CN207184727U

CN207184727U - Terrestrial DTV intelligent gateway

Info

Publication number: CN207184727U
Application number: CN201721189704.3U
Authority: CN
Inventors: 吕毅
Original assignee: Finger Young Media Co Ltd
Current assignee: Finger Young Media Co Ltd
Priority date: 2017-09-15
Filing date: 2017-09-15
Publication date: 2018-04-03
Anticipated expiration: 2027-09-15

Abstract

The utility model belongs to intelligent gateway technical field,Provide a kind of terrestrial DTV intelligent gateway,Including antenna,DTMB demodulators,CDR demodulators,Memory,Arbitration circuit,GPRS module,Controller and WiFi module,Antenna,DTMB demodulators and controller are sequentially connected,For receiving,Demodulation protocol processes DTMB signals are the digital television signal for meeting predetermined protocol form,Antenna,CDR demodulators and controller are sequentially connected,CDR demodulators are realized using programmable gate array,Memory is connected with controller,Arbitration circuit judges end and gating end provided with access originator,Access originator judges that end is connected to controller,Gating end is connected to memory,Antenna,GPRS module and controller are sequentially connected,Can request program table and transmission user's request program for receiving,WiFi module is connected with controller.The utility model provides a kind of terrestrial DTV intelligent gateway, can effectively be stored the DTMB signals of reception and CDR signals by hardware circuit, and realize a multicast function.

Description

Terrestrial DTV intelligent gateway

Technical field

It the utility model is related to intelligent gateway technical field, and in particular to a kind of terrestrial DTV intelligent gateway.

Background technology

Terrestrial DTV is radiovision, can provide TV letter for the area that no cable TV network covers Number, and TV signal etc. is provided for mobile terminal such as vehicle-mounted digital television, meet standard No. GB20600-2006 standard, i.e., Digital television ground broadcast transmission system frame structure, Channel Coding and Modulation, English full name are Digital Television Terrestrial Multimedia Broadcasting, referred to as DTMB.But in actual application, ground digital electricity Depending on also all kinds of corrupt practices creep in, the program such as broadcasted is limited by broadcast time, user can not program request want the TV programme seen.In meanwhile State's digital audio broadcasting (China Digital Radio, abbreviation CDR) is also progressively being promoted, if equipment, which does not possess, receives CDR letters Number function, will also be made troubles to a certain extent to daily life.

How the DTMB signals of reception and CDR signals effectively to be stored by hardware circuit, and realize a multicast function, be this The problem of art personnel's urgent need to resolve.

Utility model content

For in the prior art the defects of, the hardware that the utility model provides a kind of terrestrial DTV intelligent gateway is realized Circuit, the DTMB signals of reception and CDR signals can effectively be stored, and realize a multicast function.

The utility model provides a kind of terrestrial DTV intelligent gateway, including：Antenna, DTMB demodulators, CDR demodulation Device, memory, arbitration circuit, GPRS module, controller and WiFi module, antenna, DTMB demodulators and controller are sequentially connected, For receiving, demodulation protocol processes DTMB signals be the digital television signal for meeting predetermined protocol form, antenna, CDR demodulation Device and controller are sequentially connected, for receiving, demodulation change CDR signals as digital audio broadcasting signal, CDR demodulators use Programmable gate array realizes that memory is connected with controller, and arbitration circuit judges end and gating end provided with access originator, and access originator is sentenced The broken ends of fractured bone is connected to controller, and gating end is connected to memory, and controller control arbitration circuit chooses the different memory areas of memory Domain, to preserve corresponding with storage region digital television signal and digital audio broadcasting signal, antenna, GPRS module and controller It is sequentially connected, request program table and user's request program can be sent for receiving, WiFi module is connected with controller, is used for Digital television signal and digital audio broadcasting signal are distributed.

Further, controller is provided with ddr interface, connects dual-magnification technique synchronous DRAM, and memory includes double Multiplying power synchronous DRAM.

