Hitachi Consumer Electronics Co., Ltd.

Hitachi Maxell, Limited

Yusuke Mukai

Shinji Onodera

Kenichi Iwahara

Koichi Atsuta

Tatsuya Ishikawa

Satomi Morishita

In a display device provided with a frame memory developing an auxiliary line image as a display image and a means of reading out and displaying the image data developed in the aforementioned frame memory, the aforementioned auxiliary line image is constituted by background pixels and dashed auxiliary lines constituted by pixels which have luminance or color that is different from that of the background color and pixels with have nearly identical luminance or color to that of the background color; and by carrying out the display of the dashes so as to move, at fixed time intervals or arbitrary time intervals, the dash display areas of the aforementioned auxiliary lines on the trajectory of the figure described by the aforementioned auxiliary lines, the system is devised to display the auxiliary lines while controlling that an identical pixel of the display device is not displayed continually.

Display device

In the usage of table projection of a projection type display, depending upon a sitting position of a participant of a conference, the participant views an image projected upon a table as an inversion image turned upside down, resulting in poor visual recognition. In order to improve visual recognition, images are rotated, synthesized and displayed in accordance with the viewing direction of each participant. More specifically, the projection type display is provided with a two-image synthesizing unit for synthesizing two images obtained by processing an input image by two image rotation units for rotating the input image by a first angle and a second angle different from the first angle, into one image on a screen. The projection type display is also provided with an image rotation unit and an image inversion unit for two-image display on a screen.

Projection type table display

Growing community of inventors

Kawasaki, Japan

Yusuke Mukai