CN101035245A - Digital wired broadcast system and the method for providing area information using the same - Google Patents
Digital wired broadcast system and the method for providing area information using the same Download PDFInfo
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- CN101035245A CN101035245A CN 200610056722 CN200610056722A CN101035245A CN 101035245 A CN101035245 A CN 101035245A CN 200610056722 CN200610056722 CN 200610056722 CN 200610056722 A CN200610056722 A CN 200610056722A CN 101035245 A CN101035245 A CN 101035245A
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Abstract
The invention relates to a digital wired broadcasting system using out-of-frequency range channel of wired broadcasting channel to make social information of other regions required by audio-visual users able to be suitable to real-time service in digital wired broadcasting system, and a regional information providing method using the system. And the invention comprises the parts of: wired front-end system, combining regional broadcasting information with digital wired broadcast of in-frequency range channel through the out-of-frequency channel and then transmitting the regional broadcasting information; digital TV set with wired function, receiving the digital wired broadcast and regional broadcasting information from the wired front-end system and processing the received digital wired broadcasting information and making it accord with the format of a display part and then displaying it, and meanwhile, displaying the regional broadcasting information and the digital wired broadcast together on screen in the display part. And the invention can quickly and accurately obtain corresponding information, and reap profits based on regional advertisement; and improves advertising reliability.
Description
Technical field
The present invention relates to digital cable broadcast, particularly relate in the digital cable broadcast system, utilize outer (Out Of Band) channel of frequency band (not being (In Band) channel in the frequency band) of wired broadcasting channel, other regional social informations the audiovisual user needs can be suitable for the digital cable broadcast system of real-time time service and utilize its area information that method is provided.
Background technology
The world today is carrying out broadcast medium digitized today rapidly, (refers to Korea S) at home and also begin to carry out the digital broadcasting of terrestrial broadcasting and satellite broadcasting.
Current, TV (TV) receiver that (refers to Korea S) at home be to receive broadcasting more than 60% by wired network, wired broadcasting is compared with terrestrial broadcasting with satellite, though its digitlization is slow, but, actively carry out introduction and promotion work in recent years to the wired broadcasting digital system.
Many digitized promotion work of wired broadcasting that are have been done by information communication portion (referring to Korea S) since 1999.In calendar year 2001 the open cable of the U.S. (Open cable) standard is decided to be domestic (referring to Korea S) digital cable broadcast standard.
Open cable (Open cable) pattern is made in U.S.'s cable television laboratory { CableLabs:CableTelevision Laboratoris.inc.) }; It is the interface rules of a kind of device that the digital device different with the set-top box (Set Top Box) of digital cable broadcast television set limited.
Though the U.S. occupies sizable part in all market of wired broadcasting, to comprising the Equipment Market of relevant front end (Head-end) equipment and set-top box, Motorola, Scientific Atlanta two companies almost monopolize the whole market.Therefore the viewpoint in slave unit market be we can say to be in and is almost sealed standstill state.In order to eliminate this sealing standstill state, since 2005, restriction is received relevant portion, from set-top box, separate.
Open cable (Open cable) standard is to constitute in order to satisfy the regulation of FCC (FCC), existing set-top box to be divided into the user terminal main frame (Host) of eliminating the restriction receiving unit and to comprise restriction reception { POP (Point Of the Deployment) } module that limits receiving unit.
To open cable (Open cable) standard, require to have following function:
The 1st, be to support FCC (FCC) to require the function of item, this function comprises in the market of possibility that the restriction receiving function separates, competition to the purchase that adds cable TV subscriber's end host, with the conformability of existing digital cable broadcast system etc.;
The 2nd, for guaranteeing network application and audio frequency and video quality, need the support property parameter;
The 3rd, support restriction receiving function by the restriction receiver module;
The 4th, support the frequency band external signal.
