Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1987-09-04
1990-03-06
Chin, Tommy P.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
340734, 340791, H04N 5272
Patent
active
049070860
ABSTRACT:
The overlaying of video image data from an external source, such as a video camera, onto a representation of display data becomes accomplished by using a serial port of an auxiliary frame buffer to receive the serial data from the external source. The source data then becomes transferred from serial registers included within the auxiliary frame buffer into the randomly accessible array of the auxiliary frame buffer. Subsequent execution of a DMA (Direct Memory Access) places the source data overlaid into the image data in the master frame buffer for communication to the video display. Separate designation of the memory address in the auxiliary frame buffer and the main frame buffer allow the overlaying of data from the auxiliary frame buffer into the main frame buffer asynchronously or in a manner not requiring synchronization of the displayed positions relative to one another.
REFERENCES:
patent: 4218710 (1980-08-01), Kashigi
patent: 4360831 (1982-11-01), Kellar
patent: 4568981 (1986-02-01), Beaulier
patent: 4636986 (1987-01-01), Pinkham
patent: 4639890 (1987-01-01), Heilvell
patent: 4680630 (1987-07-01), Field
Chin Tommy P.
Comfort James T.
Holland Robby T.
Sharp Melvin
Texas Instruments Incorporated
LandOfFree
Method and apparatus for overlaying a displayable image with a s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for overlaying a displayable image with a s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for overlaying a displayable image with a s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-52429