Oki Electric Industry Co., Ltd.

Mitsubishi Denki Kabushiki Kaisha

Nippon Telegraph and Telephone Public Corporation

Kabushiki Kaisha Daini Seikosha

Hitachi Solutions, Ltd.

Jun Ueda

Kotaro Kato

Haruo Mori

Kazuo Hagimura

Hirokazu Tsukada

Masaharu Shida

Masaaki Mandai

Akira Torisawa

Katsuhiko Sato

Yoichi Nanba

An interactive whiteboard system that can be put on a desk or a floor surface is implemented. A reflection frame-equipped sheet in accordance with the present invention has a flexible sheet, and a retroreflective frame(s) that is/are fixed to given one side or given two opposite sides of the sheet.

Reflection frame-equipped sheet

A programming tool has selection means for selecting a plurality of function blocks displayed in a library format, storage means for storing the function blocks selected through the selection means in the order as they are selected, and drawing means, as a plurality of function blocks selected through the selection means are confirmed, for drawing and display the confirmed function blocks in the order as they are selected.

Programming tool

A drawing tool for drawing pattern parts with held attributes is provided. It draws pattern parts, based only on a desired pattern part being selected from a pattern part window, and the pattern part passing, along a route in which the pattern part moves with dragged onto a drawing canvas, through a desired attribute display region of attribute palettes for displaying its attributes given with respect to the pattern part, so that the attribute can be selected and set by the pattern part only passing, along the route in which an attribute of the pattern part drawn on the drawing canvas is dragged and dropped onto the drawing canvas, through the attribute display region for displaying the desired attribute; therefore, drawings can be performed by minimal operation.

Drawing tool and drawing method

In a planer type PNPN semiconductor switch having a MOS FET structure, a field plate electrode is embedded in an insulator covering a surface of a semiconductor substrate to overlie an interface between the semiconductor substrate and a P gate region for limiting an extention of a depletion layer from an anode region to a P gate region.

PNPN semiconductor switches

A PNPN semiconductor switch including an N type semiconductor substrate, spaced apart first and second P type diffused regions formed on a surface of an N type substrate, spaced apart first and second N type diffused regions formed in the second P type diffused region, a first gate insulating layer formed on the surface of the second P type diffused region between the first and second N type diffused regions to cover portions thereof, a first gate electrode formed on the first gate insulating layer between the first and second N type diffused regions, a resistance region disposed on the first gate insulating layer, one end of the resistance region on the side opposite to the first gate electrode, a second gate insulating layer overlying the first gate electrode and the resistance region, a semiinsulating layer formed on the surface of the substrate except over the first and second P type diffused regions, an insulating layer overlying the semiinsulating layer, a P gate electrode electrically connected to the second P type diffused region and the second N type diffused region, a second gate electrode formed on the second gate insulating layer at a portion above the first gate electrode, a cathode electrode connected to the first N type diffused region, an anode electrode connected to the first P type diffused region and the second gate electrode and a high resistance region formed immediately beneath the first gate insulating layer and between the first and second N type diffused regions.

PNPN Light sensitive semiconductor switch with phototransistor connected

In an analog electronic watch having a calendar display the power required during change of the calendar display, about 6 hours out of 24, is greater than at other times. In order to effect economy in power consumption, the pulse for driving the watch motor during the time other than the period in which the calendar display is being changed is only sufficient to drive the time indicating means. In case the motor fails to step when such pulse is applied, this is detected by a detecting circuit and a corrective drive pulse is applied to the motor so as to drive it.

Electronic watch

A circuit for preventing a dV/dt erroneous operation of a PNPN semiconductor switch is replaced by a capacitance on the surface of a semiconductor substrate, a high resistance gate electrode. In other words, such a circuit is formed on the surface of the substrate by a slight modification of the basic design without decreasing the chip area and without isolating component elements.

Growing community of inventors

Tokyo, Japan

Jun Ueda