Patent ID: 6075554
Filing Date: 2000-06-13
Classification: H04N

Abstract:
For use in transmitting a still image at a desired quality using a communications channel, a system comprising:a still mode control block configured and arranged to selectively enable a still mode;a first memory configured and arranged to, when the still mode is not enabled, store a series of images in succession, and, when the still mode is enabled, store one of the series of images as the still image to be transmitted;a difference information generator configured and arranged to generate difference information representing a difference between a reconstructed image and the still image;a variable quality encoder configured and arranged to encode the difference information as encoded data representing the difference information at a variable quality and to successively increase the quality until a quality threshold is satisfied;an image reconstructor configured and arranged to construct the reconstructed image as a function of the difference information, the reconstructed image initially comprising a previously-transmitted image; anda second memory configured and arranged to store the reconstructed image.