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US 8,134,640 B2Granted
Video processor architecture and method for frame rate conversion
AssigneeBroadcom Corporation
InventorDaniel Doswald
Life of this patent
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Abstract
A video processor, upstream of a frame rate converter determines video attribute data. This attribute data is formatted and passed along a channel to the frame rate converter. The frame rate converter extracts the attribute data from the channel for use in frame rate conversion. The frame rate converter may thus rely on attribute data obtained by the video processor, and need not re-analyze video frames.
Claims21
A method of forming frame rate converted video comprising:
- a. processing received video to form data representing frames of video;
- b. obtaining attribute data from said received video;
- c. passing said data representing frames of video to a frame rate converter;
- d. passing said attribute data in an auxiliary channel to a frame rate converter;
- e. receiving said data representing frames of video;
- f. receiving said attribute data on said auxiliary channel;
- g. determining said attribute data does not include cadence information about said received video, and in response thereto further comprises determining said cadence information from frames buffered at said frame converter;
- h. forming frame rate converted video from said data representing frames of said video, based on said attribute data, wherein forming frame rate converted video data comprises interpolating frames.
5 more elements
A video receiver comprising:
- a. a video processor comprising a de-interlacer for deinterlacing received fields of video to form frames of video for provision to a frame rate converter, said de-interlacer operable to detect a cadence of said received fields of video, wherein said video processor further comprises at least one of a noise reduction block, a color converter, and a scaler;
- b. an attribute formatter in communication with said video processor for receiving an indication of said cadence and forming attribute data therefrom, wherein said attribute data further comprises at least one of information reflecting frequency content of said frames, and information reflecting color content of said frames of video;
- c. a channel encoder for encoding said attribute data on a channel to said frame rate converter;
- and
- wherein said frame rate converter comprises an interpolator for interpolating frames.
2 more elements
A method of forming frame rate converted video comprising:
- a. receiving data representing frames of video at a frame rate converter;
- b. receiving at said frame rate converter, attribute data associated with said data representing frames on an auxiliary channel;
- c. forming frame rate converted video from said received data, based on said attribute data, wherein forming frame rate converted video further comprises interpolating frames, wherein said attribute data comprises cadence information about said frames of video, and wherein said cadence information is used to adjust fractional motion from interpolated frame to interpolated frame, formed by an interpolator.
A frame rate converter comprising:
- a. a channel decoder for decoding attribute information about frames of video provided to said frame rate converter;
- b. an interpolator for forming frame rate converted video from data representing said frames of video, based on said attribute information, wherein the interpolator interpolates frames;
- and
- c. a cadence detector for determining cadence information from said sequential ones of said received frames, if said attribute information does not include said cadence information the frame rate converter further comprising a buffer fir storing sequential ones of said frames of video.
1 more element
Dependencies are inferred from the claim text.