Abstract: Techniques for charging an electronic device using a Universal Serial Bus (USB) cable and connector are provided. In an example, an apparatus can include a charger, a USB cable coupled to the charger at a first end of the cable, a paddle card for a USB connector coupled to the cable at a second end of the cable, the paddle card including differential data contacts, and wherein the differential data contacts of the paddle card are shorted together at the paddle card.

Abstract: Systems and devices configured by an algorithm to prevent or limit a speaker over-excursion are disclosed. The disclosed algorithm is computationally efficient because it exploits a relationship between an audio signal and a speaker's excursion that exists at low-frequencies, below a self-resonance of a speaker. The disclosed algorithm combines the low-frequency excursion protection with a high-frequency, transient excursion protection. The combined approach allows the transient excursion protection to use a shorter delay than otherwise possible. The shorter delay allows for a compressor to apply attenuation to a transient audio signal before a momentum of the speaker, caused by the transient audio signal, grows too large to be controlled.

Abstract: Systems and devices configured by an algorithm to prevent or limit a speaker over-excursion are disclosed. The disclosed algorithm is computationally efficient because it exploits a relationship between an audio signal and a speaker's excursion that exists at low-frequencies, below a self-resonance of a speaker. The disclosed algorithm combines the low-frequency excursion protection with a high-frequency, transient excursion protection. The combined approach allows the transient excursion protection to use a shorter delay than otherwise possible. The shorter delay allows for a compressor to apply attenuation to a transient audio signal before a momentum of the speaker, caused by the transient audio signal, grows too large to be controlled.

Abstract: Systems and devices configured by an algorithm to prevent or limit a speaker over-excursion are disclosed. The disclosed algorithm is computationally efficient because it exploits a relationship between an audio signal and a speaker's excursion that exists at low-frequencies, below a self-resonance of a speaker. The disclosed algorithm combines the low-frequency excursion protection with a high-frequency, transient excursion protection. The combined approach allows the transient excursion protection to use a shorter delay than otherwise possible. The shorter delay allows for a compressor to apply attenuation to a transient audio signal before a momentum of the speaker, caused by the transient audio signal, grows too large to be controlled.

Abstract: This document discusses, among other things, apparatus, systems, and methods to prevent a voltage of a charging battery from exceeding a voltage threshold, including receiving charging information from a battery and controlling an output current of a travel adapter, including adjusting the received battery current information using a load current to prevent the voltage of the battery from exceeding a voltage threshold, and providing output current limit information to the travel adapter using the adjusted battery current information.

Abstract: This document discusses, among other things, apparatus, systems, and methods to prevent a voltage of a charging battery from exceeding a voltage threshold, including receiving charging information from a battery and controlling an output current of a travel adapter, including adjusting the received battery current information using a load current to prevent the voltage of the battery from exceeding a voltage threshold, and providing output current limit information to the travel adapter using the adjusted battery current information.

Abstract: In accordance with an embodiment, a bypass charging circuit includes a pair of transistors having current carrying terminals commonly connected to form a node. An input of a comparator is coupled to the node through a switch and to a resistor. Another input terminal of the comparator is coupled for receiving a reference voltage. Optionally, a transistor may be connected to the bypass charging circuit. In accordance with another embodiment a method is provided in which bypass charging transistors are coupled to first input of a comparator in response to closing a switch. A voltage is generated at the first input of the comparator in response to closing the switch and the voltage is compared with a reference voltage. In response to the comparison, a status indicator signal is generated to indicate the presence of a low-impedance failure in one or both of the bypass charging transistors.

Abstract: A power converter includes a load detector a processor and a power control block. The load detector is configured to determine a change in a load value of an electronic device coupled to the power converter without receiving a message communicated from the electronic device indicating the change in the load value, and determine if the change in the load value exceeds a threshold value. The processor, in response to determining the change in the load value exceeds the threshold value, is configured to signal the power converter to reduce a voltage. The power control block is configured to reduce the voltage based on the signal.

Abstract: In accordance with an embodiment, a bypass charging circuit includes a pair of transistors having current carrying terminals commonly connected to form a node. An input of a comparator is coupled to the node through a switch and to a resistor. Another input terminal of the comparator is coupled for receiving a reference voltage. Optionally, a transistor may be connected to the bypass charging circuit. In accordance with another embodiment a method is provided in which bypass charging transistors are coupled to first input of a comparator in response to closing a switch. A voltage is generated at the first input of the comparator in response to closing the switch and the voltage is compared with a reference voltage. In response to the comparison, a status indicator signal is generated to indicate the presence of a low-impedance failure in one or both of the bypass charging transistors.

Abstract: This document discusses, among other things, apparatus, systems, and methods to prevent a voltage of a charging battery from exceeding a voltage threshold, including receiving charging information from a battery and controlling an output current of a travel adapter, including adjusting the received battery current information using a load current to prevent the voltage of the battery from exceeding a voltage threshold, and providing output current limit information to the travel adapter using the adjusted battery current information.

Abstract: Techniques for charging an electronic device using a Universal Serial Bus (USB) cable and connector are provided. In an example, an apparatus can include a charger, a USB cable coupled to the charger at a first end of the cable, a paddle card for a USB connector coupled to the cable at a second end of the cable, the paddle card including differential data contacts, and wherein the differential data contacts of the paddle card are shorted together at the paddle card.

Abstract: A switching system. The switching system includes a first switch having a primary receive port and a secondary receive port. The switching system includes a second switch connected to the first switch. The second switch has n receive ports, where n is greater than or equal to 2 and is an integer. The second switch has m transmit ports, where m is greater than or equal to 2 and is an integer. The transmit ports are decoupled from the receive ports. The second switch has a connecting mechanism that includes a multicast mechanism which sends data out a primary transmit port of the m transmit ports to the primary receive port of the first switch to define a primary path, and out a secondary transmit port of the m transmit ports to a secondary receive port of the first switch to define a redundant path to the primary path so that if there is a failure of the primary path to provide the data to the first switch, the data is received by the first switch through the redundant path.