Based on above-mentioned any terrestrial DTV intelligent gateway embodiment, further, controller is provided with SPI interface, even FLASH flash cards are connect, memory includes FLASH flash cards.

Based on above-mentioned any terrestrial DTV intelligent gateway embodiment, further, the present embodiment terrestrial DTV Intelligent gateway also includes power module, power module and antenna, DTMB demodulators, CDR demodulators, memory, arbitration circuit, GPRS module, controller connect with WiFi module.

Based on above-mentioned any terrestrial DTV intelligent gateway embodiment, further, controller is provided with PCIe interface, WiFi module is connected to PCIe interface.

Further, controller is additionally provided with jtag interface, jtag interface connection debugging maintenance module.

Based on above-mentioned any terrestrial DTV intelligent gateway embodiment, further, antenna includes terrestrial DTV Signal receiving antenna, digital audio broadcasting signal reception antenna and GPRS antenna, ground digital television signal reception antenna with DTMB demodulators are connected, and digital audio broadcasting signal reception antenna is connected with CDR demodulators, and GPRS antenna connects with GPRS module Connect.

Further, arbitration circuit includes model MAX II CPLD EPM240 chips.

Further, DTMB demodulators include model ATBM8846E chip.

As shown from the above technical solution, the utility model terrestrial DTV intelligent gateway can receive DTMB by antenna Signal and CDR signals, two kinds of signals are demodulated by processing by DTMB demodulators, CDR demodulators, are sent to controller, controlled Device processed is distributed by WiFi module by the way that the signal of reception is carried out into protocol conversion process, and user terminal can receive, wherein, CDR demodulators are realized using programmable gate array, to improve the compatibility of the device interior runtime.Need to preserve in user During information, controller can set the access originator of arbitration circuit to judge end level state, and gating end can choose memory different Storage location, digital television signal and the digital audio broadcasting signal storage location in memory after control demodulation is real Store function is now total to, saves memory space.Meanwhile user is also with by GPRS module, reception can request program table, put broadcasting user Required program, and sent by antenna, you can the program needed for preserving is being downloaded, user can not be by broadcast time Limitation, improve the degree of flexibility that user uses.

Therefore, the utility model terrestrial DTV intelligent gateway, DTMB signals and CDR can be received by hardware circuit Signal, stored using common storage mode, meanwhile, realize point multicast function, there is provided equipment using flexible degree, it is empty to save storage Between.

Brief description of the drawings

, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art.In all of the figs, it is similar Element or part are typically identified by similar reference.In accompanying drawing, each element or part might not be according to the ratios of reality Draw.

Fig. 1 shows that the utility model provides a kind of structural representation of terrestrial DTV intelligent gateway；

Fig. 2 shows that the utility model provides the part-structure schematic diagram of another terrestrial DTV intelligent gateway.

Embodiment

The embodiment of technical solutions of the utility model is described in detail below in conjunction with accompanying drawing.Following examples are only For clearly illustrating the technical solution of the utility model, therefore example is intended only as, and this reality can not be limited with this With new protection domain.

It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this reality The ordinary meaning understood with new one of ordinary skill in the art.

The utility model provides a kind of terrestrial DTV intelligent gateway, with reference to Fig. 1, including antenna 1, DTMB demodulators 2, CDR demodulators 3, memory 4, arbitration circuit 5, GPRS module 6, controller 7 and WiFi module 8, antenna 1, the and of DTMB demodulators 2 Controller 7 is sequentially connected, for receiving, demodulation protocol processes DTMB signals be meet predetermined protocol form DTV letter Number, antenna 1, CDR demodulators 3 and controller 7 are sequentially connected, for receiving, demodulation change CDR signals as digital audio broadcasting Signal, CDR demodulators 3 realize that memory 4 is connected with controller 7, and arbitration circuit 5 is provided with access originator using programmable gate array Judge end and gating end, access originator judges that end is connected to controller 7, and gating end is connected to memory 4, the control arbitration of controller 7 Circuit 5 chooses the different storage zone of memory 4, wide to preserve corresponding with storage region digital television signal and DAB Broadcast signal, antenna 1, GPRS module 6 and controller 7 are sequentially connected, for receive can request program table and send user order Program is broadcast, WiFi module 8 is connected with controller 7, for digital television signal and digital audio broadcasting signal to be distributed.

