Recently I read " Quality function deployment" written by Mr.Mizuno and Akao, published by Nikkagiren 24 years ago.

There I found following very interesting sentences.

" PDCA cycle is necessary for quality management and the cycle is done by 'quality system'. But it seems that Mr. Feigenbaum, who is famous for TQC, does not include product realization processes in his quality system. The reason, I presume, is that he considers technical matters such as quality control characteristics are not handled in a quality system. But quality control characteristics are vital for quality control and Japan is making unique QC process charts to handle quality matters systematically. There are no such charts in U.S. and Europe. Japan is superior in the point."

In the above sentences the authors indicate the difference between quality system and product realization processes.

In NOTE of 4.1 clause of ISO9001: 2000, it says that processes needed for the quality management system should include processes for management activities, provision of resources, product realization and measurement.

This sentence has not clear difference between quality management system and product realization processes. What is the meaning of " needed for"?

As referred to Introduction of ISO9001: 2000, the quality management system should be complementary to product realization processes or product realization systems. This is the basic relation of the both.