US 7,321,837 B2
Synchronization and calibration of clocks for a medical device and calibrated clock
Ivan Osorio, Leawood, Kans. (US); Naresh C. Bhavaraju, Mission, Kans. (US); Thomas E. Peters, Lawrence, Kans. (US); Mark G. Frei, Lawrence, Kans. (US); and Jonathan C. Werder, Corcoran, Minn. (US)
Assigned to Medtronic, Inc., Minneapolis, Minn. (US)
Filed on Feb. 15, 2006, as Appl. No. 11/355,784.
Application 11/355784 is a division of application No. 10/687566, filed on Oct. 15, 2003, granted, now 7,079,977.
Claims priority of provisional application 60/418446, filed on Oct. 15, 2002.
Claims priority of provisional application 60/503795, filed on Sep. 19, 2003.
Prior Publication US 2006/0161384 A1, Jul. 20, 2006
Int. Cl. G01R 35/00 (2006.01); G04F 10/00 (2006.01); G04G 15/00 (2006.01)
U.S. Cl. 702—89  [600/509; 607/32; 702/176; 702/177; 702/178] 5 Claims
OG exemplary drawing
 
1. A method for calibrating a plurality of clocks wherein at least one of the clocks is associated with a medical device system, the plurality of clocks comprising a first clock and a second clock, the method comprising:
(a) reading a first current time from the second clock;
(b) obtaining a reference time;
(c) subtracting the current time from a reference time in order to determine a first drift time;
(d) storing the first drift time into a memory;
(e) notifying a user to calibrate the first and second clocks;
(f) receiving a selected time, the selected time being different than the reference time;
(g) receiving an indication that the selected time approximately equals the reference time;
(h) obtaining a second current time from the second clock;
(i) subtracting the second current time from the selected time in order to determine a second drift time; and
(j) storing the second drift time into a memory.