Sharp Kabushiki Kaisha Corporation

Tadao Kyomoto

Shigetsugu Okamoto

A gray level shift is detected as to adjacent pixels in the same field as that of an original signal inputted, so that gray level information is obtained. Concurrently with this step, a motion speed of the picture is detected as to each pixel of the original signal, so that motion information is obtained. A correction gray level signal according to the foregoing gray level information and motion information is obtained, and the correction gray level signal is outputted to the original signal. It therefore results in that a motion picture pseudo contour is detected as to two factors of space and time, and hence, not only the magnitude of gray level turbulence but also a range of pixels affected by the gray level turbulence can be accurately detected.

Motion picture pseudo contour correcting method and image display device using the method

An illumination control device for illuminating an light modulation information display device with light includes: at least one illumination device for irradiating light which is generated through discharging; and a driving waveform generation section for controlling the light which is irradiated from the at least one illumination device to the light modulation information display device. The light modulation information display device is operable so as to have a first period and a second period during which an image is displayed. During the first period, the driving waveform generation section applies a first voltage to the at least one illumination device, the first voltage causing the at least one illumination device to be turned entirely-ON. During the second period, the driving waveform generation section applies a second voltage to at least a portion of the at least one illumination device.

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Matsudo, Japan

Tadao Kyomoto