CN201957008U - Wireless receiving equipment and audio receiving system - Google Patents
Wireless receiving equipment and audio receiving system Download PDFInfo
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- CN201957008U CN201957008U CN2011200247788U CN201120024778U CN201957008U CN 201957008 U CN201957008 U CN 201957008U CN 2011200247788 U CN2011200247788 U CN 2011200247788U CN 201120024778 U CN201120024778 U CN 201120024778U CN 201957008 U CN201957008 U CN 201957008U
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Abstract
The utility model relates to wireless receiving equipment and an audio receiving system. The wireless receiving equipment comprises an antenna, a receiver and an interface. The antenna transmits aerial signals captured by the antenna to the receiver. The aerial signals captured by the antenna comprise radio frequency signals which carry audio information and control information. The receiver receives the signals, is tuned to a channel which uses a sideband within a wireless frequency band, receives audio signals from a main channel and receives the control information from a channel sideband to use the control information to process the audio signals. The interface transmits the audio signals processed by the receiver to existing audio receiving equipment. Moreover, the audio receiving system comprises the wireless receiving equipment and the existing audio receiving equipment, wherein the wireless receiving equipment is connected with the existing audio receiving equipment through the interface of the wireless receiving equipment. The existing audio receiving equipment is enabled to have a wireless information receiving function and the wireless receiving equipment can be used in all or most of the existing audio receiving equipment.
Description
Technical field
The utility model relates to electronic communication field, relates in particular to radio receiver and audio receiving system.
Background technology
Along with improving constantly of people's living standard, digital product is being played the part of more and more important role in people's daily life.MP3, MP4, MP5, LCD TV, mobile phone, projecting apparatus, PND (PortableNavigation Devices, Portable Automatic navigation system) etc. have the equipment of playing audio-video function and are popularized gradually.Meanwhile, increasing people brings into use equipment such as audio amplifier, earphone to listen to voice messagings such as music.
Yet receiving equipments such as existing audio amplifier, earphone are wired often.Wired audio amplifier wiring is loaded down with trivial details, and takes up room.Therefore wired earphone causes earphone cord to take the User Activity space owing near excessively with user distance, has disturbed user's normal life.In addition, wired receiving equipments such as wired audio amplifier, wired earphone have also limited playback equipment and have play the voice distance.As the earphone cord limited length of wired earphone, the user need listen to voice messagings such as music in the earphone cord length range.
Wired receiving equipment quantity such as current wired audio amplifier, wired earphone are huge, abandon wired receiving equipments such as all wired audio amplifiers, wired earphone fully and reselect then too waste of radio receiver, and are also unrealistic.And radio receiver such as existing wireless sound box, wireless headset is relatively costly, and especially large-scale audio amplifier nearly all is wired.
In addition, present most voice datas transmit with digital form, generally adopt the 2.4G wireless technology.Yet this kind transmission means does not have penetrability, that is to say, can not have barrier between receiving equipment such as wireless sound box and the ANTENN AUDIO playback equipment.For example, if radio receiver such as audio amplifier and radio play equipment not in same room, then this radio receiver can't receive the audio signal that this playback equipment is launched.That is to say that this radio receiver, wireless transmitting device can't be able to normal use in such cases.
And adopt the power consumption of audio reception device, playback equipment of 2.4G wireless technology also very big, be not suitable in the portable product.
The utility model content
The utility model provides a kind of radio receiver that can overcome the above problems and audio receiving system.
In first aspect, the utility model provides a kind of radio receiver.This radio receiver comprises antenna, receiver, interface.
This antenna links to each other with receiver, so that its aerial signal that captures is sent to this receiver; Wherein, this aerial signal that captures comprises the radiofrequency signal of carrying audio-frequency information, control information.This receiver one end other end that links to each other with this antenna links to each other with interface, so that receive described radiofrequency signal, and be tuned to use the channel of sideband in the radio band, and received audio signal from main channel, receiving control information from the channel sideband, thus this audio signal handled with this control information that obtains.This interface connects this radio receiver and existing audio reception device, so that the audio signal transmission after will being handled by this receiver is to having now in the audio reception device.
