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Reducing the memory of compression Feedforward driving for a new LCD controller
Author(s) -
Someya Jun,
Okuda Noritaka,
Yamakawa Masaki
Publication year - 2004
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1824237
Subject(s) - computer science , controller (irrigation) , image compression , feed forward , liquid crystal display , computer hardware , quantization (signal processing) , frame (networking) , compression (physics) , data compression , compression ratio , computer vision , artificial intelligence , image processing , image (mathematics) , control engineering , materials science , automotive engineering , engineering , telecommunications , composite material , agronomy , biology , operating system , internal combustion engine
— The authors have studied a method of reducing the frame memory for signal processing used to improve the response time of liquid crystals. Compared with cases in which quantization is used, the compression Feedforward driving method, which reduces frame memory by applying an image‐compression technique, can effectively reduce the frame‐memory size. The study revealed that errors decrease by 6–10 dB or so if the image data was reduced to 1/3 by means of image compression. Based on the results of the study, the authors have developed a second‐generation LCD controller. With just one SDRAM unit, this LCD controller can produce almost ideal processing effects.