As shown from the above technical solution, the present embodiment terrestrial DTV intelligent gateway can receive DTMB letters by antenna Number and CDR signals, two kinds of signals are demodulated by processing by DTMB demodulators 2, CDR demodulators 3, are sent to controller 7, control Device 7 processed is converted into the data message for meeting 802.11a/b protocol formats by the way that the signal of reception is carried out into protocol conversion process, It is distributed by WiFi module 8, user terminal can receive, wherein, CDR demodulators 3 are realized using programmable gate array, to improve The compatibility of the device interior runtime.When user needs to preserve information, controller 7 can set the visit of arbitration circuit 5 The source of asking judges end level state, and gating end can choose the different storage location of memory 4, the DTV letter after control demodulation Number and storage location of the digital audio broadcasting signal in memory 4, realize altogether store function, save memory space.Meanwhile use Family also with by GPRS module 6, reception can request program table, put the program needed for broadcasting user, and send by antenna, i.e., The program needed for preserving can be being downloaded, user can not be limited by broadcast time, improve the degree of flexibility that user uses.

Therefore, the present embodiment terrestrial DTV intelligent gateway, DTMB signals can be received by hardware circuit and CDR believes Number, stored using common storage mode, meanwhile, realize point multicast function, there is provided equipment using flexible degree, save memory space.

In order to further improve storage efficiency, memory space is saved, the present embodiment terrestrial DTV intelligent gateway is in reality During existing information storage, arbitration circuit 5 specifically being set into access originator and judges end and gating end, access originator judges that end is connected to controller 7, Gating end is connected to memory 4, and controller 7 sets access originator to judge end for the first level, and arbitration circuit 5 chooses memory 4 Digital television signal is stored in the first memory block by the first memory block, controller 7, and controller 7 also sets up access originator and judges that end is Second electrical level, arbitration circuit 5 choose the second memory block of memory 4, and digital audio and video signals are stored in the second storage by controller 7 Area.It judges access originator by arbitration circuit 5, and controller 7 can judge access originator end is arranged to different level states, with Different storage regions is chosen, realizes that unlike signal stores, the above-mentioned common store function by arbitration circuit and controller realization is The common method of those skilled in the art, both saves memory space, and and can enough ensures effective storage of information.

Specifically, controller 7 is provided with ddr interface, connects dual-magnification technique synchronous DRAM, and controller 7 is additionally provided with SPI interface, FLASH flash cards are connected, realize flash storage data, controller 7 is additionally provided with EMMC interfaces, it would be preferable to support NAND FLASH and NOR FLASH flash cards, the present embodiment terrestrial DTV intelligent gateway set abundant peripheral interface, with convenient User uses.

In order to further improve the operating efficiency of the terrestrial DTV intelligent gateway, specifically, the gateway also includes Power module, power module and antenna 1, DTMB demodulators 2, CDR demodulators 3, memory 4, arbitration circuit 5, GPRS module 6, Controller 7 and WiFi module 8 connect, and are antenna 1, DTMB demodulators 2, CDR demodulators 3, memory 4, arbitration circuit 5, GPRS Module 6, controller 7 and WiFi module 8 provide electric flux.Its power module is powered after can line voltage be changed, also Electric flux can be stored, in extraneous power supply abnormal electrical power supply, electric flux is provided for modules.

Specifically, controller 7 is provided with PCIe interface, and WiFi module 8 is connected to PCIe interface, by WiFi module 8 by number Word TV signal is transmitted, user can where just reception signal in office position watching video.Controller 7 is additionally provided with JTAG and connect Mouthful, jtag interface connection debugging maintenance module.Commissioning staff can carry out equipment debugging in debugging maintenance module, functional parameter is set Deng being easy to the steady operation of maintained equipment.

