Automatic temperature and humidity regulation – Distance-adjusted
Reexamination Certificate
2005-02-15
2005-02-15
Norman, Marc (Department: 3744)
Automatic temperature and humidity regulation
Distance-adjusted
C062S126000, C340S870170, C379S102050, C455S419000
Reexamination Certificate
active
06854660
ABSTRACT:
An air conditioner control system and method uses a PSTN (Public Switched Telephone Network). The system allows a remote control operator to control a plurality of air conditioners through the PSTN by providing receiving modules connected to the air conditioners which have unique IDs assigned thereto and which all use same telephone line. In an electronic device, a control program is driven to control and monitor the air conditioners. A transmitting module connected to the electronic device converts and codes a control command signal into a DTMF (Dual Tone Multi-Frequency) signal, and transmits the DTMF signal through the PSTN to a receiving module connected to a corresponding air conditioner, so that the air conditioner can be remotely controlled.
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Jeon Duck Gu
Jung Jae Sik
Kwon Jae Hwan
Yoon Sang Chul
Greenblum & Bernstein P.L.C.
LG Electronics Inc.
Norman Marc
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