CN101150675A - A portable DVB-H based external TV signal receiving device - Google Patents
A portable DVB-H based external TV signal receiving device Download PDFInfo
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- CN101150675A CN101150675A CNA2007101240500A CN200710124050A CN101150675A CN 101150675 A CN101150675 A CN 101150675A CN A2007101240500 A CNA2007101240500 A CN A2007101240500A CN 200710124050 A CN200710124050 A CN 200710124050A CN 101150675 A CN101150675 A CN 101150675A
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Abstract
The invention discloses a portable receiver of external TV signals based on DVB-H, comprising an antenna, a video signal tuned unit, a video signal demodulation unit and an output unit which are connected in order; the video signal tuned unit tunes DVB-H digital TV signals received by the antenna and transmits the signals to the video signal demodulation unit; the video signal demodulation unit demodulates received tuned signals processed by the video signal tuned unit and compacts into video streams; the output unit is used for outputting the video streams to an external portable terminal. The invention does not need any structure changes of prior portable terminals such as mobile phones, only needs a play software to be installed, then is connected with the output unit of the external TV signal portable terminal based on DVB-H, mobile phone digital TV programs provided by traders can be received.
Description
Technical field
The present invention relates to electronic installation, relate to a kind of specifically based on the hand-held digital video broadcast portable receiving system of external TV signal of (Digital Video Broadcasting Handheld is called for short DVB-H).
Background technology
Along with development of Communication Technique, mobile phone, personal digital assistant (Personal DigitalAssistant, be called for short PDA), portable terminal such as handheld device is universal day by day in daily life, simultaneously, along with digital video broadcast environment forms gradually, the notion of mobile TV is also increasingly mature, such as mobile TV etc.Present domestic mobile operator, TV station, content supplier/service provider (CP/SP), manufacturer terminal and some system integrators, all begun to pay close attention to this new business of mobile TV, and try out within the specific limits, comprise the special making of program, the adjustment of data traffic expense, suitable popularization etc.Although present national customer volume does not also break through 1,000,000, but the operator is still progressively cultivating the see the mobile phone watching habit of TV of mobile subscriber whenever and wherever possible, along with smart mobile phone is day by day popularized and the continuous downward modulation of the decline of price, mobile data services rate and movie and television contents abundanter, mobile phone TV services are expected to become the main flow that 3G uses, and become one of business most popular in the following 3G service.
From technological layer, providing of mobile TV mainly passed through dual mode at present: a kind of based on the data flow media business; A kind of digital broadcasting mode that is based on.
Wherein, be exactly that mobile operator utilizes existing mobile communications network to provide the mobile video business to the user based on the mobile TV of data flow media business, comprise contents such as news, filmlet and TV programme preview.China Mobile and CHINAUNICOM as the famous Sprint of communication company of the U.S., China have utilized this mode to release mobile phone TV services.The mobile phone TV services of China Mobile are based on its GPRS (General Packet Radio Service is called for short GPRS) network, and CHINAUNICOM relies on its code division multiple access (CDMA1X) network.This mobile phone TV services are actually and utilize stream media technology, and handle electromechanics is regarded as a kind of data service and released.No matter be GPRS mobile phone or CDMA1X mobile phone, all need corresponding playout software go up be installed in that the mobile phone terminal of operating system (generally being high-grade products such as PDA mobile phone) is being housed, corresponding TV programme is then organized and is provided by mobile operator or by content corresponding service provider.But, along with the growth of mobile phone television user, the user is to the solid demand of the mobile phone TV services whole mobile communications network that will crush.The bottleneck of network communication capacity will limit operator and further develop mobile phone TV services.
The technology of another kind of realization mobile TV is the digital broadcasting mode, that wherein be expected to most to become the mobile TV industry standard is exactly DVB-H, and it is the transmission standard of digital television standard tissue (DVB) for providing multimedia service to formulate by the received terrestrial digital broadcasting network to the portable/handheld terminal in Europe.Adopt the terminal of DVB-H to have characteristics low in energy consumption, as to move reception and strong anti-interference performance, so this standard is applicable to that small portable terminals such as mobile phone, handheld computer are by ground digital television broadcast network received signal.The system configuration of DVB-H comprises system front end and system terminal two parts as shown in Figure 1, and system front end is made of DVB-H packaging machine and DVB-H modulator, and the former is responsible for the IP data encapsulation is become mpeg 2 transport stream, and the latter is responsible for chnnel coding and modulation.System terminal is made of DVB-H demodulator and DVB-H terminal, and the former is responsible for, and signal receives, demodulation; The latter is responsible for the related service decoding, shows.
Can and play by digital broadcasting mode received television signal in order to make mobile phone, this class mobile phone of new production is inner integrated, and the DVB-H signal receives and processing unit, but user for numerous existing mobile phones, in order to have the function of received television signal, DVB-H receives and the mobile phone of processing capacity for having of can only taking more to renew, for this reason, the user need pay a no small expense.
Summary of the invention
Technical problem to be solved by this invention is the shortcoming that overcomes prior art, and a kind of external portable receiving system of the TV signal based on DVB-H is provided.
