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Heat Sink and Case Having the Same

A heat sink adapted to dissipate heat from a heat source includes a heat dissipating unit that includes at least one deformation portion protruding toward the heat source, and a reflective surface formed on the deformation portion and facing the heat source for reflecting radiant heat from the heat source. A case including the heat sink is also disclosed.




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Enhanced Boiling with Selective Placement of Nucleation Sites

A heat transfer system includes a substrate having a heat exchange region including a surface having an enhancement region including alternating regions of selectively placed plurality of nucleation sites and regions lacking selectively placed nucleation sites, such that bubble formation and departure during boiling of a liquid in contact with the enhancement region induces liquid motion over the surface of the regions lacking selectively placed nucleation sites sufficient to enhance both critical heat flux and heat transfer coefficient at the critical heat flux in the enhancement region of the system.




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FUNCTIONAL COATINGS ENHANCING CONDENSER PERFORMANCE

Coatings for enhancing performance of materials surfaces, methods of producing the coating and coated substrates, and coated condensers are disclosed herein. More particularly, exemplary embodiments provide chemical coating materials useful for coating condenser components.




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HEAT DISSIPATION MODULE

A heat dissipation module adapted to perform heat dissipation on a heat generating component is provided. The heat dissipation module includes a graphite sheet and an insulating and heat conducting layer. The graphite sheet includes a plurality of through holes, an attaching surface and a heat dissipating surface opposite to the attaching surface, wherein the attaching surface is configured to be attached to the heat generating component. Each of the through holes penetrates the graphite sheet, so the attaching surface and the heat dissipating surface are connected via the through holes. The insulating and heat conducting layer covers the graphite sheet. The insulating and heat conducting layer least covers the attaching surface, the heat dissipating surface and inner walls of the through holes.




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THERMAL MANAGEMENT USING PHASE CHANGE MATERIAL

Generally discussed herein are devices and methods for thermal management of a component. An apparatus can include a phase change material substantially at a phase transition temperature of the phase change material, a component near, on, or at least partially in the phase change material, and a heat removal device to transfer heat energy away from the phase change material and maintain the phase change material substantially at the phase transition temperature.




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HEAT RECOVERY APPARATUS BASED ON FUEL CELL AND OPERATING METHOD THEREOF

Provided are a heat recovery apparatus based on a fuel cell and an operating method thereof. In the fuel cell-based heat recovery apparatus and the operating method thereof, hot water and steam may be generated by using heat generated while a molten carbonate fuel cell (MCFC) operates to supply the generated hot water or steam to buildings, thereby reducing a rate of operation in cooling/heating equipment using electricity so as to reduce air-conditioning costs.




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COOLING PLATE

A cooling plate with a structural plate and a cover plate, wherein the structural plate has a channel-like recess which is enclosed by a raised edge region. The cover plate rests on the raised edge region and covers the channel-like recess in order to form a channel. Openings with connection elements arranged at the openings are provided in the structural plate and/or in the cover plate in order to let a fluid into the channel and to let a fluid out of the channel. A first mounting opening, which is in the form of a round hole, and a second mounting opening, which is in the form of an elongate hole, are provided in both the structural plate and in the cover plate, the respective first and second mounting openings being aligned with one another in order to receive a pin for fixing the two plates during a soldering process.




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HEAT DISSIPATING DEVICE AND SWING STRUCTURE THEREOF

A swing structure of a heat dissipating device includes an elongated blade and a magnetic actuation disposed on the blade. The blade has a loading segment and a heat dissipating segment, two opposite end portions of the loading segment are respectively defined as a mounting end portion and a connecting end portion, and two opposite end portions of the heat dissipating segment are respectively defined as a positioning end portion and a free end portion. The connecting end portion is connected to the positioning end portion. A thickness of the loading segment is greater than that of the heat dissipating segment. When the magnetic actuation is driven by a magnetic field to swing the blade, a swing angle of the free end portion of the heat dissipating segment is greater than that of the connecting end portion of the loading segment.




