CN201887917U - Wireless microphone and receiver for teaching - Google Patents
Wireless microphone and receiver for teaching Download PDFInfo
- Publication number
- CN201887917U CN201887917U CN2010206495147U CN201020649514U CN201887917U CN 201887917 U CN201887917 U CN 201887917U CN 2010206495147 U CN2010206495147 U CN 2010206495147U CN 201020649514 U CN201020649514 U CN 201020649514U CN 201887917 U CN201887917 U CN 201887917U
- Authority
- CN
- China
- Prior art keywords
- wireless
- signal
- controller
- processing circuitry
- receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a wireless microphone and a wireless receiver. The wireless microphone comprises a pickup, an audio processor, a radio-frequency processing circuit, a controller and a wireless communicator, wherein the wireless communicator is capable of receiving a first wireless signal and converting the first wireless signal into a signal identifiable by a computer, the controller determines the carrier frequency of the radio-frequency processing circuit according to the first wireless signal, and the radio-frequency processing circuit transmits an acoustic signal with the determined carrier frequency. The wireless receiver comprises a radio-frequency processing circuit, an audio processor, a controller and a wireless communicator, wherein the controller controls the wireless communicator to outwardly transmit a second wireless signal carrying carrier frequency information after the wireless receiver is started. The communication frequency of the wireless microphone and the receiver can be automatically adjusted, accordingly the wireless microphone and the receiver can be used with different receivers in an automatically matched manner, are convenient to use, and are not easy to interfere with other equipment during matching.
Description
Technical field
The utility model relates to microphone and receiver, particularly a kind of wireless microphone and receiver of the adjustable radio frequency rate of haircuting.
Background technology
Along with popularizing of wireless communication technique, wireless microphone is widely used in every field, for example the television teaching system of school, modern office training system, lecture hall etc.Wireless microphone in the market adopts fixed frequency more, and the corresponding receiver of wireless microphone need not in use to carry out frequency adjustment, but mobility is poor.Not enough for overcoming this point, the multi-channel wireless microphone has appearred, and the manual communication frequency of setting wireless microphone or receiver during use uses comparatively loaded down with trivial detailsly, and is prone to the channel interference.
The utility model content
Technical problem to be solved of the present utility model provides a kind of wireless microphone that is used to impart knowledge to students and the receiver that can adjust communication frequency automatically.
The technical solution of the utility model is: a kind of wireless microphone, but the pick-up that comprises radio reception and output sound signal, the audio process that links to each other with described pick-up and described voice signal is handled, but the also rf processing circuitry of the described voice signal of wireless transmission links to each other with described audio process, the controller that links to each other with described rf processing circuitry, and the wireless telecommunications device that links to each other with described controller.This wireless telecommunications device can receive first wireless signal and this first wireless signal is converted to the computer discernible signal.Described controller is determined the carrier frequency of described rf processing circuitry according to this first wireless signal.Described rf processing circuitry is with determining that good carrier frequency sends described voice signal.
As the advantageous modification of technique scheme, described rf processing circuitry comprises voltage controlled oscillator, signal modulator, radio frequency amplifier, transmitting antenna and rf control unit.Described voltage controlled oscillator can produce described carrier frequency under the control of described controller, and sends confirmation signal to described controller after the described carrier frequency of locking.Described signal modulator can be modulated described voice signal according to described carrier frequency.Described radio frequency amplifier can carry out power amplification with the voice signal after the modulation.But the voice signal of described transmitting antenna wireless transmission after power amplification.Described rf control unit can enable or close described radio frequency amplifier under the control of described controller.Described controller is controlled described rf control unit and is enabled described radio frequency amplifier after receiving described confirmation signal.Described wireless telecommunications device is an infrared remote receiver.
A kind of wireless receiver, comprise that but received RF signal also is converted to this radiofrequency signal the rf processing circuitry of audio signal, link to each other, be used to handle the audio process of described audio signal, the controller that is electrically connected with described rf processing circuitry with described rf processing circuitry, and the wireless telecommunications device that links to each other with described controller.Described controller outwards sends second wireless signal that carries carrier wave frequency information at the described wireless telecommunications device of wireless receiver start back control.
