XO-2: Difference between revisions
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[[Image:XO2-modes.jpg|500px|center]] |
[[Image:XO2-modes.jpg|500px|center]] |
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The XO-2 two sheet design concept was canceled in in 2009. |
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=XO-2 Laptop Design= |
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<ref>2009-11-04 [http://www.guardian.co.uk/technology/blog/2009/nov/04/olpc-negroponte-tablet-ebook OLPC XO-2 cancelled: tablet will be developed next: The One Laptop Per Child project will not be producing a dual-screen follow-up after all, but has plans for a tablet- or slate-style XO-3, according to founder Nicholas Negroponte] by Jack Schofield</ref> It was cancelled in favor of the one sheet [[XO-3]], which was also cancelled in late 2012. See also the [[XO-4]] laptop, which is a successor to the [[XO-1.75]]. |
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=A Future Tablet= |
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On May 21, 2008, at an OLPC Country Meeting, design studies of a next-generation OLPC laptop (the XOXO |
On May 21, 2008, at an OLPC Country Meeting, design studies of a next-generation OLPC laptop/tablet (the XOXO, XO-2, or just 2) were shown to attendees and to the world press. The second generation device from OLPC doesn't fits neatly into the "laptop" category. The form factor is instead that of a book or folded (clam shell) tablet (a '''handbook'''). The entire interior surface is a multi-touch sensitive display. Each individual display would have a 16:9 aspect ratio. |
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Development of this design is currently halted. OLPC is instead working on an alternate design ([[XO-3]]). |
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==Usage== |
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Other detailed goals include: |
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At least three modes of operation are expected: |
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*Book mode - the handbook is used as a notebook or book reader, and viewed with its hinge vertical. |
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*Laptop mode - the "lower" (right hand) display of the handbook displays a keyboard, leaving the upper display for application windows. |
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*Tablet mode - when flat, the handbook provides a surface for drawing, writing, and games. |
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The bezel between the displays will be minimized around the hinge, and the handbook will open flat (and lie flat), providing a roughly square display. This is suitable for writing, exploring graphical material or "board" games. Both screens will be driven with the same, or identical, graphics and video processors. |
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* Dual 16x9 proportioned sunlight-readable touch screens |
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* Keyboard and touchpad both replaced by touch screens |
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* Physically smaller than XO-1; size and weight more like a book |
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* 1 watt power consumption |
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* Price of US$75 to large educational buyers |
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The case will be sealed against dust intrusion and anything up to, but not including, immersion in water. The use of a case material that flexes to cover the hinge section between the pieces is planned, allowing a single piece outer shell, and greatly simplifying meeting these requirements. |
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=More detailed hardware ideas= |
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These are from people who are not on the hardware design team, so are best described as "wild guesses": |
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While the displays are identical, the industrial design will be biased, with one side being heavier to provide stability when used in "laptop mode". In this mode, manual input devices are synthesized on |
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* Speakers and camera almost certainly: Record is one of the most-used applications on the XO-1. (The kids in Peru asked for a flash; there are safety issues with that, though.) |
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the lower display, resting flat on a surface. This display may also be equipped with tactile feedback devices to enhance the "typing" experience. One advantage of such a programmable input surface is that keyboards may be changed from one set of glyphs to another instantly. Likewise, alternative "keyboards" such as a piano keyboard may be provided. |
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* Mesh networking, yes. Not connected with USB! (since this is a big part of our suspend/resume troubles ATM.) |
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* Fold-out antennas: these were difficult to manufacture with repeatable characteristics. On the other hand, they became an iconic XO feature. |
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* Clear, clip-on rubberized keyboard that snaps over second screen showing through customized keyboard buttons but still allowing touch typing and emulating button presses on the touch screen. |
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==Storage== |
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<br clear="all"> |
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As in the [[Hardware#XO_Laptop|XO]], the non-volatile storage will be provided by NAND Flash. |
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==Networking== |
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==Some other features that have been discussed== |
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It is likely that the same mesh network coprocessor architecture used on the [[Hardware#XO_Laptop|XO]] will be be provided, along with a similar 802.11b/g radio. The trademark antenna "ears" of the XO-1, however, will be placed internal to the case. |
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The networking module will likely use an industry standard miniPCIe card internally, allowing field replacement of faulty modules and factory configuration of different networking options (such as WiMAX, 802.11b/g, 802.11n, etc...) if desired. |
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[[Image:XO-2-strip.jpg|thumb|right]] |
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* GPS (unknown whether this will be able to make the cost budget) |
