CN2647669Y - Radio sound receiver - Google Patents
Radio sound receiver Download PDFInfo
- Publication number
- CN2647669Y CN2647669Y CN 03252622 CN03252622U CN2647669Y CN 2647669 Y CN2647669 Y CN 2647669Y CN 03252622 CN03252622 CN 03252622 CN 03252622 U CN03252622 U CN 03252622U CN 2647669 Y CN2647669 Y CN 2647669Y
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- sound
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- signal
- wireless signal
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Abstract
A radio sound receiver can receive a first frequency radio signal and a second frequency radio signal. The utility model comprises an outer shell, a control circuit provided inside the outer shell, and a sound playing unit; wherein the control circuit utilizes an antenna to receive the first and the second frequency radio signals which get amplified by a radio frequency amplifying unit and which pass by dint of a switching unit controlling a main control unit, then, the output signal attenuation of the main control unit can be regulated by a sound volume unit, ultimately, a sound amplifier amplifies the output signals of the sound volume regulating unit. The playing unit plays the sound after receiving the sound signals from the sound amplifying unit.
Description
(1) technical field
The utility model relates to a kind of receiving device, particularly relates to a kind of wireless voice receiving device.
(2) background technology
Usually all can assemble auto audio equipment in the general automobile; be used for playing music for listening to; difference along with car type and outfit; the auto audio equipment of being installed in some automobile does not dispose and is used for playing as CD; VCD; the playing device of DVD one class video disc data; if the car owner is when having this demand; usually can entrust the professional and technical personnel that the aforementioned playing device that can read the video disc data is installed in the automobile; what comparatively perplex during installation is; must be connected between video disc class playing device and auto audio equipment main frame with transmission line; the transmission of sound signals that video disc class playing device could be read is to the auto audio equipment main frame; because many more transmission distribution carries out the wiring assembling in the limited local small space in automobile; very inconvenience causes the puzzlement in the assembling.
In view of this, but just there is the sound transmission device 11 of radio transmission as shown in Figure 1 to be developed, in order to read and to handle a laser disc 12 that stores audio frequency, signal of video signal, after launching wireless signal by this sound transmission device 11, via the radio receiver 13 of auto audio equipment pre-configured in the automobile, after receiving in the wireless receiving mode, amplify and play out sound by loud speaker via the auto audio equipment main frame, the circuit that so just need not connect acoustical equipment in the car can be exempted wiring stack-mounted trouble.
But though the exploitation of the sound transmission device 11 of above-mentioned radio transmission, really can solve wiring stack-mounted trouble, but because general radio receiver is the design of doing at the broadcast program that is used for receiving various different frequencies, but be not to be used for arranging in pairs or groups the sound transmission device 11 of this radio transmission specially, and in some user or some occasion, there is no installing during wireless the needs, but the development and Design of wireless voice receiving device that the sound transmission device 11 of the aforementioned radio transmission of special collocation just must be arranged, so that the needs of received signal to be provided, and to provide to use and go up preferable convenience.
(3) utility model content
But the wireless voice receiving device that the purpose of this utility model is to provide a kind of sound transmission device of the radio transmission that is suitable for arranging in pairs or groups to use.
But the utility model wireless voice receiving device is suitable for receiving first, second frequency wireless signal that the sound transmission device of a radio transmission is launched, the shell, one that this wireless voice receiving device comprises a hollow is assembled in the interior control circuit of this shell, and one is connected in the sound playing unit that this control circuit is used for playing out sound.
Be characterized in: this control circuit includes: an antenna is used for receiving first, second frequency wireless signal of described sound transmission device; One radio frequency amplifying unit is connected in this antenna, and the wireless signal that this antenna received is amplified back output; One channel switch unit has first, second oscillator, and one supplies blocked operation to export the change-over switch of first, second frequency control signal respectively in order to select this first, second oscillator of activation; One main control unit, be connected in this radio frequency amplifying unit and this channel switch unit, in order to receive wireless signal and the frequency control signal that this radio frequency amplifying unit and this channel switch unit are exported, and when receiving this first, second frequency control signal respectively, control respectively first, second frequency wireless signal by and give the demodulation output sound signal; One volume adjustment unit is connected in this main control unit, and exports after receiving and adjust the decrement of the aud. snl. that this main control unit exports; And a voice amplification unit, be connected in this volume adjustment unit, and receive the aud. snl. that this volume adjustment unit exported and amplified output.This sound playing unit is connected in the voice amplification unit of this control circuit, and plays out sound after receiving the aud. snl. of being exported this voice amplification unit.