As the advantageous modification of technique scheme, described wireless receiver also comprises the field intensity Pilot detectors that is connected between described rf processing circuitry and the controller, is used to generate field intensity signal and pilot signal and sends to described controller; Described controller enables described audio process according to described field intensity and pilot signal, and closes described wireless telecommunications device.Described wireless telecommunications device is an infrared transmitter.Described rf processing circuitry can comprise at least two frequencies, and described wireless receiver also comprises the mode of operation switch that links to each other with described controller, can adjust the frequency of described rf processing circuitry by adjusting described mode of operation switch.Described wireless receiver also comprises the loudspeaker that links to each other with described audio process, is used for the audio signal through Audio Processing is converted to sound.
The relative prior art of the utility model has following remarkable advantage;
Wireless microphone of the present utility model and receiver can be adjusted communication frequency automatically, thereby can match use with different receivers automatically, and be easy to use, is difficult for producing interference with other equipment in the process of pairing.
Description of drawings
Fig. 1 is the circuit block diagram of wireless microphone among the embodiment.
Fig. 2 is the circuit block diagram of wireless receiver among the embodiment.
Embodiment
Describe in further detail below in conjunction with specific embodiment and accompanying drawing structural principle the utility model wireless microphone and receiver.
As shown in Figure 1, the wireless microphone 100 of the utility model one embodiment can be adjusted its carrier frequency automatically according to a wireless signal that receives after powering on, and can not send wireless audio signal before adjusting carrier frequency.This wireless microphone 100 mainly comprises pick-up 10, audio process 20, rf processing circuitry 30, controller 40 and the wireless telecommunications device 50 that is connected in series, and the navigator 22 that links to each other with rf processing circuitry 30.
But the sound in pick-up 10 reception environments also is converted to analog electrical signal (abbreviation voice signal) with this sound.Audio process 20 links to each other with pick-up 10, and it amplifies this voice signal, is converted to digital audio signal again and also is sent to rf processing circuitry 30 after the compression.Navigator 22 is used to generate pilot signal.
To sum up, can adjust carrier frequency automatically after wireless microphone 100 powers on, and rf control unit 35 is in closed condition before carrier frequency is adjusted, can outwards launch any frequency signal, avoid interference used wireless receiver last time.
As shown in Figure 2, the wireless receiver 200 of the utility model one embodiment can be after start outwards sends second wireless signal that carries self carrier wave frequency information automatically, stops to send second wireless signal automatically after receiving the wireless audio signal that adopts this carrier frequency modulation.This wireless receiver 200 mainly comprises rf processing circuitry 210, audio process 220 and the loudspeaker 230 that is connected in series, and field intensity Pilot detectors 240, controller 250, wireless telecommunications device 260 and mode of operation switch 270.
But rf processing circuitry 210 received RF signals also are converted to audio signal with this radiofrequency signal.Rf processing circuitry 210 mainly comprises reception antenna, frequency-selector, frequency mixer, intermediate frequency amplifier and the demodulator that is connected in series, and the voltage controlled oscillator 212 that links to each other with frequency mixer.The element that rf processing circuitry 210 comprises is all existing element commonly used, repeats no more its function.In the present embodiment, use for convenient, rf processing circuitry 210 comprises at least two frequencies.By mode of operation switch 270 is set, the current carrier frequency of controller 250 adjustable seamless controlled oscillators 212, thus produce interference when avoiding many cover wireless microphones and receiver to use simultaneously each other.After carrier frequency was adjusted at every turn, controller 250 all can be recorded in adjusted carrier-frequency data in the memory body, thereby wireless telecommunications device 260 can send correct carrier-frequency data.
Audio process 220 is used to handle the audio signal of rf processing circuitry 210 outputs.Loudspeaker 230 is used for this audio signal is converted to voice signal.Among other embodiment, can omit loudspeaker 230.
