ENCODING DEVICE, DECODING DEVICE, AMPLITUDE ADJUSTING DEVICE, RECORDED INFORMATION READING DEVICE, SIGNAL PROCESSING DEVICE, AND STORAGE SYSTEM

摘要

Generally intended is to improve DC-free characteristics, while satisfying a run-length limit, in a smaller circuit scale. An RLL/DC free encoding unit (303) includes a first RLL encoding unit (60), a first signal processing unit (62), a second RLL encoding unit (64) and a DC component eliminating encoding unit (66). The first RLL encoding unit (60) subjects a digital signal series outputted from a scrambler (302), to a run-length limiting encoding, thereby to generate a first encoded series. The first signal processing unit (62) executes a predetermined signal processing on the digital signal series without changing the number of bits contained in the digital signal series outputted from the scrambler (302). The second RLL encoding unit (64) subjects the digital signal series, which was subjected to the predetermined signal processing by the signal processing unit and outputted from the first signal processing unit (62), is subjected to the run-length limiting encoding, thereby to generate a second encoded series.