GENG Wei-dong, LIU Hui-gang, LIU Yan-yan, SHANG Guang-hui, JING Qing, HU Si-jie, QUAN Zhi-zhen. Circuit Design of Intelligent Gamma Correction for FSC-LCoS[J]. 液晶与显示, 2010,25(5): 713-717
GENG Wei-dong, LIU Hui-gang, LIU Yan-yan, SHANG Guang-hui, JING Qing, HU Si-jie, QUAN Zhi-zhen. Circuit Design of Intelligent Gamma Correction for FSC-LCoS[J]. 液晶与显示, 2010,25(5): 713-717DOI:
Circuit Design of Intelligent Gamma Correction for FSC-LCoS
The circuit design of a multi-mode intelligent gamma correction for LCoS is introduced. It is based on the digital control method and can be integrated to the field sequential color LCoS chip. Under the control of the external CPU it has in-system programming feature and can be programmed independently to setup gamma correction curve of RGB sub-field. The circuit has adopted the 10 bit dual resistor ladder D/A converter and has advantages of high voltage accuracy
simple circuit structure and low power consumption. The internal structure of the circuit
software flow and experimental results are described. Test results show that the maximum error of the output voltage is only 3 mV when the output voltage range is 0 to 5 V.
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