CN103297825B - One kind realizes terrestrial DTV multimedia portable terminal - Google Patents
One kind realizes terrestrial DTV multimedia portable terminal Download PDFInfo
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- CN103297825B CN103297825B CN201210044993.3A CN201210044993A CN103297825B CN 103297825 B CN103297825 B CN 103297825B CN 201210044993 A CN201210044993 A CN 201210044993A CN 103297825 B CN103297825 B CN 103297825B
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Abstract
The invention discloses one kind to realize terrestrial DTV multimedia portable terminal, based on DVB T standards, carry the portable terminal of small-medium size LCD (7 cun to 12 cun), cooperated using two processors, under different mode of operations, the institute for realizing existing set top box is functional, possesses existing radio TV signals receiving processing display function, USB is provided, the multimedia function of Ethernet interfaces, it is not necessarily to be sitting in face of television set using user's TV reception of the present invention, it is fixed, the mobile and hand-held digital television program that can watch high quality, it is convenient, flexible；Further, since having used multiprocessor, function potentiality are big, and user can also enjoy other multimedia recreation functions while highlight function is obtained.
Description
Technical field
The present invention relates to digital TV technology, is to be related to one kind to realize the more matchmakers of terrestrial DTV in particular
Body portable terminal.
Background technology
With the popularization and development of DTV cause, there is panoramic set top box in the market, these set top boxes
Design be only limitted to function and outward appearance, general user watches terrestrial DTV section by way of set top box connects television set
Mesh, that is, the reception decoding of digital television signal are completed by set top box, and audio frequency and video are shown by television set complete independently.But with
The popularization of DTV, the concept of digital TV integrated machine is proposed, set top box is integrated into television body, it is simplified
Input, output interface, reduce unnecessary software and hardware so that compact-sized, system effectiveness is high；All-in-one is substantially exactly machine top
The assembly of box and television set, the reception decoding of digital television signal and audio and video playing are no longer handled with absolute version, these
Work is performed integrally by an all-in-one.But for the terrestrial broadcasting of broadcast type transmission, it is impossible to play it is easy-to-use, receive it is convenient excellent
Gesture, also do not develop convenience devices.
CMMB (China Mobile Multimedia Broadcasting, the more matchmakers of China Mobile that China is promoted
Body radio and television), mobile TV is commonly called as, is uniquely to be promulgated to move for the independent intellectual property right of professional standard by SARFT(The State Administration of Radio and Television)
Multimedia broadcasting is marked, and the broadcast of the multi-media signals such as TV, broadcast and data message is launched by satellite and/or terrestrial wireless
System, although can admirably solve the problems, such as that mobile terminal receives digital broadcast television program, terminal market is just for reception
Terminal screen is small (less than 7 cun), the ropy problem of display picture on giant-screen.
With the development of multimedia technology, the maturation of consumption electronic product market, user is to that can provide more multimedias
The product demand of business is more and more stronger, accordingly, it is desirable to provide one kind is convenient, can watch high definition broadcasts TV and support more
The product of media business is those skilled in the art's urgent problem to be solved.
The content of the invention
In view of this, the invention provides one kind to realize terrestrial DTV multimedia portable terminal, existing to overcome
Due to a branch of the existing all-in-one as television set in technology, develop to large scale direction, do not account for user's shifting
Dynamic easily demand, and CMMB can not provide high definition, terminal market is just for 7 cun of mobile devices with sub-screen, then large scale
Screen-picture effect will be very poor the problem of.
