KR20020047625A - the remote control device in used apparatus of house - Google Patents

the remote control device in used apparatus of house Download PDF

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Publication number
KR20020047625A
KR20020047625A KR1020000076115A KR20000076115A KR20020047625A KR 20020047625 A KR20020047625 A KR 20020047625A KR 1020000076115 A KR1020000076115 A KR 1020000076115A KR 20000076115 A KR20000076115 A KR 20000076115A KR 20020047625 A KR20020047625 A KR 20020047625A
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KR
South Korea
Prior art keywords
control
home appliance
signal
home
home appliances
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KR1020000076115A
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Korean (ko)
Inventor
윤상철
전덕구
한경해
Original Assignee
구자홍
엘지전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 구자홍, 엘지전자주식회사 filed Critical 구자홍
Priority to KR1020000076115A priority Critical patent/KR20020047625A/en
Priority to DE2001614350 priority patent/DE60114350T2/en
Priority to EP01118910A priority patent/EP1217475B1/en
Priority to EP05015542.3A priority patent/EP1598714B1/en
Priority to JP2001240289A priority patent/JP2002218566A/en
Priority to CN2003101230040A priority patent/CN1540947B/en
Priority to CNB011238909A priority patent/CN100454855C/en
Priority to US09/941,874 priority patent/US6956461B2/en
Publication of KR20020047625A publication Critical patent/KR20020047625A/en
Priority to US11/085,165 priority patent/US7809786B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803Home automation networks
    • H04L12/2816Controlling appliance services of a home automation network by calling their functionalities
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/10Services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/02Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]

Abstract

PURPOSE: A remote controlling device for the home appliances is provided to enable a user to remotely control the home appliances easily by connecting the home appliance to an Internet network cheaply and simply through a built-in web server. CONSTITUTION: The device comprises the RJ(Registered jack)-45(11) for the Internet connection, a transformer(12) transforming a signal in order to transceive the control signal for the home appliance through the Internet network, the Ethernet controller(13) managing the transmitted control signal by connecting to the transformer, a relay operating the home appliances, and a transistor(17) turning on/off the relay according to the driving information signal. A microcomputer(14) allocates an intrinsic IP to respective appliances, produces a driving information signal in order to control the home appliance according to the control signal received from the Ethernet controller and simultaneously controls the information signal according to the IP from the home appliances. A flash memory(15) stores a home appliances control program processing the control signal at the microcomputer.

Description

가정용기기 원격제어장치{the remote control device in used apparatus of house}The remote control device in used apparatus of house}

본 발명은 가정용기기를 원격으로 제어하는 장치 관한 것으로서, 특히 가정용기기를 인터넷망에서 송수신되는 가정용 제어신호를 처리하여 가정용기기를 제어하는 동시에 가정용기기의 상태를 나타내는 내장형 웹서버를 채용한 가정용기기 원격제어장치에 관한 것이다.The present invention relates to a device for remotely controlling a home appliance. In particular, the home appliance remotely controls a home appliance by processing a home control signal transmitted / received from the Internet network and employs a built-in web server indicating a state of the home appliance. It relates to a control device.

일반적으로 가정용기기는 각 기기의 목적에 맞는 기능만을 수행하도록 설정되고, 각각 다른 가정용기기와는 독립적으로 기능을 수행한다. 하지만 최근에는 사용자가 원격으로 가정용기기들을 제어하기 위한 관련기술에 개발이 지속적으로 이루어지고 있다.In general, home appliances are set to perform only functions that meet the purpose of each appliance, and each performs a function independently of other household appliances. However, in recent years, the development is continuously made in the related technology for the user to control the home appliances remotely.

일반적으로 유/무선 수신에 의하여 기기를 동작시키는 방법이 보편화되었으나, 각각의 가정용기기에 따른 상태를 사용자가 알 수 없고, 단방향으로 동작만을 시킬 뿐이다. 최근에는 인터넷이 급속도로 발전함에 따라 가정용기기를 유/무선통신에 의한 제어와, 인터넷으로 제어할 수 있도록 다방면의 노력이 계속되고 있다.In general, a method of operating a device by wired / wireless reception has become common, but a user cannot know a state according to each household device, and only operates in one direction. Recently, with the rapid development of the Internet, various efforts have been made to control household appliances by wire / wireless communication and to control the Internet.

