CN207321461U - A kind of Intelligent set top box of built-in FM audio emission functions - Google Patents
A kind of Intelligent set top box of built-in FM audio emission functions Download PDFInfo
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- CN207321461U CN207321461U CN201721390332.0U CN201721390332U CN207321461U CN 207321461 U CN207321461 U CN 207321461U CN 201721390332 U CN201721390332 U CN 201721390332U CN 207321461 U CN207321461 U CN 207321461U
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Abstract
The utility model discloses a kind of Intelligent set top box of built-in FM audio emissions function, including set-top box main process task chip, FM audios transceiving chip, FM transmitting-receiving magnetic built-in antennas, the input terminal of FM audio transceiving chips is connected with the voice-frequency signal terminal of set-top box main process task chip, the output terminal of FM audio transceiving chips is connected with FM transmitting-receiving magnetic built-in antennas, for launching the audio signal of set-top box main process task chip output, FM transmitting-receiving magnetic built-in antennas carry out wireless connection with exterior FM audio reception devices.The utility model adds FM audio transceiving chips, realizes FM audio emission functions, can accomplish clear sound high-fidelity, and other people can will not be had an impact, circuit is simple, easy to implement, of low cost, has a good application prospect with the outer sound of closing television.
Description
Technical field
A kind of Intelligent set top box of built-in FM audio emission functions is the utility model is related to, belongs to electronics techniques neck
Domain.
Background technology
With broadcasting and television network, telephone network, the rapid development of internet, the concept of the integration of three networks has caused academia
More and more paid close attention to industrial circle, Intelligent set top box is widely applied.At present, Intelligent set top box on the market, except
Radio and television, phone, internet function beyond, without others miscellaneous functions, still, the user individual of Intelligent set top box
Demand is also more and more, for example possesses FM audio emission functions, the outer sound reproduction sound poor definition of TV, if possessing FM audio emissions
It can accomplish clear sound high-fidelity after function, when particularly playing music, it is very not to require high user for tonequality
Wrong selection, moreover, being capable of FM receiving devices（Such as FM earphones, the mobile phone of FM receive capabilities）Audio signal can be received, can root
Volume is adjusted according to the hobby of oneself, and other people will not be had an impact.Existing Intelligent set top box, or it is irrealizable,
It is to be currently needed for solving the problems, such as.
Utility model content
The utility model aim be in order to overcome existing Intelligent set top box, except radio and television, phone, internet work(
Beyond energy, without others miscellaneous function, such as the problem of FM audio emission functions.The built-in FM audio emissions of the utility model
The Intelligent set top box of function, adds FM audio transceiving chips, realizes FM audio emission functions, can accomplish that clear sound is high and protect
Very, and other people can will not be had an impact, circuit is simple, easy to implement, of low cost, has with the outer sound of closing television
Good application prospect.
In order to achieve the above object, technical solution is used by the utility model：
A kind of Intelligent set top box of built-in FM audio emission functions, including set-top box main process task chip, cable TV signal
Process circuit, wireless wifi network interface circuit, usb circuit, SD card interface circuit, cable television audio and video output electricity
Road, the cable TV signal process circuit, wireless wifi network interface circuit, usb circuit, SD card interface circuit, have
Line TV audio and video output circuit is connected with set-top box main process task chip respectively, further includes FM audios transceiving chip, FM transmitting-receivings
Magnetic built-in antenna, the input terminal of the FM audios transceiving chip are connected with the voice-frequency signal terminal of set-top box main process task chip
Connect, the output terminal of the FM audios transceiving chip is connected with FM transmitting-receiving magnetic built-in antennas, for launching set-top box main process task
The audio signal of chip output, the FM transmitting-receiving magnetic built-in antennas carry out wireless connection with exterior FM audio reception devices.
A kind of Intelligent set top box of foregoing built-in FM audio emission functions, the FM audio reception devices are FM earphones
Or the mobile phone of FM receive capabilities.
A kind of Intelligent set top box of foregoing built-in FM audio emission functions, the FM audios transceiving chip is RDA5820
Chip.
