Peking University

Beijing Pico Technology Co., Ltd.

Jin Bo Ma

Chong Wang

Biao Li

Chuan Guo Fan

Dingguo Xia

Wen Hui Zhao

The present invention discloses a head-mounted display and a video data processing method thereof. The head-mounted display comprises: a video input module, a distortion processing module and a video output module. The head-mounted display divides each image frame in a video into a plurality of image blocks of symmetry according to a graphic correspondence of a distorted image after a distortion processing, performs a distortion processing of any one of the image blocks, and obtains data of the current image frame after the distortion processing according to the graphic correspondence.

Head-mounted display and video data processing method thereof

The present application discloses boron-doped lithium rich manganese based materials for cathodes of lithium ion batteries. The disclosed cathode materials can be prepared by co-precipitation and sol-gel methods. The chemical formula of this cathode material is Li[LiMnCoNiB]O(a+b+c+d+x=1, a, b, x&#x3e;0, c&#x2267;0, d&#x2267;0, c+d&#x3e;0). Lithium ion batteries using these cathode materials show impressive improvements in performance and increased tap density at low level of boron doping. The co-precipitation method is particularly suitable for large-scale industrial production. The sol-gel method is simple and can produce fine and uniform particles.

Boron-doped lithium-rich manganese based materials and preparation methods for Li-ion battery cathode

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Beijing, China

Jin Bo Ma