Owner VISTO CORPORATION

Inventors QUINLAN, Sean; MENDEZ, Daniel, J.; JOSHI, Rajiv; ARDULOV, Yuri

Pub. Number AU-A-2002357731

PCT Number PCT/US02/36777

PCT Pub. Number WO2003/044698

Priority 60/336,326 15.11.01 US

Filing date 15 November 2002

Wipo publication date 10 June 2003

G06F 017/30 Digital computing or data processing equipment or methods, specially adapted for specific functions - Information retrieval

G06F 012/00 Accessing, addressing or allocating within memory systems or architectures

G06F 015/16 Digital computers in general - Combinations of two or more digital computers each having at least an arithmetic unit, a programme unit and a register, e.g. for a simultaneous processing of several programmes

H02H 003/05 Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection - with means for increasing reliability, e.g. redundancy arrangements

H03K 019/003 Logic circuits, i.e. having at least two inputs acting on one output - Modifications for increasing the reliability

H04B 001/74 Details of transmission systems, not covered by a single one of groups - for increasing reliability, e.g. using redundant or spare channels or apparatus

H04L 001/22 Arrangements for detecting or preventing errors in the information received - using redundant apparatus to increase reliability

H05K 010/00 Arrangements for improving the operating reliability of electronic equipment, e.g. by providing a similar stand-by unit

H04M 011/02 Telephonic communication systems specially adapted for combination with other electrical systems - with bell or annunciator systems

H04B 007/00 Radio transmission systems, i.e. using radiation field

H04Q 007/28