Touch screen interfaces with pulse oximetry
First Claim
Patent Images
1. A touch screen interface configured to respond to contact from a user, the touch screen interface comprising:
- a touch screen substrate;
an optical energy source positioned to illuminate the touch screen substrate to cause optical energy having a specified wavelength to be internally reflected within the touch screen substrate;
a detector positioned to receive optical energy having the specified wavelength transmitted through the touch screen interface, wherein the detector is arranged to generate a detection signal that is at least in part responsive to contact to the touch screen substrate, wherein the detection signal is indicative of the received optical energy at the specified wavelength; and
a processor coupled to the detector and configured to receive the detection signal from the detector, and determine a pulse rate associated with the user based at least in part on the detection signal received from the detector.
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Abstract
Examples of touch screen interfaces with pulse oximetry are generally described, along with examples of methods of determining pulse rate, blood oxygen level, or both, with a touch screen interface.
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Citations
28 Claims
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1. A touch screen interface configured to respond to contact from a user, the touch screen interface comprising:
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a touch screen substrate; an optical energy source positioned to illuminate the touch screen substrate to cause optical energy having a specified wavelength to be internally reflected within the touch screen substrate; a detector positioned to receive optical energy having the specified wavelength transmitted through the touch screen interface, wherein the detector is arranged to generate a detection signal that is at least in part responsive to contact to the touch screen substrate, wherein the detection signal is indicative of the received optical energy at the specified wavelength; and a processor coupled to the detector and configured to receive the detection signal from the detector, and determine a pulse rate associated with the user based at least in part on the detection signal received from the detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 26)
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15. A touch screen interface configured to respond to contact from a user, the touch screen interface comprising:
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a touch screen substrate; a first optical energy source positioned to illuminate the touch screen substrate with optical energy having a first wavelength; a second optical energy source positioned to illuminate the touch screen substrate with optical energy having a second wavelength, wherein at least one of the first optical energy source or the second optical energy source is positioned relative to the touch screen substrate to cause optical energy to be internally reflected within the touch screen substrate; a first detector positioned to receive optical energy having the first wavelength transmitted through the touch screen interface, wherein the first detector is arranged to generate a first detection signal that is at least in part responsive to the contact to the touch screen substrate, and the first detection signal is indicative of the received optical energy at the first wavelength; and a second detector positioned to receive optical energy having the second wavelength transmitted through the touch screen interface, wherein the detector is arranged to generate a second detection signal that is at least in part responsive to the contact to the touch screen substrate, and the second detection signal is indicative of the received optical energy at the second wavelength. - View Dependent Claims (16, 27)
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17. A method for a touch screen interface to detect a pulse rate associated with a user when the user touches the touch screen interface, the method comprising:
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illuminating a touch screen substrate from a first side of the touch screen substrate with optical energy having a specified wavelength for pulse rate detection; receiving from a second side different than the first side optical energy transmitted through the touch screen substrate responsive to the contact with the touch screen substrate and generating a detection signal responsive to the received optical energy; identifying variations in the detection signal; and determining the pulse rate associated with the user based at least in part on the identified variations in the detection signal. - View Dependent Claims (18, 19, 20)
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21. A method for a touch screen interface to detect either a blood oxygen level associated with a user and/or a pulse rate associated with the user, responsive to a touch to the touch screen interface, the method comprising:
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illuminating a touch screen substrate with optical energy having a first wavelength and a second wavelength such that at least a portion of the optical energy is internally reflected within the touch screen substrate, wherein the first wavelength and the second wavelength are selected appropriately for an indication of blood oxygen level associated with the user; detecting optical energy transmitted from the touch screen substrate to generate a detection signal, wherein the detection signal indicates an amount of transmitted optical energy at the first or second wavelengths, wherein the amount of transmitted optical energy at the first or the second wavelengths varies at least in part in response to the touch; and determining the blood oxygen level associated with the user from the detection signal based at least part on a difference between the amount of optical energy detected at the first and second wavelengths. - View Dependent Claims (22, 23, 24, 25, 28)
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Specification