CN101453594A - Method and apparatus implementing picture-in-picture and instant playing and recording function by mobile phone television - Google Patents
Method and apparatus implementing picture-in-picture and instant playing and recording function by mobile phone television Download PDFInfo
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- CN101453594A CN101453594A CNA2007101719233A CN200710171923A CN101453594A CN 101453594 A CN101453594 A CN 101453594A CN A2007101719233 A CNA2007101719233 A CN A2007101719233A CN 200710171923 A CN200710171923 A CN 200710171923A CN 101453594 A CN101453594 A CN 101453594A
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Abstract
The invention relates to a method and a device for realizing picture-in-picture and play-and-record functions in a mobile TV. Two intermediate frequency signals from two tuners are sent to two demodulators respectively; the demodulators perform analog-to-digital conversion, OFDM demodulation and decoding on the intermediate frequency signals of two selected frequency points, output TS flow signals TS1 and TS2 of two television programs, and send the flow signals to a TP demodulation multiplexer respectively; and the TP demodulation multiplexer receives an instruction of a system according to requirement and condition of a user, and sends the TS flow signals TS1 and TS2 of the television programs required by the user to an audio-video decoder or a Nand flash memory. By adopting the method of double tuners and double demodulators, the user can randomly watch two television programs at the same time, and can also record the other program at the same time of watching one program, so the method meets the requirement of the user on acquisition of multiple kinds of information, and is not limited by whether media transmission is on the same frequency point.
Description
Technical field
The present invention relates to a kind of mobile TV and realize picture-in-picture and promptly broadcast to be the method and the device of recording function, belong to the audio frequency and video technical field.
Background technology
Mobile TV ideally combines the function of mobile phone and TV (mobile TV), and it is subjected to user's favorable comment deeply with high-quality audio frequency and video, portability and promptness.Mobile TV is just like a raging fire at present, and the standard of various mobile TVs has obtained using widely.Difference according to its code encoding/decoding mode and transmission technology can be divided into: T-DMB, DVB-H and CMMB etc.
The implementation method of mobile TV as shown in Figure 1, tuner (Tuner) is accepted from aerial digital television signal (radiofrequency signal) by antenna, tuner (Tuner) is demodulated to intermediate-freuqncy signal with radiofrequency signal.Demodulator (Demodulator) is finished analog-to-digital conversion, OFDM and is separated and be in harmonious proportion the separating of decode channel (frequency) of digital audio broadcasting (DAB) and be in harmonious proportion the decoding of digital audio broadcasting (DAB).Behind demodulator (Demodulator), become TS stream (TransportStream), this TS stream comprises audio frequency and video and the data message that all are loaded in this frequency.TP demodulation multiplexer in the multimedia chip (Transport Stream Packet Demux) is accepted TS stream and according to condition receiving system (CAS, ConditionalAccess System) TS stream is deciphered and demultiplexing.Through the TS stream behind deciphering and the demultiplexing is the TS stream of each sound, video or data, according to user's needs it is sent to then and preserves in the Nand flash memory or send into sound, Video Decoder, send into audio frequency output module and LCD MODULE (LCM) after the decoding again.
Mobile TV can be realized televising, television recording, play and record same program simultaneously now.Can also realize by the editor of recording TV program and processing.Among present two ripe big standard T-DMB, the DVB-H of industry, can both on same frequency, transmit many covers video, audio frequency and data services.Can also be when playing Digital Television by handling, the information (data service) that the user is paid close attention to sends the user to by the form of captions.
Yet, be the information age now, a large amount of various information (sound, video, data etc.) are covered the sky and the earth, and make the user may need to obtain at one time two different information.Need watch physical culture and finance and economics program at one time such as the user, perhaps the user need record sports cast get off when watching the finance and economics program.Along with closing on of Beijing Olympic Games, it is surging that the user need obtain the requirement meeting of two kinds of different information simultaneously.
T-DMB generally is that two or three cover video adds one or two cover audio frequency and data service.DVB-H is because bandwidth ratio T-DMB is wide, and information transmitted can be more than T-DMB on same frequency for it.If the needed information of user is just transmitted on same frequency, the cooperation by software and hardware can realize picture-in-picture and promptly broadcast to be recording function so.But often the needed information of user differs to establish a capital on same frequency and transmits.
Summary of the invention
Whether the object of the invention is to provide a kind of can realize picture-in-picture and promptly broadcast to be the method and the device of recording function in mobile TV, satisfy the demand that the user obtains multiple information simultaneously, and be not subjected to media delivery in the restriction of same frequency.
