ENERGY LOSSLESS CODING METHOD AND DEVICE, SIGNAL CODING METHOD AND DEVICE, ENERGY LOSSLESS DECODING METHOD AND DEVICE, AND SIGNAL DECODING METHOD AND DEVICE

摘要

A lossless coding method may include the steps of: selecting one of a first coding scheme and a second coding scheme on the basis of a range in which an energy quantization index is represented; and coding the quantization index by using the selected coding scheme. A lossless decoding method may include the steps of: determining the coding scheme of the differential quantization index of energy included in a bit stream; and decoding the differential quantization index by using one of a first decoding scheme and a second decoding scheme based on a range in which an energy quantization index is represented, according to the determined coding scheme.