CN209805990U - DTMB high-definition digital set-top box with WiFi function - Google Patents
DTMB high-definition digital set-top box with WiFi function Download PDFInfo
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- CN209805990U CN209805990U CN201920581799.6U CN201920581799U CN209805990U CN 209805990 U CN209805990 U CN 209805990U CN 201920581799 U CN201920581799 U CN 201920581799U CN 209805990 U CN209805990 U CN 209805990U
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Abstract
The utility model discloses a DTMB high definition digital set top box with WiFi function, which comprises a main control module, wherein the main control module comprises a main chip U0, an audio and video receiving module, a CA encryption module, a high definition output interface module, an audio/video output interface module, a WiFi module and a DDR3 memory U1D, wherein the audio and video receiving module, the CA encryption module, the high definition output interface module, the audio/video output interface module, the WiFi module and the DDR3 memory U1 are electrically connected with; the audio and video receiving module comprises a decoding circuit and a demodulation circuit, wherein the input end of the demodulation circuit is connected with an external antenna ANT1, the output end of the demodulation circuit is connected with the input end of the decoding circuit, and the output end of the decoding circuit is connected with a main chip U0 of the main control module; the WiFi module comprises a wireless chip U12, and the wireless chip U12 is electrically connected with a main chip U0. The utility model discloses simple structure, acceptable multiple format high definition digital television program signal.
Description
Technical Field
The utility model relates to a digital television technical field specifically relates to a DTMB high definition digital set-top box with wiFi function.
Background
The coding of DTMB digital television signals is mainly based on MPEG \ AVS in the early stage, 12 sets of standard definition programs are transmitted at a single frequency point, the image resolution reaches 480i, and the user experience is very poor; later, an operator upgrades the encoder to H.264\ AVS +, the image resolution reaches 576i, 12 sets of programs are transmitted by a single frequency point, the user experience is still poor, and particularly, the image quality is poor on a television with the size of more than 40 inches; in order to obtain better user experience, an operator adopts an H.264\ AVS + coding format to transmit high-definition programs with resolution of more than 720P, but only 2-3 sets of high-definition programs can be transmitted under the limitation of the compression ratio of an encoder. Most of set top boxes purchased by consumers at present and capable of watching local radio and television encrypted programs are CVBS (analog video broadcast and television) signal output, the definition of image quality is not enough, and the advantages of digital televisions cannot be reflected. And the set-top boxes sold in the market at the present stage can only receive television program signals and do not support the screen pushing function of the mobile phone.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a circuit structure is simple, can support the DTMB high definition digital set top box who has the wiFi function of receiving multiple DTMB digital television program signal.
The utility model discloses a technical scheme that DTMB high definition digital set-top box adopted with wiFi function is:
The utility model provides a DTMB high definition digital set-top box with wiFi function, includes host system, host system includes main chip U0, still include with host system electric connection's audio and video receiving module, CA encryption module, high definition output interface module, audio/video output interface module, wiFi module and DDR3 memory U1D.
The audio and video receiving module comprises a decoding circuit and a demodulation circuit, wherein the input end of the demodulation circuit is connected with an external antenna ANT1, the output end of the demodulation circuit is connected with the input end of the decoding circuit, and the output end of the decoding circuit is connected with a main chip U0 of the main control module.
The WiFi module comprises a wireless chip U12, and the wireless chip U12 is electrically connected with the main chip U0.
Preferably, a pin 5 of the wireless chip U12 is a power supply input end, the pin 5 of the wireless chip U12 is connected in series with a resistor R15F, the other end of the resistor R15F is connected with a power supply end, a capacitor C9F1 and a capacitor E1F1 are further connected in parallel between the pin 5 of the wireless chip U12 and the resistor R15F, and a pin 6 and a pin 7 of the wireless chip U12 are connected with the main chip U0.
preferably, an interface J3G1 is connected to the pin 2 of the wireless chip U12, and an inductor R4G1 is further connected in series between the pin 2 of the wireless chip U12 and the interface J3G 1.
Preferably, the demodulation circuit includes a tuning chip U1T, and the pin 20 and the pin 22 of the tuning chip U1T are connected to the external antenna ANT 1.
