33results about How to "Save internal resources" patented technology

The present invention discloses a projection angle acquisition method in the image reconstruction and a projection angle acquisition device for the image reconstruction. The present invention measures the moving speed of a bulb tube in the preset speed position of the moving track of the bulb tube, determines the moving speed of each projection position according to the measured moving speed of the bulb tube and acquires the corresponding projection angle of each projection position. Compared with the prior time-triggered scanning process, the present invention increases the accuracy of the projection angle; compared with the prior position-triggered scanning process, the present invention not only increases the accuracy of the projection angle but also reduces the realization cost. In addition, the moving speed of the bulb tube is premeasured and stored so as not to redetermine the speed of the projection position in each scanning process under the condition that the moving speed of the bulb tube has no great change, thus saving the internal resources of the CT machine; or the measurement of each scanning period further ensures the accuracy of the moving speed of each projection position, thus ensuring the accuracy of the projection angle.

The present invention discloses a data processing system and a data processing method. The address and data multiplexing bus pin of a CPU processor is connected with the data bus pin of a data storage device. When operating the data, the CPU processor sends control commands and address information by controlling the bus pin, the address and data multiplexing bus pin. A converter converts the control commands and the address information into control signals and address signals in the format of a data storage device and sends to the data storage device after receiving the control commands and the address information. The data storage device responds to the data operation of the CPU processor which is carried out by the address and data multiplexing bus pin and the data bus pin of the data storage device according to the control signals and the address signals. Through the present invention, the data operation speed of the CPU processor on peripheral components is not affected by the converter; when in the data operation, the data is processed without the converter, thus saving the internal resources of the converter.

The invention relates to an SRAM type FPGA double-port RAM single event upset prevention reinforcing device for a spacecraft, and belongs to the technical field of aerospace electronics. The single event upset prevention reinforcing device comprises a double-port RAM module and an arbitration refresher. The double-port RAM module comprises two sets of completely independent ports which are a firstport and a second port respectively, and each port comprises a data line, an address line, a read enable control line and a write enable control line. The user data is written into and read out of the double-port RAM module through the first port. The arbitration refresher reads the user data stored in the double-port RAM module through the second port and then writes the user data into the double-port RAM again under the condition that the user access data is not influenced, so that the double-port RAM is refreshed. According to the device, the problem of single event upset prevention reinforcement of the BlockRAM in the spacecraft SRAM type FPGA is solved.

The invention discloses a smart home monitoring method and system based on motion detection, and the system comprises a monitoring camera, a processor, a monitoring center, and a personal terminal, wherein the processor is connected with the monitoring camera, the monitoring center and the personal terminal. The system detects and judges a moving object through employing a three-frame difference method, extracts the moving object in a mode of hybrid Gaussian model background after the moving object reaches the standard, and transmits an image of the moving object to a home owner and other related persons in real time. The system does not carry out extraction when the object reaches a threshold value, saves the internal resources of the processor, can transmit a monitoring image to the related persons in real time after the moving object reaches the standard and is extracted, and improves the household safety.

The invention provides a full view video cylindrical surface image storage method and a system. The method includes that pixel data is received by row and first in,first out (FIFO) is used for caching. Whether an FIFO is full of the caching pixel data or not is judged. If it is full, a row of pixel data is continuously read out from the FIFO and the cylindrical surface transformation is carried out. New coordinates are obtained by calculating each pixel and the pixel addresses of each pixel are calculated. Data after the transformation of the cylindrical surface is divided into a plurality of data sections, wherein, among the divided data sections, the pixel address in every data section is consecutive and the next data sections belong to different rows. BURST is formed by the pixel numbers in the data section, the BURST proruption length in the internal memory, the storage unit digit of the internal memory and the pixel address of the first pixel in the data sections. The composed BURST data is stored into the internal memory. The full view video cylindrical surface image storage method and the system achieve the transformation of the cylindrical surface of the video image as well as improve the bandwidth availability ratio.

The invention discloses a smart home control method and device, a robot and a smart home control system. The method comprises the following steps: detecting whether a wakeup request for a robot terminal is received; if the wakeup request is received, calling a push pickup state page for push display, and entering the pickup state; in the pickup state, receiving voice information of a user, and carrying out recognition processing on the voice information so as to convert the voice information into first text information; sending the first text information to a cloud server for analysis, and receiving user intention based on the first text information fed back by the cloud server; analyzing the user intention, generating a control signal according to the analysis result, and controlling thestate of the smart home and/or acquiring the state information of the smart home according to the control signal; and the method can effectively improve the accuracy and convenience of smart home control.

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 low-energy-consumption fingerprint identification method under a mobile phone screen, which comprises the following steps: a mobile phone is in a dormant state and waits fora dormant wake-up event; the mobile phone is awakened and enters a fingerprint identification mode; the touch panel displays a fingerprint guide icon; after the touch panel receives the fingerprint pressing, the fingerprint guide icon is changed into pure color and the brightness is kept; the fingerprint identification module is awakened in a dormant state; after waking up, the mobile phone central controller sends an acquisition instruction to the fingerprint identification module, and the fingerprint identification module performs fingerprint image acquisition; after the collected image is interacted with the mobile phone center control, fingerprint recognition is carried out through a recognition algorithm, and a result is returned to the upper-layer application program. A good recognition environment is provided by utilizing the conditions of the mobile phone, so that the optical fingerprint sensor can carry out fingerprint recognition in any external environment; by combining theawakening mobile phone, the awakening fingerprint identification module and the mobile phone central control, the internal resources of the mobile phone can be effectively saved, and the limited endurance time of the mobile phone is ensured.

The invention discloses a system and method for rapidly determining a single phase earth fault. A structure of the system comprises a voltage transformer connected with electric signals, an isolation amplifier, a filtering rectifier, a hysteresis comparator, a monostable circuit capable of being repeatedly triggered and a microcontroller, wherein the microcontroller is connected with the hysteresis comparator and the monostable circuit capable of being repeatedly triggered. According to the system and method for rapidly determining the single phase earth fault, a characteristic of rapid responding and determining of hardware can be realized, and an advantage of flexible threshold value setting of software can be retained; during single phase earth fault determining operation, alternating current voltage signals are converted into a continuous pulse string via combination of a filtering rectification circuit and the hysteresis comparator; specifically the monostable circuit capable of being repeatedly triggered is adopted, and the pulse string is shaped into a signal pulse having a rising edge characteristic via which determining operation can be conducted via the microcontroller; via the method, a problem of threshold value jitter in a conventional hardware method can be effectively prevented, flexible threshold value setting can be realized via the microcontroller, strong universality can be realized, and high transferability is achieved.

The invention discloses a weapon system data processing method, and the method comprises the following steps: loading a bootstrap program, and acquiring and executing a system instruction in a system storage unit; receiving test data of the whole operation process of the weapon system according to the system instruction, and storing the test data in a data storage unit different from the system storage unit; carrying out the fault detection and analysis according to a fault processing program pre-stored in the data storage unit and the received test data, and sending an obtained detection result to an upper computer. The problems that in the prior art, data of the whole operation process of a weapon system cannot be stored, so that quick positioning cannot be conducted after faults occur in the operation process, and historical data cannot be analyzed and predicted can be solved.