Mitsubishi Heavy Industries Limited

Katsuhiko Toda

Hideaki Emoto

Isao Sagawa

Atsushi Kawachi

Ikuyo Abe

An object is to provide a light-source lamp capable of reducing consumption power while ensuring a certain luminance level and a projector using the light-source lamp. This light-source lampgathers light from a light source at a lens for emission. The light sourcesare formed of a plurality of arranged light-emitting diodes, and the light sourcesare driven with pulse-width modulation control of the light-emitting diodes. With this, compared with a configuration in which the light sourcesare subjected to analog control, consumption power of the lamp can be reduced while ensuring a certain luminance level lm.

Light-source lamp and projector

The objective of this invention is to provide an automatic reverse method for reversing and displaying the black-white image into the white-black image under the predetermined condition, and a printer unit using the same method, specially a printer unit used in a plant operation. According to this invention, it would allow the printing operation to be accomplished merely by actuating a print button on operation device The judgment of whether to reverse the black-and-white components, which was the responsibility of the operator in the prior art design, would be made automatically, and the human errors would be eliminated. The proportion of the black monochrome portion among the received black-and-white entire monochrome image. It displays either the received black-and-white monochrome image without any reversal if the proportion does not exceed a given value, or the reversed white-and-black monochrome image if the proportion exceeds the given value.

Growing community of inventors

Hyogo, Japan

Katsuhiko Toda