Abstract: An electronic device incorporating a liquid crystal display (LCD) screen comprises at least one at least one radio frequency (RF) antenna mounted behind a LCD panel of the LCD screen, and a processor. The RF antenna includes a directional transmit RF antenna that transmits an RF signal through the LCD panel to impinge on a human user, and includes a receive antenna configured to receive a RF signal reflected from tissue of the human user. The processor processes the reflected RF signal to generate a processed signal indicative of presence or absence of the human user, and responsive to the processed signal, controls an operating mode of the electronic device and/or enables control of the device by the human user.

Abstract: A system and method to compensate for transit-induced vibration when detecting heart rate using radar sensors is provided. Embodiments provide a radio frequency RF sensor for heart rate detection when a subject is in transit (e.g., in a vehicle and/or subject to human-induced motion), where the RF sensor is designed to cancel vibration noise while preserving a cardiac signal in a radar response so that a heart rate, respiratory rate, and related physiological parameters of a subject under test can be extracted. In some examples, a heart rate variability (HRV) and/or state of the subject under test can be derived from these physiological parameters as well. The RF sensor with vibration cancellation can be installed in multiple locations in a vehicle, including a car seat, a steering wheel, a roof of the vehicle, a visor, or a rearview mirror; alternatively, the components may be held or worn by a subject, or arranged proximate to a subject.

Abstract: An electronic device incorporating a liquid crystal display (LCD) screen comprises at least one at least one radio frequency (RF) antenna mounted behind a LCD panel of the LCD screen, and a processor. The RF antenna includes a directional transmit RF antenna that transmits an RF signal through the LCD panel to impinge on a human user, and includes a receive antenna configured to receive a RF signal reflected from tissue of the human user. The processor processes the reflected RF signal to generate a processed signal indicative of presence or absence of the human user, and responsive to the processed signal, controls an operating mode of the electronic device and/or enables control of the device by the human user.

Abstract: A system and method to compensate for transit-induced vibration when detecting heart rate using radar sensors is provided. Embodiments provide a radio frequency RF sensor for heart rate detection when a subject is in transit (e.g., in a vehicle and/or subject to human-induced motion), where the RF sensor is designed to cancel vibration noise while preserving a cardiac signal in a radar response so that a heart rate, respiratory rate, and related physiological parameters of a subject under test can be extracted. In some examples, a heart rate variability (HRV) and/or state of the subject under test can be derived from these physiological parameters as well. The RF sensor with vibration cancellation can be installed in multiple locations in a vehicle, including a car seat, a steering wheel, a roof of the vehicle, a visor, or a rearview mirror; alternatively, the components may be held or worn by a subject, or arranged proximate to a subject.

Abstract: Systems and methods for remotely sensing movement of a mammalian subject utilize a radio frequency (RF) transmitter configured to impinge a RF signal on tissue of a mammalian subject, a RF receiver configured to receive a reflected RF signal, a processor configured to separately identify presence of respiratory and non-respiratory motion of the mammalian subject, and a memory configured to store processes signal values generated by or derived from the processor, wherein the processor is configured to compare one or more processed signals against one or more stored processed signal values, and detect a health state or health condition of the mammalian subject. Sleep apnea and respiratory events may be detected. In one embodiment, motion of a human infant may be mapped over time, and motion trends may be used to assess proper development of the infant.

Abstract: Embodiments of the present invention provide a power source equipment (PSE) network device operable to provide a network signal that may include both power and data. This PSE network device includes a network connector and an integrated circuit. The network connector physically couples the PSE network device to the network. The integrated circuit further includes a power feed circuit. This power feed circuit is operable to combine and pass the received data signals and power signal as a single network signal. A PSE controller electrically couples to the integrated circuit but is not necessarily part of the integrated circuit. The PSE controller is operable to govern the production and distribution of the power portion of the network signal.

Abstract: In a network device, a connector module comprises a network connector coupled to the connector module in a configuration that transfers power and communication signals and an application connector that comprises serial media independent interface (SMII) pins and power pins. A Power-over-Ethernet (PoE) circuit is coupled between the network connector and the application connector.

Abstract: A network device comprises an Ethernet physical layer (PHY) comprising an isolation, protection, and electromagnetic interference suppression barrier operative for isolated power and data transfer.

Abstract: An open collector/open drain interface, such as I2C interface between two or more integrated circuit devices, employs isolation techniques to provide electrical isolation of a digital signal for transmission of the signal between the devices. Uni-directional isolator channels are utilized to transmit bidirectional digital signals, and a selection of an isolator channel operating in an intended transmission direction is performed by direction control logic. Edge detection logic is utilized to determine changes in edges of a digital signal, thus determining a transmitting device and a transmission direction. The direction state is held in a direction state register. This state is held until the appropriate edge is detected on the transmit side, returning the isolator to the idle state. In the idle state neither side of the isolator is in a driven state. During transmission, the digital signal is transmitted through an isolator channel and sent to a receiving device.

