Nec Display Solutions, Ltd.

Nec Corporation

Koichi Ara

Michio Tomizawa

Daisuke Moriwaki

An image display system includes: a display device; a detecting device for detecting a position pointed by an input device, on a display screen of the display device; and a display control device that, in accordance with a drawing on the display screen using the input device, causes the display device to display an image corresponding to the drawing in conformity with a setting corresponding to the position on the display screen at which the drawing has been started. The settings are different from each other depending on the areas on the display screen defined by multiple reference points provided thereon.

Image display system, image control device, display device and display control method

An apparatus includes a lamp a power supply for supplying power to lamp, an image processing unit for displaying an image according to any one of a plurality of video signals applied externally, and a control unit for causing the power supply to start supplying power to the lamp when at least one of the plurality of video signals is applied in an initial state, checking whether or not any one of the plurality of video signals is applied within a predetermined period of time from the time when the applied video signal is stopped, making the power supply continue to supply power to the lamp if at least one of the plurality of video signals is applied, and making the power supply stop supplying power to the lamp if any one of the plurality of video signals has not been applied.

Method for controlling power supply including setting a flag

A convergence adjusting method and a convergence adjusting circuit, for improving the preciseness of adjustment while reducing a time required for the adjustment and for avoiding an occurrence of non-continuity distortion on a display screen. An adjustment state flag memory 8 stores flags indicative of whether or not the adjustment in respective adjustment points is completed. The convergence adjusting method includes sequentially performing convergence adjustment at a plurality of adjusting points set on the display screen equidistantly and setting new adjusting points on the display screen equidistantly with a pitch smaller than a pitch of the adjusting points.

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Tokyo, Japan

Koichi Ara