Patent application number | Description | Published |
20080259920 | Method and apparatus for establishing virtual resilient packet ring (RPR) subrings over a common communications path - A method and corresponding apparatus allows multiple virtual switches in a physical switch to share one physical Resilient Packet Ring (RPR) in an RPR network. Modules in the multiple virtual switches add multicast information to traffic to direct the traffic along a common path to other physical switches on the ring, and modules in the virtual switches inspect traffic to determine whether the traffic is directed to the respective virtual switch. Multiple virtual RPR subrings are made available in a single physical ring, increasing usefulness of virtual switches formerly only able to support multiple tributary connections to other networks but not able to share a single ring network communications path. Sharing a single communications path increases overall network bandwidth, and at least one implementation allows for spatial reuse. | 10-23-2008 |
20080260386 | RECONFIGURABLE OPTICAL ADD DROP MULTIPLEXER CORE DEVICE, PROCEDURE AND SYSTEM USING SUCH DEVICE, OPTICAL LIGHT DISTRIBUTOR, AND COUPLING-RATIO ASSIGNING PROCEDURE - A reconfigurable optical add drop multiplexer core device includes a light distributor, a light combiner, and first and second sets of add and drop ports. The light distributor is configured to receive an optical signal along a primary input of the reconfigurable optical add drop multiplexer core device and to distribute the received optical signal along a plurality of subtending outputs. The light combiner is configured to receive optical signals along a plurality of subtending inputs, to combine the received optical signals into a combined signal, and to output the combined signal. The add and drop ports in the first set function as add and drop ports, respectively, and the add and drop ports in the second set function as both add and drop ports, respectively, and as express ports connectable to another reconfigurable optical add drop multiplexer core device. | 10-23-2008 |
20120106970 | RECONFIGURABLE OPTICAL ADD DROP MULTIPLEXER CORE DEVICE, PROCEDURE AND SYSTEM USING SUCH DEVICE, OPTICAL LIGHT DISTRIBUTOR, AND COUPLING-RATIO ASSIGNING PROCEDURE - A reconfigurable optical add drop multiplexer core device includes a light distributor, a light combiner, and first and second sets of add and drop ports. The light distributor is configured to receive an optical signal along a primary input of the reconfigurable optical add drop multiplexer core device and to distribute the received optical signal along a plurality of subtending outputs. The light combiner is configured to receive optical signals along a plurality of subtending inputs, to combine the received optical signals into a combined signal, and to output the combined signal. The add and drop ports in the first set function as add and drop ports, respectively, and the add and drop ports in the second set function as both add and drop ports, respectively, and as express ports connectable to another reconfigurable optical add drop multiplexer core device. | 05-03-2012 |
Patent application number | Description | Published |
20080278239 | POWER AMPLIFIER WITH CONTROLLED OUTPUT POWER - The invention includes a power amplifier with an amplifier core including parallel amplifier cells, a replica cell made of one amplifier cell similar to those of the amplifier core, a power controller to select a combination of amplifier cells to activate, a regulator to fix the top voltage of the replica cell to a reference voltage, a voltage generator to provide the voltage reference to the regulator, a current generator to provide a reference current through the replica cell, and a drive unit controlled by the regulator output to drive the combination of amplifier cells, so that each selected combination of activated cells defines a predetermined attenuation level of power amplifier output signal so that it is attenuated in a stepwise manner. | 11-13-2008 |
20120256690 | POWER AMPLIFIER CIRCUIT WITH MEANS FOR TUNING WAVE SHAPE OF ASK RF SIGNAL ENVELOPE, AND METHOD FOR IMPLEMENTING THE POWER AMPLIFIER CIRCUIT - A power amplifier circuit can be linked to an antenna arrangement of a communication system for transmission of ASK RF data signals. The power amplifier circuit includes an amplifier core with several cascode amplifier cells in parallel. Each cascode amplifier cell is composed of three NMOS transistors in triode mounting between an output terminal connected to the antenna arrangement, and an earth terminal. A first transistor of each cascode amplifier cell is controlled by a carrier frequency signal, whereas a second transistor of each cascode amplifier cell is controlled by a smoothing control loop in order to modulate data to be transmitted on carrier frequency by amplitude shift keying. The smoothing control loop is provided for generating an increasing gate voltage for the second transistors on the basis of an increasing current ramp from a first minimum current value to a second maximum current value during a “0” to “1” data transition. The smoothing control loop is provided for generating a decreasing gate voltage for the second transistors on the basis of a decreasing current ramp from the second maximum current value to the first minimum current value during a “1” to “0” data transition for shaping the envelope of ASK RF data signals to be transmitted. | 10-11-2012 |
