Abstract: A method for preparing 4-(hydroxymethylphosphinyl)-2-oxobutanoic acid, comprising the following steps: a) mixing 3-chloropropionyl chloride, a first solvent, trimethylsilyl cyanide and cyanide salt, performing a substitution reaction to obtain a material solution containing 4-chloro-2-oxobutyronitrile, then performing distillation under reduced pressure, and performing separation to obtain 4-chloro-2-oxobutyronitrile intermediate; b) subjecting the 4-chloro-2-oxobutyronitrile intermediate obtained in step a) and methyl phosphonite diester to Arbuzov reaction in a second solvent in the presence of cuprous iodide to obtain a material solution of (3-cyano-3-oxopropyl) methyl phosphinate, and performing purification to obtain crude (3-cyano-3-oxopropyl) methyl phosphinate; c) mixing the obtained crude (3-cyano-3-oxopropyl)methyl phosphinate with hydrochloric acid, performing hydrolysis reaction, and then performing purification treatment to obtain 4-(hydroxymethylphosphinyl)-2-oxobutanoic acid.

Abstract: The present invention provides a method for preparing 4-(hydroxymethylphosphinyl)-2-oxobutanoic acid, comprising the following steps: a) mixing acryloyl chloride, a first solvent, a polymerization inhibitor, a catalyst and potassium ferrocyanide, performing a substitution reaction, and performing distillation under reduced pressure to obtain an acryloyl cyanide intermediate; b) mixing the acryloyl cyanide intermediate obtained in step a) with hydrochloric acid and a polymerization inhibitor, performing a hydrolysis reaction, and then performing purification treatment to obtain crude 2-carbonyl-3-butenoic acid; c) mixing the crude 2-carbonyl-3-butenoic acid obtained in step b) with a second solvent and methyldichlorophosphine, and performing an addition reaction to obtain a solution containing diacyl chloride; d) mixing the solution containing diacyl chloride obtained in step c) with water, performing a hydrolysis reaction, and performing purification to obtain 4-(hydroxymethylphosphinyl)-2-oxobutanoic acid.

Abstract: Provided is a method for preparing 4-(hydroxymethylphosphinyl)-2-oxobutanoic acid, comprising the following steps: a) mixing methylphosphonite diester, carboxylic acid and acryloyl cyanide, performing addition reaction, and performing distillation under reduced pressure to obtain a material solution of (3-cyano-3-carbonylpropyl)methylphosphonate; b) mixing the material solution of (3-cyano-3-carbonylpropyl)methylphosphonate obtained in step a) with water uniformity, cooling to 10° C.-40° C., then adding hydrochloric acid dropwise for acidification, and after the dropwise addition being completed, continuing stirring for 0.1 h-1 h, then performing hydrolysis reaction, and finally performing purification treatment to obtain 4-(hydroxymethylphosphinyl)-2-oxobutanoic acid. In the provided preparation method, cyanation reaction is not required, which avoids the use of cyclic phosphonic anhydride that is high in cost and difficult to obtain and the highly toxic sodium cyanide.

Abstract: A fault circuit indicator (FCI) detection system for electrical equipment disposed in an enclosure or vault having an above-ground vent pipe exhaust outlet comprises one or more sensors disposed in the enclosure or vault to sense a condition of at least one unit of the electrical equipment. A sensored analytics unit (SAU) is coupled to the sensors to receive sensor data and analyze the sensor data, the SAU generating a corresponding analyzed data signal that provides information related to a condition of the at least one unit of electrical equipment. A transceiver is disposed inside at least a portion of the vent pipe to receive the analyzed data signal, wherein the transceiver is configured to communicate the analyzed data signal. A visual indicator is disposed on or within the vent pipe comprising one or more visual indicators, such as LEDs, driven by a driving circuit board to provide a visual signal corresponding to the condition of the at least one unit of electrical equipment.

Abstract: A sensor cable harness for coupling one or more sensors to at least one electrical asset of a power grid, comprises at least one sensor to sense a condition of the at least one electrical asset. At least one signal cable is configured to carry a sensor data signal from the at least one sensor to an electrical analytics unit (EAU). An asset indicator device is provided to at least temporarily couple to the at least one signal cable to indicate the at least one electrical asset being sensed by an assigned port of the EAU.

Abstract: A device to measure the voltage at a test point, also referred to as a test point voltage sensor, comprises a housing formed from a first material and a second material, wherein the first material comprises an insulating material and the second material comprises a conductive or semiconductive material. The housing includes an opening configured to cover a test point of a cable accessory. The device further includes a pressure pad, disposed in the housing, having a conductive mating surface configured to contact a test point of the basic insulation plug or end plug. The device further includes a low side capacitor embedded in the housing and electrically coupled to the conductive mating surface. The device further includes a signal wire electrically coupled to the low side capacitor.

Abstract: A fault circuit indicator (FCI) detection system for electrical equipment disposed in an enclosure or vault having an above-ground vent pipe exhaust outlet comprises one or more sensors disposed in the enclosure or vault to sense a condition of at least one unit of the electrical equipment. A sensored analytics unit (SAU) is coupled to the sensors to receive sensor data and analyze the sensor data, the SAU generating a corresponding analyzed data signal that provides information related to a condition of the at least one unit of electrical equipment. A transceiver is disposed inside at least a portion of the vent pipe to receive the analyzed data signal, wherein the transceiver is configured to communicate the analyzed data signal. A visual indicator is disposed on or within the vent pipe comprising one or more visual indicators, such as LEDs, driven by a driving circuit board to provide a visual signal corresponding to the condition of the at least one unit of electrical equipment.

