Abstract: An electronic system includes a signal processor, a control signal generator, and an I/O interface. The signal processor has a first output signal and the first output signal is characterized by at least a first property and a second property. The control signal generator is configured to produce first and second control signals in accordance with the first and second properties of the first output signal, respectively. The I/O interface is configured to couple at least the first and second control signals to an output device. In some embodiments, the first output signal is a pulse width modulated signal having a software-specified pulse width and a software-specified repeat frequency. In some embodiments, the first property of the first output signal is the signal's duty cycle and the second property is the signal's frequency.

Abstract: A system and methods for voice controlled operation of a media player are provided. In one embodiment, a method includes detecting user positioning of a microphone power switch to an off position, detecting user positioning of the microphone power switch to an on position within a predetermined period of time and entering a voice recognition mode, by the media player, based on the user positioning of the microphone power switch to the on position within the predetermined period of time. The method may further include detecting one or more output signals of the microphone, detecting a voice command based on the one or more output signals of the microphone, and controlling operation of the media player based on the voice command, wherein the media player outputs a graphical display associated with the voice command.

Abstract: System and method for operating a motor using a single general purpose input/output (GPIO) pin of a controller. In one embodiment, a control circuit may include a first terminal coupled to a GPIO pin of a controller. The first terminal can be configured to receive, and output, at least one or more signals. The control circuit may include a plurality of elements coupled to the first terminal, and motor driver circuit output terminal, such that the control circuit may be configured to output one more control signals to the motor driver circuit output terminal for control the motor driver circuit. Motor driver control signals may be based, at least in part, on one or more signals received from the first terminal.

Abstract: A configurable amplifier circuit for a karaoke player is described. In one embodiment, a karaoke player includes: a DVD/CD reader port for coupling to a DVD/CD reader, a microphone input to receive audio signals from an external microphone, an MPEG decoder coupled to the DVD/CD reader port and the microphone input, the MPEG decoder having first and second output terminals, a processor coupled to the MPEG decoder, the processor to control the MPEG decoder, and a configurable amplifier coupled to the first and second output terminals, wherein a first audio signal originating from the first output terminal is selectively amplified by the configurable amplifier circuit in accordance with a second signal originating from the second output terminal.

Abstract: System and method for muting an output terminal of an electronic device. In one embodiment, the process for can include receiving one or more signals received by the controller over the first terminal, detecting a mute control signal from the controller and controlling the state of a switch coupled to the output terminal to ground the output terminal based on detecting the mute control signal.

Abstract: A system and methods for voice controlled operation of a media player are provided. In one embodiment, a method includes detecting user positioning of a microphone power switch to an off position, detecting user positioning of the microphone power switch to an on position within a predetermined period of time and entering a voice recognition mode, by the media player, based on the user positioning of the microphone power switch to the on position within the predetermined period of time. The method may further include detecting one or more output signals of the microphone, detecting a voice command based on the one or more output signals of the microphone, and controlling operation of the media player based on the voice command, wherein the media player outputs a graphical display associated with the voice command.

Abstract: System and method for analyzing operation of a device under test (DUT). In one embodiment, a reference component associated with a reference device may be received. The reference device may be in communication with the DUT and a component associated with the DUT can be exchanged with the reference component. A test may be performed on the DUT, wherein a result of the test may correspond to a source of a fault associated with the DUT. An indication of the source of the fault may be provided based on the test result.

Abstract: A configurable amplifier circuit for a karaoke player is described. In one embodiment, a karaoke player includes: a DVD/CD reader port for coupling to a DVD/CD reader, a microphone input to receive audio signals from an external microphone, an MPEG decoder coupled to the DVD/CD reader port and the microphone input, the MPEG decoder having first and second output terminals, a processor coupled to the MPEG decoder, the processor to control the MPEG decoder, and a configurable amplifier coupled to the first and second output terminals, wherein a first audio signal originating from the first output terminal is selectively amplified by the configurable amplifier circuit in accordance with a second signal originating from the second output terminal.

Abstract: An electronic system includes a signal processor, a control signal generator, and an I/O interface. The signal processor has a first output signal and the first output signal is characterized by at least a first property and a second property. The control signal generator is configured to produce first and second control signals in accordance with the first and second properties of the first output signal, respectively. The I/O interface is configured to couple at least the first and second control signals to an output device. In some embodiments, the first output signal is a pulse width modulated signal having a software-specified pulse width and a software-specified repeat frequency. In some embodiments, the first property of the first output signal is the signal's duty cycle and the second property is the signal's frequency.

Abstract: System and method for muting an output terminal of an electronic device. In one embodiment, the process for can include receiving one or more signals received by the controller over the first terminal, detecting a mute control signal from the controller and controlling the state of a switch coupled to the output terminal to ground the output terminal based on detecting the mute control signal.

Abstract: System and method for analyzing operation of a device under test (DUT). In one embodiment, a reference component associated with a reference device may be received. The reference device may be in communication with the DUT and a component associated with the DUT can be exchanged with the reference component. A test may be performed on the DUT, wherein a result of the test may correspond to a source of a fault associated with the DUT. An indication of the source of the fault may be provided based on the test result.

Abstract: System and method for operating a motor using a single general purpose input/output (GPIO) pin of a controller. In one embodiment, a control circuit may include a first terminal coupled to a GPIO pin of a controller. The first terminal can be configured to receive, and output, at least one or more signals. The control circuit may include a plurality of elements coupled to the first terminal, and motor driver circuit output terminal, such that the control circuit may be configured to output one more control signals to the motor driver circuit output terminal for control the motor driver circuit. Motor driver control signals may be based, at least in part, on one or more signals received from the first terminal.

Abstract: A method of having multiple devices share a circuit's input/output (I/O) terminals includes applying first and second input signals to first and second I/O terminals to generate first and second output signals at the second and first I/O terminals, respectively. The first and second I/O terminals are coupled to first, second, and third devices via a plurality of signal paths. The method determines which, if any, of the first, second, and third devices is activated based on the first and second output signals. In some embodiments, the three devices correspond to three key switches of a keyboard through which a user can enter operation instructions. In some other embodiments, the three devices correspond to three signal receivers, which are controlled by a local or remote signal source that transmits activation signals in a wired or wireless manner.

Abstract: A method of having multiple devices share a circuit's input/output (I/O) terminals includes applying first and second input signals to first and second I/O terminals to generate first and second output signals at the second and first I/O terminals, respectively. The first and second I/O terminals are coupled to first, second, and third devices via a plurality of signal paths. The method determines which, if any, of the first, second, and third devices is activated based on the first and second output signals. In some embodiments, the three devices correspond to three key switches of a keyboard through which a user can enter operation instructions. In some other embodiments, the three devices correspond to three signal receivers, which are controlled by a local or remote signal source that transmits activation signals in a wired or wireless manner.