Specifically, with reference to Fig. 2, antenna includes ground digital television signal reception antenna 11, digital audio broadcasting signal connects Receive antenna 12 and GPRS antenna 13, ground digital television signal reception antenna 11 are connected with DTMB demodulators 2, digital audio broadcasting Signal receiving antenna 12 is connected with CDR demodulators 3, and GPRS antenna 13 is connected with GPRS module 6.Antenna is arranged to ground digital electricity Depending on signal receiving antenna 11, digital audio broadcasting signal reception antenna 12 and GPRS antenna 13, multi-signal can be received and dispatched, and adopt Carry out signal transacting with corresponding processing module, improve the degree of flexibility of the terrestrial DTV intelligent gateway, can adapt in A variety of application places, are user-friendly.

Specifically, DTMB demodulators 2 use model ATBM8846E chip, and the chip can also support DVB-C signals Demodulation, there is high sensitivity, strong antijamming capability, and compatibility is relatively good, is widely used.

Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly The scope of each embodiment technical scheme of type, it all should cover among claim of the present utility model and the scope of specification.

Claims

A kind of 1. terrestrial DTV intelligent gateway, it is characterised in that including：

Antenna, DTMB demodulators, CDR demodulators, memory, arbitration circuit, GPRS module, controller and WiFi module,

The antenna, the DTMB demodulators and the controller are sequentially connected, for receiving, demodulation protocol processes DTMB letter Number it is to meet the digital television signal of predetermined protocol form,

The antenna, the CDR demodulators and the controller are sequentially connected, for receiving, demodulation conversion CDR signals be number Word audio broadcast signal, the CDR demodulators using programmable gate array realize,

The memory is connected with the controller, and the arbitration circuit judges end and gating end, the access provided with access originator Source judges that end is connected to the controller, and the gating end is connected to the memory, the controller control arbitration electricity The different storage zone of the memory is chosen on road, to preserve the digital television signal corresponding with storage region and the number Word audio broadcast signal,

The antenna, the GPRS module and the controller are sequentially connected, can request program table and transmission use for receiving Family request program,

The WiFi module is connected with the controller, for by the digital television signal and the digital audio broadcasting signal It is distributed.
2. terrestrial DTV intelligent gateway according to claim 1, it is characterised in that

The controller is provided with ddr interface, connects dual-magnification technique synchronous DRAM, and the memory includes described double Rate synchronous DRAM.
3. terrestrial DTV intelligent gateway according to claim 1 or claim 2, it is characterised in that

The controller is provided with SPI interface, connects FLASH flash cards, and the memory includes the FLASH flash cards.
4. terrestrial DTV intelligent gateway according to claim 1, it is characterised in that also include：Power module, the electricity It is source module and the antenna, the DTMB demodulators, the CDR demodulators, the memory, the arbitration circuit, described GPRS module, the controller connect with the WiFi module.
5. terrestrial DTV intelligent gateway according to claim 1, it is characterised in that

The controller is provided with PCIe interface, and the WiFi module is connected to the PCIe interface.
6. according to the terrestrial DTV intelligent gateway of claim 1 or 5, it is characterised in that

The controller is additionally provided with jtag interface, and the jtag interface connects debugging maintenance module.
7. terrestrial DTV intelligent gateway according to claim 1, it is characterised in that

The antenna includes ground digital television signal reception antenna, digital audio broadcasting signal reception antenna and GPRS antenna, The ground digital television signal reception antenna is connected with the DTMB demodulators, the digital audio broadcasting signal reception antenna It is connected with the CDR demodulators, the GPRS antenna is connected with the GPRS module.
8. terrestrial DTV intelligent gateway according to claim 1, it is characterised in that

The arbitration circuit includes model MAX II CPLD EPM240 chips.
9. terrestrial DTV intelligent gateway according to claim 1, it is characterised in that

The DTMB demodulators include model ATBM8846E chip.