Patent ID: 9665540
Date: 2017-05-30
CPC Classifications: G06F,H04N

Claim:
1. A data processing apparatus configured to perform video decoding operations on blocks of video data, the data processing apparatus comprising: a programmable inverse transform unit configured to perform an inverse transform operation on a set of input values in response to a sequence of instructions, said programmable inverse transform unit comprising a first execution path and a second execution path arranged to perform data operations to implement said inverse transform operation, wherein said data operations performed by said first and second execution path are configured in dependence on said sequence of instructions, wherein said programmable inverse transform unit is configured to operate in a first mode in which each instruction in said sequence of instructions is interpreted using a first instruction length and to cause said first execution path and said second execution path to be configured independently of each other, and said programmable inverse transform unit is configured to operate in a second mode in which each instruction in said sequence of instructions is interpreted using a second instruction length, said second instruction length is shorter than said first instruction length, and to cause said second execution path to be configured in dependence on a configuration of said first execution path.