IEEE Consumer Electronics Magazine - September/October 2021 - 53
The Magic Leap One shown here features 8 GB of
LPDDR4 DRAM working memory, 128 GB of
NAND flash, and 128 Mb of NOR flash. The video
resolution of this device is 1280 960 ¼ 1.23
Mpixels per eye (not even 2K resolution), and
has a 40 30 field of view. The Magic Leap One
has a battery that can support up to 3 hours of
continuous use.
Looking at the specifications for the Magic
Leap One HMD, we can guess what the memory
and storage requirements might be for a true 4K
display (say at 3840 2160 ¼ 8.29 MPixel); just
going by the megapixel ratio, without any additional
compression or other data reduction
(which are likely), it would need about 6.7
more memory and storage (54 GB of DRAM and
858 GB of NAND flash). Going to an 8K display
(7680 4320 ¼ 33.2 MPixel) would require about
4 more memory and capacity in the HMD
(216 GB of DRAM and 3.4 TB of NAND flash).
True 4K and 8K per eye HMDs will be expensive
and limited to tactical, industrial, and perhaps
high-end gaming applications for the near
future. But, in the long run, as the prices of processing,
memory, and storage decline and as
advanced battery technology and more efficient
electronics are available, creating 4K and 8K displays
and even true volumetric storage HMDs
and perhaps eventually free-floating immersive
3-D images may be possible.
&REFERENCES
1. T. Coughlin, " Immersive storage, " IEEEConsum.
Electron. Mag., vol. 8, no. 6, pp. 79-80, Nov. 2019.
2. T. Coughlin, Digital Storage in Consumer Electronics:
The Essential Guide. Berlin, Germany: Springer, 2018,
ch. 7.
3. Digital Transformation, An IEEEDigital Reality Initiative
White Paper, Nov. 2020. [Online]. Available: https://
DigitalReality.ieee.org
4. Circuit Board (Front-a and Back-b) for Magic Leap
One Teardown by iFixit in August2018. [Online].
Available: https://www.ifixit.com/Teardown/
MagicþLeapþOneþTeardown/112245
Tom Coughlin is currently the President of Coughlin
Associates, Atascadero, CA, USA. He is an IEEE
Fellow, Past-President of IEEE-USA, and is active
with the IEEE, SNIA, and SMPTE. Contact him at
tom@tomcoughlin.com.
September/October 2021
53
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IEEE Consumer Electronics Magazine - September/October 2021
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