Patent ID: 6529086
Filing Date: 2003-03-04
Classification: H04N

Abstract:
An encoding/decoding apparatus for an orientation interpolator node data which provides rotational information of an object in a 3-dimensional space, the encoding/decoding apparatus comprising:a differential modulation processing unit for performing differential pulse code modulation (DPCM) by converting key value of data having a key and key values into a quaternion form; a quantizing unit for quantizing the DPCM processed key value data and outputting the quantized key value data; a variable length encoding unit for variable length encoding the quantized differential key value data; an inverse quantizing unit for inverse quantizing the quantized differential key value data and outputting the inverse quantized differential key value data; a quaternion multiplication unit for performing quaternion multiplication of the inverse quantized differential key value data and multiplying the result of a previously decoded key value; a delay unit for delaying the output of the quaternion multiplication unit; and a predicting unit having a prediction order control function which receives the output of the delay predicts an input value to be encoded next, and can adjust the prediction order.