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Kurihara Lab
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The lab researches coding, which protects data and handles it efficiently.
AboutAbout the lab
Protecting data with coding technology.
The Kurihara Lab researches coding, a technology that protects digital data from noise and eavesdropping.
There are three types of coding: source coding, which aims at efficiency; encryption, which aims at security; and channel coding, which aims at reliability.
On its website, the lab explains the relationship between reliability and efficiency, using distributed coding, which splits data across multiple hard drives, as an example.
Past research themes, such as private information retrieval and distributed storage systems, are also posted on the website.
Key terms
- Coding
- A technology that protects digital data from noise and eavesdropping. By purpose, it divides into three types: efficiency, security, and reliability
- Distributed coding
- Coding that splits data across multiple devices so that the original data can be recovered even if some of them fail
- Trade-off
- A relationship in which improving one performance measure lowers another. In coding, it is difficult to improve both efficiency and reliability at the same time
ResearchResearch themes
This lab researches coding technologies that protect digital data from noise and eavesdropping when it is transmitted or stored. Its website introduces past research themes covered in papers from 2013 to 2022, such as private information retrieval and distributed storage systems.
*Illustrative imageThe trade-off between efficiency and reliability
Coding is used for efficiency and for reliability, but it is known to be difficult to improve both at the same time. On its website, the lab uses two types of QR codes as an example to explain the relationship between the amount of data that can be recorded and robustness against smudges.
*Illustrative imageData storage with distributed coding
The lab explains coding with an example of splitting data A and B across multiple hard drives. If the result of A+B is also stored, three drives can withstand the failure of one drive, and if four drives are available, a coding scheme that withstands the failure of two drives is also possible.
MembersFaculty
- Masazumi Kurihara
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Data storage mediums” Unnerving duck / CC0 (cropped)
- The trade-off between efficiency and reliability: “DataMatrix code on a bottle of milk” Енин Арсений / CC0 (cropped)
- Data storage with distributed coding: “Laptop-hard-drive-exposed” Evan-Amos / CC BY-SA 3.0 (cropped)
- Related lab (大坐畠 智 研究室): “Cellular network antenna mount Haringey London” Acabashi / CC BY-SA 4.0 (cropped)
- Related lab (大濱 靖匡・Santoso Bagus 研究室): “NASA secure communication console at National Cryptologic Museum.agr” ArnoldReinhold / CC BY-SA 4.0 (cropped)
- Related lab (李 還幇 研究室): “Church Avenue IND td” Tdorante10 / CC BY-SA 4.0 (cropped)
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