CN1226868C - Multimedia player capable of simutaneously playing various kinds of programs - Google Patents
Multimedia player capable of simutaneously playing various kinds of programs Download PDFInfo
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- CN1226868C CN1226868C CNB021061947A CN02106194A CN1226868C CN 1226868 C CN1226868 C CN 1226868C CN B021061947 A CNB021061947 A CN B021061947A CN 02106194 A CN02106194 A CN 02106194A CN 1226868 C CN1226868 C CN 1226868C
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Abstract
The present invention relates to a multimedia playing device which can simultaneously present various programs and comprises a presenting control unit, a receiving unit, a demodulation unit, a decoding processor, a video information display format coding unit and a digital/analog converter, wherein the receiving unit converts a radio frequency signal to an intermediate frequency signal and outputs the intermediate frequency signal after digitization; the demodulation unit demodulates the signal output by the receiving unit, and then output the demodulated signal; the decoding processor divides the signal output by the demodulation unit into multiple tasks to form a plurality of image data streams, auxiliary data streams and voice frequency data streams, and then outputs the data streams which become an image data signal, an auxiliary data signal and an audio frequency data signal after decoding so that the image data signal and the auxiliary data signal are further integrated and output; the video information display format coding unit codes the integrated image data signal and auxiliary data signal to form a vested display format, and the image data signal and the auxiliary data signal are converted into an analog form by digitals, then are output to a video information display device and are further presented; the digital/analog converter converts the audio frequency data signal into the analog form, and outputs the audio frequency data signal to an audio frequency output device.
Description
Technical field
The present invention relates to a kind of multimedia playing apparatus, the particularly a kind of multimedia playing apparatus that can play multiple program simultaneously, the especially a kind of playing device that can play the digital television apparatus (Digital TV apparatus) of multiple program simultaneously.
Background technology
Digital Television such as high definition digital television (High Definition Television, HDTV), be to utilize standard compression counting method (standard compression algorism), as: MPEG, original height is separated the bit data stream (bitstream) that clear video-audio data converts compression to, its be a string can be by a receiving system performed instruction and information, in order to recover to produce raw video picture and sound.When the transmission data, can can do significant communication with communication apparatus and computer mechanism for making the HDTV device, audio-visual bit data is split into the package (packet) of fixed size usually, go up common mistake and can utilize package identification code (Identifier) to overcome transmission, gauge outfit (header) and descriptor (descriptor) are finished data synchronization and autgmentability.
In the digital TV field newly developed,, will cause the application entity of more reform sexual functions to produce along with development of technology.And these novel application entities can reach the irrealizable effect of simulated television in the past.Wherein, several programs are utilized single data flow transmission, and by making it present the criterion that is a practicality simultaneously after the receiving system acceptance.Receiving system needs some program in this single data flow is processed, and plays in a video display device simultaneously with the program that will select.This makes when the audience can simultaneously watch a program same, can also simultaneously observe another program dynamically.For instance, spectators also wish simultaneously to note other in progress quotations on the stock market when watching that a concert is relayed simultaneously.And if can will present at one time several program conception realize, then can solve need not stall platform puzzlement, and avoid interference the program of appreciating.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of multimedia playing apparatus that presents multiple program simultaneously, is applicable to that the radiofrequency signal that will have the transmitting data stream of some programme informations according to user's selection is presented in video display device and the audio output device with set display format; This multimedia playing apparatus comprises:
One presents control unit, exports the selection control signal according to this user's selection;
One receiving element in order to accepting this radiofrequency signal, and converts this radiofrequency signal to intermediate-freuqncy signal, and its digitlization is exported;
One demodulating unit, the signal of exporting for this receiving element according to set modulation counting method carries out demodulation and exports; Also comprise:
One decoding processing unit, select control signal according to this, become some imaging data streams, auxiliary data flow and audio data stream and export and the signal that this demodulating unit is exported is separated multitask, go forward side by side row decoding and become image data signal, auxiliary data signal, voiceband data signal, and then this image data signal and auxiliary data signal integrated and export be integrated image data signal and auxiliary data signal;
One digital/analog converter in order to this voiceband data signal is become analog form by digital translation, and exports it to this audio output device, and presents; And
One video signal display format coding unit in order to this is integrated image data signal and auxiliary data signal coding, becomes this set display format, and is analog form by digital translation, and export this video display device to, and then present.