인터넷은 제한적인 소수층이 군사 및 학술용으로 사용되어 왔으나, 인터넷 관련 기술이 발전되고 인터넷에 접속하는 방법이 용이해짐으로써 인터넷 사용인구도 지속적으로 늘고 있으며, 이에 상응하여 인터넷 관련 기술들도 급속도로 발전하고 있다. 이미 인터넷은 전 세계적으로 사용되고 있으며, 인터넷을 이용한 교육, 경제활동, 정보의 습득 등 다방면으로 활용되고 있다.Although the Internet has been used by a limited minority for military and academic purposes, the number of Internet users is constantly increasing due to the development of Internet-related technologies and the easy way to access the Internet. Doing. The Internet is already used all over the world and is being used for various purposes such as education, economic activities, and information acquisition using the Internet.

이러한 인터넷과 가정용기기들을 연결시키기 위해서는 다양한 장치들이 사용되어 설치비와 유지비가 많이 들어가며, 가정용기기들의 정보를 표시하기 위해서는 전체의 장치들이 모두 동작되어 효율이 떨어지는 문제점이 있다.In order to connect the Internet and home appliances, various devices are used, and installation costs and maintenance costs are high, and in order to display information of home appliances, all devices are operated and efficiency is lowered.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서,그 목적은 일체적으로 결합되어 대형 운영체계의 일부가 되거나, 또는 다양한 하드웨어 장치의 일부로서 포함될 수 있는 내장형 웹서버를 사용하여 가정용기기를 간단하고 저렴하게 인터넷망으로 연결시켜 원격으로 사용자가 손쉽게 가정용기기를 제어할 수 있는 가정용기기 원격제어장치를 제공하는데 있다.The present invention has been made to solve the above problems of the prior art, the object of which is to use a built-in web server that can be integrally combined to be part of a large operating system, or can be included as part of various hardware devices It is to provide a remote control device for home appliances that can be easily and inexpensively connected to the Internet network so that users can easily control the home appliances remotely.

도 1은 본 발명에 따른 가정용기기 원격제어장치의 실시도.1 is an embodiment of a remote control device for home appliances according to the present invention.

