KR100901705B1 - Remote control relay apparatus and method for creating remote control signal of infrared rays in remote control relay apparatus - Google Patents

Abstract

The present invention relates to the generation of an infrared remote control signal in a remote control relay device, the remote control relay device for generating an infrared remote control signal for receiving a delivery message for transmitting data for controlling the home appliance according to the data transmission format set in the external terminal device. A baseband remote control waveform using a data receiver, a carrier generator for generating a carrier signal using carrier information extracted from data in the received transmission message, and baseband signal information extracted from data of the received transmission message. A baseband waveform generation unit for generating a signal and a signal processing unit for generating an infrared remote control signal by using the carrier signal and the remote control waveform signal and transmitting the signal to the home appliance, the home appliance on the memory of the remote control relay device Infrared remote control signal The home appliance can be controlled without storing information about the memory, thereby saving memory space.

Remote control repeater, external terminal device, home appliance, infrared remote control signal, carrier signal, remote control waveform signal, carrier information, time information.

Description

Remote control relay apparatus and method for creating remote control signal of infrared rays in remote control relay apparatus}

The present invention is for controlling a home appliance in a network system, and in particular, a remote control relay device for generating a home appliance control signal received from an external terminal device as an infrared remote controller signal and transmitting the same to a home appliance, and generating an infrared remote controller signal from the device. It is about a method.

The present invention is derived from the research conducted as part of the new growth engine core technology development project [Task Management Number: 2007-S-009-01, Task name: platform technology to reduce power consumption of the always-on home network system].

With the development of network technology and the variety of products supporting the network, recently, a home network technology capable of controlling a network supporting home appliance in a home through the Internet or a mobile terminal at a remote location has been developed.

Typically, legacy home appliances without network matching are controlled using an infrared remote control. Therefore, since legacy home appliances do not have a remote control method, recently, a method of converting a legacy home appliance control signal received from a remote place by placing a device such as a remote control repeater in the middle has been introduced.

According to these methods, when a remote server accesses a home server or a home gateway and transmits a home appliance control command, a message for controlling a legacy home appliance to a remote control repeater is transmitted. Then, all repeaters control the legacy home appliances by converting the home appliance control signals into infrared remote control signals that can be accommodated by the legacy home appliances and sending them to the legacy home appliances.

In addition, when a home server or a home gateway serves as a remote connection point and sends a mutually promised home appliance control signal to the remote control repeater, the remote control repeater has an promised home appliance control signal and an infrared remote control signal stored in its memory. Produces a profile that matches, and generates and sends an infrared remote control signal.

1A to 1D are diagrams illustrating a data structure of a general infrared remote controller.

In general, the format of the infrared remote control signal is composed of a read code, a custom code, a data code, and the like, and FIG. 1A shows actual waveforms of the read code and the custom code data code. The custom code and data code of the general infrared remote controller are composed of 8 bits each and have a total value of 32 bits.

FIG. 1B shows a waveform representing bits '0' and '1', wherein the high level time is the same and the difference in the low level time identifies the bit.

In FIG. 1C, a waveform obtained by enlarging the waveforms of the lead code and the custom code in FIG. 1A is enlarged. When the waveform is at a high level, the waveform operates at a 38 kHz carrier.

The waveform of the 38 kHz carrier signal is shown in FIG. 1D, wherein the 38 kHz is formed as a square wave having a 1/3 duty ratio. Therefore, the receiving unit removes the carrier frequency by placing a 38 kHz bandpass filter after the infrared receiving photodiode, and detects only the baseband signals of the read code, the custom code, and the data code to identify the home control message.

However, the above-described technology requires a process of generating an infrared remote control signal after retrieving a stored profile according to a control message received from an external terminal while storing a profile of an infrared remote control signal corresponding to each home appliance in the remote control repeater.

In addition, the above-described technology requires that the memory capacity of the remote control repeater should be large when trying to control several home appliances or when there are too many kinds of home appliance control signals, and when the new home appliance is to be controlled, the remote controller repeats the control again. There is a problem of adding and recording an infrared profile.

SUMMARY OF THE INVENTION An object of the present invention is to provide a remote control relay apparatus for generating an infrared remote control signal to be transmitted to a home appliance and a method of generating an infrared remote control signal in the apparatus.

