46results about How to "Fix timing issues" patented technology

The invention provides an industrial intelligent camera which comprises an imaging module, a master control module, a transmission module, a power module and a storage module. The imaging module comprises a CMOS image sensor and a peripheral circuit; the master control module is an FPGA chip and comprises an image collecting control module, an image pre-processing module, an image advanced processing module, a transmission control module and a storage control module. According to the industrial intelligent camera, all image processing functions are achieved through the FPGA chip, the complex interactive design of an FPGA and a DSP is avoided, and the advantages that algorithms of the FPGA is achieved through a hardware circuit, so that the processing speed is high, and performance is stable are sufficiently played; the industrial intelligent camera is high in integration degree, small in overall size, small in weight, less in power dissipation and particularly suitable for application occasions with high requirements for the camera size and the image processing speed.

The invention discloses a method and a system for realizing bus connection. The method comprises the following steps that: a main module buffer receives a transmission request, initiated by a main module, of an advanced expandable interface bus; the main module buffer writes information according to the transmission request; when the main module buffer has the information, the main module buffer transmits the information to a slave module buffer; and the information is transmitted buffer to a slave module by the slave module. By the method and the system for realizing the bus connection, which is provided by the invention, as the main module buffer and the slave module buffer are adopted between the main module and the slave module, the signal input/output between the main module and the slave module is connected with a register, and the time sequence optimization of the bus connection can be guaranteed to the maximum extent.

The invention relates to a data decompression device and method based on an FPGA. The data decompression device comprises a physical layer interface module, a TCP/IP (Transmission Control Protocol/Internet Protocol) module, a sub-packaging module, a decompression module and an output module which are connected in sequence, the sub-packaging module is further directly connected with the output module, and the physical layer interface module is used for receiving network data, performing MAC layer analysis on the network data and then transmitting the network data to the TCP/IP module; the TCP/IP module is used for performing TCP analysis on the network data to obtain application data; the subpackaging module is used for segmenting and combining the application data to obtain a ZIP data packet and uncompressed data; the decompression module is used for decompressing the ZIP data packet to obtain decompressed data; and the output module transmits the decompressed data and the uncompresseddata to a computer. Compared with the prior art, the data decompression based on the FPGA can effectively replace a software decompression method, the CPU occupancy rate is reduced, the data delay isreduced, the data throughput is improved, and the purpose of quickly and accurately decompressing the data is achieved.

The embodiment of the invention discloses a time sequence optimization circuit and method, a chip and electronic equipment, the electronic equipment comprises the chip provided with the time sequence optimization circuit, the time sequence optimization circuit comprises a first register, a second register and a third register, and the third register is a duplicated register of the first register; the path distance between the first register and the second register is greater than that between the third register and the second register; when a time sequence report obtained by executing the time sequence analysis command indicates that time sequence violation exists in the first time sequence path, the second time sequence path is used for performing time sequence optimization processing; the path starting point of the first time sequence path is a first register, and the path end point is a second register; the path starting point of the second time sequence path is the third register, and the path end point is the second register. The time sequence optimization method comprises the following steps: executing a time sequence analysis command to obtain a time sequence report; and when the time sequence report indicates that the time sequence violation exists in the first time sequence path, performing time sequence optimization processing through the second time sequence path.

The invention provides a chip data processing method and system based on an AES-GCM. The method comprises the steps that S1, initializing a chip; S2, performing AES encryption on the binary number '0'by using a key k to obtain a variable H, and calculating the integer power of the variable H; And S3, grouping the plaintext data based on an AES algorithm, carrying out point multiplication on eachgroup of plaintext data and the integer power of the corresponding variable H in a finite field, and finally obtaining the ICV value of the authentication tag. According to the invention, the delay ofdata processing is reduced, the operation speed of the chip is improved, the number of triggers is reduced, and the area of the chip is reduced.

The invention discloses a storage module testing method and system, and belongs to the technical field of communication. According to the invention, the information of the acquired data signal of theto-be-tested storage module is judged so as to avoid a time sequence problem; Furthermore, read-write operation is further carried out on the to-be-tested storage module, window position information of the data signal is obtained, and a sampling clock is adjusted to enable an effective window of the data signal to be maximum, so that the purpose of automatically and quickly testing the storage module is achieved, and the testing efficiency is improved.

The invention discloses a CMMB (China mobile multimedia broadcasting) based RS (reed-solomon) coding system and an implementing method thereof. The CMMB based RS coding system comprises an SDRAM (synchronous dynamic random access memory) controller, a byte interleaver, an internal memory and an RS coder, wherein the SDRAM controller is used for receiving information code streams and storing accessing check codes, the byte interleaver is used for subjecting accessing information codes and the check codes to byte interleaving, the internal memory is used for caching the accessing information codes and the check codes, and the RS coder is used for coding the information codes. The implementing method includes that the SDRAM controller receives the information code streams, the information codes are subjected to byte interleaving by the byte interleaver, the information codes interleaved are stored in the internal memory and are read and encoded and the like. By the CMMB based RS coding system and the implementing method thereof, internal resources of an FPGA (field programmable gate array) is effectively saved, and operation load is reduced, so that the problem about time sequence of the FPGA is solved, the low-end FPGA can be utilized for design, and normal work in complicated environment can be guaranteed.

