Patent ID: 7031386
Filing Date: 2006-04-18
Classification: H04N

Abstract:
1. An image transmitter for compressing image data and transmitting the image data to a receiver via a transmission path, wherein the image data at least contains i pixel values of pixels arranged in line along a single direction, each pixel value being expressed in n bits, the image transmitter comprising: a blocking section for taking every p pixel values among the i pixel values in the image data to form a data block, and sequentially outputting a plurality of data blocks each including p pixel values; a data compression section for reducing an amount of data from each data block outputted from the blocking section to output a compressed block for each data block, the data compression section compressing each data block based on a level value derived from a differential pulse code modulation result of two adjoining pixel values; and a data sending section for sending each compressed block outputted from the data compression section onto the transmission path, wherein i, n, and p are predetermined natural numbers, and the data compression section deletes a bit, among all bits of a data block, from each data block based on the level value, wherein the data compression section comprises: wherein the DPCM encoding section comprises: wherein the near-instantaneous compression section comprises: