| 专利名称 | Display drive with permutation and superposition gray-level control | 申请号 | US201013517929 | 专利类型 | US | 公开（公告）号 | US9019322(B2) | 公开（授权）日 | 2015.04.28 | 申请（专利权）人 | 中国科学院长春光学精密机械与物理研究所 | 发明（设计）人 | Ding Tiefu;Wang Ruiguang;Zheng Xifeng;Chang Feng | 主分类号 | G09G5/10 | IPC主分类号 | G09G5/10;G09G3/20;G09G3/32 | 专利有效期 | Display drive with permutation and superposition gray-level control 至Display drive with permutation and superposition gray-level control | 法律状态 | 说明书摘要 | A display driver circuitry with permutation and superposition gray-level control comprises a gray-level controller. The controller may comprise a permutation and superposition adder configured to divide N-bit gray-level data G into M most significant bits, serving as a superposition reference GH, and (N?M) least significant bits, serving as a superposition increment GL, and to superpose superposition values Xi onto GH to derive pieces of scan data Gi for S scan operations; an overflow bit setting unit configured to set an overflow bit F; and an output unit configured to output the scan data Gi. A display driven this way has an improved refreshing frequency with the same gray-level reproduction ability as PWM-based schemes. Further, the duration of each scan operation, or scan period, is constant, resulting in convenience in software implementations. Furthermore, the pulse width representative of the gray-level value is determined by superposition of the scan operations. |
1、源头对接，价格透明
2、平台验证，实名审核
3、合同监控，代办手续
4、专员跟进，交易保障