Patent application number | Description | Published |
20120124146 | Messaging System with Multiple Messaging Channels - A messaging system facilitates communication between users through various messaging channels. The messaging system supports multiple communication channels and includes a messaging module that automatically selects one or more of the messaging channels for delivering a message to a recipient of the message using, for example, a set of policy rules or a trained model. The messaging module may also provide, in a user interface for sending and receiving messages, a visual indication of the selected messaging channel to the sender of the message to provide the user with transparency about how the message will be delivered. Additionally, the message may be delivered via multiple messaging channels, where the messaging module may rescind messages from some of the messaging channels upon receiving a reply from the recipient of the message or other confirmation that the recipient has seen the message via one of the communication channels. | 05-17-2012 |
20130041956 | Rescinding Messages in a Messaging System With Multiple Messaging Channels - A messaging system facilitates communication between users through various messaging channels. The messaging system supports multiple communication channels and includes a messaging module that automatically selects one or more of the messaging channels for delivering a message to a recipient of the message using, for example, a set of policy rules or a trained model. The messaging module may also provide, in a user interface for sending and receiving messages, a visual indication of the selected messaging channel to the sender of the message to provide the user with transparency about how the message will be delivered. Additionally, the message may be delivered via multiple messaging channels, where the messaging module may rescind messages from some of the messaging channels upon receiving a reply from the recipient of the message or other confirmation that the recipient has seen the message via one of the communication channels. | 02-14-2013 |
20130041957 | Providing Transparency in a Messaging System With Multiple Messaging Channels - A messaging system facilitates communication between users through various messaging channels. The messaging system supports multiple communication channels and includes a messaging module that automatically selects one or more of the messaging channels for delivering a message to a recipient of the message using, for example, a set of policy rules or a trained model. The messaging module may also provide, in a user interface for sending and receiving messages, a visual indication of the selected messaging channel to the sender of the message to provide the user with transparency about how the message will be delivered. Additionally, the message may be delivered via multiple messaging channels, where the messaging module may rescind messages from some of the messaging channels upon receiving a reply from the recipient of the message or other confirmation that the recipient has seen the message via one of the communication channels. | 02-14-2013 |
20130191466 | Claiming Conversations Between Users and Non-Users of a Social Networking System - Users of a social networking system initiate conversations between other users and additional users who may not be registered to use the social networking system. Each additional user is identified by an item of contact information, and conversation messages are sent to an additional user using the contact information. The conversations are associated with the item of contact information and saved in the social networking system. A user of the social networking system may subsequently claim the item of contact information. The claiming user is given access to the associated conversations if the social networking system can verify that the item of contact information belongs to the claiming user. | 07-25-2013 |
20140089418 | STRUCTURING NOTIFICATIONS OF EVENTS TO USERS IN A SOCIAL NETWORKING SYSTEM - A social networking system identifies an event based on a thread including messages from users of the social networking system and communicates invitations to the event to one or more invited users. The social networking system receives a response to an invitation from a responding user and identifies a group of users invited to the event that have not responded to the invitation. From the users invited to the event that have not responded to the invitation, a subset of users having a threshold affinity to the responding user are selected. The social networking system notifies the subset of users of the responding user's response to the invitation and may also provide the subset of users with a suggestion for attending the event. | 03-27-2014 |
20140181231 | Rescinding Messages in a Messaging System With Multiple Messaging Channels - A messaging system facilitates communication between users through various messaging channels. The messaging system supports multiple communication channels and includes a messaging module that automatically selects one or more of the messaging channels for delivering a message to a recipient of the message using, for example, a set of policy rules or a trained model. The messaging module may also provide, in a user interface for sending and receiving messages, a visual indication of the selected messaging channel to the sender of the message to provide the user with transparency about how the message will be delivered. Additionally, the message may be delivered via multiple messaging channels, where the messaging module may rescind messages from some of the messaging channels upon receiving a reply from the recipient of the message or other confirmation that the recipient has seen the message via one of the communication channels. | 06-26-2014 |
