Using checksum to reduce power consumption of display systems for low-motion content

Han, Kyungtae; Fang, Zhen; Diefenbaugh, Paul S.; Forand, Richard; Iyer, Ravi; Newell, Don

doi:10.1109/iccd.2009.5413176

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…This implementation is SoC dependant and thus not included in the PSR standard. Existing mechanisms [39,60] detect unchanged frames by comparing the hash value or checksum of each frame. While the RFB increases the cost of the display panel, PSR significantly reduces the system energy consumption.…”

Section: Display Panel Refreshmentioning

confidence: 99%

BurstLink: Techniques for Energy-Efficient Conventional and Virtual Reality Video Display

Haj-Yahya¹,

Park²,

Bera³

et al. 2021

Preprint

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Conventional planar video streaming is the most popular application in mobile systems, and the rapid growth of 360 • video content and virtual reality (VR) devices are accelerating the adoption of VR video streaming. Unfortunately, video streaming consumes significant system energy due to high power consumption of the system components (e.g., DRAM, display interfaces, and display panel) involved in this process.We propose BurstLink, a novel system-level technique that improves the energy efficiency of planar and VR video streaming. BurstLink is based on two key ideas. First, BurstLink directly transfers a decoded video frame from the host system (i.e., the video decoder or GPU) to the display panel, bypassing the host DRAM. To this end, we extend the display panel with a double remote frame buffer (DRFB), instead of the DRAM's double frame buffer, so that the system can directly update the DRFB with a new frame while updating the panel's pixels with the current frame stored in the DRFB. Second, BurstLink transfers a complete decoded frame to the display panel in a single burst, using the maximum bandwidth of modern display interfaces. Unlike conventional systems where the frame transfer rate is limited by the pixel-update throughput of the display panel, BurstLink can always take full advantage of the high bandwidth of modern display interfaces by decoupling the frame transfer from the pixel update as enabled by the DRFB. This direct and burst frame transfer of BurstLink significantly reduces energy consumption in video display by 1) reducing accesses to the host DRAM, 2) increasing the system's residency at idle power states, and 3) enabling temporal power gating of several system components after quickly transferring each frame into the DRFB.BurstLink can be easily implemented in modern mobile systems with minimal changes to the video display pipeline. We evaluate BurstLink using an analytical power model that we rigorously validate on a real modern mobile system. Our evaluation shows that BurstLink reduces system energy consumption for 4K planar and VR video streaming by 41% and 33%, respectively, and provides an even higher reduction as display resolution and/or display refresh rate increases.

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Section: Display Panel Refreshmentioning

confidence: 99%

BurstLink: Techniques for Energy-Efficient Conventional and Virtual Reality Video Display

Haj-Yahya¹,

Park²,

Bera³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Reference [3] decreased the dynamic power consumption by reducing the frame frequency. However, this proposal could not decrease the power consumption when displaying a moving picture because a low frame rate can cause a flicker phenomenon.…”

Section: Introductionmentioning

confidence: 99%

“…However, this proposal could not decrease the power consumption when displaying a moving picture because a low frame rate can cause a flicker phenomenon. Reference [3] also requires additional on-chip memory with a capacity equal to "vertical resolution × horizontal resolution × color depth," so this proposal is not easily applied to applications with resolution over FHD (1920 × 1080). Reference [4] reported an algorithm to overcome the variation in the RC delay due to the LCD load.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Slew-Rate Control for High Uniformity and Low Power in LCD Driver ICs

Choi¹,

Lee²,

Jin³

et al. 2014

JSTS:Journal of Semiconductor Technology and Science

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Abstract-A slew-rate control method of LCD driver ICs is introduced to increase uniformity between adjacent driver ICs and reduce power consumption. The slew rate of every voltage follower is calibrated by a feedback algorithm during the non-displaying period. Under normal operation mode, the slew rate is dynamically controlled for improving power efficiency. Experimental results show that the power consumption is reduced by 16% with a white pattern and by 10% with a black pattern, and display defects are successfully eliminated.

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Déjà View: Spatio-Temporal Compute Reuse for‘ Energy-Efficient 360° VR Video Streaming

Zhao

Zhang

Bhuyan

et al. 2020

2020 ACM/IEEE 47th Annual International Symposium on Computer Architecture (ISCA)

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Using checksum to reduce power consumption of display systems for low-motion content

Cited by 5 publications

References 13 publications

BurstLink: Techniques for Energy-Efficient Conventional and Virtual Reality Video Display

BurstLink: Techniques for Energy-Efficient Conventional and Virtual Reality Video Display

Dynamic Slew-Rate Control for High Uniformity and Low Power in LCD Driver ICs

Déjà View: Spatio-Temporal Compute Reuse for‘ Energy-Efficient 360° VR Video Streaming

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