Invention Grant
- Patent Title: Method and apparatus for DC restoration using feedback
- Patent Title (中): 使用反馈进行直流恢复的方法和装置
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Application No.: US13417798Application Date: 2012-03-12
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Publication No.: US08634028B2Publication Date: 2014-01-21
- Inventor: Raymond William Hall , Donald E Parreco
- Applicant: Raymond William Hall , Donald E Parreco
- Applicant Address: US CA Anaheim
- Assignee: RGB Systems, Inc.
- Current Assignee: RGB Systems, Inc.
- Current Assignee Address: US CA Anaheim
- Agency: The Hecker Law Group, PLC
- Main IPC: H04N9/72
- IPC: H04N9/72 ; H04N5/16
Abstract:
A feedback circuit for restoration of DC in electrical signals is presented. A sample pulse representing a DC portion of an electrical signal is generated. The sample pulse triggers a sample and hold circuit to acquire the correct offset voltage in the electrical signal during this DC portion. The offset voltage feeds back through a summing node to the electrical signal thereby restoring the video signal to the desired DC voltage level with respect to ground.
Public/Granted literature
- US20120194746A1 METHOD AND APPARATUS FOR DC RESTORATION USING FEEDBACK Public/Granted day:2012-08-02
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