CN204481981U - A kind of projection satellite set top box with USB interface - Google Patents
A kind of projection satellite set top box with USB interface Download PDFInfo
- Publication number
- CN204481981U CN204481981U CN201520174028.7U CN201520174028U CN204481981U CN 204481981 U CN204481981 U CN 204481981U CN 201520174028 U CN201520174028 U CN 201520174028U CN 204481981 U CN204481981 U CN 204481981U
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- module
- master chip
- interface
- usb interface
- video data
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Abstract
The utility model discloses a kind of projection satellite set top box with USB interface, by master chip, DDR and FALSH module composition microsystem; DVBS2 TUNER module, key-press module are connected with master chip input with remote control reception module; Master chip exports with UART interface, audio amplification block and digital audio interface and is connected; Described audio amplification block exports with boombox and analog audio interface and is connected; Master chip drives with DDR, FLASH module, USB interface, video data conversion chip, ray machine LED and LED radiating module double-fed is connected; Video data conversion chip, ray machine LED drive and are connected with bare engine module double-fed with LED radiating module.The utility model, can circumscribed USB equipment by arranging USB interface, and can play the multimedia file in USB device, realizes the function of multimedia player.There is Data Format Transform function, improve data transmission stability and anti-interference, can directly output video data to bare engine module.
Description
Technical field
The utility model relates to a kind of Set Top Box, specifically a kind of projection satellite set top box with USB interface.
Background technology
The existing family equipment that watches TV is all television set substantially, also has a kind of projection TV set of accessible satellite-signal.But function is only limitted to watch satellite television, can not access USB flash disk equipment, to play the audio/video file of user oneself.Satellite set top box module and the signal be connected between projector module of existing projection TV set are composite video, RGB/BT656 digital video or HDMI high-definition video signal and voice signal, do not have format conversion process.
Utility model content
The purpose of this utility model is to provide a kind of projection satellite set top box with USB interface, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
With a projection satellite set top box for USB interface, by master chip, DDR and FALSH module composition microsystem; DVBS2 TUNER module, key-press module are connected with master chip input with remote control reception module; Master chip exports with UART interface, audio amplification block and digital audio interface and is connected; Master chip drives with DDR, FLASH module, USB interface, video data conversion chip, ray machine LED and LED radiating module double-fed is connected; Video data conversion chip, ray machine LED drive and are connected with bare engine module double-fed with LED radiating module.
As further program of the utility model: described audio amplification block exports with boombox and analog audio interface and is connected.
Compared with prior art, the beneficial effects of the utility model are: the utility model, can circumscribed USB equipment by arranging USB interface, and can play the multimedia file in USB device, realizes the function of multimedia player.The signal transmitted between the master chip of satellite receiver of the present utility model and bare engine module has Data Format Transform process, what master chip exported is HDMI signal, change to LVDS(RGB888 or RGB666 through conversion chip) the signal input optic machine module of form, improve transmission speed.
Accompanying drawing explanation
Fig. 1 is inner entire block diagram of the present utility model.
Fig. 2 is practical application block diagram of the present utility model.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1 ~ 2, a kind of projection satellite set top box with USB interface, by master chip, DDR and FALSH module composition microsystem; DVBS2 TUNER module, key-press module are connected with master chip input with remote control reception module; Master chip exports with UART interface, audio amplification block and digital audio interface and is connected; Master chip drives with DDR, FLASH module, USB interface, video data conversion chip, ray machine LED and LED radiating module double-fed is connected; Video data conversion chip, ray machine LED drive and are connected with bare engine module double-fed with LED radiating module.
Further, audio amplification block described in the utility model exports with boombox and analog audio interface and is connected.
Operation principle of the present utility model is:
The microsystem that master chip (CPU), DDR and FALSH module composition are the most basic, can run the operating systems such as Android, Ecos, Linux.Key-press module and infrared receiving module are used for man-machine interaction, manipulate this equipment.UART interface is used for the software of updating apparatus and data, carries out software function debugging.The part of satellite TV receiver is completed by DVBS2 TUNER module and master chip (CPU).Wherein DVBS2 TUNER is electronic tuning unit, exports intermediate-freuqncy signal to master chip, after master chip AD collection, demodulation, demultiplexing, audio/video decoding resume module, through HDMI and the CVBS interface output sound video data of master chip.
The function of multimedia player is completed by USB interface and master chip (CPU), and USB interface can external various standard compliant disk unit, comprises USB flash disk, the CD-ROM equipment of portable hard drive and USB interface.Master chip can read the multimedia file in the USB device of user, then enters the audio/video decoding of master chip, through HDMI and the CVBS interface output sound video data of master chip.
The image display function of conventional television is completed by video data conversion chip, bare engine module, ray machine LED driving and LED radiating module.Video data conversion chip is converted to bare engine module acceptable LVDS(RGB888 or RGB666 the HDMI formatted data that master chip (CPU) exports) signal.Ray machine LED drive module provides stable electric current for LED, can adjust electric current to reach the object of adjustment projection brightness in certain limit simultaneously.LED radiating module comprises fin and fan and temperature sensor, is regulated the rotating speed of fan to reach energy-conservation by the temperature of monitoring LED and device housings inside and is reduced the object of noise.Bare engine module LVDS signal through video decode and optical imaging system, image projection on wall curtain.
Sound-playing function is completed by built-in audio amplification module and boombox.Audio signal delivers to boombox or external voice box after audio amplification block drives.Or master chip outputting digital audio, delivers to external speaker after external device decoding and amplification.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned execution mode, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (2)
1. the projection satellite set top box with USB interface, is characterized in that: by master chip, DDR and FALSH module composition microsystem; DVBS2 TUNER module, key-press module are connected with master chip input with remote control reception module; Master chip exports with UART interface, audio amplification block and digital audio interface and is connected; Master chip drives with DDR, FLASH module, USB interface, video data conversion chip, ray machine LED and LED radiating module double-fed is connected; Video data conversion chip, ray machine LED drive and are connected with bare engine module double-fed with LED radiating module.
2. a kind of projection satellite set top box with USB interface according to claim 1, is characterized in that: described audio amplification block exports with boombox and analog audio interface and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520174028.7U CN204481981U (en) | 2015-03-26 | 2015-03-26 | A kind of projection satellite set top box with USB interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520174028.7U CN204481981U (en) | 2015-03-26 | 2015-03-26 | A kind of projection satellite set top box with USB interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204481981U true CN204481981U (en) | 2015-07-15 |
Family
ID=53637750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520174028.7U Expired - Fee Related CN204481981U (en) | 2015-03-26 | 2015-03-26 | A kind of projection satellite set top box with USB interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204481981U (en) |
-
2015
- 2015-03-26 CN CN201520174028.7U patent/CN204481981U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20160326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |