CN101808222B - Digital television system and receiver and method for providing point of interest (POI) information thereby - Google Patents
Digital television system and receiver and method for providing point of interest (POI) information thereby Download PDFInfo
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- CN101808222B CN101808222B CN2009100089654A CN200910008965A CN101808222B CN 101808222 B CN101808222 B CN 101808222B CN 2009100089654 A CN2009100089654 A CN 2009100089654A CN 200910008965 A CN200910008965 A CN 200910008965A CN 101808222 B CN101808222 B CN 101808222B
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Abstract
The invention discloses a digital television system, a digital television receiver and a method for providing point of interest (POI) information so as to provide related information of points of interest related to programs or advertisement for a user conveniently and rapidly. A transmitting end of the digital television system adds the related information of at least one point of interest which is contained by the digital video and audio data into the digital video and audio data so as to encode to generate a digital signal and then transmit the digital signal. A receiving end of the digital television system comprises the digital television receiver and a display device, wherein the digital television receiver is used for receiving a digital video and audio signal and decoding to generate the related information of the point of interest according to the digital video and audio signal; and the display device is used for displaying the related information of the point of interest.
Description
Technical field
The present invention relates to digital television system, refer to a kind of DTV receiver and system especially and the method for the relevant information of point of interest is provided.
Background technology
(Digital Video Broadcasting DVB) is the main transmission standard that present DTV adopted in digital video broadcasting.Because DVB standard widespread usage arrives the action digital television apparatus, so the user also can watch DTV easily when walking or riding public transportation means.
Yet; As user during in a certain program of watching DTV or advertisement; For the shop, dining room, the sight spot that are occurred in program or the advertisement ... Deng point of interest (point of interest; POI), the user can't be easily or is obtained its further relevant information apace, like phone, address, longitude and latitude position, service time, charge method ... Or the like.The user must oneself surf the Net again search or or even the TV station's inquiry of making a telephone call to, just can obtain these information.Particularly, when the user is away from home, when using the action DTV, possibly be inconvenient to surf the Net, the relevant information that obtain point of interest can be difficult more.In other words, existing digital television service (comprise action DTV) does not provide the details of the point of interest relevant with program or ad content, and causes user's inconvenience.
Summary of the invention
Technical problem to be solved by this invention provides a kind of digital television system and receiver and the method for interest point information is provided, and offers the user with the convenient relevant information that reaches point of interest that apace will be relevant with program or advertisement.
In order to solve above technical problem, the present invention provides following technical scheme:
The invention provides a kind of digital television system; It comprises: a transmission end; Information in order at least one point of interest that will be relevant to digital audio-video data adds in these digital audio-video data, produces a digital audio-video signal with coding, and this digital audio-video signal is sent out; And a receiving terminal, comprise: a digital audio-video receiver in order to receiving this digital audio-video signal, and produces the information of this point of interest according to this digital audio-video signal decoding; And a display unit, be coupled to this digital audio-video receiver, in order to show the information of this point of interest.
The present invention provides a kind of DTV receiver in addition, and it comprises: a decoder, in order to decipher a digital audio-video signal to produce digital audio-video data; And a Search engine, be coupled to this decoder, in order to going out at least one point of interest, and search an interest point data base, to export an interest point information according to this point of interest from this digital audio-video data identification.
The present invention also provides a kind of method that the relevant information of point of interest is provided; System is used for a receiving terminal of a digital television system; Wherein a transmission end of this digital television system is that the information that will be relevant at least one point of interest of digital audio-video data adds in these digital audio-video data; Produce a digital audio-video signal with coding, this method comprises: receive this digital audio-video signal; Decipher this digital audio-video signal to produce the information of this point of interest; And the information that shows this point of interest.
At last, the invention provides a kind of method that the relevant information of point of interest is provided, is to be used for a DTV receiver, and this method comprises: according to a digital audio-video signal that is received, decoding produces digital audio-video data; Go out at least one point of interest from this digital audio-video data identification; And search an interest point data base according to this point of interest, to produce an interest point information.
Digital television system and the receiver that the present invention adopts and the method for interest point information is provided, the relevant information that can conveniently reach point of interest that apace will be relevant with program or advertisement offers the user.
Description of drawings
Fig. 1 (a) is the calcspar of an embodiment of DVB of the present invention system.
Fig. 1 (b) stores the form of the relevant information of point of interest for the position, PES packet data territory that utilizes the PES package.
Fig. 1 (c) is the calcspar of a preferred embodiment of the DVB receiver of Fig. 1 (a).