For electronic program guides { EPG (Electronic Program Guide) } related service, mandate (qualification) management information { EMM (Entitlement Management Message) }, data, services etc. are provided, can use special frequency band.
The 5th, support output function by high definition TV (HDTV) compressed stream of UPI (IEEE1394) connection;
The 6th, support to satisfy the system copy function that the Motion Picture Association of America { MPAA (Motion PictureAmericarn) } of upper level program is required item.
In existing data broadcasting, video in broadcasting channel (Video) and audio frequency (Audio) the frequency signal, the broadcasting of the information of wishing by the audiovisual user who appends or the broadcast message of additivity etc. is provided data broadcasting service for the audiovisual user, thereby satisfies user's needs.
Therefore, if radio broadcasting, each talk jockey can provide various data broadcasting service so, and in this service, provides the irrelevant information with regional social information usually morely.
But, can receive { the Cable Ready DTV} of the digital television with wired function of open cable (Open cable) broadcasting, because regional wired broadcasting worker, from the audiovisual user receive add the cable tv broadcast requirement after, serve adding access customer, therefore can provide and the social closely related information in zone.
Digital cable broadcast can utilize the outer channel (OOB) of the frequency band different with (In Band) channel in the frequency band.Promptly, by the outer channel (OOB) of frequency band, the cable TV worker not only provides as cable channel information (that is) system information { SI (System Information) }, channel image information, but also accident signaling system { EAS (Emergency Alert System) } can be provided.
Below, with reference to accompanying drawing, to describing based on the conventional art digital cable broadcast system.Fig. 1 is the formation block diagram of general digital cable broadcast system.
At first, general digital cable broadcast system, can divide into from big aspect usually: the wired front end system 100 and the reception that transmit the wired broadcasting worker of digital cable broadcast are transmitted 200 two parts of the digital television with wired function that wired broadcasting adds access customer.
Here, wired front end system 100 is to be made of multiplexed and encipherment portion 110, the outer data processing division 120 of transmitter side frequency band, quadrature amplitude modulation (qam) modulation portion 130, the outer data-modulated portion 140 of frequency band, joint portion 150.
Here, multiplexed and encipherment portion 110 is transformed to a Moving Picture Experts Group-2 to video, audio frequency and data flow and transmits stream (Transport Stream) form, and can optionally carry out audiovisual for the entrant to specific channel, to conditional access (visit) system { CAS (Conditional Access System) } when controlling, after carrying out encipherment, audiovisual is limited based on program contents.
And, the transmitter side frequency band is data processing division 120 system information { SI (System Information) }, accident signaling system { EAS (Emergency Alert System) } information as channel image information outward, are treated to accord with to have wired function digit television set { specification information of Cable Ready DTV}.
Quadrature amplitude modulation (qam) modulation portion 130 has been carried out video, audio frequency and the data of multiplexed and encipherment in multiplexed and encipherment portion 110 Moving Picture Experts Group-2 transmits stream (TS), utilizes the quadrature amplitude modulation (qam) modulating mode to carry out modulation treatment.
And the outer data-modulated portion 140 of frequency band utilizes outer channel (OOB) data of handling in the outer data processing division 120 of transmitter side frequency band of frequency band Quadrature Phase Shift Keying (QPSK) modulating mode to carry out modulation treatment.
And the digital television 200 with wired function is to be made of tuning outside converter section 210, digital tuning and demodulation section 220, the frequency band and the outer data demodulates portion 230 of frequency band, reception restriction system portion 240, the outer data processing division 250 of receiver side frequency band, audio frequency (A)/video (V) decoding part 260, processing image processing part 270a and display part 280.
Here, converter section 210 from the signal that wired front end system 100 transmits, arrives digital tuning and demodulation section 220 to the conversion of signals of quadrature amplitude modulation (qam) modulation by cable 300; And the conversion of signals of Quadrature Phase Shift Keying (QPSK) modulation is arrived the outer tuning and outer data demodulates portion 230 of frequency band of frequency band.
