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Proceedings Paper

Ultrahigh-definition experimental camera system with an 8M-pixel CCD
Author(s): Kohji Mitani; Masayuki Sugawara; Hiroshi Shimamoto; Charles R. Smith; Michael G. Farrier; Queintin Tang; Fumio Okano
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Paper Abstract

An ultra-high definition experimental camera system has been designed with double the horizontal and vertical resolution of HDTV. An 8M-pixel CCD with a progressive 60 frame-per- second scan-rate has been developed for the system. The 34 mm X 17.2 mm image area has 4046 (H) X 2048 (V) active imaging pixels with 8.4-micrometers squares. This CCD has a split- frame transfer structure and sixteen 37.125 MHz outputs so that the vertical and horizontal transfer frequencies are almost the same as those of HDTV. The split-frame transfer structure halves the required VCCD clock speeds and thus improves charge transfer efficiency. The multiple-output structure with its 16 outputs enables high data-rate imaging for ultra-high resolution moving pictures. In the signal processing section, analog gain adjustment circuits correct for the mismatches in the characteristics of outputs, and a correlated double-sampling technology is employed on each of the 16 CCD output signals. The output signals are digitized by 12-bit ADCs. The converted signals are then sent to the digital signal processing (DSP) circuits. In the DSP circuits, the upper half of the captured image is vertically inverted. All of the output data is then merged into a 4K X 2K pixel image and reformatted to create twenty-four 640 (H) X 480 (V) pixel sub-images for image processing. After contour compensation processing, the video signals are converted into an analog signal and presented on two ultra high resolution video monitors.

Paper Details

Date Published: 15 May 2000
PDF: 7 pages
Proc. SPIE 3965, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications, (15 May 2000); doi: 10.1117/12.385437
Show Author Affiliations
Kohji Mitani, NHK Science and Technical Research Labs. (Japan)
Masayuki Sugawara, NHK Science and Technical Research Labs. (Japan)
Hiroshi Shimamoto, NHK Science and Technical Research Labs. (Japan)
Charles R. Smith, DALSA Inc. (Canada)
Michael G. Farrier, DALSA Inc. (United States)
Queintin Tang, DALSA Inc. (Canada)
Fumio Okano, NHK Science and Technical Research Labs. (Japan)

Published in SPIE Proceedings Vol. 3965:
Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications
Morley M. Blouke; Nitin Sampat; Thomas Yeh; Nitin Sampat; George M. Williams Jr.; Thomas Yeh, Editor(s)

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