Another object of the present invention is to provide a transmission message format that can transmit any infrared remote control signal when transmitting the home appliance control signal from the external terminal device to the remote control relay without having to store the infrared remote control profile for each home appliance in the remote control relay device. In providing.

The remote control relay apparatus for achieving the objects of the present invention, the data receiving unit for receiving a transfer message for transmitting data for controlling the home appliance according to the data transmission format set in the external terminal device; A baseband waveform generator configured to extract time information from the data in the received transmission message and generate a remote control waveform signal using the extracted time information; And an infrared signal processor configured to generate an infrared remote controller signal using the remote controller waveform signal and to transmit the generated infrared remote controller signal to a corresponding home appliance, extracting and extracting carrier information from data in the received transmission message. The apparatus may further include a carrier generator configured to generate a carrier signal using the carrier information.

In accordance with another aspect of the present invention, there is provided a method for generating an infrared remote control signal in a remote control relay apparatus, the method including: receiving a delivery message for transmitting data for controlling a home appliance according to a data transmission format set in an external terminal device; Analyzing the data included in the received delivery message; Generating a carrier signal using carrier information extracted from the analyzed data; Generating a remote control waveform signal using the information extracted from the analyzed data; Generating an infrared remote control signal by adding the generated carrier signal and the generated remote control waveform signal; And transmitting the generated infrared remote control signal to a corresponding home appliance.

In addition, the infrared remote control signal generation method in the remote control relay apparatus for achieving the objects of the present invention, the step of receiving a transfer message for transmitting data for controlling the home appliance according to the data transmission format set in the external terminal device; Analyzing the data included in the received delivery message; Generating a remote control waveform signal using the information extracted from the analyzed data; Generating an infrared remote control signal by adding a preset fixed carrier signal and the generated remote control waveform signal; And transmitting the generated infrared remote control signal to a corresponding home appliance.

As described above, the remote control relay apparatus according to the present invention receives the home appliance control signal through the newly set data transmission format in the external terminal device and converts it into an infrared remote control signal to convert the infrared light of the home appliance onto the memory of the remote control relay device. The home appliance can be controlled without storing information on the remote control signal, thereby saving memory space.

In addition, the remote control relay device according to the present invention can represent any infrared remote control signal used by devices that do not follow the format of the standard infrared remote control signal as receiving the time information of the remote control waveform from the external terminal device, When the device changes, it can be used without change.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is a view showing the structure of a remote control relay apparatus according to an embodiment of the present invention.

Referring to FIG. 2, the remote control relay 200 communicates with an external terminal device 10 such as a home server or a home gateway and home appliances 20 having an infrared receiver. Herein, the data transmission method between the external terminal device 10 and the remote control relay 200 may be a wireless method such as Zigbee, UWB, WLAN, WPAN, or a wired method such as RS-485, RS-232, USB, IEEE1394, or the like. Can be.

The remote control relay 200 includes a data receiver 210, a carrier generator 220, a baseband signal generator 230, and an infrared signal processor 240.

The data receiver 210 receives a delivery message for transmitting a home appliance control signal from the external terminal device 10 and analyzes data in the delivery message.

The carrier generator 220 receives the analyzed data from the data receiver 10 and generates a carrier signal using the values of the carrier information part in the data.

The baseband signal generator 230 receives the analyzed data from the data receiver 210 and generates a baseband signal that is a remote control waveform signal using the information in the data.

The infrared signal processor 240 receives a carrier signal generated from the carrier generator 220 and a baseband signal generated from the baseband signal generator 230, and adds the two received signals to the infrared remote controller signal. Create and send it to the home appliance.

In the remote control relay apparatus having the structure as described above, a transmission message for transmitting the home appliance control signal is received from the external terminal device as described above. The data transmission format of the transmission message will be described in detail with reference to the accompanying drawings. do.

3A to 3D are diagrams illustrating a format of a delivery message for transmitting a home appliance control signal according to an embodiment of the present invention.

Referring to FIG. 3A, a data transmission format of a delivery message includes a carrier information unit 210 and a baseband signal information unit 320.

The carrier information unit 310 is an area indicating frequency information of a carrier signal carried on a baseband remote control signal. In this case, the carrier frequency information is a carrier frequency contained in the baseband signal of FIG. 1C, as shown in FIG. 1D. In general, the carrier frequency signal has a 1/3 duty ratio, but if the carrier frequency signal has a different duty ratio, it can be expressed according to the corresponding information.

