# US 8,786,575 B2 · Touch-sensitive device and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,786,575 B2 - Document ID: US8786575B2 - Status: Granted - Kind: B2 - Application number: 12/467,943 - Filed: 2009-05-18 - Published: 2010-11-18 - Granted: 2014-07-22 - Earliest claimed: 2009-05-18 - Assignees: Empire Technology Development LLC - Applicants: Seth Adrian Miller - Inventors: Seth Adrian Miller - Web page: https://patentgrep.com/patent/US8786575B2 ## CPC - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - A61B 5/14532: {for measuring glucose, e.g. by tissue impedance measurement} - A61B 5/1455: using optical sensors, e.g. spectral photometrical oximeters - A61B 5/6898: {Portable consumer electronic devices, e.g. music players, telephones, tablet computers} - G06F 3/042: by opto-electronic means - G06F 3/0421: {by interrupting or reflecting a light beam, e.g. optical touch-screen} - G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - G06V 40/13: Sensors therefor - A61B 5/14546: {for measuring analytes not otherwise provided for, e.g. ions, cytochromes} - A61B 5/14551: {for measuring blood gases} - G01N 2021/3144: {for oxymetry} - G01N 2021/6419: {Excitation at two or more wavelengths} - G06V 40/1341: {Sensing with light passing through the finger} - G06V 40/14: Vascular patterns - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract Techniques are generally described for touch-sensitive devices with biometric information determination capabilities. The touch-sensitive device may include one or more of a transmitter, a receiver, and a processor. The transmitter may be configured to emit light towards a surface of the touch-sensitive device and the receiver may be configured to receive reflected light from a touch to the touch-sensitive device. The processor may be arranged to receive signals from the receiver and determines biometric information, and in some examples location of touch, based on the signals. ## Claims ### Claim 1 A touch sensitive device having spectroscopy components, the touch sensitive device comprising: a display; a touch panel arranged to generate a signal responsive to a touch, wherein the display is viewable through the touch panel; a transmitter operable to transmit optical energy at a first wavelength to the touch panel, the first wavelength being useful for spectroscopically detecting an analyte; a receiver operable to receive optical energy reflected responsive to the touch; and a processor coupled to the receiver and arranged to analyze the reflected optical energy to determine, responsive to the touch and using spectroscopy, concentration of the analyte in blood determined from the reflected optical energy using chemometric algorithms. ### Claim 2 (depends on 1) The touch sensitive device of claim 1, wherein the receiver comprises a charge-coupled device. ### Claim 3 (depends on 1) The touch sensitive device of claim 1, wherein the touch is initiated by a user, wherein the receiver is operable to split the received optical energy into a first portion and a second portion, and wherein the processor is configured to determine a location of the touch on the touch panel with the first portion and further configured to determine the concentration of the analyte in the blood of the user with the second portion. ### Claim 4 (depends on 1) The touch sensitive device of claim 1, wherein the transmitter is configured to emit optical energy in the range of approximately 800 nanometers to approximately 2500 nanometers. ### Claim 5 (depends on 1) The touch sensitive device of claim 1, wherein the transmitter comprises one or more light emitting diodes. ### Claim 6 (depends on 1) The touch sensitive device of claim 1, wherein the touch sensitive device comprises a portable hand held device. ### Claim 7 (depends on 1) The touch sensitive device of claim 1, wherein the concentration of the analyte in blood is the glucose level of a user creating the touch. ### Claim 8 (depends on 1) The touch sensitive device of claim 1, wherein the processor is configured to transmit the determined concentration of the analyte in blood to the display, where the display is configured for presenting the concentration of the analyte in blood. ### Claim 9 (depends on 1) The touch sensitive device of claim 1, wherein the touch panel is infrared transparent. ### Claim 10 (depends on 1) The touch sensitive device of claim 1, wherein the touch event is initiated by contact of the touch panel with a finger of the user. ### Claim 11 (depends on 1) The touch sensitive device of claim 1, wherein the transmitter is provided along a periphery of the touch panel. ### Claim 12 (depends on 1) The touch sensitive device of claim 1, wherein the transmitter is further configured to emit light at a second wavelength. ### Claim 13 (depends on 12) The touch sensitive device of claim 12, further comprising a second receiver operable to receive reflected optical energy at the second wavelength wherein the processor may analyze additional spectroscopic information from reflected energy at the second wavelength. ### Claim 14 A method for determining a concentration of an analyte in blood, the method comprising: transmitting optical energy having a first wavelength to a touch panel of a display, wherein the display is viewable through the touch panel; receiving optical energy at the first wavelength responsive to a touch event initiated by a user; using the received optical energy to provide location information about the touch event; and determining, from the received optical energy using spectroscopy, a concentration of analyte in blood of the user responsive to the touch event. ### Claim 15 (depends on 14) The method of claim 14, wherein transmitting the optical energy illuminates the touch panel. ### Claim 16 (depends on 14) The method of claim 14, wherein the first wavelength is between approximately 900 nm and approximately 2500 nm. ### Claim 17 (depends on 14) The method of claim 14, further comprising generating an infrared absorbance spectra for an analyte of interest, wherein the first wavelength is based on the infrared absorbance spectra. ### Claim 18 (depends on 14) The method of claim 14, wherein determining the concentration of the analyte in blood includes applying chemometric algorithms to the received optical energy. ### Claim 19 (depends on 14) The method of claim 14, further comprising providing a visual display of the determined concentration of the analyte in blood. ### Claim 20 (depends on 14) The method of claim 14, further comprising storing the determined concentration of the analyte in blood. ### Claim 21 (depends on 14) The method of claim 14, further comprising contacting the touch panel with a finger of the user to initiate the touch event. ### Claim 22 (depends on 14) The method of claim 14, wherein the transmitting includes transmitting optical energy from a periphery of the touch panel.