<도면의 주요 부분에 관한 부호의 설명><Explanation of symbols on main parts of the drawings>

10 : 가정용기기 11 : RJ-4510: home appliance 11: RJ-45

12 : 트랜스 13 : 이더넷 컨트롤러12: Trans 13: Ethernet Controller

14 : 마이컴 15 : 플래시 메모리14: microcomputer 15: flash memory

16 : 구동용 트랜지스터 17 : 계전기16 driving transistor 17 relay

100 : 내장형 웹서버100: embedded web server

상기한 과제를 해결하기 위한 본 발명에 의한 가정용기기 원격제어장치의 특징에 따르면, 외부통신망을 통해 가정용기기 제어신호가 분리/추출되어 송수신되도록 신호를 변환하는 트랜스와; 상기 트랜스와 연결되어 전송되는 가정용기기 제어신호의 전송을 확인하고 관리하는 신호관리부와; 가정용기기마다 고유 IP를 할당하고 상기 신호관리부를 통해 수신되는 가정용기기 제어신호에 따라 가정용기기를 제어 동작시키도록 구동정보신호를 산출하는 동시에 가정용기기의 IP에 따른 정보신호를 산출하는 제어부와; 상기 제어부에서 가정용기기들의 제어신호를 처리하는 가정용기기 제어 프로그램이 저장되는 메모리부와; 상기 제어부의 구동정보신호에 따라 가정용기기를 동작시키는 구동수단으로 이루어진다.According to a feature of the remote control device for home appliances according to the present invention for solving the above problems, a transformer for converting the signal so that the home appliance control signal is separated / extracted and transmitted and received through an external communication network; A signal manager to check and manage transmission of a control signal of a home appliance connected to the transformer; A control unit for allocating a unique IP for each household device and calculating a drive information signal to control and operate the household device according to the household device control signal received through the signal manager; A memory unit in which the control unit stores a home appliance control program for processing control signals of home appliances; It consists of a driving means for operating the home appliance in accordance with the drive information signal of the control unit.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1 본 발명에 가정용기기 원격제어장치의 실시예를 도시한 회로도로서, 인터넷연결을 위한 RJ-45(registered jack, 11)와, 인터넷통신망을 통해 가정용기기 제어신호가 분리/추출되어 송수신되도록 신호를 변환하는 트랜스(12)와, 상기 트랜스(12)와 연결되어 전송되는 가정용기기 제어신호의 정당성을 관리하는 이더넷 컨트롤러(ethernet controller, 13)와, 가정용기기마다 고유 IP를 할당하고 상기 이더넷 컨트롤러(13) 통해 수신되는 가정용기기 제어신호에 따라 가정용기기를 제어 동작시키도록 구동정보신호를 산출하는 동시에 가정용기기로부터 IP에 따른 정보신호를 제어하는 마이컴(14)과, 상기 마이컴(14)에서 가정용기기들의 제어신호를 처리하는 가정용기기 제어 프로그램이 저장되는 플래시 메모리(15)와; 가정용기기를 동작시키는 계전기(16)와, 상기 계전기(16)를 마이컴(14)의 구동정보신호에 따라 ON/OFF시키는 트랜지스터(17)로 구성된다.1 is a circuit diagram showing an embodiment of a remote control device for a home appliance according to the present invention, the RJ-45 (registered jack, 11) for connecting to the Internet, and the home appliance control signal is separated / extracted and transmitted and received through the Internet communication network A transformer 12 for converting the control unit, an Ethernet controller 13 for managing the legitimacy of the home appliance control signal transmitted and connected to the transformer 12, and assigning a unique IP for each household device, the Ethernet controller ( 13) a microcomputer 14 that calculates a driving information signal to control the home appliance according to the home appliance control signal received through the home appliance, and controls the information signal according to the IP from the household appliance, and the home appliance in the microcomputer 14 A flash memory 15 for storing a home appliance control program for processing control signals of the same; A relay 16 for operating the home appliance, and a transistor 17 for turning the relay 16 on and off in accordance with the drive information signal of the microcomputer 14.

상기 RJ-45(11)는 평범한 전화선을 통해 디지털신호를 전송하기 위한 단일회선 잭이다. 최고 19.2kbps까지의 속도로 접속하기 위해서는 꼬임이 없는 전선을 쓸 수 있으나, 이더넷과 같은 고속 네트워크에 접속하기 위해서는 꼬임대선을 사용한다. 이러한 RJ-45(11)는 일반가정에서 인터넷을 연결할 수 있도록 ADSL(Asymmetric Digital Subscriber Line) 이나 LAN 케이블의 단자에 연결된다. 상기 RJ-45(11)는 TPTX+, TPTX-, TPRX+, TPRX-의 4개선에 접속되어 데이터를 송수신한다.The RJ-45 (11) is a single line jack for transmitting a digital signal through a normal telephone line. Twisted wires can be used to connect at speeds up to 19.2 kbps, but twisted pairs are used to connect to high-speed networks such as Ethernet. The RJ-45 (11) is connected to the terminal of the ASL (Asymmetric Digital Subscriber Line) or LAN cable to connect the Internet in the home. The RJ-45 (11) is connected to four lines of TPTX +, TPTX-, TPRX +, and TPRX- to transmit and receive data.

