Patent ID: 6289130
Filing Date: 2001-09-11
Classification: H03M

Abstract:
In a data communication device employing a data compression scheme capable of transmitting data in one of a compressed mode and a transparent mode, a method for determining a preferred mode of said compressed mode and said transparent mode for transmitting said data, said method comprising the steps of:a. buffering a present portion of said data for transmitting in a transparent look-ahead buffer in said communication device;b. encoding said present portion of said data for transmitting into corresponding codewords from a present compression dictionary;c. buffering said codeword in a compression look-ahead buffer;d. upon the filling of one of said look-ahead buffers, firstly comparing the relative fullness of each of said look-ahead buffers to determine a fullness ratio;e. secondly comparing said fullness ratio against a preferred mode transition threshold; andf. when said preferred mode transition threshold dictates a mode transition, transitioning from a present mode of one of said compressed mode and said transparent mode to said preferred mode of one of said compressed mode and said transparent mode for transmitting said present portion of said data.