In second aspect, the utility model provides a kind of audio receiving system.This system comprises the described radio receiver of first aspect, and comprises an existing audio reception device.And this radio receiver links to each other with this existing audio reception device by its interface.
The utility model is not changing on the audio reception device function bases such as existing audio amplifier, earphone, makes existing audio reception device have the wireless receiving semiotic function.And because the utility model can be used in arbitrarily in (or most) existing audio reception device.Therefore, the user only need have a radio receiver of the present utility model, and all that just can make that it has or audio reception devices such as most audio amplifier, earphone have the wireless receiving semiotic function, have saved cost greatly.In addition, therefore radio receiver of the present utility model makes this radio receiver have penetrability owing to use mode of frequency regulation, has brought convenience to the user, makes this radio receiver power consumption relatively low simultaneously.
Description of drawings
Below with reference to accompanying drawings specific embodiments of the present utility model is described in detail, in the accompanying drawings:
Fig. 1 is the radio receiver schematic diagram of an embodiment of the utility model;
Fig. 2 is the radio receiver electrical block diagram of an embodiment of the utility model;
Fig. 3 is the circuit structure diagram of receiver among Fig. 2 of an embodiment of the utility model;
Fig. 4 is the flow chart of the wireless receiving voice data of an embodiment of the utility model.
Embodiment
The utility model utilizes existing audio reception devices such as audio amplifier, earphone, by with an autonomous device---radio receiver of the present utility model, be inserted on the audio reception devices such as this audio amplifier, earphone, thereby make this audio reception device have the wireless receiving semiotic function, and then but distance reception is from the voice messagings such as music of playback equipment, and by this existing audio-frequence player device it played back.
Fig. 1 is the radio receiver schematic diagram of an embodiment of the utility model.This radio receiver comprises receiving equipment main body 110, connecting line 120, interface 130 from appearance.Wherein, this receiving equipment main body 110 comprises charging inlet 111 and switch 112.
Among Fig. 1, these receiving equipment main body 110 internal circuit board, this circuit board is used for all electricity devices of this radio receiver being fixed and being coupled together, to realize the wireless receiving semiotic function of this radio receiver.
This charging inlet 111 is interfaces that charge function is provided for this radio receiver.The user can be by being inserted into this charging inlet 111 in the apparatus such as computer, thereby be this radio receiver charging.
Need to prove that this charging inlet 111 is not limited to only adopt USB interface shown in Figure 1, it also can adopt other any interfaces, perhaps adopts two (or three) plugs.In addition, this radio receiver also can not adopt charging modes, but provides electric energy by modes such as button cells for this radio receiver.
This switch 112 provides the function of opening and cutting out this radio receiver for the user.
These connecting line 120 1 ends are connected to this receiving equipment main body 110, and the other end is connected to this interface 130, and its basic function is the transmission tone video data.
In addition, because this connecting line 120 is metals, can also multiplexing this connecting line 120 be the reception antenna of this radio receiver therefore.
The female interface that this interface 130 can be any one type, it is used for the radio receiver of present embodiment is coupled together with existing audio reception devices such as the audio amplifier with the corresponding interface type, earphones.
This interface 130 is not limited to earphone interface shown in Figure 1, promptly be not limited to 3.5 millimeters or 2.5 millimeters earphone interfaces, it can also be any one style interfaces such as 6.25 millimeters/3.5 millimeters/2.5 millimeter three core or two core TRS joints, RCA joint, XLR card farming joint, USB interface, Mini-USB interface, midi interface.
Need to prove that radio receiver contour structures of the present utility model is not limited to shown in Figure 1.For example, this radio receiver profile can also be a built-in aerial, and this moment, this radio receiver did not comprise circuit 120 from seeing in appearance.
Fig. 2 is the radio receiver electrical block diagram of an embodiment of the utility model.
This radio receiver 200 comprises interface 130, receiver 210, controller 220, antenna 240; Preferably, this radio receiver 200 also comprises channel quality assessment unit 230.
