Display system for selectively overlaying symbols and graphics onto a video signal
AssigneeScientific-Atlanta, Inc.
InventorsRobert O. Banker, Cham Ith, Kinney C. Bacon, David B. Burleson
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AssigneeScientific-Atlanta, Inc.
InventorsRobert O. Banker, Cham Ith, Kinney C. Bacon, David B. Burleson
Estimating the term…
A display system for the on screen display of information for a subscriber terminal of a subscription television system includes a display processor which can display information in the form of a display screen stored in a display memory. The display processor can be preprogrammed by the control processor with a plurality of display attributes including different symbol sets, different color palettes, whether the screen is to be a text screen, graphic screen or a combination of a text and graphics system, and the size and location of each screen display on the display area. The display processor includes a digital processor and an analog processor. The digital processor controls accessing the display data from the memory and converting it into timed digital pixels. The analog processor includes a digital to analog pixel converter which produces analog pixels from the digital pixels in a timed relation to an input video signal. The analog processor includes a multiplexer which substitutes the analog pixels for the pixels of the input video signal when display processor is active.
A display system of a subscriber terminal for use in a subscription television system, said subscriber terminal cormected to a television receiver which displays the programming of the subscription television system, said display system comprising:
A display system for generating a first video signal comprising:
A method for use in a display system for generating a first video signal, the display system having a memory with a first graphics screen definition portion for storing graphics data, a second symbol screen definition portion and a third symbol set definition portion, the second and third portions for storing symbol data, said method comprising the steps of:
Dependencies are inferred from the claim text.