| Patent application number | Description | Published |
|---|
| 20100260361 | REVERSIBLE PERSONAL AUDIO DEVICE CABLE COUPLING - A apparatus and method for enabling signals representing a first audio channel and a second audio channel to be conveyed to a first earpiece and a second earpiece, respectively, regardless of which of the first and second earpieces a cable providing both the signals representing the first and second audio channels is coupled to, wherein a first acoustic driver of the first earpiece acoustically outputs the first audio channel and a second acoustic driver of the second earpiece acoustically outputs the second audio channel. | 10-14-2010 |
| 20100278348 | Intercom Headset Connection and Disconnection Responses - A headset is able to be coupled via a cable to an intercom system, is able to be wirelessly coupled to a wireless device via a wireless transceiver of the headset, and is able to be connected to a wired device via another cable. A controller of the headset separately monitors the microphone conductors and audio conductors by which the headset may be coupled to the intercom system to detect whether or not one or both of a communications microphone and an acoustic driver of the headset are coupled to the intercom system, and monitors the operating state of the wireless transceiver to detect whether or not the wireless transceiver is inactive, on standby or in use; and selectively couples a system ground conductor to one of the microphone conductors, selectively provides a local sidetone, and/or selectively provides a local microphone bias voltage in response to what is observed through such monitoring. | 11-04-2010 |
| 20100278349 | Intercom Headset Connection and Disconnection Detection - A headset is able to be coupled via a cable to an intercom system, is able to be wirelessly coupled to a wireless device via a wireless transceiver of the headset, and is able to be connected to a wired device via another cable. A controller of the headset separately monitors the microphone conductors and audio conductors by which the headset may be coupled to the intercom system to detect whether or not one or both of a communications microphone and an acoustic driver of the headset are coupled to the intercom system, and monitors the operating state of the wireless transceiver to detect whether or not the wireless transceiver is inactive, on standby or in use; and selectively couples a system ground conductor to one of the microphone conductors, selectively provides a local sidetone, and/or selectively provides a local microphone bias voltage in response to what is observed through such monitoring. | 11-04-2010 |
| 20100278355 | Feedforward-Based ANR Adjustment Responsive to Environmental Noise Levels - A compression circuit of a device providing feedforward-based ANR monitors the electric signal output by a feedforward microphone for indications of the voltage levels of the electric signal output by the feedforward microphone ceasing to have a linear relationship with the acoustic levels of the sounds detected by the feedforward microphone. As long as there are no such indications, the compression circuit relays a signal to a feedforward anti-noise generator that is at least representative of the electric signal output by the feedforward microphone in which the sounds represented are not compressed, perhaps by directly relaying the signal output by the feedforward microphone as feedforward reference sounds. However, in response to detecting such indications, the compression circuit compresses the sounds represented by the signal output by the feedforward microphone prior to providing those sounds to the feedforward anti-noise generator as feedforward reference sounds, perhaps by attenuating the signal output by the feedforward microphone. | 11-04-2010 |
| 20110012667 | Zero Power Drain Pushbutton On Switch - A normally-open pushbutton switch is coupled to and cooperates with a pair of MOSFETs to provide a power on switch function for a personal audio device that does not require power to be drawn from a power source to monitor the pushbutton switch while awaiting operation of the pushbutton switch to cause the personal audio device to be powered on. | 01-20-2011 |
| 20110013780 | Adaptive Headset Connection Status Sensing - A controller of a personal audio device, on multiple occasions, monitors a conductor by which it is able to be coupled to another device for the end to an instance of signal activity, and following the end of signal activity, injects a current into the conductor and measures the resulting voltage to calculate an adaptive threshold voltage and to compare the measured voltage to the adaptive threshold to determine at least whether or not the conductor of the personal audio device is coupled to another device. | 01-20-2011 |
| 20110227631 | Zero Power Drain Pushbutton Controls - A plurality of normally-open pushbutton switches are coupled to and cooperate with a pair of MOSFETs to provide each pushbutton switch of the plurality of pushbutton switches with a power on switch function for a personal audio device that does not require power to be drawn from a power source to monitor each of the pushbutton switches or to identify which of the pushbutton switches was manually operated to power on the personal audio device while awaiting operation of one of the pushbutton switches to cause the personal audio device to be powered on. | 09-22-2011 |
| 20110268295 | Connection-Responsive Audio Mixing - Apparatus and method to mix audio provided by a radio with audio provided by an ICS in which the audio of the radio being mixed with audio provided by the ICS and presented to one ear of a user, and in which audio provided by the ICS is presented to the other ear of the user without being mixed with audio provided by the radio. | 11-03-2011 |
| 20110269411 | Connection-Responsive Push-to-Talk - Apparatus and method to monitor the coupling of one or two audio devices and to augment the function of a PTT switch to causes the PTT function of one audio device to be engaged regardless of which of the two operated positions into which the switch is moved in response to there being only the one audio device coupled to the apparatus and in response to the one audio device being a radio, to cause the PTT function of either one of two audio devices to be selected to be engaged depending on which operated position to which the PTT switch is moved in response to there being only one audio device in the form of an intercom system (ICS) coupled to the apparatus with the other audio device in the form of a radio being coupled through the ICS, and to allow the PTT to be used to select the PTT function of either one of two audio devices to be engaged in response to there being two audio devices in the form of radios coupled to the apparatus. | 11-03-2011 |
| 20110269412 | Selective Push-to-Talk - A push-to-talk (PTT) switch with biasing to a first center position in which in which the PTT function of neither one of up to two audio devices is engaged, also having a first operated position to which the switch may be moved by hand operation to cause the PTT function of the first one of the two audio devices to be engaged, and further having a second operated position to which the switch may be moved by hand operation to cause the PTT function of the second one of the two audio devices to be engaged. | 11-03-2011 |