This radio receiver 200 is linked in the audio reception devices such as existing any one audio amplifier, earphone by its interface 130.At this moment, the voice messaging that this radio receiver 200 just can receive it transfers in this existing audio reception device, and plays back by this existing audio reception device.Wherein, the female interface that this interface 130 can be any one type is as female interfaces such as 3.5 millimeters earphone interfaces, 2.5 millimeters earphone interfaces, USB interface, Mini-USB interface, midi interfaces.
This antenna 240 is used to catch airborne signal, comprises catching the vision signal of carrying audio-frequency information, control information.Wherein, this control information is RDS information or identifier (ID).
This channel quality assessment unit 230 is according to channel signal to noise ratio assessment channel quality, and its evaluation result is sent to this receiver 210 by controller 220, so that this receiver 210 can obtain to have the channel of optimum signal-noise ratio, thereby obtain its information needed by this channel.
In the example, the channel evaluation method that this channel quality assessment unit 230 is adopted is participated in the 12/th/473, No. 281 non-provisional patent applications of the U.S..
This controller 220 is used for controlling the operations (comprising the operation of each submodule in the receiver control 210) of these radio receiver 200 all modules, and this radio receiver 200 can be worked on united and coordinating ground.
This receiver 210 is according to these channel quality assessment unit 230 resulting channels, obtain radiofrequency signal from this antenna 240, and this radiofrequency signal carried out demodulation, to obtain information such as corresponding audio frequency, RDS, and then this information that obtains transferred in the existing audio reception devices such as this audio amplifier, earphone, so that by it this audio-frequency information is played back with speech form by interface 130.
Preferably, described radiofrequency signal is FM signal (being the FM signal), and this receiver 210 is FM (frequency modulation) receiver, and it uses the FM broadcast band.And then this receiver 210 is the FM receiver with RDS (radio data system) and audio encryption ability.
The concrete operation principle of this receiver 210 is referring to Fig. 3 and respective description part thereof.
Fig. 3 is the circuit structure diagram of receiver among Fig. 2 of an embodiment of the utility model.This receiver 210 comprises tuner 311, decoder 312, audio frequency deciphering module 313, RDS and key decoder module 314, audio output 315.
The FM signal (FM signal) that this tuner 311 receives from this antenna 240, and with receiver 210 be tuned on one has a sideband in the radio band the channel, and this sideband has control information, and then exports this signal after tuning to decoder 312.Wherein, this control information is encryption key or indications (ID).In the example, this tuner 311 is a frequency modulator.
Preferably, the optimum channel that this tuner 311 obtains based on this channel quality assessment unit 230, and obtain FM signal (among Fig. 3 and not shown) based on this channel.
This decoder 312 receives by this tuner 311 signal after tuning, and to this signal after tuning carries out preliminary demodulation (decoding), so that the audio-frequency information after from main channel, obtaining encrypting, and from sideband channel, obtain corresponding information, and then will be somebody's turn to do the information that from sideband channel, obtains and be sent to this RDS and key decoder module 314, the audio-frequency information after this encryption that will obtain from main channel is sent to this audio frequency deciphering module 313.
314 pairs of information that obtain from sideband channel of this RDS and cipher key decryption block are done further decoding, obtaining RDS information and key, and then this key, RDS information are sent to this audio frequency deciphering module 313.
Wherein, RDS is a communication protocol standard that uses the FM radio broadcasting to send small amounts of digital information.The RDS system standardization several emission information types, comprise time, song (title)/artist's (artist) information and station designator symbol.RDS can use the sideband numerical data, and the use of this sideband digital signal reduces effectively or avoided interference from other channels.
Alternatively, also can not use this key and use identifier (ID).Using under the key situation, this key is provided for this audio frequency deciphering module 313.Using under identifier (ID) situation, this identifier (ID) is provided for this audio frequency deciphering module 313.
This audio frequency deciphering module 313 optionally uses from the key of this RDS and key decoder module 314 or identifier (ID), and comes the decrypted audio signal with this key or identifier, to generate the audio frequency output of deciphering.
