KR20010097116A - Frequency Converter of the Signal with Low-frequency Bandwidth into Audio Frequency Bandwidth for Computer Sound-Card - Google Patents
Frequency Converter of the Signal with Low-frequency Bandwidth into Audio Frequency Bandwidth for Computer Sound-Card Download PDFInfo
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- KR20010097116A KR20010097116A KR1020000020912A KR20000020912A KR20010097116A KR 20010097116 A KR20010097116 A KR 20010097116A KR 1020000020912 A KR1020000020912 A KR 1020000020912A KR 20000020912 A KR20000020912 A KR 20000020912A KR 20010097116 A KR20010097116 A KR 20010097116A
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- frequency bandwidth
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0491—Circuits with frequency synthesizers, frequency converters or modulators
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
본 발명은 컴퓨터의 사운드카드로 입력 가능한 음성대역보다 낮은 주파수대역의 전기신호를 사운드카드로 입력 가능하게 하여 별도의 데이터 수집장치 없이 컴퓨터로 신호를 전송 가능하게 하는 신호변환장치에 관한 발명이다.The present invention relates to a signal conversion device that enables the transmission of a signal to a computer without a separate data acquisition device by enabling the sound card to input the electric signal of a lower frequency band than the voice band input to the sound card of the computer.
Description
본 발명은 음성 주파수 대역보다 낮은 주파수 대역의 아날로그 신호를 컴퓨터로 디지털 전송하는 방법을 다루고 있다. 통상적으로 아날로그 신호를 디지털로 변환하기 위하여 따로 자료수집 보드를 컴퓨터에 추가하거나, 다른 입출력 장치를 활용하여 컴퓨터와 자료 전송을 하게 된다. 이때, 상당한 비용이 지불되며 절차가 매우 번잡스럽게 된다. 본 발명은 대부분의 컴퓨터에 기본적으로 내장되어 있는 사운드 카드를 이용하여 저주파 아날로그 신호를 컴퓨터로 전송할 수 있게 해 주는 신호 변환 장치를 구성하는 것이다.The present invention deals with a method of digitally transmitting an analog signal of a frequency band lower than the voice frequency band to a computer. In general, in order to convert analog signals to digital, data collection boards are separately added to a computer or other input / output devices are used to transmit data with the computer. At this point, a significant cost is paid and the procedure is very complicated. The present invention is to configure a signal conversion device that enables the transmission of low-frequency analog signals to a computer by using a sound card built into most computers.
본 발명의 신호변환 장치는 저주파 기저대역의 아날로그 신호를 사운드 카드에 입력 가능하게끔 오디오 주파수 대역의 신호로 변환한다. 이렇게 변환된 신호가 사운드 카드로 입력되면, 소프트웨어적으로 다시 기저대역의 생체 신호로 복원하여필요한 디지털 형태로 활용할 수 있다.The signal conversion device of the present invention converts an analog signal of a low frequency baseband into a signal of an audio frequency band so as to be input to a sound card. When the converted signal is input to the sound card, it can be restored to the baseband biosignal in software and used in the required digital form.
본 발명의 기술적 핵심은 저주파 기저대역의 신호를 컴퓨터 사운드 카드로 입력 가능한 신호형태로 변환하는 것이다. 통상적으로 오디오 대역은 그 통과 대역이 균일한 주파수 응답을 보이지 않으므로 이러한 성질이 자칫 기저대역의 신호를 왜곡할 수 있다. 이에 대한 해결책은 기저대역 신호의 변조 기법에서 찾을 수 있다. 본 발명에서는 다양한 종류의 사운드 카드에 대해 그 입력 특성에 거의 무관하게 기저대역의 신호를 변조하여 아날로그 신호를 디지털화 할 수 있는 방법을 제시한다.The technical core of the present invention is to convert a low frequency baseband signal into a signal form that can be input to a computer sound card. Typically, the audio band has a uniform frequency response in its passband, which can distort the baseband signal. A solution to this can be found in the modulation scheme of the baseband signal. The present invention proposes a method for digitizing an analog signal by modulating a baseband signal almost regardless of its input characteristics for various kinds of sound cards.
도 1은 본 발명에 따른 시스템 구성의 개략적인 다이아그램.1 is a schematic diagram of a system configuration according to the present invention.
