KR20040087347A - Car FM Transmitter with subwoofer channel and handsfree function - Google Patents
Car FM Transmitter with subwoofer channel and handsfree function Download PDFInfo
- Publication number
- KR20040087347A KR20040087347A KR1020030021526A KR20030021526A KR20040087347A KR 20040087347 A KR20040087347 A KR 20040087347A KR 1020030021526 A KR1020030021526 A KR 1020030021526A KR 20030021526 A KR20030021526 A KR 20030021526A KR 20040087347 A KR20040087347 A KR 20040087347A
- Authority
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- South Korea
- Prior art keywords
- car
- filter
- handsfree
- transferred
- driver
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/16—Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying mixed concrete, e.g. having rotatable drums
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/02—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with parallel up-and-down movement of load supporting or containing element
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
- Y10S417/90—Slurry pumps, e.g. concrete
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
카오디오는 차안에서 운전자에게 많은 즐거움과 안정을 제공하는 점에서 많은 기기가 시장에 나와 있다. 그러나 가격이 비싸며, 기능이 따로 나와 있는 기기가 많아 여러 가지를 한꺼번에 구입,설치해야 하는 번거로움이 크다. 현재 승용차에 기본옵션으로 장착되어 있는 카오디오는 4-채널에, 기본 라디오와 테이프( 또는 CD Player)가 차량에 따라 다른 형태로 되어 있다. 여기에 핸즈프리를 별도로 부착하거나, 5.1채널을 감상하기 위해, 원래 있던 것을 뜯어내고, 5.1채널용 오디오기기와 그에 따른 파워앰프, 스피커까지 따로 사야하는 경우도 많이 있다.Many devices are on the market in that car audio offers a lot of fun and stability for the driver in the car. However, it is expensive and there are many devices with separate functions, so it is a lot of trouble to purchase and install several things at once. Car audio, currently fitted as standard in passenger cars, is a four-channel, basic radio and tape (or CD player), depending on the vehicle. In order to attach hands-free separately, or to listen to 5.1 channels, it is necessary to remove the original ones and buy a 5.1-channel audio device, a power amplifier, and a speaker separately.
한편, FM transmitter 기기가 있었으나, 자체의 크기가 크고, 다양한 채널을 지원하지 않는 경우가 많았다. 전력문제와 내열성도 차량용으로는 부적합한 경우가 많았고, 볼륨조절이 안되는 경우도 있었다.On the other hand, there were FM transmitters, but they were large in size and did not support various channels. Power problems and heat resistance were often unsuitable for vehicles, and volume control was not possible.
이 발명의 목적은 리소스를 최대한 활용하는데 있다. 서브우퍼용 스피커가 이 기기에 달려 있는 것은 차량에 원래 있던 4채널을 그대로 이용하며 여기에 서브우퍼(8)(또는 센터)를 추가하여 4.1채널을 만들기 위한 것이다. 저음을 강화시켜주는 우퍼를 별도로 고가에 설치하는 경우가 많은데, 이 기기를 사용하면 저가에 구현할 수 있다.The purpose of this invention is to make the best use of resources. The subwoofer's speakers depend on the device's original four channels and add a subwoofer 8 (or center) to make 4.1 channels. In many cases, the woofer that enhances the bass is installed at a high price, which can be implemented at low cost.
또, 다양한 종류의 외부입력을 그대로 카오디오에서 감상할 수 있다. 본 기기가 FM 전송방식을 통해 외부입력을 라디오 주파수에 실어서 보내면 차에 달려 있는 라디오에서 이를 수신하여 스피커를 통해 듣게 된다. 카오디오에 외부 입력을 넣을려면, 번거로운 배선과정을 거치게 되는데, 이 기기를 이용하면 차의 배선을 그대로 유지하면서 편하게 감상할 수 있다. 이 때 전송하는 스테레오 오디오신호(1)가 카라디오로 전송되어 4채널로 나오게 되며, 이 신호를 전송하지 않고 우퍼전용필터를 통과시켜, 저주파 증폭신호를 만들게 된다.In addition, various kinds of external input can be directly enjoyed in car audio. When this unit sends an external input to the radio frequency through FM transmission method, it receives it from the radio depending on the car and listens through the speaker. To put an external input into the car audio, you have to go through a cumbersome wiring process, which allows you to enjoy listening to the car's wiring. At this time, the transmitted stereo audio signal 1 is transmitted to the car radio and comes out in 4 channels, and the low frequency amplified signal is made by passing through the woofer dedicated filter without transmitting the signal.
한편, 핸즈프리케이블을 본 기기의 핸즈프리 잭(2)에 연결하면 차안에 있는 스피커를 통해 상대방의 음성신호를 들을 수 있다. 앞으로 CDMA2000, IMT2000이 보급될 경우, 음성신호뿐 아니라, MP3, WAV, MIDI 신호가 핸드폰에서 공급되는데, 자동차의 스피커에서 핸드폰에서 나오는 음악을 감상한다면 훨씬 즐겁고 다양하게 감상할 수 있다.On the other hand, if the hands-free cable is connected to the hands-free jack (2) of the device can hear the other party's voice signal through the speaker in the car. In the future, when CDMA2000 and IMT2000 become popular, not only voice signals but also MP3, WAV, and MIDI signals are supplied from mobile phones.
