Sony Digital Paper DPTS1

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Digital Paper System DPT-S1
Manufacturer Sony
Type e-reader
System-on-chip used Freescale i.MX508[1]
CPU ARM Cortex-A8
Memory 1 GB LPDDR2[1]
Storage 4 GB
Removable storage Up to 32 GB microSDHC[2]
Display 338 mm (13.3 in) electrophoretic display, 1200 × 1600 pixels (4:3 aspect ratio) at 150 ppi
Input Multi-touch touchscreen display, stylus[2]
Connectivity Wi-Fi (802.11 b/g/n 2.4 GHz), Micro USB 2.0[2]
Power Non-removable 1270 mAh lithium-ion battery[1]
Dimensions 233 mm × 310 mm × 6.8 mm (9.17 in × 12.20 in × 0.27 in)
Weight 358 g (12.6 oz)

Sony Digital Paper DPT-S1 was a 13.3″ (approaching A4) E ink e-reader by Sony, aimed at professional business users.[3] The DPT-S1 Digital Paper could display only PDF files at their native size, but lacked the ability to display any other e-book formats.[4] The reader had been criticized for being too expensive for most consumers, with an initial price of $1100 USD, falling to $700 USD at its end.[5] The reader was lightweight and had low power consumption, a Wi-Fi connection, and stylus for making notes or highlights.[6][7] Sony announced the discontinuation of the DPT-S1 in late 2016.[8] Its successors are the Sony DPT-RP1 (released in 2017, 13.3" screen) and Sony DPT-CP1 (released in 2018, 10.3" screen).


The 13.3 inch e-Ink Mobius electronic paper screen had a resolution of 1200 by 1600 pixels, with a capacitive touchscreen.[9] The device had an ARM Cortex-A8 at 1 GHz microprocessor.[1] It was built on a SoC circuit made by Freescale. The amount of RAM was not published anywhere. Internal storage was 4GB that is shared between system and user, however it was possible to expand this storage with a microSD card. It weighed 358g (0.8 pounds) with a thickness of 6.8mm. Novel to the DPT-S1 was the ability to interface with corporate networks specifically, adding encryption, thus allowing legal professionals to make use of it in their workflow by integrating handwritten annotations into PDFs that could propagate when copied.

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