(4) description of drawings
Below by most preferred embodiment and accompanying drawing wireless voice receiving device of the present utility model is elaborated, in the accompanying drawing:
But Fig. 1 is a simple External view of the sound transmission device of radio transmission in the past, and a wireless signal transmission relation of itself and an auto audio equipment is described;
Fig. 2 is the block diagram of the utility model wireless voice receiving device embodiment;
Fig. 3 is the controllable function diagram of block of this embodiment;
Fig. 4 is the wiring schematic diagram of the control circuit of this embodiment, and the annexation of itself and a sound playing unit is described; And
Fig. 5 is the local rear view of the shell among Fig. 1.
(5) specific embodiment
Shown in Fig. 2,3, but the embodiment of the utility model wireless voice receiving device 3 is suitable for receiving the wireless signal that the sound transmission device 2 of a radio transmission is launched.
But the sound transmission device 2 of described radio transmission is optionally to send a first frequency wireless signal or a second frequency wireless signal, is to be that example explains with 88.5MHz, 88.7MHz in this first, second frequency.
The shell 4, one that this wireless voice receiving device 3 comprises two hollows is assembled in the control circuit 5 in the shell 4 wherein, and two are separately fixed at the sound playing unit 6 that is used for playing out sound on this two shell 4.
Cooperate shown in Figure 4, this control circuit 5 includes an antenna 51 that is used for receiving the wireless signal that described sound transmission device 2 launched, the one radio frequency amplifying unit 52 that this antenna 51 wireless signal that receives can be amplified, one can select the channel switch unit 53 of output first or second frequency control signal for switching, one is controlled by this channel switch unit 53 and main control unit 54 that the wireless signal of preset frequency is passed through, one is used for adjusting the volume adjustment unit 55 by the signal attenuation of this main control unit 54, reaches the voice amplification unit 56 that a signal that volume adjustment unit 55 is exported is amplified.
This antenna 51 can be received when described sound transmission device 2 is launched first, second frequency wireless signal.
This radio frequency amplifying unit 52 is to be connected in this antenna 51, and the wireless signal that this antenna 51 is received is amplified back output.
This channel switch unit 53 comprises first, second oscillator 531,532 with different oscillation frequency, and one can be for the change-over switch 533 of operation switching.This change-over switch 533 is to be assembled in institute corresponding shell 4 back sides with exposing as shown in Figure 5 in the present embodiment, be available for users to pull and switch to diverse location, switch activation first oscillator 531 or second oscillator 532 in order to selectivity, and export first, second frequency control signal respectively by one mouth 534.
This main control unit 54 is to be connected in this radio frequency amplifying unit 52 and this channel switch unit 53, in order to receive the frequency control signal that wireless signal that this radio frequency amplifying unit 52 exported and this channel switch unit 53 are exported.This main control unit 54 can be when receiving first, second frequency control signal that this channel output unit 53 exported respectively, control first, second frequency wireless signal respectively and pass through, and give after the demodulation aud. snl. by its two mouths, 541,542 output left and right sound channels.
This volume adjustment unit 55 connects mouth 541,542 aud. snl.s of being exported that receive these main control units 54, and exports after can adjusting the decrement of aud. snl..
This voice amplification unit 56 is to connect the aud. snl. that receives single 55 outputs of this volume adjustment, and is amplified back output.
In addition, this sound playing unit 6 is the voice amplification unit 56 that are connected to this control circuit 5, and plays out sound after receiving the aud. snl. of being exported this voice amplification unit 56.
Sound playing unit 6 can be used loudspeaker or earphone.
In the enforcement, aforementioned shell 4 is provided with quantity such as sound playing unit 6 is collocation, but does not exceed with two, can optionally increase and decrease.