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LIQUID-COOLING HEAT SINK

A liquid-cooling heat sink has a heat-conductive tube and multiple heat-conductive units arranged adjacent to the heat-conductive tube. The heat-conductive tube has a first tube and a second tube. An isolation member having an isolation channel is located between the first tube and the second tube. The isolation member obstructs the heat exchange between the first tube and the second tube. A first delivery tube and a second delivery tube of each one of the heat-conductive bodies respectively connect to the first tube and the second tube of the heat-conductive tube, thereby integrating the first tube and the second tube and obstructing the heat exchange between the cooling liquids with different temperatures. Each of the heat-conductive units distributes the cooling liquids with different temperatures by the heat-conductive tube, thereby simplifying the pipeline setting and reducing the volume of the liquid-cooling heat sink.




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LIQUID COOLED RACK INFORMATION HANDLING SYSTEM HAVING LEAK MANAGEMENT SYSTEM

A Rack Information Handling System (RIHS) has a liquid cooling subsystem that provides cooling liquid to liquid cooled (LC) nodes received in chassis-receiving bays of a rack. Leak collection structures are positioned to receive cooling liquid that leaks from the liquid cooling subsystem. Liquid sensors detect a presence of leaked cooling liquid in the leak collection structures. A leak detection subsystem responds to a detected presence of liquid by providing a leak indication. In one or more embodiments, the liquid cooling subsystem has a liquid rail formed by more than one rack interconnections vertically aligned in a rear section of the rack that are connected by modular rail conduits for node-to-node fluid transfer. The leak collection structures include a pipe cover received over at least one modular rail conduit. A liquid cavity of each pipe cover spills over into another lower pipe cover at a rate that can be correlated to severity of the leak.




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INSTALLING ASSEMBLY AND HEAT SINK USING THE SAME

A heat sink includes a cooling module and an installing assembly for fixing the heat sink on a housing. The installing assembly includes a case, a handle rotatablely fixed in the case and a support including a fixing board with blocks and two brackets. The handle is actively connected with the support. The fixing board is fixed on a bottom plate of the case. The handle includes two bulges. The brackets include two slide openings for receiving the bulges. When the heat sink is installed, the handle is rotated to be vertical, the bulges are out of the slide openings, and the blocks are stuck on the housing. When the heat sink is dismantled, the handle is rotated to be horizontal and the bulges are stuck into the slide openings to resist the brackets, thereof the fixing board being uplifted and the blocks being pushed away from the housing.




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HEAT PUMP SYSTEM WITH ADDITIONAL HEAT SOURCE FOR EVAPORATION OF REFRIGERANT

An air conditioning system of a motor vehicle with a refrigerant circuit for operation in a refrigerator mode and a heat pump mode. The refrigerant circuit includes a primary circuit with a compressor, a heat exchanger for heat transfer between the refrigerant and the surroundings, an expansion element and a heat exchanger for heat transfer from the intake air being conditioned for the passenger compartment to the refrigerant, and a first flow path. The flow path extends from a branching point between the compressor and the heat exchanger to an opening and includes a heat exchanger for heat transfer from the refrigerant to the intake air being conditioned for the passenger compartment. The heat exchanger is situated in a flow direction of intake air of the passenger compartment after the heat exchanger.




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HEAT EXCHANGER HAVING WAVE FIN PLATE FOR REDUCING EGR GAS PRESSURE DIFFERENCE

Disclosed is a heat exchanger including: a heat exchanger body; a gas inlet for introducing exhaust gas into the heat exchanger body; a coolant inlet for introducing a coolant into the heat exchanger body; a gas outlet for discharging the exhaust gas that is cooled by heat exchange with the coolant; and a coolant outlet for discharging the coolant that completes heat exchange with the exhaust gas. In this case, the heat exchanger body includes: a laminated tube core formed by laminating a plurality of gas channels side by side; a housing formed so as to enclose the laminated tube core except for opposite ends thereof; and a wave fin plate integrally provided with a plurality of wave fins and arranged within each of the gas channels, wherein each of the wave fins includes a fixed pitch section, and a variable pitch section.




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Integratable Movement Device for Ventilating Equipment

An integratable movement device for ventilating equipment includes an electric machine such as a motor and a fan wheel connected with the electric machine. The movement device further includes a housing, wherein the electric machine and the fan wheel are installed in an inner lower portion of the housing. An upper portion of the housing integrally forms one or more venting outlets. A plurality of venting outlet units is provided at the venting outlets respectively. A chamber provided between the venting outlets and the fan wheel in the housing defines a venting channel. The housing having the venting outlets and the venting channel, along with the venting outlet units, the electric machine and the fan wheel configure the integratable movement device that is able to be directly assembled into the ventilating equipment.




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HEAT EXCHANGER

What is disclosed is a heat exchanger including: a core including a plurality of core plates, first and second passages, and a vertical passage; a base plate including a passage port; and a distance plate; wherein the first vertical passage and the passage port are arranged apart from each other in a direction orthogonal to a stacking direction of the core plates, and wherein the distance plate includes a bottom wall part and a swelling part, the bottom wall part being a thin plate-shaped and being joined to an upper surface of the base plate, the swelling part swelling up in the stacking direction from the bottom wall part so as to surround a circumference of a communication passage which communicates the first vertical passage with the passage port and being joined to a lowermost surface of the core in a flange part of a tip of the swelling part.




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Automobile Interior Temperature Stabilizer

An automobile interior temperature stabilizer includes a holder adapted for placing within a vehicle cabin and a temperature stabilizing member which is made of latent heat material that absorbs and releases heat without rising in its temperature and is disposed in the holder, wherein the temperature stabilizing member has a threshold temperature range that the temperature stabilizing member is arranged for absorbing cabin heat within the vehicle cabin to cool down the vehicle cabin when an interior temperature of the vehicle is higher than the threshold temperature range, and the temperature stabilizing member is arranged for releasing stored heat to the vehicle cabin to warm the vehicle cabin when an interior temperature of the vehicle is lower than the threshold temperature range. Therefore, the automobile interior temperature stabilizer is able to maintain the cabin temperature of the vehicle without using any power from the vehicle.




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HIGH-EFFICIENCY PLATE TYPE HEAT EXCHANGER

A high-efficiency plate type heat exchanger increases a heat-exchanging efficiency with an exhaust gas by connecting unit fluidized beds formed with stacked heat exchanging plates to each other in up and down directions, and elongating a flow path of circulating water to be greater than or equal to two passes (2-PASS). The heat exchanger retrieves heat of an exhaust gas by increasing a flow amount of circulating water of a portion close to a burner while a circulation path is elongated as described above. In addition, the high-efficiency plate type heat exchanger increases efficiency thereof by inserting a baffle plate having distribution holes between unit fluidized beds, controlling a flow of an exhaust gas while reducing an exhaust speed of the exhaust gas using heat exchanging fins of the baffle plate, absorbing heat of the exhaust gas, and effectively using a heat transfer area.




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HEAT EXCHANGE DEVICE

A heat exchange device includes a housing, a heat exchange module, and a piezoelectric module. Isolated inner and outer circulation chambers are formed in the housing. The heat exchange module in the housing includes a stack of separated plates parallel to each other. An inner channel communicated with the inner circulation chamber and an outer channel communicated with the outer circulation chamber are defined respectively by both sides of one of the plates and the other adjacent plates. The piezoelectric module in the housing includes a piezoelectric chip, and first and second heat exchange sides thermally coupled to the piezoelectric chip. The first heat exchange side is located in the inner circulation chamber and the second heat exchange side is located in the outer circulation chamber, so that heat can be transferred between the inner and outer circulation chambers via the piezoelectric chip.




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CRYOGENIC HEAT TRANSFER BY A NANOPOROUS SURFACE

Various methods and systems are provided for cryogenic heat transfer by nanoporous surfaces. In one embodiment, among others, a system includes a cryogenic fluid in a flow path of the system; and a system component in the flow path that includes a nanoporous surface layer in contact with the cryogenic fluid. In another embodiment, a method includes providing a cryogenic fluid; and initiating chilldown of a cryogenic system by directing the cryogenic fluid across a nanoporous surface layer disposed on a surface of a system component.