To achieve these goals, the present invention has adopted following technical scheme:
Mobile TV is realized picture-in-picture and promptly broadcast is the device of recording function, comprise tuner one (Tuner1), tuner two (Tuner2), demodulator one (Demodulator1), demodulator two (Demodulator2), TP demodulation multiplexer (TP Demux), condition receiving system (CAS), audio/video decoder (A/V Decoder), Nand flash memory, the audio frequency output module, LCD MODULE (LCM), multimedia chip (Multimedia Processor), multimedia chip comprises TP demodulation multiplexer and audio/video decoder, come self-tuner one, two intermediate-freuqncy signals of tuner two are sent into demodulator one respectively, in the demodulator two, intermediate-freuqncy signal through demodulator one and two pairs of selected two frequencies of demodulator is carried out the demodulation sign indicating number, the TS stream signal TS1 and the TS2 of two TV programme of output, these two TS stream signals comprise all information of this frequency; TS1 and TS2 send into respectively in the TP demodulation multiplexer, and the TP demodulation multiplexer is according to the instruction of user's needs and condition receiving system, and the TS stream signal TS1 and the TS2 of the required TV programme of obtaining of user sent in audio/video decoder or the Nand flash memory.
After described TS1 and TS2 are sent into audio/video decoder simultaneously, through video decode, send in the graphics accelerator in the multimedia chip, graphics accelerator is sent the two-path video data into the corresponding liquid crystal display module according to the zone of the demonstration of TS1 that sets and TS2, voice data among described TS1 and the TS2 is through behind the audio decoder, can be sent in the audio frequency output module according to user's the audio signal that is provided with TS1 and TS2 two-way or single channel, realize the function of picture-in-picture.
TS stream signal TS1 and TS2 with two TV programme of TP demodulation multiplexer output, instruction according to user's needs and condition receiving system, the TV signal TS1 that needs are play sends into audio/video decoder, preserve in the Nand flash memory and other one tunnel TV signal TS2 sent into, realize promptly broadcasting the i.e. function of record.
Realize that mobile TV is realized picture-in-picture and promptly broadcast is the method for recording function, comprises the steps:
Step 1, enter Digital Television, opening picture-in-picture or promptly broadcasting is recording function;
Step 2, open the power supply of tuner one, tuner two, demodulator one and demodulator two, and they are carried out initialization;
Step 3, multimedia chip dispose tuner one and tuner two according to user's needs program place frequency;
Step 4, multimedia chip receive the TS stream from demodulator one and demodulator two, and resolve TS stream, according to user's needs, the TS of required program stream are extracted;
Step 5, judge whether to use picture-in-picture function, if the step 6 of entering enters step 7 if not;
Step 6, the TS of two-way TV programme stream signal TS1 and TS2 are sent into audio/video decoding simultaneously;
Step 7, the road TV programme TS1 stream that will record are sent into Nand flash memory simultaneously, and one tunnel TV programme TS2 stream of broadcasting is sent into audio/video decoder;
Step 8, decoded data are sent into audio frequency output module and LCD MODULE.
Dual tuner among employing the present invention adds the method for two demodulators, can watch any two TV programme (picture-in-picture) simultaneously, when also can watch a program, record any program (promptly broadcasting i.e. record), satisfy the demand that the user obtains multiple information simultaneously, and be not subjected to media delivery whether in the restriction of same frequency.
Description of drawings
Fig. 1 is the system architecture schematic diagram of prior art mobile TV
Fig. 2 is the system architecture schematic diagram of realizing picture-in-picture and promptly broadcasting the mobile TV that is recording function of the present invention
Fig. 3 is the software preparation process figure of mobile TV of the present invention
Embodiment
Be the system architecture schematic diagram of prior art mobile TV as shown in Figure 2.System of the present invention comprises tuner 1, tuner 22, demodulator 1, demodulator 24, TP demodulation multiplexer 5, condition receiving system 6, audio/video decoder 7, Nand flash memory 8, audio frequency output module 9, LCD MODULE 10, multimedia chip 11, multimedia chip 11 comprises TP demodulation multiplexer 5 and audio/video decoder 7, come self-tuner 1, two intermediate-freuqncy signals of tuner 22 are sent into demodulator 1 respectively, in the demodulator 24, intermediate-freuqncy signal through demodulator 1 and 24 pairs of selected two frequencies of demodulator is carried out the demodulation sign indicating number, the TS stream signal TS1 and the TS2 of two TV programme of output, these two TS stream signals comprise all information of this frequency; TS1 and TS2 send into 5 li of TP demodulation multiplexers respectively, TP demodulation multiplexer 5 is according to the instruction of user's needs and condition receiving system 6, and the TS stream signal TS1 and the TS2 of the required TV programme of obtaining of user sent in audio/video decoder 7 or the Nand flash memory 8.
