Patent ID: 6484184
Filing Date: 2002-11-19
Classification: G06F,Y10S

Abstract:
A multilayer polling database network system for collecting information, comprising:a lower polling layer having a plurality of terminal station groups, each group including a plurality (P2) of terminal stations, each terminal station acquiring information, accumulating the information as data, and transmitting the data during a lower-layer polling period (T2); a relay database station layer having a plurality (P1) of relay database stations, each relay station database communicating with a corresponding terminal station group for acquiring information (b1) from the terminal stations, extracting specific information (b2) from the information (b1) acquired from the terminal stations, dividing the information (b1) into n (n=1, 2, 3 . . . ) groups and holding the divided information for a predetermined period of time; and a center station for sequentially polling the relay database stations and acquiring (b2+b1/n)Ã—P2 bytes of information during an upper-layer polling period (T1).