상기 이더넷 컨트롤러(13)는 근거리통신망 기술에서 데이터의 전송 확인과 관리를 담당한다. 이더넷 컨트롤러(13)는 내부에 로직(logic)회로 및 메모리를 가지고 있고, 통신네트워크상에서 데이터를 전송하는 표준규약인 OSI (Open System Interconnection) 7 계층분류 중에, 1층인 물리적 계층인 하드웨어 수단을 제공하고 2층인 데이터링크(data link) 계층인 PPP(Point-to-Point Protocol) 기능을 수행한다.The Ethernet controller 13 is responsible for data transmission confirmation and management in the local area network technology. The Ethernet controller 13 has a logic circuit and a memory therein, and provides hardware means, which are physical layers, which are the first layers of the OSI (Open System Interconnection) 7 layer classification, which is a standard protocol for transmitting data over a communication network. It performs a Point-to-Point Protocol (PPP) function, which is a data link layer that is two layers.

상기 마이컴(14)은 고속처리에 의하여 인터넷의 IP(Internet Protocol), ICMP(Internet Control Message Protocol), TCP(Transmission Control Protocol), HTTP(Hypertext Transfer Protocol) 등을 수행하여 가정용기기의 제어정보를 수신한다.The microcomputer 14 receives the control information of the home appliance by performing Internet Protocol (IP), Internet Control Message Protocol (ICMP), Transmission Control Protocol (TCP), Hypertext Transfer Protocol (HTTP), etc. do.

상기 플래시 메모리(15)는 가정용기기에 적합한 각각의 제어용 GUI(graphical user interface) 프로그램과 자바(JAVA) 프로그램이 저장되고, 이 프로그램들은 상기 마이컴에서 가정용기기의 제어정보에 따라 호출되어 수행된다.The flash memory 15 stores respective control graphical user interface (GUI) programs and Java (JAVA) programs suitable for home appliances, and these programs are called and executed according to the control information of the home appliance in the microcomputer.

상기 자바 프로그램은 인터넷의 분산환경에서 사용되도록 설계된 프로그래밍 언어로서, 프로그래밍의 완전한 객체지향성을 강화하여 한 대의 컴퓨터나, 네트웍상의 분산 클라이언트/서버 환경에서도 실행되는 응용프로그램을 만드는데 모두 사용될 수 있다. 또한 웹페이지의 일부로서 쓰이는 작은 응용프로그램 모듈이나 애플릿 드을 만드는 데에도 사용된다.The Java program is a programming language designed to be used in a distributed environment of the Internet, and can be used to create an application that runs on a single computer or in a distributed client / server environment on a network by reinforcing the complete object orientation of programming. It is also used to create small application modules or applets that are used as part of a web page.

상기 이더넷 건트롤러(13)와 마이컴(14)과 플래시 메모리(15)는 일체적으로 결합되어 대형 운영체계의 일부가 되거나, 또는 다양한 하드웨어 장치의 일부로서 포함될 수 있는 내장형 웹서버(100)를 구성한다. 이러한 내장형 웹서버(100)는 가격이 저렴하고 유지비가 적게 들며 적은 전력량으로도 가용될 수 있다.The Ethernet gun controller 13, the microcomputer 14, and the flash memory 15 are integrally combined to form an embedded web server 100 that may be part of a large operating system or included as part of various hardware devices. do. Such a built-in web server 100 may be available with a low power, low maintenance costs and a small amount of power.

상기 계전기(16)는 가정용기기(10)를 동작시키는 데 있어서, 가정용기기의 수에 따라 계전기(16)도 추가되어 마이컴(14)에서 제어된다. 또한 상기 계전기(16)는 트랜지스터의 스위칭역할에 의해 가정용기기를 동작시키는 트라이액(triac)으로도 대체될 수 있다.In the operation of the household appliance 10, the relay 16 is also controlled by the microcomputer 14 by adding a relay 16 according to the number of household appliances. The relay 16 may also be replaced with a triac that operates a household appliance by switching transistors.

상기와 같이 구성된 본 발명에 따른 가정용기기 원격제어장치의 동작을 살펴보면 다음과 같다.Looking at the operation of the remote control device for home appliances according to the present invention configured as described above are as follows.

