Kabushiki Kaisha Toshiba

Sankosha Corporation

Minoru Yoneda

Takashi Koga

Hiroshi Kobata

Akihiko Enomoto

Makoto Ishizaki

Kenji Shimoda

Yoshihisa Sakazaki

Hideo Tsurufusa

Teruo Itami

Hiroki Aizawa

Chikashi Okabayashi

Toshimasa Otsuki

Kazuhiko Yamauchi

Takao Inoh

Junichi Takabe

An image display adjusting device wherein a difference portion obtains a difference between an input signal fpreceding by one frame as an input signal fheld by one frame by a memory portion and a current input signal f, a multiplication portionmultiplies this difference signal (f&#x2212;f) by a highlight coefficient &#x3b1;, and an addition portionadds a multiplication output signal &#x3b1; (f&#x2212;f) thereof as correction data to the current input signal fto obtain an output signal having its responsiveness improved, the device provided with highlight coefficient controlling portions for performing predetermined decoding by inputting the input signal for the difference signal (f&#x2212;f) and converting it to a signal having a change characteristic different from that signal and outputting a highlight coefficient &#x3b1; adapted to the input signal or the difference signal by using that decode value.

Image display adjusting device

The present invention relates to a grounding device in which a grounding member E having a grounding conductorand a conductive laminated portioncovering the grounding conductoris integrated with a foundation member B of a building so that the grounding member E and the foundation member B overlap partly or entirely. The grounding device is configured so that the grounding member having the grounding conductor and the conductive laminated portion covering the grounding conductor is integrated with the foundation member of the building are so that the grounding member and the foundation member overlap partly or entirely. This makes it possible to easily offer a small grounding resistance. Further, the foundation member of the building contacts the earth over a large area. This enables a small grounding resistance to be stably offered for a long period.

Grounding device and method of constructing the same

A grounding conductoris composed of a conductive metal portionand a conductive casing portionthat covers the conductive metal portion. The conductive casing portionhas a specific resistance of 0.01 to 0. (&#x3a9;&#xb7;m). Since the grounding conductoris composed of the conductive metal portionand the conductive casing portionthat covers the conductive metal portion, the conductive metal portionis connected to the earth via the conductive casing portion. The conductive metal portiondoes not contact directly with the earth but is electrically connected to the earth via the conductive casing portion This prevents the conductive metal portionfrom being corroded. It is also possible to avoid a disconnection in the conductive metal portion

Grounding conductor

A decoder in the form of a Euclid's algorithm operation circuit in which division polyonomials are repeatedly divided by residues resulting from the division process of dividend polynomials and division polynomials until the degree of residues of the division process satisfies a prescribed condition. The Euclid's algorithm operation circuit comprises register groups for storing dividend polynomials and division polynomials, respectively, a feedback loop for storing residues resulting from the division process of the dividend polynomials by the division polynomials, a shifter for shifting contents of registers, and an exchanger for exchanging coefficients of the dividend polynomials with coefficients of the division polynomials. The decoder comprises a syndrome operator for calculating syndromes from received code-words, an erasure locator generator for generating erasure locator data from erasure locator flags synchronous with received code-words, a modified syndrome generator for generating modified syndromes, an erasure locator polynomial generator for generating erasure locator polynomials from the erasure locator data, a Euclid's algorithm operation circuit for obtaining error locator polynomials and error value polynomials, a Chien searcher for obtaining error locations and error values and a correction processor for correcting errors of the received code-word. The modified syndrome generator and the erasure locator polynomial generator are used jointly with the Euclid's algorithm operation circuit.

Decoder for decoding ECC using Euclid's algorithm

A video data recording/reproducing apparatus is designed to effect the high density recording for low bit rate coded data, correct the error with high reliability and reproduce only the main signal. For this purpose, an error correction circuit corrects the error in a transmission path by use of a parity code added by a parity adding circuit on the transmission side. A switch selects one of outputs of the parity adding circuit and error correction circuit according to whether the parity code is contained in the transmission data or not. A recording/reproducing circuit causes an output of the switch to be recorded. At the time of reproducing operation, the error correction circuit corrects the error in the recording/reproducing operation by use of the parity code contained in the reproduced signal.

Video data recording/reproducing apparatus with efficient error

A phase detection circuit for detecting the phase shift of an input signal. An A/D converter converts the input signal into first, second and third digital data according to successive three sampling points. A first subtractor subtracts the third data from the second data to produce a first subtraction signal. A second subtractor subtracts the first data from the second data to produce a second subtraction signal. A third subtractor subtracts the second subtraction signal from the first subtraction signal to produce a signal representing the phase shift. An adder adds the first and second subtraction signals together to produce a signal representing the amplitude of the input signal. A converter converts the signal representing the phase shift into a signal representing the absolute value of the phase shift according to the signals representing the phase shift and the amplitude.

Phase detector circuit for periodic signal using three sampling data

A DC motor is supplied, from a motor driver, with a brake voltage constituted by a forward drive voltage, a reverse drive voltage, and a stop voltage of a zero potential level. An operational current of the motor driver is supplied to a low-pass filter whose output is supplied to first and second sample and hold (S/H) circuits. The first S/H circuit performs its sampling operation after a minute period of time in which the brake voltage goes through a polarity inversion from the reverse drive voltage to the forward drive voltage. The second S/H circuit performs its sampling operation after a minute period of time in which the voltage applied is changed from the forward drive voltage to the reverse drive voltage. The outputs or sampled values of both S/H circuits are compared with each other by a comparator. When the sampled values equal each other, i.e., when the number of rotations of the motor becomes zero, the comparator outputs a coincidence pulse. This pulse is supplied to a stop detector. When detecting this coincidence pulse a predetermined number of times in a row, the stop detector determines that the number of rotations of the motor has become zero.

DC motor stop detector and DC motor brake apparatus

A circuit for adjusting a picture quality by processing a digital video signal. A digital filter receives the digital video signal and extracts a high-frequency component therefrom. A first waveform-shaping element wave-shapes the high-frequency component to provide a noise cancel signal for canceling the noise. A second waveform-shaping element wave-shapes the high-frequency component to provide a contour compensation signal for compensating a contour of a picture. An adder adds the digital video signal, the noise cancel signal and the contour compensation signal to provide a signal with adjusted picture quality.

Growing community of inventors

Yokohama, Japan

Minoru Yoneda