And digital tuning and demodulation section 220 selected specific cable digital TV machine broadcasting channel, and the signal of quadrature amplitude modulation (qam) modulation, is demodulated into Moving Picture Experts Group-2 and transmits and flow form; And outside frequency band outside the tuning and frequency band in the data demodulates portion 230, for reception is input to the data of the outer channel of frequency band, is chosen as corresponding frequencies, and a signal that receives is carried out demodulation.
Receive restriction system portion 240, according to being transmitted the reception restricted information that comprises in the stream by the Moving Picture Experts Group-2 of demodulation in digital tuning and the demodulation section 220, to whether can audiovisual judging.
The outer data processing division 250 of receiver side frequency band is handled after the shunting by system information { SI (System Information) }, accident signaling system various information such as { EAS (Emergency Alert System) } that the outer channel (OOB) of frequency band receives.
And audio frequency (A)/video (V) decoding part 260 can carry out audiovisual to video, audio frequency and data flow in order to make the audiovisual user, and it is deciphered; And handle image processing part 270a the picture signal of decoding in audio frequency (A)/video (V) decoding part 260 is treated to the form that accords with display part 280.
The image of display part 280 for the audiovisual user can audiovisual be handled in handling the treatment of picture 270a of portion shows image.
In as above-mentioned conventional art,, in multiplexed and encipherment portion 110, carry out multiplexed and encipherment to video, audio frequency and data flow; And in quadrature amplitude modulation (qam) modulation portion 130, if after modulating with the quadrature amplitude modulation (qam) modulating mode, is the channel image information of modulating in outer data processing division 120 of transmitter side frequency band and the outer data-modulated portion 140 of frequency band when system information (SI) and accident signaling system (EAS) carry out combination together in joint portion 150, transmit by cable 300, then, decipher by digital tuning and demodulation section 220, reception restriction system portion 240 and audio frequency (A)/video (V) decoding part 260 to video, audio frequency and data flow; And to system information (SI) and accident signaling system (EAS) information, by frequency band outer tuning and outer data demodulates portion 230 of frequency band and the outer data processing division 250 of receiver side frequency band, be channel image information that system information (SI) and accident signaling system (EAS) information are shunted.
But, in this conventional digital wired broadcasting, to other regional social news or the information that obtains from the cable TV worker, still only broadcast by other cable channel, therefore the audiovisual user passes through conventional art, for social news or the information of knowing that other are regional, existing needs to continue the specific channel problem of audiovisual.For conventional art, in fact the news or the information of zone society, transmit for the audiovisual user with real-time time, exist the problem that is not easy to transmit really.
Summary of the invention
The present invention develops for the problem that solves above-mentioned existence, its objective is in the digital cable broadcast system, give the regional entrant who just has the digital television of wired function by the outer channel (OOB) of frequency band, be provided in the real-time time and can transmit the information of zone society the digital cable broadcast system of service and utilize its area information that method is provided in audiovisual.
The digital cable broadcast system of opening in order to achieve the above object of the present invention comprises following part: to regional broadcast information, and the wired front end system that transmits after the digital cable broadcast of channel combines in frequency band by the outer channel of frequency band; From wired front end system, receive digital cable broadcast and regional broadcast information, and the information that receives digital cable broadcast, be treated to and accord with when showing behind the display part form, regional broadcast information is carried out the digital television with wired function of screen display with digital cable broadcast in display part.
