CN201072653Y - General equipment used for connection audio system and radio receiver - Google Patents
General equipment used for connection audio system and radio receiver Download PDFInfo
- Publication number
- CN201072653Y CN201072653Y CNU2007201463932U CN200720146393U CN201072653Y CN 201072653 Y CN201072653 Y CN 201072653Y CN U2007201463932 U CNU2007201463932 U CN U2007201463932U CN 200720146393 U CN200720146393 U CN 200720146393U CN 201072653 Y CN201072653 Y CN 201072653Y
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- radio receiver
- audio system
- audio
- radio
- antenna
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- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The utility model provides the general-purpose equipment for connecting the audio system and the radio receiver, which is the general-purpose equipment that is soon installed with the general audio output terminals for connecting the audio system and the radio receiver. The equipment can transmit the audio signal from the output terminal of the audio system to the sound system connected with the output terminal of the radio receiver. The utility model comprises a control unit and a radio frequency converter of the audio signal. The radio frequency converter is electrically connected with the control unit and the aerial switch. The first antenna input terminal of the aerial switch is used for connecting the antenna, while the second antenna input terminal of the aerial switch is connected with the radio frequency converter of the audio signal by coaxial-cable. The output terminal of the aerial switch is used for connecting the antenna input terminal of the radio receiver, and the drive point of the aerial switch is electrically connected with the control unit.
Description
Technical field
The present invention relates to be used for telecommunication apparatus that audio system is connected with radio receiver.
Background technology
Recently, be used for the equipment that audio-frequency information reproduces in a large number and appear at daily use.These equipment comprise mobile phone, pocket computer, GPS navigation device, audio frequency and MP3 player etc.For a lot of people, use every day these equipment to become the thing of similar custom.Therefore when being away from home, taking a walk, travelling, people want to listen to necessary audio-frequency information or music.Most audio systems have the audio output that for example is used to connect earphone.In the time of in the passenger carriage that rests on the automobile that is equipped with the vehicular radio receiver, the listener can feel that needs be used to the vehicle-mounted sound system of listening to, and this is more far better than earphone usually because of the quality of reproducing by the tonequality of this system.
Can solve the connectivity problem of audio system and radio receiver with different modes.
People know without any need for the simplest method of extra connection device.This method only can be used for comprising these wireless devices of audio input end.If wireless device has this input end, can realize being connected of audio system and radio receiver by using the audio output that electric wire connects audio system and the audio input end of radio receiver so.Regrettably, the radio receiver that has an audio input end is not very general.
If radio receiver have be used to play tape tape cassete (promptly, it is radio tape player (radio cassette player)), (the United States Patent (USP) NO.6304764 that submit to October 16 calendar year 2001 H01B1/38) can be with the equipment that connects audio system and this radio receiver by the particular tape of the electronic system (electric scheme) in the magnetic field of voice signal modulation to be equipped with generation so.This electronic system is connected with the audio system output terminal, then tape is put into tape cassete, the field region that the magnetic head of radio tape player and this electronic system are generated is approaching, just is enough to sound system by radio tape receiver and reproduces sound signal from the audio system output terminal.
On total combination of features, be the common apparatus (the United States Patent (USP) NO.44906 that on April 18th, 2000 submitted to, H04Q 7/32) that is used to connect audio system and vehicular radio receiver as the most approaching equipment of the present invention of the comprehensive characteristics of prototype.This common apparatus comprises control module and the radio frequency transducer of the sound signal that is electrically connected with control module.The input end of radio frequency transducer is set to be used for be electrically connected with the audio output of audio system, and the output terminal of radio frequency transducer is used for being electrically connected with transmitting set.
This equipment can be transformed into radio-frequency band with the sound signal that receives from universal audio system output terminal and the electromagnetic wave that in the operating frequency range of vehicular radio receiver this mode obtained is transmitted in the air.Radio receiver receives the signal of these signals as some wireless stations, detects them and by vehicle-mounted sound system audio frequency component is reproduced with standard mode.
The shortcoming of prototype is low noise immunity.This shortcoming relates to connection device wireless signal transmission is subjected to basic restriction to the output power of air.This signal can not be strong, otherwise be equipped with like device car will to be adjacent travel in or the signal of other cars of stopping in the traffic congestion receive and cause harmful interference.The radio signal of prototype equipment can be disturbed even be suppressed fully to the radio signal of the more powerful fixed terminal that generates on side frequency.
Summary of the invention
The utility model is intended to solve the problem that strengthens noise immunity.This problem can link to each other with radio receiver audio system and not need launching electromagnetic wave to solve to the technical result of air by realizing via radio channel.
The utility model provides a kind of common apparatus that audio system is connected with wireless device of being used for, and described common apparatus comprises: control device; The RF converter of sound signal is electrically connected to described control device, and has and be used for the input end that links to each other with the audio output of described audio system; Described common apparatus also comprises controlled RF switch, the one RF input end of wherein said controlled RF switch is used for linking to each other with antenna, the 2nd RF input end of described controlled RF switch links to each other by the RF output terminal of coaxial RF cable with the RF converter of described sound signal, the RF output terminal of described controlled RF switch is used for linking to each other with the RF input end of described wireless device, and the control input end of described controlled RF switch links to each other with described control device.
