining clock data indicative of time of operation of a power machine, comprising:
- providing a plurality of clock locations in non-volatile memory;
- receiving a clock signal indicative of elapsed time;
- and
- intermittently writing clock data, indicative of elapsed time, to a first subset, and subsequently to a second subset, of the plurality of clock locations such that, clock data in the first subset of clock locations is different from clock data in the second subset of clock locations.
A clock storing time data indicative of time of operation of a power machine, the clock comprising:
- a timing circuit providing a timing signal;
- a memory having a plurality of time locations;
- and
- a controller coupled to the timing circuit and the memory, the controller maintains an elapsed time value, based on the timing signal, and selects a first time location of the plurality of time locations and updates the selected first time location with the elapsed time value and, after a first update time period, updates a subsequently selected second time location with a first updated elapsed time value.
Dependencies are inferred from the claim text.