| Presentation | 2018-03-02 Approximate computing based on extension of DRAM refresh interval and data correction Takamasa Fukasawa, Kimiyoshi Usami, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | As DRAM capacity increases, there is concern that energy consumption will increase due to the refresh. Therefore, we propose a method to reduce the energy consumption of DRAM. We propose a method of approximate computing that extends the automatic refresh interval of DRAM to reduce energy consumption. By increasing the automatic refresh interval, energy consumption caused by refreshing can be reduced. However, there is a problem that data held in the DRAM volatilizes and data errors occur. In order to suppress the mistake rate, we proposed a method to incorporate data reconstruction using block reversal method, parity check, median filter, etc., and the evaluation results are shown. As a result, we were able to reduce energy consumption by about 50~60% while maintaining the image quality at PSNR: 30 dB, SSIM: 0.99. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DRAM / approximate computing / refresh / block reversal method / median filter |
| Paper # | VLD2017-121 |
| Date of Issue | 2018-02-21 (VLD) |
| Conference Information | |
| Committee | VLD / HWS |
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| Conference Date | 2018/2/28(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okinawa Seinen Kaikan |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroyuki Ochi(Ritsumeikan Univ.) |
| Vice Chair | Noriyuki Minegishi(Mitsubishi Electric) |
| Secretary | Noriyuki Minegishi(Hiroshima City Univ.) / (NTT) |
| Assistant | |
| Paper Information | |
| Registration To | Technical Committee on VLSI Design Technologies / Technical Committee on Hardware Security |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Approximate computing based on extension of DRAM refresh interval and data correction |
| Sub Title (in English) | |
| Keyword(1) | DRAM |
| Keyword(2) | approximate computing |
| Keyword(3) | refresh |
| Keyword(4) | block reversal method |
| Keyword(5) | median filter |
| 1st Author's Name | Takamasa Fukasawa |
| 1st Author's Affiliation | Shibaura Institute of Technology(SIT) |
| 2nd Author's Name | Kimiyoshi Usami |
| 2nd Author's Affiliation | Shibaura Institute of Technology(SIT) |
| Date | 2018-03-02 |
| Paper # | VLD2017-121 |
| Volume (vol) | vol.117 |
| Number (no) | VLD-455 |
| Page | pp.pp.193-198(VLD), |
| #Pages | 6 |
| Date of Issue | 2018-02-21 (VLD) |