Amazon Kindle D00111 Uživatelský manuál stáhnout pdf (Strana 38)

8 Conclusion

8.1 Results

The thesis project was started with a lot of enthusiasm and quest for knowledge, this quest

lead to the exploration of several existing, but scattered, facts in the field of reflective display.

The first part of the thesis was to make a survey of different technologies behind reflective

displays. Different technologies were examined during the thesis and all the E-paper

technologies encountered are painstakingly and meticulously documented in this report. All

the different E-paper technologies have been thoroughly examined and structurally grouped

according to their technological base (see table 2.2). Some of the E-paper technologies have

come a long way in both performance and empirical use in commercial devices; others are

still in their early stages and, therefore have not made it to any commercial product.

Furthermore, some of the E-paper technologies like Bridgestone and Liquavista have

excellent refresh rate, however, a few of these E-Papers refresh rate needs considerable

improvement. Color capability is the next phase in the E-paper technology and most of the

companies are working towards this goal (section 2.4.8). Presently, owing to its slow refresh

rate and lack of color E-papers are not used as video display. It is worth mentioning though

that, the speed at which the technology is evolving it is believed that in the near future colored

E-paper displays will be able to stream videos and therefore could be in stiff competition with

LCD in this area.

The second part of the thesis was to make a survey of existing E-Reader products and choose

a suitable display platform. A market analysis of all commercial E-paper products was made,

however, the thesis stipulated E-Reader survey, and consequently, much emphasis was

focused on E-Readers. The thesis achieved this goal; all commercially available E-paper

based E-Readers were examined, including the ones that are mere concept products (see

section 3.1). The result is that the earlier E-Readers had a refresh rate of about 1 second, they

crashed easily and they supported only a few file formats (see Appendix A, table 1). At the

end of this part of the thesis electrophoretic based E-paper display technology by E-ink was

chosen as the display to be used for Lundinova’s proposed E-Book. E-ink display was chosen

because it has been used on several products and still being used on new commercial E-paper

products. E-ink display has a good contrast ratio and reflectance (see table2.1) and is also

much more reliable. Although, E-ink display was suggested its typical refresh rate of 500ms

still needs to be improved on.

The last part of the thesis was to “Build an E-Book-Reader Prototype”. The hardware was not

built from the scratch, instead a development Kit was used (see section 7.1). Owing to time

constraints and difficulties in getting the hardware to work only very few functionalities

where implemented in both the Nano-X simulator on the PC and the Development-Kit.

Generally, the thesis results are as follows:

• E-paper technologies were examined and structurally group according to the

material they are made of.

• The market analysis covered most of the E-Readers in the market.

• An E-Book prototype with minimal functionality was built in the simulator.

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Amazon Kindle D00111 Uživatelský manuál Strana 38