SYSTEM AND METHOD FOR BIDIRECTIONAL COMMUNICATION BETWEEN STYLUS AND STYLUS SENSOR CONTROLLER

摘要

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 defines data frames consisting of more than one time slot usable for receiving packets from the stylus. The active stylus transmits, in response to a request from the sensor controller, a signal including stylus capability information. The sensor controller determines, based on the stylus capability information, a downlink time slot allocation for use by the active stylus to transmit packets to the sensor controller. The sensor controller transmits the downlink time slot allocation to the active stylus.

主权项

1. A method of interfacing an active stylus with a sensor controller, the sensor controller coupled to a sensor configured to receive input from the active stylus, the method comprising:
the sensor controller defining data frames consisting of more than one time slot usable for receiving packets from the stylus; transmitting, from the active stylus in response to a request from the sensor controller, a signal including stylus capability information; the sensor controller determining, based on the stylus capability information, a downlink time slot allocation for use by the active stylus to transmit packets to the sensor controller; and transmitting, from the sensor controller to the active stylus, the downlink time slot allocation.