Circuit for processing video signal including information such as caption
AssigneeFujitsu Limited
InventorTetsu Takahashi
Life of this patent
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Abstract
A video signal processing circuit includes a frame memory to receive and store therein at a first rate each frame of a digital video signal in which additional information is assigned separately to each frame, a frame synchronization unit to read each frame of the digital video signal from the frame memory at a second rate, and a processing unit to assign the additional information to the digital video signal read by the frame synchronization unit, without repeating the additional information when the frame synchronization unit reads a same frame of the digital video signal repeatedly, and without skipping the additional information when the frame synchronization unit reads by skipping a frame of the digital video signal.
Claims10
A video signal processing circuit, comprising:
- a frame memory to receive and store therein at a first rate each frame of a digital video signal in which additional information is assigned separately to each frame;
- a frame synchronization unit to read each frame of the digital video signal from said frame memory at a second rate;
- and
- a processing unit to assign the additional information to the digital video signal read by said frame synchronization unit, without repeating the additional information when said frame synchronization unit reads a same frame of the digital video signal repeatedly, and without skipping the additional information when said frame synchronization unit reads by skipping a frame of the digital video signal.
A video signal processing method, comprising the steps of:
- detecting whether a frame of a digital video signal in which additional information is assigned separately to each frame is subjected to repeating or skipping;
- and
- processing the additional information in response to a result of the detecting, without skipping the additional information when said skipping due to skipping a frame of the digital video signal is detected.
Dependencies are inferred from the claim text.