To achieve the above object, the present invention provides following technical scheme：
One kind realizes terrestrial DTV multimedia portable terminal, based on DVB-T (DMB-Terrestrial, ground without
Line) standard, small-medium size LCD (7 cun to 12 cun) is carried, including：First processor and second processor；
The first processor is tv signal processor, embeds MCU (Micro Control Unit, microcontroller list
Member), for completing the decoding process to inputting audio-video signal, and play to LCD and loudspeaker, realize TV functions；
The second processor is the System on Chip/SoC of DTV, passes through the tuner for reception signal being attached thereto
Circuit and the smart card circuitry for being communicated with smart card, common to complete terrestrial DTV business, the tuner circuits pass through
Antenna receives radiofrequency signal and demodulates the serial stream of output transmission, and the second processor demultiplexes to receiving stream, and will utilize intelligence
The Voice ＆ Video data that energy card descrambled are given decoder and decoded, and the second processor is using video encoder by
The digital video signal of decoding is changed and played, and the second processor embeds USB and Ethernet controllers, by described
USB or described Ethernet interfaces, the second processor receive and handle multi-medium data；
The first processor and the second processor are each connected to FLASH, for the storage of respective program and parameter,
The first processor and the second processor are by the program designation in respective FLASH, the journey in respective independent operating FLASH
Sequence；
The first processor and the second processor are connected with E2PROM respectively by I1C buses, are used in conjunction with same
One E2PROM data storage, the data partition in the E2PROM are enjoyed, and shared data block agreement accesses；
The first processor has built-in RAM, and what the second processor connected is the RAM cores of the DDR2 interfaces of high speed
Piece；
The first processor and the second processor pass through YPBPR interfaces (color difference components interface) and GPIO interface
(universal input/output interface) is connected.
Wherein, the first processor is also connected with audio frequency and video input interface, audio frequency and video power amplifier, panel button and remote control
Device, serial ports and power distribution circuit.
Wherein, the FLASH of the first processor connection SPI interface, the second processor connection sdram interface
FLASH。
Wherein, described two processors can upgrade the program in the FLASH of oneself connection respectively.
Wherein, the first processor is primary processor, is responsible for completing mode of operation selection, power distribution management, battery
Management of charging and discharging, and button and the remote control processing of user's operation are received, filter out what oneself was used, by the second processor
That uses is sent to the second processor by the GPIO interface.
Wherein, the mode of operation is specially：Audio frequency and video input pattern, DTV mode of operation and audio frequency and video output mould
Formula, wherein：
The audio frequency and video input pattern is that the portable terminal does not work as display device, the second processor,
The first processor work, close what the second processor power supply was connected with it by the control of power configuration management module
Circuit；
The DTV mode of operation is that the portable terminal is set as the all-in-one of audio/video decoding and display,
The first processor and the second processor full-load operation, the first processor complete Digital TV Receiving decoding,
Video is shown on LCD by the second processor, is played after audio is amplified to loudspeaker；
The audio frequency and video output mode is equipment of the portable terminal as audio/video decoder, the audio frequency and video of reception
Data are not played by LCD and loudspeaker, are directly exported by the volume audio and video output interface being connected with the second processor,
The first processor closes LCD drive circuits, the second processor completes DTV by power configuration management module
All devices of function work on power.
Understood via above-mentioned technical scheme, compared with prior art, the invention discloses one kind to realize ground digital electricity
Depending on multimedia portable terminal, based on DVB-T standards, the portable terminal of small-medium size LCD (7 cun to 12 cun) is carried, is used
Two processors cooperate, and under different mode of operations, it is functional to realize the institute of existing set top box, possesses existing TV
Signal reception processing display function, there is provided the multimedia function of USB, Ethernet interface, watched TV using user of the present invention
Program is not necessarily to be sitting in face of television set, fixed, the mobile and hand-held digital television program that can watch high quality,
It is convenient, flexible；Further, since having used multiprocessor, function potentiality are big, and user may be used also while highlight function is obtained
To enjoy other multimedia recreation functions.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of Organization Chart for realizing terrestrial DTV multimedia portable terminal disclosed in the embodiment of the present invention；
Fig. 2 is a kind of flow chart of multimedia portable terminal switching working mode disclosed in the embodiment of the present invention；
Fig. 3 is a kind of operational data for realizing terrestrial DTV multimedia portable terminal disclosed in the embodiment of the present invention
Flow graph.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The invention discloses one kind to realize terrestrial DTV multimedia portable terminal, based on DVB-T standards, in carrying
Small size LCD (7 cun to 12 cun) portable terminal, cooperated using two processors, it is real under different mode of operations
It is functional to have showed the institute of existing set top box, has possessed existing radio TV signals receiving processing display function, there is provided USB, Ethernet connect
The multimedia function of mouth, is not necessarily to be sitting in face of television set using user's TV reception of the present invention, fixed, mobile
And the hand-held digital television program that can watch high quality, it is convenient, flexible；Further, since having used multiprocessor, function is dived
Power is big, and user can also enjoy other multimedia recreation functions while highlight function is obtained.
