An Analog Two-Dimensional Discrete Cosine Transform Processor for Focal-Plane Image Compression (Special Section on Analog Circuit Techniques for System-on-Chip Integration)
スポンサーリンク
概要
- 論文の詳細を見る
This paper presents an analog 2-dimensional discrete cosine transform (2-D DCT) processor for focal-plane image compression. The on-chip analog 2-D DCT processor can process directly the analog signal of the CMOS image sensor. The analog-to-digital conversion (ADC) is performed after the 2-D DCT, and this leads to efficient AD conversion of video signals. Most of the 2-D DCT coefficients can be digitized by a relatively low-resolution ADC or a zero detector. The quantization process after the 2-D DCT can be realized by the ADC at the same time. The 8x8-point analog 2-D DCT processor is designed by switched-capacitor (SC) coefficient multipliers and an SC analog memory based on 0.35μm CMOS technology. The 2-D DCT processor has sufficient precision, high processing speed, low power dissipation, and small silicon area. The resulting smart image sensor chips with data compression and digital transmission functions are useful for the high-speed image acquisition devices and portable digital video camera systems.
- 社団法人電子情報通信学会の論文
- 1997-02-25
著者
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Yoshida Makoto
Department of Internal Medicine, Kitasato University School of Medicine
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Matsuzawa A
Matsushita Electric Industrial Co. Ltd. Osaka Jpn
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Matsuzawa Akira
Advanced Lsi Technology Development Center Matsushita Electric Co. Ltd.
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Tadokoro Yoshiaki
Dept. Of Information And Computer Sciences Toyohashi University Of Technology
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Tadokoro Yoshiaki
Department Of Information And Computer Sciences/intelligent Sensing System Research Center Toyohashi
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Tadokoro Yoshiaki
Department Of Information And Computer Sciences Toyohashi University Of Technology
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Tadokoro Y
Dept. Of Information And Computer Sciences Toyohashi University Of Technology
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Yoshida M
Ntt Advanced Technol. Corp. Tokyo Jpn
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KAWAHITO Shoji
Department of Information and Computer Sciences, Toyohashi University of Technology
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MATSUZAWA Akira
Semiconductor Research Center, Matsushita Electric Industrial Co., Ltd.,
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Kawahito Shoji
Department Of Electrical And Electronic Engineering Toyohashi University Of Technology
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Matsuzawa Akira
Semiconductor Research Center Matsushita Electric Industrial Co. Ltd.
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Yoshida Makoto
Department Of Biology Faculty Of Science University Of Kochi
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