12results about How to "Reduce switching delay" patented technology

The embodiment of the invention provides a memory leak detection method and device, equipment and a storage medium, and relates to the technical field of operating systems and performance tuning. The method comprises the following steps: monitoring memory allocation and release operation of a process by adopting a probe program; collecting memory use information of a stack of the process on memory allocation and release operation; through a collaborative caching mechanism of a kernel mode and a user mode, sharing memory use information to the user mode, and analyzing the memory use information in the user mode to obtain a comprehensive hotspot score representing a memory occupation growth trend of a stack; and determining whether the stack has memory leak according to the comprehensive hotspot score. Based on the method, whether the memory leaks or not can be accurately detected under the condition of low performance overhead.

The application discloses a plug-in micro set-top box multi-screen interactive content data adaptive processing method and system, relates to the technical field of broadcast television; the application is specially aimed at the scene of plug-in micro set-top box multi-screen interaction, and aims to solve the content processing bottleneck caused by local resource limitation and the problem of being unable to realize multi-screen interaction; based on a star structure formed by a central computing platform and a plug-in micro set-top box, the central computing platform is centrally managed, the plug-in micro set-top box only serves as light-weight data collection, streaming media receiving and processing, the plug-in micro set-top box uploads the collected device parameters to the platform, the platform adaptively processes content to generate streaming media, realizes multi-screen interaction through real-time processing, and considering predictive processing, distribution and resource scheduling, high adaptive efficiency, seamless switching, excellent picture quality and high scalability are realized.

The invention discloses an access method, device and equipment, a readable storage medium and a program product, relates to the technical field of communication, and aims to reduce switching time delay. The method comprises the following steps: receiving configuration information of a first node; according to the configuration information, setting the state between the terminal and the first node as a first RRC state, and setting the state between the terminal and a second node as a second RRC state; wherein in the first RRC state, air interface connection is not established between the terminal and the first node, and the second RRC state is an RRC connection state. According to the embodiment of the invention, the switching time delay can be reduced.

The application relates to the technical field of cross-domain multi-modal robots, in particular to a land-air robot with high ground self-adaptability and a control method thereof. The land-air robot comprises an air movement unit, a ground movement unit and an automatic driving module. The air movement unit is used for providing flight power for the land-air robot, so that the land-air robot has a flight mode. The ground movement unit is arranged at the bottom of the air movement unit, so that the land-air robot has a ground movement mode. The ground movement unit comprises a movement module and a five-link wheel-foot mechanism symmetrically arranged on the left and right sides of the land-air robot. The movement module is used for adjusting the posture of the five-link wheel-foot mechanism, so that the land-air robot realizes dynamic balance and posture righting in the ground movement mode. The automatic driving module is electrically connected with the air movement unit and the ground movement unit. The land-air robot in the application can move on land and in the air, and has good trajectory tracking performance in the land-air dual mode.

The invention provides a method for optimizing the frame rate of a two-dimensional map under a low-performance platform, and belongs to the technical field of geographic information systems, and the method comprises the steps: building LOD grades: carrying out the two-dimensional display of a map, and building the LOD grades of which the levels are greater than ten levels; setting an element display range: carrying out corresponding display level setting on each type of map elements; processing complex elements: setting different simplification strategies for different types of map elements with edge points exceeding a first preset threshold value, and utilizing a topology maintenance algorithm to ensure topology constraints; and data compression and reading: compressing and reading the original map data based on LOD grading establishment, element display range setting and complex element processing contents. Through the processing scheme provided by the invention, the frame rate stability when the low-performance platform operates the two-dimensional map is improved, the user interaction experience is improved, the equipment energy consumption is reduced, and the overall performance is improved.

This invention relates to the field of data communication technology and discloses a data communication method and system. The method includes: calculating the average RSRP of the primary 4G link over multiple consecutive periods; when the average RSRP is lower than the link switching threshold, switching the service route to the secondary 4G link in a hot standby state, and determining the secondary 4G link as a valid 4G link; triggering the airborne monitoring equipment and the remote monitoring platform to perform bidirectional authentication and generate a session key based on the valid 4G link; using the session key to perform SM4 source encryption on the monitoring data, adding a UTC timestamp, and performing channel encryption to obtain a double-encrypted message; transmitting the double-encrypted message to the secure access gateway of the remote monitoring platform; and having the secure access gateway of the remote monitoring platform perform channel decryption on the double-encrypted message to obtain a source-encrypted data packet, which is then forwarded to the remote monitoring platform. This method achieves seamless traceability of monitoring data throughout the entire flight process of a low-altitude aircraft.

The invention relates to a convolutional neural network acceleration technology, and provides a convolutional neural network accelerator designed on an ARM + FPGA heterogeneous platform. The ARM end generates a task descriptor containing Deadline, Cbudget and Bbudget, and predicts a budget; dynamic scheduling based on slack is adopted at the FPGA end, preemptive execution is implemented with tile as granularity, and context such as paraalsum and output buffer is stored / recovered at the boundary of the tile; and meanwhile, bandwidth shaping is carried out on DMA access by using a token bucket and a time slice, so that the bandwidth of each task does not exceed Bbudget. According to the scheme, DDR contention and delay jitter are reduced in a multi-task scene, and the real-time deadline satisfaction rate and the array utilization rate are improved.

This disclosure relates to the field of communication and interaction technology, specifically to an audio transmission method, an audio transmission device, and an audio transmission system. The audio transmission method applied to the transmitting end includes: acquiring a stereo audio stream; mixing a first-channel audio stream and a second-channel audio stream to obtain a mixed audio stream for the first channel processing at the receiving end; determining square wave signal data corresponding to the mixed audio stream based on the transmission information of each audio frame in the mixed audio stream, for the second channel processing at the receiving end; combining the mixed audio stream and the square wave signal data, and transmitting the combined data via a first connection and a second connection pre-established with the receiving end, respectively, so that the receiving end can switch between the first audio stream received via the first connection and the second audio stream received via the second connection, thereby improving switching accuracy, reducing switching latency, and ensuring the smoothness and continuity of audio playback.

This utility model discloses a seamless 15V dual power input switching circuit, comprising a connector circuit, a switching circuit body, and a protection circuit. The connector circuit includes first and second connector circuits for connecting to an external 15V power input, which are respectively connected to the switching circuit body, enabling switching between the two power sources. The protection circuit connects the first connector circuit and the switching circuit body to prevent reverse connection of the power supply and protect downstream components. Compared with traditional solutions such as contactors, this seamless dual power input switching circuit significantly reduces switching delay, enables zero-interruption switching, and significantly improves power supply reliability, meeting the needs of devices sensitive to power switching time. Furthermore, it uses a combination of general-purpose components, eliminating the need for a dedicated switching chip and effectively reducing BOM costs.

The invention provides a timing advance estimation method and device, and the method is applied to terminal UE, and comprises the steps: determining that a current state is before switching; and obtaining a timing advance (TA) of the candidate cell. According to the timing advance estimation method and device provided by the invention, before the conditional LTM switching, the UE acquires the timing advance TA of the candidate cell, so that the situation that the UE cannot acquire the TA of the adjacent cell in the conditional LTM switching is avoided, and the switching time delay is reduced.

The invention discloses an FSK and LORA dual-band adaptive switching method based on environmental perception, and the method comprises the following steps: collecting multi-dimensional parameters of a communication environment and a link state in real time, and carrying out the standardization processing of the multi-dimensional parameters; determining a weight coefficient of the multi-dimensional parameter based on an analytic hierarchy process, constructing a switching decision index in combination with the standardized multi-dimensional parameter, and setting an FSK frequency band starting threshold interval, an LOAR frequency band starting threshold interval and a transition state threshold interval according to a value range of the switching decision index; according to a real-time calculation result of the switching decision index, judging a communication frequency band which should be started at present, and if the communication frequency band is in a transition state, starting a frequency band pre-switching mechanism; and after the switching is completed, collecting a communication quality parameter under a new frequency band, if the communication quality does not reach a preset standard, triggering a model parameter fine tuning process, and dynamically optimizing a weight parameter and a threshold interval. According to the invention, the technical problem of how to realize self-adaptive and high-reliability switching of FSK and LORA dual bands based on environmental perception is solved.

The invention relates to an operating system scheduling method supporting RISC-V vector register resource dynamic management, and belongs to the field of computer system structures, and the method comprises the following steps: building a vector instruction data acquisition basis; constructing a vector register use state and a data field of resource configuration; a judgment and branch processing logic based on task configuration parameters is introduced into a context switching execution path, and a context switch context switching process is completed based on a vector register use state and a data field of resource configuration; on the basis of collection of vector instruction data, in the task running process, the use condition of a vector register is periodically collected, a vector use heat value is calculated and updated, vector register resource hierarchical configuration is completed on the basis of a calculation result, and meanwhile the use state of the vector register and a data field of resource configuration are updated. The method has the effects that the context switching overhead is reduced on the premise of ensuring the execution correctness, and the vector hardware resource utilization efficiency and the overall system performance are improved.