A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
A61C 7/00 (2006.01) G07C 3/04 (2006.01)
Patent
CA 2063376
ABSTRACT Wearing time measuring device for a removable medical apparatus A medical apparatus to be worn in the mouth comprises a battery-fed measuring unit (15) including a clock gen- erator (18) and a counter (20) for counting the pulses of the clock generator. Accuracy of the time measure- ment decisively depends on the precision of the oscil- lating frequency of the clock generator. In the inven- tion, there is used a clock generator (18) wherein frequency precision is low. When the counted value of the counter (20) is read into an external evaluating unit, the measuring unit supplies a reference time re- quired by the clock generator (18) for generating a number of pulses. The evaluating unit calculates the time corresponding to the counted value under consid- eration of the length of the reference time. Thus, the evaluating unit measures the cycle length of the pulses of the clock generator, and this cycle length is multi- plied by the number of the counted clock pulses. In this manner, time measurement is performed in a precise manner without requiring a highly precise clock gener- ator. (Fig. 2)
Knorzer Gerhard
Kummel Dietmar
Wurst Jurgen
Frohn Hermann-Josef
Gowling Lafleur Henderson Llp
Knorzer Gerhard
Kummel Dietmar
Wurst Jurgen
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