20150312185 | CAPTURING AND SENDING MULTIMEDIA AS ELECTRONIC MESSAGES - One or more embodiments described herein include methods and systems of capturing and sending multimedia content items as electronic message. More specifically, systems and methods described herein provide users the ability to easily and effectively capture multimedia content items for inclusion in a communication session without navigating away from the communication session. Additionally, systems and methods described herein allow a multimedia content item to be sent to one or more co-users immediately following the capture of the multimedia content item without further user interaction. In other words, the system and methods can capture and automatically send a multimedia content item in response to a single user interaction. | 10-29-2015 |
Patent application number | Description | Published |
20100105319 | Redriver with Output Receiver Detection that Mirrors Detected Termination on Output to Input - A redriver chip is inserted between a transmitter chip and a receiver chip and re-drives differential signals from the transmitter chip to the receiver chip. The redriver chip has switched output termination that switches to a high value to detect far-end termination at the receiver chip, and to a low value for signaling. An output detector detects when the receiver chip has termination to ground and enables switched input termination to provide termination to ground on the lines back to the transmitter chip so that the far-end termination on the receiver chip is mirrored back to the transmitter chip, hiding the redriver chip. An input signal detector detects when the transmitter chip begins signaling and enables an equalizer, limiter, pre-driver, and output stage to re-drive the signals to the receiver chip. The input signal detector also causes the switched output termination to switch to the low value termination for signaling. | 04-29-2010 |
20120087405 | Trace Canceller with Equalizer Adjusted for Trace Length Driving Variable-Gain Amplifier with Automatic Gain Control Loop - Distortions of both amplitude and phase along a transmission line are compensated for by a trace canceller inserted between a transmitter and a receiver. The trace canceller has an equalizer that compensates for a trace length between the transmitter and the trace canceller. A variable gain amplifier between the equalizer and an output buffer has its gain controlled by an automatic gain control circuit that compares low-frequency swings of the input and output of the trace canceller. The gain of the variable gain amplifier is reduced to prevent the output buffer from saturating and clipping peak voltages on its output. Thus both the variable gain amplifier and the output buffer remain in the linear region. Training pulses from the transmitter are passed through the trace canceller without clipping of peak voltages, allowing the transmitter and receiver to adjust transmission parameters to best match the transmission line. | 04-12-2012 |
20120235704 | Redriver with Output Receiver Detection that Mirrors Detected Termination on Output to Input - A redriver chip is inserted between a transmitter chip and a receiver chip and re-drives differential signals from the transmitter chip to the receiver chip. The redriver chip has switched output termination that switches to a high value to detect far-end termination at the receiver chip, and to a low value for signaling. An output detector detects when the receiver chip has termination to ground and enables switched input termination to provide termination to ground on the lines back to the transmitter chip so that the far-end termination on the receiver chip is mirrored back to the transmitter chip, hiding the redriver chip. An input signal detector detects when the transmitter chip begins signaling and enables an equalizer, limiter, pre-driver, and output stage to re-drive the signals to the receiver chip. The input signal detector also causes the switched output termination to switch to the low value termination for signaling. | 09-20-2012 |
20120242377 | Re-Driver with Pre-Emphasis Injected Through a Transformer and Tuned by an L-C Tank - A re-driver circuit has pre-driver, intermediate, and output stages. Pre-emphasis on the output is generated by the intermediate stage and injected into an output stage. The intermediate stage is a frequency-tuned amplifier that has an inductive-capacitive L-C tank circuit that is tuned to a desired frequency of the output. The intermediate stage does not directly drive the output stage. Instead, an on-chip coupling transformer couples the L-C tank circuit to the output stage. The coupling transformer has a first inductor that is part of the L-C tank circuit in the intermediate stage, and a second inductor that is part of the output stage. Mutual inductance between the first inductor and the second inductor inductively couple a pre-emphasis voltage onto the output. The magnitude of the pre-emphasis can be changed by adjusting current in the intermediate stage. | 09-27-2012 |
