Abstract: A pair of adjacent characters in a plain ASCII data stream is examined for a condition that the pair contains a consonant followed by one of a set of characters, or a vowel followed by one of the set of characters. The set of characters is selected only from vowels and the space character. If the condition is satisfied, the pair is encoded as a corresponding extended ASCII code. If the condition is not satisfied, the first character of the pair is emitted as a corresponding plain ASCII code, and a next pair is formed with the second character of the (previous) pair as the first character and a next character of the plain ASCII stream as the second character. The next pair as well as further pairs are examined for the condition and correspondingly processed. Compression of the plain ASCII data stream is thereby achieved.

Abstract: A pair of adjacent characters in a plain ASCII data stream is examined for a condition that the pair contains a consonant followed by one of a set of characters, or a vowel followed by one of the set of characters. The set of characters is selected only from vowels and the space character. If the condition is satisfied, the pair is encoded as a corresponding extended ASCII code. If the condition is not satisfied, the first character of the pair is emitted as a corresponding plain ASCII code, and a next pair is formed with the second character of the (previous) pair as the first character and a next character of the plain ASCII stream as the second character. The next pair as well as further pairs are examined for the condition and correspondingly processed. Compression of the plain ASCII data stream is thereby achieved.

Abstract: An aspect of the present invention provides for lossless compression of an input stream using variable width codes. In an embodiment, in each of a sequence of iterations, an output code is emitted (to an output stream) corresponding to a longest string from a present symbol based on entries in a dictionary. In each iteration, two entries are thereafter added to the dictionary, with the first entry associating (the longest string+symbol succeeding said longest string in said input stream) to a first available code in the dictionary, and a second entry associating a (previous token+symbol succeeding said previous token in said input stream) to a second available code in the dictionary, wherein the previous token represents the token of a first entry in a previous iteration, and wherein ‘+’ represents a text appending operation.