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Now showing items 1 - 16 of 2739

  • EQUALISATION CIRCUIT, DEVICE TO BE CHARGED, AND CHARGING CONTROL METHOD

    An equalisation circuit, a device to be charged, and a charging control method. The equalisation circuit (33) comprises: a first conversion unit (331), used for receiving a direct current voltage outputted by a first chip (131) and converting the direct current voltage outputted by the first chip into a first alternating current voltage; a first resonance unit (332) used for receiving the first alternating current voltage and converting the first alternating current voltage into a second alternating current voltage using a resonance method, the amplitude of the second alternating current voltage being greater than the amplitude of the first alternating current voltage; a first capacitive coupling unit (333) and a second conversion unit (334), the first capacitive coupling unit coupling the second alternating current voltage to the second conversion unit by means of a capacitive coupling method, and the second conversion unit converting the second alternating current voltage into a first charging voltage for charging a second chip (132).
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  • AREA EFFICIENT DIGITAL TO ANALOG AND ANALOG TO DIGITAL CONVERTERS

    A digital-to-analog converter (DAC) (100) for converting an M bit digital value to an analog signal includes a capacitive DAC (104) and a resistive DAC (116). The capacitive DAC (104) is configured to convert N most significant bits of the digital value to an analog signal. The resistive DAC (116) is configured to covert M-N least significant bits (LSBs) of the digital value to an analog signal. The resistive DAC (116) includes a coarse DAC (106) and a fine DAC (108). The coarse DAC (106) is configured to convert a most significant R bits of the M-N least significant bits to an analog signal. An output of the coarse DAC (106) is switchably coupled to a first capacitor of the capacitive DAC (104). The fine DAC (108) is configured to convert M-N-R least significant bits of the M-N least significant bits toan analog signal. An output of the fine DAC (108) is switchably coupled to a secondcapacitor of the capacitive DAC (104).
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  • SYSTEM AND METHOD FOR ROBUST AND LOW-COST MULTI-AXIS FORCE SENSOR

    Systems and methods according to present principles provide for three axis force sensing in a convenient and manufacturable way. In one implementation, a vibrating motor is attached at the fixed end of an anisotropic structure, such as a rod, which then vibrates in a circular motion. A monitor such as a 3-axis accelerometer is also attached to the anisotropic structure. The resulting motion is then mapped electronically for analysis. With no force applied, a circular motion is achieved. When a net force is applied to the free, vibrating end of the rod, the circular pattern which is traced out becomes distorted, e.g., progressively flattened into an ellipse, in a repeatable way which is directly proportional to the applied force. The axis of the applied force can be ascertained according to the direction in which the ellipse forms. Systems and methods according to present principles may be used in any application in which force sensing is needed, e.g., robotics, including robotic surgery.
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  • METERING DEVICE AND METHOD FOR MEASURING FLOW OF CARBON DIOXIDE

    The present invention relates to the technical field of preparation of a polyurethane foam material. Provided are a metering device (12) and method for measuring a flow amount of carbon dioxide. The metering device (12) has a simple structure and a small size, and can precisely control an amount of conveyed liquid carbon dioxide. Moreover, one end of a metering pump (25) is connected to a sliding block (28). The sliding block (28) is movable on a horizontal bar (24), such that a vertical travel distance of a piston (33) can be changed, thereby changing a flow amount of carbon dioxide. Furthermore, a water channel (61) is arranged in a cylindrical body (31) of the metering pump (25), such that a refrigerant medium can be introduced to the water channel (61), thereby enabling carbon dioxide to maintain a constant temperature.
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  • METHOD AND APPARATUS FOR FILE COMPACTION IN KEY-VALUE STORAGE SYSTEM

    A method and apparatus for file compaction in a key-value storage system, which relates to the technical field of data processing, for reducing the I/O bandwidth and memory resource required for performing the compaction operation such that during the compaction operation, speed of other operations is not affected, thereby enhancing the user experience. The provided method comprises: compacting the SSTable to be compacted according to its corresponding Delete Log so as to generate a new SSTable; keys corresponding to the non-newest values in the KV-Store system and stored in the SSTable to be compacted are recorded in the Delete Log, and Key-Value pairs corresponding to the keys in the Delete Log are not included in the new SSTable (S301); and deleting the SSTable to be compacted (S302).
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  • CROSS-PLATFORM GAME BATTLE METHOD AND APPARATUS, AND TERMINAL AND SYSTEM

