Yoshiaki Hagiwara
Yoshiaki Hagiwara (July 4, 1948[1] – ) is a Japanese scientist, engineer, and inventor who spent his career at Sony developing image sensors and related technologies.
Early life
[edit]Under his birth name Yoshiaki Tsuneo Daimon, he earned his BS degree in electrical engineering and physics at the California Institute of Technology in 1971,[2] followed by is MS degree in 1972 and Ph.D. in 1975 at the same University,[1] under the guidance of his advisor Carver Mead. He changed his name to Hagiwara upon getting married in 1974.
Inventions
[edit]The first mass-produced consumer CCD video camera, the CCD-G5, was released by Sony in 1983, based on a prototype developed by Hagiwara in 1981.[3]
Hagiwara was elected Fellow of the IEEE in 2001, "For pioneering work on, and development of, solid-state imagers", for, among other things, his 1975 invention of a photodiode that was later branded by Sony the "hole accumulation device" (HAD), and which Sony and he claim as the origin of the pinned photodiode.[4][5]
See also
[edit]References
[edit]- 1 2 Mead, Carver A.; Richard D. Pashley; Lee D. Britton; Yoshiaki T. Daimon; S. F. Sando (October 1976). "128-bit Multicomparator" (PDF). IEEE Journal of Solid-State Circuits. 11 (5): 692–695. Bibcode:1976IJSSC..11..692M. doi:10.1109/JSSC.1976.1050799. S2CID 27262034.
- ↑ The Big T (PDF). California Institute of Technology. 1971. p. 94.
- ↑ Hagiwara, Yoshiaki (2001). "Microelectronics for Home Entertainment". In Oklobdzija, Vojin G. (ed.). The Computer Engineering Handbook. CRC Press. pp. 41–6. ISBN 978-0-8493-0885-7.
- ↑ Sony Corporation. "Pinned Photodiode Adopted for Back-Illuminated CMOS Image Sensors". Archived from the original on 15 January 2022. Retrieved 7 March 2022.
- ↑ Hagiwara, Yoshiaki (December 2021). "Invention and Historical Development Efforts of Pinned Buried Photodiode". 2021 International Conference on Electrical, Computer and Energy Technologies (ICECET). pp. 1–6. doi:10.1109/ICECET52533.2021.9698439. ISBN 978-1-6654-4231-2. S2CID 246751831.
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