A pulse modulated vision chip in eye-safe band

DOI Web Site 2 Citations 6 References
  • Uehara Akihiro
    Nara Institute of Science and Technology, Graduate School of Materials Science
  • Tokida Naoyuki
    Nara Institute of Science and Technology, Graduate School of Materials Science
  • Tokuda Takashi
    Nara Institute of Science and Technology, Graduate School of Materials Science
  • Ohta Jun
    Nara Institute of Science and Technology, Graduate School of Materials Science
  • Nunoshita Masahiro
    Nara Institute of Science and Technology, Graduate School of Materials Science

Bibliographic Information

Other Title
  • アイセーフ帯パルス変調型ビジョンチップ
  • アイセーフタイ パルス ヘンチョウガタ ビジョンチップ

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Description

We propose and demonstrate a vision chip that can detect eye-safe light by using SiGe heterobipolar transistor process. This process realizes monolithic integration with an eye-safe heterophototransistor(HPT)and CMOS circuits. The responsivity of the HPT is simulated and is found to have enough sensitivity in the eye-safe region. To employ the HPT in a vision chip, we design a test chip with pulse frequency modulation circuits, which has a wide dynamic range without accumulation action. The chip designed using 0.35μm CMOS 2P3M process works well under a power supply of 0.7V and has a dynamic range of 20dB and a power consumption of less than 1μ W. Also mutual inhibition is implemented in the chip to realize elemental image processing function.

Journal

  • ITE Technical Report

    ITE Technical Report 24.27 (0), 23-28, 2000

    The Institute of Image Information and Television Engineers

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