Electronic watch with touch-sensitive keys
First Claim
1. An electronic watch comprising:
- A. oscillator means providing a standard oscillating signal and a feed signal;
B. frequency divider means coupled to said oscillating signal for dividing said oscillating signal into a time signal having a lower frequency than said oscillating signal;
C. time display means connected to said time signal for displaying time information in response thereto;
D. at least one touch-sensitive key switch means for providing an activation signal in response to a human touch when coupled to said feed signal, said switch means being both stationary and contactless;
E. time correction means coupled to said frequency divider means for changing the time displayed by the watch in response to the activation signal;
F. means for producing a control signal; and
G. gating means coupling said feed signal to said key switch means in response to the control signal
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Accused Products
Abstract
Touch sensitive key switches of an electronic watch which control functions of the watch such as time setting, are gated to reduce the power consumption of the watch. The key switches are capacitive and are fed signals derived from the time standard oscillator of the watch. A change in the key switch signals when the switches are touched by the user activate the time setting functions. Gates are provided coupling the signals derived from the oscillator to the key switches so that the signals are applied to the key switches either under control of the user or during repetitive time periods, reducing the time the signals are applied to the key switches and the power necessary to continuously supply such signals to the key switches.
105 Citations
6 Claims
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1. An electronic watch comprising:
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A. oscillator means providing a standard oscillating signal and a feed signal; B. frequency divider means coupled to said oscillating signal for dividing said oscillating signal into a time signal having a lower frequency than said oscillating signal; C. time display means connected to said time signal for displaying time information in response thereto; D. at least one touch-sensitive key switch means for providing an activation signal in response to a human touch when coupled to said feed signal, said switch means being both stationary and contactless; E. time correction means coupled to said frequency divider means for changing the time displayed by the watch in response to the activation signal; F. means for producing a control signal; and G. gating means coupling said feed signal to said key switch means in response to the control signal - View Dependent Claims (2, 3, 4, 5, 6)
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Specification