Fig. 2 is the calcspar of an embodiment of DVB receiver of the present invention.
Fig. 3 is the flow chart of an embodiment of the method for the relevant information that point of interest is provided of the present invention.
Fig. 4 is the flow chart of another embodiment of the method for the relevant information that point of interest is provided of the present invention.
Graphic figure number explanation:
The 10a:DVB of 1:DVB system conveyer
10b, 20:DVB receiver 11,211: antenna
12,212: frequency modulator 13,213: demodulator
14: decoder 141,214: message decoder
142:VBI decoder 143,215: video decoder
15,27: loudspeaker 16,29: display floater
17,30: guider 18,25: user's interface
The 19:PES package
191: crossfire identification code 192:PES package length
193: data calibration indication 194:PES header data length
195: filling byte 196:PES packet information
1961: identification code of date 1962: data unit
1963: filling byte 1964: data unit identification code
1965: data unit length 1966: data
21: the signal processing module
26: Search engine 28: interest point data base
Embodiment
Common digital television system comprises digital video broadcasting (Digital Video Broadcasting; DVB) system, advance (the Advanced Television Systems Committee of the rank TV committee; ATSC) the ATSC system that stipulates, integrated service digital broadcasting (Integrated Services DigitalBroadcasting; ISDB) system, and DMB (Digital Multimedia Broadcast) system; These digital television systems are divided into wired system and wireless system usually again; And the present invention proposes to offer with the relevant information of relevant point of interest in TV programme or the advertisement user's method and system and is applicable in above-mentioned those digital television systems; Be that example is explained method and system of the present invention all hereinafter, but be not in order to limit scope of the present invention with digital video broadcasting (DVB) system.
Fig. 1 (a) is the calcspar that digital video of the present invention is broadcasted an embodiment of (DVB) system; Wherein, DVB system 1 comprises a DVB conveyer 10a and a DVB receiver 10b, and DVB receiver 10b comprises an antenna 11, a frequency modulator (tuner) 12, a demodulator (demodulator) 13 and a decoder 14.In this embodiment; The system dealer of DVB service is provided, like TV station or Mobile Communications dealer etc., the relevant information of the point of interest that is occurred in the transmission end in advance with DVB video-audio data (like program or advertisement); Like title, phone, longitude and latitude position, address, service time, menu and advertising campaign message or the like; Add in this DVB video-audio data, produce the DVB signal with coding, the DVB signal passes through modulation and converts RF signal to after sent out by DVB conveyer 10a then.The DVB receiver 10b of receiving terminal receives the RF signal of DVB via antenna 11.Frequency modulator 12 is that (intermediatefrequency, IF) signal are sent to demodulator 13 to an intermediate frequency with the RF signal frequency reducing of DVB.The intermediate frequency signal of demodulator 13 these simulations of demodulation is to produce the crossfire signal (being original DVB signal) of a numeral.Decoder 14 decoding DVB signals are to produce DVB video-audio data and the script relevant information at the point of interest that the transmission end was added.The relevant information of the point of interest that decoder 14 is solved; Can directly offer user's reference; For example be shown in the display unit (figure does not show) that couples mutually with decoder 14, or sending other to can provide the hardware unit or the application software of fitting ground sex service (location basedservice) to use, and for example is sent to the electronic installation (figure does not show) with navigation feature; Finding out nearest point of interest, and be to navigate in the destination with it.In one embodiment, the relevant information of the point of interest that decoder 14 solves also can offer one have an electronic chart electronic installation, on electronic chart, to indicate the geographical position at point of interest place.
