39results about How to "Solve signal distortion" patented technology

The invention discloses a low-capacity metal packaged silicon transient voltage suppressor and a manufacturing method thereof. The low-capacity metal packaged silicon transient voltage suppressor comprises a shell, an upper lead and a lower lead which are drawn out along two ends of the shell, and a transient voltage suppressor chip, a rectifier diode chip, a plurality of solder layers and two electrodes which are arranged in the shell, wherein the shell is made of glass Kovar alloy; the transient voltage suppressor chip is connected in series with the rectifier diode chip; a plurality of solder layers are arranged on two sides of the transient voltage suppressor chip and the rectifier diode chip respectively; the transient voltage suppressor chip and the rectifier diode chip also are connected with the electrodes respectively; and the two electrodes are connected with the upper lead and the lower lead respectively. The low-capacity metal packaged silicon transient voltage suppressor has the functions of a transient voltage suppressor and a rectifier diode simultaneously, has the advantages of small size, light weight, low manufacturing cost and low junction capacity, and is particularly suitable to serve as a protective device in high frequency lines.

A video process device includes: a display device rotatable with respect to a center point of a screen; a first screen dividing portion for processing first and second video signals into a double window video signal; a second screen dividing portion for processing the double window video signal and an inputted third video signal into a triple window video signal; and a controller for controlling the second screen dividing portion in order to transform a vertical and horizontal synchronization signal of the first, second and third video signals to correspond to the screen of the display device rotated by 90 DEG when the display device is rotated by 90 DEG . Accordingly, by realizing the triple window in consideration of the aspect ratio of 16:9 of the display device, problems such as image quality deterioration and signal distortion can be solved. Also, the opportunity to watch various broadcasting can satisfy a user's needs.

The application discloses a signal transmission method, device and computer-readable storage medium of a high-speed differential signal line of a circuit board. Among them, the method includes calculating the dielectric constant of the glass fiber strip and the gel prepreg according to the equivalent dielectric constant of each type of plate, the proportion of glass fiber cloth and the proportion of resin, and is used to determine whether to cover the glass fiber strip Distinguish the dielectric constant of the first area and the second area; automatically generate the transmission rate information of each signal transmission line in the high-speed differential signal line according to the glass fiber cloth density of the current model plate, the dielectric constant of the first area and the second area , determining the wiring path of the high-speed differential signal line according to the transmission rate information, so as to perform high-speed signal transmission based on the wiring path. On the basis of not increasing the manufacturing cost of the circuit board, it can effectively solve the impact of glass fiber effect on high-speed differential signal transmission, and ensure that the signal received by the receiving end does not have distortion caused by different signals arriving at the same time.

The invention discloses an intelligent service management system based on cloud computing. One path of the carrier signal receiving circuit accesses a time reference carrier signal when the cloud server normally receives the carrier signal through the RC frequency selection circuit; the other path generates a reference carrier frequency signal through an oscillation circuit; frequency fine tuningis carried out through control of a tuning circuit; resonance with a to-be-measured carrier frequency signal received by a cloud server in real time is realized; the offset calculation circuit calculates a frequency difference 1 between a reference carrier signal and a to-be-measured carrier signal through the first frequency difference circuit. The frequency difference 1 higher than 1000kHz is added to the second frequency difference circuit; a frequency difference 2 between the reference carrier signal and the frequency difference 1 is calculated and feeds bak to the first frequency difference circuit so as to reduce the the frequency difference 1; and the frequency voltage conversion circuit receives the frequency difference 1 through the low-pass filter, converts the frequency difference 1 into voltage, and adds the voltage as control voltage to a carrier modulation circuit of the data terminal transmitter to adjust a carrier signal transmitted by the transmitter.

The invention provides an image processing device, which comprises a virtual differential analog front end circuit. The front end circuit is used for receiving at least one image analog signal, and generates at least one digital signal. The virtual differential analog front end circuit comprises at least one conversion circuit, each conversion circuit comprises a clamper, an input buffer and an analog-to-digital converter, wherein when the number of the conversion circuits is larger than 1, various analog-to-digital converters receive the same comparative voltage.

The invention discloses a pre-distortion method and device based on a visible light communication system. The method comprises the following steps: acquiring a modulation signal; and performing inverse transformation on the modulation signal through a pre-distortion inverse transformation model, wherein the modulation signal acquires a linear signal after passing through an LED. The problem that the distortion correction technology is low in precision and high in complexity in the existing VLC system is solved, the method has the advantages of being simple in structure and low in complexity, and the operation resource of the system can be saved.