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ADJUSTABLE REFRIGERANT DISTRIBUTION DEVICE AND HEAT EXCHANGER HAVING SAME

An adjustable refrigerant distribution device and a heat exchanger having same. The heat exchanger comprises: first and second collecting pipes; a heat exchanger core body; and a refrigerant distribution device, the refrigerant distribution device comprises a first distribution pipe, a first inlet pipe and a first drive assembly. The pipe wall of the first distribution pipe is provided with a first distribution hole. The first distribution pipe is inserted into at least one of the first and the second collecting pipes. The first inlet pipe is located outside at least one collecting pipe and is in communication with the first distribution pipe, and the first drive assembly drives the first distribution pipe to move relative to at least one collecting pipe. The distribution pipe of the refrigerant distribution device and the heat exchanger can translate along the axial direction, thereby adjusting refrigerant distribution so as to satisfy different distribution requirements.




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Integrated heat spreader having electromagnetically-formed features

Integrated heat spreaders having electromagnetically-formed features, and semiconductor packages incorporating such integrated heat spreaders, are described. In an example, an integrated heat spreader includes a top plate flattened using an electromagnetic forming process. Methods of manufacturing integrated heat spreaders having electromagnetically-formed features are also described.




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COMPARTMENTALIZED HEAT EXCHANGER IN INDUSTRIAL COMPONENT SYSTEM

In a cooled component system, a heat exchanger mounted on a surface of the industrial component is housed in an isolated access compartment adjacent to but separated from the primary compartment containing the industrial component. Housing the heat exchanger in a separately accessible compartment permits access to the heat exchanger for cleaning or other purposes without having to shut down the industrial component being cooled. A means for moving a cooling media over the surface a the heat exchanger might also be included to maximize heat exchange.




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LIQUID-ASSISTED BOTTOM AIR COOLING OF ELECTRONIC RACKS IN DATA CENTERS

An electronic rack includes a housing to contain one or more IT components arranged in a stack, a first rack aisle formed on a first side of the one or more IT components to direct cooler air received from the cooling unit upwardly, and a second rack aisle formed on a second side of the one or more IT components to direct warmer air to the cooling unit downwardly. The electronic rack further includes a cooling unit having one or more cooling units disposed underneath the IT components to receive first liquid from an external chiller system, to exchange heat carried by the warmer air using the first liquid to generate the cooler air, to transform the first liquid into a second liquid with a higher temperature, and to transmit the second liquid carrying the exchanged heat back to the external chiller system.




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DIGITAL DOWN CONVERTER WITH EQUALIZATION

A digital down converter with an equalizer translates an ADC output signal to a low frequency spectral region, followed by decimation. All operations of correction of the processed signal are carried out with a reduced sampling rate compared with sampling rates of the prior art. Equalization is performed only in a frequency pass band of the down converter. The achieved reduction of the required computation resources is sufficient to enable the down converter with equalization to operate in a real time mode.




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DIFFERENTIAL DATA CREATING APPARATUS, DATA UPDATING APPARATUS, AND DIFFERENTIAL DATA CREATING METHOD

The present invention aims to provide a technology capable of enhancing the effect of reducing differential data in size. A bit shift unit shifts either of old data and new data in a forward direction and a backward direction of its bit string by each of 0, 1, 2, . . . , and n bit(s) to generate a plurality of data. A copy bit string extracting unit extracts information on copy bit strings based on the plurality of data and other non-shifted data. An additional bit string extracting unit excludes copy bit strings from the new data to extract information on additional bit strings. A differential data generating unit creates differential data based on the information on copy bit strings and the information on additional bit strings.




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METHODS AND APPARATUS TO PARALLELIZE DATA DECOMPRESSION

Methods and apparatus to parallelize data decompression are disclosed. An example method adjusting a first one of initial starting positions to determine a first adjusted starting position by decoding the bitstream starting at a training position in the bitstream, the decoding including traversing the bitstream from the training position as though first data located at the training position is a valid token; and merging, by executing an instruction with the processor, first decoded data generated by decoding a first segment of the compressed data bitstream starting from the first adjusted starting position with second decoded data generated by decoding a second segment of the compressed data bitstream, the decoding of the second segment starting from a second position in the compressed data bitstream and being performed in parallel with the decoding of the first segment, and the second segment preceding the first segment in the compressed data bitstream.