A kind of Intelligent set top box of foregoing built-in FM audio emission functions, the maximum of the FM transmitting-receivings magnetic built-in antenna
Transmitting range is between 10-20m.
A kind of Intelligent set top box of foregoing built-in FM audio emission functions, the working frequency range of the FM audios transceiving chip
Between 76-108MHz.
A kind of Intelligent set top box of foregoing built-in FM audio emission functions, the FM audios transceiving chip are connected with crystal oscillator
Chip, the vibration frequency 32.768KHz of the crystal oscillator chip.
A kind of Intelligent set top box of foregoing built-in FM audio emission functions, further includes watchdog circuit, work instruction electricity
Road, the watchdog circuit, working indicating are connected with set-top box main process task chip respectively.
The beneficial effects of the utility model are：The Intelligent set top box of the built-in FM audio emissions function of the utility model, increases
Add FM audio transceiving chips, realized FM audio emission functions, can accomplish clear sound high-fidelity, and can be with the outer of closing television
Sound, will not have an impact other people, and circuit is simple, easy to implement, of low cost, have a good application prospect.
Brief description of the drawings
Fig. 1 is the system block diagram of the Intelligent set top box of the built-in FM audio emissions function of the utility model；
Fig. 2 is connection of the Intelligent set top box with FM audio reception devices of the built-in FM audio emissions function of the utility model
Schematic diagram；
Fig. 3 is the peripheral circuit diagram of the FM audio transceiving chips of the utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is described further.Following embodiments are only used for more clear
Illustrate to Chu the technical solution of the utility model, and the scope of protection of the utility model cannot be limited with this.
As shown in Figures 1 and 2, the Intelligent set top box of the built-in FM audio emissions function of the utility model, including set-top box
Main process task chip, cable TV signal process circuit, wireless wifi network interface circuit, usb circuit, SD card interface electricity
Road, cable television audio and video output circuit, the cable TV signal process circuit, wireless wifi network interface circuit, USB connect
Mouth circuit, SD card interface circuit, cable television audio and video output circuit are connected with set-top box main process task chip respectively, further include
FM audios transceiving chip, FM transmitting-receiving magnetic built-in antennas, input terminal and the set-top box main process task core of the FM audios transceiving chip
The voice-frequency signal terminal of piece is connected, and the output terminal of the FM audios transceiving chip is connected with FM transmitting-receiving magnetic built-in antennas,
For launching the audio signal of set-top box main process task chip output, the FM transmitting-receiving magnetic built-in antennas connect with exterior FM audios
Receiving unit carries out wireless connection.
Preferably, the FM audio reception devices are FM earphones or the mobile phone of FM receive capabilities, can receive FM transmittings
The equipment of signal, the sound sent so as to closing television, user can adjust volume according to the hobby of oneself, and will not
Other people are had an impact
Preferably, the FM audios transceiving chip is RDA5820 chips, has integrated level height, low in energy consumption, and cost is low etc.
Advantage, can send cable TV signal（Cable TV signal process circuit）Audio signal, Web TV（Wireless wifi network
Network interface circuit）Audio signal or be locally stored（Usb circuit or SD card interface circuit）Audio signal；And
And, additionally it is possible to FM frequency modulation broadcastings are received, realize the function of television broadcasting.
Preferably, the maximum launch range of the FM transmitting-receivings magnetic built-in antenna is between 10-20m.
Preferably, the working frequency range of the FM audios transceiving chip is between 76-108MHz.
As shown in figure 3, being the peripheral circuit diagram of RDA5820 chips, the FM audios transceiving chip is connected with crystal oscillator chip,
The vibration frequency 32.768KHz of the crystal oscillator chip.
Preferably, watchdog circuit, working indicating, the watchdog circuit, working indicating difference are further included
It is connected with set-top box main process task chip, watchdog circuit can receive external interference in set-top box main process task chip（Such as electrostatic
Interference）When, when set-top box main process task chip system collapses, restart set-top box main process task chip, ensure set-top box main process task chip
Normal operation；Working indicating, can be used to indicate that the working status of set-top box main process task chip.
