Abstract: The present invention provides a method for planning a shortest possible three-dimensional path for autonomous flying robots to traverse from one location to the other in a geographical region, including translating a three-dimensional (3D) environment, discretizing the 3D environment into a graph of many grid cells or nodes, employing a modified any-angle path planning algorithm to calculate non-uniform traversal cost of each grid cell and by averaging the total traversal costs along the path to shorten the corresponding computation time, whilst incorporating operational costs other than the traversal cost specific to the autonomous flying robots to be traversed. The shortest possible path found by the present method does not only consider the path length, but also takes different costs of traversing and operating the flying robots into account, which increases its feasibility and flexibility to be applied in a wide variety of situations and technological areas.
Type:
Grant
Filed:
September 7, 2021
Date of Patent:
February 27, 2024
Assignees:
City University of Hong Kong;, Hangzhou Antwork Network Technology Co., Ltd.
Abstract: A cathodoluminescent device employs elongated grid electrodes such as small gauge wires for addressing and controlling the brightness of the display, thereby increasing the osmotic coefficient of the grid electrodes. End portions of the cathode filaments are bent into springs to reduce cold terminal effects. The edges of the face plate of the device are curved to reduce the visual effects of mosaic slots. The display may be operated at low anode voltage with increased luminescence so that full screen scanning is possible. Different sections of narrow strips forming a staggered structure strengthens the integrity of the device and reduces dark areas in the display.
Type:
Grant
Filed:
March 10, 1995
Date of Patent:
April 15, 1997
Assignees:
Pixtech, Inc., Hangzhou University
Inventors:
Ge Shichao, Victor Lam, Huang Xi, Jin Weicheng, Ruan Shiping
Abstract: A cathodoluminescent device employs elongated grid electrodes such as small gauge wires for addressing and controlling the brightness of the display, thereby increasing the osmotic coefficient of the grid electrodes. End portions of the cathode filaments are bent into springs to reduced cold terminal effects. The edges of the face plate of the device are curved to reduced the visual effects of mosaic slots. The display may be operated at low anode voltage with increased luminescence so that full screen scanning is possible. Different sections of narrow strips forming a staggered structure strengthens the integrity of the device and reduces dark areas in the display.
Type:
Grant
Filed:
February 25, 1991
Date of Patent:
December 8, 1992
Assignees:
Hangzhou University, Panocorp Display Systems
Inventors:
Ge Shichao, Victor Lam, Huang Xi, Jin Weicheng, Ruan Shiping