Accompanying drawing 1 is referred to, for the invention discloses a kind of structure for realizing terrestrial DTV multimedia portable terminal
Figure；One kind disclosed by the invention realizes terrestrial DTV multimedia portable terminal, specifically includes：
The present invention is cooperated using two processors, and wherein first processor 101 is tv signal processor, is embedded
MCU (Micro Control Unit, micro-control unit)；Support from PC (personal computer), field camera, GPS device
VGA (the Video Graphics Array, video figure of (Global Positioning System, global positioning system) output
Shape array) interface rgb signal (Red Green Blue, R-G-B signals)；Support conventional television apparatus or HDTV (High
Definition Television, HDTV) output YPBPR (color difference components interface), Y/C (component video), CVBS letter
Number (Composite Video Broadcast Signal, Composite Video Baseband Signal)；Support CCIR656 (ITU-R simultaneously
BT.656, Digital Interface Standard) numeral output；The video input standard that can be supported includes NTSC (National
Television System Committee, national television system standard), PAL (Phase Alternating Line, line by line
Alternating Line) and SECAM (Sequentiel Couleur A Memoire, forsequential color transmission and storage standard)；With liquid
Crystalline substance screen interface, supports TTL (Transistor-Transistor Logic, logic gates)/TCON (Timer Control
Register, Timer Controlling register) digital screen or simulation TCON screens；There is OSD (On-Screen Display simultaneously
On-screen menu), Scalar (video scaling) function.The first processor 101 that this programme uses embeds MCU, makes first processor
101 possess the ability of independent operating and control, coordinate itself OSD and Scalar function, at Control peripheral circuit and second
Device 102 is managed to coordinate to complete multiple-working mode described later in this programme；The support of liquid crystal interface, make this programme compact-sized, open
Hair is quick, stable performance；Abundant interface input form, multiple types automatic identification, make this programme product versatility, flexibility
It is not fully exerted.
Second processor 102 is the System on Chip/SoC of DTV, and processing high-resolution picture, sound are integrated with chip piece
It is functional with the institute needed for image, MPEG2 can be handled, H.264 with the compressed format such as VC-1, built-in USB2.0 master controls,
Ethernet controllers, and newest advanced security specification and abundant application can be supported.Use DDR2 interfaces and external memory storage
It is connected, stand-by power consumption, at full speed running operating power consumption all very littles.
Two processors are each connected to the storage that a FLASH is used for respective program and parameter.First processor 101 connects
The FLASH of SPI interface, second processor 102 connect the FALSH of sdram interface.After upper electricity, two processors are by each connecting
FLASH in program designation, respective independent operating connects the program in the FLASH of oneself, and two processors can divide
Do not upgrade the program in the FLASH of oneself connection.Two processors are used in conjunction with same E2PROM data storages, reduce cloth
Line and component.Two processors are connected with E2PROM using I2C buses, the data partition in E2PROM is enjoyed, shared
Data block agreement accesses.First processor 101 has built-in RAM, and without meeting RAM in addition, what second processor 102 connected is at a high speed
DDR2 interfaces RAM chip.
First processor 101 connects audio frequency and video input interface (VGA, YPBPR, Y/C, CVBS, CCIR656), audio frequency power amplifier
Process circuit, LCD, serial ports, panel button and remote control, power distribution management circuit, and pass through YPBPR interface (colors
Difference component interface) and GPIO (General Purpose Input Output universal inputs/output interface) and second processor
102 are connected.First processor 101 completes the decoding process to inputting audio-video signal, and plays to LCD and loudspeaker, realizes
TV functions；First processor 101 is used as primary processor, is responsible for completing mode of operation selection, power distribution management, battery charge and discharge
Fulgurite is managed；And button and the remote control processing of user's operation are received, filter out what oneself was used, second processor 102 is used
Second processor 102 is sent to by GPIO.The program in FLASH can be entered by the serial ports being connected on processor
Row upgrading.
First processor 101 can input a variety of audio-video sources, because interface panel space is limited, can only introduce a kind of sound
Video source, thus using configurable input form, needed to configure the side panel with distinct interface according to user.Software can be certainly
It is dynamic to adapt to, any hardware interface is configured, what equipment connected, software automatic discrimination is simultaneously arranged to such a input, in software and hardware not
In the case of dynamic, different user demands can be flexibly met.Form of power is various, and 110~250AC of standard configuration turns DC 10V1A
Power supply adaptor, can be used in the case where there is civil power, can use 10V the equipment such as direct current, automobile provide
12VDC can also be used.Built-in lithium battery is that Portable carrying supplies requirement, can provide the continuation of the journey working power of more than 4 hours,
Used in no civil power, undesirable or hand-held viewing of powering.Which power supply of the control selections of first processor 101, and fit
When to battery charge.Because mobile terminal uses battery powered, to improve the usage time of battery, terminal should be able to turn off one
Point receiving circuit is to save power consumption.Using a kind of multi-stage power source management, in specific operation mode, the mode of operation is not being influenceed
In the case of function, turn off without using partial power.
Second processor 102 is by being attached thereto for the tuner circuits of reception signal and for being communicated with smart card
Smart card circuitry, it is common to complete terrestrial DTV related service.Tuner receives radiofrequency signal by antenna and demodulated defeated
Go out the serial stream of transmission, second processor 102 demultiplexes to receiving stream, and the Voice ＆ Video data that will be descrambled using smart card
Give decoder to be decoded, second processor 102 is converted to decoded digital video signal using video encoder
YPbPr signals, send first processor 101 to and play out, or believed decoded digital video using video encoder
Number AV signals are converted to, export and played to miscellaneous equipment.Second processor 102 is connected to USB or Ethernet interfaces, passes through them
Second processor 102 receives and handles multi-medium data.
Tuner uses the silicon tuner of tuner and demodulator one, has smaller appearance and size, and higher
Sensitivity, built-in aerial and external antenna may be selected.
Scheme uses the Smart Card of Mini SIM sizes, and size meets ISO7810ID-000, and contact contact then meets
Regulations of the ISO 7816 to ID-1 type IC-cards.25 millimeters × 15 millimeters of size, small volume, it is adapted to mobile device.In the market has
A variety of supporting decks, technology maturation.The design of ingenious surface structure, user use more flexibly, can be with convenient, can hand
Hold, can use on the move, use can be fixed again.It is convenient without installation, adjustment and installation.
Mode of operation includes：AVI, AVO, DTV.Wherein, AVI (Audio Video Input) pattern, audio frequency and video input mould
Formula, this pattern use using this multimedia terminal as display device.Under this mode of operation, second processor 102 can not
Work, only first processor 101 works.Into after the pattern, the embedded software of first processor 101 scans each interface, from
The audio frequency and video output equipment of dynamic search user access, automatic searching synchronizing signal.Once first processor 101 confirms have equipment to connect
Enter, select correct parameter, and adapt to the standard of input signal automatically.Into after AVI patterns, first processor 101 passes through electricity
Source configuration management module, control close the circuit that the power supply of second processor 102 is connected with it, can now cut off more than half consumption
The power supply of the device of power, it is the working condition of most power saving.
DTV (Digital TV), DTV mode of operation, this pattern using this multimedia terminal as audio/video decoding and
The all-in-one of display uses.The equipment full-load operation that first processor 101 is connected with second processor 102, it is consumption electricity
The working condition of amount.First processor 101 completes Digital TV Receiving decoding, and second processor 102 is responsible for video being shown to
On LCD, played after audio is amplified to loudspeaker.
AVO (Audio Video Output), DTV mode of operation, this pattern regards using this multimedia terminal as sound
Frequency decoder uses.The audio, video data of reception is not played by LCD and loudspeaker, directly the sound by being connected with processor
Video output interface exports.First processor 101 closes the related road of LCD drivings by power configuration management module.At second
All devices that reason device 102 completes digital television function work on power.
