Computer graphics processing and selective visual display system – Plural display systems – Remotely located
Patent
1991-11-05
1994-12-13
Weldon, Ulysses
Computer graphics processing and selective visual display system
Plural display systems
Remotely located
345115, 345185, G09G 302
Patent
active
053733070
ABSTRACT:
An image display device displays an identical image based on display data output from a display control circuit on its own display panel and an external display unit connected to the device through an interface. The device can erase and freeze an image on the external display unit in an erase mode and a freeze mode, respectively, while the display panel displays different images. In order to do so, this device has a frame memory circuit for storing and outputting display data received from the display control circuit toward the external display unit and a disable circuit for stopping data received from the frame memory circuit from being output and instead outputting monochromatic or single-color data to the external display unit. The frame memory circuit inhibits data stored in its memory from being rewritten during the freeze mode. The disable circuit outputs the monochromatic data in the erase mode. During the freeze mode and the erase mode, the display panel can display a freeze sign and an erase sign, respectively, along with an image, by means of a sign pattern generator and a synthesize circuit. The sign pattern generator, the synthesize circuit, the frame memory circuit and the disable circuit are controlled by a control circuit which is also controlled by a CPU.
REFERENCES:
patent: 4677570 (1987-06-01), Taki
patent: 4684935 (1987-08-01), Fujisaku et al.
patent: 4730186 (1988-03-01), Koga et al.
patent: 4760387 (1988-07-01), Ishii et al.
patent: 4777531 (1988-10-01), Hakamada et al.
patent: 4926166 (1990-05-01), Fujisawa et al.
patent: 4974173 (1990-11-01), Stefik et al.
patent: 4980678 (1990-12-01), Zenda
patent: 5150109 (1992-09-01), Berry
Sharp Kabushiki Kaisha
Weldon Ulysses
Wu Xiao M.
LandOfFree
Image display device for displaying an identical image on its di does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image display device for displaying an identical image on its di, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image display device for displaying an identical image on its di will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1196162