20130207691 | METHOD FOR PERFORMING A TRI-STATE COMPARISON OF TWO INPUT SIGNALS IN A WINDOW COMPARATOR CIRCUIT, AND WINDOW COMPARATOR CIRCUIT FOR IMPLEMENTING THE METHOD - A method performs a comparison of input signals in a window comparator circuit. In a first phase, input, ground and offset voltages are stored on capacitors. A comparison is performed between a first adapted input voltage and a second adapted input voltage added to an adapted offset voltage, to provide a first output signal. In a second phase, the voltages are stored on the capacitors in a different manner. A comparison is performed between the first adapted input voltage added to the adapted offset voltage and the second adapted input voltage, to provide a second output signal. Finally, a control of the state of the output signals is performed to determine if the comparison is in a low or high state if the output signals have a same low or high output level, or in an intermediate state if the output signals have a different output level. | 08-15-2013 |
20140169417 | AUTOMATIC GAIN CONTROL UNIT FOR A LOW POWER RECEIVER OR TRANSCEIVER - The automatic gain control unit for a radiofrequency receiver includes a first current source for charging a storage capacitor by a first current, four comparators for comparing on the lower side an in-phase positive intermediate signal, an in-phase negative intermediate signal, a quarter-phase positive intermediate signal, a quarter-phase intermediate signal with a first reference threshold to a high amplitude level of the intermediate signals. Each comparator controls a MOS transistor connected in series between a second current source and the storage capacitor in order to discharge the storage capacitor when each transistor is in a conductive state. A bi-stable trigger element is connected to the storage capacitor and to provide an AGC signal depending on the voltage level on the storage capacitor for attenuating or not the gain of the low noise amplifier or of a mixer unit amplifier of the receiver. | 06-19-2014 |
Patent application number | Description | Published |
20100300377 | WATER HEATER APPARATUS WITH DIFFERENTIAL CONTROL - An apparatus for a water heater is configured to control heating operation of a water heater to maintain a desired water temperature. The various embodiments comprise a sensor that provides an output indicative of the sensed temperature of water in a water heater, and a controller in communication with the sensor. The controller is operable to initiate a present call for heat where the sensed temperature is a predetermined amount below a set-point temperature. The controller is also configured to determine whether a prior call for heat occurred within a predetermined elapsed time period preceding the present call for heat, and to respond thereto by delaying the start of heating operation in the present call for heat until one of a predetermined time period or a predetermined sensed temperature change has occurred. | 12-02-2010 |
20120118989 | SMART ENERGY CONTROLLED WATER HEATER - A control module for a water heater includes a switching module that receives a voltage supply and outputs the voltage supply to the water heater. The water heater includes an electrical junction box that receives the voltage supply. A communication module communicates with at least one of an energy meter and an energy network external to the water heater and the control module, and receives information from the at least one of the energy meter and the energy network. The control module is mounted on the water heater and the voltage supply passes through or adjacent to the control module. The control module determines an operating characteristic of the water heater based on the voltage supply and selectively actuates the switching module to turn on and turn off the voltage supply to the water heater in response to the operating characteristic and the information. | 05-17-2012 |