Abstract: A signal isolator comprises an isolation barrier, a transmitter, a differentiator, and a recovery circuit. The transmitter is coupled to a first side of the isolation barrier and is configured to receive and convert an information signal to a differential signal that encodes information in the information signal in a single transition edge. The differentiator is coupled to a second side that is isolated from the first side of the isolation harrier and differentiates the differential signal. The recovery circuit is coupled to the differentiator and operates to recover an output information signal based on the information in the single transition edge.

Abstract: Embodiments disclosed herein describe a network interface device including a first powered device controller coupled to first and second power supply lines. A second powered device controller coupled to third and fourth input power supply lines. A dc-dc converter coupled to receive a single signal representing a sum of power signals output by the first and second powered device controllers.

Abstract: An interface between USB devices employs isolation techniques to provide electrical isolation of a USB signal for transmission of the USB signal between the devices. Unidirectional isolator channels are utilized to transmit the USB signals, and a selection of an isolator channel operating in an intended direction is performed by either direction control logic or a USB hub function. Logic may be employed to detect a device attempting to initiate a USB signal. The logic operates to enable a transmitter on a receiving side and isolate the USB signal through an isolator channel operating in a transmission direction.

Abstract: An interface between USB devices employs isolation techniques to provide electrical isolation of a USB signal for transmission of the USB signal between the devices. Unidirectional isolator channels are utilized to transmit the USB signals, and a selection of an isolator channel operating in an intended direction is performed by either direction control logic or a USB hub function. Logic may be employed to detect a device attempting to initiate a USB signal. The logic operates to enable a transmitter on a receiving side and isolate the USB signal through an isolator channel operating in a transmission direction.

Abstract: A power converter comprises a direct current (DC)-DC converter configured to receive an input voltage in a primary domain, a transformer coupled to and driven by the DC-DC converter and supplying an output voltage in a secondary domain, and a transmission path configured to pass a digital feedback signal through an isolation barrier from the secondary domain to the primary domain.

Abstract: A powered device on a network is isolated by communicating operating power and data to a powered device from a network line, referencing the network line to a line reference, and referencing the powered device to a device reference that can be different from the line reference. The powered device is isolated from the network line with an isolation boundary positioned between distributed power and the powered device at a digital port coupled to the powered device.

Abstract: A semiconductor device comprises an integrated circuit formed on a substrate with a signal interface and at least one isolator capacitor. The integrated circuit comprises a plurality of interleaved inter-metal dielectric layers and interlayer dielectrics formed on the substrate, a thick passivation layer formed on the plurality of the interleaved inter-metal dielectric layers and interlayer dielectrics, and a thick metal layer formed on the thick passivation layer. The thick passivation layer has a thickness selected to be greater than the isolation thickness whereby testing for defects is eliminated. The one or more isolator capacitors comprise the thick metal layer and a metal layer in the plurality of interleaved inter-metal dielectric layers and interlayer dielectrics separated by the thick passivation layer as an insulator.

Abstract: In a network device, a connector module comprises a network connector coupled to the connector module in a configuration that transfers power and communication signals and an application connector that comprises serial media independent interface (SMII) pins and power pins. A Power-over-Ethernet (PoE) circuit is coupled between the network connector and the application connector.

Abstract: A semiconductor device comprises an integrated circuit formed on a substrate with a signal interface and at least one isolator capacitor. The integrated circuit comprises a plurality of interleaved inter-metal dielectric layers and interlayer dielectrics formed on the substrate, a thick passivation layer formed on the plurality of the interleaved inter-metal dielectric layers and interlayer dielectrics, and a thick metal layer formed on the thick passivation layer. The thick passivation layer has a thickness selected to be greater than the isolation thickness whereby testing for defects is eliminated. The one or more isolator capacitors comprise the thick metal layer and a metal layer in the plurality of interleaved inter-metal dielectric layers and interlayer dielectrics separated by the thick passivation layer as an insulator.

Abstract: A network system comprises dynamic power management controllers respectively configured for usage in a Power Sourcing Equipment (PSE) and a Powered Device (PD) coupled by a network cable in a configuration that transfers power and communication signals from the PSE to the PD. The dynamic power management controllers are configured to communicate power management information over the network cable at a Transmission Control Protocol/Internet Protocol (TCP/IP) layer and/or a Media Access Control (MAC) layer.

Abstract: An active clamp device electrically couples first and second nodes in respective first and second supply domains referenced to ground potentials that can be different. The active clamp device comprises first and second active devices controlled by signals respectively referenced to the first and second supply domains that create a short-circuit or low impedance connection between the first and second nodes in normal operation and drive impedance between the first and second nodes high in response to a transient event.