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PULSE WIDTH MODULATOR AND NON-TRANSITORY COMPUTER READABLE MEDIUM FOR STORING PROGRAM FOR PULSE WIDTH MODULATOR

The pulse width modulator includes a subtraction unit configured to perform subtraction between an m value digital signal and a pulse width modulation signal; a feedforward filter unit configured such that a ΔΣ modulator to which an output signal of the subtraction unit is input and which includes integrators of a second order or higher is in cascade connection, and configured to operate with a sampling frequency FS; a product-sum computing unit configured to operate with a sampling frequency (FS/n) (n: an integer of two or more) to perform product-sum computing of an output signal of each integrator of the feedforward filter unit; and a pulse width modulation unit configured to operate with the sampling frequency (FS/n) to perform pulse width modulation of an output signal of the product-sum computing unit to output a pulse width modulation signal.




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METHOD FOR ADAPTIVELY REGULATING CODING MODE AND DIGITAL CORRECTION CIRCUIT THEREOF

A method for adaptively regulating a coding mode and a digital correction circuit thereof are provided. The method is for a successive-approximation-register analog-to-digital converter (SAR ADC). In the method, whether to regulate a binary weight corresponding to each of digital bits is determined according to the number of completed comparison cycles to provide a first coding sequence. The first coding sequence is directly compensated according to uncompleted comparison cycles to provide a correct digital output code.




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APPARATUS AND METHOD FOR COMPRESSING CONTINUOUS DATA

Disclosed are an apparatus and method for compressing continuous data. The apparatus for compressing continuous data may include a data generator configured to calculate differences between adjacent values in original continuous data and generate data based on the calculated differences.




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BASELINE COMPENSATION SYSTEM

An analog to digital converter (ADC) system that includes a first amplifier configured to amplify an analog input signal to produce an amplified direct current (DC) signal, an ADC configured to receive the amplified DC signal and convert the amplified DC signal into a digital DC signal, a digital to analog converter configured to receive the digital DC signal and convert the digital DC signal into an analog DC signal, and a second amplifier configured to receive an analog alternating current (AC) signal comprising the analog DC signal subtracted from the analog input signal and amplify the analog AC signal to produce an amplified AC signal. The ADC is further configured to receive the amplified AC signal and produce a digital AC signal. The second amplifier has a gain greater than a gain of the first amplifier.




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ENHANCED DATA COMPRESSION FOR SPARSE MULTIDIMENSIONAL ORDERED SERIES DATA

Disclosed are methods and systems for significantly compressing sparse multidimensional ordered series data comprised of indexed data sets, wherein each data set comprises an index, a first variable and a second variable. The methods and systems are particularly suited for compression of data recorded in double precision floating point format.




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ASYNCHRONOUS SUCCESSIVE APPROXIMATION ANALOG-TO-DIGITAL CONVERTER AND RELATED METHODS AND APPARATUS

An ultrasound device including an asynchronous successive approximation analog-to-digital converter and method are provided. The device includes at least one ultrasonic transducer, a plurality of asynchronous successive-approximation-register (SAR) analog-to-digital converters (ADC) coupled to the at least one ultrasonic transducer, at least one asynchronous SAR in the plurality having a sample and hold stage, a digital-to-analog converter (DAC), a comparator, and control circuitry, wherein a DAC update event following at least one bit conversion is synchronized to a corresponding DAC update event of at least one other ADC in the plurality of ADCs.




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Method And System For Time Interleaved Analog-To-Digital Converter Timing Mismatch Estimation And Compensation

Methods and systems for time interleaved analog-to-digital converter timing mismatch calibration and compensation may include receiving an analog signal on a chip, converting the analog signal to a digital signal utilizing a time interleaved analog-to-digital-converter (ADC), and reducing a blocker signal that is generated by timing offsets in the time interleaved ADC by estimating complex coupling coefficients between a desired digital output signal and the blocker signal utilizing a decorrelation algorithm on frequencies within a desired frequency bandwidth. The decorrelation algorithm may comprise a symmetric adaptive decorrelation algorithm. The received analog signal may be generated by a calibration tone generator on the chip. An aliased signal may be summed with an output signal from a multiplier. The complex coupling coefficients may be determined utilizing the decorrelation algorithm on the summed signals. A multiplier may be configured to cancel the blocker signal utilizing the determined complex coupling coefficients.




