Material exhibiting apparatus

Details Material exhibiting apparatus Material exhibiting apparatus

1998-10-08

2000-05-23

Dowling, William

Optics: image projectors

Miscellaneous

348370, H04N 104, G03B 2114

Patent

active

060658398

ABSTRACT:
A material exhibiting apparatus displays an image of a material and a character such as an arrow on a display screen in an overlapped state. A location of a display area is set in synchronization with horizontal and vertical synchronizing signals. The set location of the display area is changed by varying a generation timing of either one or both of the horizontal and vertical synchronizing signals. A display location of the character is changed by changing the set location of the display area. Since the display location of the character is quickly changed on the basis of frequencies of the horizontal and vertical synchronizing signals, the movement of the character can continuously be displayed on the display screen.

REFERENCES:
patent: 4690527 (1987-09-01), Ohtorii
patent: 4811110 (1989-03-01), Ohmura et al.
patent: 5430484 (1995-07-01), Nagene et al.
patent: 5444486 (1995-08-01), Mizuno et al.
patent: 5642206 (1997-06-01), Yamamori et al.
patent: 5645335 (1997-07-01), Brunner et al.
patent: 5795048 (1998-08-01), Umei

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