Patent application number | Description | Published |
20080320582 | REAL-TIME INDUSTRIAL FIREWALL - Providing for employing a real time firewall to secure components of an automation control network from unauthorized communication to or from such components is disclosed herein. A monitoring component can inspect at least a portion of an instance of communication directed toward or originating from a component of the automation control network. Such inspection can, e.g., be a deep packet inspection based on information received from a communication request and/or response protocol. A filtering component can selectively admit or deny propagation of the instance of communication based on the inspection and a predetermined security criterion. In such a manner, the subject innovation can provide for limited access to network components from office network machines and for securing components of an automation control network from influence by unauthorized entities. | 12-25-2008 |
20100091524 | Electronic Power Protection Circuit And Applications Thereof - An electric power protection circuit connected in series to a secondary side circuit of a transformer in a switch mode power supply includes a voltage/current limiting device to get an electric power signal output from the secondary side circuit of the transformer that goes through current and voltage limitation before being output and a constant current/voltage controller to get the electric power signal which has the current and voltage limited by the voltage/current limiting device. The electric power signal further is undergone constant voltage/current control to achieve voltage overshoot protection. | 04-15-2010 |
20100103705 | SHORT CIRCUIT PROTECTION CIRCUIT FOR A PULSE WIDTH MODULATION (PWM) UNIT - A short circuit protection circuit for a pulse width modulation (PWM) unit which includes a PWM logic control circuit, an under voltage lookout (UVLO) circuit and an internal clock circuit; wherein the UVLO circuit detecting a bias power (Vcc) and delivering an UVLO signal when the bias power is judged excessively low, the PWM unit further comprising: a short circuit detector, a short circuit recovery circuit and a frequency multiplexer. The short circuit detector is to detect the UVLO signal and generate a short signal. The short circuit recovery circuit to set a pre-determined recovery time and generate a recovery signal when the pre-determined recovery time ends. The frequency multiplexer which is triggered by the short signal when the short circuit event occurs to change a switching frequency to a short PWM frequency, and triggered by the recovery signal to restore the switching frequency. | 04-29-2010 |
20100153022 | CUSTOMIZABLE CONTACTOR PROGNOSTICS SYSTEM - A method and apparatus for identifying the health status of a contactor, the method comprising the steps of counting the number of operations performed by the contactor, identifying a closing time of the contactor, using the number of operations and the closing time to assess the health status of the contactor and, where the health of the contactor is a first health status, reporting the health status of the contactor. | 06-17-2010 |
20110096573 | CONTROL CIRCUITS AND METHODS FOR SWITCHING MODE POWER SUPPLIES - Circuits and method for sensing a system output voltage change and transmitting an electrical signal to an auxiliary winding on the primary side. In an embodiment, a primary side controller detects the electrical signal and turns a power switch on and off to transfer energy from a primary winding to a secondary winding. A secondary side controller generates a voltage pulse at a terminal of the secondary winding when the system output voltage is below a reference voltage. The secondary side controller includes an input terminal connected to a system output, an output terminal connected to a terminal of the secondary winding, and a ground terminal connected to a ground potential of the system output. | 04-28-2011 |
20120123698 | Customizable Contactor Prognostics System - A method and apparatus for identifying a health status of a contactor includes a processor coupled to a computer readable media. The processor is coupled to the contactor to instruct the contactor to open and close. A database stored in the computer readable media includes operation count variables for the contactor, closing time variables for the contactor, and health status rules for the contactor. The operation count variables and the closing time variables may be inputs to the health status rules to identify the health status of the contactor. A customization program may also be stored in the computer readable media. The customization program enables an operator to modify at least one of the operation count variables, the closing time variables, and the health status rules to affect the identified health status of the contactor. | 05-17-2012 |
20120134182 | CONTROL CIRCUITS AND METHODS FOR SWITCHING MODE POWER SUPPLIES - A switching mode power supply (SMPS) includes a transformer having a primary winding, a secondary winding for providing an output voltage, and an auxiliary winding. The SMPS also includes a power switch coupled to the primary winding. A first control circuit is coupled to the secondary winding, and is configured to provide a first electrical signal to the secondary winding when the output voltage of the SMPS is less than a reference voltage during a discontinuous time, whereupon a second electrical signal is induced in the auxiliary winding. A second control circuit is coupled to the auxiliary winding and the power switch. The second control circuit is configured to regulate the output of the SMPS by controlling the power switch in response to a feedback voltage signal from the auxiliary winding, and is further configured to turn on the power switch in response to the second electrical signal. | 05-31-2012 |
20130088898 | ZERO STANDBY SWITCHING POWER SUPPLY SOLUTION - A switching mode power supply (SMPS) includes a power transistor coupled to the primary winding of transformer and a resistor coupled between the input power source and a control terminal of the power transistor for triggering a primary current flow through the power transistor for providing startup power. A primary side control circuit is configured to regulate the output of the SMPS. A secondary side control circuit is coupled to the secondary winding and being configured to provide a first electrical signal to the secondary winding when an output voltage of the SMPS is less than a first reference voltage, whereupon an awakening signal is induced in the auxiliary winding and causes the primary side control circuit to provide a turn-on signal to the power transistor. The primary side control circuit is configured to enter a standby mode or a normal operating mode in response to the awakening signal. | 04-11-2013 |
