Patent ID: 8237594
Filing Date: 2012-08-07
Classification: H04N

Abstract:
1. An encoding apparatus comprising: a normalization unit that calculates a plurality of normalized values by dividing a plurality of input values in an input signal by either a normalization coefficient that is closest to a maximum value of absolute values of the plurality of input values or a normalization coefficient that is closest to the maximum value from among normalization coefficients that are larger than the maximum value; a quantization unit that generates a plurality of quantized values by quantizing the plurality of normalized values; a code-table storage unit that stores a code table in which the smaller the probability of occurrence of the plurality of quantized values, the longer the code length of a variable-length code allocated to the plurality of quantized values; and a code output unit that outputs, when the plurality of quantized values are all zero, a variable-length code allocated to a combination of a plurality of quantized values, which are different from the plurality of the quantized values, in accordance with the code table.