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논문 기본 정보

자료유형
학술대회자료
저자정보
Okumura, Haruhiko (Corporate Research & Development Center, Toshiba Corp.) Baba, Masahiro (Corporate Research & Development Center, Toshiba Corp.) Takagi, Ayako (Corporate Research & Development Center, Toshiba Corp.) Sasaki, Hisashi (Semiconductor Company, Toshiba Corporation) Matsuba, Mitsunori (Semiconductor Company, Toshiba Corporation)
저널정보
한국정보디스플레이학회 한국정보디스플레이학회 International Meeting 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
발행연도
2009.1
수록면
1,081 - 1,085 (5page)

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We have already developed EMI reducing techniques using lossless compression by vertically differential EMI suppression method (VDE[1]). It applies lossless modulo reduction and data bit mapping optimization for low voltage differential signaling (LVDS) transmission lines, that reduces the probability of transient bit and EMI by 12 dB [6][7]. We also improved and optimized the VDE for low power LCD interface. With this modified VDE algorithm[8], the developed FPGA was measured the reduction of the power consumption of LCD circuit by more than 15 % compared to the conventional methods in the case of 14-in LCD with SXGA resolution. The VDE algorithm is based on the total image systematic approach. In the VDE method, the present image signals are subtracted for the 1H delayed image signals and transferred to a column driver through a PCB. As the vertical correlations for image signals are very high, we expected that most of the vertically subtracted image signals remain 0 level and transient cycles become very long. As a result, the power consumption and EMI are extremely reduced for the transferred image signals on a PCB. In this paper, we discussed our proposed method by emphasizing the fact that systematic approach are important based on not only display point of view but also total system point of view.

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