34results about How to "High speed conversion" patented technology

A piezoelectric element (2) composed of a reflective element (1), a thin film piezoelectric body (3), electrodes (4a, 4b, 4c), and an elastic body (5) is formed on a substrate (7). Voltage, the thin-film piezoelectric body deflects and deforms, driving the reflective element. A plurality of piezoelectric elements are arranged in parallel along the longitudinal direction (8), and a torsion spring (6) is arranged in a direction perpendicular to the longitudinal direction to connect and maintain the reflective element on the substrate. Furthermore, the reflective element is connected to the piezoelectric element through the strain absorbing part (10). According to this configuration, the torsion spring is used as the rotation axis (9), and the reflection element is tilted about the rotation axis.

The invention provides a time domain A / D converter group that comprises a plurality of A / D converters. Each A / D converter comprises: a delay lock loop circuit, which takes a main clock supplying a clock to an integrated circuit as an input, performs frequency division on the main clock to output a multi-phase clock with different time sequences; a logic circuit, which synthesizes a plurality of clocks corresponding to Gray codes according to the multi-phase clock; and a plurality of A / D converters next to each other in space. The delay lock loop circuit and the logic circuit are dispersed in the integrated circuit; the A / D converters supply multiple clocks to one A / D converter module; each A / D converter comprises a comparator that compares an input signal with a reference voltage to generate a comparison output signal and an internal A / D converter; and the internal A / D converter comprises a latch, which maintains the logic state of the multi-phase clock according to the time sequence provided by the comparison output signal and a counter, which counts the clock having the largest width of the plurality of clocks and stops counting according to the comparator.

The invention provides a PVC switching control method for an ATM communication network which allows high speed changeover of a connection upon occurrence of / release from a trouble and is superior in reliability and maintenance facility and simple in control. A master PVC connection and an OAM connection are set between two ATM exchanges, and a bypassing PVC connection and an OAM connection prepared in advance for bypassing are set between the two ATM exchanges. If occurrence of / release from a trouble with and of the master PVC connection is recognized by the ATM exchanges using an OAM function, then the operative PVC connection is switched between the master PVC connection and the bypassing PVC connection.

The invention provides a PVC switching control method for an ATM communication network which allows high speed changeover of a connection upon occurrence of / release from a trouble and is superior in reliability and maintenance facility and simple in control. A master PVC connection and an OAM connection are set between two ATM exchanges, and a bypassing PVC connection and an OAM connection prepared in advance for bypassing are set between the two ATM exchanges. If occurrence of / release from a trouble with and of the master PVC connection is recognized by the ATM exchanges using an OAM function, then the operative PVC connection is switched between the master PVC connection and the bypassing PVC connection.

The invention discloses a high-energy-efficiency and high-precision orthogonal two-frequency divider. The orthogonal two-frequency divider is characterized that a first orthogonal unit and a second orthogonal unit are connected to form a loop. The first orthogonal unit and the second orthogonal unit are simultaneously controlled by differential input clock signals. The connection modes and control time sequences of the differential input clock signals in the first orthogonal unit and the second orthogonal unit are opposite to each other. Orthogonal two-frequency division signals are obtained at the positive output end OUT1 and negative output end OUTB1 of the first orthogonal unit, and the positive output end OUT2 and the negative OUTB2 of the second orthogonal unit. The orthogonal two-frequency divider is based on a digital circuit structure; no passive device and tail current source are employed; high-speed conversion can be obtained under a low power source voltage in high energy efficiency; and the orthogonal two-frequency divider has the advantages of technological flexibility and portability.

The present invention relates to a formula (II) shown hydrindene-1,3-dione compound catalysis synthetic method which is as follows: in an organic solvent and under a nitrogen atmosphere, in the presence of a catalyst, an oxidant, and an organic ligand and an adjuvant, self cyclization of a formula (I) compound is performed, the formula (II) compound is obtained by after-treatment after the end of the reaction, the method uses the new catalyst, the oxidant, the organic ligand, the organic solvent and the adjuvant for comprehensive selection and optimization to achieve material high-speed conversion, the yield of the target product can be greatly improved, the needs of industrial production can be better met, and the method has a broad market prospect.

The invention discloses a convolutional neural network-oriented dual-phase coefficient adjustable analog multiplication calculation circuit, which belongs to the technical field of calculation, calculation and counting. The multiplication calculation circuit includes a current-type network digital-to-analog conversion module, a dual-phase coefficient adjustable analog multiplication array, a pipeline-type analog-to-digital conversion module, and a calculation unit control module. The discrete-time circuit structure is used to realize the multiplication calculation of the neural network layer, and a new The signed multiplier design provides positive control and negative control, which can realize multiplication with signed bits and provide a wider range of voltage amplitudes.

The present invention relates to a process for the production of paper and board which comprises: (a) introducing one or more fillers, one or more anionic polysaccharides and one or more cationic agents into a mixing zone to form a filler composition; (b) introducing by means of a pump the filler composition into an aqueous suspension comprising cellulosic fibers; and (c) dewatering the obtained suspension. The present invention also relates to a process for the production of a filler composition which comprises: (a) introducing one or more fillers, one or more anionic polysaccharides and one or more cationic agents into a mixing zone to form a filler composition; (b) introducing by means of a pump the filler composition into a storage tank.