The value of the carrier information unit 310 indicates a carrier frequency to be used when a device such as a remote control relay device transmits an infrared remote control signal to a home appliance, and the carrier frequency has a value of several tens of kHz. When the carrier frequency and the duty ratio are simultaneously expressed, the remote control relay apparatus may generate a carrier as shown in FIG. 1D.

As shown in FIG. 3B, two formats for the format for transmitting the carrier information unit 310 are a format composed of a carrier frequency and a duty ratio or a format composed of a high level time and a low level time.

The baseband signal information unit 320 has a data transmission format in which time information of sequential baseband signals such as T1, T2, T3, ... Tn-1, Tn is recorded as shown in FIG. 3C. It is not known how long the waveform is, so the last waveform can be high level or low level. In the waveform of the recorded sequential time information, a high level and a low level are repeatedly configured as shown in FIG. 3D. 3D shows a part of a waveform consisting of a read code, a custom code, and a data code, and the high level and the low level are repeatedly configured to record time information sequentially from the start of the read code to the end of the data code. Therefore, the remote control relay 200 may restore the remote control waveform only with the time information.

In order to transmit the baseband signal information more effectively, since the read code cannot be expressed as a bit, the time is transmitted as time information, and the remaining custom codes and data code-related parts are expressed as bit strings, and the time of bits '0' and bit '1'. Send the information as a separate value. Accordingly, it is possible to overcome the disadvantage that the amount of transmission data increases when all data bits are represented as time information. The data transmission format that enables such a representation is as shown in FIG. 3E. Since the lead code part cannot be represented by bit '0' or bit '1', it is expressed as separate time information. Accordingly, the baseband signal information unit 320 includes a time information unit of a read code, a time information unit of bit '0', a time information unit of bit '1', a data length unit and a data bit string unit. The data bit string is not determined in length and may vary depending on the type of infrared remote controller.

On the other hand, some infrared remote controllers may repeatedly use the infrared remote controller signal as shown in FIG. 1A, that is, repeat the frame. In this case, since the format as shown in FIG. 3E is not sufficient, the time interval between the repeated frames and the number of repetitions are added. Thus, the baseband signal information section 320 is a time information section of a read code, a time information section of bit '0', a time information section of bit '1', an interval time section of a repeating frame, a repetition number of times, a data length section, and a data bit string section. It is composed. Sometimes, certain household appliances do not have a lead code. In this case, the remote controller signal may be generated by matching the time information part of the lead code with the time of the initial value of the data.

Next, a method for generating an infrared remote control signal using the data received through the data transmission format of the delivery message in the remote control relay will be described in detail with reference to FIG. 4.

The external terminal device 10 transmits the data comprising the carrier information unit 310 of FIG. 3B and the baseband signal information unit 320 of FIG. 3C as a home appliance control signal through a message for transmitting the remote control unit 200. To send. Then, in step 410, the remote control relay 200 receives the delivery message and analyzes the data in the received delivery message.

Then, in step 420, the remote control relay 200 extracts carrier information recorded in the carrier information unit 310 from the analyzed data to generate a carrier signal using the extracted carrier information, and based on the analyzed data. The baseband signal is generated using the extracted information by extracting the information recorded in the band signal information unit 320. The remote control relay 200 generates the high level by the time extracted from the data of the first time information of the baseband signal information unit 320, and inverts the waveform by the time sequentially obtained from the data of the following time information. The baseband signal is generated by repeating up to the last time information.

In step 430, the remote control relay 200 generates an infrared signal by adding the generated carrier signal and the baseband signal, and then, in step 440, the infrared signal to the infrared receiver of the home appliance 20. Send it out.

Unlike the embodiment of the present invention as described above, if the carrier used by the remote control relay device is fixed, since it is not necessary to transmit information that is already determined definitely, the external terminal device such as a home server or a home gateway, the carrier to the remote control relay device Only the baseband signal information part 320 is transmitted except the information part 310. Accordingly, the remote control relay apparatus may use the fixed carrier and generate the baseband signal from the baseband signal information unit 320. In this case, the carrier information unit 320 may be excluded from the remote control data transfer format.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

1A to 1D are diagrams illustrating a data structure of a general infrared remote control signal;

2 is a view showing the structure of a remote control relay device according to an embodiment of the present invention;

3A to 3F are diagrams illustrating a data transmission format of a delivery message for transmitting a home appliance control signal according to an embodiment of the present invention;

4 is a diagram illustrating a method for generating an infrared remote control signal in a remote control relay device according to an embodiment of the present invention.

