Patent ID: 9307244
Filing Date: 2016-04-05
CPC Classification: H03M,H04N

Claim Text:
1. A data storage controlling device, comprising: circuitry configured to acquire frequency components of an image; determine a complexity of the image in accordance with the frequency components to decide a compression condition for lossless compression of the image; perform the lossless compression for reducing a data amount on each process region including a plurality of pixels in the image; determine whether or not said lossless compression is possible in each determination region including a plurality of process regions; and perform storage control in each determination region in such a manner that data after said lossless compression in a certain determination region is stored as compressed data into a storage circuit when said lossless compression in each process region included in the certain determination region is possible, and image data before said lossless compression in a certain determination region is stored into said storage circuit when said lossless compression in each process region included in the certain determination region is impossible; wherein the circuitry is configured to perform the lossless compression based on the compression condition decided in accordance with the complexity by setting at least one of a size of an information amount allotted in the storage circuit to each of the plurality of pixels and a direction in which a difference in pixel value between adjacent ones of the pixels is calculated.