CN2627740Y

CN2627740Y - Sound player to be wirelessly propagated

Info

Publication number: CN2627740Y
Application number: CN 03261749
Authority: CN
Inventors: 陈启耀
Original assignee: YONGFU ELECTRIC APPLIANCES CO Ltd
Current assignee: YONGFU ELECTRIC APPLIANCES CO Ltd
Priority date: 2003-05-27
Filing date: 2003-05-27
Publication date: 2004-07-21
Anticipated expiration: 2013-05-27

Abstract

A wirelessly transmitted sound playing device is used for reading and processing an optical disk storing sound signal and is played by a radio. The sound playing device comprises a loading unit for loading the optical disk; a signal processing unit for reading, decoding and outputting the sound signal in the optical disk; an audio digital-analog conversion unit for converting the digital audio signal outputted from the signal processing unit to analog audio signal; a filtering and amplifying unit for filtering, amplifying and outputting the analog audio signal; and an emitting unit for emitting the analog audio signal outputted from the filtering and amplifying unit in the form of radio signal with preset frequency.

Description

But the sound play device of radio transmission

[technical field]

The utility model relates to a kind of sound play device, but particularly relates to a kind of sound play device of radio transmission.

[background technology]

Usually all can assemble automobile audio in the general automobile; be used for playing back music for listening to; difference along with car type and outfit; the automobile audio of being installed in some automobile does not dispose and is used for playing as CD; VCD; the playing device of DVD one class 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 disc data is installed in the automobile; what comparatively perplex during installation is; must be connected in disc class playing device and automobile audio main frame with transmission line; the transmission of sound signals that disc class playing device could be read is to the automobile audio 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.

[summary of the invention]

The purpose of this utility model is to provide a kind of voice signal that reads the radio transmission mode to transmit, and connects the sound play device that transmission line transmits voice signal and need not see through.

But the sound play device of the utility model radio transmission is in order to reading and to handle a CD that stores audio signal, and is carried out by a broadcast receiver and to play.This sound play device includes a loading unit, that loads described CD and reads the voice signal of described CD and the signal processing unit of decoding output, and the signal of successively this signal processing unit being exported a digital audio analog-converted unit and the filtering amplifying unit handled.This audio frequency digital resolution converting unit is to be connected in this signal processing unit, receives the digital audio and video signals of this signal processing unit output and is converted to simulated audio signal.This filtering amplifying unit is connected in this digital audio analog-converted unit output, and this simulated audio signal is given filtering, amplifies back output.

It is characterized in that: but the sound play device of this radio transmission more includes a transmitter unit, this transmitter unit is connected in this filtering amplifying unit output, will be launched with the radio signal of preset frequency by the simulated audio signal of this filtering amplifying unit output.Whereby, described broadcast receiver can wireless mode receive the radio signal that this transmitter unit launches and play.

[description of drawings]

But be elaborated below by most preferred embodiment and accompanying drawing sound play device to the utility model radio transmission, in the accompanying drawing:

But Fig. 1 is the simple outside drawing of the sound play device embodiment of the utility model radio transmission, and a wireless signal transmission relation of itself and an automobile audio is described.

Fig. 2 is the function block schematic diagram of present embodiment.

Fig. 3 is the circuit connection schematic diagram of loading unit among Fig. 2, signal processing unit, digital audio analog-converted unit 13, image coding unit, filter.

Fig. 4 is the circuit connection schematic diagram of a filtering amplifying unit among Fig. 2.

Fig. 5 is the circuit connection schematic diagram of a transmitter unit among Fig. 2.

[embodiment]

As shown in Figure 1, but the embodiment of the sound play device 1 of the utility model radio transmission is fit to be installed in the automobile, in order to read and to handle a CD 2 that stores audio frequency and signal of video signal simultaneously, certainly also can only read, audio signal, and after broadcast receiver 3 receptions by an automobile audio pre-configured in the described automobile, go out sound via the amplification of automobile audio main frame and by loudspeaker plays.