After TS1 and TS2 are sent into audio/video decoder 7 simultaneously, through video decode, send in the graphics accelerator of 11 li of multimedia chips, graphics accelerator is sent the two-path video data into corresponding liquid crystal display module 10 according to the zone of the demonstration of TS1 that sets and TS2, voice data among described TS1 and the TS2 is through behind the audio decoder, can be sent in the audio frequency output module 9 according to user's the audio signal that is provided with TS1 and TS2 two-way or single channel, realize the function of picture-in-picture.
TS stream signal TS1 and TS2 with two TV programme of TP demodulation multiplexer 5 output, instruction according to user's needs and condition receiving system 6, the TV signal TS1 that needs are play sends into audio/video decoder 7, preserve in the Nand flash memory 8 and other one tunnel TV signal TS2 sent into, realize promptly broadcasting the i.e. function of record.
Fig. 3 left side is a software approach flow chart of realizing the mobile TV playing scheme in the prior art, be equal to adopt apparatus of the present invention after, the user only has under the situation of demand one tunnel TV programme, the implementation method flow process of selecting single programs to play.
Fig. 3 right side then is that the present invention adopts dual tuner to add the software preparation process figure of mobile TV of the method for two demodulators, and as shown in Figure 3, the present invention realizes that mobile TV is realized picture-in-picture and promptly broadcast is the method for recording function, it is characterized in that, comprises the steps:
Step 1, enter Digital Television, opening picture-in-picture or promptly broadcasting is recording function;
Step 2, open the power supply of tuner 1, tuner 22, demodulator 1 and demodulator 24, and they are carried out initialization;
Step 3, multimedia chip 11 dispose tuner 1 and tuner 22 according to user's needs program place frequency;
Step 4, multimedia chip receive the TS stream from demodulator 1 and demodulator 24, and resolve TS stream, according to the program of user's needs, the TS of required program stream are extracted;
Step 5, judge whether to use picture-in-picture function, if the step 6 of entering enters step 7 if not;
Step 6, the TS of two-way TV programme stream signal TS1 and TS2 are sent into audio/video decoding simultaneously;
Step 7, the road TV programme TS1 stream that will record are sent into Nand flash memory 8 simultaneously, and one tunnel TV programme TS2 stream of broadcasting is sent into audio/video decoder 7;
Step 8, decoded data are sent into audio frequency output module 9 and LCD MODULE 10.
Claims (4)
1, a kind of mobile TV is realized picture-in-picture and promptly broadcast is the device of recording function, comprise tuner one (1), tuner two (2), demodulator one (3), demodulator two (4), TP demodulation multiplexer (5), condition receiving system (6), audio/video decoder (7), Nand flash memory (8), audio frequency output module (9), LCD MODULE (10), multimedia chip (11), multimedia chip (11) comprises TP demodulation multiplexer (5) and audio/video decoder (7), it is characterized in that, come self-tuner one (1), two intermediate-freuqncy signals of tuner two (2) are sent into demodulator one (3) respectively, in the demodulator two (4), through demodulator one (3) and demodulator two (4) intermediate-freuqncy signal of selected two frequencies is carried out the demodulation sign indicating number, the TS stream signal TS1 and the TS2 of two TV programme of output, these two TS stream signals comprise all information of this frequency; TS1 and TS2 send into TP demodulation multiplexer (5) lining respectively, TP demodulation multiplexer (5) is according to the instruction of user's needs and condition receiving system (6), and the TS stream signal TS1 and the TS2 of the required TV programme of obtaining of user sent in audio/video decoder (7) or the Nand flash memory (8).
2, mobile TV as claimed in claim 1 is realized picture-in-picture and promptly broadcast is the device of recording function, it is characterized in that, after described TS1 and TS2 are sent into audio/video decoder (7) simultaneously, through video decode, send in the graphics accelerator of multimedia chip (11) lining, graphics accelerator is sent the two-path video data into corresponding liquid crystal display module (10) according to the zone of the demonstration of TS1 that sets and TS2, voice data among described TS1 and the TS2 is through behind the audio decoder, can be sent in the audio frequency output module (9) according to user's the audio signal that is provided with TS1 and TS2 two-way or single channel, realize the function of picture-in-picture.
3, mobile TV as claimed in claim 1 is realized picture-in-picture and promptly broadcasts to be the device of recording function, it is characterized in that, TS stream signal TS1 and TS2 with two TV programme of TP demodulation multiplexer (5) output, instruction according to user's needs and condition receiving system (6), the TV signal TS1 that needs are play sends into audio/video decoder (7), preserve in the Nand flash memory (8) and other one tunnel TV signal TS2 sent into, realize promptly broadcasting the i.e. function of record.
