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Frequency-domain haptic waveform compensation for haptic transducers

A transducer and haptic technology, applied in the field of haptic systems, can solve problems such as limiting effectiveness

Pending Publication Date: 2022-01-28
CIRRUS LOGIC INT SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, haptic actuators are not without part-to-part differences, which may limit the effectiveness of such careful design when applied to different LRA parts.

Method used

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  • Frequency-domain haptic waveform compensation for haptic transducers
  • Frequency-domain haptic waveform compensation for haptic transducers
  • Frequency-domain haptic waveform compensation for haptic transducers

Examples

Experimental program
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Embodiment Construction

[0020] figure 1 A block diagram of selected components of an example electronic device 102 is shown in accordance with an embodiment of the disclosure. Such as figure 1 As shown, electronic device 102 may include housing 101 , controller 103 , memory 104 , force sensor 105 , microphone 106 , linear resonant actuator 107 , radio transmitter / receiver 108 , speaker 110 , and haptic drive system 112 .

[0021] Housing 101 may include any suitable housing, case, or other enclosure for housing the various components of electronic device 102 . Housing 101 may be constructed of plastic, metal, and / or any other suitable material. Furthermore, in some embodiments, housing 101 may be adjusted (eg, sized and shaped) such that electronic device 102 is easily carried on the person of the user of electronic device 102 . Accordingly, electronic device 102 may include, but is not limited to, a smartphone, tablet computing device, handheld computing device, personal digital assistant, notebo...

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Abstract

A method for minimizing post-playback oscillation during playback of a haptic playback waveform to a haptic transducer may include determining whether a frequency response of the haptic playback waveform has a notch with a notch frequency at approximately a resonant frequency of the haptic transducer and, responsive to the notch frequency differing from the resonant frequency, modifying the haptic playback waveform for playback to the haptic transducer by shifting the notch frequency to approximately the resonant frequency.

Description

technical field [0001] The present disclosure relates generally to electronic devices (e.g., mobile devices, game controllers, dashboards, etc.) A haptic system for use in haptic feedback for capacitive sensors and / or other suitable applications. Background technique [0002] Linear resonant actuators (Linear resonant actuator, LRA) and other vibration actuators (e.g., rotary actuators, vibration motors, etc.) are increasingly used in mobile devices (e.g., mobile phones, personal digital assistants, video game controllers, etc.) to generate vibration feedback for user interaction with these devices. Typically, a force / pressure sensor detects user interaction with the device (eg, a finger pressing a virtual button of the device), and in response thereto, a linear resonant actuator vibrates to provide feedback to the user. For example, a linear resonant actuator can vibrate in response to a force to simulate to the user the feel of a mechanical button click. [0003] The LR...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/01
CPCG06F3/016G06F3/0416H04R3/04
Inventor 马尔科·扬科张国琴凯尔·威尔金森
Owner CIRRUS LOGIC INT SEMICON