| Presentation | 2018-01-30 LED-to-Camera Communication Mechanism Based on Flash Blinks against Inter-Frame Gaps and Frame Drops Yuki Hokazono, Aoi Koizuka, Makoto Suzuki, Yoshiaki Narusue, Hiroyuki Morikawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | LED-to-camera communication for smartphones is promising to enable low-cost, small-size, and intuitive data access to IoT devices. For fast and reliable communication under the rolling shutter effect, it is necessary to deal with packet losses due to inter-frame gaps and frame drops. In this paper, we present IoTorch, a fast and reliable LED-to-camera communication which efficiently prevents these packet losses. IoTorch consists of two core mechanisms: 1) a packet retransmission strategy focusing on periodicity of inter-frame gaps, and 2) an ACK mechanism against frame drops using a smartphone's built-in flash focusing on its delay characteristic. In addition, IoTorch is capable of low-power implementation by data transmission trigger using flash. The experimental results using multiple smartphone models show that IoTorch achieves more than 14x throughput of previous works without data losses. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LED-to-camera communication for smartphones / Rolling shutter effect / Visible light communication |
| Paper # | ASN2017-95 |
| Date of Issue | 2018-01-23 (ASN) |
| Conference Information | |
| Committee | ASN |
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| Conference Date | 2018/1/30(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Yufugo-kan (Oita) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Ambient intelligence, Sensor networks, etc. |
| Chair | Hiraku Okada(Nagoya Univ.) |
| Vice Chair | Shigeki Shiokawa(KAIT) / Jin Nakazawa(Keio Univ.) / Satoru Yamano(NEC) |
| Secretary | Shigeki Shiokawa(NICT) / Jin Nakazawa(Sophia Univ.) / Satoru Yamano |
| Assistant | Hiroto Aida(Doshisha Univ.) / Tomoyuki Ota(Hiroshima City Univ.) / Tatsuya Kikuzuki(Fujitu Lab.) / Ryo Nakano(HITACHI) / Yoshifumi Hotta(Mitsubishi Electric) |
| Paper Information | |
| Registration To | Technical Committee on Ambient intelligence and Sensor Networks |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | LED-to-Camera Communication Mechanism Based on Flash Blinks against Inter-Frame Gaps and Frame Drops |
| Sub Title (in English) | |
| Keyword(1) | LED-to-camera communication for smartphones |
| Keyword(2) | Rolling shutter effect |
| Keyword(3) | Visible light communication |
| 1st Author's Name | Yuki Hokazono |
| 1st Author's Affiliation | Tokyo University(Tokyo Univ.) |
| 2nd Author's Name | Aoi Koizuka |
| 2nd Author's Affiliation | Tokyo University(Tokyo Univ.) |
| 3rd Author's Name | Makoto Suzuki |
| 3rd Author's Affiliation | Tokyo University(Tokyo Univ.) |
| 4th Author's Name | Yoshiaki Narusue |
| 4th Author's Affiliation | Tokyo University(Tokyo Univ.) |
| 5th Author's Name | Hiroyuki Morikawa |
| 5th Author's Affiliation | Tokyo University(Tokyo Univ.) |
| Date | 2018-01-30 |
| Paper # | ASN2017-95 |
| Volume (vol) | vol.117 |
| Number (no) | ASN-426 |
| Page | pp.pp.71-76(ASN), |
| #Pages | 6 |
| Date of Issue | 2018-01-23 (ASN) |