In order to keep reducing the bit cost, NAND Flash memory vendors have changed the NAND Flash technology from 2D to 3D since 2014. Moreover, 3D NAND Flash is becoming the mainstream of the NAND Flash based storage system from 2017. Owing to the storage material of NAND Flash changing from heavy doped poly-silicon to silicon-nitride, the inter-cell interference is ignored during programming operation to increase the write performance on 3D NAND Flash memory. However, in order to reduce the aspect ratio of the memory hole, the thickness of the inter word-line dielectric is reduced with the increasing of the stacking number. Accordingly, the Vth distribution is widened by the interference between the electrons in the silicon-nitride and the conductive channel between memory cells. This paper provides the measurement results of the cell-to-cell interference with the mass-produced 3D NAND Flash memory and proposes a method to reduce the cell-to-cell interference on 3D NAND Flash. Furthermore, the error bit of the 3D NAND Flash memory is 15% reduced and the endurance is 3X increased by the proposed method.

Texture mapping with positional constraints is an important and challenging problem in computer graphics. In this paper, we first present a theoretically robust, foldover-free 2D mesh warping algorithm. Then we apply this warping algorithm to handle mapping texture onto 3D meshes with hard constraints. The proposed algorithm is experimentally evaluated and compared with the state-of-the-art method for examples with more challenging constraints. These challenging constraints may lead to large distortions and foldovers. Experimental results show that the proposed scheme can generate more pleasing results and add fewer Steiner vertices on the 3D mesh embedding.

Abstract An easy‐to‐use mesh pose‐editing system is presented. We take advantage of both skeleton‐based and example‐based approaches in order to provide an intuitive way for artists to edit mesh poses. Our system automatically extracts the skeletons of the remaining example models once the skeleton of a reference mesh is constructed. In our editing system the desired skeleton can be easily and naturally posed using an inverse kinematics (IK) algorithm incorporated with searching the optimal weights in the defined skeleton space of examples meshes. Eventually, the desired shape with detailed deformation can be constructed by blending the example meshes. Experimental results show that the proposed system provides an easy and intuitive control on mesh pose‐editing. Copyright © 2007 John Wiley & Sons, Ltd.