Patent application number | Description | Published |
20080239765 | System and Method for a Bridgeless Power Supply - A system and method for a bridgeless power supply is disclosed. The bridgeless power supply includes a digital control module that controls a first switch, a second switch, and a transistor, thereby the bridgeless power supply rectifies an alternating current (AC) variable input voltage and regulates a direct current (DC) output voltage. The digital control module applies a first and second control signal to the first and second switches thereby rectifying and regulating the AC variable input voltage. Additionally, the digital control module provides a high frequency and constant duty cycle third control signal to the transistor in series with an output transformer of the bridgeless power supply device, to assure primary-to-secondary isolation. | 10-02-2008 |
20090080222 | System and Method for Power Saving Conversion Topology in Switch Mode Power Supplies - A power supply includes an input filter and rectifier module, a digital control module, and a converter module. The input filter and rectifier module is configured to rectify an input voltage. The digital control module is adapted to prevent a potential saturation of a transformer by setting a maximum allowable duty cycle for a control signal transmitted to the transistor based on an input voltage. The digital control model is further adapted to reduce switching losses in the power supply by setting the control signal switching frequency, based on the input voltage. The converter module is configured to convert the input voltage into a direct current output voltage based upon the control signal. | 03-26-2009 |
20090174386 | Power Supply Start-Up and Brown-Out Inrush Management Circuit - A power supply device including a diode bridge, a converter module, and an inrush control module. The diode bridge is adapted to rectify an input voltage. The converter module is coupled to the diode bridge and is adapted to convert the input voltage into a direct current regulated output voltage. The inrush control module is connected to the diode bridge and is adapted to gradually activate a transistor and to limit an inrush current peak value based upon a zero crossing being detected in the input voltage. A method for limiting the inrush current peak value is also disclosed. | 07-09-2009 |
20090251927 | Phase Shifted DC-DC Converter with Improved Efficiency at Light Load - A device including a full bridge, a half bridge, a first inductor, and a second inductor. The full bridge has a first pair of transistors being activated when a load applied to the device is above a predetermined level and deactivated when the load applied to the device is below the predetermined level, and a second pair of transistors being continuously activated. The half bridge has a third pair of transistors that are activated when the load applied to the device is below the predetermined level and deactivated when the load applied to the device is above the predetermined level. The first and second inductors are connected between the outputs of the full and half bridges are adapted to cooperate with each other to provide a zero voltage switching of the device at a light load. The first and third pairs of transistors are activated at different times. | 10-08-2009 |
20090295347 | System and Method for Reducing an Input Current Ripple in a Boost Converter - A device comprises a first power cell, a second power cell, a power factor correction module, a boost inductor switch circuit, and an output. The first and second power cells are configured to provide first and second currents in response to an input voltage. The power factor correction module is configured to continuously activate and deactivate the first and second power cells based on an input current level, on the input voltage, and on an output voltage. The boost inductor switch circuit is configured to disable the first power cell in response to the input current level being below a predetermined level. The output is configured to provide the output voltage based on the first and second currents when the input current level is above the predetermined level, and to provide the output voltage based on the second current when the input current level is below the predetermined level. | 12-03-2009 |
20100052641 | System and Method for Improving Efficiency of a Power Factor Correction Boost Pre-Regulator - A power supply device comprises a driver circuit, a transistor switch, and a first transistor. The driver circuit is configured to provide a stable driving signal and a floating driving signal. The transistor switch has a first terminal, a second terminal connected to a first terminal of the driver circuit, and a third terminal connected to a second terminal of the driver circuit, and is configured to prevent a reverse current based on the floating driving signal. The first transistor has a first current electrode connected to the first terminal of the transistor switch, a second current electrode connected to the first voltage reference, and a control electrode connected to the third terminal of the driver circuit, and is configured to activate and deactivate based on the stable driving signal, and further configured to regulate an input voltage to a substantially constant direct current output voltage. | 03-04-2010 |
20130223118 | System and Method for Reducing an Input Current Ripple in a Boost Converter - A device comprises a first power cell, a second power cell, a power factor correction module, a boost inductor switch circuit, and an output. The first and second power cells are configured to provide first and second currents in response to an input voltage. The power factor correction module is configured to continuously activate and deactivate the first and second power cells based on an input current level, on the input voltage, and on an output voltage. The boost inductor switch circuit is configured to disable the first power cell in response to the input current level being below a predetermined level. The output is configured to provide the output voltage based on the first and second currents when the input current level is above the predetermined level, and to provide the output voltage based on the second current when the input current level is below the predetermined level. | 08-29-2013 |
Patent application number | Description | Published |
20100071042 | SELECTION AND APPLICATION OF ROLES AND SYSTEMS BASED ON USERNAME AND LAYOUT ID - In one embodiment a computing system comprises one or more processors, a display device coupled to the computing system, and a memory module communicatively connected to the one or more processors. The memory module comprises logic to receive, in a connection server, a service request from a user via a remote connection client, wherein the service request comprises at least one of a user credential, a connection client identifier, and a layout identifier, authenticate, in the connection server, the user credential and the connection client identifier, retrieve, in the connection server, a user profile associated with the user, a connection client layout associated with the layout identifier, connection data for at least one remote system, and a policy associated with the user profile, and transmit the user profile, the connection client layout, a remote system and the connection data for a remote system and a policy associated with the user profile from the connection server to the remote connection client. | 03-18-2010 |
20100082815 | Assignment And Failover Of Resources - Included are embodiments for assignment and failover of resources. More specifically, at least one embodiment of a method includes assigning, to a user of an access device ( | 04-01-2010 |
20110254667 | STRING MATERIAL WITH RADIO FREQUENCY IDENTIFICATION TAGS - A product includes a string material; and a series of Radio Frequency Identification (RFID) tags secured along a length of the string material. Each RFID tag has an identifier stored therein for transmission to identify that RFID tag and a path along the string material to a reader. A method includes laying a string material along a path through an infrastructure, the string material comprising Radio Frequency Identification (RFID) tags placed at intervals along a length of the string material. Each said RFID tag has an identifier stored therein for transmission to identify that RFID tag to a reader. The path is selected to correspond with a path to be followed through the infrastructure by a computer-driven mobile device. | 10-20-2011 |
20120254447 | METHODS, SYSTEMS AND ARTICLES OF MANUFACTURE TO RESUME A REMOTE DESKTOP SESSION - Example methods, systems and articles of manufacture to resume remote desktop sessions are disclosed. A disclosed example method to resume a remote desktop session with a first computing device includes sending a query packet containing a first value representing a user identifier from a second computer device to a third computing device, receiving a response packet containing a second value representing the first computing device from the third computing device, and resuming at the second computing device the remote desktop session with the first computing device using the value. | 10-04-2012 |
20130010418 | MODULAR, ALL-IN-ONE COMPUTING DEVICE - An exemplary embodiment of the present invention provides a modular, all-in-one computing device. The modular, all-in-one computing device includes a computer module comprising a processor, a memory, a storage system, and an interface, wherein the computer module does not include a keyboard or a video display. The modular, all-in-one computing device also includes a display unit, configured to support the computer module, provide power to the computer module, and interface with the computer module. | 01-10-2013 |