초록 ▼

A digital motion video processing circuit can capture, playback and manipulate digital motion video information using the system memory of a computer as a data buffer for holding compressed video data from the circuit. The system memory may be accessed by the circuit over a standard bus. A controlle

A digital motion video processing circuit can capture, playback and manipulate digital motion video information using the system memory of a computer as a data buffer for holding compressed video data from the circuit. The system memory may be accessed by the circuit over a standard bus. A controller in the circuit directs data flow between an input/output port which transfer a stream of pixel data and to the standard bus. The controller directs data to and from either the standard bus or the input/output port through processing circuitry for compression, decompression, scaling and buffering. The standard bus may be a peripheral component interconnect (PCI) bus. The motion video processing circuit has a data path including pixel data and timing data indicative of a size of an image defined by the pixel data. The timing data is used and/or generated by each component which processes the pixel data, thereby enabling each component to process the pixel data without prior knowledge of the image format. By having processors for handling two compression formats for motion video data connected to this data path, conversion between compression formats, such as between MPEG to Motion JPEG, can be performed.

대표청구항 ▼

[ What is claimed is:] [1.] A method of processing video data on a video processing system having at least a first video processing component connected to a second video component, the video data defining a temporal sequence of digital images representing motion video, the method comprising:receivin

[ What is claimed is:] [1.] A method of processing video data on a video processing system having at least a first video processing component connected to a second video component, the video data defining a temporal sequence of digital images representing motion video, the method comprising:receiving, at the first video processing component, first pixel data defining a first digital image of the temporal sequence, and first format data indicative of at least a first size of the first digital image;processing, in the first video processing component, the first pixel data in accordance with the first format data to produce second pixel data defining the first digital image, the processing of the first pixel data changing the first size of the first digital image to a second size;generating, in the first video processing component, second format data indicative of at least the second size of the digital images;sending the second pixel data and the second format data to the second video processing component; andprocessing, in the second video processing component, the second pixel data in accordance with the second format data to produce third pixel data defining the first digital image.