Electrostatic discharge protection for analog component of wrist-worn device
First Claim
1. A heart rate monitor, comprising:
- a monitor case;
an analog input mechanism which is configured to adjust an analog display element of the heart rate monitor;
a case back configured to sense a user biometric and connected to the monitor case;
monitor circuitry for detecting a heart rate of a user based on a biometric signal received from the case back; and
electrostatic discharge (ESD) protection circuitry connected between the case back and the analog input mechanism, the ESD protection circuitry configured to discharge electro-static charges from said analog input mechanism to said case back,said monitor case containing the monitor circuitry, ESD protection circuitry, and at least a portion of the analog input mechanism connected to the ESD connection circuitry.
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Accused Products
Abstract
A heart rate monitor with analog and digital input mechanisms is provided with electro static discharge (ESD) protection which protects electrical components within the monitor. The heart rate monitor input mechanisms may include externally exposed sensors comprised of a conducting material, such as metal. The sensors may include push buttons, a dial, and one or more sensors for retrieving a heart rate signal, such as a case back for the monitor device. Internal circuitry such as an integrated circuit (IC) performs operations to provide time, a heart rate, and other information through a display. The ESD protection prevents any voltage discharge accumulating on the externally exposed sensors from reaching the one or more ICs and interrupting or negatively affecting performance of the monitor.
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Citations
19 Claims
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1. A heart rate monitor, comprising:
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a monitor case; an analog input mechanism which is configured to adjust an analog display element of the heart rate monitor; a case back configured to sense a user biometric and connected to the monitor case; monitor circuitry for detecting a heart rate of a user based on a biometric signal received from the case back; and electrostatic discharge (ESD) protection circuitry connected between the case back and the analog input mechanism, the ESD protection circuitry configured to discharge electro-static charges from said analog input mechanism to said case back, said monitor case containing the monitor circuitry, ESD protection circuitry, and at least a portion of the analog input mechanism connected to the ESD connection circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for monitoring a heart rate, comprising:
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heart rate detection circuitry configured to determine heart rate information from an electrocardiogram signal; a gear assembly connectively coupled to the heart rate detection circuitry and a dial; a case back configured to sense a user biometric and connected to the monitor case; and an ESD diode connected between the case back sensor and the gear assembly, the ESD diode having an anode connected to the case back and a cathode connected to the gear assembly. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A heart rate monitor, comprising:
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a monitor case; a display having both analog and digital components; an analog input assembly for adjusting the display; a case back attached to the monitor case and configured as a sensor for a user biometric; one or more secondary sensors for receiving additional biometric data from a user; monitor circuitry for receiving a signal from the case back and one or more secondary sensors, determining heart rate information from the signal, and providing the heart rate information to the display; and ESD protection circuitry connecting the case back to the analog input mechanism, the ESD protection circuitry protecting the monitor circuitry from voltage discharge. - View Dependent Claims (17, 18, 19)
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Specification