20130049765 | In-Situ Cable Unplug Detector Operating During Normal Signaling Mode - An in-situ unplug detector circuit detects when a cable is disconnected or unplugged. Detection does not have to wait for normal signaling to pause, such at the end of a frame or timeout. Instead, detection occurs during normal signaling. When the cable is disconnected, the transmitter no longer drives the load at the far end of the cable, and thus can drive the near end to a higher high voltage and to a lower low voltage. The increased voltage swing is detected by a detector at the near end that amplifies the transmitter output to the cable. A fast detector has a higher bandwidth and faster response time than a slow detector, and generates a fast detect signal that crosses over a slow detect signal. When the cable is disconnected, the fast detect signal again crosses over the slow detect signal, and decision logic activates an unplug signal. | 02-28-2013 |
20130159759 | Signal Conditioning By Combining Precursor, Main, and Post Cursor Signals Without A Clock Signal - Embodiments of an apparatus for signal conditioning, a serial data interface, and a method for a programmable delay filter are disclosed. In an embodiment of an apparatus for signal conditioning, a wave shaping circuit has a precursor signal, a post cursor signal, and a main signal combined to provide an output signal. The precursor signal, the post cursor signal, and the main signal are provided for combination independently of a clock signal. The main signal is delayed relative to the precursor signal, and the post cursor signal is delayed relative to the main signal. | 06-20-2013 |
20140140386 | TRACE CANCELLER WITH EQUALIZER ADJUSTED FOR TRACE LENGTH DRIVING VARIABLE-GAIN AMPLIFIER WITH AUTOMATIC GAIN CONTROL LOOP - Distortions of both amplitude and phase along a transmission line are compensated for by a trace canceller inserted between a transmitter and a receiver. The trace canceller has an equalizer that compensates for a trace length between the transmitter and the trace canceller. A variable gain amplifier between the equalizer and an output buffer has its gain controlled by an automatic gain control circuit that compares low-frequency swings of the input and output of the trace canceller. The gain of the variable gain amplifier is reduced to prevent the output buffer from saturating and clipping peak voltages on its output. Thus both the variable gain amplifier and the output buffer remain in the linear region. Training pulses from the transmitter are passed through the trace canceller without clipping of peak voltages, allowing the transmitter and receiver to adjust transmission parameters to best match the transmission line. | 05-22-2014 |
20140210509 | REDRIVER WITH OUTPUT RECEIVER DETECTION THAT MIRRORS DETECTED TERMINATION ON OUTPUT TO INPUT - A redriver chip is inserted between a transmitter chip and a receiver chip and re-drives differential signals from the transmitter chip to the receiver chip. The redriver chip has switched output termination that switches to a high value to detect far-end termination at the receiver chip, and to a low value for signaling. An output detector detects when the receiver chip has termination to ground and enables switched input termination to provide termination to ground on the lines back to the transmitter chip so that the far-end termination on the receiver chip is mirrored back to the transmitter chip, hiding the redriver chip. An input signal detector detects when the transmitter chip begins signaling and enables an equalizer, limiter, pre-driver, and output stage to re-drive the signals to the receiver chip. The input signal detector also causes the switched output termination to switch to the low value termination for signaling. | 07-31-2014 |
20150311950 | TRACE CANCELLER WITH EQUALIZER ADJUSTED FOR TRACE LENGTH DRIVING VARIABLE-GAIN AMPLIFIER WITH AUTOMATIC GAIN CONTROL LOOP - Distortions of both amplitude and phase along a transmission line are compensated for by a trace canceller inserted between a transmitter and a receiver. The trace canceller has an equalizer that compensates for a trace length between the transmitter and the trace canceller. A variable gain amplifier between the equalizer and an output buffer has its gain controlled by an automatic gain control circuit that compares low-frequency swings of the input and output of the trace canceller. The gain of the variable gain amplifier is reduced to prevent the output buffer from saturating and clipping peak voltages on its output. Thus both the variable gain amplifier and the output buffer remain in the linear region. Training pulses from the transmitter are passed through the trace canceller without clipping of peak voltages, allowing the transmitter and receiver to adjust transmission parameters to best match the transmission line. | 10-29-2015 |
20150363350 | HYBRID REPEATER FOR SUPPORTING BACKWARD COMPATIBILITY - Hybrid repeaters are described that are capable of transmitting data in accordance with different versions of a serial data protocol are described. The appropriate circuitry to be used to transmit incoming serial data is determined by monitoring sideband communication (e.g., a link training handshake) between the transmitter and the receiver. | 12-17-2015 |
Patent application number | Description | Published |
20100079081 | Light-Emitting Diode (LED) Driver and Controller - Apparatuses, methods, systems, and circuits for light-emitting diode (LED) control are disclosed. In one embodiment, an LED control circuit can include a first pin receiving an input voltage supply; a second pin receiving a primary signal from a primary winding of a transformer coupled to the LED; a third pin coupled to a ground supply; and logic configured to estimate an output current and/or output voltage at the LED coupled to a secondary winding of the transformer from the input voltage supply and the primary signal. | 04-01-2010 |