Claims (18)

A data receiver configured to receive a transfer message for transmitting data for controlling the home appliance according to a preset data transmission format from an external terminal device; A carrier generator extracting carrier information from data in the received delivery message and generating a carrier signal using the extracted carrier information; A baseband signal generator for extracting information from the data in the received transmission message and generating a baseband signal using the extracted information; And And an infrared signal processor configured to generate an infrared remote controller signal by adding the baseband signal and the carrier signal and to transmit the generated infrared remote controller signal to a corresponding home appliance. The method of claim 1, And the carrier generation unit generates a preset carrier signal irrespective of a transmission message received when the external terminal device and the remote control relay device are defined to use a preset fixed carrier signal. The method of claim 1, wherein the set data transmission format, A carrier information unit including carrier information on a carrier signal of the infrared remote controller signal; And And a baseband signal information unit including time information of the baseband signal of the infrared remote controller signal.   The method of claim 3, And the carrier information unit includes information on carrier frequency and duty ratio or high level time and low level time. The method of claim 3, And the baseband signal information unit sequentially includes a high level time and a low level time from first to last when the waveforms of the infrared remote control signal are expressed in high level and low level. The method of claim 3, wherein the baseband signal information unit, A time information section of the lead code; A time information part of bit '0'; A time information part of bit '1'; A length portion of the data bit string; And Remote control relay device comprising a data bit string.  The baseband signal information unit of claim 6, wherein when the entire infrared remote control signal uses the same pattern repeatedly, the baseband signal information unit includes: An interval time unit between repetitive signals; And Remote control repeater, characterized in that it further comprises a repeat recovery unit. The method of claim 1, And the baseband signal generator generates the baseband signal sequentially based on time information of a waveform in which a high level and a low level are repeatedly generated in the received transmission message. The method of claim 8, The baseband signal generator generates the baseband signal by extracting a read code time information part, a time information part of bit '0', a time information part of bit '1', a length part of a data bit string, and a data bit string from a received transmission message. Remote control relay device characterized in that. The method of claim 9, And the baseband signal generator further generates the baseband signal by further extracting an interval time between the number of times of remote control signal repetition and the repeated waveform. Receiving a delivery message for transmitting data for controlling a home appliance according to a data transmission format set by an external terminal device; Analyzing the data included in the received delivery message; Generating a carrier signal using carrier information extracted from the analyzed data; Generating a baseband signal using information extracted from the analyzed data; Generating an infrared remote control signal by adding the generated carrier signal and the generated baseband signal; And And transmitting the generated infrared remote control signal to a corresponding home appliance. The method of claim 11, The set data transmission format includes a carrier information unit including the carrier information, and a baseband signal information unit sequentially recording time information on a waveform having a high level and a low level repeatedly. How to generate infrared remote control signal. Receiving a delivery message for transmitting data for controlling a home appliance according to a data transmission format set by an external terminal device; Analyzing the data included in the received delivery message; Generating a baseband signal using information extracted from the analyzed data; Generating an infrared remote control signal by adding a preset fixed carrier signal and the generated baseband signal; And And transmitting the generated infrared remote control signal to a corresponding home appliance. The method of claim 13, The set data transmission format is a method for generating an infrared remote control signal in a remote control relay, characterized in that the baseband signal information unit sequentially records the time information on a waveform of a high level and a low level repeatedly. The method of claim 11 or 13, wherein generating a baseband signal using information extracted from the analyzed data comprises: Generating a high level by the time extracted from the data of the first time information; And generating the baseband signal by repeatedly inverting the waveform from the subsequent data of time information to the data of the last time information by the time obtained sequentially. .  The method of claim 12, And the carrier information unit includes information on a carrier frequency and a duty ratio, or a high level time and a low level time. The method of claim 15, The baseband signal is generated using the read code time information part extracted from the delivery message, the time information part of bit '0', the time information part of bit '1', the length part of the data bit string, and the data bit string as the time information. Infrared remote control signal generation method in a remote control relay characterized in that.  The method of claim 17, And the baseband signal is generated using the interval time between the number of repetition of the remote control signal additionally extracted from the transmission message and the repeated remote control signal as the time information.

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