Preferably, the decoding circuit includes a decoding chip U1B, the pin 3 of the decoding chip U1B is connected to the pin 11 of the tuning chip U1T, the pin 4 of the decoding chip U1B is connected to the pin 10 of the tuning chip U1T, and the pin 126, the pin 125 and the pin 123 of the decoding chip U1B are respectively connected to the pin 2, the pin 3 and the pin 5 of the tuning chip U1T. The output end of the decoding chip U1B is connected with the input end of the main chip U0, and a chip U3B and a chip U2B are further connected between the decoding chip U1B and the main chip U0.
Preferably, the USB interface module is further included, and the USB interface module is electrically connected with the main chip U0.
Preferably, the system further comprises a data debugging interface module, and the data debugging interface module is electrically connected with the main chip U0.
Preferably, the remote control device further comprises a remote control interface module, and the remote control interface module is electrically connected with the main chip U0.
Preferably, the system further comprises a plug-in memory module electrically connected with the main chip U0.
Preferably, the power supply module is electrically connected with the main chip U0 and comprises a 3.3V input circuit, a 1.8V input circuit and a 1.2V input circuit.
The utility model discloses a DTMB high definition digital set-top box with wiFi function, external antenna ANT1 receives outside audio and video signal and then feeds back to demodulation circuit, demodulation circuit demodulates received audio and video, convert intermediate frequency audio and video signal and transmit for main chip U0, main chip U0 decodes intermediate frequency audio and video signal, audio/video signal after decoding is exported by high definition output interface module and audio/video output interface piece. Because the utility model discloses increased the wiFi module, can be with the same network of being connected with the cell-phone simultaneously, consequently, the utility model discloses can throw the screen through cell-phone with screen or DLNA, project the video signal on the cell-phone to the STB, show for the TV set through HDMI or CVBS signal output. The mobile phone projects the audio and video signals on the mobile phone to the set top box through a multi-screen interaction option, or the mobile phone and the set top box are connected to the same WIFI network, and the audio and video signals on the mobile phone are projected to the set top box through a DLNA screen projection option in a mobile phone video APP.
Drawings
fig. 1 is a schematic diagram of a module structure of a DTMB high-definition digital set-top box with a WiFi function of the present invention.
Fig. 2 is a schematic structural diagram of the main chip U0 of the main control module of the DTMB high-definition digital set-top box with the WiFi function of the present invention.
Fig. 3 is a schematic structural diagram of the main chip U0 of the main control module of the DTMB high-definition digital set-top box with the WiFi function of the present invention.
Fig. 4 is a schematic structural diagram of the main chip U0 of the main control module of the DTMB high-definition digital set-top box with the WiFi function of the present invention.
Fig. 5 is a schematic structural diagram of the main chip U0 of the main control module of the DTMB high-definition digital set-top box with the WiFi function of the present invention.
Fig. 6 is a schematic structural diagram of a WiFi module of a DTMB high definition digital set top box with WiFi function of the present invention.
Fig. 7 is a schematic structural diagram of an audio/video receiving module of a DTMB high-definition digital set-top box with a WiFi function of the present invention.
Fig. 8 is a schematic structural diagram of a USB interface module of a DTMB high-definition digital set-top box with a WiFi function of the present invention.
fig. 9 is a schematic structural diagram of an audio/video output interface module of a DTMB high-definition digital set-top box with a WiFi function of the present invention.
Fig. 10 is a schematic structural diagram of an audio/video output interface module of a DTMB high-definition digital set-top box with a WiFi function of the present invention.
Fig. 11 is a schematic structural diagram of an audio/video output interface module of a DTMB high-definition digital set-top box with a WiFi function of the present invention.
Fig. 12 is a schematic structural diagram of a high definition output interface module of a DTMB high definition digital set top box with WiFi function.
Detailed Description
The invention will be further elucidated and described with reference to the following embodiments and drawings in which:
Referring to fig. 1, a DTMB high-definition digital set-top box with WiFi function includes a main control module, which includes a main chip U0, and further includes an audio/video receiving module, a CA encryption module, a high-definition output interface module, an audio/video output interface module, a WiFi module, and a DDR3 memory U1D, which are electrically connected to the main control module. The DDR3 memory U1D model is NT5CC64M16GP-D1, improves the fortune and deposits the assurance the utility model discloses still can run fast after using for a long time.
