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A Low-Power Multimedia SoC with Fully Programmable 3D Graphics for Mobile Devices
September/October 2009 (vol. 29 no. 5)
pp. 82-90
Jeong-Ho Woo, Korea Advanced Institute of Science and Technology
Ju-Ho Sohn, LG Electronics
Hyejung Kim, Korea Advanced Institute of Science and Technology
Hoi-Jun Yoo, Korea Advanced Institute of Science and Technology
A low-power multimedia SoC integrates a fully programmable 3D graphics for mobile devices with an MPEG4/JPEG codec and H.264 decoder for mobile devices. A mobile unified shader achieves programmable vertex shading and pixel shading in a single die, reducing silicon area and power consumption by 35 percent and 28 percent, respectively. A logarithmic lighting engine and specialized lighting instruction improve the vertex fill rate, including transformations and lighting, to 9.1 million vertices per second. Implemented on a 6.4 mm × 6.4 mm chip with 0.13 μm CMOS logic, the SoC consumes less than 195 mW for 3D graphics applications at 1.2 V supply voltage and 100 MHz operating frequency and less than 152mW for video applications.

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Index Terms:
Mobile multimedia SoC, programmable, 3D graphics, mobile unified shader, low-power design
Citation:
Jeong-Ho Woo, Ju-Ho Sohn, Hyejung Kim, Hoi-Jun Yoo, "A Low-Power Multimedia SoC with Fully Programmable 3D Graphics for Mobile Devices," IEEE Computer Graphics and Applications, vol. 29, no. 5, pp. 82-90, Sept.-Oct. 2009, doi:10.1109/MCG.2009.88
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