The Research On The Improvement Of DRM Keys Programming Quality Base On Six Sigma Management

Scrambling program is one of popular TV digital contents due to some attractive features like live and high definition,the existence of DRM keys in TV terminal is a prerequisite condition for the legitimate reception of scrambling program.How to assure the programming quality of DRM keys is a key product quality concern for every TV manufacturer.The purpose of this paper is to study the programming quality improvement solution of DRM keys during TV manufacturing through scientific six sigma management methods.This paper makes a comprehensive introduces and analysis of programming quality issue of DRM keys from generation to final inspection.There have various of analytical tools are used for root cause research of poor programming quality of DRM keys,such as:Fishbone diagram,Gantt chart,FEMA and so on,and finally we achieve the purpose of DRM keys programming quality improvement,cost reduction and production efficiency improvement after correct solution introduces.The programming defect rate of DRM keys drop from 703 DPPM to less than 50 DPPM after improve actions introduce,what definitely reduces the frequency of rework and production plan adjustment what before often happens,the improved programming quality of DRM keys also are fully accepted by customers and win their satisfaction.