At first, present control unit and export the selection control signal according to this user's selection.Simultaneously, receiving element is accepted to collect the radiofrequency signal of multiple programme information in a transmitting data stream, and converts radiofrequency signal to intermediate-freuqncy signal, and exports after the digitlization.Then, the signal exported for receiving element according to set modulation counting method of demodulating unit carries out demodulation and exports; The decoding processing unit is according to selecting control signal, become some imaging data streams, auxiliary data flow and audio data stream and export and the signal that demodulating unit is exported is separated multitask, go forward side by side row decoding and become image data signal, auxiliary data signal, voiceband data signal, and then this image data signal and auxiliary data signal integrated and export be integrated image data signal and auxiliary data signal.At last, video signal display format coding unit becomes above-mentioned set display format with this image data signal that is integrated and auxiliary data signal coding, and is that analog form exports this video display device to by digital translation, and then presents.Simultaneously, digital/analog converter becomes analog form with voiceband data signal by digital translation, and exports it to audio output device, and presents.
Further, described decoding processing unit comprises:
One transmission signal decoding unit is selected control signal according to this, becomes some imaging data streams, auxiliary data flow and audio data stream and exports and the signal that this demodulating unit is exported is separated multitask;
Some image decodings unit is in order to decipher and the image output data-signal this imaging data stream;
One auxiliary data decoding unit is exported auxiliary data signal in order to this auxiliary data flow is deciphered;
One audio coding unit is in order to decipher and the outputting audio data signal this audio data stream; And
One video signal display processing unit is selected control signal according to this, and this image data signal and auxiliary data signal integrated and exports and be integrated image data signal and auxiliary data signal.
Further, described video signal display processing unit comprises:
Some local format converting units in order to receiving this image data signal and auxiliary data signal respectively accordingly, and are selected control signal according to this, format to handle and export;
One positioning treatment apparatus in order to selecting control signal according to this, and is integrated image data signal and auxiliary data signal that this local format converting unit is exported;
One imaged frame apparatus for temporary storage is exported in order to accept and to store the signal that this positioning treatment apparatus exports; And
One universe format conversion unit, in order to selecting control signal according to this, and the signal that this imaged frame apparatus for temporary storage is exported is formatd processing.
The present invention also provides a kind of multimedia playing apparatus that presents multiple program simultaneously, be applicable to that the radiofrequency signal that will have the transmitting data stream of some programme informations according to user's selection is presented in video display device and the audio output device with set display format, this multimedia playing apparatus comprises:
One presents control unit, exports the selection control signal according to this user's selection;
One receiving element in order to accepting this radiofrequency signal, and converts this radiofrequency signal to intermediate-freuqncy signal, and its digitlization is exported;
One demodulating unit, the signal of exporting for this receiving element according to set modulation counting method carries out demodulation and exports; Also comprise:
One transmission signal decoding unit is selected control signal according to this, becomes some imaging data streams, auxiliary data flow and audio data stream and exports and the signal that this demodulating unit is exported is separated multitask;
Some image decodings unit is in order to decipher and the image output data-signal this imaging data stream;
One auxiliary data decoding unit is exported auxiliary data signal in order to this auxiliary data flow is deciphered;
One audio coding unit is in order to decipher and the outputting audio data signal this audio data stream;
Digital/analog converter in order to this voiceband data signal is become analog form by digital translation, and exports it to this audio output device, and presents;
One video signal display processing unit is selected control signal according to this, and this image data signal and auxiliary data signal integrated and exports image data signal and the auxiliary data signal that is integrated; And
One video signal display format coding unit with this image data signal that is integrated and auxiliary data signal coding, becomes this set display format, and is analog form by digital translation, and exports this video display device to, and then presents.
