Information handling system variable capacitance totem input management
First Claim
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1. An information handling system comprising:
- a processor executing instructions to process information;
a memory interfaced with the processor, the memory storing the information;
a display interfaced with the processor and memory, the display presenting the information as visual images, the display having touchscreen operable to detect touch inputs made at the display;
a totem resting on the touchscreen, the totem having a body with a bottom surface and on or more contact surfaces extending from the bottom surface, one or more of the contact surfaces having a conductive interface to the body, the conductive interface biased to a non-conductive state and moveable to a conductive state by a force pressing on the totem body towards the display; and
a touch controller interfaced with the touchscreen and the processor, the touch controller analyzing touches detected at the touchscreen and differentiating inputs based at least in part upon whether one or more of the contact surfaces have a conductive state or non-conductive state.
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Abstract
An information handling system touchscreen display interacts with totem devices by recognizing and tracking spectral signatures of the totem devices so that totem positions are reported as a single length, width and rotational orientation message to a host operating system. Ignore zones and hysteresis time periods are defined from the position message based upon totem context so that the host operating system processes touchscreen inputs with minimal latency and improved accuracy. Communication and battery charging are provided to the totem by the touchscreen display will illumination directed to the totem position.
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Citations
20 Claims
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1. An information handling system comprising:
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a processor executing instructions to process information; a memory interfaced with the processor, the memory storing the information; a display interfaced with the processor and memory, the display presenting the information as visual images, the display having touchscreen operable to detect touch inputs made at the display; a totem resting on the touchscreen, the totem having a body with a bottom surface and on or more contact surfaces extending from the bottom surface, one or more of the contact surfaces having a conductive interface to the body, the conductive interface biased to a non-conductive state and moveable to a conductive state by a force pressing on the totem body towards the display; and a touch controller interfaced with the touchscreen and the processor, the touch controller analyzing touches detected at the touchscreen and differentiating inputs based at least in part upon whether one or more of the contact surfaces have a conductive state or non-conductive state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for interfacing an information handling system with a totem device, the method comprising:
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detecting a foot contact surface of the totem on a touchscreen display surface; determining the totem in a conductive state if the contact surface has a first capacitance; determining the totem in a non-conductive state if the contact surface foot has a second capacitance; and responding to totem inputs in a first manner if a conductive state is determined and a second manner if a non-conductive state is determined. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An information handling system totem input device comprising:
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a main body sized to accept inputs from an end user hand; plural feet extending from the main body bottom surface; plural biasing devices, each biasing device disposed between one of the plural feet and the main body and acting to separate the associated one of the plural feet from the main body; and a touch controller interfaced with a capacitive touch sensor and detecting first and second conductive states associated with the plural feet based at least in part upon the distance between the plural feet and the main body. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification