USOO8848792B2 (12) United States Patent (10) Patent No.: US 8,848,792 B2 MacInnis et al. (45) Date of Patent: *Sep. 30, 2014 (54) VIDEO AND GRAPHICS SYSTEM WITH H04N 2 1/42653 (2013.01); G09G 5/346 VIDEO. SCALING (2013.01); G09G 2.360/02 (2013.01); (75) Inventors: Alexander MacInnis, Los Altos, CA (Continued) (US); Chengfuh Jeffrey Tang, Saratoga, (58) Field of Classification Search CA (US); Xiaodong Xie, San Jose, CA CPC ...... H04N 7/50; H04N 7/462; H04N 7/26244 (US); Vivian Hsiun, Palo Alto, CA (US) USPC ........................................ 375/240.15, 240.25 See application file for complete search history. (73) Assignee: Broadcom Corporation, Irvine, CA (56) References Cited (US) U.S. PATENT DOCUMENTS (*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 4,020,332 A 4, 1977 Crochiere et al. U.S.C. 154(b) by 322 days. 4,367,466 A 1/1983 Takeda et al. This patent is Subject to a terminal dis (Continued) claimer. FOREIGN PATENT DOCUMENTS (21) Appl. No.: 13/195,115 EP O746116 12/1996 EP O752695 1, 1997 Filed: Aug. 1, 2011 (22) (Continued) (65) Prior Publication Data OTHER PUBLICATIONS US 2011 FO28O3O7 A1 Nov. 17, 2011 Plaintiff and Counterdefendant Qualcomm Incorporated's Prelimi Related U.S. Application Data nary Invalidity Contentions for U.S. Patent 6,501,480 and 6,570,579. (Continued) (63) Continuation of application No. 10/843,657, filed on May 11, 2004, now Pat. No. 7.991,049, which is a Primary Examiner — Nhon Diep (Continued) (74) Attorney, Agent, or Firm — Foley & Lardner LLP (57) ABSTRACT (51) Int. C. A video and graphics system has a reduced memory mode in H04N 7/2 (2006.01) which video images are reduced in half in horizontal direction H04N II/02 (2006.01) during decoding. The video and graphics system includes a video decoder for decoding MPEG-2 video data. The video (Continued) images may not be downscaled in the horizontal direction (52) U.S. C. when no bi-directionally predicted pictures are used. The CPC ............ G06T 1/20 (2013.01); H04N 19/00484 video and graphics system may output an HDTV video while (2013.01); G09G 2.360/125 (2013.01); H04N converting the HDTV video and providing as another output 5/04 (2013.01); G09G 5/026 (2013.01); H04N having an SDTV formator another HDTV format. The output 9/45 (2013.01); H04N 2 1/434 (2013.01); H04N having an SDTV format may be recorded using a video cas 19/00757 (2013.01); G06T 9/007 (2013.01); sette recorder (VCR) while the HDTV video is being dis G09G 2340/0407 (2013.01); G09G 2340/02 played. (2013.01); H04N 7/0,135 (2013.01); G09G 5/024 (2013.01); H04N 19/00781 (2013.01); 20 Claims, 70 Drawing Sheets MEMORY spass woso. MEMORY Woo controller 54 DCODER SPLAY ANA WEON ENGINE WiNOW coror ea s SCALER CPU US 8,848,792 B2 Page 2 Related U.S. Application Data (2013.01); H04N 1 1/20 (2013.01); H04N continuation of application No. 09/640.870, filed on 2 I/440263 (2013.01); H04N 1 1/143 (2013.01); Aug. 18, 2000, now Pat. No. 6,768,774, which is a G09G 2360/128 (2013.01); G09G 5/28 continuation-in-part of application No. 09/437,208, (2013.01); H04N 21/42204 (2013.01); H04N 19/00478 (2013.01); G09G 2340/125 filed on Nov. 9, 1999, now Pat. No. 6,570,579. (2013.01); G09G 5/363 (2013.01); H04N (60) Provisional application No. 60/107.875, filed on Nov. 2 I/4438 (2013.01) 9, 1998, provisional application No. 60/170,866, filed USPC - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 375/240.15 on Dec. 14, 1999. (56) References Cited (51) Int. C. H04N II/04 (2006.01) U.S. PATENT DOCUMENTS H04N 9/423 (2014.01) 4.412,294 10, 1983 Watts et al. 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