20100090671 | Intelligent Switching Controller and Power Conversion Circuits and Methods - In one embodiment, the present invention includes a circuit comprising a voltage estimation circuit to receive a first voltage and generate an estimation of an output voltage of a power conversion circuit based on the first voltage. The first voltage is from a circuit node between a first terminal of a switch and a first terminal of an inductor. The circuit further comprises a current estimation circuit to receive a first current and generate an estimation of an output current of the power conversion circuit based on the first current. The first current is a current through the switch. The circuit further comprises a pulse width modulation circuit to produce a pulse width modulated signal based on the estimation of an output voltage and the estimation of an output current. | 04-15-2010 |
20100253395 | TRANSISTOR Gate Driver for Short Circuit Protection - Particular embodiments generally relate to driver structures. In one embodiment, an apparatus includes a first driver that drives a first current for a transistor. The first driver drives the first current during a first portion of a drive time of driving the transistor. The first driver is OFF during a second portion. A second driver drives a second current for the transistor during the second portion. | 10-07-2010 |
20110038184 | Isolated AC-DC Converter with Master Controller on Secondary Side and Slave Controller on Primary Side - An isolated alternating current (AC)-direct current (DC) converter is disclosed. The isolated AC-DC converter comprises a slave control circuit including a slave driver module configured to receive a command and to control coupling of the slave control circuit to a primary-side inductor of a transformer based on the command, a master control circuit coupled to a secondary-side inductor of the transformer, the master control circuit including a master control module configured to sense a feedback voltage across a load and to generate the command based on the feedback voltage and a reference voltage, and a coupler configured to communicate the command from the master control module to the slave driver module and to provide isolation between the master control module and the slave driver module. | 02-17-2011 |
20110148312 | INTEGRATED BUCK POWER SUPPLY ARCHITECTURES FOR LED-BASED DISPLAYS - A system includes a plurality of light emitting diodes (LEDs) and a control module configured to generate pulse width modulated (PWM) pulses to drive the LEDs. The LEDs and the control module are integrated in an integrated circuit (IC) package. | 06-23-2011 |
20110199014 | Dimmer Circuit for Electronic Loads - In one embodiment, a dimmer circuit is coupled to an electronic load and receives an alternating current (AC) signal. A phase control circuit turns the dimmer circuit on for a first portion of the AC signal to turn on the electronic load. The dimmer circuit turns off during a second portion of the AC signal to turn off the electronic load. A switch is coupled to the phase control circuit. The switch is controlled to couple the phase control circuit to ground when the dimmer circuit is off where the switch is part of a power supply supplying power to the electronic load. | 08-18-2011 |
20110241572 | LED CONTROLLER WITH COMPENSATION FOR DIE-TO-DIE VARIATION AND TEMPERATURE DRIFT - A system including a calibration module, a selection module, and a control module. The calibration module is configured to generate calibration data for a plurality of light emitting diodes (LEDs). The calibration data include current through the LEDs and corresponding luminosities of the LEDs. The selection module is configured to select one of a plurality of templates corresponding to the LEDs. The selected template includes at least one of temperature, current, and voltage characteristics of the LEDs. The control module is configured to determine a temperature of the LEDs and adjust current through the LEDs based on the temperature, the selected template, and the calibration data to maintain a luminosity of the LEDs at a predetermined luminosity. | 10-06-2011 |
20110266976 | System and Method of Tuning Current for LEDs - An apparatus includes a LED and a regulator circuit. The regulator circuit controls the current provided to the LED according to a calibration signal that is coupled to the current. The regulator circuit adjusts the output of the LED when the calibration signal is adjusted. In this manner, the LED may be calibrated to generate light at a desired brightness level and color level. | 11-03-2011 |
20120002449 | Primary Side Voltage Control in Flyback Converter - In one embodiment, an apparatus includes a sampling component. The sampling component receives a first voltage signal on a primary side of a transformer and monitors the first voltage signal to determine a voltage sampling time. The determined voltage sampling time is when the first voltage signal is used to estimate a second voltage level on a secondary side of the transformer. The first component further samples the first voltage signal at the voltage sampling time to determine a first voltage level. A second component outputs a control signal to control a switch to regulate the second voltage level based on the first voltage level. | 01-05-2012 |
20120081029 | Average Output Current Estimation Using Primary-Side Sensing - In one embodiment, an apparatus includes a transformer comprising a primary side and a secondary side. A switch is coupled to the primary side. A control signal circuit is configured to: sample a first current on the primary side of the transformer; estimate a second current value on the secondary side of the transformer using the sampling of the first current on the primary side and a turn ratio of the transformer; and output a signal to control a turn on time for the switch. | 04-05-2012 |