Described video signal display processing unit comprises:
Some local format converting units in order to receiving this image data signal and auxiliary data signal respectively accordingly, and are selected control signal according to this, format to handle and export;
One positioning treatment apparatus in order to selecting control signal according to this, and gives positioning integration with image data signal and the auxiliary data signal that this local format converting unit is exported;
One imaged frame apparatus for temporary storage is exported in order to accept and to store the signal that this positioning treatment apparatus exports; And
One universe format conversion unit, in order to selecting control signal according to this, and the signal that this imaged frame apparatus for temporary storage is exported is formatd processing.
Described voice data can be an audio program independently, also can be the related audio data corresponding with this selecteed video program.
Any of described auxiliary data and this video program all can be described video signal and presents unique picture that device presents.
Advantage of the present invention is; The video program of multiple choices of the present invention and this auxiliary data really can present and comply with different arrangement modes according to the above-mentioned control that presents control unit, to be presented in simultaneously on the same video display device, reach the effect of expection.
Description of drawings
Fig. 1 is a multimedia playing apparatus schematic diagram of the present invention;
Fig. 2 is the structure chart of the video signal display processing unit among Fig. 1;
Fig. 3-1, Fig. 3-2 and Fig. 3-3 are the possible player method schematic diagram of multimedia playing apparatus of the present invention.
The number in the figure explanation
2～audio output device
4～video display device
6～receiving element
8～demodulating unit
10～transmission signal decoding unit
12～auxiliary data decoding unit
14,16,18～image decoding unit
20～audio coding unit
22～video signal display processing unit
24～video signal display format coding unit
26～digital/analog converter
28～present control unit
50～decoding processing unit
200,202,204 and 206～local format converting unit
208～positioning treatment apparatus
210～imaged frame apparatus for temporary storage
212～universe format conversion unit
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
See also Fig. 1, be multimedia playing apparatus schematic diagram of the present invention.Multimedia playing apparatus of the present invention is applicable to Digital Television, and has a video display device 4 and an audio output device 2, can receive the radiofrequency signal that comprises one of several programme informations transmitting data stream.As shown in fig. 1, multimedia playing apparatus of the present invention comprises: a receiving element 6, one demodulating units 8, one decoding processing unit 50, one digital/analog converters 26, one video signal display format coding units 24 and present control unit 28.
At first, present the selection of control unit 28, and control signal is selected in output according to the user.Simultaneously, receiving element 6 accepts to collect radio frequency (Radio frequency) signal of multiple programme information in a transmitting data stream (transport stream), and convert this radiofrequency signal to intermediate frequency (Intermediate Frequency) signal by rf frequency signal, and with the output of its digitlization (digitize) back.Then, the signal exported of 8 pairs of receiving elements 6 of demodulating unit carries out demodulation.Demodulation method is different because of different transmission mediums, and for example: VSB or COFDM are used in land (terrestrial) transmission, and QAM is used in wired (cable) transmission, and directly QPSK is used in satellite (direct satellite) transmission, and each uses different demodulation forms.Decoding processing unit 50, according to selecting control signal, become several imaging data streams, auxiliary data flow and audio data stream and export and decipher and the signal that demodulating unit 8 is exported is separated multitask, become image data signal V1, V2 and V3, auxiliary data signal Ax and voiceband data signal, and then this image data signal and auxiliary data signal given positioning integration and export being integrated image data signal and auxiliary data signal.At last, video signal display format coding unit 24 is encoded this image data signal, auxiliary data signal according to the established form of video display device 4.For example: traditional video screen is used NTSC or PAL, traditional computer utilization RGB etc., video signal display format coding unit 24 is weaved into arbitrary this specific format with image data signal and the auxiliary data signal integrated, and is that analog form presents to export in the video display device 4 with this signal by digital translation.Simultaneously, digital/analog converter 26 becomes analog form with voiceband data signal by digital translation, plays to export audio output device 2 to.
Decoding processing unit 50 of the present invention comprises a transmission signal decoding unit 10, one auxiliary data decoding units 12, several image decoding unit 14,16,18, audio coding unit 20, and video signal display processing unit 22.Transmission signal decoding unit 10 is according to presenting the selection control signal, in the signal of mode of separating multitask by demodulating unit 8 outputs, choose the data packet of several programs, extract: an auxiliary data flow (Auxiliary data stream), several imaging data streams (Videodata stream) and an audio data stream (Audio data stream), and each data flow is exported to respectively in the decoding unit of correspondence.This audio data stream can be an audio program independently, also can be and one of this imaging data stream relevant voice data.Same, auxiliary data flow can be the information that is independent of video program, as animation, service such as pattern or literal information (service information), or with the video program information corresponding, as the data information such as captions of video program, and instructional information such as program contents.
Image decoding unit 14,16,18, auxiliary data decoding unit 12 and audio coding unit 20 are carried out decoding and are exported the image data signal V1 of decoding, V2 and V3, auxiliary data signal Ax and voiceband data signal respectively.Digital/analog converter 26 becomes simulation with voiceband data signal by digital translation, and exports audio output device 2 to and make former sound reproducing, plays.Auxiliary data decoding unit 12, image decoding unit 14,16,18 in V2 and the V3 input video signal display processing unit 22, carry out integration processing with auxiliary data signal Ax and image data signal V1.Video signal display processing unit 22 is according to presenting the selection control signal, decision video program data-signal V1, mutual the putting in order to be presented in a video display device 4 of sharing simultaneously when overlapping of the position location of V2 and V3 and auxiliary data signal Ax and this.For example: when presenting of program data was overlapping, this became the background program that program, and that program should be placed on foremost etc.
It among Fig. 2 the structure chart of video signal display processing unit 22.As shown in the figure, video signal display processing unit 22 comprises following assembly:
Several local format converting units 200,202,204 and 206 correspond respectively to and receive video program data-signal V1, V2, V3 and auxiliary data signal Ax.Local format converting unit 200,202,204 and 206 is according to selecting control signal CTLV1, CTLV2, and CTLV3 and CTLAx, respectively to this image data signal V1 of indivedual correspondences, V2, V3 and this auxiliary data signal Ax format processing.For example: image is amplified or dwindle, with the angle rotation of image or add emphasis effect etc.The image of each program is all according to corresponding to selecting control signal CTLV1, CTLV2, and CTLV3 and CTLAx present different forms;
One positioning treatment apparatus 208 in order to accepting the signals of local format converting unit 200,202,204 and 206 outputs, and preferentially presents order during according to the position location of selecting control signal CTLOP to determine that these data present and overlapping arrangement;
One imaged frame apparatus for temporary storage 210 is in order to accept and to store the output signal of positioning treatment apparatus 208;
And a universe format conversion unit 212, in order to according to selecting control signal CTLG, with the signal formatization of imaged frame apparatus for temporary storage 210 outputs.Universe format conversion unit 212 has identical function with above-mentioned local format converting unit 200,202,204 and 206, but universe format conversion unit 212 is to carry out whole format conversion at the picture after integrating.
Fig. 3-1, Fig. 3-2 and Fig. 3-3 are the possible player method schematic diagram of multimedia playing apparatus of the present invention.As shown in Fig. 3-1, image data signal V 1, V2, V3 and auxiliary data signal Ax are presented on the screen 30 of video display device 4 simultaneously.Image data signal V 1, V2, V3 is overlapping, is background frame with V1, and auxiliary data Ax is the relevant information of signal of video signal V1.Among Fig. 3-3, single signal of video signal V1 and relevant satellite information Ax thereof are presented in video signal and are shown on the screen 30 of device 4.In Fig. 3-3, only a signal of video signal or auxiliary data are presented on the screen 30.Fig. 3-the 3rd is the example explanation with the single auxiliary data Ax that presents.
