Invention Grant
US07693330B2 Anti-piracy image display methods and systems with sub-frame intensity compensation 失效
防盗图像显示方法和系统具有子帧强度补偿

  • Patent Title: Anti-piracy image display methods and systems with sub-frame intensity compensation
  • Patent Title (中): 防盗图像显示方法和系统具有子帧强度补偿
  • Application No.: US11248420
    Application Date: 2005-10-13
  • Publication No.: US07693330B2
    Publication Date: 2010-04-06
  • Inventor: Vincent So
  • Applicant: Vincent So
  • Main IPC: G06K9/00
  • IPC: G06K9/00 G06K9/34 G06K9/76 G06K9/40 H04N7/167
Anti-piracy image display methods and systems with sub-frame intensity compensation
Abstract:
Image display methods and systems are provided wherein only portions of a still image of a motion picture, generated for display during an image time interval, are displayed during respective sub-intervals of the image time interval. A still image is thereby separated into portions and displayed separately during corresponding sub-intervals. Preferably, no single portion of the image includes all of the content of the entire image. However, the sum of all of the portions preferably includes all of the content of the image, and all of the portions are displayed within the image time interval. Although an image displayed in this manner can be correctly perceived by a viewer, recording of such an image may capture fewer than all of the portions of the image to thereby degrade the quality of recorded copies of the image and thus the motion picture. Intensity compensation is performed such that a consistent brightness is perceived by a user notwithstanding the fact that some portions are displayed for less time.
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