Njk 



(i^P.K*q) 



j=0 



CLEAR 

 ACCUMULATOR 



[ZHIK 



p=0 



q = 





^TAR-\ 



n-p 



z 



- Pn^ 



ACCUMULATE 

 PRODUCT 



Aj 



^ iFj*p = n 

 1 



-^— I 



Ak 



I 



>' IF k*q = m 



2 OUT ON TAPE 



1 



\f IF p>T (max lag) 



Ag 



L- , 



IF q>T(mQx lag) 



/STo\ 



k=0 j=0 



Njk Nj.p.k.q 



Fig. 9.1 FLOW CHART FOR UNNORMALJZED COVARIANT 



SURFACE 

 -90- 