Referring to fig. 2, 3, 4 and 5, the main control module includes a main chip U0, the main chip U0 is model 2610HB, and the main chip U0 includes three parts, which are divided into U0A, U0B, U0C and U0D. The master chip U0 supports H.265 decoding, H.264 decoding, AVS + decoding, AVS decoding, MPEG decoding.
Referring to fig. 7, the audio/video receiving module includes a decoding circuit and a demodulation circuit, an input end of the demodulation circuit is connected to an external antenna ANT1, an output end of the demodulation circuit is connected to an input end of the decoding circuit, and an output end of the decoding circuit is connected to a main chip U0 of the main control module.
Specifically, the demodulation circuit comprises a tuning chip U1T, the tuning chip U1T is of a type Si2141, the pin 20 and the pin 22 of the tuning chip U1T are connected to the external antenna ANT1, and the pin 2, the pin 3, the pin 5, the pin 10 and the pin 11 of the tuning chip U1T are connected to the decoding circuit. The decoding circuit comprises a decoding chip U1B, the model of the decoding chip U1B is Hi3308D, the pin 3 of the decoding chip U1B is connected with the pin 11 of the tuning chip U1T, the pin 4 of the decoding chip U1B is connected with the pin 10 of the tuning chip U1T, and the pin 126, the pin 125 and the pin 123 of the decoding chip U1B are respectively connected with the pin 2, the pin 3 and the pin 5 of the tuning chip U1T. The output end of the decoding chip U1B is connected with the input end of the main chip U0, a chip U3B and a chip U2B are further connected between the decoding chip U1B and the main chip U0, the model of the chip U3B is EM636165TS-6G, and the model of the chip U2B is W9864G6 JH-6.
Referring to fig. 6, the WiFi module includes a wireless chip U12, a pin 5 of the wireless chip U12 is a power supply input end, the pin 5 of the wireless chip U12 is connected in series with a resistor R15F, the other end of the resistor R15F is connected to a power supply end, a capacitor C9F1 and a capacitor E1F1 are further connected in parallel between the pin 5 of the wireless chip U12 and the resistor R15F, the pin 6 and the pin 7 of the wireless chip U12 are connected to the main chip U0, the pin 2 of the wireless chip U12 is connected to an interface J3G1, and an inductor R4G1 is further connected in series between the pin 2 of the wireless chip U12 and the interface J3G 1.
Referring to fig. 9, 10, 11 and 12, the high definition output interface module includes an interface J4F, and the audio/video output interface module includes an interface J7F, and further includes a chip U3F and a chip U5F connected to the interface J7F. The high-definition output interface module is used for transmitting the audio/video signals to a television or a display screen for playing.
The main chip U0 is also connected with a plug-in storage module and a digital display tube/key module. The plug-in storage module is used for storing information and improving the storage, and the digital display tube/key module is convenient for a user to carry out manual operation.
Referring to fig. 8, the USB interface module is electrically connected to the main chip U0, and includes an interface J1F and an interface J3F. The USB interface module is used for transmitting data.
the main chip U0 is connected with a data debugging interface module, and the data debugging interface module is electrically connected with the main chip U0. The data debugging interface module is used for debugging internal data parameters.
The main chip U0 is further connected with a remote control interface module, and the remote control interface module is electrically connected with the main chip U0. The remote control interface module is convenient for remote control.
The main chip U0 still is connected with power module, and power module external 5V voltage then provides 3.3V, 1.8V, 1.2V voltage for each module and chip through the step-down, guarantees that each module and each chip are stable carries out work.