20120091910 | Dimming Control for Electronic Lamp - In one embodiment, an apparatus includes circuitry configured to receive a dimming input to control a dimming level of a lamp. Also, the apparatus includes circuitry configured to generate a control signal based on the dimming input. The control signal indicates the dimming level for a converter of the lamp and the converter is configured to interpret the control signal to control to the dimming level of the lamp using a sinusoidal signal. | 04-19-2012 |
20120163040 | REDUCING VOLTAGE STRESS IN A FLYBACK CONVERTER DESIGN - Disclosed is flyback converter having a controller that performs a startup switching process when the flyback converter is powered up, and then performs normal switching afterward. The controller includes a pulse generator to generate a control signal for normal switching. During startup switching, the controller may generate a control signal by output every N | 06-28-2012 |
20120212258 | TRIAC Dimmer Detection - Methods, circuits, and systems for determining the presence of a chopped input signal are disclosed. A digital signal generator can produce multiple digital signals when an alternating current (AC) signal input reaches multiple threshold voltages. The times at which the threshold voltages are reached can be determined by looking at the times at which the digital signals go high and low. The differences between the times at which the digital signals go high and low are used to determine if the AC signal input is a leading or trailing edge chopped signal. The AC input signal is a leading edge chopped signal when the difference between the times at which the digital signals go high is less than a predetermined time threshold, and is a trailing edge chopped signal when the difference between the times at which the digital signals go low is less than a predetermined time threshold. | 08-23-2012 |
20120230065 | Two-Peak Current Control for Flyback Voltage Converters - A system including a switch configured to supply power to a load. A first comparator is configured to compare a first current through the switch to a first threshold. A second comparator is configured to compare the first current through the switch to a second threshold. The second threshold is greater than the first threshold. A current control module is configured to turn off the switch (i) for a first duration in response to the first current through the switch being greater than or equal to the first threshold and (ii) for a second duration in response to the first current through the switch being greater than or equal to the second threshold. The current control module is configured to adjust the second duration based on a difference between an estimated current through the load and a desired current through the load. | 09-13-2012 |
20120319621 | TRIAC DIMMING SYSTEMS FOR SOLID-STATE LOADS - A system includes a transformer. The transformer includes a first coil and a second coil. The first coil is configured to receive a first voltage based on an output of a switching circuit. The second coil is configured to generate a first current based on the first voltage to power a solid-state load. The system also includes a third coil. The third coil is configured to generate a second voltage based on the first voltage. | 12-20-2012 |
20130020956 | CORRELATED COLOR TEMPERATURE CONTROL METHODS AND DEVICES - New and useful methods and systems for providing lighting control are disclosed. For example, in an embodiment a lighting system includes one or more first solid state lights having a first aesthetic color, one or more second solid state lights having a second aesthetic color, the second aesthetic color having an appreciably longer wavelength than the first aesthetic color, and an amplitude correlation circuit configured to control a ratio of first light produced by the one or more first solid state lights to second light produced by the one or more second solid state lights as a function of a received dimming control signal. | 01-24-2013 |
20130049626 | METHOD AND APPARATUS FOR LED LIGHTING - Aspects of the disclosure provide a circuit. The circuit includes a first switch, a second switch and a controller. The first switch is switched on and off to allow a boost circuit to transfer electric energy from an input power supply to a capacitor to generate an intermediate power supply having a higher voltage than the input power supply. The second switch is switched on and off to allow a buck circuit to provide a driving voltage based on the intermediate power supply to drive a load device, and to regulate a current to the load device. The controller is configured to provide a first signal to the first switch and a second signal to the second switch to switch on and off the first switch and the second switch. | 02-28-2013 |
20130057163 | REGULATOR FOR LED LIGHTING COLOR MIXING - A system includes a first light emitting diode configured to produce light of a first color and a second light emitting diode configured to produce light of a second color. A constant current circuit is configured to provide a first current, wherein (i) the first current is approximately constant, (ii) a first portion of the first current flows through the second light emitting diode, and (iii) a remaining portion of the first current flows through the first light emitting diode. A current regulating circuit is configured to control the first portion of the first current flowing through the second light emitting diode. The current regulating circuit is connected in series with the second light emitting diode, the constant current circuit, and a reference potential. The first light emitting diode is connected in series directly between the constant current circuit and the reference potential. | 03-07-2013 |
20130113451 | INTELLIGENT SWITCHING CONTROLLER AND POWER CONVERSION CIRCUITS AND METHODS - A power conversion circuit comprising a voltage estimation circuit, a current estimation circuit, and a pulse width modulation circuit. The voltage estimation circuit is configured to receive a voltage corresponding to an input of an inductor of the power conversion circuit and generate an estimate of an output voltage of the power conversion circuit based on the voltage. The current estimation circuit is configured to receive a current corresponding to a switch connected in series with the inductor and generate an estimate of an output current of the power conversion circuit based on the current. The pulse width modulation circuit is configured to produce a pulse width modulated signal based on the estimate of the output voltage and the estimate of the output current. | 05-09-2013 |
20130134905 | COLOR MIXING SYSTEM WITH BUCK-BOOST AND FLYBACK TOPOLOGIES - A system includes a first solid-state lamp that generates a first illuminated output having a first color. A second solid-state lamp generates a second illuminated output having a second color. The second illuminated output is mixed with the first illuminated output to generate a third illuminated output having a third color. An inductor or a transformer includes a primary coil and a bias coil. A first circuit includes the primary coil and a first switch. The first circuit supplies power to the first solid-state lamp. A second circuit includes the bias coil and a second switch. The second circuit supplies power to the second solid-state lamp. A control module alters the third color including controlling (i) a state of the first switch to adjust current supplied to the first solid-state lamp, and (ii) a state of the second switch to adjust current supplied to the second solid-state lamp. | 05-30-2013 |
20130162156 | METHOD AND APPARATUS FOR CURRENT CONTROL WITH LED DRIVER - Aspects of the disclosure provide a circuit that includes a detection circuit and a controller. The detection circuit is configured to detect a starting of a conduction in a power supply provided via an electronic transformer. The controller is configured to control a current regulating circuit to pull a current from the electronic transformer at a pre-determined level during a time duration following the starting of the conduction, and pull the current at a reduced level according to a pre-determined profile after the time duration. | 06-27-2013 |
20130249419 | LED CONTROLLER WITH COMPENSATION FOR DIE-TO-DIE VARIATION AND TEMPERATURE DRIFT - A system including a selection module to select one of a plurality of templates corresponding to a plurality of light emitting diodes, where the selected template includes one or more of temperature, current, and voltage characteristics of the plurality of light emitting diodes. A control module measures a voltage across one of the plurality of light emitting diodes; determines a temperature of the plurality of light emitting diodes based on the voltage measured across the one of the plurality of light emitting diodes and the selected template; and in order to maintain a luminosity of the plurality of light emitting diodes at a predetermined luminosity, adjusts current through the plurality of light emitting diodes based on the temperature, the selected template, and calibration data. The calibration data include current through the plurality of light emitting diodes and corresponding luminosities of the plurality of light emitting diodes. | 09-26-2013 |
20130307434 | METHOD AND APPARATUS FOR CONTROLLING A LIGHTING DEVICE - Aspects of the disclosure provide a method. The method includes detecting a dimming characteristic in an energy source that provides energy to be transferred to a load via a magnetic component, receiving a dimming control signal, and controlling a switch in connection with the magnetic component based on the dimming characteristic and the dimming control signal to transfer energy to the load via the magnetic component. | 11-21-2013 |
20140063857 | METHOD AND APPARATUS FOR CONTROLLING A LIGHTING DEVICE - Aspects of the disclosure provide a method. The method includes determining a power adjustment to a load, determining whether a switching frequency of a pulse width modulation (PWM) signal is within a specific range, and adjusting the switching frequency of the PWM signal based on the power adjustment to control power transfer to the load. The switching frequency is adjusted to remain in the specific range. | 03-06-2014 |
20140091714 | CURRENT LIMITING CIRCUIT AND METHOD FOR LED DRIVER - Aspects of the disclosure provide a circuit that includes a driver circuit and a current limiter circuit. The driver circuit is configured to drive a load with an output current when the load is coupled with the driver circuit. The current limiter circuit is configured to turn on a path to deplete a portion of the output current from the driver circuit in order to prevent a load current flowing through the load from exceeding a current limit. | 04-03-2014 |
20140111090 | TEMPERATURE FOLDBACK CIRCUIT FOR LED LOAD CONTROL BY CONSTANT CURRENT SOURCE - An apparatus includes an input node, a light-emitting diode (LED) string to receive a current from the input node, a voltage divider to output a control voltage, and a switch to receive the control voltage. The switch coupled to the LED string controls the current through the LED string according to the control voltage. | 04-24-2014 |
20140217916 | METHOD AND APPARATUS FOR ALTERING A COLOR OF A MIXTURE OF LIGHT PROVIDED BY MIXING OUTPUTS OF LIGHT FROM MULTIPLE LAMPS - A system including first and second lamps, one of an inductor or a transformer, first and second switches, and a control module. The first lamp generates a first output of light having a first color. The second lamp generates a second output of light having a second color. The first and second outputs of light are mixed to provide a mixture of light having a third color. The transformer includes first and second coils. The first and second coils supply power respectively to the first and second lamps. The first and second switches are connected respectively to the first and second coils. The control module alters the third color by controlling (i) a state of the first switch to adjust a first amount of current supplied to the first lamp, and (ii) a state of the second switch to adjust a second amount of current supplied to the second lamp. | 08-07-2014 |
20140239825 | REDUCED NOISE POWER CONVERTER USING NOVEL SHIELD - Power converters that produce less noise are disclosed. For example, in an embodiment, power converter can include a first inductor magnetically coupled to a second inductor, wherein a first end of the second inductor is electrically open and a second end of the second inductor is electrically coupled to ground via a second capacitor, a transistor electrically connected to the first inductor, and control circuitry to control switching of the transistor, wherein when the transistor is repeatedly switched on and off by the control circuitry, a current loop is formed through the transistor, the second capacitor, the first inductor and the second inductor, the current loop causing a reduced amount of switching noise to be generated by the power converter. | 08-28-2014 |
20140284635 | INTEGRATED POWER SUPPLY ARCHITECTURE FOR LIGHT EMITTING DIODE-BASED DISPLAYS - An integrated circuit including a die of the integrated circuit, the die including an insulating layer, light emitting diodes, a semiconductor layer, and a control module. The insulating layer includes a first side and a second side. The second side is opposite to the first side. The light emitting diodes are arranged on the first side of the insulating layer. The semiconductor layer is arranged adjacent to the second side of the insulating layer. The light emitting diodes are connected to the semiconductor layer using connections from the first side of the insulating layer to the second side of the insulating layer. The control module is arranged on the semiconductor layer. The control module is configured to output pulse width modulated pulses to the light emitting diodes via the connections. | 09-25-2014 |
20140285169 | SYSTEMS AND METHODS FOR ESTIMATING AN OUTPUT CURRENT OF A POWER CONVERSION CIRCUIT - A controller for a power conversion circuit that includes an inductor, a diode, and a switch. The controller includes a counter configured to determine, based on a first voltage input to the inductor, an on-time of the diode. The on-time of the diode corresponds to an amount of time that the diode is conducting a first current to a load of the power conversion circuit. A current estimation circuit configured to estimate, based on the on-time of the diode and an on-time of the switch, an output current of the power conversion circuit. The on-time of the switch corresponds to an amount of time that the switch is conducting a second current. A pulse width modulator is configured to provide, based on the estimated output current, a gate drive signal to the switch. The gate drive signal selectively transitions the switch between an on state and an off state. | 09-25-2014 |
20140327372 | METHOD AND APPARATUS FOR DIMMABLE LED DRIVER - Aspects of the disclosure provide a method for driving dimmable load. The method includes detecting a dimming characteristic in an energy source from which a load draws a first energy according to the dimming characteristic. The dimming characteristic requires a second energy in addition to the first energy to be drawn from the energy source to sustain an operation of the energy source. The method further includes biasing a switch to consume the second energy. The second energy and the first energy are drawn from the energy source to sustain the operation of the energy source. | 11-06-2014 |
20140333216 | MULTI-STRING DIMMABLE LED DRIVER - An apparatus includes a first LED driver configured to control a first string of LEDs, a second LED driver configured to control a second string of LEDs, a third LED driver configured to control a third string of LEDs, and a control circuit configured to receive a control signal and to control the first, second, and third LED drivers so that the first, second, and third strings of LEDs cooperate in producing light according to the control signal and a color curve. | 11-13-2014 |
20140347894 | CURRENT SHAPING FOR DIMMABLE LED - Aspects of the disclosure provide a circuit that includes a detector and a controller. The detector is configured to detect a firing start by a triode for alternating current (TRIAC) in a power supply. The controller is configured to control a switch in connection with a magnetic component in response to the firing start to shape a profile of a current pulled from the power supply to satisfy a latch current requirement and a hold current requirement of the TRIAC. | 11-27-2014 |
