On the basis of literature review about strategic network and strategic ecology, this paper analyzes the correlations between strategic network and strategic ecology, and then indicates that the management of strategic network makes one company better compete with its competitors , enhance its market share and obtain the core competence.

This paper analyzes the relationship between the management of strategic network and competition among enterprises,and between enterprise autonomy and the construction of enterprise’s core competence.

Defines the connotation of core competence and key specialty from a systematic point of view.

Patentometic results show that global software patents appear to grow vigorously since 2000;US & Japan are the two countries which accepted most patent applications;most prolific patent institutions are in Japan;but when it comes to core patents in software field,most of them are in the US.

In this paper,a patent analysis method,that is,an extension analysis method and its model,is proposed,which describes the status quo and extension direction of the technology by the classification extension analysis of core patent and by the combination of citation analysis method.

It is resulted from the combination of the core growth and the force directed algorithm,the core growth algorithm is served to install the core cells with some sub-core cells all around to reduce the length of interconnecting wire,the force directed algorithm computes the force among cells to adjust the optimization of placement.