US 5,689,305 A · System for deinterlacing digitally compressed video and method

Abstract

A system for deinterlacing encoded video data includes a demultiplexer for receiving the encoded video data and producing motion information and compressed video data corresponding to the encoded video data. A motion compensated predictor generates predicted image data based on the motion information corresponding to the encoded video data. A variable length decoder decodes the compressed video data corresponding to the encoded video data to produce residual data. An adder combines the residual data and the predicted image data to generate an interlace field and a memory stores picture data corresponding to the interlace field. A controller processes the motion information and generates motion vectors and a control signal corresponding to the motion information. A motion compensated deinterlacer manipulates the picture data corresponding to the interlace fields from the memory according to the motion vectors and the control signal to generate a corresponding deinterlace picture.

Claims53

Dependent claims

A system for deinterlacing encoded video data comprising:

a demultiplexer for receiving the encoded video data and extracting motion information and compressed video data corresponding to the encoded video data, the compressed video data including residual data;
a motion compensated predictor for generating predicted image data based on the motion information corresponding to the encoded video data;
a variable length decoder for decoding the compressed video data corresponding to the encoded video data received through the demultiplexer to produce the residual data;
means for combining the residual data and the predicted image data to generate an interlace field;
a memory for storing picture data corresponding to the interlace field;
a controller for processing the motion information and generating motion vectors and at least one control signal corresponding to the motion information;
and
a motion compensated deinterlacer for manipulating the picture data corresponding to the interlace field received as output from the memory according to the motion vectors and the control signal to generate a corresponding deinterlaced picture;
wherein the controller includes means for scaling the motion vectors, including horizontal and vertical components, by converting the motion vectors from a first frequency to a second frequency.

6 more elements

A system for deinterlacing encoded video data comprising:

a demultiplexer for receiving the encoded video data and extracting motion information and compressed video data corresponding to the encoded video data, the compressed video data including residual data;
a motion compensated predictor for generating predicted image data based on the motion information corresponding to the encoded video data;
a variable length decoder for decoding the compressed video data corresponding to the encoded video data received through the demultiplexer to produce the residual data;
means for combining the residual data and the predicted image data to generate an interlace field;
a memory for storing picture data corresponding to the interlace field;
a controller for processing the motion information and generating motion vectors and at least one control signal corresponding to the motion information;
and
a motion compensated deinterlacer for manipulating the picture data corresponding to the interlace field received as output from the memory according to the motion vectors and the control signal to generate a corresponding deinterlaced picture;
wherein the motion compensated deinterlacer comprises:
a temporal deinterlacer for receiving the motion vectors and corresponding picture data of a first interlace field and for performing a spatial interpolation process and a block motion process on the interlace field;
a spatial deinterlacer for receiving the picture data of a second interlace field and performing a spatial interpolation process on the interlace field, separately from the temporal deinterlacer;
means for determining whether to add outputs of the temporal and spatial deinterlacers according to the control signal;
an adder for adding the outputs of the temporal and spatial deinterlacers in response to the determining means and generating resultant scan lines;
and
means for outputting the scan lines from the adder.

12 more elements

A method for deinterlacing encoded video data comprising the steps of:

receiving the encoded video data and extracting motion information and compressed video data corresponding to the encoded video data;
predicting image data according to the motion information corresponding to the encoded video data;
decoding the compressed video data corresponding to the encoded video data to produce residual data:
combining the image data and the residual data to generate an interlace field;
storing picture data corresponding to the interlace field;
processing the motion information and generating motion vectors and at least one control signal corresponding to the motion information;
and
manipulating the picture data corresponding to the interlace field from the memory according to the motion vectors and the control signal to generate a corresponding deinterlaced picture;
wherein the processing step scales the motion vectors, including horizontal and vertical components, by converting the motion vectors from a first frequency to a second frequency.