본 발명은 도면 1과 같이 기저대역 '신호입력부', '대역변환부', '신호출력부'로 구성되어있다. 신호입력부는 기저대역의 신호를 입력받는 부분이다. 신호입력부에서는 다음단으로 신호전송전에 신호의 진폭, 등을 조절하는 부분이다. 신호입력부에서 출력된 신호는 다음단인 대역변환부로 입력된다. 대역변환부에서 오디오 대역의 신호로 변환된다. 오디오 대역으로 변환된 신호는 신호촐력부로 전달된다. 출력부에서는 컴퓨터에 내장된 사운드 카드로 신호를 전송하기 위하여 신호의 진폭등을 조절하는 부분이다. '출력부'에서의 출력신호는 컴퓨터에 부착된 사운드 카드로 입력된다.The present invention is composed of a baseband 'signal input unit', 'band conversion unit', 'signal output unit' as shown in FIG. The signal input unit receives a baseband signal. In the signal input section, the signal stage adjusts the amplitude of the signal, etc. before the signal transmission. The signal output from the signal input unit is input to the next band conversion unit. The band converter converts the signal to an audio band. The signal converted to the audio band is transmitted to the signal output unit. The output part controls the amplitude of the signal to transmit the signal to the sound card built into the computer. The output signal from the 'output unit' is input to the sound card attached to the computer.
사운드 카드가 내장되어 있는 컴퓨터만 있다면, 본 발명의 변환기를 이용하여 쉽게 저주파 신호를 컴퓨터로 엑세스할 수 있다. 음성 주파수 대역보다 낮은 주파수영역에서의 대표적인 신호의 예로는 인체에서 측정되는 다양한 생체신호를 들 수 있다. 뇌파, 심전도, 안전도, 피부전기저항, 맥파, 체온 등과 같은 대부분의 생체신호는 주파수대역이 0.1 Hz에서 200Hz 정도의 범위에 있다. 본 발명에 의하여 이들 저주파 신호를 컴퓨터로 전송하는 방법이 획기적으로 간편해지며, 저렴한 가격으로 구현된다. 이는 생체신호 활용의 대중화가 가능할 수 있다는 것을 암시한다. 생체신호 기반의 컴퓨터 게임이라든지, 생체 신호를 이용한 인간과 컴퓨터의 인터페이스 등의 분야에 유용하게 활용될 수 있다. 앞에서 예를 든 생체신호 뿐만이 아니라 저주파 대역의 모든 아날로그 신호들에도 본 발명이 적용되므로 그 적용의 범위는 매우 넓다.If only a computer with a built-in sound card is provided, the converter of the present invention can be used to easily access low frequency signals to the computer. An example of a representative signal in a frequency region lower than the voice frequency band may include various biological signals measured in the human body. Most biological signals such as electroencephalogram, electrocardiogram, safety, skin electrical resistance, pulse wave, and body temperature range from 0.1 Hz to 200 Hz. According to the present invention, a method for transmitting these low frequency signals to a computer is greatly simplified and implemented at a low price. This suggests that popularization of biosignal utilization may be possible. It can be usefully used in the field of bio-signal based computer games or the interface between human and computer using bio-signals. Since the present invention is applied not only to the biological signals exemplified above but also to all analog signals in the low frequency band, the scope of application thereof is very wide.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000020912A KR20010097116A (en) | 2000-04-20 | 2000-04-20 | Frequency Converter of the Signal with Low-frequency Bandwidth into Audio Frequency Bandwidth for Computer Sound-Card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000020912A KR20010097116A (en) | 2000-04-20 | 2000-04-20 | Frequency Converter of the Signal with Low-frequency Bandwidth into Audio Frequency Bandwidth for Computer Sound-Card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20010097116A true KR20010097116A (en) | 2001-11-08 |
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ID=19665778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020000020912A KR20010097116A (en) | 2000-04-20 | 2000-04-20 | Frequency Converter of the Signal with Low-frequency Bandwidth into Audio Frequency Bandwidth for Computer Sound-Card |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20010097116A (en) |
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2000
- 2000-04-20 KR KR1020000020912A patent/KR20010097116A/en not_active Application Discontinuation
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