먼저, 인터넷망을 통하여 사용자가 가정용기기 제어신호(S1)를 전송하면, 상기 RJ-45(11)를 통하여 수신된 가정용기기 제어신호는 트랜스(12)에서 분리/추출되고, 상기 이더넷 컨트롤러(13)에서 전송 확인되어 상기 마이컴(14)으로 보내진다.First, when a user transmits a home appliance control signal S1 through the Internet network, the home appliance control signal received through the RJ-45 (11) is separated / extracted from the transformer 12, and the Ethernet controller 13 ) Is confirmed and sent to the microcomputer 14.

상기 마이컴(14)으로 전달된 신호(S1)는 플래시 메모리(15)에 저장된 프로그램으로 마이컴(14)에서 처리되어 구동정보신호를 발생시킨다. 상기 구동정보신호는 계전기(16)의 스위칭역할을 하는 트랜지스터(17)를 동작시키고, 상기 트랜지스터(17)에 의해 구동되는 계전기(16)는 가정용기기(10)를 동작시키게 된다.The signal S1 transmitted to the microcomputer 14 is processed by the microcomputer 14 as a program stored in the flash memory 15 to generate a driving information signal. The drive information signal operates the transistor 17 which acts as a switching device of the relay 16, and the relay 16 driven by the transistor 17 operates the home appliance 10.

상기 마이컴에서 계전기(16)나 트랜지스터(17)의 상태를 파악하여 가정용기기 상태정보신호(S2)를 생성하고 원격으로 가정용기기(10)를 제어하는 사용자에게 전달하여 가정용기기(10)의 상태를 표시한다.The microcomputer detects the state of the relay 16 or the transistor 17 to generate the home appliance state information signal S2 and transmits the state to the user who remotely controls the home appliance 10 to inform the state of the home appliance 10. Display.

상기의 가정용기기(10)들은 집안내의 사람의 출입 및 움직임을 감지하는 센서에 따라 동작되어 가정용기기의 동작상태에 따라 집안의 보안상황에 파악할 수 있다. 물론 사용자의 임의에 따라 상기 센서의 기능을 ON/OFF 시킬 수 있다.The home appliance 10 is operated according to a sensor for detecting the entry and movement of a person in the house guide can grasp the security situation of the house according to the operation state of the home appliance. Of course, the function of the sensor can be turned ON / OFF according to the user's arbitrary.

따라서, 사용자는 가정용기기(10)가 원하는 동작을 수행하도록 제어가능하며, 현 작동상태나 정보를 인지하여 집안의 보안상태를 파악할 수 있다. 그리고, 내장형 웹서버(100)에서 가정용기기에 따라 저장된 프로그램을 변경/추가시킴으로써, 복합적인 기능을 수행할 수 있다.Therefore, the user can control the home appliance 10 to perform a desired operation, and can grasp the security state of the house by recognizing the current operation state or information. In addition, by changing / adding the stored program according to the home appliance in the embedded web server 100, a complex function may be performed.

이러한 인터넷과 가정용기기를 연결하여 가정용기기들을 제어함으로써 궁극적으로 가정자동제어시스템을 구축시키고, 유/무선 인터넷 기반에서 활용될 수 있으며, 나아가서는 인공지능시스템으로 각각의 웹서버를 제어함으로써 지능형 가정제어시스템을 구현할 수 있다.By connecting such internet and home devices to control home devices, it is ultimately possible to build a home automatic control system and utilize them on the wired / wireless internet base. Furthermore, intelligent home control by controlling each web server with an artificial intelligence system. You can implement the system.

상기와 같이 구성되는 본 발명의 가정용기기 원격제어장치는 가격이 저렴하고 유지가 간단한 내장형 웹서버를 사용하여 가정에 있는 기기들을 인터넷과 연결시킴으로써, 사용자가 적은 비용으로도 원격으로 가정용기기들을 제어할 수 있으며, 각각의 가정용기기의 동작 상태정보를 인지하여 집안의 보안상태를 파악할 수 있고, 사용자가 원하는 집안 상태를 설정할 수 있는 효과가 있다.Home appliance remote control device of the present invention configured as described above by using a built-in web server of low cost and simple maintenance, by connecting the devices in the home with the Internet, the user can remotely control home appliances at low cost It is possible to grasp the security state of the house by recognizing the operation state information of each household device, there is an effect that the user can set the desired house state.

