4results about How to "Improve startup speed" patented technology

The application discloses a memory allocation management method and device, and relates to the technical field of computers. A specific embodiment of the method comprises the following steps: in response to a page fault exception caused by a virtual machine process accessing a user space, allocating physical memory for the user space, and obtaining a memory type identifier of the physical memory; in the case that the memory type identifier is a preset identifier, judging whether the physical memory is idle memory, and in the case that the physical memory is not idle memory, performing a zero operation on the physical memory, so that the physical memory becomes idle memory; wherein the read bandwidth of the physical memory with the preset identifier is greater than the write bandwidth. The embodiment can greatly improve the creation and startup speed of a virtual machine based on a memory with a read bandwidth greater than a write bandwidth.

The application provides a switch frequency determination method and device for an LCC resonant converter, the method comprising: obtaining an input voltage and an output voltage of the LCC resonant converter; determining a starting mode in which the LCC resonant converter is currently located by using the output voltage; determining a calculation program corresponding to the starting mode by using the starting mode in which the LCC resonant converter is currently located, wherein the calculation program is an operation logic program designed for the starting mode by using a field programmable logic gate array; inputting the input voltage and the output voltage into the field programmable logic gate array, and calculating the switch frequency of the LCC resonant converter by using the calculation program, so that the switch frequency determination method improves the adjustment rate of the switch frequency of the LCC resonant converter, the rising speed of the output voltage, and further improves the dynamic response speed of an existing power supply.

The invention relates to the technical field of touch keys, and discloses a self-adaptive capacitive touch key system and a self-adaptive adjusting method. The system comprises a reference capacitor, a touch capacitor, a memristor, an auxiliary discharge resistor, a first switch, a second switch, a third switch and a microcontroller. Switching between a self-adaptive adjusting mode and a touch detection mode can be achieved by controlling the states of all the switches and all the elements through the microcontroller. And in the self-adaptive adjustment mode, the resistance value of the memristor is automatically adjusted according to the capacitance drift of the reference capacitor by utilizing the discharge process of the reference capacitor through the memristor, so that the reference time jointly determined by the memristor and the reference capacitor is kept constant. And hardware-level real-time self-compensation is realized, the intervention of a software algorithm is not needed, and the problems of false triggering, response failure and the like caused by reference capacitance drift due to environment temperature and humidity changes and material aging of a traditional capacitive touch key are solved. The circuit has the advantages of fast response, low power consumption, high reliability and nonvolatile memory capability.

The application relates to the technical field of plastic recycling, and discloses a cooling device for plastic film production based on waste regeneration, which comprises a supporting assembly, the supporting assembly comprises a supporting seat, the supporting assembly further comprises a limiting frame fixedly arranged at the top outer wall of the supporting seat, a connecting groove opened in the inner wall of the limiting frame, a water passing groove opened in the inner wall of the supporting seat, a side opening groove opened in the side wall of the supporting seat, a limiting ring fixedly arranged at the side wall of the limiting frame, a connecting assembly rotatably arranged at the inner wall of the limiting frame, a gear fixedly arranged at the outer wall of the connecting assembly, a passing assembly rotatably arranged at the outer wall of the connecting assembly, and an auxiliary assembly rotatably arranged at the outer wall of the end of the connecting assembly far from the passing assembly. The device adopts a double-side double-water-way synchronous water feeding design, can simultaneously supply water to the two ends of the cooling roller in the starting stage, rapidly fills the internal multilayer water storage layer, shortens the filling time of the cooling medium, improves the equipment starting speed and heat exchange response efficiency, and solves the problems of slow filling of traditional single-side water feeding and the like.