144results about How to "Improve build speed" patented technology

This invention relates to processes and systems of rapid prototyping and production. Its features includes flexible material deposition along tangential directions of surfaces of a part to be made, thereby eliminating stair-shape surface due to uniform horizontal layer deposition, increasing width of material deposition to increase build up rate, applying the principles of traditional forming/joining processes, such as casting, fusion welding, plastic extrusion and injection molding in the fabrication process so that various industrial materials can be processed, applying comparatively low cost heating sources, such as induction heating and arc-heating. Additional features include varying width and size of material deposition in accordance with geometry to be formed and applying a differential molding means for improved shape formation and surface finishing.

The invention provides a 12-bit intermediate-rate successive approximation type analog-digital converter and relates to the field of analog-digital converters. The 12-bit intermediate-rate successive approximation type analog-digital converter comprises a sampling network, a differential capacitor array connected with the sampling network, and a comparator circuit connected with the differential capacitor array, wherein the differential capacitor array comprises a first capacitor array connected with the positive-phase input end of the comparator circuit, and a second capacitor array connected with the negative-phase input end of the comparator circuit; both the first capacitor array and the second capacitor array are composed of 11 groups of binary-structured bit capacitors, and the bottom plates of the redundant capacitors of the second capacitor array are constantly connected with a common-mode voltage VCM. The 12-bit intermediate-rate successive approximation type analog-digital converter solves the problems of large capacitor area and high power consumption of a traditional binary capacitor type structure.

The invention is suitable for the technical field of a computer and provides a method and system for dynamically establishing an indoor positioning fingerprint database. The method comprises the following steps: A) collecting RSSI values of APs on a single wireless channel one by one along a preset moving path and recording position coordinates when the single wireless channel acquisition is finished; B) carrying out the step A) repeatively based on fingerprint sample collecting times preset in advance; C) dividing the moving path, obtaining coordinates of central positions of all fingerprint samples in a preset range with each dividing point being the center, and setting the coordinates of the central positions to be the position coordinates of the all fingerprint samples; and D) calculating the average value of the RSSI values of the fingerprint samples with the same position coordinates, the same wireless channel identification and the same AP identification, and storing fingerprint samples formed by the same position coordinates, the same wireless channel identification, the same AP identification and the RSSI average value obtained by calculation to the indoor positioning fingerprint database, thereby improving the establishing efficiency of the fingerprint database.

This invention discloses a method for setting up label switch path of MIPLS VPN tunnel including: a label switch router LSR in a network determines the forward equivalence FEC corresponding to the destination IP address of the MPLS VPN tunnel to distribute label to it firstly and set up a binding relation between the FEC and the distributed label and notifies the binding relation with the prior label to its upper reach LSR, which receives the binding relation notified by the lower reach LSR to process the binding relation with the prior label priorly. This invention also discloses a LSP set-up system and a device of the MPLS VPN tunnel.

The invention discloses a data transmission method, a data transmission device and a mobile terminal, belonging to the field of a terminal technology. The method comprises the steps of receiving a data transfer instruction used for transmitting an appointed file through first terminal equipment; detecting a sound state of the first terminal equipment, and generating appointed handshaking information according to the sound state; transmitting the appointed handshaking information through the first terminal equipment according to the appointed file to enable second terminal equipment and the first terminal equipment to establish data connection according to the appointed handshaking information; and transmitting the appointed file to the second terminal equipment through the data connection between the first terminal equipment and the second terminal equipment. According to the data transmission method, the data transmission device and the mobile terminal, operation in the data transmission process can be simplified, establishing speed of the data connection can be improved, and unnecessary time delay can be avoided.

The invention relates to a charge pump system, a method for generating reading and writing operation word line voltage by the aid of the same and a memory. The charge pump system comprises a standby mode charge pump, a work mode charge pump, a controlled switch, a load capacitor, a first voltage division circuit, a second voltage division circuit, a first comparator, a second comparator, an OR gate circuit and an oscillator, the standby mode charge pump is controlled by standby enable signals, the work mode charge pump and the controlled switch are controlled by work enable signals, output ends of the two charge pumps are connected, the load capacitor is respectively connected with the output ends of the two charge pumps and the ground, an output end of the standby mode charge pump is connected with the first voltage division circuit, two ends of the controlled switch are respectively connected with the output end of the work mode charge pump and the second voltage division circuit, the first comparator and the second comparator respectively compare corresponding reference voltages with outputs of the corresponding voltage division circuits, the OR gate circuit controls operation of the oscillator according to outputs of the two comparators, and an output end of the oscillator is connected with input ends of the two charge pumps. By the aid of the charge pump system, the method and the memory, generation speed of the reading and writing operation word line voltage can be increased.

The invention relates to the technical field of a sampling hold circuit in a pipeline analog-to-digital converter and discloses a double-sampling and fully-differential sampling hold circuit which comprises a first differential switched capacitor unit, a second differential switched capacitor unit and a double-folding branch operational amplifier, wherein, the first differential switched capacitor unit and the double-folding branch operational amplifier samples in high-time state at clock signals ph1 and phs and keeps in the high-time state at the clock signal ph2; and the second differential switched capacitor unit and the double-folding branch operational amplifier samples in the high-time state at the clock signals ph2 and phs and keeps in the high-time state at the clock signal ph1. By utilizing the sampling hold circuit of the invention, the output DC offset caused by the out-of-control of the operational amplifier is reduced, the accuracy of the sampling hold circuit is improved and the set-up speed of the sampling control circuit in a hold phase is improved.