For this reason, the present invention proposes the portable receiving system of a kind of external TV signal based on DVB-H, this device comprises antenna, vision signal tuned cell, vision signal demodulating unit and the output unit that links to each other successively; The described vision signal demodulating unit of the humorous back input of DVB-H digital television signal that described vision signal tuned cell receives antenna; Described vision signal demodulating unit carries out demodulation and boil down to video flowing with the described harmonic ringing after the vision signal tuned cell is handled that receives; Described output unit is used for being connected with the external portable terminal, exports described video flowing to the external portable terminal.
The portable receiving system of above-mentioned external TV signal, described vision signal demodulating unit with described harmonic ringing demodulation after the video flowing of boil down to motion image expert group 2 (Motion Picture Experts Group-2, be called for short MPEG-2) form.
The portable receiving system of above-mentioned external TV signal, described output unit comprises USB interface, the video flowing of described vision signal demodulating unit output links to each other with the external portable terminal with USB port by USB interface, and described USB interface also is used for from the power taking of external portable terminal.
The portable receiving system of above-mentioned TV signal also comprises the battery that is used to power.
Above-mentioned external TV signal receiving system, described battery adopts rechargeable battery, also comprise the Power Management Unit that is connected with battery with described output unit, described Power Management Unit is carried out Charge Management from the power taking of external portable terminal to described battery by output unit.
Compared with prior art, the invention has the beneficial effects as follows: need not portable sets such as existing mobile phone are done transformation on any structure, on portable set, only need to install playout software, with after the output unit of the portable receiving system of external TV signal based on DVB-H of the present invention links to each other, just can watch the hand-set digit TV programme that operator provides then; This device is operated in the DVB-H pattern, and it has low in energy consumption, the mobile reception and the strong characteristics of antijamming capability; Because this device is independent of portable sets such as mobile phone, can use on different mobile phones, help the time sharing shared receiving system of multi-section mobile phone, that has realized resource shares, has higher utilance.
Because the vision signal of MPEG-2 form can be carried out efficient coding to the picture signal of different resolution and different output bit rates, signal is clear, picture is smooth so the video flowing of digital television signal boil down to MPEG-2 form can be made.
Can make this device have smaller volume by the direct power taking of USB interface, it is easy to carry about with one.
In addition, by the situation of output unit power taking deficiency, can make the normal use of this device, have stronger flexibility and adaptability by increasing battery and Power Management Unit for directly.
Description of drawings
Fig. 1 is a DVB-H system configuration schematic diagram.
Fig. 2 is the structural representation of the specific embodiment of the invention one when linking to each other with mobile phone based on the portable receiving system of the external TV signal of DVB-H.
Fig. 3 is the structural representation that the specific embodiment of the invention two links to each other with mobile phone.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment one
As shown in Figure 2, should comprise antenna, vision signal tuned cell, vision signal demodulating unit and the output unit that links to each other successively based on the portable receiving system of the external TV signal of DVB-H.
Wherein, the vision signal tuned cell is with the humorous back of the DVB-H digital television signal incoming video signal demodulating unit of antenna reception; The harmonic ringing after the vision signal tuned cell is handled that the vision signal demodulating unit will receive carries out the video flowing of demodulation and boil down to MPEG-2 form; Output unit adopts USB interface, and during use, USB interface links to each other with the mobile phone with USB port, and by the video flowing input handset of USB interface with the MPEG-2 form, mobile phone can be play the vision signal that receives by playout software.
The model that above-mentioned vision signal tuned cell adopts Microtune company to produce is the MT2260 digit chip.The market share of this chip is bigger, and bigger customers are arranged, and it is comparatively convenient that research and development are produced.The MT2260 digit chip is 6 millimeters * 6 millimeters little encapsulation, supporting L-band and UHF wave band (470Mhz-702Mhz) simultaneously, is the power consumption of 20-40MW during work, 9MW during power down, the power consumption of 250UW during sleep can realize the tuning reception to radiofrequency signal under various harsh conditions.
The model that above-mentioned vision signal demodulating unit adopts Dicon AS to produce is the DIB-H7000 digit chip.This digital processing chip package area is 8 millimeters * 8 millimeters, it is the DVB-H special chip that Dicon AS releases for mobile TV specially, possesses intermediate frequency and base band is directly imported, can connect various tuners flexibly, has ultralow power consumption, can accomplish when being operated in the DVB-H pattern that less than 20MW this is most important for mobile phone is used.
This device is powered by mobile phone by the USB mouth, and mobile phone is seen following explanation by the concrete steps of this device TV reception:
The first step: DVB-H TV signal input.The DVB-H TV signal is provided by DVB-H system front end shown in Figure 1, specifically be the TV programme of making to be delivered to transmitting station after modulation by the central control board of mobile operator or Radio ﹠ Television Bureau, again by transmitting station with the signal amplifying emission, the user receives by the antenna of this device.The form that is input to the DVB-H TV signal of this device is the MPEG-2 data flow.
