Processing apparatuses and controlling methods thereof

A processing apparatus comprising:

• a processor comprising a first memory configured to decode an encoded frame included in encoded video content on a coding unit (CU)-by-CU basis and, generate a decoded frame,
• wherein, when a first CU is decoded based on a first decoding type, the processor is configured to load a first partial region of a reference frame corresponding to first position information of the first CU to the first memory from a second memory and decodes the first CU based on the first partial region of the reference frame loaded from the second memory;
• wherein, when the first CU is decoded based on a second decoding type, the processor is further configured to decode the first CU by using a reference pixel value corresponding to first position information of the first CU from the first memory;
• and
• wherein the processor is further configured to arrange plurality of decoded CUs in a diagonal direction and generates the decoded frame.

A processing apparatus comprising:

• a processor comprising a first memory, the processor configured to:
• divide a frame in video content into a plurality of coding units (CUs), and
• intra-frame encode the plurality of CUs in a diagonal direction to generate an encoded frame;
• wherein, when a first CU is encoded, the processor is further configured to encode the first CU based a first reference pixel value of a first reference pixel above the first CU, a second reference pixel value of a second reference pixel above a second CU, which is right adjacent to the first CU and a pixel value of a pixel within the first CU.