When there are e-books with the color screen, safe for eyes?
became the witness of interesting dialogue of the potential buyer with the seller of shop of the computer equipment Recently. Interested the buyer whether there are on sale e-books with the color display. “Of course, is not present“, - I thought, standing nearby. “Of course, is“, - the seller answered, having stunned me.
In several seconds I recovered, having seen that the seller it is proud shows to the buyer the e-book with TFT - the display - such itself a nedoplanshetnik according to characteristics and not the book on impact on eyes.
a name Origin
Initially e-books ( E - Book ) were called devices which main part was a thin, power effective not shining screen from which reading was equated to reading a grayish page of the book. Were called these E screens - Ink , from here, on analogies, and the name of the device.
In the CIS countries as soon as the device on the basis of E - Ink do not call: the e-book, the eReader, the reader, the pocketbook (in honor of the international firm which snipped off to itself the main segment of the market). On the other hand, add confusion and producers - devices with any type of screens began to call e-books if they are specialized for reading.
Evolution of displays
the First screens displayed only several shades of gray, had low contrast (6 to 1), and the speed of updating of the page made about 0,5 seconds.
After a while the VizPlex 110 screen was constructed by . Conditionally these screens are representatives of the second generation of electronic ink. Contrast at these displays significantly did not improve - became 7 to 1, but they, depending on modifications, could display 8 or 16 shades gray, and for a page regeneration they needed already about 250 ms.
It was succeeded by generation of VizPlex 220 Pearl with higher speed of updating of the picture in comparison with technology of the previous generation. Such screen can brag of quite high contrast 10 to 1, small time of a response of a matrix - about 200 ms also display 16 shades of gray.
Practically all modern eReaders standing on shelves of shops have the Pearl screen. the First books with the Pearl screen, other companies got access to technology after them. “Freshest“ - 6 - the inch PocketBook 622 Touch with the case unusual to the touch presented in the first day of spring.
And where color?
A color were in research laboratories until recently. And as the market with a small gap was entered by color displays of different firms, work on improvement of everyone is carried out with a tremendous speed - positions need to be defended.
Today in the market of eReaders two technologies compete with the color display, safe for eyes.
Mirasol from Qualcomm was presented on January 7, 2010 at the CES exhibition to Las - Vegas. In fact, with technology of electronic paper it has nothing in common, except the minimum influence on eyes thanks to the reflected light. The first book started in a mass production - Kyobo e - Reader. She received the Mirasol screen of 5 in size. 7 inches and with a resolution of 1024 on 768 points. The producer declares that the screen is capable to show video. Judging by video reviews, indeed. Devices on the basis of Mirasol, except Kyobo e - Reader - Hanvon C18, Bambook Sunflower and Koobe Jin Yong Reader.
Triton from E - Ink Corporation . Korporatsiiya of E - Ink presented new technology of color displays under the name Triton much later - in November, 2010. These screens are capable to display 4096 colors, picture contrast 10 to 1, the speed of updating of the screen - from 120 to 980 ms. But the book cannot play video from - for insufficient speeds of updating of the screen and a saturation of flowers which leaves much to be desired. So far on the basis of Triton one eReader - JetBook Color is produced in lots.
Which of the “reading“ brotherhood still did not know about emergence of color eReaders - rejoice! They already are, but to us still did not reach yet.