A signal processing system includes a signal processing device including a processor and a memory device storing first information and a signal transmitting device including a memory device storing second information. The processor reads the memory devices to obtain the first information and the second information, determines a threshold date according to a first date indicated by the first information and a margin, and determines whether a second date indicated by the second information is earlier than the threshold date. When the second date is earlier than the threshold date, the processor controls the signal processing device to operate in a limited mode. In the limited mode, the signal processing device does not output any signal to the signal transmitting device or ignores any signal from the signal transmitting device, or the signal processing device only outputs a limited signal to the signal transmitting device.

An isolated switching power converter having a primary-side and secondary-side in signal communication with an input and an output is disclosed. The isolated switching power converter comprises a transformer, primary-side switch, secondary-side switch, primary-side controller, and secondary-side controller. The transformer includes a primary-winding and a secondary-winding in signal communication with the input and output. The primary-side switch is in signal communication with the primary-winding and the secondary-side switch is in signal communication with the secondary-winding. The primary-side controller is on the primary-side and the secondary-side controller is on the secondary-side. The primary-side controller is configured to output a control signal for operating the primary-side switch and the secondary-side controller configured to monitor a voltage across the secondary-side switch, output a control signal for switching the secondary-side switch, and turn-off the secondary-side switch at an off-time of the primary-side switch to transmit a data signal to the primary-side controller.

An isolated switching power converter having a primary-side and secondary-side in signal communication with an input and an output is disclosed. The isolated switching power converter comprises a transformer, primary-side switch, secondary-side switch, primary-side controller, and secondary-side controller. The transformer includes a primary-winding and a secondary-winding in signal communication with the input and output. The primary-side switch is in signal communication with the primary-winding and the secondary-side switch is in signal communication with the secondary-winding. The primary-side controller is on the primary-side and the secondary-side controller is on the secondary-side. The primary-side controller is configured to output a control signal for operating the primary-side switch and the secondary-side controller configured to monitor a voltage across the secondary-side switch, output a control signal for switching the secondary-side switch, and turn-off the secondary-side switch at an off-time of the primary-side switch to transmit a data signal to the primary-side controller.

A multiplexing circuit, an interface circuit system, and a mobile terminal, to resolve a problem that a charging current significantly decreases when a headset is used during charging of the mobile terminal. In a multiplexing circuit, a first switch circuit transmits a right-channel audio signal on a right-channel transmission end to a first external transmission end; a second switch circuit transmits a left-channel audio signal on a left-channel transmission end to a second external transmission end; when a second on voltage is received, but a first on voltage is not received, an isolation circuit transmits the second on voltage to a third switch circuit; and when the first on voltage and the second on voltage are received, the isolation circuit pulls down the third switch circuit, and isolates a ground end from a second on voltage end.

An information processing apparatus capable of preventing erroneous connection at a time of connection using cables without deteriorating versatility. The information processing apparatus is communicable with an external device via two cables. A first connector is connected to one of the two cables and has terminals, which include a first terminal that is arranged at a first position and receives a predetermined signal output according to start-up of the external device. A second connector of a same shape as the first connector is connected to another of the two cables and that has terminals, which are identical to the terminals of the first connector in number and arrangement and include a second terminal that is not used to output a signal and is arranged at a position corresponding to the first terminal. A controller notifies of an error through a notification device when the second terminal receives the predetermined signal.

A first completion system with electrical isolation, electronics, and a first side of a coupler is installed in a borehole drilled in a geological formation. A second completion system is installed in the borehole after installation of the first completion system. The second completion system has a second side of the coupler aligned with the first side of the coupler and an umbilical which carries power from a surface of the geological formation to the second side of the coupler. Power is sent from the second side of the coupler to the first side of the coupler, from the first side of the coupler to a first side of the electrical isolation, and from the first side of the electrical isolation to a second side of the electrical isolation via an isolation barrier. The power at the second side of the electrical isolation is provided to the electronics.

A method for electrification of a field chopper comprising the steps of: providing a cable drum and a winding drive on the field chopper, the cable drum and winding drive allowing at least one of the winding and unwinding of an energy supply line about the cable drum; providing a cable arm on the field chopper, the cable arm configured to adjust in at least one of an orientation and extension length to provide guided winding or unwinding of the energy supply line along a field surface; providing a pivotable ejection chute on the field chopper, the ejection chute extending beyond the cable arm and configured to transfer a chopped harvested material onto a transport vehicle driving alongside the field chopper; unwinding the energy supply line while along a first processing strip from the cable drum using the winding drive and cable arm; and winding the energy supply while along a second processing strip about the cable drum using the winding drive and the cable.

A half duplex amplifier for a cable network.

A tensioning device for a wired energy or data transmission path includes a winding drum, a cable guide wire stored on the winding drum, and a spring accumulator. The winding drum is rotatable by an electrical drive for winding and unwinding the cable guide wire. The spring accumulator is operably exerting a resilient tensile force on a wire portion unreeled from the winding drum.

A tensioning device for a wired energy or data transmission path includes a winding drum, a cable guide wire stored on the winding drum, and a spring accumulator. The winding drum is rotatable by an electrical drive for winding and unwinding the cable guide wire. The spring accumulator is operably exerting a resilient tensile force on a wire portion unreeled from the winding drum.