Haptic output generation with dynamic feedback control

摘要

A device includes a haptic actuator to generate mechanical force stimuli in accordance with a triggering event. A haptic control system includes an accelerometer to measure the haptic response of the device. Signaling from the accelerometer is analyzed in view of an intended haptic response. A control signal may be modified in view of the analysis to correct out-of-tolerance conditions of the haptic response. This correction may occur in real time or near-real time. Component aging, shifting device performance, or other factors may be compensated for and user expectations satisfied accordingly.

主权项

1. A portable electronic device, comprising:
a processor configured to:
receive one or more haptic waveform parameters from a server; andprovide a control signal configured to cause a haptic output comprising a vibrotactile haptic force to a portion of the portable electronic device; a haptic actuator controller configured to receive the control signal and to provide a haptic waveform signal in accordance with the one or more haptic waveform parameters communicated by the control signal; a haptic actuator configured to receive the haptic waveform signal and to generate the haptic output in accordance with the haptic waveform signal, the haptic actuator mechanically coupled to a structure of the portable electronic device; an accelerometer mechanically coupled to the structure of the portable electronic device and configured to provide an accelerometer signal indicative of a haptic response of the portable electronic device to the haptic output comprising the vibrotactile haptic force; and the processor further configured to:
send telemetry data indicative of the accelerometer signal to the server to determine by the server that the haptic response of the user device is within a specification for the haptic output;compare the accelerometer signal to the specification for the haptic output to determine the haptic response of the portable electronic device deviates from a predefined haptic response waveform by greater than a tolerance value;receive from the server one or more generated adjusted haptic waveform parameters that are based on the comparing, by the server, the telemetry data indicative of the accelerometer signal to the specification for the haptic output; andgenerate a modified control signal based on the adjusted haptic waveform parameters received from the server to adjust the haptic output to correct the haptic response by causing the haptic response of the portable electronic device to be within the tolerance value of the predefined haptic response waveform.