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* Accelerometer (so that rotation is magic, not manual) |
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* Light sensor (so backlight level can be automatic for better power savings) |
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* Hinge-angle sensor (detect 'tablet mode' as well as 'closed') |
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* Hardware-protected RTC (bitfrost desiderata) |
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* Better protection for firmware FLASH, to avoid the possibility of bricking a machine if the power is removed at the wrong time. |
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* More open hardware design (schematic) -- this is really a contractual issue with the manufacturer |
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[[Image:XO-2-and-XO-1.jpg|thumb|400px|XO-2 mockup and XO-1, both closed and hanging from straps]] |
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* More open software: we may not need an EC, and if we do we may be able to ensure its code is open. We may change the wireless device, and/or be able to switch to open firmware for it. |
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==Audio/Camera== |
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* Gigabit Ethernet port (for reliable networking among hundreds of laptops in a school) |
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A full stereo microphone (internal and external input) will be provided, in addition to stereo speakers and headphone jack. A camera capable of stills and video will be mounted on the bezel of the left hand (upper) side of the handbook. |
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* Power over Ethernet (so laptops charge while networked, in school) |
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* Should it have USB? USB is the worst part of the XO-1's power management architecture. But USB is also the main expansion port, to reflash, to add a keyboard or mouse, to get Ethernet, to power custom peripherals like medical monitors. |
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The intent is to improve the analog input, providing a full voltage range and higher frequency response than the [[Hardware#XO_Laptop|XO]]. The [[Measure]] activity has proven to be popular. |
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* Should it have an SD slot? It definitely needs a nonvolatile memory expansion strategy, and SD is reasonable. 8-bit-wide SD/MMC is twice as fast as the 4-bit-wide one in the XO-1. |
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* '''USB 3.0''' |
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* Stereo audio in? |
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* Stereo audio out? |
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* Integrated speakers? (They can also perhaps provide tactile feedback for the virtual keyboard, if designed to do so.) |
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* Stylus and stylus slot? Virtually every other touchscreen computer has one, for picking or writing with a stroke smaller than a blunt fingertip. |
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* Processor: not yet selected. It will almost certainly be a highly integrated System-on-Chip, so merely picking an architecture like "x86" or "ARM" isn't sufficient. Suggestions from the audience: XXX |
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* Battery? '''Solar cell!''' LiFePO4 seems to work pretty well in the XO-1. If OLPC could design a "standard" small LiFePO4 battery form factor, like a replacement for the AA that has an interruption-proof connector suitable for computers, it could become a standard worldwide in all sorts of electronics, such as flashlights. This would certainly help with spares! |
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* Software radio receiver? AM and shortwave, maybe FM, maybe analog TV, are probably doable for pennies. Kids can learn about radio and signal processing -- and have mass communication (AM radio) receivers. |
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* Software radio transceiver? An open WiFI chip would probably suffice for this. |
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* A 3G or WiMax module ??? |
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==I/O== |
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= For More Information = |
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Three standard sized master USB-2 ports will be provided.. |
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See also: All TRAC tickets marked "gen2" at [http://dev.laptop.org dev.laptop.org]. For example, [http://dev.laptop.org/ticket/836 #836 (Gen 2 wishlist)]. |
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==Storage Expansion== |
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= Software development plans = |
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An (internal) Flash memory card slot (SD) will be provided, allowing for expansion of the available storage. |
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Linux, evolving forward from the current XO software. |
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==Battery== |
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Jim Gettys recommends looking at [http://www.youtube.com/watch?v=olWjnfBoY8E Peter Hutterer's videos] on YouTube (search for "mpx"). That shows the practicality of touch based and multi-user based interfaces in Linux. More details on the [[Image:Gen-2_touch.pdf|different areas that touch requires in the software stack]] are available. Please come help! |
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The intent is to provide enough battery for a full eight hours of moderate use. This should be achievable using a 16 - 20 WH LiFePO battery |
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==Notes== |
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<references /> |
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[[Category:developers]] |
[[Category:developers]] |
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Latest revision as of 22:55, 3 July 2013
The XO-2 two sheet design concept was canceled in in 2009. <ref>2009-11-04 OLPC XO-2 cancelled: tablet will be developed next: The One Laptop Per Child project will not be producing a dual-screen follow-up after all, but has plans for a tablet- or slate-style XO-3, according to founder Nicholas Negroponte by Jack Schofield</ref> It was cancelled in favor of the one sheet XO-3, which was also cancelled in late 2012. See also the XO-4 laptop, which is a successor to the XO-1.75.
