CN201204599Y

CN201204599Y - Wireless network card with radio function

Info

Publication number: CN201204599Y
Application number: CNU200820118477XU
Authority: CN
Inventors: 李学福
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-11
Filing date: 2008-06-11
Publication date: 2009-03-04
Anticipated expiration: 2018-06-11

Abstract

The utility model discloses a take wireless network card of radio function, it contains interface circuit, wireless internet module and power supply circuit, this interface circuit and wireless internet module are connected through bus interface, this power supply circuit is through first power supply interface, second power supply interface respectively with interface circuit, wireless internet module is connected, more contain the frequency modulation module, the input of this frequency modulation module of frequency modulation signal connection, frequency modulation module and wireless internet module are connected through bus interface, power supply circuit is connected with the frequency modulation module through third power supply interface, frequency modulation module output audio signal. The frequency modulation module is connected with the earphone ground wire and the earphone, the frequency modulation signal is input from the earphone ground wire, and the audio signal is output from the earphone. By adopting the structure, the wireless network card with the radio function can be obtained when the network is not connected.

Description

The wireless network card of band radio function

Technical field

The utility model relates to a kind of card of surfing Internet, and a kind of wireless Internet card that has radio function particularly is provided.

Background technology

Along with the progress of science and technology, development of times, computer has become requisite a kind of instrument in people's daily life, plays important effect in people's work, study and amusement and recreation.And along with the popularization of network, make the performance of computer obtain great performance especially, therefore, people to computer with and subsidiary function higher requirement has also just been arranged.

The necessary accessory of online computing it---network interface card has been one of standard configuration hardware in the present computer.Previous network interface card mostly is with telephone wire or netting twine and connects the networking, and it has the idle of distance, and is convenient inadequately.Therefore, also have a kind of wireless network interface card, its need not telephone wire or netting twine can connect the networking, fashion very easy to use is accepted by popular gradually, has boundless market prospects.

And utilize the online of computer network interface card to listen to broadcast receiver, FM frequency modulation for example, need to connect specific website, this website provides this audio frequency of listening to channel to download, and utilizes network interface card to download to this locality and listens to, and will listen to earlier to connect the networking, it needs occupied bandwidth more, and need collect certain expense usually, audibility is also undesirable, is difficult to satisfy people and listens to wireless demand.

The utility model content

The technical problem that the utility model solved is to provide a kind of wireless network card of the band radio function that can also can listen to when not connecting the networking.

To achieve these goals, the technical solution adopted in the utility model is: a kind of wireless network card with radio function, it comprises interface circuit, Wireless Internet access module and power circuit, this interface circuit is connected by bus interface with Wireless Internet access module, this power circuit is by first power interface, the second source interface respectively with interface circuit, Wireless Internet access module is connected, more comprise the frequency modulation module, FM signal connects the input of this frequency modulation module, the frequency modulation module is connected by bus interface with Wireless Internet access module, power circuit is connected frequency modulation module output audio signal by the 3rd power interface with the frequency modulation module.

Wherein, this bus interface is the UART interface.

This bus interface is a USB interface.

This frequency modulation module connects earphone ground wire and headset earpiece, and this FM signal is from the input of earphone ground wire, and audio signal is exported from headset earpiece.

The beneficial effect of the wireless network card of the utility model band radio function is:

1, need not surf the Net and to listen to broadcast receiver, save expenses of surfing Internet;

2, do not take the online bandwidth, do not influence networking speed;

3, utilize the ground wire input of FM signal from earphone, audio signal utilizes earphone as antenna from the receiver output of earphone cleverly, and structure is ingenious.

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Description of drawings

Fig. 1 is the schematic block circuit diagram of the wireless network card of the utility model band radio function;

Fig. 2 is for using the schematic block circuit diagram of TEA5767 frequency modulation module.

