2results about How to "Reduce speed requirements" patented technology

The invention provides a set top box data transmission control method and device and electronic equipment, and the method is applied to a server, and comprises the steps: obtaining the average network speed of a network broadband; whether the average network speed is smaller than a preset first threshold value or not is judged, if the average network speed is smaller than the preset first threshold value, a playing unit of the terminal is divided into a central area and an edge area, and the edge area surrounds the central area; intercepting a first to-be-played video of the first resolution to obtain a first video, the size of the first video being consistent with the size of the central area; intercepting a second to-be-played video with a second resolution to obtain a second video, the size of the second video being consistent with the size of the edge region, and the first resolution being higher than the second resolution; and sending the data of the first video to the terminal to enable the terminal to play the first video in the central area, and sending the second video to the terminal to enable the terminal to have the effect of solving the problem of video playing lagging when the network is slow.

This invention proposes a nanosecond-level pulse integration measurement device, capable of determining the arrival time of the first pulse, integrating and holding a single optical pulse signal before A / D acquisition, thus reducing the speed requirements of the A / D circuit. It includes a PIN photodiode, a photocurrent integrator, an A / D acquisition circuit, and an FPGA controller; the photocurrent integrator, A / D acquisition circuit, and FPGA controller are connected sequentially; the PIN photodiode generates a photocurrent signal representing optical power when laser signals of different widths and frequencies illuminate it; the photocurrent integrator integrates and holds the photocurrent; the A / D acquisition circuit acquires a voltage signal representing the laser pulse intensity; and the FPGA controller determines the first pulse signal, the pulse arrival time, and controls the charging and discharging of the photocurrent integrator.