Information handling system object detection at housing close event
A portable information handling system having a display on each of opposing rotationally coupled housing portions monitors for objects disposed on a display and takes corrective action if the housing portions rotate to a closed position that impacts the object on an opposing display. For instance, a keyboard or stylus placed on one display is detected by the touchscreen, by Hall sensors, by IR sensors and or other sensors. The rotational position and angular velocity of the housing portions are tracked and analyzed to take corrective action if the housing portions will reach a closed position in less than a predetermined time. The corrective action may include visual and audible warnings and/or braking at a hinge that works against hinge rotation to slow or stop impact by the object and display.
1. An information handling system comprising:
a housing having first and second portions;
a hinge rotationally coupling the housing first and second portions to rotate between at least closed and tablet positions;
plural processing components disposed in the housing and operable to process information;
one or more displays disposed over the housing, the one or more displays exposed at the upper surface of the first and second housing portions;
one or more detection sensors integrated in the housing and operable to detect an object on one or more of the one or more displays;
a rotation sensor operable to detect rotation of the first and second housing portions relative to each other; and
an interference monitor interfaced with the one or more detection sensors and the rotation sensor, the interference monitor operable to predict impact of a housing portion and the object as occurring within a predetermined time threshold and, in response, to command a corrective action.
2. The information handling system of claim 1 wherein:
the object comprises a keyboard placed on one of the one or more displays, the keyboard having a magnet; and
the one or more detection sensors comprises a Hall sensor disposed in the housing and operable to detect the magnet.
3. The information handling system of claim 1 wherein:
the object comprises a stylus; and
the one or more detection sensors comprises a touchscreen integrated in the one or more displays.
4. The information handling system of claim 1 wherein:
the rotation sensor comprises a first accelerometer on the first housing portion and a second accelerometer on the second housing portion; and
the interference monitor comprises logic that compares accelerations of the first and second accelerometers to detect angular velocity of the first and second housing portions about the hinge.
5. The information handling system of claim 1 further comprising:
a hinge brake interfaced with the hinge and operable to adjust resistance of the hinge to rotation;
wherein the corrective action comprises a command to apply the hinge brake to increase resistance of the hinge to rotation.
6. The information handling system of claim 1 wherein the corrective action comprises activation of a haptic device at the housing.
7. The information handling system of claim 1 wherein the corrective action comprises sounding an audible alert with a speaker.
8. The information handling system of claim 1 wherein:
the one or more detection sensors comprise an infrared sensor aligned to detect objects on one or more of the one or more displays.
9. The information handling system of claim 1 wherein the one or more displays comprise a first liquid crystal display disposed over the first housing portion and a second liquid crystal display disposed over the second housing portion.
10. A method for protecting an information handling system integrated display, the method comprising: monitoring the display to detect one or more objects on the display; monitoring a housing to detect predetermined angular velocity of housing portions to a closed position in which the display contacts the one or more objects; and in response to detecting the predetermined angular velocity, performing a corrective action; wherein the monitoring the housing further comprises: detecting an angle of rotation of the housing from a closed position; and issuing a command for the corrective action when the angle of rotation and angular velocity provide a threshold time until rotation to the closed position completes.
11. The method of claim 10 wherein the monitoring the display to detect one or more objects on the display further comprises:
detecting motion of the housing towards a closed position; and
in response to the detecting motion, scanning the display surface with an infrared sensor.
12. The method of claim 10 further comprising:
detecting the housing in a portrait mode; and
in response to the detecting the housing in a portrait mode, disabling the monitoring the display.
13. The method of claim 10 wherein the performing corrective action further comprises increasing resistance against rotation of the housing.
14. The method of claim 10 wherein the performing corrective action further comprises generating a haptic response at the housing.
15. The method of claim 10 wherein the performing corrective action further comprises presenting a warning at the display.
16. A system for protecting a display from damage by an object, the system comprising: a detection sensor operable to detect the object on the display; a rotation sensor operable to detect a predetermined rotation condition of first and second housing portions; and non-transitory memory storing an interference monitor operable to execute on a processor to perform a corrective action when an object is detected on the display with the predetermined rotation condition; wherein the predetermined rotation condition comprises an angular velocity and rotational orientation of the first and second housing portions associated with achieving a closed position of the first and second housing portions within a predetermined time.
17. The system of 16 wherein: the object comprises a keyboard held in place on the display by magnets; and the detection sensor comprises a Hall switch.
18. The system of 16 wherein: the object comprises an active stylus having a capacitive tip; and the detection sensor comprises a touchscreen display.