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CONVERTER FOR CONVERTING CODE-MODULATED POWER WITH CONVERSION CODE, AND CONTROLLER THEREOF

A converter includes: a terminal that receives code-modulated power that has been generated with a modulation code; and a circuit that intermittently converts the code-modulated power with a conversion code based on the modulation code. The code-modulated power is alternating-current power.




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DATA RECOVERY UTILIZING OPTIMIZED CODE TABLE SIGNALING

A computer-implemented method, system, and apparatus for storing binary data is disclosed. A processor receives a digital bit stream and transforms the digital bit stream to an encoded digital bit stream. The encoded digital bit stream comprises a data message encoded by an OCTS-expanded table for storage. The processor stores the encoded digital bit stream on a digital data storage device or system.




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DYNAMIC DATA COMPRESSION SELECTION

Aspects of dynamic data compression selection are presented. In an example method, as uncompressed data chunks of a data stream are compressed, at least one performance factor affecting selection of one of multiple compression algorithms for the uncompressed data chunks of the data stream may be determined. Each of the multiple compression algorithms may facilitate a different expected compression ratio. One of the multiple compression algorithms may be selected separately for each uncompressed data chunk of the data stream based on the at least one performance factor. Each uncompressed data chunk may be compressed using the selected one of the multiple compression algorithms for the uncompressed data chunk.




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ELECTRONIC APPARATUS AND METHOD FOR DETECTING STATUS OF KEYS THEREOF

An electronic apparatus and a method for detecting status of keys thereof are provided. The electronic apparatus comprises a key module, a key control circuit, a conversion circuit with calibration mechanism and a processor. The key control circuit detects whether any of keys in the key module is pressed. If the detection result is affirmative, the press status of each of the keys is scanned by the key control circuit to obtain a coarse scan result. The conversion circuit with calibration mechanism is configured to perform the other system function of the electronic apparatus. When the processor determines that at least one of the keys is not pressed according the coarse scan result, the conversion circuit with calibration mechanism is switched to assist a re-scan operation of the press status of the at least one of the keys.




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DIGITAL MEASUREMENT OF DAC TIMING MISMATCH ERROR

For analog-to-digital converters (ADCs) which utilize a feedback digital-to-analog converter (DAC) for conversion, the final analog output can be affected or distorted by errors of the feedback DAC. A digital measurement technique can be implemented to determine timing mismatch error for the feedback DAC in a continuous-time delta-sigma modulator (CTDSM) or in a continuous-time pipeline modulator. The methodology utilizes cross-correlation of each DAC unit elements (UEs) output to the entire modulator output to measure its timing mismatch error respectively. Specifically, the timing mismatch error is estimated using a ratio based on a peak value and a value for the next tap in the cross-correlation function. The obtained errors can be stored in a look-up table and fully corrected in digital domain or analog domain.




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DIGITAL MEASUREMENT OF DAC SWITCHING MISMATCH ERROR

For analog-to-digital converters (ADCs) which utilize a feedback digital-to-analog converter (DAC) for conversion, the final analog output can be affected or distorted by errors of the feedback DAC. A digital measurement technique can be implemented to determine switching mismatch error for the feedback DAC in a continuous-time delta-sigma modulator (CTDSM) or in a continuous-time pipeline modulator. The methodology forces each DAC unit elements (UEs) to switch a certain amount times and then use the modulator itself to measure the errors caused by those switching activities respectively. The obtained errors can be stored in a look-up table and fully corrected in digital domain or analog domain.




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SIGNAL TRANSFER FUNCTION EQUALIZATION IN MULTI-STAGE DELTA-SIGMA ANALOG-TO-DIGITAL CONVERTERS

Typically, complex systems require a separate and expensive equalizer at the output of an analog-to-digital converter (ADC). Rather than providing a separate equalizer, the effective Signal Transfer Function (STF) of a Multi-stAge noise SHaping (MASH) ADC can be modified by leveraging available digital filtering hardware necessary for quantization noise cancellation. The modification can involves adding calculations in the software previously provided for computing digital quantization noise cancellation filter coefficients, where the calculations are added to take into account equalization as well. As a result, the signal transfer function can be modified to meet ADC or system-level signal-chain specifications without additional equalization hardware. The method is especially attractive for high-speed applications where magnitude and phase responses are more challenging to meet.