Embodiment

Referring to shown in Figure 1, the wireless network card of the utility model band radio function, it comprises interface circuit 1, Wireless Internet access module 2 and power circuit 4, interface circuit 1 is connected by bus interface 5 with Wireless Internet access module 2, this bus interface 5 can be UART or USB interface, this power circuit 4 is by first power interface (VCC1) 41, second source interface (VCC2) 42 respectively with interface circuit 1, Wireless Internet access module 2 is connected, also comprise frequency modulation module 3, FM signal inserts the input of this frequency modulation module 3, frequency modulation module 3 is connected by bus interface (I2C) 7 with Wireless Internet access module 2, power circuit 4 is connected these frequency modulation module 3 output audio signals by the 3rd power interface (VCC3) 43 with frequency modulation module 3.

Above-mentioned FM signal is from the ground wire input of the earphone of frequency modulation module 3, and audio signal is from the receiver output of the earphone of frequency modulation module 3.

Can be connected by interface circuit 1 between above-mentioned wireless Internet card and the notebook computer, realize being connected by bus interface 5 with the mutual of Wireless Internet access module 2, Wireless Internet access module 2 is provided with the mode of operation and the frequency parameter of frequency modulation module 3 by the I2C bus, control frequency modulation module 3 is come acknowledge(ment) signal with the ground wire of earphone as antenna, and the signal that receives is demodulated into audio signal exports from earphone, it is pleasant to hear finally to play to the user.

Below describe the utility model in detail with a specific embodiment again.

See also shown in Figure 1, for example the user need be subjected to logical FM103.9MHz, give the notebook interface circuit that is connected with the interface circuit 1 of wireless Internet card by the application passes on the notebook computer with this instruction, power circuit 4 is imported original power supply by first power interface 41 by above-mentioned interface circuit 1, and Wireless Internet access module 2, frequency modulation module 3 required power supplys are imported by second source interface 42 and the 3rd power interface 43.Interface circuit 1 is UART or USB interface serial data with the instruction transformation that obtains, and instruction is sent to Wireless Internet access module 2 by this bus interface 5, Wireless Internet access module 2 is received the laggard line data deciphering of data, and be converted into the data format of frequency modulation module 3 uses and pass to frequency modulation module 3 by bus interface (I2C) 7, the instruction of the FM signal of 103.9Mhz has been received and identified to frequency modulation module 3 at this moment, according to this instruction mode of operation is set, be provided with and accept frequency, to be demodulated into audio signal from the 103.9Mhz signal that antenna is received and export from earphone, the user can be pleasant to hear to required radio station.

Continuous seeing also shown in Figure 2ly, is the schematic block circuit diagram that the utility model is used TEA5767 frequency modulation module.The TEA5767 high sensitivity radio reception module chip that this frequency modulation module 3 has adopted PHILIPS company to produce, this chip is the fully integrated single-chip FM radio reception product of low-voltage and low energy consumption, supports automatic digital tuning.Utilize ground wire 8 inputs of FM signal from earphone, audio signal utilizes earphone as antenna from receiver 9 outputs of earphone cleverly.

In sum, the utility model from application target, on the usefulness, viewpoint such as progressive and novelty sets forth, the practical improvement that it has, function enhancement and practical important document that the utility model patent method is emphasized have been accorded with, shown in the implementation and accompanying drawing that the utility model is above, be one of the utility model preferred embodiment, be not to limit to the utility model with this, be with, such as with approximate, identical person such as structure of the present utility model, device, feature, all should belong to of the present utility model founding within purpose and the claim.

Claims

1, a kind of wireless network card with radio function, it comprises interface circuit, Wireless Internet access module and power circuit, this interface circuit is connected by bus interface with Wireless Internet access module, this power circuit is by first power interface, the second source interface respectively with interface circuit, Wireless Internet access module is connected, it is characterized in that: more comprise the frequency modulation module, FM signal connects the input of this frequency modulation module, the frequency modulation module is connected by bus interface with Wireless Internet access module, power circuit is connected frequency modulation module output audio signal by the 3rd power interface with the frequency modulation module.

2, the wireless network card of band radio function as claimed in claim 1 is characterized in that, this bus interface is the UART interface.

3, the wireless network card of band radio function as claimed in claim 1 is characterized in that, this bus interface is a USB interface.

4, the wireless network card of band radio function as claimed in claim 1 is characterized in that, this frequency modulation module connects earphone ground wire and headset earpiece, and this FM signal is from the input of earphone ground wire, and audio signal is exported from headset earpiece.