39results about How to "Save PCB space" patented technology

The invention discloses a module for starting multiple user programs by a single Flash. The module is characterized by comprising one programmable device and one FLASH chip connected with the programmable device, wherein multiple user program storage regions and one public program storage region are divided in the FLASH chip, each user program storage region stores one corresponding user program, and the public program storage region stores one corresponding EEPROM (Electrically Erasable Programmable Read-Only Memory) program; the programmable device can accept the access of multiple CPUs (Central Processing Units) and one FPGA (Field Programmable Gate Array) in parallel, thereby realizing that the public program storage region in the FLASH chip corresponds to the FPGA, and each user program storage region respectively corresponds to one CPU; and a bus switching module is designed in the programmable device, and the bus switching module can orderly transmit the user programs in the user program storage regions of the FLASH chip to the corresponding CPUs and transmit the EEPROM program to the corresponding FPGA.

The invention discloses a method for remotely upgrading an FPGA (Field Programmable Gate Array) program based on a ZYNQ chip. The related main devices comprise a zynq chip, an FPGA chip, a QSPI (QuadSerial Peripheral Interface) storage chip, an EMMC (Enhanced Media Card) storage chip and a DDR3 (Double Data Rate 3) memory chip. Program upgrading, the PC is connected with the ZYNQ through the Ethernet; the program is transmitted from the PC end to the ZYNQ external EMMC storage chip for storage; Each time the device is powered on, The application program in the PS of the ZYNQ moves the FPGA program in the EMMC storage chip to the PL part of the ZYNQ, the transmission logic of the SelectMap is compiled in the PL, and the program can be transmitted to the FPGA from the PL part through a SelectMap method so as to be started. The data migration from the EMMC storage chip to the PL is realized in the DDR3 externally matched with the ZYNQ after the mapping from the physical address to the virtual address is completed. According to the method, remote upgrading of the equipment can be realized.

The invention relates to a data processing method, a security chip device and an embedded system, belongs to the technical field of computers, and solves the problems of low data processing rate and incapability of adapting to encryption and decryption algorithms with large calculated amount in the prior art. The method comprises the following steps: S1, storing a first data stream in a first RAM;S2, storing the second data stream in a second RAM, processing the first data stream through an algorithm unit, and storing the processed first data stream in a first RAM; S3, outputting the processed first data stream to an upper computer, processing a second data stream through an algorithm unit, and storing the processed second data stream in a second RAM; and S4, outputting the processed second data stream to an upper computer, wherein T is a data processing period. Within the same T, the number of data processing is increased, the utilization rate of algorithm units is improved, and therefore the working efficiency is improved.

An Integrated Circuits (ICs) comprising a first output stage circuit and a second output stage circuit that share common input terminals and an output terminal of the first and second output stage circuits being selectably coupled between the input terminals and the output terminal in preference to the other.

The invention involves a photoelectric module component that can be inserted into the DWDM system and can be disassembled from the system.This component includes a photoelectric module (1) with multiple horizontal grooves (6) and multiple vertical slots (7). The groove and slot enable this optoelectronics module to insertLocated on multiple protrusions on the module installation device.The invention also integrates the EMI shielding function inside the component.

The invention discloses a full-bridge over-current protection circuit and a full-bridge over-current protection method. The full-bridge over-current protection circuit comprises a first gating module, a first comparator, a second gating module, a second comparator and a logic control module, wherein the first gating module multiplexes the first comparator, and can selectively judge whether over-current happens to two upper bridge arms or not; and the second gating module multiplexes the second comparator, and can selectively judge whether two lower bridge arms have overcurrent. Therefore, the use number of the comparators can be reduced to two, and the PCB space or the integrated chip area is greatly saved.

The invention discloses an intelligent greenhouse management system comprising an implementation terminal, a communication terminal and an application terminal; the implementation terminal comprises an Internet of Things gateway, a sensor terminal node, a control terminal node and an execution device, and the sensor terminal node comprises a temperature and humidity sensor, an illumination sensor and a human body infrared sensor; and the sensor terminal node is electrically connected with the Internet of Things gateway, another interface of the Internet of Things gateway is electrically connected with the control terminal node, the control terminal node is wirelessly connected with the execution device, the execution device comprises a greenhouse and a spraying crane assembly, and the communication terminal comprises a WIFI communication module, a cloud end and an Internet of Things cloud platform. The application terminal comprises a database, an alarm monitor and a remote control, one ends of the database, the alarm monitor and the remote control are wirelessly connected with the Internet of Things cloud platform, and the other ends of the database, the alarm monitor and the remote control are wirelessly connected with the user mobile terminal, so that the barriers of high workload and high time consumption of traditional agriculture are broken, the agricultural greenhouse is managed more efficiently and conveniently, and agriculture develops in a more intelligent and more accurate direction.

The invention provides a differential line winding method. The differential line winding method comprises the following steps: associating a first line of a differential line with a first hole; associating a second line of the differential line with a second hole, and causing the second line to protrude toward a direction away from the first line, so that a differential signal is matched at equallength. The method disclosed by the invention breaks through the limitation of 3W2S, and can solve the equal length matching problem of the differential signal just by using a winding unit combined with a through hole without generating problems in terms of SI of the signal. By adoption of the method, the PCB space needed for equal length winding of the differential high-speed signal on a differential line main circuit can be effectively reduced.

The present invention discloses an integrated surge immunity full-wave rectifier bridge structure. The structure comprises a plastic package body, four diode chips with the same technical indexes, anunidirectional TVS chip, and a first lead frame, a second lead frame, a third lead frame and a fourth lead frame; the unidirectional TVS chip has a P-type top surface, is fixed on the second lead frame, and is connected with the four lead frame through a wire; two of the four diode chips have P-type top surfaces, are fixed on the second lead frame and are respectively connected with the first leadframe and the third lead frame through wires; the other two of the four diode chips have N-type top surfaces, are fixed on the fourth lead frame, and are respectively connected with the first lead frame and the third lead frame through wires; and the first lead frame and the third lead frame are taken as input pins, and the second lead frame and the four lead frame are respectively taken as a positive pole pin and a negative pole pin. After the unidirectional TVS chip is arranged at a traditional rectifier bridge, the integrated surge immunity full-wave rectifier bridge structure is compact in layout, low in cost and thinner in thickness. The integrated surge immunity full-wave rectifier bridge structure is suitable for the technical field of electronic devices.

The invention provides a digital signal transmission circuit and a digital signal transmission device. The digital signal transmission circuit comprises a power supply and sampling circuit, which is provided with a power supply output end and a signal sampling end; a voltage and current conversion circuit, which is connected to a power supply through the power supply output end of the power supply and sampling circuit, wherein the signal input end of the voltage and current conversion circuit is used for receiving digital signals, and the output end of the voltage and current conversion circuit is connected with the signal sampling end of the power supply and sampling circuit; and a signal output circuit, which is connected with the output end of the power supply and sampling circuit. According to the technical scheme, the anti-interference capability in the digital signal transmission process can be improved, and the reliability of digital signal transmission is improved.