Claims (4)

외부통신망을 통해 가정용기기 제어신호가 분리/추출되어 송수신되도록 신호를 변환하는 트랜스와; 상기 트랜스와 연결되어 전송되는 가정용기기 제어신호의 전송을 확인하고 관리하는 신호관리부와; 가정용기기마다 고유 IP를 할당하고 상기 신호관리부를 통해 수신되는 가정용기기 제어신호에 따라 가정용기기를 제어 동작시키도록 구동정보신호를 산출하는 동시에 가정용기기의 IP에 따른 정보신호를 산출하는 제어부와; 상기 제어부에서 가정용기기들의 제어신호를 처리하는 가정용기기 제어 프로그램이 저장되는 메모리부와; 상기 제어부의 구동정보신호에 따라 가정용기기를 동작시키는 구동수단으로 이루어진 가정용기기 원격제어장치.A transformer for converting a signal such that the home appliance control signal is separated / extracted and transmitted and received through an external communication network; A signal manager to check and manage transmission of a control signal of a home appliance connected to the transformer; A control unit for allocating a unique IP for each household device and calculating a drive information signal to control and operate the household device according to the household device control signal received through the signal manager; A memory unit in which the control unit stores a home appliance control program for processing control signals of home appliances; Remote control device for home appliances comprising a drive means for operating a home appliance according to the drive information signal of the control unit. 제 1 항에 있어서,The method of claim 1, 상기 메모리부는 플래시 메모리로 구성되는 것을 특징으로 하는 가정용기기 원격제어장치.And the memory unit comprises a flash memory. 제 1 항에 있어서,The method of claim 1, 상기 구동수단은 가정용기기를 동작시키는 계전기(relay)와, 상기 계전기를 구동정보신호에 따라 ON/OFF시키는 스위칭단자로 구성되는 것을 특징으로 하는 가정용기기 원격제어장치.And the driving means comprises a relay for operating the home appliance, and a switching terminal for turning the relay on and off according to the drive information signal. 제 1 항에 있어서,The method of claim 1, 상기 구동수단은 가정용기기를 동작시키는 트라이액(triac)과, 상기 트라이액을 구동정보신호에 따라 ON/OFF시키는 스위칭단자로 구성되는 것을 특징으로 하는 가정용기기 원격제어장치.The driving means comprises a triac (triac) for operating the home appliance, the remote control device for home appliances, characterized in that consisting of a switching terminal for turning on / off the triac according to the drive information signal.
KR1020000076115A 2000-12-13 2000-12-13 the remote control device in used apparatus of house KR20020047625A (en)

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Application Number Priority Date Filing Date Title
KR1020000076115A KR20020047625A (en) 2000-12-13 2000-12-13 the remote control device in used apparatus of house
DE2001614350 DE60114350T2 (en) 2000-12-13 2001-08-03 Device and method for distance control of household appliances
EP01118910A EP1217475B1 (en) 2000-12-13 2001-08-03 Apparatus and method for remotely controlling household appliances
EP05015542.3A EP1598714B1 (en) 2000-12-13 2001-08-03 Apparatus and method for remotely controlling household appliances
JP2001240289A JP2002218566A (en) 2000-12-13 2001-08-08 Apparatus and method for remotely controlling household appliances
CN2003101230040A CN1540947B (en) 2000-12-13 2001-08-10 Apparatus for remotely controlling household appliances
CNB011238909A CN100454855C (en) 2000-12-13 2001-08-10 Device and method for long distance controlling domestic electric appliance
US09/941,874 US6956461B2 (en) 2000-12-13 2001-08-30 Apparatus and method for remotely controlling household appliances
US11/085,165 US7809786B2 (en) 2000-12-13 2005-03-22 Apparatus and method for remotely controlling household appliances

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