Title:
METHOD FOR COMPARING FILTER CONDITION AND SYSTEM THEREFOR
Document Type and Number:
Japanese Patent JP3707545
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently perform a comparison determination processing by reducing the number of entries in a condition expression to be evaluated.
SOLUTION: When a division number N is adopted as 64 and the value of an input key is 0×443, a filter condition corresponding to the range of 0×400-0×7ff in a table 121 becomes an object to be compared in condition. Then the start address value (a pointer value) 0×200 of the table 122 is obtained from the table 121 first. The conditions 3-5 are described in the address 0×200 of the table 122 concerning a key kind table 120. The input key value 0×443 is compared with the conditions 3-5 and, then, an ID list corresponding to the filter condition which is satisfied by the input key value 0×443 is obtained among the ID lists 3-5.
Inventors:
Hiroshi Ueno
Application Number:
JP2001332850A
Publication Date:
October 19, 2005
Filing Date:
October 30, 2001
Export Citation:
Assignee:
NEC
International Classes:
H04L45/74; (IPC1-7): H04L12/56
Domestic Patent References:
| JP2001156840A | ||||
| JP2001292163A | ||||
| JP2000196670A |
Attorney, Agent or Firm:
Akio Miyazaki
Shinichi Iwata
Masaaki Ogata
Ishibashi Masayuki
Shinichi Iwata
Masaaki Ogata
Ishibashi Masayuki