Method for abruptly stopping a linear vibration motor in portable communication device
First Claim
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1. A method of providing tactile feedback to the user of a portable communication device comprising:
- providing an attack signal to one of a vibration motor or a multi-function transducer; and
providing a stop signal out of phase with the attack signal to one of the vibration motor or the multi-function transducer.
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Abstract
A method is provided for abruptly stopping a vibration motor providing tactile feedback (406) to the user of a portable communication device (100). The method comprises providing a drive waveform (401) including an attack signal (402), and a stop signal (411) out of phase with the attack signal (402), to one of the vibration motor (235) or the multi-function transducer (130) to quickly stop the vibration. The drive waveform may include an optional sustain signal (407) subsequent to the attack signal (402) and prior to the stop signal (411). A file stored in memory (212) is accessed to provide the drive waveform (401).
76 Citations
21 Claims
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1. A method of providing tactile feedback to the user of a portable communication device comprising:
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providing an attack signal to one of a vibration motor or a multi-function transducer; and
providing a stop signal out of phase with the attack signal to one of the vibration motor or the multi-function transducer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of reducing vibrations of tactile feedback within a portable communication device comprising:
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providing a profile for a drive waveform, the drive waveform comprising an attack signal and a stop signal;
driving an audio amplifier in response to the profile; and
driving a vibration device in response to an output from the audio amplifier. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of providing tactile feedback to the user of a portable communication device including a processor, a digital-to-analog device, an audio amplifier, a memory, and a vibrating device, the method comprising:
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generating instructions from the processor to provide a drive waveform, including an attack signal followed by a stop signal, to the digital-to-analog device;
driving the audio amplifier by the digital-to-analog device in response to the drive waveform;
vibrating the vibrating device in response to an analog signal from the audio amplifier. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification