Patent application number | Description | Published |
20080304187 | FAULT CONDITION PROTECTION - A power converter controller circuit is disclosed. In one aspect, a power converter controller circuit includes a control circuit to generate a switching signal to be coupled to a power switch to control power delivered to an output of a power converter. A timing circuit is to be coupled to the power switch and coupled to receive a feedback signal and the switching signal. The timing circuit is to disable the power switch from receiving the switching signal in response to the feedback signal after detection of a fault condition. The feedback signal repeatedly transitions between first and second states in response to the output when the power supply operates normally. The feedback signal maintains its state when the power supply is in the fault condition. The feedback signal transitions between the first and second states independently from the switching signal. | 12-11-2008 |
20100194198 | METHOD AND APPARATUS FOR IMPLEMENTING AN UNREGULATED DORMANT MODE WITH AN EVENT COUNTER IN A POWER CONVERTER - A control circuit for use in a power converter with an unregulated dormant mode of operation includes a drive signal generator coupled to generate a drive signal to control switching of a power switch to be coupled to the control circuit to regulate a flow of energy to a power converter output in response to an energy requirement of one or more loads to be coupled to the power converter output. An unregulated dormant mode control circuit is included and is coupled to render dormant the drive signal generator thereby ceasing the regulation of the flow of energy to the power converter output by the drive signal generator when the energy requirement of the one or more loads falls below a threshold for more than a first period of time. The drive signal generator is coupled to be unresponsive to changes in the energy requirements of the one or more loads when dormant. The unregulated dormant mode control circuit is coupled to power up the drive signal generator after a second period of time has elapsed. The drive signal generator is coupled to again be responsive to changes in the energy requirement of the one or more loads after the period of time has elapsed. | 08-05-2010 |
20100194367 | METHOD AND APPARATUS TO REGULATE AN OUTPUT VOLTAGE OF A POWER CONVERTER AT LIGHT/NO LOAD CONDITIONS - An example apparatus to regulate an output voltage of a power converter at light/no load conditions includes a driver circuit, a feedback circuit, and an adjustable voltage reference circuit. The driver circuit is coupled to output a drive signal to switch a power switch between an ON state and an OFF state to regulate an output of the power converter. The feedback circuit is coupled to the driver circuit and is further coupled to output an enable signal to switch the power switch to an ON state in response to an output voltage signal. The adjustable voltage reference circuit is coupled to adjust a voltage reference such that a bias winding voltage of the power converter is adjusted nonlinearly in response to a load that is to be coupled to the output of the power converter. | 08-05-2010 |
20100194445 | POWER SUPPLY CONTROLLER WITH INPUT VOLTAGE COMPENSATION FOR EFFICIENCY AND MAXIMUM POWER OUTPUT - A controller for a power supply includes a logic block and a time-to-frequency converter. The logic block is to generate a drive signal in response to a clock signal. The drive signal is to be coupled to control switching of a power switch of the power supply to regulate an output of the power supply. The time-to-frequency converter is coupled to the logic block and generates the clock signal having a frequency responsive to a time period of the drive signal. | 08-05-2010 |
20100277838 | FAULT CONDITION PROTECTION - A regulator for a switched mode power supply includes switching regulator logic, a counter and a logic gate. The switching regulator logic is coupled to receive a feedback signal and to generate a switching signal in response. The feedback signal periodically cycles between a first state and a second state when the power supply operates normally. The counter is coupled to receive the feedback signal and an output of the counter indicates an auto-restart mode of the regulator in response to the feedback signal remaining in the first state for a predetermined count. An output of the logic gate enables the power switch to turn on and off in response to the switching signal when the output of the counter does not indicate the auto-restart mode and the output of the logic gate disables the power switch in response to the output of the counter indicating the auto-restart mode. | 11-04-2010 |
20110080209 | METHOD AND APPARATUS FOR IMPLEMENTING SLEW RATE CONTROL USING BYPASS CAPACITOR - A circuit to control the slew rate of charging a capacitance using the capacitance is disclosed. An example circuit includes a regulator circuit to regulate a supply voltage during a normal operation mode of the circuit. A capacitance circuit is coupled to the regulator circuit. The regulator circuit is coupled to charge a capacitance between a first node and a second node of the capacitance circuit with a charge current. A slew rate control circuit is coupled to the regulator circuit and the capacitance circuit. The slew rate control circuit sets a slew rate of a voltage between the first and second nodes during a power up mode of the circuit. | 04-07-2011 |
20110121889 | Temperature independent reference circuit - A temperature independent reference circuit includes first and second bipolar transistors with commonly coupled bases. First and second resistors are coupled in series between the emitter of the second bipolar transistor and ground. The first and second resistors have first and second resistance values, R | 05-26-2011 |
20110188274 | FAULT CONDITION PROTECTION - A regulator for a switched mode power supply includes switching regulator logic, a counter and a switching transistor. The switching regulator logic is coupled to receive a feedback signal and to generate a switching signal in response. The feedback signal periodically cycles between a first state and a second state when the power supply operates normally. The counter is coupled to receive the feedback signal and an output of the counter indicates an auto-restart mode of the regulator in response to the feedback signal remaining in the first state for a predetermined count. The switching transistor is turned on and off in response to the switching signal when the output of the counter does not indicate the auto-restart mode and is disabled when the output of the counter indicates the auto-restart mode. | 08-04-2011 |
20110255310 | METHOD AND APPARATUS FOR IMPLEMENTING AN UNREGULATED DORMANT MODE WITH AN EVENT COUNTER IN A POWER CONVERTER - A method for controlling an output of a power converter includes generating a drive signal with a control circuit, entering a dormant mode of operation that includes powering down the control circuit if a flow of energy to an output of the power converter is less than a threshold value for more than a first period of time, and powering up the control circuit after it is in the dormant mode of operation for a second period of time. | 10-20-2011 |
20110298529 | Temperature independent reference circuit - A temperature independent reference circuit includes first and second bipolar transistors with commonly coupled bases. First and second resistors are coupled in series between the emitter of the second bipolar transistor and ground. The first and second resistors have first and second resistance values, R | 12-08-2011 |
20120068680 | METHOD AND APPARATUS FOR IMPLEMENTING SLEW RATE CONTROL USING BYPASS CAPACITOR - An example circuit includes a regulator circuit coupled to first and second nodes. A capacitance circuit and a slew rate control circuit are coupled between the first and second nodes. The regulator circuit is coupled to charge a capacitance of the capacitance circuit with a charge current. The slew rate control circuit is coupled to control a change in voltage over change in time between the first and second nodes during a power up mode of the circuit. The slew rate control circuit further includes a switch and a resistor. The slew rate control circuit is coupled to switch the switch in response to a voltage between the first and second nodes. A voltage drop across the resistor is limited to a base-emitter voltage drop of a transistor coupled between the first and second nodes to set the change in voltage over change in time. | 03-22-2012 |
20120146715 | Temperature Independent Reference Circuit - A temperature independent reference circuit includes first and second bipolar transistors with commonly coupled bases. First and second resistors are coupled in series between the emitter of the second bipolar transistor and ground. The first and second resistors have first and second resistance values, R | 06-14-2012 |
20120161739 | VARIABLE TIME CLAMP FOR A POWER SUPPLY CONTROLLER - An example integrated circuit for use in a power supply includes a feedback terminal and a controller having a variable time clamp (VTC). The feedback terminal is to be coupled to receive a feedback signal and the controller is to be coupled to enable or disable the conduction of a power switch during a switching cycle in response to the feedback signal. The controller includes a current limit comparator coupled to terminate the conduction of the power switch during an enabled switching cycle in response to a current through the power switch exceeding a variable current limit. The VTC is coupled to clamp the feedback terminal to a voltage for a clamp time that is responsive to the variable current limit. | 06-28-2012 |
20120163043 | METHOD AND APPARATUS TO REGULATE AN OUTPUT VOLTAGE OF A POWER CONVERTER AT LIGHT/NO LOAD CONDITIONS - An example controller for a primary side control power converter includes a feedback circuit, a driver circuit, and an adjustable voltage reference circuit. The feedback circuit is coupled to compare a feedback signal representative of a bias winding voltage of the power converter with a voltage reference. The driver circuit is coupled to output a switching signal to control a switch of the power converter to regulate an output of the power converter in response the feedback circuit. The adjustable voltage reference circuit is coupled to adjust the voltage reference such that the bias winding voltage is adjusted nonlinearly in response to a load condition at the output of the power converter. The adjustable voltage reference circuit is further coupled to detect the load condition in response to the switching signal. | 06-28-2012 |
20120206842 | FAULT CONDITION PROTECTION - A switched mode power supply includes a transformer and an integrated circuit regulator. The integrated circuit regulator is coupled to the transformer and includes switching regulator logic, a counter, and a switching transistor. The regulator logic generates a switching signal in response to the feedback signal. The counter receives the feedback signal, where the feedback signal periodically cycles between a first state and a second state when the switched mode power supply operates normally. An output of the counter indicates an auto-restart mode of the regulator in response to the feedback signal remaining in the first state for a predetermined count due to a fault condition. The switching transistor is coupled to be turned on and off in response to the switching signal when the output of the counter does not indicate the auto-restart mode and is disabled when the output of the counter indicates the auto-restart mode. | 08-16-2012 |
20120218786 | METHOD AND APPARATUS FOR IMPLEMENTING AN UNREGULATED DORMANT MODE WITH AN EVENT COUNTER IN A POWER CONVERTER - An example power converter includes an energy transfer element, a switch, and a control circuit. The control circuit includes a drive signal generator and an unregulated dormant mode control circuit. The unregulated dormant mode control circuit renders dormant the drive signal generator thereby ceasing the regulation of the output by the drive signal generator when the energy requirement of the one or more loads falls below a threshold for more than a first period of time. The drive signal generator is unresponsive to changes in the energy requirements of the one or more loads when dormant. The unregulated dormant mode control circuit powers up the drive signal generator after a second period of time has elapsed, such that the drive signal generator is again responsive to changes in the energy requirement of the one or more loads after the second period of time has elapsed. | 08-30-2012 |
20120250368 | POWER SUPPLY CONTROLLER WITH INPUT VOLTAGE COMPENSATION FOR EFFICIENCY AND MAXIMUM POWER OUTPUT - A controller for regulating an output of a power supply includes a logic block and an oscillator. The logic block generates the drive signal to control switching of a power switch in response to a clock signal. The clock signal has a frequency that decreases responsive to a time period of the drive signal, where a decrease in the time period of the drive signal represents an increase in an input voltage of the power supply. The oscillator is coupled to generate the clock signal in response to a waveform having an amplitude swing. The oscillator alters the waveform in response to the time period of the drive signal. | 10-04-2012 |
20120326697 | Temperature Independent Reference Circuit - A temperature independent reference circuit includes first and second bipolar transistors with commonly coupled bases. First and second resistors are coupled in series between the emitter of the second bipolar transistor and ground. The first and second resistors have first and second resistance values, R | 12-27-2012 |
20130021014 | METHOD AND APPARATUS FOR IMPLEMENTING SLEW RATE CONTROL USING BYPASS CAPACITOR - An example circuit includes a capacitance circuit coupled between a first node and a second node. A regulator circuit is coupled to the capacitance circuit to regulate a supply voltage across the capacitance circuit with a charge current during a normal operation mode of the circuit. A slew rate control circuit is coupled to the capacitance circuit and the regulator circuit. The slew rate control circuit is coupled to set a slew rate of a change in voltage over change in time between the first and second nodes during a power up mode of the circuit. The slew rate control circuit includes a transistor coupled between the first and second nodes to shunt excess current from the charge current. | 01-24-2013 |
20130121040 | METHOD AND APPARATUS TO REGULATE AN OUTPUT VOLTAGE OF A POWER CONVERTER AT LIGHT/NO LOAD CONDITIONS - An example controller for a primary side control power converter includes a feedback circuit, a driver circuit, and an adjustable voltage reference circuit. The feedback circuit compares a feedback signal representative of a bias winding voltage of the power converter with a voltage reference. The driver circuit outputs a switching signal having a switching period to control a switch to regulate an output of the power converter in response to the feedback signal and enables or disables a switching period based on the output of the feedback circuit. The adjustable voltage reference circuit adjusts the voltage reference by a first amount in response to a first number of disabled switching periods indicating a first load condition at the output of the power converter and by a second amount in response to a second number of disabled switching periods indicating a second load condition at the output of the power converter. | 05-16-2013 |
20130215650 | VARIABLE TIME CLAMP FOR A POWER SUPPLY CONTROLLER - An example integrated circuit for use in a power supply includes a feedback terminal, a controller and a clamp. The feedback terminal is to be coupled to receive a feedback signal that is representative of a bias voltage across a bias winding of the power supply. The controller is to be coupled to control switching of a power switch included in the power supply in response to the feedback signal. The clamp is coupled to clamp the feedback terminal to a voltage for at least a time that the bias voltage is negative with respect to an input return of the power supply. | 08-22-2013 |
20140153297 | POWER SUPPLY CONTROLLER WITH INPUT VOLTAGE COMPENSATION FOR EFFICIENCY AND MAXIMUM POWER OUTPUT - An apparatus includes an ON/OFF controller for regulating an output of a switched mode power supply by selectively enabling current conduction by a power switch within enabled switching cycles and disabling current conduction by the power switch within disabled switching cycles. The controller includes a logic block and a time-to-frequency converter. The logic block generates a drive signal that enables the current conduction by the power switch within respective enabled switching cycles and disables the current conduction by the power switch within respective disabled switching cycles. The time-to-frequency converter generates a variable-frequency clock signal that defines durations of the switching cycles, where the time-to-frequency converter increases a duration of a switching cycle in response to a decrease in duration of current conduction by the power switch in a previously enabled switching cycle. | 06-05-2014 |
20140204624 | POWER CONVERTER CONTROLLER WITH MULTIPLE POWER SOURCES - A controller includes a bypass terminal, a first power circuit, a second power circuit, and a charging control circuit. The bypass terminal is to be coupled to a bypass capacitor coupled to a secondary side of an isolated power converter. The first power circuit is coupled to the bypass terminal and a first terminal to be coupled to a first node of the secondary side. The first power circuit transfers charge from the first terminal to the bypass terminal for storage on the bypass capacitor. The second power circuit is coupled to the bypass terminal and a second terminal to be coupled to a second node of the secondary side. The second power circuit transfers charge from the second terminal to the bypass terminal for storage on the bypass capacitor. The charging control circuit controls which of the first and second power circuits transfers charge to the bypass terminal. | 07-24-2014 |
20140204626 | RECEIVE CIRCUIT FOR USE IN A POWER CONVERTER - A receive circuit for use in a power converter controller includes a first amplifier coupled to receive an input pulse. A second amplifier is coupled to a first output of the first amplifier. The first output is coupled to be responsive to the input pulse and to a second output of the second amplifier. An output circuit is coupled to generate an output signal in response to the second output. | 07-24-2014 |
20140210446 | METHOD AND APPARATUS FOR IMPLEMENTING SLEW RATE CONTROL USING BYPASS CAPACITOR - An example circuit includes a capacitance circuit, a regulator circuit, and a slew rate control circuit. The capacitance circuit is coupled between a first node and a second node. The regulator circuit is coupled to the capacitance circuit to regulate a supply voltage across the capacitance circuit with a charge current during a normal operation mode of the circuit. The slew rate control circuit is coupled to the capacitance circuit and the regulator circuit. The slew rate control circuit is coupled to lower a slew rate of a change in voltage over change in time between the first and second nodes during a power up mode of the circuit. The slew rate control circuit includes a transistor coupled between the first and second nodes to shunt excess current from the charge current. | 07-31-2014 |
20140254202 | LOW THRESHOLD VOLTAGE COMPARATOR - A voltage comparator includes an amplifier coupled to receive an input signal at an amplifier input and generate an output signal at an amplifier output in response to the input signal. The amplifier includes a current generation circuit coupled to generate a first current flowing through a first branch and a second current flowing through a second branch. A first transistor has a first terminal coupled to the amplifier input and a second terminal coupled to the first branch. A second transistor has a third terminal coupled to the second branch, a fourth terminal coupled to a reference voltage. A second control terminal of the second transistor is coupled to the first control terminal. An output circuit is coupled to the amplifier output to generate a comparator output signal in response to the output signal. The amplifier output is coupled to the second branch. | 09-11-2014 |
20150062974 | Controller IC with Zero-Crossing Detector and Capacitor Discharge Switching Element - An integrated circuit (IC) for controlling the discharge of a capacitor coupled across first and second input terminals of a power converter circuit, wherein the first and second terminals for receiving an ac line voltage. The IC includes a switching element coupled across the first and second input terminals and a detector circuit. The detector circuit including first and second comparators that produce first and second output signals responsive to a zero-crossing event of the ac line voltage. The first and second output signals being used to generate a reset signal coupled to a timer circuit responsive to the zero-crossing event. When the reset signal is not received within a delay time period, the timer circuit outputs a discharge signal that turns the switching element on, thereby discharging the capacitor. | 03-05-2015 |
20150062980 | METHOD AND APPARATUS FOR IMPLEMENTING AN UNREGULATED DORMANT MODE WITH AN EVENT COUNTER IN A POWER CONVERTER - A control circuit for use in a power converter includes a drive signal generator coupled to generate a drive signal to control switching of a switch to regulate an output of the power converter. An event detection circuit is coupled to the drive signal generator to indicate if a switching period of one switching cycle of the drive signal exceeds a threshold switching period. An event counter circuit is coupled to the event detection circuit to render dormant the drive signal generator if the event detection circuit indicates a period of a switching cycle of the drive signal exceeds the threshold switching period for a threshold consecutive number of switching cycles. | 03-05-2015 |
20150357904 | MOSFET DRIVER WITH PULSE TIMING PATTERN FAULT DETECTION AND ADAPTIVE SAFE OPERATING AREA MODE OF OPERATION - A Safe Operating Area (SOA) adaptive gate driver for a switch mode power converter is disclosed. In response to a detection of a fault condition, the SOA adaptive gate driver may limit the peak current in a power transistor (e.g., power MOSFET) of the power converter by limiting the voltage applied to the gate of the power MOSFET or by limiting the current injected into the gate of the power MOSFET. The limited gate voltage or current may increase the margin between an SOA border and the turn-off locus of the drain voltage and current (V | 12-10-2015 |
Patent application number | Description | Published |
20090033307 | METHOD AND APPARATUS FOR A HIGH VOLTAGE POWER SUPPLY CIRCUIT - A control circuit for use in a power supply is disclosed. An example control circuit according to aspects of the present invention includes a signal generator coupled to generate an output signal to control switching of a power switch to be coupled to the control circuit. A feedback circuit is coupled to receive a feedback signal, which is representative of an output of the power supply during a feedback portion of an off time of the power switch. The signal generator generates the output signal in response to the feedback circuit to control a fraction of the feedback portion of the off time of the power switch that the feedback signal is above a threshold and another fraction of the feedback portion of the off time of the power switch that the feedback signal is below the threshold. | 02-05-2009 |
20090033393 | METHOD AND APPARATUS FOR REGULATING A DIODE CONDUCTION DUTY CYCLE - A power converter control method and apparatus is disclosed. A control circuit for use in a power converter according to aspects of the present invention includes a clock signal generator coupled to generate a clock signal to control switching of a power switch to be coupled to the control circuit. Feedback circuitry is coupled to receive a feedback signal, which is representative of an output of a power converter during a feedback portion of an off time of the power switch. The feedback circuitry is coupled to respond to the feedback signal to control the clock signal generator to regulate a duty cycle of the feedback portion of the off time of the power switch as a proportion of a total power switch switching cycle period. | 02-05-2009 |
20090091309 | OFF-LINE CONVERTER WITH DIGITAL CONTROL - A regulation circuit for use in DC to DC converter is disclosed. One such regulation circuit includes a feedback circuit to be coupled an energy transfer element output to receive a feedback signal to indicate whether the energy transfer element output is above or below a threshold level. A control circuit is included that is to be coupled to a switch that is coupled to an energy transfer element input. The control circuit is further coupled to the feedback circuit to generate a drive signal to control the switch to regulate the energy transfer element output to approximately the threshold level. The control circuit is to maintain an on-time of a current cycle of the drive signal and not allow an on-time of a next cycle of the drive signal in response to the energy transfer element output rising above the threshold level. | 04-09-2009 |
20090310389 | METHOD AND APPARATUS PROVIDING A MULTI-FUNCTION TERMINAL FOR A POWER SUPPLY CONTROLLER - A method for controlling a power supply is disclosed. An example method includes deactivating the power supply in response to a first current through a first terminal of a power supply controller falling below a first threshold value. The power supply is activated in response to the first current through the first terminal rising above a second threshold value. Deactivating the power comprises causing a power switch coupled to a primary winding of the power supply not to receive a switching waveform for more than one cycle until the power supply is activated. | 12-17-2009 |
20110085360 | METHOD AND APPARATUS PROVIDING A MULTI-FUNCTION TERMINAL FOR A POWER SUPPLY CONTROLLER - A power supply controller circuit is disclosed. An example power supply controller circuit includes a control circuit coupled to generate a switching waveform to be used to regulate an output of a power supply. A current input circuit is coupled to receive a current representative of an input of the power supply. The current input circuit is to generate a sense signal in response to the current representative of the input of the power supply. A first comparator is coupled to the current input circuit to receive the sense signal. The first comparator coupled to generate a first signal in response to the sense signal being above a first threshold. An enable/disable logic circuit is coupled to the first comparator. The enable/disable logic circuit is coupled to deactivate the control circuit in response to the first signal. | 04-14-2011 |
20110199795 | METHOD AND APPARATUS FOR A HIGH VOLTAGE POWER SUPPLY CIRCUIT - A power converter is disclosed. An example power converter includes an energy transfer element coupled between a power converter input and a power converter output. A power switch is coupled to the energy transfer element. A control circuit is coupled to receive a feedback signal representative of the power converter output during a feedback portion of an off time of the power switch. The control circuit is coupled to generate an output signal in response to the feedback signal. The output signal is coupled to be received by the power switch to control switching of the power switch to control a fraction of the feedback portion of the off time of the power switch that the feedback signal is above a threshold and another fraction of the feedback portion of the off time of the power switch that the feedback signal is below the threshold. | 08-18-2011 |
20110228568 | OFF-LINE CONVERTER WITH DIGITAL CONTROL - A circuit for regulating the level at a power converter output is disclosed. An example circuit includes an input for receiving a feedback signal. The feedback signal has a first feedback state that represents a level that is above a threshold level and a second feedback state that represents a level that is below the threshold level. An oscillator is included that provides an oscillation signal that cycles between two states. A switch having a first terminal, a second terminal and a control terminal are also included. The switch is operable to couple or decouple the first terminal and the second terminal in response to a control signal received at the control terminal. The control signal is responsive to the oscillation signal and to the first and second feedback states. | 09-22-2011 |
20110255313 | METHOD AND APPARATUS FOR REGULATING A DIODE CONDUCTION DUTY CYCLE - A power converter control method and apparatus is disclosed. An example control circuit includes a clock signal generator coupled to generate a clock signal to control switching of a power switch to be coupled to the control circuit. A feedback circuit is coupled to receive a feedback signal which is representative of an output of a power converter during a duration of a feedback portion of an off time of the power switch. The feedback circuit is coupled to respond to the feedback signal to control the clock signal generator to regulate a ratio of the duration of the feedback portion of the off time of the power switch divided by a duration of a total power switch switching cycle period. | 10-20-2011 |
20120113690 | METHOD AND APPARATUS FOR A HIGH VOLTAGE POWER SUPPLY CIRCUIT - A power switch is switched to regulate an output of a power converter. A feedback signal representative of a power converter output during a feedback portion of an off time of the power switch is received. The feedback signal is above a threshold during a fraction of the feedback portion of the off time of the power switch and the feedback signal is below the threshold during another fraction of the feedback portion of the off time of the power switch. The fractions of the feedback portion of the off time of the power switch are regulated in response to the feedback signal by controlling the switching the power switch. | 05-10-2012 |
20120280670 | OFF-LINE CONVERTER WITH DIGITAL CONTROL - A power converter includes an input and an output. A regulation circuit is coupled between the power converter input and the power converter output. The regulation circuit is coupled to receive a feedback signal representative of the power converter output. The feedback signal has a first feedback state that represents a level at the power converter output that is above a threshold level and a second feedback state that represents a level at the power converter output that is below the threshold level. An oscillator is included in the regulation circuit that provides an oscillation signal that cycles between two states. The regulation circuit is coupled to be responsive to the oscillation signal and to a change between the first and second feedback states to enable or disable a flow of energy from the power converter input to the power converter output. | 11-08-2012 |
Patent application number | Description | Published |
20090086753 | METHOD AND SYSTEM FOR EXPLOITING SPARE LINK BANDWIDTH IN A MULTILANE COMMUNICATION CHANNEL - A system for encoding data in a multilane communication channel may include at least one processor operable to generate, from existing control characters in a character set, expanded control characters utilized for controlling the data in each lane of the multilane communication channel. Each lane of the multilane communication channel may transport the data in a similar direction. The at least one processor is also operable to control at least one of the lanes of the multilane communication channel using at least one of the generated control characters. If a first control character of the existing control characters is a start-of-packet control character, the at least one processor is then operable to select a second control character from any other of the generated expanded control characters, and to indicate a start of a packet using the selected second control character for at least one of the lanes. | 04-02-2009 |
20090201927 | SYSTEM AND METHOD FOR COMMUNICATING USING A MULTISERVER PLATFORM - Aspects of the invention include receiving a first packet from a first of a plurality of blade servers at a first data rate and determining a second blade server that may receive the first packet. Data responsive to the received first packet may be transferred to the second blade server at a negotiated first data rate. A second packet comprising at least a portion of the first received packet may be transferred to the second blade server at the negotiated data rate. At least a portion of the first received packet may be transferred to at least the second blade server via a common bus. In another aspect of the invention, at least a third packet may be received from a network at a second data rate. Data responsive to the third packet may be transferred to at least a third blade server at a newly negotiated data rate. | 08-13-2009 |
20100310067 | Method and System for Providing Synchronous Running Encoding and Encryption - Aspects of the invention provide a method and system for coding information in a communication channel. More particularly, aspects of the invention provide an method and system for synchronous running encryption and/or encoding and corresponding decryption and decoding in a communication channel or link. Aspects of the method may include encoding and/or encrypting a first data using a first or second encoding table and/or a first or second encryption table. The method may indicate which one of the first or second encoding tables or which one of the first or second encryption tables were utilized for encoding and/or encrypting the said first data. The encoded and/or encrypted first data may subsequently be transferred downstream and decoded by synchronous decoder/decryptor using a corresponding decoding and/or decryption table. The corresponding decoding and/or decryption table may be determined based on the indicated first and/or second encoding and/or encrypting tables | 12-09-2010 |
20110066729 | METHOD AND SYSTEM TO PROVIDE BLADE SERVER LOAD BALANCING USING SPARE LINK BANDWIDTH - A method for processing network information in a multi-server platform is disclosed and includes receiving by a blade server manager, capacity utilization information embedded in spare link bandwidth from a plurality of blade servers operably coupled to the blade server manager. Digital information received on a digital communication link may be forwarded to one of the plurality of blade servers. The blade servers may be selected based on the received capacity utilization information. The capacity utilization information may include blade server work load capacity, blade server power saving capacity, blade server CPU percent utilization, and/or data representing blade server interrupt utilization. The blade server manager may be operably coupled to an Ethernet network and/or an external network. | 03-17-2011 |
20110110236 | Multiple Logical Channels for Use in Network Devices - A method for establishing a virtual channel between network devices is disclosed. In the case of a local network device establishing a virtual channel with a remote network device, a virtual channel request message is sent from the local network device to the remote network device. A virtual channel acknowledgement message and a remote capability list are received and a virtual channel resume message and a local capability list are sent. The virtual channel is then enabled. In the case of a remote network device establishing a virtual channel with a local network device, a virtual channel request message is received from a local network device by a remote network device. A virtual channel acknowledgement message and a remote capability list are sent and a virtual channel resume message and a local capability list are received. The virtual channel is then enabled. | 05-12-2011 |
20130301410 | Multiple Logical Channels for Use in Network Devices - A method for establishing a virtual channel between network devices is disclosed. In the case of a local network device establishing a virtual channel with a remote network device, a virtual channel request message is sent from the local network device to the remote network device. A virtual channel acknowledgement message and a remote capability list are received and a virtual channel resume message and a local capability list are sent. The virtual channel is then enabled. In the case of a remote network device establishing a virtual channel with a local network device, a virtual channel request message is received from a local network device by a remote network device. A virtual channel acknowledgement message and a remote capability list are sent and a virtual channel resume message and a local capability list are received. The virtual channel is then enabled. | 11-14-2013 |
20140129732 | Integrated Multiserver Platforms - Disclosed are various embodiments for multiserver platforms. In some embodiments, a packet from an external network is received in a first switch. The first switch is in a first multiserver platform in which multiple servers communicate with the external network via the first switch. The first switch transmits the packet to a central switch to forward the packet to a second switch in a second multiserver platform. The central switch communicates with the external network via the first switch in the multiserver platform. | 05-08-2014 |
Patent application number | Description | Published |
20090320789 | Multi Fuel Co Injection System for Internal Combustion and Turbine Engines - An improved multi-fuel supply and co-injection system and method for powering internal combustion and turbine engines, whereby various combinations of fuels, both liquid and gaseous, may be mixed together and fed into the system, under the real-time control of a microprocessor responding to a variety of sensors and acting on a variety of control devices, all working together in a manner designed to enhance the utilization of the thermal content of the various fuels, and in particular to enhance the combustion efficiency and increase the power output while decreasing the consumption of fuel, calculated both by quantity and by cost and whereby the liquid fuel lubricates the moving parts of the injection system. | 12-31-2009 |
20110023853 | Homogenizing Fuel Enhancement System - A homogenizing fuel system involves at least one circulation loop existing outside of the injection system for continuously circulating and maintaining the homogeneity of a multi-fuel mixture apart from any demands by or delivery to the engine's injection system (whether a direct injection fuel gallery or a common rail), and at least one infusion tube configured within the at least one circulation loop for providing a volumetric expansion wherein the fuel mixture is able to slow and more sufficiently mix and thereby become relatively more homogeneous. | 02-03-2011 |
20110044828 | COMPRESSION APPARATUS - A compression apparatus for compressing a fluid, the apparatus having a frame and a motor mounted to the frame, the improvement comprising a drive mechanism installed on the frame so as to be driven by the motor and at least one piston-cylinder unit operably connected to the drive mechanism, the piston-cylinder unit having a cylinder, a piston slidably installed within the cylinder, and a piston rod interconnecting the piston and the drive mechanism so as to shift the piston up and down within the cylinder. | 02-24-2011 |
20110061622 | FUEL COMPOSITION - A fuel composition for use in an internal combustion engine comprising at least one liquid fuel and at least one gaseous fuel, the gaseous fuel having an effective solubility in the liquid fuel at twenty degrees Celsius and one atmosphere in the range of 0.0000001 g/kg to 0.0002 g/kg, wherein dispersion of the gaseous fuel within the liquid fuel before introduction of the fuel composition to the injection system of the engine is such that molecules of the liquid and gaseous fuels are substantially equidistant one from another, liquid from liquid and gas from gas, within a variance preferably of no more than one hundred percent (±100%), more preferably of no more than fifty percent (±50%), and most preferably of no more than twenty-five percent (±25%), whereby the fuel composition is substantially homogeneous so as to promote the atomization of the liquid fuel and thus improve combustion. | 03-17-2011 |
20120186560 | HOMOGENIZING FUEL ENHANCEMENT SYSTEM - A homogenizing fuel enhancement system involves at least one circulation loop existing outside of the injection system for continuously circulating and maintaining the homogeneity of a multi-fuel mixture apart from any demands by or delivery to the engine's injection system (whether mechanical injection or a common rail), and at least one infusion tube configured within the at least one circulation loop for providing a volumetric expansion wherein the fuel mixture is infused and thereby rendered more homogeneous. | 07-26-2012 |
20130269243 | FUEL COMPOSITION - A fuel composition for use in an internal combustion engine comprising at least one liquid fuel and at least one gaseous fuel, the gaseous fuel having an effective solubility in the liquid fuel at twenty degrees Celsius and one atmosphere in the range of 0.0000001 g/kg to 0.0002 g/kg, wherein dispersion of the gaseous fuel within the liquid fuel before introduction of the fuel composition to the injection system of the engine is such that molecules of the liquid and gaseous fuels are substantially equidistant one from another, liquid from liquid and gas from gas, within a variance preferably of no more than one hundred percent (±100%), more preferably of no more than fifty percent (±50%), and most preferably of no more than twenty-five percent (±25%), whereby the fuel composition is substantially homogeneous so as to promote the atomization of the liquid fuel and thus improve combustion. | 10-17-2013 |
20150267626 | Homogenizing Fuel Enhancement System and Gas Processor for Use Therein - A fuel enhancement system and method for supplying an engine with a pressurized homogenized mixture of a liquid fuel and a gaseous component. In one embodiment the system comprises a controller; a gaseous component flow control device, a homogenization system, and a gas processor. In another embodiment, the system comprises a controller; a gaseous component flow control device, a device for generating signals indicative of liquid fuel flow, and a homogenization system. Particular embodiments of the gas processor and device for generating signals indicative of liquid fuel flow are also disclosed. | 09-24-2015 |
Patent application number | Description | Published |
20090064329 | Zero-hour quarantine of suspect electronic messages - The zero-hour quarantine comprises a tool for flagging potentially harmful messages/files prior to having an anti-virus signature published for a particular virus. The suspect file is sent to the zero-hour quarantine and periodically scanned, giving time for creation of a signature file that would then detect the virus. An example method may include receiving and examining a message for attributes indicative of its undesirability, and assigning a threat score to the message. The method may comprise disposing of the message by comparing the threat score to first and second thresholds, and the message sent to a permanent quarantine if the threat score passes the first threshold. The message is sent to the zero-hour quarantine if the assigned threat score does not pass the second threshold but passes the second threshold, or is delivered to the recipient if the assigned threat score does not pass the first or second threshold. | 03-05-2009 |
20100088765 | SYSTEM AND METHOD FOR FILTERING ELECTRONIC MESSAGES USING BUSINESS HEURISTICS - Disclosed are systems and methods for use in filtering electronic messages using business heuristics. In one aspect, a method includes determining whether the electronic message is associated with a desirable business, and adjusting the likelihood of delivering the electronic message to an intended recipient of the message if the electronic message is determined to be associated with the desirable business. In a more specific embodiment, the method further includes assigning a spam-score to the electronic message based on a likelihood that the electronic message is not unwanted by the intended recipient, blocking delivery of the electronic message to the intended recipient when the spam-score does not cross an overall threshold, and delivering the electronic message to the intended recipient based on the adjusted likelihood when the electronic message is determined to be associated with the desirable business. | 04-08-2010 |
20120030302 | ELECTRONIC MESSAGE SOURCE REPUTATION INFORMATION SYSTEM - Disclosed herein are filtering systems and methods that employ an electronic message source reputation system. The source reputation system maintains a pool of source Internet Protocol (IP) address information, in the form of a Real-Time Threat Identification Network (“RTIN”) database, which can provide the reputation of source IP addresses, which can be used by customers for filtering network traffic. The source reputation system provides for multiple avenues of access to the source reputation information. Examples of such avenues can include Domain Name Server (DNS)-type queries, servicing routers with router-table data, or other avenues. | 02-02-2012 |
20130340028 | Secure web container for a secure online user environment - Disclosed herein are systems and methods that allow for secure access to websites and web-based applications and other resources available through the browser. Also described are systems and methods for invocation of a secure web container which may display data representative of a requesting party's application at a user's machine. The secure web container is invoked upon receipt of an API call from the requesting party. Thus, described in the present specification are systems and methods for constructing and destroying private, secure, browsing environments (a secure disposable web container), insulating the user and requesting parties from the threats associated with being online for the purposes of providing secure, policy-based interaction with a requesting party's online services. | 12-19-2013 |
20150058923 | Secure web container for a secure online user environment - Disclosed herein are systems and methods that allow for secure access to websites and web-based applications and other resources available through the browser. Also described are systems and methods for invocation of a secure web container which may display data representative of a requesting party's application at a user's machine. The secure web container is invoked upon receipt of an API call from the requesting party. Thus, described in the present specification are systems and methods for constructing and destroying private, secure, browsing environments (a secure disposable web container), insulating the user and requesting parties from the threats associated with being online for the purposes of providing secure, policy-based interaction with a requesting party's online services. | 02-26-2015 |