In the example, this audio frequency deciphering module 313 uses keys to be decrypted, with the channel that keeps being tuned to or be tuned to one other channel.In another example, this audio frequency deciphering module 313 uses indications (ID), and its indications that receives (ID) and an expectation or predetermined ID compared, if the two coupling, the same channel that then is tuned to still keeps tuning, otherwise receiver 210 be tuned to one other channel.
This audio output 315 receives audio frequency output, the RDS information from this audio frequency deciphering module 313, and then it is not passed in the existing audio reception devices such as audio amplifier, earphone, so that by this existing audio reception device this audio-frequency information is played back with speech form there to be invasion (intrusion free) mode.
Fig. 4 is the flow chart of the wireless receiving voice data of an embodiment of the utility model.Wherein, the equipment of this wireless receiving voice data is an independently radio receiver.
In step 410, this independently radio receiver link to each other by its interface and an existing audio reception device, as linking to each other with existing wired audio amplifier or earphone.Wherein, this interface is the female interface of any one type, as earphone female interface or USB female interface.
In step 420, this independently radio receiver comprise receiving the FM signal of carrying audio-frequency information, control information by its antenna receiving signal.Wherein, this control information is encryption key or identifier (ID), and this control information is used for handling the audio-frequency information that it receives.
In step 430, this independently radio receiver with its be tuned to a channel that uses sideband in the radio band.
In step 440, this independently radio receiver from main channel, receive audio-frequency information, and from sub-carrier channels (sideband channel) receiving control information.If the channel that is tuned to does not comprise subcarrier, the control information that then receives is considered to null value.
Preferably, employed subcarrier is positioned at one and is higher than on the frequency band that carries the multiplexed audio signal bandwidth in the FM broadcast system.
In step 450, this independently radio receiver handle this audio-frequency information with its control information that obtains.
In the example, this control information is an encryption key, then uses this encryption key that this audio signal is carried out scrambler.
In another example, this control information is identifier (ID).At this moment, whether whether first check system ID mate with the ID that is stored in the receiver 210 to determine it.If the two coupling, the channel that then is tuned to is a channel as expected, and then exports this audio signal.
In step 460, this audio-frequency information, RDS information after independently radio receiver will be handled by its interface is sent in the audio reception devices such as audio amplifier, so that this audio reception device can play back this audio-frequency information with speech form.
Need to prove, because the diffraction characteristic of FM analog signal has determined the FM signal can walk around big barrier (as can be around wall).Therefore, adopt frequency modulation (FM) mode for radio receiver of the present utility model, significant.Only can not adopt frequency modulation (FM) mode but the utility model is limited at, in fact the utility model also can adopt amplitude modulation (AM) to wait other modulation systems.And the utility model is not limited at yet and only is used for audio signals, can be used for emission video signal, perhaps audio-video signal yet.
Obviously, under the prerequisite that does not depart from true spirit of the present utility model and scope, the utility model described here can have many variations.Therefore, the change that all it will be apparent to those skilled in the art that all should be included within the scope that these claims contain.The utility model scope required for protection is only limited by described claims.
Claims (10)
1. a radio receiver is characterized in that, comprising:
Antenna links to each other with receiver, so that its aerial signal that captures is sent to this receiver; Wherein, this aerial signal that captures comprises the radiofrequency signal of carrying audio-frequency information, control information;
Receiver, the one end other end that links to each other with this antenna links to each other with interface, so that receive described radiofrequency signal, and be tuned to use the channel of sideband in the radio band, and received audio signal from main channel, receiving control information from the channel sideband, thus this audio signal handled with this control information that obtains;
Interface connects this radio receiver and existing audio reception device, so that the audio signal transmission after will being handled by this receiver is to having now in the audio reception device.
2. a kind of radio receiver as claimed in claim 1, it is characterized in that described interface is a female interface in 3.5 millimeters earphone interfaces, 2.5 millimeters earphone interfaces, USB interface, Mini-USB interface, midi interface, 6.25 millimeters/3.5 millimeters/2.5 millimeter three core or two core TRS joints, RCA joint, the XLR card farming joint.
