Patent ID: 9137541
Filing Date: 2015-09-15
Classification: H04N

Abstract:
1. A method of providing data to a video decoder, said method comprising: determining, by a memory access unit, whether a target address is within a plurality of memory address ranges, the target address comprising an address word and representing an address of a first memory at which a data word requested by a video decoder is stored; identifying a particular one of a plurality of indicators stored in a second memory using a plurality of bits from the address word of the target address, based on a determination that the target address is within a first memory address range of the plurality of memory address ranges, the particular one of a plurality of indicators indicating whether the requested data word is stored at a cache address in a cache memory of the video cache; and retrieving the particular one of a plurality of indicators from the second memory based on the determination that the target address is within the first memory address range of the plurality of memory address ranges, wherein the memory access unit is configured to: provide the data word at the cache address to the video decoder when the particular one of the plurality of indicators indicates that the requested data word is stored in the cache memory; and provide the requested data word from the first memory, when the target address is not within the plurality of memory ranges or when the particular one of the indicators indicates that the requested data word is not stored in the cache memory of the video cache.