4, a kind ofly use the described mobile TV of claim 1 to realize picture-in-picture and promptly broadcast to be that the device of recording function realizes that mobile TV is realized picture-in-picture and promptly broadcast is the method for recording function, to it is characterized in that, comprise the steps:
Step 1, enter Digital Television, opening picture-in-picture or promptly broadcasting is recording function;
Step 2, open the power supply of tuner one (1), tuner two (2), demodulator one (3) and demodulator two (4), and they are carried out initialization;
Step 3, multimedia chip (11) dispose tuner one (1) and tuner two (2) according to user's needs program place frequency;
Step 4, multimedia chip receive the TS stream from demodulator one (3) and demodulator two (4), and resolve TS stream, according to the program of user's needs, the TS of required program stream are extracted;
Step 5, judge whether to use picture-in-picture function, if the step 6 of entering enters step 7 if not;
Step 6, the TS of two-way TV programme stream signal TS1 and TS2 are sent into audio/video decoding simultaneously;
Step 7, the road TV programme TS1 stream that will record are sent into Nand flash memory (8) simultaneously, and one tunnel TV programme TS2 stream of broadcasting is sent into audio/video decoder (7);
Step 8, decoded data are sent into audio frequency output module (9) and LCD MODULE (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101719233A CN101453594A (en) | 2007-12-07 | 2007-12-07 | Method and apparatus implementing picture-in-picture and instant playing and recording function by mobile phone television |
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| CNA2007101719233A CN101453594A (en) | 2007-12-07 | 2007-12-07 | Method and apparatus implementing picture-in-picture and instant playing and recording function by mobile phone television |
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| CN101453594A true CN101453594A (en) | 2009-06-10 |
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| CNA2007101719233A Pending CN101453594A (en) | 2007-12-07 | 2007-12-07 | Method and apparatus implementing picture-in-picture and instant playing and recording function by mobile phone television |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088632A (en) * | 2010-12-09 | 2011-06-08 | 深圳国微技术有限公司 | Condition receiving apparatus capable of supporting two program sources and implementation method thereof |
| CN102497598A (en) * | 2011-12-09 | 2012-06-13 | 上海全景数字技术有限公司 | Remote computer control system and method based on digital television |
| WO2017220017A1 (en) * | 2016-06-23 | 2017-12-28 | 深圳创维数字技术有限公司 | Method and system for receiving signal sources |
| CN107707949A (en) * | 2017-09-26 | 2018-02-16 | 深圳佳力拓科技有限公司 | It is a kind of to support cable TV signal and ISDB T set-top-box system and method |
| CN108566556A (en) * | 2018-03-06 | 2018-09-21 | 深圳佳力拓科技有限公司 | A kind of set-top-box system and method for supporting two-way ground digital television broadcast |
| CN108965953A (en) * | 2017-12-29 | 2018-12-07 | 深圳佳力拓科技有限公司 | It is a kind of to receive DVB-C and DTMB simple two-way signal set-top-box system and method simultaneously |
| CN109640121A (en) * | 2018-12-21 | 2019-04-16 | 深圳创维－Rgb电子有限公司 | A kind of television system, programme signal processing method, device, equipment and medium |
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2007
- 2007-12-07 CN CNA2007101719233A patent/CN101453594A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088632A (en) * | 2010-12-09 | 2011-06-08 | 深圳国微技术有限公司 | Condition receiving apparatus capable of supporting two program sources and implementation method thereof |
| CN102497598A (en) * | 2011-12-09 | 2012-06-13 | 上海全景数字技术有限公司 | Remote computer control system and method based on digital television |
| WO2017220017A1 (en) * | 2016-06-23 | 2017-12-28 | 深圳创维数字技术有限公司 | Method and system for receiving signal sources |
| CN107707949A (en) * | 2017-09-26 | 2018-02-16 | 深圳佳力拓科技有限公司 | It is a kind of to support cable TV signal and ISDB T set-top-box system and method |
| CN108965953A (en) * | 2017-12-29 | 2018-12-07 | 深圳佳力拓科技有限公司 | It is a kind of to receive DVB-C and DTMB simple two-way signal set-top-box system and method simultaneously |
| CN108566556A (en) * | 2018-03-06 | 2018-09-21 | 深圳佳力拓科技有限公司 | A kind of set-top-box system and method for supporting two-way ground digital television broadcast |
| CN109640121A (en) * | 2018-12-21 | 2019-04-16 | 深圳创维－Rgb电子有限公司 | A kind of television system, programme signal processing method, device, equipment and medium |
| WO2020124965A1 (en) * | 2018-12-21 | 2020-06-25 | 深圳创维－Rgb电子有限公司 | Television system, program signal processing method and apparatus, device and medium |
| CN110012345A (en) * | 2019-03-18 | 2019-07-12 | 海信电子科技（深圳）有限公司 | A kind of channel switching method and television terminal |
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