Designed using multi-operation mode, two processor chips cooperate, and complete different mode of operations jointly.Pattern
Selected by user, main frame is used as by first processor 101, judge that control enters different patterns and worked, the different moneys of coordinated allocation
Source, accompanying drawing 2 is referred to, be a kind of flow chart of multimedia portable terminal switching working mode disclosed by the invention；The present invention
A kind of flow of multimedia portable terminal switching working mode is disclosed, is sentenced every time into this flow, first processor 101
It is disconnected whether to enter DTV mode of operations, if it is, the power supply of second processor 102 will be opened, and digital television function is related
It is electric on device, then go to judge whether to be AVO patterns, if not the drive circuit that will open LCD；When first processor 101
Judgement is not that when entering DTV patterns, will open LCD and be used with speaker circuit for first processor 101.On this programme after electricity
Two processor chips are separately operable respective program, and to give full play to processor ability, two processors respectively provide an OSD
(On-Screen Display on-screen menus) and user mutual, two OSD options do not conflict, and set content can be passed through with intercommunication
A set of button and remote control control, friendly interface is user-friendly, behind board mount can be with a variety of settings, can be in a variety of fields
Close and use.
Accompanying drawing 3 is referred to, is a kind of work for realizing terrestrial DTV multimedia portable terminal disclosed by the invention
Data flow figure；When audio-video signal inputs, audio, video data input first processor 101, after first processor 101 decodes
LCD is driven, and is transmitted to loudspeaker and played by audio power amplifier circuit.
During DVB-T signal of the data flow from antenna, by introducing second processor 102 after tuner tuning, demodulation,
By demultiplexing, descrambling, decoding.YPbPr signals now may be generated by the Video coding of first processor 101 to reach at first
Device 101 is managed, is played to LCD and loudspeaker；The Video coding of first processor 101 directly can also be generated into AV by audio-video interface
Signal is accessed in other playing audio/videos.
Data flow enters second processor 102 by USB or Ethernet, is decoded and controlled by the software of second processor 102
System, YPbPr signals can be generated by the Video coding of first processor 101 and reach first processor 101, be played to LCD and raise
Sound device；The Video coding of first processor 101 directly can also be generated into the other audio frequency and video of AV signals access by audio-video interface to broadcast
Put in equipment.
First processor 101 is Main Processor Unit, mode of operation is selected by first processor 101, if necessary at two
Device is managed to cooperate.Under DTV mode of operations, the YPbPr signals that second processor 102 exports are sent to first processor 101
In.First processor 101 receives button or remote control, filters the response of oneself needs, is sent to by GPIO custom protocols
Second processor 102.The content that first processor 101 interacts with second processor 102 includes, output parameter such as volume, language
Setting, display location size, osd information；Lcd screen relevant parameter such as contrast, brightness, color, backlight；Needed for system operation
Parameter working condition, actual program etc..Interactive mode can use I2C, GPIO, UART, while can share in E2PROM
Content.
In summary：Compared with prior art, the invention discloses one kind to realize terrestrial DTV multimedia portable
Terminal, based on DVB-T standards, the portable terminal of small-medium size LCD (7 cun to 12 cun) is carried, is cooperateed with using two processors
Work, under different mode of operations, it is functional to realize the institute of existing set top box, and it is aobvious to possess the processing of existing radio TV signals receiving
Show function, there is provided the multimedia function of USB, Ethernet interface, being not necessarily to using user's TV reception of the present invention must
It must be sitting in face of television set, fixed, the mobile and hand-held digital television program that can watch high quality is convenient, flexible；In addition,
Due to having used multiprocessor, function potentiality are big, and user can also enjoy other more matchmakers while highlight function is obtained
Body amusement function.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (4)
1. one kind realizes terrestrial DTV multimedia portable terminal, it is characterised in that based on DVB-T standards, carries medium and small
Size LCD, the small-medium size are 7 cun to 12 cun, including：First processor and second processor；
The first processor is tv signal processor, embeds MCU (Micro Control Unit, micro-control unit), is used
In completion to inputting the decoding process of audio-video signal, and play to LCD and loudspeaker, realize TV functions；