The wired front end system of the present invention comprises following part: video, audio frequency and data are carried out the multiplexed of multiplexed and encipherment and encipherment portion; Is channel image information system information (SystemInformation), accident signaling system (Emergency Alert System) and regional social information, is treated to accord with the outer data processing division of the transmitter side frequency band with wired function digit television set specification; The Moving Picture Experts Group-2 of video, audio frequency and the data of carrying out multiplexed and encipherment is transmitted stream, carry out the quadrature amplitude modulation modulation portion of modulation treatment; The outer channel data of having handled in the outer data processing division of transmitter side frequency band of frequency band, carry out the outer data-modulated portion of frequency band of modulation treatment; Modulated Moving Picture Experts Group-2 in the quadrature amplitude modulation modulation portion is transmitted the outer channel data of modulated frequency band in stream, the outer data-modulated portion of frequency band,, transmit the joint portion of carrying out combination by cable for according to entrant's type.And the present invention has wired function digit television set and comprises following part: to the signal of quadrature amplitude modulation modulation, be transformed into digital tuning and demodulation section, and, be transformed into the converter section of the outer tuning and outer data demodulates portion of frequency band of frequency band to the signal of the modulation of Quadrature Phase Shift Keying; Select cable digital TV machine broadcasting channel, and the signal of quadrature amplitude modulation modulation is demodulated into digital tuning and the demodulation section that Moving Picture Experts Group-2 transmits the stream form; To the data that are input to the outer channel of frequency band and signal is selected and the outer tuning and outer data demodulates portion of frequency band of the frequency band of demodulation; Transmit the reception restricted information that comprises in the stream according to demodulated Moving Picture Experts Group-2, the reception restriction system portion that can audiovisual to whether differentiates; The channel image information that receives by the outer channel of frequency band is the outer data processing division of receiver side frequency band that system information (SI), accident signaling system (EAS) and regional social information shunt processing; For the audiovisual user can the audiovisual video, audio frequency and data flow, to its audio/video decoding part of deciphering; The regional social information that handles in the outer data processing division of receiver side frequency band is carried out the HTML handling part that HTML(Hypertext Markup Language) is handled; To the vision signal of from the audio/video decoding part, deciphering, be treated to the form that accords with display part, and the regional social information that handles in the HTML handling part is carried out processing image processor and the graphics processing part that screen display is handled; The display part that image of handling in handling image processor and graphics processing part and regional social information show.
Area information in the digital cable broadcast system of opening in order to achieve the above object of the present invention provides method to comprise the steps: by the outer channel of frequency band regional social information data to be carried out receiving step; To regional social information arrival notice information, in having wired function digit television set display part, carry out step display; When whether audiovisual shows to arrival information,, then arrival information is carried out step display with the screen form if carry out audiovisual; If finish audiovisual or do not carry out audiovisual, then whether arrival information is stored and carry out step display; According to audiovisual user's selection, step is stored or deleted to arrival information.
In digital cable broadcast system, the message catalog that can provide teletrician self is sent to has wired function digit television set, and the audiovisual user selects information that the user needs in the catalogue that is transmitted after, only transmit the regional social information that the user selects, perhaps in having wired function digit TV, only the corresponding to information of regional social information catalogue to selecting with the user shows regional social information arrival notice information.
To other purpose features of the present invention and strong point etc., it is understandable that the representative instance by the reference accompanying drawing describes in detail.
Advantageous effect of the present invention is as follows:
At digital cable broadcast system of the present invention and utilize neurotic area information to provide in the method, if the digital cable TV entrant wants to obtain the regional social information that oneself is wished, then wish information because the user is provided in the catalogue of set information that provides of cable TV worker, therefore can be correct fast obtain corresponding information.The present invention can create the income based on regional advertisement to the cable TV worker; And for the supplier of advertisement, only the audiovisual user to the application advertisement transmits, and has therefore improved the reliability of advertisement.
Description of drawings
Fig. 1 is the formation block diagram of general digital cable broadcast system.
Fig. 2 is based on the formation block diagram of digital cable broadcast system of the present invention.
Fig. 3 is based on the area information system of selection key diagram that the present invention has wired function digit television set.
Fig. 4 is based on the area information that the present invention has wired function digit television set method flow diagram is provided.
The explanation of major part symbol among the figure:
100: wired front end system 110: multiplexed and encipherment portion
120: the outer data processing division 130 of transmitter side frequency band: quadrature amplitude modulation (qam) modulation portion
140: the outer data-modulated portion 150 of frequency band: joint portion
200: have wired function digit television set 210: converter section
220: digital tuning and demodulation section 230: the outer tuning and outer data demodulates portion of frequency band of frequency band
240: receive restriction system portion 250: the outer data processing division of receiver side frequency band
260: audio frequency (A)/video (V) decoding part
270: handle image processor and graphics processing part
280: display part 290: the HTML(Hypertext Markup Language) handling part;
300: cable
Embodiment
Below, with reference to accompanying drawing, to based on digital cable broadcast system of the present invention and utilize its area information to provide method to describe.
Fig. 2 is based on the formation block diagram of digital cable broadcast system of the present invention.
Having wired function digit television class based on the present invention is similar to and generally has wired function digit television set, but different is: in wired front end system 100, be system information (SI) or accident signaling system (EAS) information not only to the channel image signal, and, to regional social information (area information, spot news, regional advertisement etc.), with HTML { HTML (Hypertext Markup Language) } form, transmit by the outer channel (OOB) of frequency band; And when having wired function digit television set 200 the message pick-up that transmits in the outer channel (OOB) of frequency band, the area information of HTML(Hypertext Markup Language) form, be treated to the information that can constitute with screen display (OSD), and an information of handling shows with screen display (OSD) form that with view data Here it is and the difference that generally has wired function digit television set.
That is,, divide into wired front end system 100 of the wired broadcasting worker who transmits digital cable broadcast and 200 two parts of the digital television with wired function that reception is transmitted the entrant of wired broadcasting usually based on digital cable broadcast system of the present invention.
Here, wired front end system 100 is to be made of multiplexed and encipherment portion 110, the outer data processing division 120 of transmitter side frequency band, quadrature amplitude modulation (qam) modulation portion 130, the outer data-modulated portion 140 of frequency band and joint portion 150.
Here, multiplexed and encipherment portion 110 is transformed to a Moving Picture Experts Group-2 to video, audio frequency and data flow and transmits stream (Transport Stream) form, and can optionally carry out audiovisual for the entrant to specific channel, conditional access (visit) system { CAS (Conditional Access System) } when controlling, is carried out after the encipherment based on program contents audiovisual being limited.
And, the transmitter side frequency band is 120 information (area information, spot news, regional advertisement etc.) as the zone society of system information (SI), accident signaling system (EAS) information and HTML { HTML (Hypertext the MarkupLanguage) } form of channel image information of data processing division outward, are treated to accord with to have wired function digit television set { specification of Cable Ready DTV}.
Quadrature amplitude modulation (qam) modulation portion 130 transmits stream (TS) to the Moving Picture Experts Group-2 of video, audio frequency and the data of having carried out multiplexed and encipherment in multiplexed and the encipherment portion 110, for transmitting with cable (cable) 300, utilize the quadrature amplitude modulation (qam) modulating mode to carry out modulation treatment by connecting wired front end system 100 with wired function digit television set 200.
The outer data-modulated portion 140 of frequency band for transmitting by cable 300, utilizes outer channel (OOB) data of handling in the outer data processing division 120 of transmitter side frequency band of frequency band Quadrature Phase Shift Keying (QPSK) modulating mode to carry out modulation treatment.
And, modulated M PEG-2 standard in the quadrature amplitude modulation (qam) modulation portion 130 is transmitted outer channel (OOB) data of frequency band of modulation in stream (TS) and the outer data-modulated portion 140 of frequency band in joint portion 150, for according to entrant's type, transmit by cable 300 and to combine.
Here, converter section 210 from the signal that wired front end system 100 transmits, arrives digital tuning and demodulation section 220 to the conversion of signals of quadrature amplitude modulation (qam) modulation by cable 300; And the conversion of signals of Quadrature Phase Shift Keying (QPSK) modulation is arrived the outer tuning and outer data demodulates portion 230 of frequency band of frequency band.
Digital tuning and demodulation section 220 selected specific cable digital TV machine broadcasting channel, and the signal of quadrature amplitude modulation (qam) modulation, is demodulated into Moving Picture Experts Group-2 and transmits and flow form; And outside frequency band, outside the tuning and frequency band in the data demodulates portion 230, for receiving the data that are input to the outer channel of frequency band, be chosen as corresponding frequencies, and a signal that receives is carried out demodulation.
In addition, receive restriction system portion 240, according to being transmitted the reception restricted information that comprises in the stream by the Moving Picture Experts Group-2 of demodulation in digital tuning and the demodulation section 220, to whether can audiovisual differentiating; And the various information such as regional social information of the system information (SI) that the outer data processing division 250 of receiver side frequency band receives by the outer channel (OOB) of frequency band, accident signaling system (EAS), HTML(Hypertext Markup Language) form are handled after the shunting.
Audio frequency (A)/video (V) decoding part 260 can carry out audiovisual to video, audio frequency and data flow in order to make the audiovisual user, and it is deciphered.
HTML(Hypertext Markup Language) handling part 290 to carry out HTML(Hypertext Markup Language) to it and handles in order can showing the regional social information that handles in the outer data processing division 250 of receiver side frequency band with screen display (OSD) form.
And the picture signal that processing treatment of picture device and graphics processing part 270 are deciphered in audio frequency (A)/video (V) decoding part 260 is treated to the form that accords with display part 280; And in HTML(Hypertext Markup Language) handling part 290,, be treated to and be suitable for screen display (OSD) form that the audiovisual user can audiovisual the regional social information of the HTML(Hypertext Markup Language) form handled.
The image of display part 280 for the audiovisual user can audiovisual be handled in handling treatment of picture device and graphics processing part 270 shows image.
As above-mentioned digital cable broadcast system of the present invention,, in multiplexed and encipherment portion 110, carry out multiplexed and encipherment to video, audio frequency and data flow; And in quadrature amplitude modulation (qam) modulation portion 130, if after modulating with the quadrature amplitude modulation (qam) modulating mode, is modulated channel image information in outer data processing division 120 of transmitter side frequency band and the outer data-modulated portion 140 of frequency band after system information (SI) and accident signaling system (EAS) information and regional social information together combine, transmit by cable 300, then to video, audio frequency and data flow, decipher with reception restriction system portion 240 and audio frequency (A)/video (V) decoding part 260 by digital tuning and demodulation section 220, and be system information (SI) and accident signaling system (EAS) information and regional social information to channel image information, splitting into channel image information by outer tuning and outer data demodulates portion 230 of frequency band of frequency band and the outer data processing division 250 of receiver side frequency band is system information (SI) and accident signaling system (EAS) information and regional social information news, information and advertisement; At this moment, in HTML(Hypertext Markup Language) handling part 290, regional social information is treated to the HTML(Hypertext Markup Language) form; In handling treatment of picture device and graphics processing part 270, picture signal is treated to the demonstration specification that accords with display part 280, and to the regional social information of HTML(Hypertext Markup Language) form, after screen display { OSD (On Screen Display) } processing, output to display part 280.
At this moment, for the audiovisual user from the regional social information that wired front end system 100 transmits, receive only the news or the advertisement of own selection, wired front end system 100 is the message catalog that the cable TV worker provides, and is sent to have wired function digit television set.To this problem, describe with reference to Fig. 3.
Fig. 3 is based on the area information system of selection key diagram that the present invention has wired function digit television set.
At first, the digital cable broadcast worker is sent to wired function digit television set that has that the audiovisual user that adds wired broadcasting had to the message catalog that oneself can provide; And the audiovisual user can select the information that oneself needs in the catalogue that is transmitted.For example in Fig. 3, if the digital cable broadcast worker transmits foundation information, real estate information, house property information, interest rate information, solicited message--the catalogue of-sport information etc. by wired front end system 100, then the situation of the foundation information that expression audiovisual user selects among the figure, house property information, interest rate information (∨).
