초록 ▼

An apparatus for encoding data blocks and methods of operating the same result in an encoder that provides constant data rate outputs. The encoder comprises DCT (discrete cosine transformer) resources having a truncate controller configured to receive a truncate signal to truncate the data blocks to

An apparatus for encoding data blocks and methods of operating the same result in an encoder that provides constant data rate outputs. The encoder comprises DCT (discrete cosine transformer) resources having a truncate controller configured to receive a truncate signal to truncate the data blocks to provide reduced data blocks. Quantizing resources is coupled to the DCT resources to quantize the reduced data blocks to provide quantized data blocks. Inverse quantizing resources is coupled to the quantizing resources to inverse quantize the quantized data blocks to provide inverse quantized data blocks. Frame reconstruction resources is coupled to the inverse quantizing resources to reconstruct previous compressed frames. Motion estimation resources is coupled to the frame reconstruction resources to provide predicted data blocks. Subtraction resources is coupled to the DCT resources and the motion estimation resources to subtract the data blocks and the predicted data blocks. An output data buffer having a data rate controller is coupled to the quantizing resources and the inverse quantizing resources to provide the truncate controller the truncate signal in response to excessive output image rates so that a constant output image rate is maintained.

대표청구항 ▼

[ What is claimed is:] [1.] A video encoder for encoding input images having a plurality of data blocks and providing compressed frames as output image data comprising:DCT (discrete cosine transformer) resources having a truncate controller configured to receive a truncate signal to truncate transfo

[ What is claimed is:] [1.] A video encoder for encoding input images having a plurality of data blocks and providing compressed frames as output image data comprising:DCT (discrete cosine transformer) resources having a truncate controller configured to receive a truncate signal to truncate transformed data blocks to provide reduced data blocks;quantizing resources coupled to the DCT resources to quantize the reduced data blocks to provide quantized data blocks;inverse quantizing resources coupled to the quantizing resources to inverse quantize the quantized data blocks;frame reconstruction resources coupled to the inverse quantizing resources to reconstruct previous compressed frames;motion estimation resources coupled to the frame reconstruction resources to provide predicted data blocks;subtraction resources coupled to an input of the DCT resources and an output of the motion estimation resources to subtract the data blocks and the predicted data blocks; andan output data buffer having a data rate controller coupled between the quantizing resources and the inverse quantizing resources to provide the truncate controller the truncate signal in response to excessive output image data rates so that a constant output image data rate is maintained.