In the DVB audiovisual materials; Comprise interval (the vertical blanking interval of a vertical blank between per two adjacent frames data (frame data) or the field data (field data); VBI), therefore, in a preferred embodiment of the present invention; The relevant information of point of interest system is additional to the basic crossfire of packetized among the VBI, and (Packetized Elementary Stream is PES) in the package.For example, the position, PES packet data territory of PES package capable of using (PES Packet Data Field) stores the relevant information of point of interest, and its form is shown in Fig. 1 (b).Among Fig. 1 (b); PES package 19 comprises fields such as crossfire identification code (Stream Id) 191, PES package length 192, data calibration indication (Data Alignment Indicator) 193, PES header data length 194, filling (stuffing) byte 195 and PES packet data 196; And position, PES packet data territory 196 is subdivided into fields such as identification code of date 1961, plurality of data unit 1962 and filling byte 1963; Wherein, Data identification code field 1961 is set at a particular value, stores the relevant information of point of interest to represent this position, PES packet data territory 196; Each data unit 1962 comprises fields such as data unit identification code 1964, data unit length 1965 and data 1966; Can store certain relevant information of point of interest; Like data unit identification number 1964 is 01 o'clock; Representing this data unit 1962 is the title that stores point of interest, and data unit identification code 1964 is 02 o'clock, and representing this data unit 1962 is the phone that stores point of interest ... The rest may be inferred; 1963 of bytes of filling are used for supplying the required length in position, PES packet data territory 196.In this preferred embodiment, decoder 14 comprises a message decoder 141, a VBI decoder 142 and a video decoder 143, shown in Fig. 1 (c).The DVB signal that demodulator 13 is exported comprises an audio stream, a VBI crossfire and a video streams.This audio stream of message decoder 141 decodable codes, and output decode results to loudspeaker 15 are play; This video streams of video decoder 143 decodable codes, and output decode results to a display floater 16 is play; 142 in VBI decoder is deciphered the relevant information of the point of interest that is comprised to solve wherein to this VBI crossfire.In Fig. 1 (c); VBI decoder 142 can export the relevant information of the point of interest that solves to one guider 17; Like PDA(Personal Digital Assistant) or mobile phone etc., to carry out a navigation action according to this relevant information or on electronic chart, to indicate the position of point of interest.
In this preferred embodiment, the DVB signal that demodulator 13 is exported comprises each image content of the DVB video-audio data that the dealer of system play, and the relevant information of each point of interest that each picture comprised.The decoder 14 of DVB receiver 10b can one be chosen signal via what user's interface 18 received that the user imported, to choose certain picture or certain section picture (it comprises a plurality of pictures) that the DVB signal is comprised.For example, if display floater 16 has touch controllable function, then the user can be by directly touching display floater 16, to choose present picture displayed.Decoder 14 is chosen signal according to this, deciphers this DVB signal, solves with the relevant information with all points of interest in the selected picture, offers the user, for example, can the point of interest relevant information that solve be shown on the display floater 16.
Fig. 2 is the calcspar of an embodiment of DVB receiver of the present invention; Wherein, DVB receiver 20 comprises a signal processing module 21 and a Search engine 26, and signal processing module 21 comprises an antenna 211, a frequency modulator 212, a demodulator 213, a message decoder 214 and a video decoder 215.The DVB RF signal that antenna 211 receiving system dealers send from the transmission end, frequency modulator 212 is an intermediate frequency signal with this DVB RF signal frequency reducing, is sent to demodulator 213.The intermediate frequency signal of demodulator 213 these simulations of demodulation is to produce the crossfire signal (being the DVB signal) of a numeral, and it comprises an audio stream and a video streams, is transferred into message decoder 214 and video decoder 215 respectively.Message decoder 214 these audio streams of decoding are to produce message data, and it exports loudspeaker 27 on the one hand to and plays, and then sends into Search engine 26 on the other hand.Search engine 26 is coupled to an interest point data base 28, and it stores a plurality of points of interest and relevant information thereof.26 pairs of these message data of Search engine are carried out speech recognition, to pick out the point of interest that is comprised in these message data, for example from these message data, pick out the title of point of interest.On the other hand, video decoder 215 these video streams of decoding are to produce a video signal data, and it exports a display floater 29 on the one hand to and plays, and then sends into Search engine 26 on the other hand.26 pairs of these video signal datas of Search engine are carried out image identification, and for example optical character recognition OCR (Optical Character Recognition) to pick out the point of interest that is comprised in this video signal data, for example picks out the title of point of interest from this video signal data.Then, the point of interest that Search engine 26 utilizes from message data or the identification of video signal data institute comes searching interest point data base 28, if retrieve identical or similar point of interest, then the relevant information of this point of interest is read from database 28.In Fig. 2, interest point data base 28 is to be positioned at DVB receiver 20 outsides, and it can wired or wireless mode be connected with 20 of DVB receivers.For example, when DVB receiver 20 is that interest point data base 28 can be positioned at behavioral system dealer's server end when being integrated in a mobile phone, and DVB receiver 20 is via the long-range interest point data base 28 of this mobile phone access.In another embodiment, interest point data base 28 is to be integrated in the DVB receiver 20.
In a preferred embodiment, the crossfire signal that demodulator 213 is produced also comprises a literal (text) data, and it includes the captions of program or advertisement, for example the captions of forms such as Closed Caption, Teletext and Subtitle.Search engine 26 can carry out the retrieval of interest point data base 28 according to this from the lteral data in the crossfire signal to pick out point of interest.