According to the above description, in having wired function digit television set, information relevant information with user's selection, have only under the situation about receiving and just can carry out display notification by the outer channel (OOB) of frequency band, and the information (information of reception) that arrives is according to user's selection, store having in wired function digit television set storage device { for example, hard disk (HDD) }.
Fig. 4 is based on the area information that the present invention has wired function digit television set method flow diagram is provided.
Have based on the present invention that area information provides method in wired function digit television set, if by outer channel (OOB) the receiving channels picture signal of frequency band is that system information (SI), accident signaling system (EAS) information and regional social information data (area information, spot news zone advertisement etc.) (S110), are then analyzed (S120) to data.
Whether analysis result is that the information that user (audiovisual user) sets is judged (S130) to regional social information data.
If judged result (S130) is the information that the audiovisual user sets,, in display part, show (S140) with wired function digit television set then information arrival notice information.
Then, when whether now audiovisual shows to arrival information, which kind of selection the user is carried out judge (S150).At this moment, for example to current audiovisual, in the various keys (button) of remote controller, for selecting one of them (for example, No. 1 key or volume, channel make progress button etc.) and show; Do not carry out audiovisual to current, for selecting other buttons (for example, No. 3 key or volume, channel down button etc.) and show.
If judged result (S150) is the current information of wanting audiovisual to arrive, then the information that arrives is shown (S160) with screen display (OSD) form.At this moment, if the information of current demonstration is not wished to continue audiovisual again, then in the various keys (button) of remote controller, for selecting one of them (for example, No. 0 key etc.) and show.
Then, the user does not wish audiovisual again or through after the stipulated time, and whether the information that has shown is stored when showing, which kind of selection the user is carried out judge (S170).To storage in this case, in the various keys (button) of remote controller, for selecting one of them (for example, No. 1 key or volume, channel make progress button) and show; To the current audiovisual situation of not carrying out, for selecting other buttons (for example, No. 3 keys or volume channel make progress button) and show.
And, if judged result (S150) is that the Information Selection that arrives is not carried out audiovisual, then also whether the user is stored in this case and show.
If store button is pressed in the selection (storage) according to the user, then this information is stored (S180) in the storage device with wired function digit television set (hard disk or flash of light memory), if do not store, then, in display part, eliminate the area information screen display (OSD) that had shown.
Certainly, in wired front end system of digital cable broadcast system, also can only transmit the information that the user selects to catalogue.
And, audiovisual user (regional cable TV entrant) with wired function digit television set, oneself is wished with regional relevant information or advertisement, when can optionally obtain information is stored at memory space, therefore can seek the information of own hope at any time.And the information formation that is provided is the HTML(Hypertext Markup Language) form, so the user also can retrieve it when obtaining providing of information with the method for being familiar with.
By the content of above-mentioned explanation, if the worker of the industry, do not break away from then that can to have variation to change and revise in the scope of the technology of the present invention thought be understandable.
Therefore, the technology of the present invention scope is not that the content of putting down in writing in the example limits, but decides according to the Patent right requirement scope.
Claims (5)
1, digital cable broadcast system is characterized in that comprising following part:
To regional broadcast information, the wired front end system that transmits after the digital cable broadcast of channel combines in frequency band by the outer channel of frequency band;
From wired front end system, receive digital cable broadcast and regional broadcast information, and the information that receives digital cable broadcast, be treated to and accord with when showing behind the display part form, regional broadcast information is carried out the digital television with wired function of screen display with digital cable broadcast in display part.
