The team at Unified is using Pearl to identify and chart prior art against a patent owned by the Electronics and Telecommunications Research Institute (ETRI). The patent describes image encoding and decoding using unidirectional intra prediction. It divides image blocks into sub-blocks, determines whether they share a prediction mode, and selects their processing order based on that mode. ETRI has sued companies accusing streaming services and the use of H.265 codec to encode/decode user content. For more details, contact info@unifiedpatents.com.