Cooperate shown in Figure 2, but sound play device 1 that should radio transmission is to comprise a loading unit 11 in order to load described CD 2, one reads the sound of described CD 2 and the signal processing unit 12 of signal of video signal and decoding output, one digital audio and video signals with these signal processing unit 12 outputs is converted to the digital audio analog-converted unit 13 of simulated audio signal, one gives filtering with this simulated audio signal also amplifies the filtering amplifying unit 14 that export the back, one transmitter unit 15 that will launch with the radio signal of preset frequency by the simulated audio signal of this filtering amplifying unit 14 outputs, the one image coding unit 16 that connects and read the digital image signal of this signal processing unit 12 and encoded reaches one and is connected in this image coding unit 16 and this coded image signal is given filter filtering 17.

Cooperate shown in Fig. 2,3, this digital audio analog-converted unit 13 is to be connected in this signal processing unit 12 outputs, signal processing unit 12 export script be the audio signal of digital form, exports after being converted to simulated audio signal.

The circuit connection schematic diagram of this filtering amplifying unit 14 sees Fig. 4, is connected this digital audio analog-converted unit 13 outputs, with the in addition filtering and amplify back output of the simulated audio signal that received.

And the circuit connection schematic diagram of this transmitter unit 15 as shown in Figure 5, be connected this filtering amplifying unit 14 outputs, the simulated audio signal that filtering amplifying unit 14 is sent, and launch with a predetermined frequency modulated radio signal that meets the telecommunication specification of territory of use.

This image coding unit 16 is output after the digital image signal of these signal processing unit 12 outputs is encoded.

This filter 17 is connected in this image coding unit 16 outputs, and will export after the coded image signal filtering that be received.Coded image signal that this filter 17 is exported and described automobile audio are irrelevant, and its practical function normally comes the show image picture via an external screen 4.

When but the sound play device 1 of this radio transmission is assembled in the described automobile, because its running is the voice signal that is read from CD 2 at last, launch with radio signal via its transmitter unit 15, and can by a broadcast receiver 3 of described automobile audio with receive frequency adjust in the above-mentioned corresponding frequency that transmits, just can make voice signal stored in the CD 2 with the radio signal load mode, receive and deliver to the automobile audio main frame and play via broadcast receiver 3, that is to say, needn't be connected the transmission line that is used for transmitting voice signal fully between the sound play device 1 of present embodiment and automobile audio, therefore can specifically improve in the past disc class playing device really must be via connecting transmission line, with the transmission of sound signals that read to automobile audio distribution that main frame causes, puzzlement in the assembling and inconvenience.Certainly, transmit the scope of sound, its transmission scope is only limited in several meters, for example in 5～10 meters, to avoid producing the situation of phase mutual interference with radio signal.In addition, when described CD 2 if belong to when only storing audio signal data, the sound play device 1 of present embodiment aforesaid image coding unit 16 and filter 17 just need not be set, and this signal processing unit 12 also only is used for reading the voice signal of CD 2 on being provided with.

In addition, the utility model not only is applicable in the automobile, the occasion that can in short distance, transmit the radio sound signal such as all can, as in room at home, also can reach the purpose of exempting to connect sound line.

Take a broad view of above-mentioned, but the sound play device 1 of the utility model radio transmission need not connect the circuit of stereo set in the car, just can be received and be play by described car radio 3, exempts the trouble of wiring assembling, so very practical really and progressive.

Claims

But 1, a kind of sound play device of radio transmission, and by broadcast receiver execution broadcast, this sound play device includes a loading unit, that loads a CD and reads the voice signal of described laser disc and the signal processing unit of decoding output, and the signal of successively this signal processing unit being exported a digital audio analog-converted unit and the filtering amplifying unit handled; This digital audio analog-converted unit is to be connected in this signal processing unit, receives the digital audio and video signals of this signal processing unit output and is converted to simulated audio signal; This filtering amplifying unit is connected in this digital audio analog-converted unit output, and this simulated audio signal is given filtering, amplifies back output;

It is characterized in that: but the sound play device of this radio transmission also includes a transmitter unit, this transmitter unit is connected in this filtering amplifying unit output, will be launched with the radio signal of preset frequency by the simulated audio signal of this filtering amplifying unit output.
But 2, the sound play device of radio transmission according to claim 1 is characterized in that:

This sound play device more comprises an image coding unit and a filter, and this image coding unit connects and reads the digital image signal of this signal processing unit and encoded, and connects to export after exporting this filter filtering to again.