Electrostatic discharge protection for analog component of wrist-worn device
First Claim
1. A wrist-worn device, comprising:
- a monitor case;
a display connected to the monitor case at a front of the wrist-worn device;
a case back connected to the monitor case at a back of the wrist-worn device, the case back contacts a user'"'"'s wrist when the wrist-worn device is worn by the user;
a gearbox provided within the monitor case, the gearbox includes a magnetic coil, and is connected to the display;
a crown dial exposed external to the monitor case and connected to the gearbox;
monitor circuitry provided within the monitor case, at least in part, the monitor circuitry is configured to detect a heart rate of the user based on an EKG signal, where the case back is a first electrode of the monitor circuitry; and
electrostatic discharge (ESD) protection circuitry connected between the case back and the gearbox, the ESD protection circuitry is configured to;
(i) pass electro-static charges in a path between;
(a) the gearbox and the crown dial and (b) the case back, and (ii) isolate the case back from the gearbox.
1 Assignment
0 Petitions
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
22 Claims
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1. A wrist-worn device, comprising:
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a monitor case; a display connected to the monitor case at a front of the wrist-worn device; a case back connected to the monitor case at a back of the wrist-worn device, the case back contacts a user'"'"'s wrist when the wrist-worn device is worn by the user; a gearbox provided within the monitor case, the gearbox includes a magnetic coil, and is connected to the display; a crown dial exposed external to the monitor case and connected to the gearbox; monitor circuitry provided within the monitor case, at least in part, the monitor circuitry is configured to detect a heart rate of the user based on an EKG signal, where the case back is a first electrode of the monitor circuitry; and electrostatic discharge (ESD) protection circuitry connected between the case back and the gearbox, the ESD protection circuitry is configured to;
(i) pass electro-static charges in a path between;
(a) the gearbox and the crown dial and (b) the case back, and (ii) isolate the case back from the gearbox. - View Dependent Claims (2, 3, 4, 5, 6, 15, 16, 17, 18, 19, 20)
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7. A device for monitoring a heart rate, comprising:
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a case; heart rate detection circuitry provided within the case, at least in part, and configured to determine heart rate information from an electrocardiogram signal; a gear assembly provided within the case and connectively coupled to the heart rate detection circuitry and a crown dial; a case back of the case, the case back is configured to sense a user biometric and is connected to the heart rate detection circuitry; and an electrostatic discharge (ESD) protection diode provided within the case and connected between the case back and the gear assembly, the ESD diode having an anode connected to the case back and a cathode connected to the gear assembly, wherein the ESD protection diode is configured to;
(i) pass electro-static charges in a path between (a) the gear assembly and the crown dial and (b) the case back, and (ii) isolate the case back from the gear assembly. - View Dependent Claims (8, 9, 10, 11)
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12. A heart rate monitor, comprising:
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a monitor case; a display having both analog and digital components; a mechanism input for adjusting the display, the mechanism input is exposed external to the monitor case and can be manipulated by a user; a case back attached to the monitor case and configured as a sensor for receiving biometric data from a user; one or more secondary sensors for receiving additional biometric data from the user; monitor circuitry for receiving signals from the case back and the one or more secondary sensors, determining heart rate information from the signals, and providing the heart rate information to the display; and ESD protection circuitry connecting the case back to mechanism input, the ESD protection circuitry protects the monitor circuitry from a voltage discharge. - View Dependent Claims (13, 14)
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21. A wrist-worn device, comprising:
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a monitor case; a display connected to the monitor case at a front of the wrist-worn device; a clamp provided within the monitor case, the clamp secures a battery; monitor circuitry provided within the monitor case, at least in part, the monitor circuitry includes a microcontroller and is configured to detect a heart rate of a user based on an EKG signal; a case back connected to the monitor case at a back of the wrist-worn device, the case back contacts a user'"'"'s wrist when the wrist-worn device is worn by the user and is a first electrode of the monitor circuitry; a pushbutton of a switch, the switch connects the clamp and the microcontroller, to activate the monitor circuitry to cause a heart rate of the user to be displayed on the display, when the pushbutton is pushed by the user; the pushbutton is a second electrode of the monitor circuitry, and is exposed at a side of the monitor case; and electrostatic discharge (ESD) protection circuitry which connects the clamp and the case back, the ESD is configured to pass electro-static charges in a path which includes the pushbutton, the clamp and the case back. - View Dependent Claims (22)
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Specification