2012 : M ios ipad 3 30 R, G, B

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1 2012 M

2 2012 : M ios ipad 3 30 R, G, B

3 I

3 3.................................. 16 3.4 4.................................. 18 3.5................................... 20 3.

4 1.1 Hecht, S. et al., lx lx lx lx lx lx lx lx lx lx lx II

5 15lx............................ 10 2.11 0.6 39lx............................ 11 2.12 0.7 78lx............................ 11 2.13 0.8 112lx........................... 11 2.14 0.9 153lx........................... 11 2.15 1.

5 1 1.1 [1] % Lifemedia[2] 1392 PC 24.6% [3] [4] [5] CRT Cathode-Ray Tube LCD Liquid Crystal Display 1

6 1.1: Hecht, S. et al., 1937 ipad 2[6] Ambient Light Sensor ALS [7] Hecht [8] iphone[9] Kindle[10] ITmedia[11] Android GoodReader Yuri Selukoff [12][13] ios PDF GoodReader 2

8 R, G, B ios 2.1 [14] Grassmann, H., 1853 [15]

2.1: 2008 [16] R, G, B Y 0.299 R 255 + 0.

9 2.1: 2008 [16] R, G, B Y R G B B 255 (2.1) (2.1) Y R, G, B (2.1) G R B G R G B G 5

10 M W 2.2: a 1m 2 lx lm 2.2 b cd [12] [14] Liebmann effect 2.4 6

11 2.1 G 2.3: 2.4: 7

12 2.3 PDF API ios API API API UIScreen Class Reference[17] [[UIScreenmainScreen]brightness] ios API API API 0.0 ios 1.0 API CGContextSetRGBF illcolor(context, r, g, b, a) PDF ios PDF Drawing Printing ios[18] 2 r 3 g 4 b 5 a PDF R, G, B G 3 g API g 0.0 y = 1 x y g x API 3 ios PDF PDF 8

0 API CGContextSetRGBF illcolor(context, r, g, b, a) PDF ios PDF Drawing

13 ios ipad2 Lux[19] 2.5: lx 2.6: lx 9

14 2.7: lx 2.8: lx 2.9: lx 2.10: lx 10

15 2.11: lx 2.12: lx 2.13: lx 2.14: lx 11

16 2.15: lx 12

17 3 2 ipad2 ipad2 ios6 2 ios6 ipad : ipad2 OS ios px 132ppi IPS LCD display

18 A 2 B

19 3.2: MS A 500 A A 650 A

20 % 16

21 17 3.1:

22 GoodReader Yuri Selukoff GoodReadr 20% GoodReader 18

23 3.2: 19

24 : lx 10lx lx 17lx lx 25lx lx 36lx lx 51lx lx 69lx lx 125lx lx 181lx lx 244lx lx 305lx lx 370lx 20

25 図 3.3: 照度の計測 3.6 考察 3.5 節から照度値の計測によれば提案手法を用いた電子書籍リーダーアプリケーションを表示した電子書籍リーダーの画面は一般的な電子書籍リーダーアプリケーションを表示した電子書籍リーダーの画面よりも照度の低減を確認した実験 1 のアンケートではまぶしさの低減の感知を確認しており照度の低減を実現した実験 2 によれば提案手法を用いた電子書籍リーダーアプリケーションを表示した電子書籍リーダーの画面は一般的な電子書籍リーダーアプリケーションを表示した電子書籍リーダーの画面と比べて読了にかかった時間に大きな差異が見られないことや設問への正答の多さから目視には問題がない 21

26 3 4 20% 3 4 GoodReadr : 22

27 [20] 9 2 M 23

28 24

29 25

30 [1], 2010,, < [2] Lifemedia, 2012,, < [3],,,, No.21, [4],,,,,, Vol.59, No.3, 2005, [5],,,, Vol.4, No.1, 2006, [6] Apple Inc., ipad 2, < [7] Apple Inc., Dimensional Drawings ipad2 Wi-Fi, devimages.apple.com.edgekey.net/resources/cases/ dimensions/ ipad-2-wifi-dimensions.pdf. 26

31 [8] Hecht, S., Haig, C. and Chase, A. M., 1937, The influense of lightadaptation on subsequent dark-adaptation of the eye, J. Gen. Physiol., 20, [9] Apple Inc., iphone, < [10] Amazon, Kindle, < [11] ITmedia, Android 5, < [12] Yuri Slukoff, GoodReader, goodreader-for-ipad/id ?mt=8. [13] ASCII MEDIA WORKS, 2013, GoodReader, < [14],,, [15] Grassman, H. G., 1853, Theory of compound colors; Sources of Color Science ed., MacAdam, D. L., 1970, The MIT Press. [16], 2008,, [17] Apple Inc., UIScreen Class Reference, com/library/ios/documentation/uikit/ reference/uiscreen Class/ UIScreen Class.pdf. [18] Apple Inc., Drawing Printing ios, com/library/ ios/#documentation/2ddrawing/conceptual/ DrawingPrintingiOS/Introduction/Introduction.html. 27

32 [19] Tondaj, Lux, cn/product.asp. [20],,,

Wireless Image Utility Version 2.3 対応 NEC ios Wireless Image Utility NEC's Image 1. Wireless Image Utility Wireless I

Wireless Image Utility Version 2.3 対応 NEC ios Wireless Image Utility NEC's Image 1. Wireless Image Utility...2 1-1....2 1-2....6 1-3....6 2.Wireless Image Utility ipad...7 3. ipad...7 4. ipad...8 4-1....8