Television – Format conversion – Changing number of lines for standard conversion
Reexamination Certificate
2007-11-13
2007-11-13
Kostak, Victor R. (Department: 2622)
Television
Format conversion
Changing number of lines for standard conversion
C348S448000, C348S584000
Reexamination Certificate
active
10890259
ABSTRACT:
In a picture signal processing circuit, in the case of converting picture signal data compliant with an analog video standard to a digital video format to obtain progressive data of a digital value, in a line which is included in a picture display period (active period=486 lines) of a digital progressive standard (e.g., the 40th to 525th lines in the second field) and which corresponds to a video display blank period of an analog progressive standard (e.g., the 40th to 42nd lines in the second field), the data is interpolated with data which is the same as the data obtained immediately after the start of a picture display period of the analog progressive standard (data of the 43rd line). Thus, even if there is a difference between a picture display period of the analog progressive standard and a picture display period of the digital progressive standard, the picture signal processing circuit outputs video data compliant with the digital progressive standard which is effective throughout the picture display period.
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Japanese Office Action dated Jul. 31, 2007 (with English Translation).
Kostak Victor R.
McDermott Will & Emery LLP
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