Patent ID: 6784941
Filing Date: 2004-08-31
Classification: H04N

Abstract:
A digital camera with video input, comprising:an image sensor for capturing an external image and converting the captured image into R/G/B image signals; a video signal processing unit for receiving the R/G/B image signals generated by the image sensor, and converting the received signals into pixel data having a first format for output; a TV decoder for converting input external analog video signals into pixel data having a second format; a scaling unit for providing aspect ratio processing and zoom/pan function to pixel data; a TV interface unit to convert pixel data having the second format into pixel data having the first format for being selectively output to the scaling unit directly and output to the scaling unit after transferring to the video signal processing unit for performing edge enhancement, wherein the TV interface unit further has: a first delay element for selectively delaying input pixel data with a time period of PIXCLKÃ—2, where pixel is generated in a speed of PIXCLKÃ—2 and PIXCLK represents pixel clock; a first multiplexer to select one of the input pixel data and the pixel data delayed by the first delay element for output; a first demultiplexer controlled by PIXCLK signal on a control line for partitioning the pixel data from the first multiplexer into Y data and U/V data; a second delay element for optionally delaying the U/V data with a time period of PIXCLK; a second multiplexer to select one of the U/V data from the first demultiplexer and the U/V data delayed by the second delay element for output; a second demultiplexer controlled by PIXCLK/2 signal on a control line for partitioning the U/V data from the second multiplexer into U data and V data; and a third delay element to delay the Y data from the first demultiplexer for output so as to compensate a time for processing the U/V data; a compressing and storage unit for performing compress operation to the pixel data output from the video signal processing unit and the scaling unit; and an USB unit for converting pixel data after being compressed into serial data for output.