Abstract: In one embodiment, harmonic control method for a flyback switching power supply, can include: (i) generating a sense voltage signal based on an output signal of the flyback switching power supply; (ii) generating a first compensation signal by determining and compensating an error between the sense voltage signal and a reference voltage; (iii) generating a second compensation signal by regulating the first compensation signal based on a duty cycle of a main power switch in the flyback switching power supply; and (iv) generating a control signal based on the second compensation signal and a triangular wave signal, to control the main power switch such that the output signal is substantially constant and an input current follows a waveform variation of an input voltage of the flyback switching power supply.

Abstract: A mobile telephone is used to diagnose a computer with malware. The telephone becomes a bootable device with a bootable partition in persistent storage. An operating system image including antivirus software in the bootable partition of the telephone is used to bootstrap the affected computer. The antivirus software executes upon the computer and transfers results (files, checksums, registry data) to the mobile telephone. The telephone uploads these results to a remote cloud service which then develops instructions, patterns, files, etc. for counteracting the malware. The cloud service downloads this response to the mobile telephone which then transfers the response back to the computer. The antivirus software on the computer uses the response to remove the malware on the computer. An interface application on the mobile telephone handles transfer with the computer and uploading and downloading with the cloud service.

Abstract: Critical resources are identified within a computer system such as operating system files, drivers, modules and registry keys that are used to bootstrap the computer. During a successful bootstrap, these resources are saved into persistent storage during the bootstrap phase. Changes to critical resources are monitored and these resources are backed up if they are changed. Upon computer system failure, steps of identifying the type of failure and an analysis of its root cause are optionally performed. A user is presented with a bootstrap menu and critical resources necessary to bootstrap the computer are retrieved from persistent storage and saved into their appropriate locations. A successful bootstrap is then performed of the computer system in order to recover from the failure.

Abstract: The present invention relates to an image interpolation method based on matrix and an image processing system. The image processing system first determines a gradient direction of an image region formed by a pixel dot array containing an interpolation point, and then based on the gradient direction and a position of the interpolation point, determines a triangle for interpolation in the image region formed with the pixel dot array, and finally, based on pixel values of pixel dots corresponding to three vertexes of the determined triangle and a distance from the interpolation point to a vertex of the triangle, calculates a pixel value of the interpolation point. Thus, the problem of edge jag or sawteeth of details in an oblique direction of a zoomed image is effectively solved, and a high-quality image is obtained. Furthermore, for the method the calculation is simple, and the computation load is light.

Abstract: Disclosed herein are various battery power measurement devices, methods, and related apparatuses. In one embodiment, a method of measuring a battery power can include: (i) detecting a voltage and a temperature at an output terminal of a battery; (ii) obtaining a first correction coefficient based on a battery open-circuit voltage at a previous sample time; (iii) obtaining a second correction coefficient based on the battery temperature; (iv) calculating a real-time battery open-circuit voltage by using the voltage at the output terminal of the battery, the first and second correction coefficients, the battery open-circuit voltage at the previous sample time, and a time interval between the previous sample time and a present sample time; and (v) converting the real-time battery open-circuit voltage into a battery power measurement for display.

Abstract: Thyristor dimming circuits and methods are disclosed herein. In one embodiment, a thyristor dimming circuit can include: (i) a thyristor and a rectifier bridge configured to receive a sinusoidal AC voltage, and to generate a phase-loss input voltage; (ii) a power stage circuit configured to have the phase-loss input voltage applied thereto, the power stage circuit having a main switch and being configured to drive a lamp load through electrical conversion; and (iii) a discharging circuit configured, during a first predetermined time interval, to control the main switch to operate with a fixed duty cycle at a fixed frequency, where the first predetermined time interval begins prior to an absolute value of the sinusoidal AC voltage being reduced to zero, the first predetermined time interval ending when the phase-loss input voltage is again applied to the power stage circuit.

Abstract: Disclosed are light-emitting diode (LED) driver circuits, methods, and a switch mode power supply. In one embodiment, an LED driver can include: (i) a silicon-controlled rectifier (SCR) and a rectifier bridge configured to receive an AC voltage, and to generate a phase-loss half sine wave voltage signal; (ii) a threshold voltage control circuit configured to receive a threshold voltage and an input voltage signal that represents the phase-loss half sine wave voltage signal, and to determine whether to output the threshold voltage based on angle information of the input voltage signal; (iii) a first control circuit configured to compare the input voltage signal against the threshold voltage output by the threshold voltage control circuit, and to generate a first control signal; and (iv) a power switch controllable by the first control signal to be off until an absolute value of the AC voltage is reduced to zero.

Abstract: Disclosed are dimmable LED driver circuits and methods. A dimmable LED driver can include: an SCR, an electronic transformer, and a rectifier bridge to convert an AC voltage to a DC voltage signal; a power stage circuit that receives the DC voltage signal, and outputs a constant current to drive an LED load, where the power stage circuit includes first and second power stage circuits, the first power stage circuit receiving the DC voltage signal, and generating a first output voltage to the second power stage; and an input current control circuit that receives an input current of the first power stage circuit and the first output voltage, and generates a first control signal to control the input current as a square wave signal during an on time of the SCR, and the input current is substantially zero during an off time of the SCR.

Abstract: The present invention relates to an image interpolation method based on matrix and an image processing system. The image processing system first determines a gradient direction of an image region formed by a pixel dot array containing an interpolation point, and then based on the gradient direction and a position of the interpolation point, determines a triangle for interpolation in the image region formed with the pixel dot array, and finally, based on pixel values of pixel dots corresponding to three vertexes of the determined triangle and a distance from the interpolation point to a vertex of the triangle, calculates a pixel value of the interpolation point. Thus, the problem of edge jag or sawteeth of details in an oblique direction of a zoomed image is effectively solved, and a high-quality image is obtained. Furthermore, for the method the calculation is simple, and the computation load is light.