    A cross-platform game battle method and apparatus, and a terminal and a system. The method comprises: acquiring a first operation of a first user starting a game on a first web page; in response to the first operation, sending a first request to a game server, wherein the first request is used for requesting the starting of the game; receiving a first response returned by the game server, and obtaining a game address according to the first response; and sending the game address to a second terminal, wherein the game address is used for enabling the second terminal to obtain a second web page, the second web page is a page for a second user to start the game, the second user corresponds to the second terminal, and the second user is a user other than game users on the first web page.
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  • DISTRIBUTED SYSTEM-BASED GATED LAUNCH METHOD, CLIENT END AND PLATFORM

    Provided in embodiments of the present application is a distributed system-based gated launch method, client end and platform. The distributed system comprises a plurality of service units independent from each other, each providing services for a plurality of service items. The service units comprise source service units and target service units, wherein the source service units are service units on which a service upgrade is not performed and the target service units are service units on which the service upgrade is performed. The method comprises: when a service operation for a target service item is detected by a client end, generating a service request, wherein, the target service item is a service item of switching from a source service unit to a target service unit in a gated launch process; determining a target service unit corresponding to the target service item; sending the service request to the target service unit; and receiving a service response information returned by the target service unit. The present application can adopt a gated launch in a distributed system to launch a new version.
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  • STARTUP BROADCAST SENDING METHOD AND DEVICE, STORAGE MEDIUM, AND TERMINAL

    A startup broadcast sending method and device, and a terminal. The method comprises: monitoring a startup completion broadcast message sent by a system after a startup initialization phase is completed (110); identifying a current startup completion phase when the startup completion broadcast message is monitored (120); determining, according to the current startup completion phase, a corresponding broadcast receiver which receives the startup completion broadcast message (130); and sending the startup completion broadcast message to the broadcast receiver (140).
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  • METHOD AND DEVICE FOR CONTROLLING BROADCAST RECIPIENT, AND MOBILE TERMINAL

    A method and a device for controlling a broadcast recipient, and a mobile terminal. The method comprises: acquiring at least one type of broadcast to which the reception has been subscribed since a first application has been registered; determining whether the at least one broadcast type comprises a preset broadcast type; in the case where the at least one broadcast type comprises a preset broadcast type, determining the first application as an invalidly registered broadcast application; acquiring a recipient queue of a target broadcast; and according to the determined invalidly registered broadcast application, performing optimization control of the recipient queue.
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  • METHOD AND DEVICE FOR MIGRATING VIRTUAL MACHINE AND VIRTUALIZATION SYSTEM

    A method, device and system for migrating virtual machines across virtualization systems. A first virtualization system where a source virtual machine is located specifies the temporary address of a destination virtual machine; after a second migration tool of a second virtualization system migrates a virtual machine to be migrated to the second virtualization system and generates the destination virtual machine, a first migration tool of the first virtualization system controls a migration agent on the destination virtual machine, and modifies the address of the destination virtual machine to be the address of the source virtual machine, so that the address of the virtual machine remains unchanged before and after migration, thereby shortening the service interruption time length caused by virtual machine migration.
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  • RNAI CONSTRUCTS FOR INHIBITING ASGR1 EXPRESSION AND METHODS OF USE THEREOF

    The present invention relates to RNAi constructs for reducing expression of the ASGR1 gene. Methods of using such RNAi constructs to treat or prevent cardiovascular disease, such as coronary artery disease and myocardial infarction, and to reduce serum non-HDL cholesterol levels are also described.
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  • COMPACTED GRAPHITE IRON ALLOY, RAIL VEHICLE BRAKE DISK AND CASTING METHOD

