Hitachi, Ltd.

Futaba Denshi Kogyo Kabushiki Kaisha

Futaba Corporation

Hiroshi Sakurada

Yukihiko Shimizu

Naofumi Aoyama

Shigeo Itoh

Kiyoshige Kinugawa

Hiroaki Kawasaki

Teruo Watanabe

Yoichi Kobori

Koji Onodaka

Hiroshi Yamaguchi

Katsuya Hiraga

Tadashi Iwasa

Yoshihiro Nozaki

Shinichi Narushima

Toshihiko Tojo

An optical printer including a fluorescent light-emitting tube equipped with an anode in a form of dot and a rotatable rotating filter part equipped with filters R, G, B. A film is moved relative to the optical printer set at a given position. A controlling means rotates the rotating filter part, and, in synchronization with that, the fluorescent light-emitting tube is made to emit light by the image signal of every color of red, green and blue. The image can be formed by moving the film one time relative to irradiation with the light in a state of a dot transmitted selectively through each filter of red, green and blue. Since the head is fixed and the film is moved, room for the movement of the head which has been conventionally required is not required. Spatial room for the slide of the filter is not required differently from the slide-switching type-filter of the conventional art.

Optical printer

An optical printer including a fluorescent light-emitting tube equipped with an anode in a form of dot and a rotatable rotating filter part equipped with filters R, G, B. A film is moved relative to the optical printer set at a given position. A controlling device rotates the rotating filter part, and, in synchronization with that, the fluorescent light-emitting tube is made to emit light by the image signal of every color of red, green and blue. The image can be formed by moving the film one time relative to irradiation with the light in a state of a dot transmitted selectively through each filter of red, green and blue. Since the head is fixed and the film is moved, room for the movement of the head which has been conventionally required is not required. Spatial room for the slide of the filter is not required differently from the slide-switching type-filter of the conventional art.

A field emission type display device capable of providing display with gradation and permitting the whole display device to be integrated with a display drive circuit section. Memory sections are arranged in correspondence to image cell sections, resulting in static display being accomplished. Also, Light emission of an anode is carried out depending on data held in the memory section, so that a luminous period is increased and adequate luminance is provided at a drive voltage substantially lower than that required for dynamic display. An FEC element is incorporated in each of the memory sections in correspondence to incorporation of an FEC element in each of the image cell sections, so that the image cell sections and memory sections may be concurrently manufactured during manufacturing of the FEC elements, to thereby significantly simplify manufacturing of display device.

Field emission type display device

A double-faced vacuum fluorescent display of the invention is formed of an outer casing, and first and second display portions. The outer casing includes a base plate, a transparent front plate situated in front of the base plate, and a side member situated between the base plate and the front plate to form a space therebetween. The first display portion is mounted on the base plate, and includes a wiring pattern, an insulating layer with light shielding property, a first anode conductor and a first fluorescent layer. A display on the first display portion can be observed only from the front plate side. The second display portion is mounted on the transparent front plate, and includes a second anode conductor with transparency and a second fluorescent layer. The second display portion has a light transmitting portion for observing the first display portion therethrough. Light by the first fluorescent layer is observed from the light transmitting portion through the transparent front plate, and light by the second fluorescent layer is seen through the transparent front plate and the second anode conductor.

Double-faced vacuum fluorescent display

A method is disclosed for driving a liquid crystal display provided, in the same liquid crystal panel, with a dot matrix display part and a fixed pattern or segment display part. The dot matrix display part is driven in a time-multiplexed fashion, while the fixed pattern or segment display part is driven in a static fashion using driving voltage waveforms in common with the dot matrix display part.

Method for driving and liquid crystal display device including dot

A liquid crystal display character generator circuit comprises a first RAM for temporarily storing information to be displayed on a liquid crystal display unit, a ROM for storing standard character patterns corresponding to the information to be displayed, a second RAM operable to store special character patterns corresponding to the information to be displayed, and a data selector for enabling the designation of an address in one of the ROM and the second RAM in accordance with the information stored in the first RAM.

Memory circuit for generating liquid crystal display characters

A power supply circuit for a high voltage driven device, particularly a magnetron, is described. The power supply circuit comprises first and second switching elements, an inverter circuit including a commutating reactor connected in series with the first and second switching elements and a capacitor connected to a center tap of the commutating reactor, a transformer connected to an output of the inverter circuit, and a third switching element connected in parallel with a series circuit comprising the capacitor, the primary winding of the transformer and a portion of the commutating reactor. When the magnitude of a current flowing in the transformer exceeds a predetermined level, the third switching element is fired to establish a discharge loop for the capacitor through the series circuit whereby the amplitude of the current supplied to the transformer is limited below the predetermined level.

Growing community of inventors

Mobara, Japan

Hiroshi Sakurada