Invention Grant
- Patent Title: Method and apparatus for synthesizing copy protection for reducing/defeating the effectiveness or capability of a circumvention device
- Patent Title (中): 用于合成复制保护以减少/破坏规避装置的有效性或能力的方法和装置
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Application No.: US12322004Application Date: 2009-01-28
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Publication No.: US08280049B2Publication Date: 2012-10-02
- Inventor: Ronald Quan
- Applicant: Ronald Quan
- Applicant Address: US CA Santa Clara
- Assignee: Rovi Solutions Corporation
- Current Assignee: Rovi Solutions Corporation
- Current Assignee Address: US CA Santa Clara
- Agent George B. Almeida
- Main IPC: H04N7/167
- IPC: H04N7/167 ; H04N9/80

Abstract:
A new copy protection signal includes resistance to certain circumvention devices and includes improved playability. The new copy protection signal causes the certain circumvention devices to pass substantially the copy protection effects to a video recorder or to allow for content control effectiveness on a compliant device. The new copy protection signal also causes the circumvention device to add or enhance copy protection effectiveness, which is contrary to the circumvention device's original intent of removing or reducing copy protection effectiveness. The new copy protection signal is provided by inserting or adding one or more pseudo sync pulses or one or more pseudo sync/AGC pulse pairs immediately after, or one line after, a vertical sync signal in at least one television line.
Public/Granted literature
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