Author
Jiei Shiyarubonou Toomasu
Bio: Jiei Shiyarubonou Toomasu is an academic researcher. The author has contributed to research in topics: Capacitive sensing & Pressure sensor. The author has an hindex of 1, co-authored 1 publications receiving 4 citations.
Topics: Capacitive sensing, Pressure sensor
Papers
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Patent•
13 Sep 1989
TL;DR: In this article, a constant capacitance capacitor is series-connected with a variable-capacitance capacitor whose capacitance varies with the pressure, and the output voltage of the comparator is stored into a memory in synchronism with a clock pulse signal.
Abstract: A constant-capacitance capacitor is series-connected with a variable-capacitance capacitor whose capacitance varies with the pressure. The other end of the variable-capacitance capacitor is connected to the ground potential terminal of a D.C. power source. The terminal voltage of the variable-capacitance capacitor is compared with a threshold voltage provided by the D.C. power source by means of a comparator. An output voltage of the comparator is stored into a memory in synchronism with a clock pulse signal. An output voltage of the memory is integrated by an integrator. An output voltage of the integrator is supplied to a buffer amplifier for lowering the signal source impedance with respect to the output voltage. An output voltage obtained from the buffer amplifier is fed back to the other end of the constant-capacitance capacitor and at the same time supplied to an output terminal.
79 citations
Patent•
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TL;DR: In this paper, a color linear sensor of a simple structure which can accurately measure a degree of a color mixture in a sensor section is presented, which can prevent sensors from being displaced from each other in position, simplify a configuration of an external circuit, and which can prevents a colour mixture from being caused by signal charges deteriorated after they are transferred by a transfer register.
Abstract: The present invention is directed to a color linear sensor of a simple structure which can accurately measure a degree of a color mixture in a sensor section. In a color linear sensor having a dot-sequential sensor array (1), only one pixel of a predetermined color (R) in a reference pixel region (3) is allowed to receive an incident light. Then, a degree of color mixture is estimated by calculating a level difference between a signal output of this pixel and a signal output of a pixel of the same color as that of the former pixel in an effective pixel region (2). Also, the present invention is to provide a color linear sensor which can prevent sensors from being displaced from each other in position, simplify a configuration of an external circuit and which can prevent a color mixture from being caused by signal charges deteriorated after they are transferred by a transfer register. In a color linear sensor having a dot-sequential sensor array (1), read-out gates (22, 24) are formed as two-stage configuration for sequentially reading out signal charges from respective sensors (1R), (1G), (1B) of the dot-sequential sensor array (1) to a CCD register (23) at the unit of pixels, thereby to sequentially output signal charges of one line at every color in a line-sequential fashion.
7 citations
Patent•
26 Apr 1991
TL;DR: In this paper, a token ring LAN is constituted of a constitution controller 1, a double ring transmission line 2, a spur (branch) 3, a special frame control mechanism 4, a station 5, and a data transmission right frame 6.
Abstract: PURPOSE:To attain the sure detection of a fault by circulating at least one frame or above to detect the fault of the transmission line. CONSTITUTION:A token ring LAN is constituted of a constitution controller 1, a double ring transmission line 2, a spur (branch) 3, a special frame control mechanism 4, a station 5, and a data transmission right frame 6. A special frame added with a global address is circulated through the transmission line 2 as a transmission address of the special frame and when the special frame is circulated not once but for plural number of times through the transmission line 2, it is decided that the transmission line is normal. Thus, the fault of the transmission line is surely detected without malfunction.
3 citations
Patent•
10 Dec 1999
TL;DR: In this article, a fluid pressure transducer is proposed to provide a capacitive pressure transducers which is economical to manufacture, is high in reliability, is relatively low in cost, is improved in the case of use with a conductive fluid, and does not contain errors in output.
Abstract: PROBLEM TO BE SOLVED: To provide a capacitive pressure transducer which is economical to manufacture, is high in reliability, is relatively low in cost, is improved in the case of use with a conductive fluid, and does not contain errors in output. SOLUTION: A fluid pressure sensor 10 comprises a thin and relatively flexible ceramic diaphragm 14 placed to a hard ceramic substrate 16 at a narrow interval by a glass ring-shaped body 18 placed in a housing 46 with a port 46a for a fluid to be detected, which exerts its pressure on the outer surface of the diaphragm. An electronic circuit 50 is placed in a chamber 38 formed between a connector 36 and the outer surface 12b of the above-mentioned substrate. A source condenser plate 20 and a source trace 20b are printed on the above-mentioned diaphragm, and a detecting plate 22 and a detecting trace 22b are printed on the substrate by guard plates 28, 28', 28"; 30, 30" completely surrounding the above-mentioned source, detecting plate, and trace and printed on both the above-mentioned diaphragm and the substrate.