The Intelligent set top box of the built-in FM audio emissions function of the utility model, operation principle are：FM audio transceiving chips
For audio signal transmitting base station, signal source is various, includes the television audio signals of wired also television signal processing circuit；USB connects
Mouth circuit or the audio signal that signal is locally stored of SD card interface circuit storage；The network of wireless wifi network interface circuit
Television audio signals, its FM transmitting frequency ranges, can arbitrarily be set, user uses external world's FM audio frequency apparatuses between 76-108MHZ
（Such as FM earphones or the mobile phone of FM receive capabilities）, corresponding reception channel is adjusted to, there is removable reception, transmission range
Far, clear sound and do not influence other people work rest the advantages that.
In conclusion the Intelligent set top box of the built-in FM audio emissions function of the utility model, adds the transmitting-receiving of FM audios
Chip, realizes FM audio emission functions, can accomplish clear sound high-fidelity, and can be with the outer sound of closing television, will not be to other
People has an impact, and circuit is simple, easy to implement, of low cost, has a good application prospect.
The basic principle, main features and advantages of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope
It is defined by the appending claims and its equivalent thereof.
Claims (7)
1. a kind of Intelligent set top box of built-in FM audio emission functions, including at set-top box main process task chip, cable TV signal
Circuit, wireless wifi network interface circuit, usb circuit, SD card interface circuit, cable television audio and video output circuit are managed,
The cable TV signal process circuit, wireless wifi network interface circuit, usb circuit, SD card interface circuit, You Xian electricity
It is connected respectively with set-top box main process task chip depending on audio and video output circuit, it is characterised in that：Further include FM audios transceiving chip,
FM receives and dispatches magnetic built-in antenna, the input terminal of the FM audios transceiving chip and the voice-frequency signal terminal of set-top box main process task chip
It is connected, the output terminal of the FM audios transceiving chip is connected with FM transmitting-receiving magnetic built-in antennas, for launching set-top box master
The audio signal of process chip output, the FM transmitting-receiving magnetic built-in antennas are wirelessly connected with exterior FM audio reception devices
Connect.
A kind of 2. Intelligent set top box of built-in FM audio emission functions according to claim 1, it is characterised in that：The FM
Audio reception device is FM earphones or the mobile phone of FM receive capabilities.
A kind of 3. Intelligent set top box of built-in FM audio emission functions according to claim 1, it is characterised in that：It is described
FM audios transceiving chip is RDA5820 chips.
A kind of 4. Intelligent set top box of built-in FM audio emission functions according to claim 1, it is characterised in that：The FM
The maximum launch range of magnetic built-in antenna is received and dispatched between 10-20m.
A kind of 5. Intelligent set top box of built-in FM audio emission functions according to claim 3, it is characterised in that：The FM
The working frequency range of audio transceiving chip is between 76-108MHz.
A kind of 6. Intelligent set top box of built-in FM audio emission functions according to claim 5, it is characterised in that：The FM
Audio transceiving chip is connected with crystal oscillator chip, the vibration frequency 32.768KHz of the crystal oscillator chip.
A kind of 7. Intelligent set top box of built-in FM audio emission functions according to claim 1, it is characterised in that：Also wrap
Include watchdog circuit, working indicating, the watchdog circuit, working indicating respectively with set-top box main process task chip phase
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721390332.0U CN207321461U (en) | 2017-10-26 | 2017-10-26 | A kind of Intelligent set top box of built-in FM audio emission functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721390332.0U CN207321461U (en) | 2017-10-26 | 2017-10-26 | A kind of Intelligent set top box of built-in FM audio emission functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207321461U true CN207321461U (en) | 2018-05-04 |
Family
ID=62378664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721390332.0U Active CN207321461U (en) | 2017-10-26 | 2017-10-26 | A kind of Intelligent set top box of built-in FM audio emission functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207321461U (en) |
-
2017
- 2017-10-26 CN CN201721390332.0U patent/CN207321461U/en active Active
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