Kabushiki Kaisha Toshiba

Niles Parts Company, Ltd.

Taketoshi Suzuki

Li Zhang

Tadashi Sakai

Tetsufumi Tanamoto

Shigeki Takahashi

Riichi Katoh

Kazumi Honjo

Taijun Murakami

A random number generation circuit has a ring oscillator which has odd number of inverting amplifiers connected in ring shape, a delay control circuit which generates a predetermined clock signal by delaying a reference clock signal, a first sampling circuit which samples an oscillation signal generated by the ring oscillator with the predetermined clock signal, a first logical equalization circuit which equalizes occurrence frequency of '0' and '1' of a sampling signal sampled by the first sampling circuit, a linear feedback shift register (LFSR) which generates random serial data based on an output signal of the first logical equalization circuit, and a serial-parallel converter which generates random parallel data used for controlling a delay amount of the delay control circuit by converting the random serial data from serial to parallel.

Random number generation circuit

A quantum effect device includes a first layer having a plurality of charge confinement regions, a second layer opposing the first layer and separated from the first layer, the second layer having charges at a high concentration and consisting of a metal layer or a semiconductor layer, and a third layer consisting of an insulating layer or a semiconductor layer having a large band gap between the first layer and the second layer.

Quantum effect device

A semiconductor device includes a porous silicon layer with an impurity concentration of 1.times.10.sup.19 to 1.times.10.sup.21 cm.sup.-3, in which a plurality of pores are formed, and a thermal oxide film 0.01 to 10 .mu.m thick formed on the expanded surfaces of the porous silicon layer, wherein said expanded surfaces include internal surface of said pores.

Porous silicon photo-device capable of photoelectric conversion

A lever switch assembly features an operation lever which has one end disposed in a hollow or cavity defined in a movable switch element and is pivotally supported thereon by two boss-like lugs which project out from opposite sides of the lever. The lugs are received in blind bores formed in springy finger-like projections which form part of the movable switch element. The movable switch element is housed in a case and pivotally supported thereon so as to be rotatable about an axis which is normal to the axis about which the operation lever is pivotal. A pair of electrodes which is disposed on the operation lever is arranged to remain in constant contact with intermediate contacts which are supported on the movable switch element, irrespective of the pivotal movement of the lever. The intermediate contacts maintain a constant electrical connection between the electrodes on the lever and electrodes which are provided on the case. The movable switch element is provided with sliding switch contacts which are arranged to establish connection between pairs of stationary electrodes or contacts which are arcuately arranged on a portion of the case.

Growing community of inventors

Tokyo, Japan

Taketoshi Suzuki