20130193221 | WATER HEATER CONTROL USING EXTERNAL TEMPERATURE SENSOR - A system for controlling a water heater that operates according to a voltage supply includes a temperature sensor, mounted on at least one of a temperature and pressure (T&P) valve of the water heater and a hot water line of the water heater, that generates a temperature signal corresponding to a first temperature of the at least one of the T&P valve and the hot water line. A control module mounted on the water heater includes a switching module that receives the voltage supply and outputs the voltage supply to the water heater. The voltage supply passes at least one of through and adjacent to the control module. The control module determines a second temperature of water within the water heater based on the temperature signal and selectively actuates the switching module to turn on and turn off the voltage supply to the water heater based on the second temperature. | 08-01-2013 |
20130200168 | SMART ENERGY CONTROLLED WATER HEATER - A smart energy control module for a water heater includes a switching module that receives a voltage supply and outputs the voltage supply to the water heater. A communication module communicates with at least one of an energy meter and an energy network external to the water heater and the control module. The control module is mounted on the water heater. The voltage supply passes at least one of through and adjacent to the control module. The control module determines at least one operating characteristic of the water heater based on the voltage supply and selectively actuates the switching module to turn on and turn off the voltage supply to the water heater in response to the operating characteristic and information received from the at least one of the energy meter and the energy network. | 08-08-2013 |
Patent application number | Description | Published |
20100274394 | Climate Control Head With Fuel Economy Indicator - A climate control system having a control head including a display providing at least one comfort level indicator and a fuel economy indicator is provided. The comfort level indicator displays a plurality of comfort level settings corresponding to relative thermal comfort in all weather conditions. Each comfort level setting corresponds to a range of temperatures so that once a comfort range is obtained, the climate control system will be reluctant to consume additional energy, thereby maintaining or improving the current fuel economy state. The fuel economy indicator provides for direct communication of the impact of comfort level settings on fuel economy. | 10-28-2010 |
20100286830 | Climate Control System And Method For Optimizing Energy Consumption Of A Vehicle - A climate control system and method for optimizing energy consumption in a hybrid electric vehicle (HEV) is provided. By varying evaporator temperatures based on occupant settings and environmental conditions, electric compressor speed can be optimized to provide the necessary cooling capacities resulting in energy savings. Determining the impact that increasing or decreasing engine cooling fan speed has on the overall energy consumption of the climate control system without affecting target discharge air temperature provides for energy saving opportunities. Optimizing energy consumption according to the provided strategy provides for improved fuel economy without sacrificing passenger comfort. | 11-11-2010 |
20110082594 | Climate Control System And Method For Optimizing Energy Consumption of A Vehicle - A climate control system includes a control head having a warmer/cooler temperature control for providing relative thermal comfort. A thermal comfort rating (TCR) corresponding to a range of passenger cabin temperatures is determined based upon a comfort level selection by an occupant using the control head. A control strategy employs look-up tables corresponding to the TCR to determine the speed of an electric compressor and the position of a temperature control blend door. The strategy provides for a relatively fast ramp down to a minimum compressor speed to improve fuel economy while maintaining a relative level of thermal comfort. | 04-07-2011 |
20120239251 | CLIMATE CONTROL SYSTEM AND METHOD FOR OPTIMIZING ENERGY CONSUMPTION OF A VEHICLE - A climate control system and method for optimizing energy consumption in a hybrid electric vehicle (HEV) is provided. By varying evaporator temperatures based on occupant settings and environmental conditions, electric compressor speed can be optimized to provide the necessary cooling capacities resulting in energy savings. Determining the impact that increasing or decreasing engine cooling fan speed has on the overall energy consumption of the climate control system without affecting target discharge air temperature provides for energy saving opportunities. Optimizing energy consumption according to the provided strategy provides for improved fuel economy without sacrificing passenger comfort. | 09-20-2012 |