Air conditioner control system using a public switched telephone network and method for operating the same
First Claim
1. An air conditioner control system that uses a PSTN to control a plurality of air conditioners, said control system comprising:
- an electronic device having a control program driven to control the plurality of air conditioners;
a transmitting module that converts and codes an initial control command signal input through the control program into a DTMF signal and transmits the DTMF signal to the PSTN; and
a receiving module that receives the DTMF signal transmitted from the transmitting module over the PSTN and transmits a final control command signal based on the DTMF signal to an air conditioner identified in the DTMF signal.
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Accused Products
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.
16 Citations
19 Claims
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1. An air conditioner control system that uses a PSTN to control a plurality of air conditioners, said control system comprising:
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an electronic device having a control program driven to control the plurality of air conditioners;
a transmitting module that converts and codes an initial control command signal input through the control program into a DTMF signal and transmits the DTMF signal to the PSTN; and
a receiving module that receives the DTMF signal transmitted from the transmitting module over the PSTN and transmits a final control command signal based on the DTMF signal to an air conditioner identified in the DTMF signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An air conditioner control system that uses a PSTN to control a plurality of air conditioners, said control system comprising:
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a telephone that generates and transmits a DTMF signal representing control commands for the air conditioners through manipulation of a plurality of keys; and
a plurality of receiving modules that each receive the DTMF signal from the telephone through the PSTN and transmit a control command signal based on the DTMF signal to an air conditioner identified in the DTMF signal. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of operating an air conditioner control system that uses a PSTN, comprising:
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receiving an initial control command signal including a telephone number associated with at least one air conditioner to be controlled and control command information input through one of an electronic device and a telephone;
converting and coding the initial control command signal into a DTMF signal;
transmitting the DTMF signal to a destination of the telephone number through the PSTN;
receiving the DTMF signal with a receiving module connected to the air conditioner;
converting and decoding the received DTMF signal into a final control command signal;
transmitting the final control command signal to the air conditioner; and
transmitting operating state data of the air conditioner operated according to the final control command signal to one of the electronic device and the telephone through the PSTN. - View Dependent Claims (16, 17, 18, 19)
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Specification