2, digital cable broadcast system according to claim 1 is characterized in that described wired front end system comprises following part:
Video, audio frequency and data are carried out the multiplexed of multiplexed and encipherment and encipherment portion; Is channel image information system information, accident signaling system and regional social information, is treated to accord with the outer data processing division of the transmitter side frequency band with wired function digit television set specification; The Moving Picture Experts Group-2 of video, audio frequency and the data of carrying out multiplexed and encipherment is transmitted stream, carry out the quadrature amplitude modulation modulation portion of modulation treatment; The outer channel data of having handled in the outer data processing division of transmitter side frequency band of frequency band, carry out the outer data-modulated portion of frequency band of modulation treatment; Modulated Moving Picture Experts Group-2 in the quadrature amplitude modulation modulation portion is transmitted the outer channel data of modulated frequency band in stream, the outer data-modulated portion of frequency band,, transmit the joint portion of carrying out combination by cable for according to entrant's type.
3, digital cable broadcast system according to claim 1 is characterized in that describedly having wired function digit television set and comprising following part:
Signal to the modulation of quadrature amplitude modulation is transformed into digital tuning and demodulation section, and to the signal of Quadrature Phase Shift Keying modulation, is transformed into the converter section of the outer tuning and outer data demodulates portion of frequency band of frequency band; Select cable digital TV machine broadcasting channel, and the signal of quadrature amplitude modulation modulation is demodulated into digital tuning and the demodulation section that Moving Picture Experts Group-2 transmits the stream form; To the data that are input to the outer channel of frequency band and signal is selected and the outer tuning and outer data demodulates portion of frequency band of the frequency band of demodulation; Transmit the reception restricted information that comprises in the stream according to demodulated Moving Picture Experts Group-2, the reception restriction system portion that can audiovisual to whether differentiates; The channel image information that receives by the outer channel of frequency band is the outer data processing division of receiver side frequency band that system information, accident signaling system and regional social information shunt processing; For the audiovisual user can the audiovisual video, audio frequency and data flow, to its audio/video decoding part of deciphering; The regional social information that handles in the outer data processing division of receiver side frequency band is carried out the HTML handling part that HTML is handled; To the vision signal of from the audio/video decoding part, deciphering, be treated to the form that accords with display part, and the regional social information that handles in the HTML handling part is carried out processing image processor and the graphics processing part that screen display is handled; The display part that image of handling in handling image processor and graphics processing part and regional social information show.
4, the method that area information is provided in the digital cable broadcast system is characterized in that comprising the steps:
By the outer channel of frequency band, regional social information data are carried out receiving step;
To regional social information arrival notice information, in having wired function digit television set display part, carry out step display;
When whether audiovisual shows to arrival information,, then arrival information is carried out step display with the screen form if carry out audiovisual;
If finish audiovisual or do not carry out audiovisual, then whether arrival information is stored and carry out step display;
According to audiovisual user's selection, step is stored or deleted to arrival information.
5, the method that area information is provided in the digital cable broadcast system according to claim 3, it is characterized in that in digital cable broadcast system, the message catalog that can provide teletrician self is sent to has wired function digit television set, and the audiovisual user selects information that the user needs in the catalogue that is transmitted after, only transmit the regional social information that the user selects, perhaps in having wired function digit TV, only the corresponding to information of regional social information catalogue to selecting with the user shows regional social information arrival notice information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610056722 CN101035245A (en) | 2006-03-07 | 2006-03-07 | Digital wired broadcast system and the method for providing area information using the same |
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| CN 200610056722 CN101035245A (en) | 2006-03-07 | 2006-03-07 | Digital wired broadcast system and the method for providing area information using the same |
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| CN101035245A true CN101035245A (en) | 2007-09-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707719B (en) * | 2009-11-02 | 2012-08-22 | 深圳市龙视传媒有限公司 | Analyzer, analysis system and analysis method of advertisement code stream |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707719B (en) * | 2009-11-02 | 2012-08-22 | 深圳市龙视传媒有限公司 | Analyzer, analysis system and analysis method of advertisement code stream |
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