Avix Inc.

Other

Masatoshi Ohishi

Toyotaro Tokimoto

Fumio Imai

A display screen comprises many pixel lamps arrayed uniformly and in a regular pattern. Pixel lamps come in three types (first- to third-color lamps), and image data to be displayed on the screen consist of bit-map type multi-colored data in which one pixel is represented by a set of three-type color data (first- to third-color data). Each color data plane on a bit-map image data plane is divided into many groups each consisting of a plurality of contiguous pixels, each group is correlated to each first color lamp on the display screen, an operation of selecting in a preset sequence first-color data of a plurality of pixels belonging to one group is repeated, and a first-color lamp correlating to each group is emission-driven according to a selected first-color data. (The same steps are followed for second- and third-color lamps).

Method and apparatus for displaying bitmap multi-color image data on dot matrix-type display screen on which three primary color lamps are dispersedly arrayed

Method and device for displaying bit-map multi-colored image data on dot matrix type display screen on which three-primary-color lamps are dispersedly arrayed

A system has a screen module for displaying multicolor images on a screen having orderly-arrayed first, second, and third color LEDs, and a data-sending module sending control signals and image data to be displayed. The screen module has first, second, and third color gradation-control circuits for each pixel. The data-sending module comprises: a frame memory for temporarily storing image data; an image-data transfer controller for reading out image data from the memory and outputting it with a data-transfer clock; first, second, and third color pulse-train generators for generating high-speed pulse trains to be given to each gradation-control circuit; and a pulse-train outputting means for outputting the pulse trains for each color. Each pulse-train generator generates, with a constant period, pulse trains of 2 pieces or a number closely therebelow, pulse intervals varying with time according to a preset characteristic.

Fullcolor LED display system

An object of the invention is to provide a LED lighting equipment which can be simply perform lighting control of the light by any body and can obtain wide variety of tones in wide range by easy operation. A light control type LED lighting equipment comprises a LED aggregate lamp portion, control input generating means for generating one series of control input signal, control output generating means and individual power control means. A color tone of said LED aggregate lamp portion being varied continuously depending on the value of said control input signal.

Light control type LED lighting equipment

A LED lamp with an integrally build-in a function for preannouncement end of life time in a LED lamp per se and to realize the LED lamp having such function with simple construction and at low cost. The LED lamp system has an alternating current power source connecting portion for receiving an alternating current, a power source converting portion for receiving the alternating current and rectifying the received alternating current for generating a direct current power, LED group consisted of a plurality of LEDs and received a direct current power output from the power source converting portion, the LED group having a life time preannouncement portion for integrating power supply period for issuing preannouncement indicative of approaching to the end of the life. The life time preannouncement portion includes counting means for measuring the power supply period on the basis of a frequency of the alternating power source, integrating means for integrating the power supply period measured by the counting means and storing the integrated value in a non-volatile memory, and power supply mode control means for controlling illumination of LEDs at different modes including a normal lighting modes, the power supply mode control means being responsive to an integrated value of the integrating means in excess of a predetermined criterion to operate in a predetermined life time preannouncement mode.

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Zushi, Japan

Masatoshi Ohishi