The second processor is the System on Chip/SoC of DTV, passes through the tuner circuits for reception signal being attached thereto
Common to complete terrestrial DTV business with the smart card circuitry for being communicated with smart card, the tuner circuits pass through antenna
Receive radiofrequency signal and demodulate the serial stream of output transmission, the second processor demultiplexes to receiving stream, and will utilize smart card
The Voice ＆ Video data descrambled are given decoder and decoded, and the second processor will have been decoded using video encoder
Digital video signal change and play, the second processor embeds USB and Ethernet controllers, by the USB or
The Ethernet interfaces, the second processor receive and handle multi-medium data；
The first processor and the second processor are each connected to FLASH, described for the storage of respective program and parameter
First processor and the second processor are by the program designation in respective FLASH, the program in respective independent operating FLASH；
The first processor and the second processor are connected with E2PROM respectively by I2C buses, are used in conjunction with same
E2PROM data storages, the data partition in the E2PROM are enjoyed, and shared data block agreement accesses；
The first processor has built-in RAM, and what the second processor connected is the RAM chip of the DDR2 interfaces of high speed；
The first processor and the second processor are (general by YPBPR interfaces (color difference components interface) and GPIO interface
Input/output interface) it is connected；
The first processor is primary processor, is responsible for completing mode of operation selection, power distribution management, battery charging and discharging pipe
Reason, and button and the remote control processing of user's operation are received, filter out what oneself was used, the second processor is used logical
The GPIO interface is crossed to send to the second processor；
Wherein, the mode of operation is specially：Audio frequency and video input pattern, DTV mode of operation and audio frequency and video output mode,
Wherein：
The audio frequency and video input pattern be the portable terminal as display device, the second processor does not work, described
First processor works, the electricity being connected by the power configuration management module control closing second processor power supply with it
Road；
The DTV mode of operation is that the portable terminal is set as the all-in-one of audio/video decoding and display, described
First processor and the second processor full-load operation, the first processor completes Digital TV Receiving decoding, described
Video is shown on LCD by second processor, is played after audio is amplified to loudspeaker；
The audio frequency and video output mode is equipment of the portable terminal as audio/video decoder, the audio, video data of reception
Do not played by LCD and loudspeaker, directly by audio and video output interface output be connected with the second processor, described the
One processor closes LCD drive circuits, the second processor completes digital television function by power configuration management module
All devices work on power.
2. portable terminal according to claim 1, it is characterised in that the first processor is also connected with audio frequency and video input
Interface, audio frequency and video power amplifier, panel button and remote control, serial ports and power distribution circuit.
3. portable terminal according to claim 1, it is characterised in that the first processor connection SPI interface
FLASH, the FLASH of the second processor connection sdram interface.
4. portable terminal according to claim 1, it is characterised in that described two processors can upgrade oneself respectively
Program in the FLASH of connection.
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| CN201210044993.3A CN103297825B (en) | 2012-02-24 | 2012-02-24 | One kind realizes terrestrial DTV multimedia portable terminal |
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| CN201210044993.3A CN103297825B (en) | 2012-02-24 | 2012-02-24 | One kind realizes terrestrial DTV multimedia portable terminal |
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| CN104462010B (en) * | 2013-09-13 | 2018-08-31 | 联想(北京)有限公司 | A kind of electronic equipment and condition control method |
| CN104678757A (en) * | 2013-12-02 | 2015-06-03 | 景德镇昌航航空高新技术有限责任公司 | Helicopter engine dual-redundancy fuel oil regulation controller |
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| US7404001B2 (en) * | 2002-03-27 | 2008-07-22 | Ericsson Ab | Videophone and method for a video call |
| CN201282515Y (en) * | 2008-10-21 | 2009-07-29 | 上海第二工业大学 | Personal mobile digital terminal |
| CN101877743A (en) * | 2010-06-22 | 2010-11-03 | 中兴通讯股份有限公司 | Mobile terminal and method for interacting mobile terminal with network server |
| CN202050482U (en) * | 2011-04-20 | 2011-11-23 | 新科电子集团有限公司 | All-in-one machine for blue light playing and cable digital television |
| CN102256174A (en) * | 2011-07-25 | 2011-11-23 | 北京视博数字电视科技有限公司 | Digital television receiving equipment |
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