A method of converting a series of m-bit information words into a modulation signal, a method of manufacturing a recording carrier, an encoding device, a recording device, a signal, and a recording carrier modulated signal, method of producing a record carrier, coding device, device, recording, signal, as well as a record carrier)

摘要

A method for converting a series of m-bit information words into a modulated signal is described. An n-bit code word is transmitted for each information word from the column. The transmitted code word is converted into a modulated signal. The code words are distributed over at least one first type group (G11, G12) and at least one second type group (G2). For transmission of each code word belonging to the first type group (G11, G12), the associated group forms the first type coding state (S1, S4). When each of the code words belonging to the second type group G2 is transmitted, the encoding states S2 and S3 of the second type are determined by the information words belonging to the transmitted code word. When one of the codewords is assigned to the received information word, this codeword is selected from the set of codewords V1, V2, V3, V4 that are appended to the coded state (S1, S2, S3, S4). The code word sets V2 and V3 belonging to the second-type encoding states S2 and S3 are separated. The DC and LF parameters of the modulated signal are improved when assigning a codeword from another set of states of type 1 in a coded state of type 1 (S1 and S4) without violating the dk-constraint. If one of the sets of type 1 is selected in the code word, the best instantaneous DC value is given. Further, a recording carrier, a signal, an encoding and a recording apparatus are described.