Taiyo Yuden Co., Ltd.

Microspace Corporation

Taiyo Yuden Corp.

Akinobu Maekawa

Masato Tanaka

Yasuo Hosaka

Mamoru Sakamoto

Kazuo Asanuma

Yuichi Masaki

Hidehumi Nakagome

Hidefumi Nakagome

Kazuho Murata

An overflow suppression technique that is effective for avoiding degradation in image quality is provided. A fundamental waveform and detail is extracted out of an input RGB signal. A suppression gain generation unitgenerates a suppression gain from the extracted fundamental waveform. Multipliersandmultiply the detail and the fundamental waveform by the generated suppression gain, respectively. Then, an addercombines them together for a mixed output. Alternatively, equalization processing is performed as follows. A low frequency component fundamental waveform is obtained as a result of the passing of an input RGB signal through a low pass filter. A suppression gain is generated from the low frequency component fundamental waveform. Then, the input itself is multiplied by the suppression gain to obtain an output.

Video display apparatus and method, and signal processing circuit and liquid crystal backlight driver to be built therein

The present invention relates to a lamp lighting technique for lighting multiple lamps safely without luminance irregularities. The present lamp lighting circuit includes multiple closed loops wherein a predetermined number of lamps and the secondary windings of the predetermined number of transformers are connected serially. At least one of the primary windings of the transformers employed for each closed loop is connected to the primary winding of the transformer employed for another closed loop serially. Thus, current of the lamps included in the closed loop is made uniform, and also current is made uniform even between the closed loops by connecting the primary windings of the transformers serially. According to the present invention, with regard to serial connection of the primary windings of the transformers, even if the number of transformers is limited, current uniformity can be propagated to the entirety by subjecting closed loops to catenation consecutively.

Lamp lighting circuit and device, and lamp lighting apparatus and device

A thin film laser emitting device includes a Bragg reflector including a recess and one or more diffraction gratings provided around the recess, a thin film laser layer formed in the recess, for generating lights, the lights being reflected by the diffraction gratings, a pair of electrodes, provided in the recess to have the thin film laser layer therebetween, and a laser emitting means, provided at a portion of the gratings, for emanating the reflected lights.

Thin film laser emitting device and method for the manufacture thereof

Growing community of inventors

Tokyo, Japan

Akinobu Maekawa