Method for coding digital signals or alphabets, in particular for transmission via terminal and/or connection lines in telegraphy and data transmission systems and for push-button dialling in switching systems

摘要

Method for coding digital signals or alphabets, in particular for transmission via terminal and/or connection lines in telegraphy and data transmission systems and for push-button dialling in switching systems. For the transmission of digital signals, a method is known in which the coding of these signals is carried out by means of the length of one-stage code elements in conjunction with two or more one-digit, two-digit or multiple-digit characteristic segments. A combination comprising the number of digits of the characteristic segments and their temporal and/or local position is allocated to each character. The object of the present invention is to achieve optimum transmission reliability and transmission quantity in methods of this type. This is achieved by additionally introducing group characteristics which are formed through the disposition of the characteristic segments, of the quantity of the code elements and/or through an additional digit position coding, the characteristic segments being transmitted in an uninterrupted sequence.