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EETE JULAUG 2015

Audio & Video processing Automotive video decoder targets reversing camera function With a MIPI-CSI2 output interface to support next-generation SoCs, Intersil’s highly integrated TW9992 takes both singleended and differential CVBS inputs from a vehicle’s backup (reversing) camera. TW9992 is an analogue video decoder, with an integrated MIPI-CSI2 output interface that provides compatibility with the newest SoC processors. The decoder’s MIPI-CSI2 interface simplifies design by making it easier to interface with SoCs, while also lowering the system’s EMI profile. The TW9992 decoder takes both single-ended and differential composite video inputs from a vehicle’s backup safety camera. Designed with built-in diagnostics and for superior video quality, the TW9992 addresses the biggest challenges faced by automotive video systems. The decoder’s automatic contrast adjustment (ACA) image enhancement feature overcomes a major challenge for backup camera systems by adapting to rapidly changing lighting conditions. ACA is able to automatically boost up or reduce the brightness/contrast of an image for greater visibility and safety. Vehicle backup cameras typically employ differential twisted pair cables that require designers to use an operational amplifier (op amp) in front of the video decoder to convert the differential signal to single-ended. The TW9992 decoder eliminates the need for an external op amp by supporting ‘Transparent’ truck lets drivers behind it see road ahead A prototype “Safety Truck” developed by Samsung allows drivers following behind it to “see through” the truck to the road ahead. The truck features a front-facing wireless camera and four rear monitors in the back that provide a streamed real-time view of the traffic conditions in the road ahead to trailing drivers behind the truck. The company developed the truck to help reduce the risk of accidents caused by drivers attempting to pass such large vehicles, which block the view ahead. The prototype truck was tested in Argentina where two-lane roads - and traffic accidents - are common. Nearly one person per hour dies in a traffic accident there, according to Samsung, and a majority of fatalities are caused by drivers attempting to pass other vehicles. Another advantage of the truck, according to Samsung, is that it could reduce accidents due to sudden braking in the event of a slowdown ahead or an animal crossing the road. The truck also features a night-vision mode which allows drivers to still see the display clearly at night. Samsung is working to obtain regulatory approval for the Safety Truck. Samsung Electronics global.samsungtomorrow.com direct differential CVBS inputs. Intersil www.intersil.com AMD beats Nvidia to 2.5-D graphics AMD beat archrival Nvidia to the goal of rolling out high-end graphics cards that use DRAM chip stacks to provide more memory bandwidth — and thus performance — on relatively small, low-power boards. AMD rolled out the four new graphics cards at E3, a conference for serious gamers and those who develop for them. The new Radeon R9 300 series is based on AMD’s new Fiji GPUs and High Bandwidth Memory (HBM) chip stacks from SK Hynix. “Fiji is the most complex and highest performance GPU we’ve ever built — it is the first with High Bandwidth Memory,” AMD CEO Lisa Su told attendees. AMD described the 2.5-D HBM stack earlier this month but did not say which GPU would use the next-generation memory developed with SK Hynix. Its flagship Radeon Fury X uses 4GB of HBM memory, delivering up to 512 Gbits/second of memory bandwidth — an increase of around 63% over the previous generation Radeon R9 290X, principal analyst Patrick Moorhead of Moor Insights & Strategy wrote — to reach a 1.5x improvement in performance per watt. The 28nm Fury X is a liquid cooled card with 4,096 stream processors and 64 compute units at clock speeds up to 1.05 GHz. Fury X can perform at up to 8.6 GFLOPS, a 65% over the previous generation, to display games at 45 frames per second (FPS) for 4K and 65 fps on future 5K displays. “The AMD R9 Fury X offers a brand new architecture to entice even gamers with the latest cards to upgrade,” Moorhead continued. “AMD’s new GPU offerings are part of the company’s effort to push for more power efficiency and performance while still adding new and beneficial features with HBM enabling new form factors as well as DX12 and new drivers to improve performance.” AMD www.amd.com Multicore SHARC+ARM SoC targets low-power real-time audio Analog Devices has unveiled eight SHARC processors as part of a new high-performance, power-efficient, realtime series that delivers peak performance greater than 24 giga-floating-point operations per second using two enhanced SHARC+ cores and advanced DSP accelerators (FFT, FIR, IIR). The ADSP-SC58x and ADSP-2158x series consume less than 2 watts at high temperature, making the new processor line-up more than 5 times more power efficient than previous SHARC products and more than 2 times more efficient than the nearest competitive processors, according to the manufacturer. This advantage provides industry leading digital signal processing performance for applications where thermal management sets the limit for power consumption, or where the higher costs and lower reliability of fans cannot be tolerated. Applications include automotive, consumer and professional audio, multi-axis motor control, and energy distribution systems. The ADSP-SC58x products complement the SHARC+ cores and DSP accelerators with the addition of an ARM® Cortex-A5 processor, with FPU and Neon® DSP extensions to handle additional real-time processing tasks and manage peripherals used to interface to time-critical. Analog Devices www.analog.com 30 Electronic Engineering Times Europe July-August 2015 www.electronics-eetimes.com


EETE JULAUG 2015
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