Image processing device and operating method of the image processing device

An image processing device comprising:

• a multimedia intellectual property (IP) configured to generate second image data by performing image processing on first image data;
• and
• an encoder configured to,
• generate first compressed data by performing quantization on a block of the second image data using a quantization step;
• generate second compressed data by performing at least one of prediction processing or entropy encoding on the first compressed data;
• based on a compression ratio of the second compressed data being equal to or greater than a target compression ratio, transmit the second compressed data and a first header corresponding to the second compressed data, wherein the second compressed data and the first header are stored in a memory;
• based on the compression ratio of the second compressed data being less than the target compression ratio, determine whether a quantization step size is greater than a first quantization step, or lower than or equal to the first quantization step;
• in response to the quantization step size being lower than or equal to the first quantization step, increase the quantization step to obtain an increased quantization step and generate the second compressed data by performing the quantization using the increased quantization step, and the at least one of the prediction processing or the entropy encoding on the block of the second image data;
• in response to the quantization step being greater than the first quantization step, generate third compressed data by performing the quantization on the block of the second image data based on the first quantization step;
• and
• transmit the third compressed data and a second header corresponding to the third compressed data, the third compressed data and the second header corresponding to the third compressed data being stored in the memory, wherein
• the encoder is configured to operate in a quality priority mode and a power priority mode, and
• the first quantization step is set to a first value in the quality priority mode, the first quantization step is set to a second value in the power priority mode, and the first value is smaller than the second value.