Sequence point

Abstract: PURPOSE:To minimize an idle cutting area and to improve efficiency by selecting a sequence point pass used for preparing the NC data for rough working based on a tool radius. CONSTITUTION:When a cutting path QLi for rough processing is outputted with an i-th sequence point pass PLi, the next cutting pass for rough processing is prepared and outputted with a sequence point path PLi' closest to an i-th sequence point path PLi of the i-th sequence point path PLi out of the sequence point pathes away by a radius Tr or above of a tool 21 for rough processing. Thus, with plural digitized sequence point path data, the rough working is executed for a work with the tool 21 of a prescribed radious Tr, and then, a small idle cutting area is sufficient and the efficiency is improved.

Abstract: A method for estimating channel of block mode in power line communication system includes receiving 64 point pseudo-random sequence P(n) assign through channel in synchronous frame, finding out mode maximum value in 16 point value and applying 25% of this mode value as threshold to clear off all values less than threshold in 16 points then adding 112 number on 16 point sequence in order to use it as sequence point of zero to form 128 point sequence used as H(k), carrying out 128 point quick Fourier transform on said 128 point sequence (PS) to obtain new 128 PS being multiplied by H(k) to obtain another 128 PS then dividing it by square of H(k) mode.

Abstract: The invention discloses an estimation method of a digital communication system integer frequency offset, comprising the steps of: selecting a plurality of symbols in a frequency domain signal; selecting two sections of data with the same length from each symbol; adding absolute value of real and imaginary parts of each data point; accumulating the plurality of symbols; subtracting the produced two sections of sequence point by point and extracting the symbol so as to produce a comparative sequence; accumulating the comparative sequence point by point to produce a symbol accumulative sequence, and searching a minimum value; calculating an integer frequency offset according to the minimum value The invention is capable of reducing complexity of calculation with high reliability and less time consuming, which is not only appropriate for an OFDM system, but also a single carrier system

Abstract: The invention discloses a video sequential action detection method, device and equipment and a computer storage medium, and the method comprises the steps: carrying out the feature extraction of a video, so as to obtain a video feature vector; inputting the video feature vector into a time sequence probability convolutional neural network to obtain a time sequence point probability score; removingredundant time sequence points of the time sequence point probability scores to obtain a first start time sequence point and a first end time sequence point; generating an initial timing sequence action name according to the first starting timing sequence point and the first ending timing sequence point; obtaining an evaluation score of the timing sequence action nomination according to the initial timing sequence action nomination; and classifying the time sequence mention according to the evaluation score of the time sequence motion mention so as to complete time sequence motion detection of the video. According to the method, the problem of insufficient visual feature expression in the prior art is solved, and the time sequence action detection accuracy is improved.