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Compressed digital overlay controller and method for MPEG type video signal    
United States Patent5594507   
Link to this pagehttp://www.wikipatents.com/5594507.html
Inventor(s)Hoarty; W. Leo (Morgan Hill, CA)
AbstractA controller, in accordance with a preferred embodiment provides, in a specified region of first television picture generated by a first digitally compressed video signal, an overlay of a second picture embodied in a second video signal. The controller includes an I-frame buffer for storing updated macroblock pixel data in I-frame format derived from the second signal. The controller also has a matte mask storage register for storing data that identifies the specified region by means of macroblocks. A matte substitution processor is in communication with the matte mask storage register and has as an input the first signal and provides an overlayed output; the controller inhibits transmission to the output of any macroblock, of the first signal's data stream, lying in the specified region. It also functions to substitute for such macroblock a corresponding macroblock from the I-frame buffer. Further embodiments permit overlay of a graphic display for interactive television on a picture derived from a digitally compressed video signal.
   














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Drawing from US Patent 5594507
Compressed digital overlay controller and method for MPEG type video

     signal - US Patent 5594507 Drawing
Compressed digital overlay controller and method for MPEG type video signal
Inventor     Hoarty; W. Leo (Morgan Hill, CA)
Owner/Assignee     ICTV, Inc. (Santa Clara, CA)
Patent assignment
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Publication Date     January 14, 1997
Application Number     08/250,723
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     May 27, 1994
US Classification     348/584 348/598
Int'l Classification     H04N 005/272
Examiner     Kostak; Victor R.
Assistant Examiner     Flynn; Nathan J.
Attorney/Law Firm     Bromberg & Sunstein
Address
Parent Case     This application is a continuation in part of U.S. application Ser. No. 08,056,958, filed May 3, 1993, which in turn is a continuation in part of U.S. application Ser. No. 07/877,325, filed May 1, 1992 issued as U.S. Pat. No. 5,412,325, which in turn is a continuation in part of U.S. application Ser. No. 07/754,932, filed Sep. 10, 1991 issued as U.S. Pat. No. 5,220,420, which is a continuation in part of U.S. application Ser. No. 07/589,205, filed Sep. 27, 1990, issued as U.S. Pat. No. 5,093,718. These related applications are incorporated herein by reference.
Priority Data    
USPTO Field of Search     348/584 348/585 348/586 348/588 348/589 348/598 348/599 348/600
Patent Tags     compressed digital overlay controller mpeg type video signal
   
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 Market Review Submit all comments and votes
   
Market Size
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> $10B
$5B - $10B
$2B - $5B
$500M - $2B
$100M - $500M
$10M - $100M
$1M - $10M
$500K - $1M
$100K - $500K
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$0   $2.5B   $5B   $7.5B   $10B
Market Share
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75% - 100%
50% - 74.99%
25% - 49.99%
10 - 24.99%
5 - 9.99%