Yaoyao
Yaoyao Gu, Sunnyvale, CA US
Patent application number | Description | Published |
---|---|---|
20150319766 | FREQUENCY AGILITY FOR AN ISM BAND HOME AREA NETWORK - Due to interference that typically occurs in the ISM band, it may be necessary for one or more network devices to switch to an alternative channel. A list of one or more alternate network channels may be generated by a coordinating/gateway device based on the energy level and a distance from a primary network channel. The alternate network channel list may be distributed to neighbor devices and, in the event of interference, link loss, and/or a channel switch notification, the neighbor devices may automatically switch to the first alternate network channel in the list. | 11-05-2015 |
Yaoyao Jia, Chengdu, Sichuan CN
Patent application number | Description | Published |
---|---|---|
20150318859 | CHARGE PUMP CIRCUIT USED FOR CHARGE PUMP PHASE-LOCKED LOOP - A charge pump circuit used for a charge pump phase-locked loop that includes a charging and discharging unit, two complementary circuit units, two operational amplifier units, an inverter unit, and a current mirror unit. The charge pump circuit resolves the matching problem of charging and discharging currents and the charge sharing problem in existing charge pump circuits. Both complementary circuit units positively and reversely compensate the charging and discharging unit to keep the charging and discharging currents of capacitors constant. Thus, the problem of the change of charging and discharging currents is resolved, the voltage linear variation of the charge pump capacitors is achieved, and the charging and discharging of the capacitors can be accurately controlled. The charge pump circuit is simple in structure, easy to integrate, high in the matching precision of the charging and discharging current sources, and suitable for low voltage and low power consumption applications. | 11-05-2015 |
Yaoyao Wei, Novi, MI US
Patent application number | Description | Published |
---|---|---|
20140038775 | METHOD AND APPARATUS TO OPERATE A MULTI-MODE POWERTRAIN SYSTEM TO ACHIEVE LIGHT-OFF OF A CATALYTIC DEVICE - A multi-mode powertrain system employing a power-split configuration to transfer torque to a driveline includes an internal combustion engine fluidly coupled to an exhaust aftertreatment system having a catalytic device. A method for controlling the multi-mode powertrain system includes identifying permitted transition paths between a plurality of engine states. The plurality of engine states includes a default state, a pre-light-off state, a light-off state, and a post-light-off state. A preferred one of the plurality of engine states is selected in response to an output torque request and an operating temperature of the catalytic device. Engine operation is transitioned to the preferred one of the plurality of engine states via the permitted transition paths, and the engine is operated in the preferred one of the plurality of engine states. | 02-06-2014 |
20140046522 | METHOD AND APPARATUS FOR STATE SELECTION STABILIZATION FOR ELECTRIFIED POWERTRAINS - A method for stabilizing selection between a plurality of operating range states of an electro-mechanical multi-mode transmission configured to transfer torque among an engine, at least one electric machine, and a driveline includes requesting operation of the transmission in a preferred operating range state while a shift from a first operating range state to a second operating range state is in progress prior to achieving the second operating range state. Powertrain information is monitored and compared to a driver perception threshold only if a change of mind condition is detected. The shift to the second operating range state is avoided and a shift to the preferred operating range state is commanded if the powertrain information does not violate the driver perception threshold. | 02-13-2014 |