Disclosed herein is a USB port controller on a sink side. The USB port controller is compatible with a USB Type-C. A sink equipped with the USB port controller includes a power supply terminal, a capacitor connected to the power supply terminal, and a discharge resistance and a discharge switch connected in series with each other between the power supply terminal and a ground line. The USB port controller includes a discharge control unit configured to turn on the discharge switch when no voltage is supplied from a source to the power supply terminal.

A system can include a display assembly that includes a display, a display side, a back side and a frame, where the back side includes a serial bus socket; and a camera assembly that includes a camera head unit coupled to an end of an arm, where an opposing end of the arm includes a serial bus connector receivable by the serial bus socket of the back side of the display assembly.

A power distribution system includes a plurality of power distribution modules connected to at least one power supply and configured to receive power therefrom. A power distribution bus connects the power distribution modules of the plurality of power distribution modules in parallel. The plurality of power distribution modules executes a distributed system policy management protocol over the power distribution bus to control a supply of available power from the at least one power supply to loads connected to USB charging ports of the power distribution modules.

There are provided systems and methods for a physical stand for multiple device orientations and peripheral card reader. A device stand may include a dock that allows for placement and securing of a computing device within the device case, such as through a locking or connecting mechanism. The device dock further includes a peripheral component, such as a physical card reader, that allows for reading and entry of card data into the computing device for use with an electronic transaction processing application on the computing device. This allows the computing device to process transactions electronic with an online service provider. Further, the device stand includes a hinge or joint that allows for rotating and inverting of the computing device over a curved extension from a base of the device stand, which allows the computing device to be viewed in multiple directions and orientations.

A printing apparatus includes: a printing section including a plurality of printing elements that performs printing on a medium; a power supply circuit supplying power to the printing section; a control circuit controlling the printing section and the power supply circuit; and a USB-Type-C interface configured to couple an external device and including a data transmission/reception terminal, a power input/output terminal, and a state identification terminal. When the state identification terminal detects that the external device that receives the power via the power input/output terminal is coupled, and the printing section performs printing, an amount of power supplied to the external device is large in a case in which a drive rate of the plurality of printing elements is low as compared with a case in which the drive rate of the plurality of printing elements is high.

In one or more embodiments, a system includes a plurality of network devices comprising a plurality of ports, a power bus connecting the network devices, wherein power is shared between the network devices over the power bus, and a controller for identifying available power and allocating power to the ports. The ports include a plurality of PSE (Power Sourcing Equipment) PoE (Power over Ethernet) ports each operable to transmit power to a device connected to one of the PSE PoE ports, a plurality of PD (Powered Device) PoE ports each operable to receive power from a device connected to one of the PD PoE ports, and a plurality of bi-directional PoE ports each configurable to operate as a PSE PoE port to transmit power to a device connected to one of the bi-directional PoE ports or as a PD PoE port to receive power from the connected device.

One embodiment is directed a powered device that comprises a connector to connect a multi-conductor cable to the powered device and device circuits partitioned into a first partition and a second partition. The powered device is configured to receive power from a first cable circuit and a second cable circuit provided over the multi-conductor cable. The powered device is configured to separately power the first partition using power received from the first cable circuit and power the second partition using power received from the second cable circuit and to power isolate the first cable circuit from the second cable circuit. The powered device further comprises at least one isolation device coupled to the first partition and the second partition and configured to enable information to be communicated between the first partition and the second partition. Other embodiments are disclosed.

A computer-implemented method includes monitoring, by a power monitor on a computer device, for a peripheral device connection. The peripheral device connection connecting a peripheral device to an input/output port of the computer device. The input/output port is configured to provide power from a power supply of the computer device to the peripheral device. In response to the monitoring for the peripheral device connection identifying the peripheral device connection, the method includes determining, by the power monitor, a device type and a negotiated power of the peripheral device as connected. The power monitor determines whether the negotiated power of the peripheral device as connected matches expected power information. In response to determining the negotiated power of the peripheral device does not match the expected power information, the power monitor takes action on the computer device.

A system is provided that includes a power transmitter configured to provide power to a current loop, a power receiver configured to receive the power from the current loop. The power receiver is configured to, on a periodic basis, disconnect from the current loop to stop pulling power from the current loop for a period of time to enable a safety check to be performed by the power transmitter. The power transmitter is configured to: monitor current on the current loop; determine whether a current level on the current loop passes the safety check within a predetermined time interval since a determination that the current level was not within a safe range; and control connectivity of the power to the current loop depending on whether the safety check has or has not passed within the predetermined time interval.

The present disclosure relates to an interface comprising: a terminal for delivering a DC voltage; a comparator for delivering a first signal representative of a comparison of the DC voltage with a high threshold; a comparator for delivering a second signal representative of a comparison of the DC voltage with a low threshold; and a circuit configured to: deliver successive pairs of values of high and low thresholds for a time period after the DC voltage crosses a first value of the low threshold; modify successive pairs of values of the thresholds based on the first and second signals to determine values of thresholds surrounding the DC voltage; and determining a current value of the DC voltage based on the values of thresholds surrounding the DC voltage.