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7 巻, 10 号
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佐藤 拓宋, 上田 光宏1968 年 7 巻 10 号 p. 675-682
発行日: 1968/10/10
公開日: 2009/11/26
ジャーナル フリーThis paper presents the principle of new methods which convert electrical information into optical one on a real time basis.
Optical signal processors have several advantages over other processors, principally in their inherent two-dimensional nature, their large information capacity, and their ability to perform of usefal mathematical operations.
Conventional optical processors utilize a film as a medium for generating the signal function; this operation takes much time and it prevents the real time processing of data.
The new methods which circumvent this difficulty are obtained by making use of the various forms of the interaction between light and ultrasonic wave.
This paper first gives a review of the principle of the interaction of light and ultrasonic wave and then a character recognition device, a real-time hologram and a 3rd order correlator are illustrated as few examples of the application of the above principle.抄録全体を表示PDF形式でダウンロード (1808K) -
山崎 弘郎, 石川 宏俊1968 年 7 巻 10 号 p. 683-690
発行日: 1968/10/10
公開日: 2009/11/26
ジャーナル フリーA parametric modulator using silicon variable capacitance diodes is best fitted for low level d-c signal amplification, because of its inherent high input impedance and low noise.
In this paper, a new solid state electrometer including the modulator is described, its performances and applications are given.
The carrier amplifier performs dual function in the circuit; it amplifies the modulated signal and at the same time works as an oscillator to drive the parametric modulator. This configuration makes the circuit simple and reliable.
The dynamic performance of the electrometer is analysed according to the theory proposed in reference. Input offset and temperature drift are analysed and compared with the measured data: the offset voltage is less than ±0.5mV, the offset current is less than ±0.6pA for the temperature range -10-60°C, and is less than 0.02pA when temperature is kept below 25°C.
The equivalent input noise is as low as the thermal agitation noise of a resistor connected to the modulator input.
Several applications are given: Those include a pH meter, an ORP meter, a radio-isotope instrument, a gas-chromatograph, and a logarithmic amplifier.抄録全体を表示PDF形式でダウンロード (1132K) -
桜井 良文1968 年 7 巻 10 号 p. 691-700
発行日: 1968/10/10
公開日: 2009/11/26
ジャーナル フリーPDF形式でダウンロード (1252K) -
松本 治弥1968 年 7 巻 10 号 p. 701-711
発行日: 1968/10/10
公開日: 2009/11/26
ジャーナル フリーPDF形式でダウンロード (2186K) -
有本 卓1968 年 7 巻 10 号 p. 712-720
発行日: 1968/10/10
公開日: 2009/11/26
ジャーナル フリーPDF形式でダウンロード (1093K) -
福田 隆平1968 年 7 巻 10 号 p. 721-728
発行日: 1968/10/10
公開日: 2009/11/26
ジャーナル フリーPDF形式でダウンロード (1053K) -
株式会社 北辰電機製作所1968 年 7 巻 10 号 p. 738-739
発行日: 1968/10/10
公開日: 2009/11/26
ジャーナル フリーPDF形式でダウンロード (901K)
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