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PATH ENCODING AND DECODING

This invention relates to a system, method and computer program product for encoding an input string of binary characters including: a cellular data structure definition including a starting empty cell; one or more path definitions defining paths through the data structure; a character reading and writing engine for writing a binary character to an empty cell with a predefined initial position; a next cell determination engine for determining a next empty cell by methodically checking cells along one of the paths in the data structure until an empty cell is located; a loop facilitator for looping back to the writing next character step and the determining next cell step until there are no more data characters or a next empty cell is not determined; and a serialization deserialization engine for methodically serializing the data structure into a one dimensional binary string of characters representing an encoded string of alphanumeric characters.




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PROTECTION CIRCUITS FOR TUNABLE RESISTOR AT CONTINUOUS-TIME ADC INPUT

Continuous-time analog-to-digital converters (ADCs) such as continuous-time delta-sigma ADCs and continuous-time pipeline ADCs, has input resistor structure at the input. The input resistor structure is typically tunable, and the tunability is usually provided by metal-oxide semiconductor field effect transistor (MOSFET) switches. Core MOSFETs, which has a terminal-to-terminal voltage




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ADAPTIVE DIGITAL QUANTIZATION NOISE CANCELLATION FILTERS FOR MASH ADCS

For continuous-time multi-stage noise shaping analog-to-digital converters (CT MASH ADCs), quantization noise cancellation often requires accurate estimation of transfer functions, e.g., a noise transfer function of the front end modulator and a signal transfer function of the back end modulator. To provide quantization noise cancellation, digital quantization noise cancellation filters adaptively tracks transfer function variations due to integrator gain errors, flash-to-DAC timing errors, as well as the inter-stage gain and timing errors. Tracking the transfer functions is performed through the direct cross-correlation between the injected maximum length linear feedback shift registers (LFSR) sequence and modulator outputs and then corrects these non-ideal effects by accurately modeling the transfer functions with programmable finite impulse response (PFIR) filters.




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FLASH ANALOG-TO-DIGITAL CONVERTER CALIBRATION

An analog-to-digital converter (ADC) is a device that can include a reference shuffler and a loop filter. An ADC can achieve better performance with incremental adjustment of a pointer of the reference shuffler, changing coefficients of the loop filter, and storing calibration codes of the ADC in a non-volatile memory. By incrementally adjusting a pointer of the reference shuffler, a calibration can be performed more efficiently than with a random adjustment of the pointer. By temporarily changing the loop filter coefficients, a greater amount of activity can be introduced into the loop filter. This activity can allow the calibration to proceed more efficiently. By storing the calibration codes in a non-volatile memory, a search space for calibration codes can be reduced. Thus, a calibration can occur more quickly, and the calibration itself can be improved.




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FREQUENCY-DOMAIN ADC FLASH CALIBRATION

A flash analog-to-digital converter (ADC) includes comparators that convert an analog input signal to a digital output signal. Offsets of these comparators introduce noise and can hurt the performance of the ADC. Thus, these comparators are calibrated using calibration codes. Conventional calibration methods determine these calibration codes by removing the ADC from an input signal. Otherwise, it is difficult to distinguish the noise from the signal in the calibration measurement. In contrast, an embodiment can determine the calibration codes while the ADC converts the input signal to a digital signal. Such an embodiment can be achieved by a frequency-domain technique. In an embodiment employing a frequency-domain power meter, an input signal can be removed from the power measurement. This removal enables accurate measurement of in-band noise without having the measurement be corrupted by input signal power.