도 1은 본 장치의 상세 블록도이다.1 is a detailed block diagram of the apparatus.
5번 블록은 Wireless FM transmitter IC로서 카라디오로의 무선송신을 담당하는 전용칩이다. 이 IC와 주변회로를 통해 안정적이고 깨끗한 오디오신호 전송이 구현된다. 이 IC는 내부필터와 볼륨조절도 지원하며, 저전력으로 동작하여 기존에 있던 무선송신기에 비해 더 나은 기능이 구현된다. 해당공간도 작아진다.Block 5 is a wireless FM transmitter IC dedicated to wireless transmission to the car radio. Through this IC and peripheral circuit, stable and clean audio signal transmission is realized. The IC also supports internal filters and volume control, and operates at low power, enabling better functionality than existing wireless transmitters. The space is also smaller.
이 칩을 구동하기 위해 이 칩에 command를 전송하는 제어칩이 필요하다. 사용자가 본 기기에 달려있는 버튼 중 제어칩을 구동하는 버튼을 누르면 제어칩은 command를 FM IC에 전송하고 FM IC가 구동된다.To drive this chip, we need a control chip that sends commands to it. If the user presses the button that drives the control chip among the buttons on the device, the control chip sends a command to the FM IC and the FM IC is driven.
처음에 들어온 스테레오 입력신호는(1 또는 2) 5번과 4번(또는 11번) 블록으로 나뉘어 전달된다. 5번 IC로 들어간 신호는 여과,변조를 거쳐 최종적으로 카라디오로 전달된다. 주파수는 사용자가 수동으로 버튼을 사용하여 100Hz 단위로 빠른 시간내에 조절할 수 있다.The first stereo input signal (1 or 2) is divided into blocks 5 and 4 (or 11). The signal entering IC # 5 is filtered and modulated and finally delivered to the car radio. The frequency can be adjusted quickly in 100Hz steps by the user manually using the buttons.
4번(서브우퍼용 필터 및 보강회로)이나 11번(센터용 필터 및 보강회로)을 선택하는 것은 스위치 선택을 통해 정해진다. 4번으로 가는 신호는 저주파 증폭이 되어 7번 앰프를 거쳐 8번 스피커를 통해 운전자에게 전달된다. 11번으로 가는 신호는 여과와 증폭을 거쳐 같은 경로를 통해 운전자에게 전달된다.Selection of 4 (subwoofer filter and reinforcement circuit) or 11 (center filter and reinforcement circuit) is determined by switch selection. The signal to No. 4 is a low frequency amplification and is passed through the No. 7 amplifier to the driver through No. 8 speaker. The signal to 11 is filtered and amplified and sent to the driver through the same path.
한편, 핸즈프리 케이블을 핸즈프리잭(2)에 연결하면 핸드폰에서 나오는 음성신호가 외부 stereo 신호와 같은 경로로 운전자에게 전달되며, 마이크잭에 연결된 마이크에 운전자가 말을 하면 운전자의 음성신호는 저주파여과기를 거쳐 핸즈프리케이블에 연결되고 상대편 통화자에게 전달된다.On the other hand, when the hands-free cable is connected to the hands-free jack (2), the voice signal from the mobile phone is transmitted to the driver in the same path as the external stereo signal. It is connected to the hands-free cable and forwarded to the other party.
운전자의 편의에 따라 본 장치에 부착된 스피커를 사용하지 않을 수도 있으며 밖으로 전달을 하지 않고 본 장치의 스피커 만을 이용할 수도 있다. (선택스위치를 통해) 또, FM 송신기를 이용하지 않고, 차에서 나오는 오디오 출력을 바로 본 장치의 입력에 연결하여 단순한 서브우퍼 앰프겸 스피커로 사용할 수도 있다.Depending on the driver's convenience, the speaker attached to the device may not be used, or the speaker of the device may be used without transmitting outside. You can also connect the audio output from the car directly to the unit's input without using an FM transmitter and use it as a simple subwoofer amplifier and speaker.
상기에서 설명한 바와 같이 본 장치를 활용하면, 적은 비용으로 손쉽게 4.1채널(또는 5채널)을 구현할 수 있다. 뿐만 아니라 핸드폰의 음성신호를 차의 스피커를 통해 들을 수 있으므로 핸드폰 음악을 즐겁게 감상할 수 있고, 핸즈프리로 이용할 수도 있다.As described above, by utilizing the apparatus, 4.1 channels (or 5 channels) can be easily implemented at low cost. In addition, the voice signal of the mobile phone can be heard through the speaker of the car, so the user can enjoy the music of the mobile phone and can use it as a hands free.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020030021526A KR20040087347A (en) | 2003-04-07 | 2003-04-07 | Car FM Transmitter with subwoofer channel and handsfree function |
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KR1020030021526A KR20040087347A (en) | 2003-04-07 | 2003-04-07 | Car FM Transmitter with subwoofer channel and handsfree function |
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KR1020030021526A KR20040087347A (en) | 2003-04-07 | 2003-04-07 | Car FM Transmitter with subwoofer channel and handsfree function |
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2003
- 2003-04-07 KR KR1020030021526A patent/KR20040087347A/en not_active Application Discontinuation
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