30results about How to "With programmable" patented technology

The invention relates to the field of PCB coding, and provides a direct coding method for a PCB. The direct coding method comprises the following steps: directly coding the PCB by using a carbon dioxide laser, wherein the size of the focus light spot of the carbon dioxide laser is equal to or smaller than 0.14 mm; aiming at two-dimensional codes or one-dimensional codes in different sizes requested on different PCBs, coding is realized by controlling the power of the carbon dioxide laser and selecting different coding modes. The high-precision, high-speed and programmable carbon dioxide laser is adopted to directly code the PCB, aiming at two-dimensional codes or one-dimensional codes in different requested sizes, the coding depth can be controlled by controlling the power of the carbon dioxide laser, and appropriate coding modes are selected, so that the PCB is not damaged in the coding process, automation can be achieved in the production process, and the labor and the materials can be saved; laser coding is not affected by assembling steps or environment, can be directly acted on the PCB, and the process lasting property is good, so that the effect that the code lasts for the whole life of the PCB is achieved.

The invention discloses a supersonic vibration microscopic cell penetrating system based on piezoelectric ceramic driving. According to the invention, supersonic vibration characteristics of high energy and high efficiency are utilized. A procedure of stabbing a sinking-tip injection needle through a surface of an embryonic cell in a traditional microscopic injection operation is changed into a procedure of supersonic vibration interaction carried out by using a flat-tip injection needle upon a cell surface. During the procedure, cell surface tissues serve as supersonic vibration energy transmission media. When configured supersonic vibration energy exceeds a threshold of energy that the cell surface tissue can bear, a small area of rupture appears on tissues affected by the needle tip, such that the injection needle enters the cell through the cell surface tissues easily, and internal tissue scratching and damaging caused by the sharp needle tip are avoided. Therefore, a good base isestablished for subsequent microscopic injection operations, and embryonic cell survival rate can be greatly improved.

The invention relates to the field of nerve network hardware realization, in particular to a self-adaptation method for the computation of a single nerve cell node in a BP nerve network with a multilayer structure in different computation stages to realize different learning algorithm. A nerve cell processor is used for executing the computation of the single node on each layer of the BP nerve network. By programming a control register, a microcontroller can control an arithmetic device to execute the computation of three different kinds of BP nerve networks at the nerve cell node, wherein BP nerve network learning algorithm includes three kinds of typical learning algorithms, namely BP standard algorithm, additional momentum item algorithm and learning speed self-adaptation adjustment algorithm. A plurality of nerve cell processors can be connected in series to realize pipeline algorithm, so that the self-adaptation method has the characteristics of high flexibility and high practicability and is applicable in the application field of embedded hardware BP hardware nerve networks.

The invention relates to a high-speed and high-precision digital pulse generating circuit and a pulse generating method. Sequences of a programmable reference pulse and a variable pulse can be generated by utilizing the digital circuit; the pulse widths in various pulse sequences and the phase deviation between the pulse sequences can be adjusted through a precise timed step length; the circuit has a function of automatically calibrating the timed step length and can be adaptive to large-range temperature change and change influence of a power supply; the circuit is composed of a system clock input circuit, a register control circuit, a system clock pulse timer circuit, a ring oscillator pulse timing circuit, a logic unit delay pulse timing circuit and a pulse output circuit; the circuit has high speed and high precision; the generating circuit is realized full digitally; and the circuit is high in cost performance and can be used in the fields of electronic measurement, semiconductor test, radar control and high-precision industrial measurement and control.

The invention discloses a deep packet detection system and method based on a software defined network, and relates to the field of deep packet detection. The deep packet detection system includes network equipment which supports a DPI function, a DPI controller and a DPI server, wherein the network equipment which supports the DPI function is used for processing the part of the second layer to the fourth layer of a deep packet detection rule, the DPI server is used for processing the part above the fourth layer of the deep packet detection rule, and the DPI controller is used for controlling and coordinating the whole deep packet detection system, including the steps of synchronizing flow tables, configuring the network equipment which supports the DPI function and the deep packet detection rule on the DPI server, and coordinating the network equipment which supports the DPI function and the DPI server. The deep packet detection system based on the software defined network can improve the utilization rate of resources, and can also realize effective control of a DPI system, and the functions and performance of the DPI system are enhanced.

The invention relates to a realization method of Gray code M-QAM modulating parallel soft bit information computation, belonging to the field of wireless communication technology; the method comprises the following steps: signals at a transmitting end are processed as follows: the signal at the transmitting end is coded to obtain the coded signal, and Gray code M-QAM modulation is carried out to the signal; the signal which carries out Gray code M-QAM modulation carries out power normalization, so as to obtain the modulating signal with normalized power; the modulating signal with normalized power is transmitted. The signals at a receiving end are processed as follows: channel estimation is carried out to the signal which passes through an information channel and is received by the receiving end, so as to obtain channel impulse response; parallel soft bit information computation is carried out to the received signal according to the channel impulse response, so as to realize M-QAM soft modulation and obtain the soft modulation signal; a demodulation symbol is output and is transmitted to a coding module; in the realization method, a system modeling tool Ayatem Generator for DSP in XILIN company, which is applied to XILINX Virtex-4 FPGA is adopted.

The invention relates to the technical field of analog integrated circuits, more particularly to a design method for calibration circuits for pipeline ADCs. The method is performed through the following steps: building a behavior level model for a pipeline ADC and establishing a quantification relation between the design parameters of an ADC analog circuit and the design parameters of a digital calibration circuit on one hand and the ADC performances on the other hand; obtaining the design parameters of both the analog circuit and the digital calibration circuit, with which least power will be consumed from the ADC; designing circuits according to the obtained parameters; obtaining calibration coefficients by a calibration algorithm and referring to a DAC; and writing the calibration coefficients into the calibration circuits. With the method provided by the invention, a calibration circuit can be simplified a lot. In addition to that, as all work is done on a chip, less power and space are required. Compared to a back-ground calibration circuit on a traditional chip, up to 50% of power and space are saved. A calibration circuit requires an increase in size and power consumption only of the ADC core by 10% and 5% respectively with no increase in the size and power consumption of the chip. Further, the calibration system can be adapted for different working environments.

A switching power supply controlled by a single-chip microcomputer, relates to the technical field of the switching power supply. 220 V AC (alternating current) is respectively connected with a rectifier and filter circuit (1) and an auxiliary power supply circuit (2); the rectifier filter circuit (1) is connected with a PFC correction circuit (3); the PFC correction circuit (3) is connected with a DC converting circuit (4); the auxiliary power supply circuit (2) is connected with a PWM control circuit (5), and the PWM control circuit (5) is connected with the DC converting circuit (4); the DC converting circuit (4) is connected with the single-chip microcontroller (6); and the single-chip microcontroller (6) is separately connected with the PWM control circuit (5) and a protective circuit (7). According to the switching power supply, a control circuit composed of a single-chip microcomputer module is adopted; and under the support of detection and control software, via data sampling of the output current and voltage of the switching power supply and comparing the sampled data with given data, working condition of the switching power tube can thereby be regulated and controlled, and simultaneously the output current size is monitored to perform current control. The switching power supply has the characteristics of being programmable, powerful, easy to control, high in integration, etc.

The invention discloses a hysteresis comparator with a programmable threshold value. Corresponding high threshold voltage and low threshold voltage are selected as reference voltage of the hysteresis comparator through resistance voltage division; external input voltage is compared with two reference voltages through the hysteresis comparator and then a comparison result is output, so that the hysteresis comparator with a programmable threshold value has the characteristics of high and low threshold voltage programmability, high interference resistance and the like, and has a great application range in the field of integrated circuit design.

The invention relates to a programmable circuit board of a vending machine based on a single chip microcomputer. The programmable circuit board comprises an EMI (electromagnetic interference) absorbing circuit 1, a mode selection circuit 2, a 485 communication circuit 3, a CAN (control area network) communication circuit 4, a MCU (microprogrammed control unit) control circuit 5, a signal outputting circuit 6, a peripheral interface circuit 7 and a signal inputting circuit 8, wherein the signal inputting circuit 8 comprises a driving chip, and is used for inputting a signal to the MCU control circuit 5 through the driving chip; the MCU control circuit 5 is programmed, the signal outputting circuit 6 is controlled, and the MCU control circuit 5 is used for interacting data with a module through the 485 communication circuit 3 or the CAN communication circuit 4, so as to control the programming of the vending machine.

The invention discloses a portable fluorescence coding detection device. The portable fluorescence coding detection device comprises an upper housing and a lower housing; a USB interface, an indicating lamp, a digital display screen, a switch button and a signal processor are integrated on a circuit board; a focusing lens is arranged in the lower housing; a sealing ring is installed between the focusing lens and the circuit board; an LED light source and a photoelectric detector are integrated on the circuit board; the photoelectric detector is connected with the signal processor; and the lower housing is provided with a battery bin which is electrically connected with the circuit board. The portable fluorescence coding detection device is small in size and convenient to carry, and has thecharacteristics of rapidness, accuracy, portability, wide range and programmability; the device is provided with a plurality of LED excitation light sources and a photoelectric detector, and can quickly detect and judge near-ultraviolet to near-infrared multi-band fluorescence information emitted by a detected object; and programming setting can be carried out for corresponding fluorescence codesso as to adapt to different detection materials and methods.