Qisda ES900

Qisda ES900
Developer Qisda OEM/ODM AUO Optronics
Manufacturer Qisda OEM/ODM[1][2]
Type e-book reader
Release date 2011 (2011)
Operating system Linux UI Engine QT embedded 4.5.1
OS: Linux 2.6.21
CPU Samsung S3C2416 ARM9 @ 400MHz
Memory 128 MB (MDDR),
Storage Internal: 2GB (NAND)
External: microSD/microSDHC
Display 9-inch (230 mm) SiPix
Graphics 1024 × 768, 150 ppi density,
16 levels of grayscale
Sound built-in speakers (0.5W)
Input touchscreen, 7 keys
Touchpad Capacitive
Connectivity Wi-Fi b/g, microUSB high speed, audio jack
Optional: 3.5G HSDPA
Power 1530 mAh, 3.7 V
Dimensions 166.9 × 227.8 × 10.5 mm
Weight 487 gram (without Wi-Fi)
Predecessor Qisda ES600

Qisda ES900 is a discontinued electronic-book reader developed by Qisda Corporation and based on a Linux platform. The device is sold under various brand names worldwide.

Features

Qisda ES900 provides a 16 levels of grayscale SiPix touchscreen display for viewing digital content. Pages are turned using the buttons on the device or touchscreen. The ES900 connects to the internet through available Wi-Fi connections. Users can read books without a wireless connection. Disconnecting the wireless connection can prolong the battery life.

Specifications

CPU[1][2]
OS
Memory
Connectivity
Miscellaneous
  • > 10.000 pages (Wi-Fi off)

Formats supported

Text
Picture
Audio

Sold as

The device is sold worldwide under various brand names.

Asia
Europe

Modification

Being that the hardware utilizes Linux-based software it can be changed or improved to the owners content. The firmware is labeled as “QT Software” and varies from vendor to vendor. The upgrade contains multiple image files with the .img extension, along with other system files.

Flashing to upgrade the firmware can be taken advantage of as it does not seem to check if the version that is being installed is older. Due to this, there is the possibility to use different vendors' firmwares on other models than the one they distribute for.

Dual-boot

The devices seem to contain a native dual-boot capability. When a device specific key combination is pressed during power-on any linux-kernel + ramdisk combination is booted from the sd-card.[5]

References

  1. 1 2 "9 inch, 16 gray level, 2G Ebook Reader with Wi-Fi/Touch SiPix Solution". Media Federal Co., Ltd. Retrieved 14 May 2011.
  2. 1 2 "9 inch Ebook Reader Device (AUO SiPix Solution)". Alibaba.com Hong Kong Ltd. Retrieved 14 May 2011.
  3. ↑ Asus. "Specifications Asus Eee Reader DR900". ASUSTeK Computer, Inc. Retrieved 14 May 2011.
  4. ↑ "bq Avant XL". Mundo Reader, S.L. Retrieved 14 May 2011.
  5. ↑ "oyo-hack/Booting". Retrieved 22 May 2011.
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