Second step: DVB-H TV signal tuning.After the antenna of this device receives the DVB-H TV signal, through the MT2260 tuner with the manageable baseband signal of the tuning cost device of the TV RF signals that receives vision signal demodulating unit;
The 3rd step: to the processing of DVB-H TV signal, tv baseband signal after to be the DIB-H7000 digit chip to last MT2260 digit chip handle carries out demodulation, and the further boil down to of TV signal that demodulation obtains is fit to the mpeg 2 transport stream form of handset displays;
The 4th step: TV signal output.The TV signal of output is the data flow of MPEG-2 form, outputs to mobile phone through the USB mouth;
The 5th step: utilize the playout software on the mobile phone to play by the TV signal after this receiving system reception processing.
Embodiment two
As shown in Figure 3, be with the difference of embodiment one, this device also comprises the battery that is connected with the vision signal demodulating unit with the vision signal tuned cell and the Power Management Unit of the management that charges the battery, and Power Management Unit is by charging the battery from the USB interface power taking.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, delivery outlet can be not limited to USB interface, also can be the interface of other types, for example infrared, bluetooth etc.; Portable terminal is not limited to mobile phone, also can be the portable terminal of other types, and such as PDA, handheld game machine etc., the related device of described variation all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. the portable receiving system of the external TV signal based on DVB-H is characterized in that: comprise the antenna, vision signal tuned cell, vision signal demodulating unit and the output unit that link to each other successively; The described vision signal demodulating unit of the humorous back input of DVB-H digital television signal that described vision signal tuned cell receives antenna; Described vision signal demodulating unit carries out demodulation and boil down to video flowing with the described harmonic ringing after the vision signal tuned cell is handled that receives; Described output unit is used for being connected with the external portable terminal, exports described video flowing to the external portable terminal.
2. the portable receiving system of external TV signal as claimed in claim 1 is characterized in that: described vision signal demodulating unit with described harmonic ringing demodulation after the video flowing of boil down to MPEG-2 form.
3. the portable receiving system of external TV signal as claimed in claim 1 or 2, it is characterized in that: described output unit comprises USB interface, described vision signal demodulating unit presses the video flowing of output to link to each other with the external portable terminal with USB port by USB interface, and described USB interface also is used for from the power taking of external portable terminal.
4. the portable receiving system of external TV signal as claimed in claim 3 is characterized in that: also comprise the battery that is used to power.
5. the portable receiving system of external TV signal as claimed in claim 4, it is characterized in that: also comprise the Power Management Unit that is connected with battery with described output unit, described Power Management Unit is carried out Charge Management from the power taking of external portable terminal to described battery by output unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101240500A CN101150675A (en) | 2007-10-22 | 2007-10-22 | A portable DVB-H based external TV signal receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101240500A CN101150675A (en) | 2007-10-22 | 2007-10-22 | A portable DVB-H based external TV signal receiving device |
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| Publication Number | Publication Date |
|---|---|
| CN101150675A true CN101150675A (en) | 2008-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101240500A Pending CN101150675A (en) | 2007-10-22 | 2007-10-22 | A portable DVB-H based external TV signal receiving device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917584A (en) * | 2010-08-06 | 2010-12-15 | 华为终端有限公司 | Mobile television equipment |
| CN101621743B (en) * | 2008-07-01 | 2014-04-30 | 希姆通信息技术（上海）有限公司 | Realization device and method for dual-mode mobile TV and mobile phone comprising same |
| CN103841447A (en) * | 2012-11-20 | 2014-06-04 | 杭州云链网络技术有限公司 | Method and system for realizing video playing of mobile terminal based on digital broadcasting channel |
| CN107566899A (en) * | 2017-07-21 | 2018-01-09 | 深圳创维数字技术有限公司 | Digital video broadcasting terminal and storage device based on Android system |
| CN108401181A (en) * | 2018-01-31 | 2018-08-14 | 深圳市华曦达科技股份有限公司 | A kind of set-top-box system and its data processing method based on USB network card technology |
| CN108810621A (en) * | 2018-05-25 | 2018-11-13 | 青岛海信移动通信技术股份有限公司 | A kind of playback method of video data, device, mobile terminal and storage medium |
-
2007
- 2007-10-22 CN CNA2007101240500A patent/CN101150675A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621743B (en) * | 2008-07-01 | 2014-04-30 | 希姆通信息技术（上海）有限公司 | Realization device and method for dual-mode mobile TV and mobile phone comprising same |
| CN101917584A (en) * | 2010-08-06 | 2010-12-15 | 华为终端有限公司 | Mobile television equipment |
| CN103841447A (en) * | 2012-11-20 | 2014-06-04 | 杭州云链网络技术有限公司 | Method and system for realizing video playing of mobile terminal based on digital broadcasting channel |
| CN107566899A (en) * | 2017-07-21 | 2018-01-09 | 深圳创维数字技术有限公司 | Digital video broadcasting terminal and storage device based on Android system |
| CN108401181A (en) * | 2018-01-31 | 2018-08-14 | 深圳市华曦达科技股份有限公司 | A kind of set-top-box system and its data processing method based on USB network card technology |
| CN108810621A (en) * | 2018-05-25 | 2018-11-13 | 青岛海信移动通信技术股份有限公司 | A kind of playback method of video data, device, mobile terminal and storage medium |
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Open date: 20080326 |