Method and system-on-chip for performing memory access control with limited search range size during video encoding

A system-on-chip (SoC), the SoC being disposed on an electronic device, and comprising:

• at least one processor, arranged to control operations of the electronic device;
• a video processing circuit, coupled to the at least one processor, and arranged to perform video processing for the electronic device;
• and
• at least one memory, coupled to the at least one processor and the video processing circuit, and arranged to store information;
• wherein:
• the video processing circuit is arranged to load partial data of non-encoded video data corresponding to a picture into a search memory of the video processing circuit for performing at least one motion estimation (ME) operation of video encoding, wherein the at least one memory comprises the search memory;
• and
• the video processing circuit is arranged to configure at least one ME search range corresponding to at least one ME region within memory space of the search memory for performing the at least one ME operation, wherein the at least one ME search range comprises the at least one ME region, and the video processing circuit is arranged to perform the at least one ME operation with an extended search range greater than the at least one ME search range in the memory space for enhancing ME performance;
• wherein any ME search range among the at least one ME search range comprises a corresponding ME region among the at least one ME region and multiple horizontal margins and multiple vertical margins of the ME search range with respect to the corresponding ME region, each horizontal margin among the multiple horizontal margins at least reaches twice a horizontal size of the corresponding ME region, and each vertical margin among the multiple vertical margins at least reaches a vertical size of the corresponding ME region.