Abstract: A method of optimally generating a power failure warning (PFW) signal has been disclosed here in such a manner that adjusts timing of PFW signal generation according to load conditions in case of input AC voltage loss. A PFW voltage threshold value can be set at a lower value under light load conditions and at a higher value under heavy load conditions. PFW signal generation can also be triggered by a timing mechanism that is set when a bus voltage drops to a voltage threshold value. A countdown time of the timing mechanism is set according to a determined bus voltage drop rate. In this manner, issuance of the PFW signal is delayed for lighter load conditions and the power supply unit is capable of extending normal operation under lighter load conditions before the PFW signal is issued.

Abstract: A power transmission pad is configured to provide wireless power transmission to a receiving device where the receiving device is orientation-free relative to the pad. The pad functions as a transmitter and is magnetically “hot”, meaning the pad generates a magnetic field when powered on. The receiving device, such as a cell phone, tablet, or other portable electronic device, is placed within the magnetic field for the purpose of charging the device battery. In contrast to conventional wireless battery charging systems, there are no restrictions on the orientation of the receiving device relative to the pad. The power transmission pad includes a sweep frequency generator for generating power transmissions across a frequency spectrum. An optimal frequency is determined for maximum energy transfer to the receiving device, and the sweep frequency generator is locked to the determined optimal frequency.

Abstract: A power transmission pad is configured to provide wireless power transmission to multiple portable electronic devices where each device is orientation-free relative to the pad. The power transmission pad is also configured to be power adaptive by changing the power transmission level depending on the number of devices being concurrently charged. Each device, is placed within the magnetic field for the purpose of charging the device battery. The power transmission pad includes a sweep frequency generator for generating power transmissions across a frequency spectrum. The number of devices to be charged is determined as well as an optimal frequency for maximum energy transfer to each device. The sweep frequency generator is set to cycle through the optimal frequencies determined for each device.

Abstract: A switching mode power converter includes a DSC with a digital PWM module configured for complementary operation mode during normal operation. The control algorithm of the DSC is configured such that during an initialization stage immediately following power up of the device relevant digital PWM modules used for interleaving operation are reconfigured to temporarily operate in an independent operation mode with the duty cycle associated with each channel set at zero. The reconfigured digital PWM modules remain set in the independent operation mode for a predefined period of time. Once the predefined time period is reached, the reconfigured digital PWM modules are again reconfigured back to the original complementary operation mode configuration and the control algorithm resumes normal operation of the DSC and digital PWM modules.

Abstract: A switched mode power converter includes a feedback mechanism by which a coded train of pulses with well defined integrity is generated on a secondary side of the power converter and transmitted to the primary side for decoding and application by a waveform analyzer to regulate the power converter output. The pulse train is modulated by a secondary side controller and transmitted across an isolation galvanic barrier. The main transformer is used as the signal transmitter from the secondary side to the primary side of the power converter. The coded pulse train is recognized by a controller on the primary side and translated into a regulating driving signal for a main switching element. The transmitted coded pulse train can be embedded with very high frequency modulation that allows the isolation galvanic barrier to act as a capacitive signal transmitter.

Abstract: A power transmission pad is configured to provide wireless power transmission to multiple portable electronic devices where each device is orientation-free relative to the pad. The power transmission pad is also configured to be power adaptive by changing the power transmission level depending on the number of devices being concurrently charged. Each device, is placed within the magnetic field for the purpose of charging the device battery. The power transmission pad includes a sweep frequency generator for generating power transmissions across a frequency spectrum. The number of devices to be charged is determined as well as an optimal frequency for maximum energy transfer to each device. A single combined optimal frequency is determined using the optimal frequencies determined for each individual device. The sweep frequency generator is locked to the single combined optimal frequency and a power transmission level is set according to the number of devices.

Abstract: A switched mode power converter includes a closed loop feedback control mechanism for regulating an output characteristic and a resonant type circuit for inclusion of resonant energy delivery. The characteristic impedance of the resonant type circuit is modified from an optimal energy transfer configuration to one that dampens fluctuations in a feedback signal used by the closed loop feedback mechanism. The modified characteristic impedance functions to dampen those fluctuations in the feedback signal resulting from leakage inductance energy provided by the resonant type circuit.

Abstract: A switched mode power converter is configured having predominate secondary side control. A primary side driving circuit is configured as a responsive state machine the output of which is input as the driving signal for a main switch. An output voltage, current or power is sensed and the secondary side controller compares the sensed output characteristic with a predefined reference. The comparison results in an error that signifies an amount that the output is out of regulation. The secondary side controller drives a secondary side switch to generate a voltage pulse across the secondary winding. The voltage pulse has a pulse width that represents the amount of error in the output characteristic. The voltage pulse is transmitted across the transformer and received by the primary side driving circuit, which generates a driving signal modulated according to the voltage pulse and drives the main switch to regulate the output characteristic.

Abstract: Methods of and apparatuses for electronic board assembly are provided. The apparatus can comprises one or more thermal heads controlled by a programmable logic controller. A user is able to enter the controlling parameters into the programmable logic controller through an human operator interface. The thermal heads are able to be connected with one or more pneumatic solenoid to make the thermal heads moving vertically until the thermal head in contact with the heat sink. The thermal head is able to provide a temperature, at or above the operating temperature of the thermal pad, capable of making the phase change thermal interface material to bond the heat sink and the electronic boards.