The utility model discloses a DTMB high definition digital set-top box with wiFi function, external antenna ANT1 receives outside audio and video signal and then feeds back to demodulation circuit, demodulation circuit demodulates received audio and video, convert intermediate frequency audio and video signal and transmit for main chip U0, main chip U0 decodes intermediate frequency audio and video signal, audio/video signal after decoding is exported by high definition output interface module and audio/video output interface piece. Because the utility model discloses increased the wiFi module, can be with the same network of being connected with the cell-phone simultaneously, consequently, the utility model discloses can throw the screen through cell-phone with screen or DLNA, project the video signal on the cell-phone to the STB, show for the TV set through HDMI or CVBS signal output. The mobile phone projects the audio and video signals on the mobile phone to the set top box through a multi-screen interaction option, or the mobile phone and the set top box are connected to the same WIFI network, and the audio and video signals on the mobile phone are projected to the set top box through a DLNA screen projection option in a mobile phone video APP. The utility model discloses support H.265 to decode, H.264 decodes, AVS + decodes, AVS decodes, MPEG decodes. Supports multiple audio formats such as MP3, AC-3, WMA, AAC, DTS and the like. The system supports the broadcasting and television digital television management system and can receive and watch local broadcasting and television encrypted television programs.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a DTMB high definition digital set-top box with wiFi function which characterized in that: the device comprises a main control module, wherein the main control module comprises a main chip U0, and further comprises an audio and video receiving module, a CA encryption module, a high-definition output interface module, an audio/video output interface module, a WiFi module and a DDR3 memory U1D which are electrically connected with the main control module;
The audio and video receiving module comprises a decoding circuit and a demodulation circuit, wherein the input end of the demodulation circuit is connected with an external antenna ANT1, the output end of the demodulation circuit is connected with the input end of the decoding circuit, and the output end of the decoding circuit is connected with a main chip U0 of the main control module;
The WiFi module comprises a wireless chip U12, and the wireless chip U12 is electrically connected with the main chip U0.
2. The WiFi-enabled DTMB high-definition digital set-top box of claim 1, wherein: the pin 5 of the wireless chip U12 is a power supply input end, the pin 5 of the wireless chip U12 is connected with a resistor R15F in series, the other end of the resistor R15F is connected with a power supply end, the pin 5 of the wireless chip U12 is connected with a resistor R15F through a capacitor C9F1 and a capacitor E1F1 in parallel, and the pin 6 and the pin 7 of the wireless chip U12 are connected with the main chip U0.
3. The WiFi-enabled DTMB high definition digital set top box of claim 2, wherein: the pin 2 of the wireless chip U12 is connected with an interface J3G1, and an inductor R4G1 is also connected in series between the pin 2 of the wireless chip U12 and the interface J3G 1.
4. The WiFi-enabled DTMB high-definition digital set-top box of claim 1, wherein: the demodulation circuit comprises a tuning chip U1T, and the pin 20 and the pin 22 of the tuning chip U1T are connected with the external antenna ANT 1.
5. The WiFi-enabled DTMB high definition digital set top box of claim 4, wherein: the decoding circuit comprises a decoding chip U1B, wherein a pin 3 of the decoding chip U1B is connected with a pin 11 of the tuning chip U1T, a pin 4 of the decoding chip U1B is connected with a pin 10 of the tuning chip U1T, a pin 126, a pin 125 and a pin 123 of the decoding chip U1B are respectively connected with a pin 2, a pin 3 and a pin 5 of the tuning chip U1T, an output end of the decoding chip U1B is connected with an input end of the main chip U0, and a chip U3B and a chip U2B are further connected between the decoding chip U1B and the main chip U0.
6. The WiFi-enabled DTMB high-definition digital set-top box of claim 1, wherein: the USB interface module is electrically connected with the main chip U0.
7. The WiFi-enabled DTMB high-definition digital set-top box of claim 1, wherein: the device also comprises a data debugging interface module, wherein the data debugging interface module is electrically connected with the main chip U0.
8. The WiFi-enabled DTMB high-definition digital set-top box of claim 1, wherein: the remote control device also comprises a remote control interface module which is electrically connected with the main chip U0.
9. The WiFi-enabled DTMB high-definition digital set-top box of claim 1, wherein: the device also comprises a plug-in storage module which is electrically connected with the main chip U0.
10. The WiFi-enabled DTMB high-definition digital set-top box of claim 1, wherein: the power supply module is electrically connected with the main chip U0 and comprises a 3.3V input circuit, a 1.8V input circuit and a 1.2V input circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581799.6U CN209805990U (en) | 2019-04-26 | 2019-04-26 | DTMB high-definition digital set-top box with WiFi function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581799.6U CN209805990U (en) | 2019-04-26 | 2019-04-26 | DTMB high-definition digital set-top box with WiFi function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209805990U true CN209805990U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920581799.6U Expired - Fee Related CN209805990U (en) | 2019-04-26 | 2019-04-26 | DTMB high-definition digital set-top box with WiFi function |
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| Country | Link |
|---|---|
| CN (1) | CN209805990U (en) |
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- 2019-04-26 CN CN201920581799.6U patent/CN209805990U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 Termination date: 20210426 |
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| CF01 | Termination of patent right due to non-payment of annual fee |