Small area searching method, communication synchronous device, portable terminal device and record media

Application Number: 00106966
Application Date: 2000.04.26
Publication Number: 1272008
Publication Date: 2000.11.01
Priority Information: 1999/4/28 JP 121782/1999; 1999/6/30 JP 185714/1999; 1999/12/28 JP 373252/1999
International: H04J13/00
Applicant(s) Name: Fujitsu Ltd.
Address:
Inventor(s) Name: Kuroiwa Koichi;Kanesugi Masaki;Hikita Saneo
Patent Agency Code: 11038
Patent Agent: fu jianjun
Abstract A power threshold value ( 12 ) is set to be compared with a correlation power value detected by a correlator ( 2 ) and a power conversion section ( 4 ). As a result of comparison by a comparator ( 13 ), only the correlation power values that exceed the threshold value ( 12 ) are stored in a power value memory ( 14 ), and unnecessary correlation values at noise levels are not stored in the memory ( 14 ) so that the number of power values stored can be decreased. With this construction, the necessary memory capacity can be decreased, and the process of searching for the maximum value from the correlation power values stored in the memory ( 14 ) can be performed at a higher speed.