The invention provides a communication unit for converting an EtherCAT slave station into a Canopen master station on the basis of a DSP (Digital Signal Processor). The communication unit comprises an FPGA (Field Programmable Gate Array) chip, a DSP unit, and a CAN (Controller Area Network) module, wherein an EtherCAT protocol stack is embedded into the FPGA chip; the FPGA chip is used for completing capturing and splitting of an EtherCAT data frame and state monitoring of related state machines, and carries out data transmission with the DSP unit by a serial data bus; the DSP unit comprises an EtherCAT slave station data analysis algorithm unit, a process protocol conversion module and a CANopen master station protocol stack unit; and the CAN module is used for completing supporting and communication on the CANopen master station protocol stack unit of the DSP unit. The communication unit provided by the invention has the characteristics of high-speed calculation, high-speed conversion and the like, and efficiently completes addition of power electronic equipment only with a Canopen communication interface into an EtherCAT control looped network.

The invention discloses an NAT method and system based on the mobile Internet. The method is achieved through mixed NAT mapping of mapping of a static IP address and mapping of a dynamic port. The method includes the steps that NAT is called at the exit of an IP layer and NAT is called at the entrance of the IP layer; NAT is called at the exit of the IP layer to transmit a data package to an NAT router; whether a routing table entry comprising the destination IP address of the data package exists or not is checked; whether an NAT table entry comprising an interior local IP address and an interior global IP address exists in an NAT address mapping table of a resource pool or not is checked; NAT is called at the entrance of the IP layer to transmit the data package to the NAT router; whether the routing table entry comprising the destination IP address of the data package exists or not is checked; whether a HASH table entry comprising an interior global IP address and an interior local IP address exists in the NAT address mapping table of the resource pool or not is checked. The NAT method and system based on the mobile Internet can easily identify a mobile communication terminal user and can perform user access source tracing and analysis.

The invention discloses an ASK-FSK converter and a conversion method, which relate to the field of optical communication and are invented for solving the problem that fast conversion of an ASK optical signal into an FSK optical signal cannot be realized in the prior art. The embodiment of the invention provides the ASK-FSK converter, which comprises a beam splitter, a light generator, a first optical coupler, a polarization modulator and a second optical coupler. Based on the ASK-FSK converter, the ASK optical signal can be split into two paths, wherein one path of the ASK optical signal interacts with continuous polarized light in the polarization modulator to change the polarization state of the polarized light to convert the polarized light into an optical signal which is logically opposite to the ASK optical signal has a frequency different from that of the ASK optical signal; and then the optical signal which is logically opposite to the ASK optical signal is coupled with the other path of the ASK optical signal to obtain the FSK optical signal. The converter and the method are suitable for fast conversion of the ASK optical signal into the FSK optical signal.

The invention discloses a high-speed three-state ADC (Analog-to-Digital Converter), which belongs to the technical field of analog-to-digital conversion of electronic signals. When a switch of a capacitance source works at a high frequency, high-speed sampling on input and output of the capacitance source is realized, and the output voltage and current quality of the capacitance source is improved. An analog signal Ui is converted into a high-level clamping comparison signal VH and a low-level clamping comparison signal VL according to different proportions respectively, and the voltage value of the VH is higher than that of VL; reference voltages Vh and VI compared with the VH and VL are set in logic and structure respectively; when VH is greater than Vh, Po is equal to 1; when VL is smaller than VI, Po is equal to 0; when VH is smaller than Vh and VL is greater than VI, Po is equal to Pi; input Uih corresponding to the Vh and input Uil corresponding to the VI form a voltage interval of the analog signal. According to the high-speed sampling applied to the constant-voltage output and constant-current output of the capacitance source, a plurality of structures of different voltage intervals are combined to realize high-speed ADC application of continuous voltage signal sampling and the like.

A level shift circuit includes a first circuit connected between a first power supply terminal (PST) and an output terminal (OT) of the level shift circuit to set OT to a first voltage (V1) when conducting, a second circuit connected between a second PST and OT to set OT to the second voltage (V2) when conducting, and a third circuit that receives an input signal and a feedback signal from OT so that, when OT=V2 and input=a third voltage (V3), the first circuit conducts, and when OT=V1, the first circuit is made nonconductive irrespective of the value of the input signal. The second circuit is made conductive and nonconductive, when the input=a fourth voltage (V4) and V3, respectively. A high / low relationship of V1, V2=that of V3, V4. The input between V3, V4 has a lower amplitude than the output signal between V1, V2.

The invention relates to an automatic high-speed metal tube cutting machine. The automatic high-speed metal tube cutting machine comprises a machine frame assembly and a shearing machine assembly. A lower hydraulic cylinder assembly is arranged at the bottom of the shearing machine assembly. A side hydraulic cylinder assembly is arranged on a side face of the shearing machine assembly. The shearing machine assembly comprises a main machine base, wherein an inner floating cutter assembly, an inner fixed cutter assembly, an outer floating cutter assembly and an outer fixing cutter assembly are arranged in the main machine base. The outer floating cutter assembly is sleeved with an upward-downward moving die and a leftward-rightward moving die, wherein the leftward-rightward moving die and the upward-downward moving die are tightly buckled, the lower surface of the upward-downward moving die is fixedly connected with a first piston rod of the lower hydraulic cylinder assembly, and a side face of the leftward-rightward moving die is fixedly connected with a second piston rod of the side hydraulic cylinder assembly. The automatic high-speed metal tube cutting machine has the advantages that no scrap iron exists, one time of cutting is completed within three seconds, noise is low, shearing accuracy is high, automatic cutting can be achieved, the automatic high-speed metal tube cutting machine is suitable for shearing workpieces with the fixed size and any lengths in batches, use is safe, man-machine work efficiency is high, the structure is firm, rigidity is high, vibration is small, the cutting size can be converted at a high speed, and operation and maintenance are easy and convenient.