Because the common apparatus (the radio frequency transducer that comprises control module and be electrically connected with control module) that is used for audio system is connected with radio receiver also comprises duplexer, therefore can realize this technical result.The input end of radio frequency transducer is used for being electrically connected with the audio output of audio system.First antenna input of duplexer is used for being connected with car antenna, and second antenna input is connected with the output terminal of the radio frequency transducer of sound signal.The output terminal of duplexer is used for and being connected of radio receiver antenna input, and the control input end of duplexer is electrically connected with control module.
Therefore the utility model can link to each other with radio receiver audio system and not need launching electromagnetic wave to air via radio channel, can significantly increase the signal power on the radio receiver antenna input and strengthen the noise immunity of equipment.
Description of drawings
Fig. 1 is the synoptic diagram that is connected with radio receiver according to common apparatus of the present utility model and audio system.
Embodiment
See also Fig. 1, figure 1 illustrates the design of equipment required for protection.Wherein, control module 1 is as for example electronic switch; The radio frequency transducer 2 of sound signal (the RF converter that also is called sound signal) for example is expressed as, and is placed on the suprabasil circuit module of the chip BH1417F that is produced by ROHM; Audio system 3 is expressed as, for example the MP3 player of iRiver; Duplexer 4 antenna reversing switch 4 (being controlled RF switch) in other words is produced in the substrate of controlled electromagnetic relay.Here, first antenna input of duplexer 4 (i.e. a RF input end) is used for being electrically connected with antenna 5, second antenna input of duplexer 4 (i.e. the 2nd RF input end) is connected by the output terminal of concentric cable 6 with the radio frequency transducer 2 of sound signal, the output terminal of duplexer 4 (being the RF output terminal) is used for being connected with the antenna input of radio receiver 7, and the control input end of duplexer 4 is electrically connected with control module 1.Sound system 8 is connected with the audio output of radio receiver 7.
The present invention moves in the following manner.
In order equipment required for protection to be installed in for example in the car, the user should:
1) disconnects being connected of antenna input of antenna 5 and vehicular radio receiver 7, and antenna 5 is linked to each other with first antenna input of antenna reversing switch 4;
2) antenna output end with antenna reversing switch 4 links to each other with the antenna input of vehicular radio receiver 7;
3) the radio frequency transducer 2 of adjustment sound signal makes the carrier frequency of sound signal be in the working range of vehicular radio receiver 7.
Audio output in audio system 3 is connected with the input end of the radio frequency transducer 2 of sound signal, and when positive potential supplied to the circuit of being made up of the radio frequency transducer 2 and the duplexer 4 of sound signal from power supply, this equipment was ready to operation.In this state, the electric contact of duplexer 4 is set, thereby make antenna 5 be electrically connected to radio receiver antenna input 7 by them, wherein this radio receiver antenna input 7 receives radio channel and uses sound system 8 to reproduce sound with the normal mode operation.
The user can pass through, for example, and pressing button and will control the control module 1 of this equipment by the circuit ground that the radio frequency transducer 2 and the duplexer 4 of sound signal are formed.The result, the radio frequency transducer of sound signal will be transformed in the radio-frequency band from the electric signal of the audio output of audio system 3, duplexer 4 disconnects the contact with the antenna input electrical connection of antenna 5 and radio receiver 7, and be connected to such contact, by this contact, the output terminal of the radio frequency transducer 2 of sound signal is electrically connected with radio receiver antenna input 7 by concentric cable 6.In this state, equipment required for protection can be connected the audio output of audio system 3 with radio receiver 7.Realize connection device of the present invention, make to be launched in the air without any radiowave.The noise immunity that this can significantly increase the signal power on the radio receiver antenna input 7 and strengthen equipment.
Claims (1)
1. one kind is used for common apparatus that audio system is connected with wireless device, and described common apparatus comprises:
Control device;
The RF converter of sound signal is electrically connected to described control device, and has and be used for the input end that links to each other with the audio output of described audio system;
It is characterized in that, described common apparatus also comprises controlled RF switch, the one RF input end of wherein said controlled RF switch is used for linking to each other with antenna, the 2nd RF input end of described controlled RF switch links to each other by the RF output terminal of coaxial RF cable with the RF converter of described sound signal, the RF output terminal of described controlled RF switch is used for linking to each other with the RF input end of described wireless device, and the control input end of described controlled RF switch links to each other with described control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201463932U CN201072653Y (en) | 2007-06-29 | 2007-06-29 | General equipment used for connection audio system and radio receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201463932U CN201072653Y (en) | 2007-06-29 | 2007-06-29 | General equipment used for connection audio system and radio receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201072653Y true CN201072653Y (en) | 2008-06-11 |
Family
ID=39551210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201463932U Expired - Fee Related CN201072653Y (en) | 2007-06-29 | 2007-06-29 | General equipment used for connection audio system and radio receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201072653Y (en) |
-
2007
- 2007-06-29 CN CNU2007201463932U patent/CN201072653Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080611 |