Name
Abstract | ||
|---|---|---|
A burst image sensor named Hanabi, meaning fireworks in Japanese, includes a branching CCD and multiple CMOS readout circuits. The sensor is backside-illuminated with a light/charge guide pipe to minimize the temporal resolution by suppressing the horizontal motion of signal carriers. On the front side, the pixel has a guide gate at the center, branching to six first-branching gates, each bifurcating to second-branching gates, and finally connected to 12 (=6x2) floating diffusions. The signals are either read out after an image capture operation to replay 12 to 48 consecutive images, or continuously transferred to a memory chip stacked on the front side of the sensor chip and converted to digital signals. A CCD burst image sensor enables a noiseless signal transfer from a photodiode to the in-situ storage even at very high frame rates. However, the pixel count conflicts with the frame count due to the large pixel size for the relatively large in-pixel CCD memory elements. A CMOS burst image sensor can use small trench-type capacitors for memory elements, instead of CCD channels. However, the transfer noise from a floating diffusion to the memory element increases in proportion to the square root of the frame rate. The Hanabi chip overcomes the compromise between these pros and cons. |
Year | DOI | Venue |
|---|---|---|
2021 | 10.3390/s21072506 | SENSORS |
Keywords | DocType | Volume |
ultrahigh-speed imaging, branching image sensor, super-temporal resolution | Journal | 21 |
Issue | ISSN | Citations |
7 | 1424-8220 | 0 |
PageRank | References | Authors |
0.34 | 0 | 9 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Nguyen Hoai Ngo | 1 | 0 | 0.34 |
| Kazuhiro Shimonomura | 2 | 57 | 13.11 |
| Taeko Ando | 3 | 0 | 0.34 |
| Takayoshi Shimura | 4 | 0 | 0.34 |
| Heiji Watanabe | 5 | 0 | 0.34 |
| Kohsei Takehara | 6 | 0 | 0.34 |
| Anh Quang Nguyen | 7 | 0 | 1.69 |
| Edoardo Charbon | 8 | 385 | 74.69 |
| Takeharu Goji Etoh | 9 | 0 | 0.34 |