Posted by on under megapixel camera, veriz, android, video recording, phe, cortex, motorola, verizon | 
Android Central has more details on Motorola's Android phone for Verizon which may or may not have a 600 MHz ARM Cortex A8 processor, 3.7-inch 854x480 screen, 5-megapixel camera, video recording and...
Tagi: megapixel camera, veriz, android, video recording, phe, cortex, motorola, verizon
Posted by on under brutal light, la tegra, 3gs, ipad, silic, system on a chip, twitter, hubbub, cortex, 28 jan, supposedly, nvidia, mali, architecture, apple, memory |
For some of us, amid all the hubbub about
revolutions and whatnot yesterday, the most significant announcement on hand was
Apple's supposedly custom A4 CPU. Alas, in the cold and brutal light of the morning after, we're hearing that it is in fact a system-on-a-chip driven by a
Cortex-A9 MPCore CPU "identical" to the one found inside
NVIDIA's Tegra 2, while besting the
iPhone 3GS significantly with its 1GHz speed and multicore architecture. The chip is composed of that Cortex barnburner, an integrated memory controller, and the Mali 50-series GPU, making it an all ARM affair -- though we still don't know how much Apple and
PA Semi did in terms of arranging and integrating those components within the silicon. While still not 100 percent confirmed, it would seem there were no revolutions on the iPad's processing front -- just a rebranded bit of well engineered hardware.
Apple's A4 is an ARM-based system-on-a-chip a la Tegra 2? originally appeared on Engadget on Thu, 28 Jan 2010 04:44:00 EST. Please see our terms for use of feeds.
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Tagi: brutal light, la tegra, 3gs, ipad, silic, system on a chip, twitter, hubbub, cortex, 28 jan, supposedly, nvidia, mali, architecture, apple, memory
Posted by on under veil of ignorance, lurid images, ipad, system chip, sgx, source link, core processor, x ray, s central, engineering firm, energy use, system on chip, reverse engineering, cortex, hummingbird, mobo, a8, model number, latency, stacks |
Ever so gently, we're starting to
peel away the layers of mystery surrounding the A4 system-on-chip that powers Apple's fancy new slate device.
iFixit, helped by reverse engineering firm
Chipworks, have gone to the trouble of both dissecting
and X-raying the iPad's central processing hub in their quest to lift the veil of ignorance. Their findings confirmed that the A4 is built using a "package on package" method, meaning that the 256MB of Samsung-provided SDRAM is stacked immediately atop the CPU, which is noted as being reductive to both latency and energy use. With a single core processor inside, the
iFixit team concluded the iPad had to be running on
a Cortex A8 -- which is very much the
likeliest choice at this point -- but their assertion that it
couldn't be a
Cortex A9 MPCore inside is inaccurate, as those chips also come in single-core options. Either way, it'll be interesting to see how it stacks up against
Samsung's Hummingbird chip, which was designed by Intrinsity, the same company Apple is being rumored to have
recently acquired. Finally, the visual inspection of the iPad's mobo puts a model number to the already known
PowerVR GPU, narrowing it down to the SGX 535, while also naming and picturing a number of other exciting components, such as the always popular capacitive touchscreen controller. Hit the source link below for all the lurid images.
Apple's A4 system-on-chip gets decoupled from iPad, investigated with the help of an X-ray originally appeared on Engadget on Tue, 06 Apr 2010 05:04:00 EST. Please see our terms for use of feeds.
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Tagi: veil of ignorance, lurid images, ipad, system chip, sgx, source link, core processor, x ray, s central, engineering firm, energy use, system on chip, reverse engineering, cortex, hummingbird, mobo, a8, model number, latency, stacks
Posted by on under brain waves, lou gehrig, microelectrodes, bioengineer, greger, electrical activity, dease, electrodes, l a times, cortex, university of utah, cursor, excerpt from, colleagues, stroke, trauma, lt, peoe |
cortex writes with an excerpt from the L.A. Times: "In a first step toward helping severely paralyzed people communicate more easily, Utah researchers have shown that it is possible to translate recorded brain waves into words, using a grid of electrodes placed directly on the brain. ... The device could benefit people who have been paralyzed by stroke, Lou Gehrig's disease or trauma and are 'locked in' — aware but unable to communicate except, perhaps, by blinking an eyelid or arduously moving a cursor to pick out letters or words from a list. ... Some researchers have been attempting to 'read' speech centers in the brain using electrodes placed on the scalp. But such electrodes 'are so far away from the electrical activity that it gets blurred out,' [University of Utah bioengineer Bradley] Greger said. ... He and his colleagues instead use arrays of tiny microelectrodes that are placed in contact with the brain, but not implanted. In the current study, they used two arrays, each with 16 microelectrodes."
Read more of this story at Slashdot.
Tagi: brain waves, lou gehrig, microelectrodes, bioengineer, greger, electrical activity, dease, electrodes, l a times, cortex, university of utah, cursor, excerpt from, colleagues, stroke, trauma, lt, peoe
