公开(公告)号：US06618232B2

公开(公告)日：2003-09-09

申请号：US09836417

申请日：2001-04-18

申请人： Min-Huang Huang ,  Her-Lin Chang

发明人： Min-Huang Huang ,  Her-Lin Chang

IPC分类号： H02H300

CPC分类号： H02J13/002 ,  Y02E60/7815 ,  Y04S40/121

摘要： A power lock device for safe power output/input is a control lock composed of coding devices, decoding devices and electromagnetic switches. The coded signal will attach to the power transmitting line and keeps on transmitting. After discerning that the coded signal is correct, the decoding device turns on electromagnetic switches and conducts power to transmit. If the code is not correct, the decoding device uses the electromagnetic switches to cut off power and achieves the function of power control.

公开(公告)号：US06567769B2

公开(公告)日：2003-05-20

申请号：US09840158

申请日：2001-04-24

申请人： Her-Lin Chang

发明人： Her-Lin Chang

IPC分类号： G06F1100

CPC分类号： G08B13/22 ,  G06Q20/105

摘要： This unattendant data center environment protection, control and management system is able to provide means for monitoring temperature and humidity, managing power supply, and controlling access condition for a protected zone, and further, able to achieve the aim of remote control and management effect in any situation and from any distance by means of phone communication, interconnection to local network, or the internet web.