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).

Abstract: An actuator (102), suitable for use with an electronic device, is provided. The actuator includes a thin-film sensor (104) and a transducer (106). The transducer is bonded to the thin-film sensor. The thin-film sensor is capable of sensing an input, and the transducer is capable of providing a tactile output in response to the input.

Abstract: An input roller device (50) includes a roller (58), an eccentric rotating mass (59) within the roller, a drive mechanism (54, 56 and 57) causing the eccentric rotating mass to rotate within the roller, and a processor (52) coupled to the drive mechanism. The drive mechanism can also optionally include a drive link (57) if not directly driven by the shaft of the motor. The input roller device 50 can further include a rotary encoder (60) coupled to the roller such that the rotary encoder can provide data to the processor on a rotation of the roller. Note, the processor can be programmed to cause the input roller to provide a varied tactile feedback to the user to correspond to different events or to cause the input roller to provide a rolling resistance that varies in coordination with inputs from a user interface.

Abstract: The invention concerns a method (200) and a system (100) for ensuring audio safety in an audio device (110). The system includes a processor (112), a sensor (116), an analog safety circuit (114) and a first feedback loop (117). The processor is programmed to output an acoustic output signal (310, 410), the sensor monitors the acoustic output signal and the analog safety circuit is coupled to an output of the processor. The first feedback loop feeds the monitored acoustic signal from the sensor to the analog safety circuit. The analog safety circuit adjusts from a first level (312, 412) to a second level (316, 414) the acoustic output signal when the acoustic output signal exceeds a predetermined safety threshold (314, 420) such that the audio device has an output capacity that is capable of driving a sound pressure level of the acoustic output signal above the predetermined safety threshold.

Abstract: Multi-function transducers (130, 700) that are suitable for use in handheld devices such as cellular telephones (100, 900) and are capable of emitting audio, and generating accelerations of sufficient magnitude, and at frequencies that can be sensed by tactile sensation and which exhibit resonant modes that are characterized by center frequencies within a frequency range that can be sensed by tactile sensation, and specifically located between two musical notes on a musical scale are provided. Devices (100, 900) including such transducer are provided, and methods of operating such transducers are provided.

Abstract: A portable electronic device (100) includes a vibrating transducer having a resilient support and a first mass supported by the first resilient support forming a mechanical resonator, and an electrical circuit coupled to the first vibrating transducer to apply a drive signal. A plurality of tactile vibration transducers (130, 140) can work in unison to produce strong tactile stimulus (216, 228, 230).

Abstract: An audio file format is provided, which includes definitions for one or more instruments that are associated with one or more light groupings, where each light grouping includes one or more light sources. Received commands present in the audio file, and associated with an instrument definition, are compared to determine if the associated instrument definition corresponds to one of the one or more light groupings. If the associated instrument definition corresponds to a light grouping, then the commands are mapped to corresponding display effects, and the illumination of the one or more light sources of the respective light grouping is controlled. If the associated instrument definition of the received command corresponds to an audio instrument, then an audible output is controlled in accordance with the received command.

Abstract: A sound system assembly for use in a hand held device is provided. The sound system assembly includes a pair of transducers, and a corresponding pair of manifolds, which redirect the sound produced by the transducers away from the front or back surface of the device toward respective side facings of the hand held device. By redirecting the sound produced by the transducers, the apparent source of each audio source, corresponding to the respective opening in each of the sides of the hand held device through which the sound waves exit the device, is displaced further apart horizontally.