Field intensity Pilot detectors 240 is connected between the demodulator and controller 250 of rf processing circuitry 210, is used for generating corresponding field intensity signal and pilot signal and sending to controller 250 according to the signal of demodulator output.
Like this, after wireless receiver 200 starts, can send the frequency pairing signal from the trend wireless microphone, receive before the wireless audio signal that matches with current carrier frequency at rf processing circuitry 210, audio process 220 is closed, do not export the signal that rf processing circuitries 210 receive to loudspeaker 230, the noise that can effectively avoid wireless microphone and receiver to produce in the pairing process broadcasts.After rf processing circuitry 210 received the wireless audio signal that matches with current carrier frequency, wireless telecommunications device 260 was closed, and avoided interference other wireless microphones near wireless receiver 200.
After the supporting use of the utility model wireless microphone and wireless receiver, wireless microphone can move freely, can be automatically and the different radio receiver realize the frequency pairing, easy to use, be convenient to maintenance and management, and in use be difficult for producing and disturb with other equipment.
The above embodiment has only expressed execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (9)
1. wireless microphone that is used to impart knowledge to students, but the pick-up that comprises radio reception and output sound signal, the audio process that links to each other with described pick-up and described voice signal is handled, but the also rf processing circuitry of the described voice signal of wireless transmission links to each other with described audio process, and the controller that links to each other with described rf processing circuitry, it is characterized in that:
Described wireless microphone also comprises the wireless telecommunications device that links to each other with described controller, this wireless telecommunications device can receive first wireless signal and this first wireless signal is converted to the computer discernible signal, described controller is determined the carrier frequency of rf processing circuitry according to this first wireless signal, and described rf processing circuitry is with determining that good carrier frequency sends voice signal.
2. the wireless microphone that is used to impart knowledge to students according to claim 1 is characterized in that, described rf processing circuitry comprises:
Voltage controlled oscillator, it produces described carrier frequency under the control of described controller, and sends confirmation signal to described controller after the described carrier frequency of locking;
Signal modulator, it is modulated described voice signal according to described carrier frequency;
Radio frequency amplifier, the voice signal after it will be modulated carries out power amplification;
Transmitting antenna, the voice signal of its wireless transmission after power amplification; And
Rf control unit, it enables or closes described radio frequency amplifier under the control of described controller;
Described controller is controlled described rf control unit and is enabled described radio frequency amplifier after receiving described confirmation signal.
3. the wireless microphone that is used to impart knowledge to students according to claim 2 is characterized in that, described wireless telecommunications device is an infrared remote receiver.
4. wireless receiver that is used to impart knowledge to students, comprise that but received RF signal also is converted to this radiofrequency signal the rf processing circuitry of audio signal, the audio process that links to each other, is used to handle described audio signal with described rf processing circuitry, and the controller that is electrically connected with described rf processing circuitry, it is characterized in that:
Described wireless receiver also comprises the wireless telecommunications device that links to each other with described controller, and described controller outwards sends second wireless signal that carries carrier wave frequency information at the described wireless telecommunications device of wireless receiver start back control.
5. the wireless receiver that is used to impart knowledge to students according to claim 4 is characterized in that, also comprises the field intensity Pilot detectors that is connected between described rf processing circuitry and the controller, is used to generate field intensity signal and pilot signal and sends to described controller; Described controller enables described audio process according to described field intensity and pilot signal.
6. the wireless receiver that is used to impart knowledge to students according to claim 5 is characterized in that, also comprises the field intensity Pilot detectors that is connected between described rf processing circuitry and the controller, is used to generate field intensity signal and pilot signal and sends to described controller; Described controller cuts out described wireless telecommunications device according to described field intensity and pilot signal.
7. the wireless receiver that is used to impart knowledge to students according to claim 6 is characterized in that, described wireless telecommunications device is an infrared transmitter.
8. the wireless receiver that is used to impart knowledge to students according to claim 5, it is characterized in that, described rf processing circuitry comprises at least two frequencies, described wireless receiver also comprises the mode of operation switch that links to each other with described controller, can adjust the frequency of described rf processing circuitry by adjusting described mode of operation switch.
