Novel Opt-coupling Transistor by LED and PD and its Application

Fujita, Jun–ichi; Sato, Daisuke; Okamoto, K.; Hattori, Tetsuo

doi:10.2991/jrnal.2014.1.3.15

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…In order for the image processing to have such arrangement capability, we would like to introduce some related processing methods of Signal Processing in Kansei Engineering, Time Series Analysis, and Advection Diffusion in Fluid Dynamics. [11][12][13][14][15]…”

Section: Resultsmentioning

confidence: 99%

Automated Processing of Multiple-Brightness Peak Histogram Image Using Curvature and Variance Estimation

Kawakami¹,

Hattori²,

Imai³

et al. 2016

JRNAL

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Previously, we have illustrated that the Histogram Matching based on Gaussian Distribution (HMGD) is an effective automated image processing method for obtaining a better feeling impression image. However, the simple HMGD works only for the image whose histogram has just one peak. For the image whose histogram has multiplebrightness peak, it does not work as in the case of single peak histogram image. In this paper, we propose the improved method for multiple-brightness peak (HMGD-MBP). This method can not only detect multiple peaks but also estimate the variance of Gaussian distribution at each detected peak in the image histogram, using curvature computation. This paper also presents the effectiveness of the proposed method by showing the experimental results.

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Section: Resultsmentioning

confidence: 99%

Automated Processing of Multiple-Brightness Peak Histogram Image Using Curvature and Variance Estimation

Kawakami¹,

Hattori²,

Imai³

et al. 2016

JRNAL

Self Cite

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show abstract

“…Later, an audio amplifier prototype using PTT positive feedback circuit with optical coupling between highbrightness LED and PD was developed, and it was reported that the PTT even exhibited functions similar to those of a thyristor ( [3], [4], [5], [6], [7], [8]). Also, while referencing the conventional studies on BJT ( [9], [10], [11], [12]), authors have analyzed the current amplification function of the PTT based on experimental results ( [13], [14]).…”

Section: Introductionmentioning

confidence: 99%

A Consideration on Amplification Function in BJT Evers-Moll Model and PTT (II) ---- H Parameters in the Small Signal Amplifier Circuit----

Hattori,

Matoba,

Tanaka

et al. 2024

Proceedings of International Conference on Artificial Life and Robotics

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The notion of PTT (Photon Transport Transistor) has been proposed in 1989 as an optical coupling device of light emitting diode (LED) and light receiving diode (Photo Diode, PD), where the carrier of the base layer is light (Photon) only. In this paper, in order to deal with the various applications of PTT circuit more theoretically, based on the approximate VI characteristic equation of LED and PD, we newly derive the h parameters in PTT emitter common circuit, while referring to the h parameter of Bipolar Junction Transistor (BJT).

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“…After that, it has been reported that, using the PTT that consists of high-brightness LED and PD ( [3], [4], [5]). audio amplifier can be developed and that the PTT expresses not only an amplification function but also a switching function similar to a thyristor ( [6], [7], [8]).…”

Section: Introductionmentioning

confidence: 99%

A Consideration on Amplification Function in BJT Evers-Moll Model and PTT (I) ---- V-I Characteristics ----

Hattori,

Matoba,

Tanaka

et al. 2024

Proceedings of International Conference on Artificial Life and Robotics

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In 1989, the notion of Photon Transport Transistor (PTT) has been proposed by B.J. Van Zeghbroeck et al., at IBM Research Center at that time. PTT is an optical coupling device of Light Emitting Diode (LED) and light receiving diode (Photo Diode, PD) where the carrier of the base layer is light (Photon) only. Later in 1996, W. N. Cheung and Paul J. Edwards have shown that PTT can be a very low noise amplifier in a positive feedback circuit, based on theoretical calculations of the noise figure by Quantum Mechanics. In this paper we consider the amplification principle noticing the similarity of the VI characteristics between the Bipolar Junction Transistor (BJT) and PTT.

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Novel Opt-coupling Transistor by LED and PD and its Application

Cited by 6 publications

References 4 publications

Automated Processing of Multiple-Brightness Peak Histogram Image Using Curvature and Variance Estimation

Automated Processing of Multiple-Brightness Peak Histogram Image Using Curvature and Variance Estimation

A Consideration on Amplification Function in BJT Evers-Moll Model and PTT (II) ---- H Parameters in the Small Signal Amplifier Circuit----

A Consideration on Amplification Function in BJT Evers-Moll Model and PTT (I) ---- V-I Characteristics ----

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