Microsoft reveals specifications for processors in HoloLens hologram eyeglasses

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The Verge Chinese Station reported on August 24th

For the special processor inside the HoloLens hologram glasses, Microsoft finally gave a detailed explanation. Although in April this year, the technology media The Verge had exclusive access to the dismantled version of the HoloLens development, but the details of the special holographic processing unit (HPU) it carries are still highly confidential. Earlier this year, Microsoft announced most of the technical specifications of HoloLens holographic glasses, but has never said that this particular HPU data has been designed to perform most of the processing work, so the CPU and GPU can only Take over the task of application startup and holographic screen display. Microsoft has custom-designed the HPU. It receives all the data through the camera and sensors and processes it in real-time so that users can use the gestures accurately.

This week, at the Hot Chips conference in California, Microsoft's equipment engineer Nick Baker demonstrated the internal structure of the HPU and its performance. It is reported that Microsoft's special custom HPU is a 28-nm coprocessor from TSMC, uses 24 DSP cores from Tensilica, the number of logic gates is about 65 million, and it is equipped with 8MB of SRAM, and is attached to one The layer is equipped with 1GB of low-power DDR3 memory, which is different from the 1GB memory reserved for the Intel Atom Cherry Trail processor, and the HPU itself has the ability to process about 1 trillion operations per second.

This low-power HPU consumes less than 10W when processing gestures and environmental sensing. It is reported that it also includes PCIe and standard serial interfaces. In addition, Microsoft has added 10 custom instructions to further speed up the processing of special instructions from the augmented reality algorithm in HoloLens. (Author: Tom Warren compile: Dahe)

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