H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/34
H04N 7/08 (2006.01) G09G 5/06 (2006.01) G09G 5/39 (2006.01) H04N 7/088 (2006.01)
Patent
CA 1213361
ABSTRACT A TELETEXT DECODER HAVING A REGISTER ARRAY FOR OPERATING ON PIXEL WORDS A telextext decoder extracts digital information from a video signal for displaying graphics and textual information embedded in the video signal. The decoder includes a prefix processor (24) responding to commands supplied to it via a microcomputer 25 in response to a user operated keyboard 26. The commands cause the prefix processor (24) to select and store the data required by the user in a memory (28). The microcomputer (25) reads the data provided by the prefix processor (25) from the memory converts it to pixel words representing picture elements and again stores the pixel words in the memory (28). A display processor (43) accesses the memory (28) and reads more than one pixel word at a time when doing so. It translates each pixel word to a group of Red, Green and Blue (R,G,B) color codes and to a one-bit transparency code (51) coexistent with the group.
468169
Morneau Roland L.
Rca Corporation
LandOfFree
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