Abstract: An observation is made that the peak voltage value for a rectified AC voltage signal is substantially the same from cycle to cycle. Using this observation, a method of measuring an AC voltage is used to determine a more accurate RMS voltage value under light load conditions. The method includes rectifying the AC voltage signal to form a rectified signal, sampling the rectified signal to obtain a set of sampled values for each half-cycle of the AC voltage signal, searching the sampled values for each half-cycle to determine a local minimum value for each half-cycle, searching the sampled values following the local minimum value to determine a local maximum value for each half-cycle, and calculating a root mean square value from the local maximum value for each half-cycle thereby determining the root mean square value for each half-cycle of the AC voltage signal.

Abstract: The present disclosure describes a microprocessor executable diagnostic module operable to receive, from a vehicle component, a signal regarding a warning and/or error and select a destination for the signal from a plurality of destinations, the plurality of destinations comprising one or more of a vehicle input/output system to present the warning and/or error to a vehicle occupant, an emergency service provider, an emergency responder, a manufacturer of the vehicle, a service facility located in proximity to a current vehicle location, and a remotely located diagnostic service to diagnose a cause of the warning and/or error signal.

Abstract: A digital error feedback system, method and device adjusts the output voltage of a power converter. The digital error feedback system uses a digital comparator and one or more digital signal generators to generate and compare a digital signal corresponding to the output voltage to a reference digital signal in order to determine the current amount of error in the output voltage. The error is then able to be compensated for using a control signal generated based on the determined error.

Abstract: A method of and a system for making LED comprising concurrently forming multiple dam structures on a whole silicon wafer using a liquid transfer mold, attaching dies to the silicon wafer inside each of the dam structure, performing flux reflow, cleaning flux, performing wire bonding, dispensing phosphor, curing the phosphor, concurrently forming dome structures by using a liquid transfer mold on all of the dam structures, mounting wafer, and using a saw for single or multiple LED(s) singulation.

Abstract: A pulse scheme is used for load change detection in a switching mode power supply with low no-load power consumption. The pulse scheme includes a measurement pulse for determining a load condition or a no-load condition at the output. Generation of the measurement pulse results in sufficient energy transfer to the secondary side to accurately measure the output voltage via a reflected voltage on the primary side. Once in no-load operation mode, a reference pulse having a lower energy transfer than the measurement pulse is used to determine a baseline reflected voltage value that corresponds to a no-load condition. Successive detection pulses are then generated and corresponding reflected voltage measured and compared to the baseline reflected voltage. A change in the reflected value that exceeds a threshold value is indicative of a change in the no-load condition.

Abstract: A power converter circuit includes a transformer and a main switch controller by a primary side controller. A sensing circuit is implemented that senses the voltage at an auxiliary winding of the transformer while the main switch is ON. The auxiliary winding is another winding on the primary side of the transformer, magnetically coupled to the secondary winding and electrically isolated from the primary winding. When the voltage across the auxiliary winding reaches a predefined threshold voltage level, the main switch is switched OFF. The threshold voltage level is set at a value that minimizes an amount of energy transferred per pulse to the secondary side of the circuit while maintaining a minimum amount of energy transfer to enable output voltage sensing at the auxiliary winding.

Abstract: A system, method, and computer instructions is provided to render an on screen channel changer on a television. A request is received from a user to activate the on screen channel changer. An on screen channel changer for an Intelligent TV may include a display of a number bar, miniature (mini) electronic program guide (EPG), a dynamic EPG, and a program preview. The EPG information comes from EPG information sources including EPG information embedded in a content feed from a cable provider and EPG information from an internet source. The EPG information displayed can include a schedule of past, current, and upcoming TV programs. The on screen channel changer may be displayed on top of a TV program currently being viewed. The user changes the channel by making a channel number selection using the on screen channel changer.

Abstract: The present disclosure describes a microprocessor executable network controller operable to at least one of (a) isolate at least one other on board computational component in a vehicular wireless network not affected by a security breach event from a computational component affected by the security breach event and (b) isolate an on board computational component in the vehicular wireless network and affected by the security breach event from the at least one other on board computational component not affected by the security breach event.

Abstract: This invention relates to a substrate with via and pad structure(s) to reduce solder wicking. Each via and pad structure connects a component to conductive layers associated with the substrate. The substrate includes one or more plated vias, solder mask(s) surrounding the plated vias, and a conductive pad with a conductive trace connected to each plated via. The conductive pad extends beyond the terminal sides to increase solder formation and the solder mask reduces solder formation at the terminal end of the component. The via and pad structure is suitable for a variety of components and high component density. The invention also provides a computer implemented method for calculating the maximum distance of a conductive pad extending beyond the terminal side of a component.

Abstract: The present disclosure describes a microprocessor executable network selector on board a vehicle (a) to select, from among plural communication networks, a network for signal transmission of a selected signal to an on board destination based on one or more of a status of the selected network, a status of a node in the selected network, a signal/noise ratio of the selected network, type, urgency, importance, format, and/or requirement of signal to be transmitted, an available and/or unavailable bandwidth in the selected network and/or node of the selected network, a current performance parameter(s) of the selected network, and a quality of service of the selected network and (b) configure the selected signal for transmission over the selected network to the on board destination.

Abstract: The present disclosure describes a displayed object movement module that causes displayed objects or other content to be moved from a first source vehicle display to a second target vehicle display at the request of a source vehicle occupant associated with the first source vehicle display.