Abstract: Visual information over a network by filtering a full resolution image signal to produce a series of sub-bands, wherein at least one of the sub-bands constitutes a base sub-band representing an image of reduced resolution and wherein additional sub-bands carry higher resolution information. At least the base sub-band is transmitted to a far end endpoint to permit image reconstruction at the far end endpoint at a degree of resolution dependent on the number of sub-bands used to reconstruct the image.

Abstract: A script-based scan engine is embedded in a webpage requested by a client computer from a web server. The script-based scan engine may be embedded in the webpage by injecting the script-based scan engine in a header of the webpage in a computer security device between the client computer and the web server, or by integrating the script-based scan engine in the webpage as a library. The script-based scan engine executes in the client computer when the webpage is received by the client computer. The script-based scan engine scans the webpage for web threats, which may include malicious codes, exploits, and phishing, for example. The webpage is allowed to be rendered by a web browser in the client computer when the webpage is deemed safe by the script-based scan engine.

Abstract: An explosion proof and environment protective oil (gas) refueling equipment includes an oil (gas) storage tank connected with a refueling machine. The inner chamber of the oil (gas) storage tank is filled with an explosion-proof material, which is a multi-layer material unit made of high porosity lamellar materials, with a fixed supporting part being set in this material unit for fixing and supporting the unit, a skid is set under the oil (gas) storage tank and the oil (gas) refueling machine. A plurality of said units is orderly installed in the inner chamber of the oil storage tank, with reasonable installing method and structure.

Abstract: A safe and environmental protection type underground oil tank can comprise a tank body of two-layer structure comprising an inner tank wall and an outer tank wall, an interlayer space formed between the inner tank wall and the outer tank wall, characterized in thai high porous explosion-proof materials in a plurality of units are respectively filled in a cavity of tank body and the interlayer space formed between the two-layer tank walls. The underground oil tank can also comprise an oil leak detection device being provided in the interiayer space between the two-layer tank walls, and an oil spill pool being established on a manhole cover of the tank body, and the bottom of this oil spill pool being in communication with the interiayer space between the two-layer tank walls.

Abstract: A centrifugal coolant pump, comprising a water inlet coupling flange(1), an impeller (2), a volute casing (3), a bearing (4), a bearing housing (5), a transmission shaft (6), and fasteners (7). The bearing (4) is interference installed in the bearing housing (5). The transmission shaft (6) and the bearing (4) inner race are interference fitted together. The impeller (2) is interference installed on the transmission shaft (6). The water inlet coupling flange (1) and the bearing housing (5) are separately disposed on the two sides of the volute casing (3) and fixedly connected via the fasteners (7). The water inlet coupling (1) is provided with a first water inlet (A11), and the volute casing (3) is provided with a second water inlet (B12). The impeller (2) mates with the volute casing (3) to form an independent high-temperature flow path (9) and a low-temperature flow path (8).

Abstract: Disclosed are halogenated amide esters that are suitable as internal electron donors in procatalyst compositions. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit improved catalyst activity and/or improved catalyst selectivity and produce propylene-based olefins with broad molecular weight distribution.

Abstract: Disclosed are procatalyst compositions having an internal electron donor which includes a substituted amide ester and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit improved catalyst activity and/or improved catalyst selectivity and produce propylene-based olefins with broad molecular weight distribution.

Abstract: Scanning of the shadow copy instead of the hard disk of a computer (using an accessing interface instead of the file system interface or an API of the operating system) enables the scanning software to access any files that might have been locked by the malware on the hard disk and avoids root kits. Files cannot be locked because a disk parser is used instead of the operating system or normal file system interface. It is possible for malware to change or reinfect files during the scanning and cleaning process. Files on the hard disk in existence at the time a manual scan is begun are scanned and backed up to the cache if changed during scanning. Dropped malware is removed by reverting the hard disk to the shadow copy once scanning and cleaning has been performed. Even if a watchdog drops a file during the scanning and cleaning process (because it detects that other malware components are being affected) these dropped files will be removed.

Abstract: A web page available for download from a web server computer may include a reference to a web widget. When the web page is received in a client computer, the reference executes and retrieves the web widget from a security server computer. The web widget may be configured to detect when a cursor in the client computer is pointed to a link displayed on the web page. The web widget may communicate with a remotely located computer to determine if the link points to a downloadable file that contains malicious code. The web widget may display a warning message to alert a user of the client computer when the downloadable file contains malicious code.

Abstract: The present invention is directed towards methods and systems for delivering applications from a desktop operating system. A delivery module may receive a request from a client device of a user for access to an application, and identify that a desktop session can host the requested application. An agent may extract presentation layer elements of the requested application from presentation layer elements of other components of the desktop session, and provide, via a presentation layer protocol, the isolated presentation layer elements in a first application session to the client device for display. The delivery module may receive a second request from the user for the application, identify that the application is hosted by the desktop session and delivered in the first application session, and provide a second application session of the application from the desktop session to the user responsive to the determination.

Abstract: A steering system for a machine having at least one steerable traction device is disclosed. The steering system may have a steering actuator operatively connected to the at least one steerable traction device, and a travel speed sensor configured to generate a signal indicative of a travel speed of the machine. The steering mechanism may also have an operator input device having a deadzone. The deadzone may vary in response to the signal. The steering system may also have a controller in communication with the steering actuator, the operator input device, and the travel speed sensor. The controller may be configured to affect operation of the steering actuator in response to operation of the operator input device only when the operation of the operator input device deviates from the deadzone.