In a preferred embodiment, the relevant information that Search engine 26 will be retrieved the point of interest of gained exports a guider 30 to, to carry out a navigation action according to this relevant information.In another preferred embodiment, video decoder 215 comprises each image content with the DVB video-audio data that message decoder 214 is exported.The Search engine 26 of DVB receiver 20 can one be chosen signal via what user's interface 25 received that the user imported, to choose certain picture that this DVB video-audio data comprised or the data of certain section picture.Search engine 26 can be chosen signal according to this, picks out point of interest this picture that is comprised from these DVB audiovisual materials or the data of this section picture, carries out the retrieval of interest point data base 28 according to this.
Fig. 3 is the flow chart of an embodiment of the method for the relevant information that point of interest is provided of the present invention.In this embodiment, this method system is applied to a DVB system.In the step 30, at least one point of interest that the transmission end of this DVB system is comprised for a DVB video-audio data adds its relevant information in this DVB video-audio data, produces a DVB signal with coding, converts RF signal then to and sends out.In a preferred embodiment, the relevant information of this point of interest system is contained in the vertical blank interval of DVB signal, for example, is contained in the interval basic crossfire of a packetized (PES) package of this vertical blank.
In the step 31, the receiving terminal of this DVB system receives the RF signal of this DVB, and converts RF signal the digital crossfire signal (being the DVB signal) of fundamental frequency into.
In the step 32, chosen signal via what user's interface imported, in the DVB signal, choose the data of one or more pictures according to the user.
In the step 33,, decipher the relevant information of becoming interested a little according to the data of choosing the one or more pictures in the selected DVB signal of signal.
In the step 34, show the relevant information of this point of interest, for example, be shown in a display unit, to offer the user.
Fig. 4 is the flow chart of another embodiment of the method for the relevant information that point of interest is provided of the present invention.In this embodiment, this method system is applied to a DVB receiver.In the step 40, according to a DVB signal that is received, decoding produces a DVB video-audio data.This DVB video-audio data comprises a video signal data, message data and a lteral data.
In the step 41, what receive that the user imported one chooses signal, to choose the data of one or more picture that is comprised in the DVB video-audio data.
In the step 42, from this selected one or more picture, pick out point of interest, that is; In the video-audio data of selected picture; Carry out image identification (for example, optical character recognition OCR) and speech recognition for video signal data and message data respectively, to pick out point of interest; And, lteral data is retrieved, to find out point of interest.
In the step 43,, search an interest point data base, to export the relevant information of each point of interest according to the point of interest that step 42 picked out.
In the step 44, show the relevant information of each point of interest, for example, be shown in a display unit, to offer the user.
The above is to utilize preferred embodiment to specify the present invention, and unrestricted scope of the present invention.Allly know this type of skill personage and all can understand, can make many possibly the variation, still do not break away from the spirit and scope of the present invention according to the announcement of above embodiment.
Claims (19)
1. a digital television system is characterized in that, comprises:
One transmission end adds in the digital audio-video data in order to the information with at least one point of interest, produces a digital audio-video signal with coding, and this digital audio-video signal is sent out; And
One receiving terminal comprises:
One digital audio-video receiver in order to receiving this digital audio-video signal, and produces the information of this point of interest according to this digital audio-video signal decoding; And
One display unit is coupled to this digital audio-video receiver, in order to show the information of this point of interest.
2. digital television system as claimed in claim 1 is characterized in that, the information system of this point of interest is contained in the vertical blank interval of this digital audio-video signal.
3. digital television system as claimed in claim 1 is characterized in that, the information system of this point of interest is relevant to this digital audio-video data.
4. digital television system as claimed in claim 1 is characterized in that, this receiving terminal more comprises:
One user's interface one is chosen signal in order to what receive that a user imported, and this chooses signal system in order to choose one or more picture that this digital audio-video signal is comprised;
Wherein, this digital audio-video receiver system chooses signal according to this, deciphers this digital audio-video signal to produce the information to point of interest that should one or more picture.
5. digital television system as claimed in claim 1 is characterized in that, this receiving terminal more comprises:
One guider in order to the information of this point of interest of being produced according to this digital audio-video receiver, is carried out a navigation action.
6. a DTV receiver is characterized in that, comprises:
One decoder is in order to decipher a digital audio-video signal to produce digital audio-video data; And
One Search engine is coupled to this decoder, in order to going out at least one point of interest from this digital audio-video data identification, and searches an interest point data base according to this point of interest, to export an interest point information;
One display unit is used to show on the electronic chart the pairing geographical position of this interest point information.