Abstract: A device to measure the voltage at a test point, also referred to as a test point voltage sensor, comprises a housing formed from a first material and a second material, wherein the first material comprises an insulating material and the second material comprises a conductive or semiconductive material. The housing includes an opening configured to cover a test point of a cable accessory. The device further includes a pressure pad, disposed in the housing, having a conductive mating surface configured to contact a test point of the basic insulation plug or end plug. The device further includes a low side capacitor embedded in the housing and electrically coupled to the conductive mating surface. The device further includes a signal wire electrically coupled to the low side capacitor.

Abstract: Systems and methods for electronic access control for secured assets including locked facilities, lockers, shared vehicles and vending machines, which do not have internet connectivity. A mobile device communicates with a server to perform the authentication and access control steps, limiting the asset's interactions with outside devices to exchanging and updating access codes via short-range communications, such as near-field communications. Authentication and access control steps may be performed when the mobile device is at the secured asset, or alternatively those steps may be performed in advance, to allow access to assets located outside of data service to the mobile device.

Abstract: An apparatus and method is disclosed for providing an extensible information handling system (IHS) bus implemented on predetermined channels of a digital video interface. IHS video signal information is multiplexed with IHS bus information by a host multiplexer for transmission across a digital video connector. The multiplexed IHS video signal and IHS bus information is received by a display multiplexer, where it is demultiplexed. Demultiplexed IHS video signal information is received by a video interface receiver, where it is used to generate an image on a digital display. Demultiplexed IHS bus information is received by a host bus interface transmitter/receiver, where it is used to support peripheral devices attached to the digital display.

Abstract: A display provides power to an information handling system through a display cable. The display cable includes a power wire and an auxiliary channel. The display and information handling system communicate through the auxiliary channel to coordinate power transfer from the display to the information handling system, such as in the form of a trickle charge to a battery integrated in the information handling system.

Abstract: A system for augmenting displayed content with embedded invisible information such as visual or audio information, or a network link to the augmented information. The system includes a display module, first and second backlight modules, and a controller. The first and second backlight modules selectively provide visible light and invisible light, such as infrared light, to the display module. The controller provides first and second frames of content, alternating in a time sequential manner, to the display module with the first frames of content backlit by the first backlight module and the second frames of content backlit by only the second backlight module. The second frames of content provide invisible information embedded with the first frames of content and can be detected an infrared camera and used to display or provide augmented information.

Abstract: A system for augmenting displayed content with embedded invisible information such as visual or audio information, or a network link to the augmented information. The system includes a display module, first and second backlight modules, and a controller. The first and second backlight modules selectively provide visible light and invisible light, such as infrared light, to the display module. The controller provides first and second frames of content, alternating in a time sequential manner, to the display module with the first frames of content backlit by the first backlight module and the second frames of content backlit by only the second backlight module. The second frames of content provide invisible information embedded with the first frames of content and can be detected an infrared camera and used to display or provide augmented information.

Abstract: A system for human interaction based upon intention detection. The system includes a sensor for providing information relating to a posture of a person detected by the sensor, a processor, and a display device. The processor is configured to receive the information from the sensor and process the received information in order to determine if an event occurred. This processing includes determining whether the posture of the person indicates a particular intention, such as attempting to take a photo. If the event occurred, the processor is configured to provide an interaction with the person via the display device such as displaying a message or the address of a web site.

Abstract: A display provides power to an information handling system through a display cable. The display cable includes a power wire and an auxiliary channel. The display and information handling system communicate through the auxiliary channel to coordinate power transfer from the display to the information handling system, such as in the form of a trickle charge to a battery integrated in the information handling system.

Abstract: An electronic unit that include a projector (100) and removable module (102) that communicates data to the projector (100), wherein the projector (100) alters its power consumption in response to data received from the removable module (102).

Abstract: A projector (100) including a plurality of systems (110, 130) and a port (140) adapted to receive and communicate with a removable module (102). More particularly, the projector (100) is capable of indicating its capabilities to the removable module (102), receiving return information from the removable module (102), and selectively configuring the systems (110, 130) according to the return information when such removable module (102) is inserted into the port (140).

Abstract: A method of aiding viewing position for autostereoscopic displays having a suggested viewing zone or optimal viewing position. The method detects a position of a viewer using a detection sensor associated with the display and determines if the viewer is within the suggested viewing zone. If the viewer is not within the suggested viewing zone, the method provides feedback to the viewer, such as visual cues on the display, indicating how the viewer should move in order to be within the suggested viewing zone. The method can continuously provide the feedback in order to indicate how the viewer is moving with respect to the suggested viewing zone and when the viewer has moved into the suggested viewing zone.

Abstract: An apparatus and method is disclosed for providing an extensible information handling system (IHS) bus implemented on predetermined channels of a digital video interface. IHS video signal information is multiplexed with IHS bus information by a host multiplexer for transmission across a digital video connector. The multiplexed IHS video signal and IHS bus information is received by a display multiplexer, where it is demultiplexed. Demultiplexed IHS video signal information is received by a video interface receiver, where it is used to generate an image on a digital display. Demultiplexed IHS bus information is received by a host bus interface transmitter/receiver, where it is used to support peripheral devices attached to the digital display.

Abstract: A display provides power to an information handling system through a display cable. The display cable includes a power wire and an auxiliary channel. The display and information handling system communicate through the auxiliary channel to coordinate power transfer from the display to the information handling system, such as in the form of a trickle charge to a battery integrated in the information handling system.