Abstract: The present invention relates to an automatic tooth movement measuring method employing a three dimensional reverse engineering technique; and, more particularly, to an automatic tooth movement measuring method employing three dimensional reverse engineering technique, wherein a tooth movement measuring device capable of measuring a movement status of teeth before and after orthodontic treatment by spatially coordinating a three dimensional digital model of the tooth. According to the present invention, the tooth movement measuring device forms two three dimensional models which change corresponding to the point of time and applies a space coordinate to each model. And, by applying a technique superimposing each model, the tooth movement can be measured quantitatively and qualitatively.

Abstract: An aspect of the present invention features a method for analyzing a signal pattern detected by a sensor array that comprises one or more gas sensors. The method can comprises converting multidimensional data outputted from the sensor array to linear data, the data containing information on one or more reference gases; creating an ADSTM (Angle Difference-based State Transition Model) by using the converted data; and analyzing a gas by using the ADSTM when the sensor array outputs data of the gas. The method for analyzing a signal pattern detected by a sensor array according to the present invention can convert multidimensional values inputted through the sensor array into a single piece of continous data.

Abstract: Disclose is a modulation method that transmits n bits per modulation symbol, comprising the steps of: (a) generating a constellation of which 2n constellation points are arranged to be angular point of equilateral triangle; (b) generating a modulation symbol by mapping the constellation point with digital signal. According to the present invention, average power consumed by constellation points can be reduced by using equilateral triangular constellation.