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CIRCUIT AND METHOD FOR CONVERTING ANALOG SIGNAL TO DIGITAL VALUE REPRESENTATION

A circuit and a method for converting an analog signal to a digital value representation is disclosed. In one aspect, the circuit includes an incremental sigma-delta analog-to-digital converter (ADC). The circuit further includes a first input line for providing a primary analog signal representing a sensor measurement to the incremental sigma-delta ADC. The circuit further includes a second input line for providing a secondary analog signal to the incremental sigma-delta ADC. The incremental sigma-delta ADC receives the primary and secondary analog signals during a first period (TADC1) and a second period (TADC2), respectively. The circuit further includes a filter configured to weight the digital values in a sequence of digital values output by the incremental sigma-delta ADC, and to output a single digital value representing the sensor measurement.




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INPUT PATH MATCHING IN PIPELINED CONTINUOUS-TIME ANALOG-TO-DIGITAL CONVERTERS

System and methods for input path matching in pipelined continuous-time Analog-to Digital Converters (ADCs), including pipelined Continuous-Time Delta Sigma Modulator (CTDSM) based ADCs, includes an input delay circuit disposed in a continuous-time input path from an input of an analog input signal to a first summing circuit of the continuous-time ADC. At least one digital delay line is disposed between an output of an earlier stage sub-ADC (of a plurality of pipelined sub-ADCs) and a sub-digital-to-analog converter (DAC) that is coupled to the first summing circuit, and between the earlier stage sub-ADC and a digital noise cancellation filter. The digital delay line(s) is configured to enable calibration of delay of output of the earlier stage sub-ADC provided to the sub-DAC and the digital noise cancellation filter in accordance with process variations of the input delay match circuit to minimize residue output at first summing circuit.




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Three phase sulfur separation method with interface control

A liquid separator system having a gas phase zone, an aqueous phase zone and a denser liquid zone is used to separate mixtures of fluids. The separator can be used for separating molten sulfur from liquid redox solution or reslurry water. The system includes a vessel with a top part and a bottom part. The vessel has a larger diameter at the top part than at the bottom part. The system also includes an inlet for introducing a redox solution or reslurry water and molten sulfur, which is denser than redox solution or reslurry water, into the vessel. An outlet near the bottom part of the vessel allows a flow of the molten sulfur from the vessel. An interface control structure senses an interface level between the redox solution or reslurry water and the molten sulfur, and the interface control structure controls the flow of molten sulfur from the outlet. The interface control structure is adjusted to optimally alter the vertical height of the interface level within the vessel so that the residence time of the molten sulfur in the vessel does not decrease as the sulfur production throughput decreases, and so that the interface area of the molten sulfur and the redox solution is reduced as the sulfur throughput decreases. A pressure controller monitors the pressure in the vessel and adds or removes gas from a gas phase zone in the vessel to maintain a predetermined pressure regardless of the vertical height of the interface.




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Method for preparing uranium concentrates by fluidized bed precipitation, and preparation of UO3 and U3O8 by drying/calcining said concentrates

Method for producing a uranium concentrate in the form of solid particles, by precipitation from a uranium-containing solution using a precipitating agent, in a vertical reactor comprising a base, a top, a central part, an upper part, and a lower part, the solid particles of the uranium concentrate forming a fluidized bed under the action of a rising liquid current which circulates from the base towards the top of the reactor successively passing through the lower part, the central part and the upper part of the reactor, and which is created by introducing a liquid recycling current (flow) at the base of the reactor, said liquid recycling current being tapped at a first determined level (A) in the upper part of the reactor and sent back without settling to the base of the reactor, excess liquid being also evacuated via an overflow located at a second determined level (B) in the upper part of the reactor; a method in which the upper limit (C) of the fluidized bed of solid particles is controlled so that it is positioned at a level below the first and second determined levels.




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Process for the production of granules from powdered materials

The present invention relates to a process for the wet production of granules from powdered materials, in particular raw materials for the production of glass. The process of the invention comprises the following successive steps: (i) the powdered materials to be granulated are divided into at least two portions: a first portion and a second portion; (ii) a binder liquid is added to the first portion of powdered materials; (iii) the first mixture thus obtained is agglomerated in the granulator in order to obtain granules (a); (iv) the second portion of powdered materials is added to the granulator; and (v) the new mixture obtained is agglomerated in the granulator in order to obtain granules (b). This sequenced granulation process allows granules to be obtained that have a degree of moisture that assures their stability and their ease of handling eliminating the drying step.