Abstract: A screen coding method and system based on mass center coincidence. The screen coding method based on mass center coincidence includes: constructing a plurality of coding unit models composed of a combination of a plurality of geometric figures with coincident mass centers, where vertices of the geometric figures do not coincide; and filling in data information to each vertex of the coding unit models according to a method of data information arrangement of a plurality of data combinations to generate a coding unit so as to implement different data lengths of the same coding unit. As such, a data length of the coding unit can be controlled, so that when more data needs to be coded, the overall size of the coding unit does not need to be changed, which greatly improves coding efficiency.

Abstract: A screen coding method and system based on mass center coincidence. The screen coding method based on mass center coincidence includes: constructing a plurality of coding unit models composed of a combination of a plurality of geometric figures with coincident mass centers, where vertices of the geometric figures do not coincide; and filling in data information to each vertex of the coding unit models according to a method of data information arrangement of a plurality of data combinations to generate a coding unit so as to implement different data lengths of the same coding unit. As such, a data length of the coding unit can be controlled, so that when more data needs to be coded, the overall size of the coding unit does not need to be changed, which greatly improves coding efficiency.

Abstract: A convenient operating method and a convenient operating terminal. The method includes: acquiring a touch trajectory inputted by a user on a touch screen; acquiring from a preset first database a pattern or character matching the touch trajectory; matching the acquired pattern or character with operating object-associated information in a preset information database, the operating object-associated information being relevant information of a corresponding operating object; and displaying, under the condition of successful matching, the operating object corresponding to the operating object-associated information successfully matched.

Abstract: A calibration method for a proximity sensor is disclosed, including: collecting static data of the proximity sensor; calculating an average value of the static data to obtain an average static data of the proximity sensor; comparing the average static data with a preset range; and changing, if the average static data exceeds the preset range, a number of light beams reaching the proximity sensor, such that the static data is triggered to change according to a change in the number of the light beams sensed by the proximity sensor. A calibration device for a proximity sensor is also disclosed.

Abstract: A three-dimensional urban road system capable of intensively utilizing land and avoiding traffic jam, including a straight section, a longitudinal slope section and an intersection. The straight section and the intersection are connected to form a road network. The longitudinal slope section is connected with the straight section, realizing connection between the straight section and the ground. The straight section includes a bottom road, a parking layer and a running layer; parallel ramps for small cars only arranged such that small cars in the straight section can switch among the three layers. Roads are changed into three layers: the upper running layer for small cars; the middle parking layer, a transfer layer for parking and connecting the ground road and the upper running layer; and the bottom road for large vehicles. Large vehicles and small cars are completely shunted, thus effectively solving the problem of traffic jam.

Abstract: A three-dimensional urban road system capable of intensively utilizing land and avoiding traffic jam is provided, including a straight section, a longitudinal slope section and an intersection. The straight section and the intersection are connected to form a road network. The longitudinal slope section is connected with the straight section, realizing connection between the straight section and the ground. The straight section includes a bottom road, a parking layer and a running layer; parallel ramps for small cars only arranged such that small cars in the straight section can switch among the three layers. Roads are changed into three layers: the upper running layer for small cars; the middle parking layer, a transfer layer for parking and connecting the ground road and the upper running layer; and the bottom road for large vehicles. Large vehicles and small cars are completely shunted, thus effectively solving the problem of traffic jam.