9. the wireless receiver that is used to impart knowledge to students according to claim 8 is characterized in that, also comprises the loudspeaker that links to each other with described audio process, is used for the audio signal through Audio Processing is converted to sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206495147U CN201887917U (en) | 2010-12-09 | 2010-12-09 | Wireless microphone and receiver for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206495147U CN201887917U (en) | 2010-12-09 | 2010-12-09 | Wireless microphone and receiver for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201887917U true CN201887917U (en) | 2011-06-29 |
Family
ID=44185459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206495147U Expired - Lifetime CN201887917U (en) | 2010-12-09 | 2010-12-09 | Wireless microphone and receiver for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201887917U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102843625A (en) * | 2011-06-20 | 2012-12-26 | 耳领域有限公司 | Classroom-used wireless mic system for automatically paring |
| CN104918187A (en) * | 2015-05-13 | 2015-09-16 | 深圳市好兄弟电子有限公司 | Wireless microphone system frequency matching method |
| CN106656254A (en) * | 2017-01-24 | 2017-05-10 | 武汉信达易通科技有限公司 | Adjustable-frequency adjustable-bandwidth wireless transmission device and system |
-
2010
- 2010-12-09 CN CN2010206495147U patent/CN201887917U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102843625A (en) * | 2011-06-20 | 2012-12-26 | 耳领域有限公司 | Classroom-used wireless mic system for automatically paring |
| CN104918187A (en) * | 2015-05-13 | 2015-09-16 | 深圳市好兄弟电子有限公司 | Wireless microphone system frequency matching method |
| CN104918187B (en) * | 2015-05-13 | 2017-02-22 | 深圳市好兄弟电子有限公司 | Wireless microphone system frequency matching method |
| CN106656254A (en) * | 2017-01-24 | 2017-05-10 | 武汉信达易通科技有限公司 | Adjustable-frequency adjustable-bandwidth wireless transmission device and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8923930B2 (en) | Hearing assistive system with low power interface | |
| EP2871857B1 (en) | A binaural hearing assistance system comprising two wireless interfaces | |
| CA2444166A1 (en) | Method and apparatus for remote control of an audio source such as a wireless microphone system | |
| JP2009531975A5 (en) | ||
| CN204272108U (en) | A kind ofly can support the communicator of ultrashort wave relaying with short-wave radio set intercommunication | |
| KR101436593B1 (en) | Radio Transmitting/Receiving Apparatus Using RF Dual Band | |
| CN105516839A (en) | Wireless microphone based on Bluetooth transmission technology | |
| CN203608193U (en) | Hand-held short-wave radio station based on radio frequency digitalization | |
| CN201887917U (en) | Wireless microphone and receiver for teaching | |
| CN106301412A (en) | For alleviating the preemption automatic growth control (AGC) of interference | |
| CN104486709A (en) | Wireless microphone system based on frequency signal modulating technology | |
| KR200410863Y1 (en) | Wireless microphone system capable of automatically channel setting | |
| CN203039685U (en) | Wireless transmission system | |
| CN103731163B (en) | A kind of wireless transmitting system | |
| CN201123090Y (en) | Mobile phone monitoring system | |
| US9179245B1 (en) | Proximity-based audio sharing system | |
| CN201188660Y (en) | Television embedded with wireless sound transmitting device | |
| CN103248391A (en) | Digital DMR interphone using digital frequency synthesizer as local oscillator | |
| KR102046401B1 (en) | Communication system of a wireless microphone transmitter and a battery charger | |
| CN106658246A (en) | Wireless microphone system | |
| US20100184387A1 (en) | Wireless apparatus | |
| KR101524801B1 (en) | Wireless microphone receiver, wireless microphone transmitter, and wireless microphone system including the same | |
| CN207531006U (en) | A kind of central controlled wireless microphone system | |
| KR200424413Y1 (en) | Wireless Amplifier Using Bluetooth for Lecture | |
| CN205336268U (en) | Data signal wireless transmission equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
|
| CX01 | Expiry of patent term |