A 300-kpixel Ultrahigh-Speed Charge-Coupled Device With a Dynamic Range of 48.6 dB at 1 Million Frames per Second

被引:3
作者
Arai, Toshiki [1 ]
Kitamura, Kazuya [1 ]
Yonai, Jun [1 ]
Ohtake, Hiroshi [1 ]
Hayashida, Tetsuya [2 ]
Maruyama, Hirotaka [3 ]
van Kuijk, Harry [5 ]
Etoh, Takeharu Goji [4 ]
机构
[1] NHK Sci & Technol Res Labs, Tokyo 1578510, Japan
[2] NHK Engn Serv, Tokyo 1578540, Japan
[3] NHK Japan Broadcasting Corp, Tokyo 1508001, Japan
[4] Kinki Univ, Osaka 5778502, Japan
[5] Teledyne DALSA Profess Imaging, NL-5656 AE Eindhoven, Netherlands
关键词
Charge-coupled device (CCD) image sensors; dynamic range; high-speed electronics; HIGH-SENSITIVITY;
D O I
10.1109/TED.2012.2184117
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An ultrahigh-speed charge-coupled device (CCD) with an increased dynamic range at a frame rate above 200 kilo-frames per second (kfps) was developed. The dynamic range of a CCD operating at extremely high speeds is reduced as a result of rounding of a sharp voltage waveform inside the device. The amount of rounding was estimated by using an equivalent circuit model of one kind of electrodes in a four-phase CCD memory. The simulation showed that the calculated voltage at a quarter period and the measured saturation signal level have similar dependence on the frame rate. To suppress the drop in voltage at a quarter period, the active pixels and the driving circuit were divided, and the resistance of the pixel wiring was reduced. A new ultrahigh-speed CCD, whose active pixels are divided into eight separately driven blocks and that employs dual wirings to each electrode of the four-phase CCD memory, was designed and fabricated. A driving evaluation experiment showed that the ultrahigh-speed CCD had a dynamic range of 48.6 dB at 1 000 000 fps. This range is equivalent to 8-bit digital and is 2.5 times higher than that of a previous ultrahigh-speed CCD.
引用
收藏
页码:1107 / 1113
页数:7
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