SYSTEM AND METHOD FOR BiDIRECTIONAL COMMUNICATION BETWEEN STYLUS AND STYLUS SENSOR CONTROLLER
AssigneeWacom Co., Ltd.
InventorsDavid Charles Fleck, Sadao Yamamoto
Life of this patent
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Abstract
A method is provided to interface an active stylus with a sensor controller, wherein the sensor controller is coupled to a sensor configured to receive input from the active stylus. In the method the sensor controller caches stylus capability information of the active stylus. The stylus capability information includes setting information for inking used by an application program executed to display input from the active stylus on the sensor. The active stylus generates a hash value of the stylus capability information and transmits the hash value to the sensor controller when the active stylus enters a sensing zone of the sensor controller.
Claims20
An active stylus communicable with a sensor coupled to a sensor controller, the active stylus comprising:
- a memory storing a preferred color value;
- a switch which, when operated by a user, changes the preferred color value stored in the memory;
- and
- circuitry, which is communicably coupled to the memory and the switch and which, in operation, repeatedly attempts to detect uplink signals transmitted from the sensor and, responsive to detection of an uplink signal, triggers transmission of data corresponding to the preferred color value stored in the memory to the sensor.
An active stylus communicable with a sensor coupled to a sensor controller, the active stylus comprising:
- a memory storing an inking parameter value;
- a switch which, when operated by a user, changes the inking parameter value stored in the memory;
- and
- circuitry, which is communicably coupled to the memory and the switch and which, in operation, repeatedly attempts to detect uplink signals transmitted from the sensor and, responsive to detection of an uplink signal, triggers transmission of data corresponding to the inking parameter value stored in the memory to the sensor.
Dependencies are inferred from the claim text.