Nxp Usa, Inc.

Nxp B.v.

Lenovo (singapore) Pte. Ltd.

Merck Patent Gmbh

East China University of Science and Technology

Kunshan Tianyang Hot Melt Adhesive Co., Ltd

Shanghai Tianyang Hot Melt Adhesive Co., Ltd

Ping Zhao

Yong Wang

Fei Chen

Jing Wang

Dechang Wang

CheKim Chhuor

Yu Yu

Li Wang

Zhelong Li

Zuoxiang Zeng

Wanyu Zhu

Juan Liu

Liying Jin

Weilan Xue

Xu Gao

Chang-Suk Choi

A liquid-crystal (LC) media having a negative dielectric anisotropy containing a compound of formula I and the use of the LC media for optical, electro-optical and electronic purposes, in particular in energy-efficient LC displays, especially in IPS, FFS, VA or PS-VA displays.

Liquid-crystal medium

A method for detecting objects in a charging area of a wireless charging transmitter includes providing a bridge circuit that generates a ping signal, and providing the ping signal to a transmitter terminal. The method further includes monitoring at least one of a current of a power supply connected to the bridge circuit, and a current at the transmitter terminal to determine if an eligible object is in the charging area. The ping signal has parameters including frequency, duty cycle, and phase shift angle, where at least one of these parameters varies with time.

Method and apparatus for detecting objects in charging area of wireless charging transmitter

In a wireless charging system, a power-transmitting node (TX), has a processor, a memory, a power transmitter for transmitting power wirelessly to a power-receiving node (RX), and a signal receiver for receiving signals from the RX. After the processor detects the presence of a foreign object (FO) during a power-transfer session, the processor places the TX in a protection state. The processor detects whether the FO has been removed using quality factor (QF) values for the TX that the processor measures before and after detecting the presence of the FO, and without requiring any QF values calibrated off-line. The QF values include a QF value measured before the FO is present, a QF value measured just after the TX enters the protection state, and a current QF value that is repeatedly updated as long as the TX remains in the protection state.

Foreign object detection circuit for wireless charger

In a wireless charging system, a power-transmitting node (TX) has a transmitter for transmitting power wirelessly to a power-receiving node (RX), and a signal receiver for receiving signals from the RX. During a power-transfer session, the TX accumulates data corresponding to its transmitted power level, detects an end of a received power (RP) packet from the RX, and then identifies a subset of the accumulated data. The TX calculates its transmitted power level using the subset of the accumulated data. The TX extracts a received power level of the RX from the received RP packet and compares its calculated transmitted power level with the RX's received power level to determine a presence of a foreign object. Accuracy of FO detection when packets from the RX are not properly received by the TX is improved.

Wireless charging system with power level calculation circuit for foreign object detection

A method for updating firmware in a wireless charger is implemented when the wireless charger charges a chargeable device. A wireless link is established between the charger and the chargeable device for transferring energy from the charger to the chargeable device. The wireless link also is used to transfer a new version of a firmware program running on the charger, from the chargeable device to the charger. The wireless charger can detect interruption in reception of the new version of the firmware program and identify a breakpoint where the data transfer was interrupted. The wireless charger can resume reception of the firmware program from the breakpoint when the wireless link is re-established. The firmware update can be initiated by an app on the chargeable device.

System and method for updating firmware in wireless charger

A method of controlling a computing device includes detecting a user input request to disengage a drive component from a computing device, the computing device comprising a multiple-drive storage system having a plurality of drive components forming a single logical unit, and determining whether or not disengaging the drive component would cause failure of the multiple-drive storage system. The method includes disallowing disengagement of the drive component from the computing device in response to determining that disengaging the drive component would cause failure of the multiple-drive storage system, and allowing disengagement of the drive component from the computing device in response to determining that disengaging the drive component would not cause failure of the multiple-drive storage system.

Disallowing disengagement of a drive component

A wireless charging system has a transmitter and a receiver. The transmitter has (i) a TX coil that wirelessly transfers power to the receiver and (ii) TX circuitry that powers the TX coil and detects receiver removal by comparing TX input power and TX power loss. The TX circuitry can determine (1) TX input power as the product of sampled TX input current and voltage and (2) TX power loss using a mapping based on sampled TX coil current. When the receiver is present, the difference between TX input power and TX power loss has a first value and when the receiver is removed, the difference has a second, lesser value. The transmitter detects removal of the receiver by determining when the difference decreases below a specified threshold level. By frequently generating and analyzing the difference, the transmitter can quickly detect receiver removal and safely power down the TX coil.

Receiver removal detection in wireless charging systems

A method of preparing a polyester/polyolefin hot-melt adhesive for use in a solar cell bus bar is disclosed, in which 2,6-naphthalenedicarboxylic acid and ethylene glycol are first sequentially subjected in a predetermined ratio to esterification and polycondensation in the presence of a certain amount of a titanium-based catalyst to result in a polyethylene naphthalate (PNT) with a weight-average molecular weight of 16,000&#x2dc;20,000. The PNT is then melt-blended with a low-density polyethylene (LDPE) in the presence of a compatibilizer to produce the hot-melt adhesive that can be shaped into films having a high light transmittance, good mechanical properties, high heat and yellowing resistance and thus particularly suitable for use in solar cell bus bars.

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Shanghai, China

Ping Zhao