A Future Tablet
On May 21, 2008, at an OLPC Country Meeting, design studies of a next-generation OLPC laptop/tablet (the XOXO, XO-2, or just 2) were shown to attendees and to the world press. The second generation device from OLPC doesn't fits neatly into the "laptop" category. The form factor is instead that of a book or folded (clam shell) tablet (a handbook). The entire interior surface is a multi-touch sensitive display. Each individual display would have a 16:9 aspect ratio.
Development of this design is currently halted. OLPC is instead working on an alternate design (XO-3).
Usage
At least three modes of operation are expected:
- Book mode - the handbook is used as a notebook or book reader, and viewed with its hinge vertical.
- Laptop mode - the "lower" (right hand) display of the handbook displays a keyboard, leaving the upper display for application windows.
- Tablet mode - when flat, the handbook provides a surface for drawing, writing, and games.
The bezel between the displays will be minimized around the hinge, and the handbook will open flat (and lie flat), providing a roughly square display. This is suitable for writing, exploring graphical material or "board" games. Both screens will be driven with the same, or identical, graphics and video processors.
The case will be sealed against dust intrusion and anything up to, but not including, immersion in water. The use of a case material that flexes to cover the hinge section between the pieces is planned, allowing a single piece outer shell, and greatly simplifying meeting these requirements.
While the displays are identical, the industrial design will be biased, with one side being heavier to provide stability when used in "laptop mode". In this mode, manual input devices are synthesized on the lower display, resting flat on a surface. This display may also be equipped with tactile feedback devices to enhance the "typing" experience. One advantage of such a programmable input surface is that keyboards may be changed from one set of glyphs to another instantly. Likewise, alternative "keyboards" such as a piano keyboard may be provided.
Storage
As in the XO, the non-volatile storage will be provided by NAND Flash.
Networking
It is likely that the same mesh network coprocessor architecture used on the XO will be be provided, along with a similar 802.11b/g radio. The trademark antenna "ears" of the XO-1, however, will be placed internal to the case.
The networking module will likely use an industry standard miniPCIe card internally, allowing field replacement of faulty modules and factory configuration of different networking options (such as WiMAX, 802.11b/g, 802.11n, etc...) if desired.
Audio/Camera
A full stereo microphone (internal and external input) will be provided, in addition to stereo speakers and headphone jack. A camera capable of stills and video will be mounted on the bezel of the left hand (upper) side of the handbook.
The intent is to improve the analog input, providing a full voltage range and higher frequency response than the XO. The Measure activity has proven to be popular.
I/O
Three standard sized master USB-2 ports will be provided..
Storage Expansion
An (internal) Flash memory card slot (SD) will be provided, allowing for expansion of the available storage.
Battery
The intent is to provide enough battery for a full eight hours of moderate use. This should be achievable using a 16 - 20 WH LiFePO battery
Notes
<references />