The invention discloses a mobile charging system and a controlling method thereof. The mobile charging system comprises an energy storage battery and a battery management system, wherein the input end of the energy storage battery is connected to a recharging interface of equipment through a switch S1, the output end of the energy storage battery is connected to a charging interface of an automobile through a switch S2 and a switch S3, a DC/AC charging module is arranged between the switch S2 and the charging interface of the automobile, an auxiliary power supply is arranged between the switch S3 and the charging interface of the automobile, the battery management system is connected with a switch S4, a contact A of the switch S4 is connected to the recharging interface of the equipment, and a contact B of the switch S4 is connected to the output end of the auxiliary power supply, a mobile charging controller is arranged between the switch S3 and the auxiliary power supply, the mobile charging controller is connected with a switch S5 used for selecting operation states, and the mobile charging controller can be used for controlling the switches S1-S4 through the operation state of the switch S5. According to the mobile charging system and the controlling method thereof, standby loss of the system is reduced, over discharge of the battery is prevented, the service life of the battery is prolonged, and meanwhile the problem of time sequence in the process of automobile charging and equipment recharging can be solved.

The invention provides an accounting billing method and device. The method includes the following steps that: after the authentication of a user succeeds, a broadband remote access server (BRAS) obtains locally-stored bill information for the user, wherein the bill information contains consumed traffic or online duration of offline users which is calculated by the BRAS in an AAA (authentication-authorization-accounting server) inaccessible period; and an accounting message carrying the bill information is sent to the AAA server, so that the AAA server can perform deduction for the user according to the bill information. According to the accounting method and device provided by the embodiments of the invention, after online authentication of the user succeeds, the accounting message carrying the bill information is sent to the AAA server immediately, and therefore, the times sequence problem of the uploading and analysis of the bill information, and the going online again of the user can be avoided, and the AAA server can immediately perform deduction according to the bill information.

The invention discloses a channel state information reference signal (CSI-RS) processing method. The method comprises the steps of detecting whether CSI-RSs are enabled or not and whether configuration parameters of the CSI-RSs are changed or not, wherein the CSI-RSs comprises a zero power CSI-RS and a non-zero power CSI-RS; judging CSI-RS subframes which satisfy a real existence condition according to a theoretical value of CSI-RS time-frequency resource location information, a long term evolution (LTE) system and a paging configuration parameter, when it is detected that the CSI-RSs are enabled and the configuration parameters of the CSI-RSs are changed; and carrying out conflict processing on the zero power CSI-RS and the non-zero power CSI-RS in the really existing CSI-RS subframes. The invention also discloses a CSI-RS processing device.

The invention discloses a gated clock conversion method based on a recursive multi-way tree. The gated clock conversion method comprises the following steps: 1, acquiring a multi-way tree hierarchicalstructure of a module; 2, searching a gated clock module name and a clock output port name of the gated clock module to obtain a gated clock signal chain table; 3, searching a signal name of the gated clock signal linked list, obtaining names and positions of a gated clock signal and a derivative clock, analyzing the grammar type of the row, and storing the grammar type as a solved gated clock linked list; 4, simplifying linked list node identification fields, reserving module names, and deleting linked list repetitive elements to obtain a modified position linked list; 5, according to the grammar type of the modified position linked list signal, constructing a new modified linked list from the new modified content and replacing the new modified linked list; and 6, removing logic AND operation between the gating enable and the clock, and adding logic AND operation of the upper-level gating signal and the current-level gating signal. Platform verification of large-scale digital logic containing a gated clock becomes possible, and the method can be widely applied to the technical field of integrated circuit design.

The invention relates to a data forwarding method and device. The method comprises: a resource node generates a data forwarding path; the data forwarding path comprises M physical nodes, wherein M is a positive integer which is greater than one; the resource node receives an N-th answering signal Ack N transmitted by an N-th physical node on the data forwarding path, wherein the Ack N indicates that the N-th physical node receivs the N-th data transmitted by the resource node, and N is a positive integer which is located between one and M-1; and responding to the Ack N, the resource node transmits the (N+1)-th data to an (N+1)-th physical node which is a direct upstream node of the N-th physical node on the data forwarding path. The method and the device can solve a problem of the time sequence of the forwarding of table data of various physical data, thereby guaranteeing that a packet cannot be lost, needing no employment of additional networking protocol, and increasing no cost.