3. a kind of radio receiver as claimed in claim 1 is characterized in that, described antenna is that the tone frequency channel wire of built-in aerial or multiplexing this radio receiver is a reception antenna.
4. a kind of radio receiver as claimed in claim 1 is characterized in that this radio receiver also comprises the channel quality assessment unit, and this channel quality assessment unit links to each other with described receiver; So that this channel quality assessment unit is sent to this receiver with its channel quality result who estimates out, thereby makes this receiver can obtain to have the channel of optimum signal-noise ratio.
5. a kind of radio receiver as claimed in claim 1, it is characterized in that, this radio receiver also comprises controller, this controller all links to each other with this receiver, this channel quality assessment unit, to control the operations in this receiver, this channel quality assessment unit, make this radio receiver united and coordinating ground work.
6. a kind of radio receiver as claimed in claim 1 is characterized in that, described receiver also comprises tuner, decoder, RDS and key decoder module, audio frequency deciphering module;
This tuner links to each other with described antenna so that receive radiofrequency signal from described antenna, and with this radiofrequency signal be tuned on channel with sideband, and export this signal after tuning to decoder;
This decoder one end links to each other with this tuner, the other end links to each other with key decoder module, audio frequency deciphering module with this RDS, so that its tuning back signal that receives is carried out preliminary decoder, and the audio signal after from main channel, obtaining encrypting, from sideband channel, obtain corresponding information, and then the audio signal after will encrypting is sent to this RDS and key decoder module, and the information that will obtain from sideband channel is sent to this audio frequency deciphering module;
This RDS links to each other with this audio frequency deciphering module with the key decoder module, so that further decode the described information that obtains from sideband channel, obtaining RDS information and control information, and this RDS information, control information is sent to this audio frequency deciphering module;
This audio frequency deciphering module links to each other with this decoder, RDS and key decoder module, so that receive the control information from this RDS and key decoder module, and handles audio signal after this encryptions with this control information, exports with the audio frequency that generates after deciphering.
7. a kind of radio receiver as claimed in claim 6 is characterized in that, described receiver also comprises:
Audio output, one end links to each other with this audio frequency deciphering module, the other end links to each other with existing audio reception device, so that receive from the output of the audio frequency after the deciphering of this audio frequency deciphering module, RDS information, and it is passed to this existing audio reception device, thereby this audio-frequency information is played back with speech form by this existing audio reception device.
8. a kind of radio receiver as claimed in claim 6 is characterized in that, described tuner is a frequency modulator.
9. a kind of radio receiver as claimed in claim 6 is characterized in that, described existing audio reception device is wired audio amplifier or wired earphone.
10. an audio receiving system is characterized in that, comprises the described a kind of radio receiver of claim 1, and comprises an existing audio reception device; And this radio receiver links to each other with this existing audio reception device by its interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200247788U CN201957008U (en) | 2011-01-26 | 2011-01-26 | Wireless receiving equipment and audio receiving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200247788U CN201957008U (en) | 2011-01-26 | 2011-01-26 | Wireless receiving equipment and audio receiving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201957008U true CN201957008U (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200247788U Expired - Lifetime CN201957008U (en) | 2011-01-26 | 2011-01-26 | Wireless receiving equipment and audio receiving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201957008U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624409A (en) * | 2011-01-26 | 2012-08-01 | 北京昆天科微电子技术有限公司 | Wireless receiving device and wireless receiving method |
-
2011
- 2011-01-26 CN CN2011200247788U patent/CN201957008U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624409A (en) * | 2011-01-26 | 2012-08-01 | 北京昆天科微电子技术有限公司 | Wireless receiving device and wireless receiving method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NXP BV Free format text: FORMER OWNER: BEIJING QUINTIC MICROELECTRONICS CO., LTD. Effective date: 20150225 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150225 Address after: Holland Ian Deho Finn Patentee after: NXP BV Address before: 100084, B, building eight, Tsinghua Science Park, No.1, Zhongguancun East Road, Haidian District, Beijing, 301A Patentee before: Quintic Beijing Microelectroni |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |