Abstract: A video signal of one field is applied to a high frequency component measuring device which measures the high frequency component strength Q of the image of the video signal. The video signal of one field is also applied to a field memory. A look-up table memory carries a plurality of quantization tables each containing parameters. The parameters are aligned in a matrix format in the quantization table. The strength Q is used for selecting one quantization table which is appropriate for reducing the size of coded video signal. A JPEG compression device compresses the video signal from the field memory by DCT operation to produce compressed signal, which is an alignment of a plurality of coefficients aligned in a matrix format. The coefficients are divided by corresponding parameters in the selected quantization table to reduce the size of the compressed signal.

Abstract: A non-linear video editing apparatus having a randomly accessible image data storage unit, a FIFO, a video effects unit, and desired-shots storage unit. The image data from the image data storage unit and data transfer to the FIFO are controlled so that images are not interrupted during an editing operation. The apparatus dispenses with a great number of switches and manage with a FIFO having a small capacity.

Abstract: An image reproducing device comprises an edit information storing unit for storing edit information, an image information storing unit for storing image information which can be accessed randomly, an image reproducing unit for reading image information from the image information storing unit and reproducing it, a reading controlling unit for controlling a faulty area storing unit which stores faulty area information according to edit information from the edit information storing unit, an image displaying unit for displaying image information from the image reproducing unit, a faulty field calculating unit for calculating a faulty field according to faulty area information from the faulty area storing unit, a copy range calculating unit for calculating a copy range according to faulty field information from the faulty field calculating unit, and a copy implementing unit for copying image information to the image storing unit according to copy range information from the copy range calculating unit, and register

Abstract: The present invention provides an inexpensive video editing system capable of combining three or more shots simultaneously, and a time-saving method thereof.