    Provided are a compacted graphite iron alloy, a rail vehicle brake disk and a casting method for same, in the technical field of friction brake materials. The chemical composition of the compacted graphite iron alloy and the relative mass percentages of the components thereof are: C: 3.3% to 3.5%, Si: 2.3% to 2.5%, Mn: 0.4% to 0.7%, Cu: 0.6% to 1.0%, Mo: 0.2% to 0.6%, Ni: 0.6% to 1.0%, P≤0.07%, S≤0.02%, the remainder being Fe. The compacted graphite iron alloy of the present invention shows excellent thermal conductivity, strength, abrasion resistance, and similar physical properties. Rail vehicle brake discs prepared using the alloy are less prone to thermal cracking and thermal cracks are less likely to expand.
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  • METHOD AND DEVICE FOR BINDING ACCOUNT NUMBER TO TOKEN KEY

    The present disclosure relates to a method and device for binding an account number to a token key. The method comprises: sending a binding request message carrying an account number to a server, so that the server generates an authentication link corresponding to the account number and a first token key; acquiring the authentication link and the first token key, and generating display information according to the authentication link and the first token key, so that a mobile terminal obtains encrypted information according to the first token key and sends an access request message carrying the authentication link and the encrypted information, and then the server receives the access request message and sends the encrypted information; acquiring the encrypted information, and obtaining a second token key according to the encrypted information; and after it is determined that the second token key is consistent with the first token key, sending a message of successful binding to the server, so that the sever binds the first token key to the account number. By means of the solution, a user does not need to backfill token information in the whole process, thereby reducing the complexity of user operations, and improving the user experience.
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  • LOW PAPR SEQUENCE DESIGNING METHOD FOR USE IN RADIO COMMUNICATION SYSTEM

    Disclosed is a low PAPR sequence designing method for use in a radio communication system. First, a related parameter of a designed sequence is set and multiple iterations are performed, in one of the iterations, generated according to the parameter is a sequence of a designated length having multiple 0 and 1 as elements in a Bernoulli distribution conforming to a designated probability density parameter, the generated sequence is filtered on the basis of a PAPR of the sequence, the parameter for the next iteration is updated on the basis of the filtered sequence, and when the last of the iterations is completed, a sequence of the least PAPR is mapped to produce a low PAPR sequence having -1 and 1 as elements. Compared with the prior art, the present invention allows designing of a low PAPR sequence of an arbitrary length, where the sequence comprises only +1 and -1 as elements, and provides great autocorrelation performance. The present invention allows a low PAPR sequence to be produced even in a condition in which a specific value is taken at a specific position in a sequence, thus further broadening applicable scenarios and range of applications of the present invention. The present invention is applicable in but not limited to the designing of a long training sequence of an OFDM system.
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  • SUPPORTED COBALTOSIC OXIDE CATALYST, AND PREPARATION METHOD AND USE THEREFOR

    A supported cobaltosic oxide catalyst, and a preparation method and a use therefor are disclosed in the present invention. The supported cobaltosic oxide catalyst comprises the following components: a noble metal, a noble metal oxide and a cobaltosic oxide, the ratio of the mass of noble metal elements to the total mass of noble metal elements and Co3O4 being 1-10:100, and the supported cobaltosic oxide catalyst being a one-dimensional structure. The preparation method being: in a diol system, coprecipitating cobalt salts and an aqueous deposition solution, then adding a noble metal saline solution, and then hydroheating, drying, and calcining to obtain the supported cobaltosic oxide catalyst, coprecipitation and hydrothermal synthesis both being used to prepare said catalyst. The preparation method is easy to carry out, and the catalyst obtained is uniform and stable. When used in a methane catalytic combustion reaction, the catalyst allows potentially for a 100% methane conversion rate when the reaction temperature of CH4 is 400°C or below. The catalyst demonstrates excellent activity in low temperature oxidation of methane.
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  • IN VITRO PREPARATION METHOD OF ROTAVIRUS DOUBLE-LAYER VIRUS-LIKE PARTICLES

    The present invention relates to an in vitro preparation method of rotavirus double-layer virus-like particles, comprising: purifying a rotavirus VP6 protein in a cracked supernatant, and performing in vitro assembly of double-layer virus-like particles formed by a VP2 protein and the VP6 protein. The proteins and the virus-like particles can be used to prevent or alleviate clinical symptoms caused by infection of the rotavirus.
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