20150015158 | APPARATUSES FOR BLEEDING CURRENT FROM A TRANSFORMER OF A SOLID-STATE LIGHT EMITTING DIODE - A system configured to provide current to power a solid-state light emitting diode in accordance with a dimming level, wherein the dimming level corresponds to an amount of light provided from the solid-state light emitting diode. The system includes a transformer and a switch. The transformer includes a coil. The transformer is configured to receive a first current. The coil is configured to, based on the first current, output a second current to power the solid-state light emitting diode. The switch is configured to, based on a dimming level that corresponds to the amount of light provided from the solid-state light emitting diode of the system, bleed a portion of the second current out of the coil to a ground reference in order to divert the portion of the second current from being supplied to the solid-state light emitting diode. | 01-15-2015 |
20150077090 | LINE VOLTAGE DETECTION CIRCUIT - A first filter outputs a first signal in response to receiving an input signal. The first signal has a first state in response to the input signal reaching a first threshold voltage on a leading edge of the input signal, and a second state in response to the input signal reaching the first threshold voltage on a trailing edge of the input signal. A second filter outputs a second signal in response to receiving the input signal. The second signal has the first state in response to the input signal reaching a second threshold voltage on the leading edge of the input signal, and the second state in response to the input signal reaching the second threshold voltage on the trailing edge of the input signal. A detection circuit determines, based on times when the first and second thresholds are reached, whether the input signal is received from a triac. | 03-19-2015 |
20150078047 | CURRENT SHAPING FOR DIMMABLE LED - Aspects of the disclosure provide a circuit that includes a detector and a controller. The detector is configured to detect a firing start by a triode for alternating current (TRIAC) in a power supply. The controller is configured to control a switch in connection with a magnetic component in response to the firing start to shape a profile of a current pulled from the power supply to satisfy a latch current requirement and a hold current requirement of the TRIAC. | 03-19-2015 |
Patent application number | Description | Published |
20080260740 | Anti-LFL2 Antibodies for the Diagnosis, Prognosis and Treatment of Cancer - Particular anti-LFL2 antibody compositions are provided herein. These antibodies may be used for diagnosis, prognosis, therapeutic monitoring and treatment of cancer, especially breast cancer, head/neck cancer, lung cancer, ovarian cancer, stomach cancer and pancreatic cancer. Furthermore, anti-LFL2 antibodies are provided herein which target the LFL2 stump remaining after proteolytic cleavage of the extracellular domain of LFL2. Additionally, anti-LFL2 antibodies are provided herein which target the stroma surrounding cancer tumors, wherein said stroma-targeting anti-LFL2 antibodies disrupt the integrity of the stroma surrounding the cancer tumor, and also make the stroma more permeable to chemotherapeutic agents and other molecular drug agents that target tumor cells. | 10-23-2008 |
20120225060 | ANTI-IL-6 RECEPTOR ANTIBODIES AND METHODS OF USE - The present invention provides anti-IL-6R monoclonal antibodies and related compositions, which may be used in any of a variety of therapeutic methods for the treatment of rheumatoid arthritis and other diseases. | 09-06-2012 |
20120301488 | ANTI-CD40 ANTIBODIES AND METHODS OF USE - The present invention provides high affinity anti-CD40 monoclonal antibodies and related compositions, which may be used in any of a variety of therapeutic methods for the treatment of cancer and other diseases. | 11-29-2012 |
20130330355 | ANTI-IL-1BETA ANTIBODIES AND METHODS OF USE - The present invention provides anti-IL-1β monoclonal antibodies and related compositions, which may be used in any of a variety of therapeutic methods for the treatment of inflammatory and other diseases. | 12-12-2013 |
20140120103 | ANTI-CD40 ANTIBODIES AND METHODS OF USE - The present invention provides high affinity anti-CD40 monoclonal antibodies and related compositions, which may be used in any of a variety of therapeutic methods for the treatment of cancer and other diseases. | 05-01-2014 |
20140322239 | ANTI-IL-6 RECEPTOR ANTIBODIES AND METHODS OF USE - The present invention provides anti-IL-6R monoclonal antibodies and related compositions, which may be used in any of a variety of therapeutic methods for the treatment of rheumatoid arthritis and other diseases. | 10-30-2014 |
20140349395 | ANTI-CD40 ANTIBODIES AND METHODS OF USE - The present invention provides high affinity anti-CD40 monoclonal antibodies and related compositions, which may be used in any of a variety of therapeutic methods for the treatment of cancer and other diseases. | 11-27-2014 |
20140377282 | ANTI-KDR ANTIBODIES AND METHODS OF USE - The present invention provides anti-KDR monoclonal antibodies and related compositions, which may be used in any of a variety of therapeutic methods for the treatment of a variety of cancers, rheumatoid arthritis, diabetic retinopathy and other diseases associated with aberrant VEGF or KDR expression and/or activity. | 12-25-2014 |
20150307616 | ANTI-CD40 ANTIBODIES AND METHODS OF USE - The present invention provides high affinity anti-CD40 monoclonal antibodies and related compositions, which may be used in any of a variety of therapeutic methods for the treatment of cancer and other diseases. | 10-29-2015 |