20130245002 | Triazolopyridine Compounds - The invention relates to compounds of formula (I) and salts thereof: | 09-19-2013 |
20130257400 | CURRENT CONTROL FOR DC-DC CONVERTER - A current control circuit includes an input circuit for receiving an input signal, an output circuit for providing an output signal. The output circuit is coupled to the input circuit to receive a current therefrom. The current control circuit also includes a feedback circuit coupled to the input circuit and the output circuit to form a feedback loop. The current control circuit further includes a first slope compensation current coupled to the output circuit for controlling the output signal, the first slope compensation current being a periodic current. The current control circuit also includes a second slope compensation current coupled to the feedback circuit, wherein the second slope compensation current has the same phase and period as the first slope compensation current. | 10-03-2013 |
20130343101 | FAST STARTUP CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLY - A control circuit for a switch mode power supply (SMPS) includes a power switch for coupling to a primary winding of the power supply and a startup resistor coupled to an external input voltage and to a control terminal of the power switch. The control circuit also includes a controller. During startup, the controller is configured to cause the power switch to amplify a startup current from an external input voltage through the startup resistor and provide a startup power to the controller. During normal operation, the controller is configured to provide a power switch control signal to turn on and off the power switch for controlling a current flow in the primary winding and regulating an output of the power supply. The controller is configured to provide a current signal for driving an NPN power switch and to provide a voltage signal for driving an NMOS power switch. | 12-26-2013 |
20140016375 | CIRCUITS AND METHODS FOR INCREASING OUTPUT OF SWITCH MODE POWER SUPPLY - A switching mode power supply (SMPS) includes a transformer having a primary winding for coupling to an input power source, a secondary winding for providing an output voltage of the SMPS, and an auxiliary winding. The SMPS also has a power transistor coupled to the primary winding and a primary side control circuit coupled to the auxiliary winding and the power transistor. The primary side control circuit is configured to regulate the output of the SMPS by controlling the power switch in response to a feedback voltage signal that is representative of an output of the SMPS. The SMPs also has a secondary-side control circuit coupled to the secondary winding and being configured to cause the output voltage of the SMPS to discharge when the output voltage of the SMPS is higher than a first reference voltage. | 01-16-2014 |
20140122932 | ANALYSIS SYSTEM AND METHOD FOR INTELLIGENT CUSTOMER SERVICE BASED ON COMMON SEQUENCE PATTERN - The present invention provides a method and system for information analysis. The method extracts a plurality of metadata from a source information set so as to generate a metadata set, the metadata comprising error log information that forms an error sequence in the metadata set; and generates a common error sequence set for a plurality of the metadata sets. By means of the method, it is possible to easily obtain a global error sequence pattern, and easily compare a new error with a previous error sequence pattern so as to prevent, diagnose and recover the new error. | 05-01-2014 |
20140150057 | METHOD AND APPARATUS FOR RECOGNIZING IMAGE CONTENT - Embodiments of the present invention provide a method and apparatus for recognizing image contents. In one embodiment of the present invention, there is provided a method for recognizing image contents, comprising: providing at least a first image pair and a second image pair to a user; obtaining a first answer and a second answer from the user, wherein the first answer and the second answer respectively indicate the user's determination on whether the image contents in the first image pair and the second image pair are same or not; and modifying a weight of the second image pair in response to the first answer matching a predetermined answer. In one embodiment of the present invention, there is provided an apparatus for recognizing image contents. | 05-29-2014 |
20140164397 | APPARATUS AND METHOD FOR SEARCHING INFORMATION - The present invention provides a method and apparatus for searching information. The method is for, in response to receipt of a keyword from a search user of a plurality of users, searching in an information repository to obtain one or more information items to be returned; and returning the information item to the search user based on an importance of each information item of the one or more information items. With the method, it is possible to fully leverage various objective internal relationships between search users, information items and creators and thus improve the search accuracy. | 06-12-2014 |
20140189419 | METHOD AND APPARATUS FOR PROVIDING COMPUTING RESOURCES - Embodiments of the present invention relate to a method and apparatus for providing computing resources to a user. In one embodiment of the present invention, there is provided a method for providing computing resources to a user, comprising: in response to a request from the user, looking up in a profile repository a profile corresponding to the user's domain information; requesting at least one computing resource associated with the profile; integrating the at least one computing resource into a virtual datacenter; and providing the virtual datacenter to the user; wherein the at least one computing resource is physically deployed in a distributed manner. In one embodiment of the present invention, there is provided an apparatus for providing computing resources to a user. | 07-03-2014 |
20150089309 | TROUBLESHOOTING BASED ON LOG SIMILARITY - The present disclosure relates to a method and apparatus for troubleshooting based on log similarity. In one embodiment, there is provided a method for troubleshooting based on log similarity, comprising: extracting log patterns from multiple log files in response to having collected the multiple log files from at least one system with troubles, the log pattern describing a regular expression to which a log message in a log file among the multiple log files conforms; building a pattern repository using the log patterns; mapping each of the multiple log files to an n-dimensional vector based on the pattern repository; and clustering multiple n-dimensional vectors to which each of the multiple log files is mapped into at least one group, wherein each of the at least one group indicates one trouble type of the at least one system. In another embodiment, there is provided a corresponding apparatus. | 03-26-2015 |