Though the present invention is with preferred embodiment openly as above, it is not to be used for limiting the present invention, anyly has the knack of this technical matters person, without departing from the spirit and scope of the present invention, and when doing to change and retouching.Therefore, protection scope of the present invention should be as the criterion with the protection range that claims were defined of present patent application.
Claims (4)
1. one kind is applicable to Digital Television and can presents the multimedia playing apparatus of multiple program simultaneously, be applicable to that the radiofrequency signal that will have the transmitting data stream of some programme informations according to user's selection is presented in video display device and the audio output device with set display format, this multimedia playing apparatus comprises:
One presents control unit, exports the selection control signal according to this user's selection;
One receiving element in order to accepting this radiofrequency signal, and converts this radiofrequency signal to intermediate-freuqncy signal, and its digitlization is exported;
One demodulating unit, the signal of exporting for this receiving element according to set modulation counting method carries out demodulation and exports; It is characterized in that, also comprise:
One transmission signal decoding unit is selected control signal according to this, becomes some imaging data streams, auxiliary data flow and audio data stream and exports and the signal that this demodulating unit is exported is separated multitask;
Some image decodings unit is in order to decipher and the image output data-signal this imaging data stream;
One auxiliary data decoding unit is exported auxiliary data signal in order to this auxiliary data flow is deciphered;
One audio coding unit is in order to decipher and the outputting audio data signal this audio data stream;
Digital/analog converter in order to this voiceband data signal is become analog form by digital translation, and exports it to this audio output device, and presents;
One video signal display processing unit is selected control signal according to this, and this image data signal and auxiliary data signal integrated and exports image data signal and the auxiliary data signal that is integrated; And
One video signal display format coding unit with this image data signal that is integrated and auxiliary data signal coding, becomes this set display format, and is analog form by digital translation, and exports this video display device to, and then presents.
2. the multimedia playing apparatus that can present multiple program simultaneously as claimed in claim 1 is characterized in that, this video signal display processing unit comprises:
Some local format converting units in order to receiving this image data signal and auxiliary data signal respectively accordingly, and are selected control signal according to this, format to handle and export;
One positioning treatment apparatus in order to selecting control signal according to this, and gives positioning integration with image data signal and the auxiliary data signal that this local format converting unit is exported;
One imaged frame apparatus for temporary storage is exported in order to accept and to store the signal that this positioning treatment apparatus exports; And
One universe format conversion unit, in order to selecting control signal according to this, and the signal that this imaged frame apparatus for temporary storage is exported is formatd processing.
3. the multimedia playing apparatus that can present multiple program simultaneously as claimed in claim 1 is characterized in that: this voice data can be an audio program independently, also can be the related audio data corresponding with this selecteed video program.
4. the multimedia playing apparatus that can present multiple program simultaneously as claimed in claim 1 is characterized in that: any of described auxiliary data and this video program all can be described video signal and presents unique picture that device presents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021061947A CN1226868C (en) | 2002-04-08 | 2002-04-08 | Multimedia player capable of simutaneously playing various kinds of programs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021061947A CN1226868C (en) | 2002-04-08 | 2002-04-08 | Multimedia player capable of simutaneously playing various kinds of programs |
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| Publication Number | Publication Date |
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| CN1450800A CN1450800A (en) | 2003-10-22 |
| CN1226868C true CN1226868C (en) | 2005-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB021061947A Expired - Fee Related CN1226868C (en) | 2002-04-08 | 2002-04-08 | Multimedia player capable of simutaneously playing various kinds of programs |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060115465A (en) | 2005-05-06 | 2006-11-09 | 주식회사 팬택앤큐리텔 | Apparatus for receiving a digital multimedia broadcasting |
| CN1940858B (en) * | 2005-09-26 | 2011-06-15 | 深圳市朗科科技股份有限公司 | Method of Multi-task realization of media player |
| TWI651002B (en) * | 2017-08-30 | 2019-02-11 | 北京集創北方科技股份有限公司 | Signal transmission device |
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Granted publication date: 20051109 Termination date: 20210408 |