The invention discloses a switch-type operation amplifier with low power consumption, which comprises a switch-type operation amplifying circuit, a common mode feedback circuit for providing a common mode voltage feedback signal to the switch-type operation amplifying circuit and a biasing circuit for providing a biasing voltage signal to the switch-type operation amplifying circuit and the common mode feedback circuit. The switch-type operation amplifier is in a manner of first level current mirror, of which the input level load uses an internal positive feedback structure to improve gain and the output level is in wide amplitude AB type; and while the amplifier is not needed to work, two switch tubes are used for closing the amplifying circuit, the biasing circuit and common mode feedback circuit totally; therefore, the power consumption is greatly reduced, and the switch-type operation amplifier with low power consumption can be widely applied to fields of analogue-digital converters, filters and the like.

The invention belongs to the technical field of pipeline analogue-to-digital converters, and relates to a novel Microsoft data access component (MDAC) structure applied to the pipeline analogue-to-digital converter. The MDAC structure comprises an operational amplifier, a first switched capacitor unit and a second switched capacitor unit, wherein each of the first and second switched capacitor units consists of a sampling capacitor CS, a feedback capacitor CF, a load capacitor CL and a switch. In a sampling phase PhiS, the sampling capacitor samples an input signal, and simultaneously the operational amplifier keeps voltage on the feedback capacitor to charge and discharge the load capacitor; in a resetting phase PhiR, the sampling capacitor is suspended, the input end of the operational amplifier is connected with a common mode level Vcomi, the output end of the operational amplifier is connected with a common mode level Vcomo, and the voltage on the feedback capacitor is reset; in a transmission phase PhiT, the operational amplifier performs margin amplification on a sample on the sampling capacitor, and transmits margin voltage; and in a clearing phase PhiC, the two ends of the sampling capacitor are both connected with the common mode level Vcomi, and charges are cleared to prepare for the next sampling. The MDAC structure can reduce the power consumption of the analogue-to-digital converter and increase a conversion rate.

The invention discloses a fast route setup method, comprising the steps of: A. destination node receives route request packet and packs the routing information carried in the route request packet into a corresponding route reply packet to source node of route request packet; and B. judging whether to be able to transmit the route reply packet: if yes, transmitting the route reply information-carrying packet through intermediate node to the source node and otherwise returning to the step A. And it also provides a fast routing establishing device. When receiving the first route request packet from the source node, the destination node waits for a period of time or collects a certain number of route request packets and packs the collected routing information into the same route reply packet and returns the route reply packet to the source node, thus reducing the number of routing control packets, reducing collision of routing control packets at MAC layer and speeding up routing establishment.

The invention provides an ad hoc network mode security association establishment method which is applied to a requester terminal and an authenticator terminal containing a self-signed certification authority. The method comprises the following steps: the requester terminal obtains a self-signed certificate issued by the self-signed certification authority from the authenticator terminal through an open system link established between the requester terminal and the authenticator and the preset name and password of a user; and the requester terminal uses the self-signed certificate to establish security association with the authenticator terminal. The invention further provides a terminal containing a self-signed certification authority. The invention does not need two rounds of five-time handshake processes to negotiate two groups of unicast keys and multicast keys, reduces the handshake processes of establishing security association, accelerates the security association establishment speed and reduces the terminal power consumption.

The present invention provides a method for setting up a playlist for an MTP device. The method comprises steps of: according to a given file type, obtaining a filehandle of a media file with the file type from the MTP device; according to the filehandle, obtaining a farther directory handle of each media file in media files with the file type; and sorting according to the farther directory handle, and obtaining the playlist, wherein the sorting is a continuous sorting for different media files in a same folder, and the playlist is saved. According to the method of the present invention, a setting procedure of the playlist is simplified, a setting speed is increased, and no damage is caused on the media files in the MTP device.

The public opinion role recognition and migration system based on heterogeneous domain migration relates to the fields of data mining and machine learning. In order to solve the problem that the existing technology can not effectively extract knowledge in the face of the complex information of the netizen, can not carry out transfer learning between different fields, and thus can not realize the indirect sharing of knowledge. The system is a public opinion role identification migration model based on the Markov logic network, includes a data predicate module, The structure learning module, theknowledge extraction module, the knowledge transfer module and the parameter learning module. The domain knowledge is converted into the knowledge which can be recognized by the model for structurallearning and extract the knowledge which needs to be transferred to the target domain to complete the knowledge transfer, and then the model after the transfer learning through the parameter learningmodule is obtained. By integrating the conversion complexity into the domain distance and considering the transfer learning boundary from single source domain to single target domain, the migration iseffectively extracted in the face of complex netizen information.

The invention provides a phase-locked loop circuit which comprises a frequency and phase detector, a charge pump, a loop low-pass filter, a first voltage-to-current conversion unit, a second voltage-to-current conversion unit, a current controlled oscillator, a frequency divider, a comparator, and a mode controller. The loop low-pass filter includes a switch S1, a switch S2, and a switch S3. The mode controller is used for controlling on-off of the switch S1, the switch S2 and the switch S3. According to the phase-locked loop circuit, the rise speed of a second control voltage signal VC2 supplied to the first voltage-to-current conversion unit can be improved, so that the second control voltage signal VC2 can reach the voltage value of a first control voltage signal VC1 supplied to the second voltage-to-current conversion unit in a short period of time, the establishment speed of the phase-locked loop circuit is improved, and the phase-locked loop circuit can make a response quickly.