7. DTV receiver as claimed in claim 6 is characterized in that, these digital audio-video data comprise a video signal data, and this Search engine is carried out an image identification to this video signal data, to pick out this point of interest.
8. DTV receiver as claimed in claim 6 is characterized in that, these digital audio-video data comprise message data, and this Search engine is carried out a speech recognition to these message data, to pick out this point of interest.
9. DTV receiver as claimed in claim 6 is characterized in that, these digital audio-video data comprise a lteral data, and this Search engine picks out this point of interest from this lteral data.
10. DTV receiver as claimed in claim 6 is characterized in that, more comprises:
One user's interface one is chosen signal in order to what receive that a user imported;
Wherein, this Search engine system chooses signal according to this, chooses one or more picture that these digital audio-video data are comprised, and from this one or more picture, picks out this point of interest.
11. DTV receiver as claimed in claim 6 is characterized in that, this DTV receiver is coupled to a guider, and this interest point information that this guider is exported according to this Search engine is carried out a navigation action.
12. method that interest point information is provided; Be applied to a receiving terminal of a digital television system, wherein a transmission end of this digital television system system adds the information of at least one point of interest in the one digital audio-video data, produces a digital audio-video signal with coding; It is characterized in that this method comprises:
Receive this digital audio-video signal;
Decipher this digital audio-video signal to produce the information of this point of interest; And
The pairing geographical position of information that on an electronic chart, shows this point of interest.
13. the method that interest point information is provided as claimed in claim 12 is characterized in that, the information system of this point of interest is contained in the vertical blank interval of this digital audio-video signal.
14. the method that interest point information is provided as claimed in claim 12 is characterized in that, the information system of this point of interest is relevant to this digital audio-video data.
15. the method that interest point information is provided as claimed in claim 12 is characterized in that, more comprises:
What receive that a user imported one chooses signal; And
Choose signal according to this and choose one or more picture that this digital audio-video signal is comprised;
Wherein, decipher this digital audio-video signal with the step system of the information that produces this point of interest according to this selected one or more picture.
16. the method that interest point information is provided is to be used for a DTV receiver, it is characterized in that this method comprises:
Receive a digital audio-video signal;
Decipher this digital audio-video signal to produce digital audio-video data;
Go out at least one point of interest from this digital audio-video data identification; And
Search an interest point data base according to this point of interest, on an electronic chart, to produce the pairing geographical position of an interest point information.
17. the method that interest point information is provided as claimed in claim 16 is characterized in that, more comprises:
Show this interest point information.
18. the method that interest point information is provided as claimed in claim 16 is characterized in that, these digital audio-video data comprise a lteral data, and this identification step system picks out this point of interest from this lteral data.
19. the method that interest point information is provided as claimed in claim 16 is characterized in that, this identification step comprises:
What receive that a user imported one chooses signal, to choose one or more picture that these digital audio-video data are comprised; And
From this selected one or more picture, pick out this point of interest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100089654A CN101808222B (en) | 2009-02-16 | 2009-02-16 | Digital television system and receiver and method for providing point of interest (POI) information thereby |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100089654A CN101808222B (en) | 2009-02-16 | 2009-02-16 | Digital television system and receiver and method for providing point of interest (POI) information thereby |
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| CN101808222A CN101808222A (en) | 2010-08-18 |
| CN101808222B true CN101808222B (en) | 2012-07-25 |
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| CN2009100089654A Expired - Fee Related CN101808222B (en) | 2009-02-16 | 2009-02-16 | Digital television system and receiver and method for providing point of interest (POI) information thereby |
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| CN102254557B (en) * | 2011-07-04 | 2013-07-24 | 深圳市车音网科技有限公司 | Navigation method and system based on natural voice identification |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103526A (en) * | 1993-12-04 | 1995-06-07 | 行健电讯股份有限公司 | Method and system for overlapping text on live broadcast of satellite |
| CN1164801A (en) * | 1996-03-07 | 1997-11-12 | 国际商业机器公司 | Context-based recognition system for interactive TV and telephony |
-
2009
- 2009-02-16 CN CN2009100089654A patent/CN101808222B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103526A (en) * | 1993-12-04 | 1995-06-07 | 行健电讯股份有限公司 | Method and system for overlapping text on live broadcast of satellite |
| CN1164801A (en) * | 1996-03-07 | 1997-11-12 | 国际商业机器公司 | Context-based recognition system for interactive TV and telephony |
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| CN101808222A (en) | 2010-08-18 |
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