Time base correction for digitized video signal
AssigneeThomson Licensing
InventorsLi Bin Cai, Boon Keng Teng
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Abstract
The present invention relates to a method for time base correction during generation of a digital video signal from an analog input video signal, and to an apparatus having means for digitizing an analog input video signal using such method. According to the invention, the method includes the steps of: receiving an analog video signal; generating a digital video signal from the analog video signal with a video decoder; storing at least a part of the digital video signal in a memory; detecting a portion of corrupt data having an abnormal field ordering in the digital video signal; either discarding the portion of corrupt data or replacing at least a part of the portion of corrupt data with previous data stored in the memory; and outputting the digital video signal.
Claims10
Method for time base correction during generation of a digital video signal from an analog video signal, including the steps of:
- receiving an analog video signal;
- generating a digital video signal from the analog video signal with a video decoder;
- storing at least a part of the digital video signal in a memory;
- detecting a portion of the digital video signal having successive fields with a same parity;
- in case a portion of the digital video signal having the successive fields with the same parity is detected, either discarding the portion of the digital video signal having the successive fields with the same parity or replacing at least a part of the portion of the digital video signal having the successive fields with the same parity with previous data stored in the memory;
- and
- outputting the digital video signal.
Device for time base correction during generation of a digital video signal from an analog video signal, including:
- an input for receiving an analog video signal;
- a video decoder for generating a digital video signal from the analog video signal;
- a memory for storing at least a part of the digital video signal;
- means for detecting a portion of the digital video signal having successive fields with a same parity;
- means for either discarding the portion of the digital video signal having the successive fields with the same parity or replacing at least a part of the portion of the digital video signal having the successive fields with the same parity with previous data stored in the memory responsive to the detection of a portion of the digital video signal having the successive fields with the same parity;
- and
- an output for outputting the digital video signal.
Dependencies are inferred from the claim text.