# US 10,481,644 B1 · Flip position detection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,481,644 B1 - Document ID: US10481644B1 - Status: Granted - Kind: B1 - Application number: 16/273,569 - Filed: 2019-02-12 - Granted: 2019-11-19 - Earliest claimed: 2019-02-12 - Assignees: Motorola Mobility LLC - Applicants: Motorola Mobility LLC - Inventors: Wayne Garrett Morrison; Dennis J. Budnick; Sanjay N. Kadiwala - Web page: https://patentgrep.com/patent/US10481644B1 ## CPC - G06F 1/1677: {for detecting open or closed state or particular intermediate positions assumed by movable parts of the enclosure, e.g. detection of display lid position with respect to main body in a laptop, detection of opening of the cover of battery compartment} - G06F 1/1616: {with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position} - G06F 1/1681: {Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683)} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract In aspects of flip position detection, a mobile device has a device housing with a base section and a flip section that folds onto the base section. The mobile device has a hinge that operates between open and closed positions of the device, and the flip section of the device housing operates to open relative to the base section of the device housing. An inductor is positioned in the device housing to have an inductance as the hinge operates to open and close the device housing. A metal plate is coupled to the hinge in a configuration that translates the metal plate relative to the inductor as the hinge operates between the open and closed positions. A sensor is implemented to detect the inductance between the inductor and the metal plate, where inductance values indicate the closed and open positions of the device housing. ## Claims ### Claim 1 A mobile device, comprising: a device housing having a base section and a flip section operable to fold onto the base section in a closed position of the mobile device; a hinge operable between the closed position and an open position of the mobile device, the flip section of the device housing operable to open relative to the base section of the device housing; an inductor positioned in the device housing to have an inductance as the hinge operates to said open and close the device housing; a metal plate coupled to the hinge in a configuration operable to translate the metal plate relative to the inductor as the hinge operates between the open position and the closed position, the inductor and the metal plate rotating with the hinge as it operates between the open position and the closed position; and a sensor to detect the inductance between the inductor and the metal plate, a first inductance value indicates the closed position of the device housing and a second inductance value indicates the open position of the device housing. ### Claim 2 (depends on 1) The mobile device as recited in claim 1, wherein the metal plate remains approximately parallel with the inductor as the metal plate translates approximately perpendicular relative to the inductor. ### Claim 3 (depends on 1) The mobile device as recited in claim 1, wherein a third inductance value indicates a position of the hinge between the open position and the closed position. ### Claim 4 (depends on 1) The mobile device as recited in claim 1, wherein multiple inductance values each correlate to one of multiple positions of the hinge between the open position and the closed position. ### Claim 5 (depends on 1) The mobile device as recited in claim 1, wherein the inductor is positioned in the device housing on a flexible printed circuit that couples to the sensor. ### Claim 6 (depends on 1) The mobile device as recited in claim 1, further comprising a device controller for multi-position determination of the flip section of the device housing relative to the base section of the device housing, the multi-position determination based on the sensor detection of the inductance changing as the hinge operates between the open position and the closed position. ### Claim 7 (depends on 1) The mobile device as recited in claim 1, further comprising a device controller to initiate an operating state change of the mobile device based on detection of the second inductance value that indicates the open position of the device housing. ### Claim 8 (depends on 1) The mobile device as recited in claim 1, further comprising a device controller to initiate turning-on a display device based on detection of the second inductance value that indicates the open position of the device housing. ### Claim 9 A hinge system, comprising: a hinge operable between an open position and a closed position; an inductor positioned to have an inductance as the hinge operates between the open position and the closed position; a metal plate coupled to the hinge in a configuration operable to translate the metal plate relative to the inductor as the hinge operates between the open position and the closed position, the inductor and the metal plate rotating with the hinge as it operates between the open position and the closed position; and a sensor to detect the inductance between the inductor and the metal plate, an increase in the inductance indicates the closed position of the hinge and a decrease in the inductance indicates the open position of the hinge. ### Claim 10 (depends on 9) The hinge system as recited in claim 9, wherein the metal plate remains approximately parallel with the inductor as the metal plate translates approximately perpendicular relative to the inductor. ### Claim 11 (depends on 9) The hinge system as recited in claim 9, wherein an inductance value indicates a position of the hinge between the open position and the closed position. ### Claim 12 (depends on 9) The hinge system as recited in claim 9, wherein the inductor is a component of an inductive circuit formed on a flexible printed circuit that couples to the sensor. ### Claim 13 (depends on 9) The hinge system as recited in claim 9, wherein the inductance is detectable by the sensor to indicate multiple positions of the hinge as the inductance changes with the hinge operating between the open position and the closed position. ### Claim 14 (depends on 9) The hinge system as recited in claim 9, further comprising an adjustable controller to define the open position of the hinge based on an inductance value that is detectable as the hinge operates to open and close. ### Claim 15 A method, comprising: increasing a distance between a metal plate and an inductor, the metal plate coupled to a hinge in a configuration operable to translate the metal plate relative to the inductor as the hinge operates to open, the inductor and the metal plate rotating along with the hinge as it operates to open and close; detecting an inductance between the inductor and the metal plate, the inductance indicating an open position of the hinge as the distance between the metal plate and the inductor increases; decreasing the distance between the metal plate and the inductor as the metal plate translates relative to the inductor as the hinge operates to close; and detecting the inductance between the inductor and the metal plate, the inductance indicating a closed position of the hinge as the distance between the metal plate and the inductor decreases. ### Claim 16 (depends on 15) The method as recited in claim 15, wherein the metal plate remains approximately parallel with the inductor as the metal plate translates approximately perpendicular relative to the inductor. ### Claim 17 (depends on 15) The method as recited in claim 15, further comprising: detecting an inductance value that indicates a position of the hinge between the open position and the closed position. ### Claim 18 (depends on 15) The method as recited in claim 15, further comprising: initiating an operating state change of a mobile device based on the detecting the inductance that indicates the open position of the hinge. ### Claim 19 (depends on 15) The method as recited in claim 15, further comprising: determining multiple positions of the hinge as the inductance changes with the hinge operating to open and close. ### Claim 20 (depends on 15) The method as recited in claim 15, further comprising: receiving an input of an inductance value that defines the open position of the hinge, and the inductance value being detectable as the hinge operates to open.