When using this wireless voice receiving device 3, when the signal of being launched when described sound transmission device 2 is the first frequency wireless signal, the antenna 51 of this control circuit 5 just can receive the first frequency wireless signal, that is to say that this main control unit 54 can receive the first frequency wireless signal that is amplified output by radio frequency amplifying unit 52, this moment, the user must pull the change-over switch 533 of this channel switch unit 53 to the appropriate location, activation first oscillator 531 whereby, making channel switch unit 53 control this main control unit 54 via its mouth 534 output first frequency control signals allows the first frequency wireless signal pass through, and give the demodulation output sound signal, then in regular turn after volume adjustment unit 55 and voice amplification unit 56 are handled, deliver to this sound playing unit 6 and play out sound.
In like manner, when the signal of being launched when described sound transmission device 2 is the second frequency wireless signal, main control unit 54 can receive the second frequency wireless signal that is amplified output by radio frequency amplifying unit 52, must pull the change-over switch 533 of this channel switch unit 53 to the another location this moment, with activation second oscillator 532, making channel switch unit 53 control this main control unit 54 via its mouth 534 output second frequency control signals allows the second frequency wireless signal pass through, and give the demodulation output sound signal, equally after volume adjustment unit 55 and voice amplification unit 56 are handled, deliver to this sound playing unit 6 and play out sound then.
Take a broad view of above-mentioned, the design of the utility model wireless voice receiving device 3, but can convenient direct collocation the sound transmission device 2 of described radio transmission use, no matter Che Nei or indoor engineering of all exempting distribution also increase the convenience on the ornaments.
Claims (3)
1. wireless voice receiving device, but a first frequency wireless signal and a second frequency wireless signal that the sound transmission device that is suitable for receiving a radio transmission is launched, the shell, one that this wireless voice receiving device comprises a hollow is assembled in the interior control circuit of this shell, reach one and be connected in the sound playing unit that this control circuit is used for playing out sound, it is characterized in that:
This control circuit includes:
One antenna is used for receiving first, second frequency wireless signal of described sound transmission device;
One radio frequency amplifying unit is connected in this antenna, and the wireless signal that this antenna received is amplified back output;
One channel switch unit has first, second oscillator, and one supplies blocked operation to export the change-over switch of first, second frequency control signal respectively in order to select this first, second oscillator of activation;
One main control unit, be connected in this radio frequency amplifying unit and this channel switch unit, in order to receive wireless signal and the frequency control signal that this radio frequency amplifying unit and this channel switch unit are exported, and when receiving this first, second frequency control signal respectively, control respectively first, second frequency wireless signal by and give the demodulation output sound signal;
One volume adjustment unit is connected in this main control unit, and exports after receiving and adjust the decrement of the aud. snl. that this main control unit exports, and
One voice amplification unit is connected in this volume adjustment unit, and receives the aud. snl. that this volume adjustment unit exported and amplified output;
This sound playing unit is connected in the voice amplification unit of this control circuit, and plays out sound after receiving the aud. snl. of being exported this voice amplification unit.
2, wireless voice receiving device as claimed in claim 1 is characterized in that: this sound playing unit is loudspeaker.
3, wireless voice receiving device as claimed in claim 1 is characterized in that: this sound playing unit is an earphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03252622 CN2647669Y (en) | 2003-09-12 | 2003-09-12 | Radio sound receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03252622 CN2647669Y (en) | 2003-09-12 | 2003-09-12 | Radio sound receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2647669Y true CN2647669Y (en) | 2004-10-13 |
Family
ID=34328020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03252622 Expired - Fee Related CN2647669Y (en) | 2003-09-12 | 2003-09-12 | Radio sound receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2647669Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102753392A (en) * | 2010-02-09 | 2012-10-24 | 日产自动车株式会社 | Vehicle notification sound emitting apparatus |
-
2003
- 2003-09-12 CN CN 03252622 patent/CN2647669Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102753392A (en) * | 2010-02-09 | 2012-10-24 | 日产自动车株式会社 | Vehicle notification sound emitting apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |