CN101088286A - Method and apparatus for seamlessly switching reception between multimedia streams in a wireless communication system - Google Patents
Method and apparatus for seamlessly switching reception between multimedia streams in a wireless communication system Download PDFInfo
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Abstract
Techniques to seamlessly switch reception between multimedia programs are described. For ''continued decoding'', a wireless device continues to receive, decode, decompress, and (optionally) display a current program, even after a new program has been selected, until overhead information needed to decode the new program is received. After receiving the overhead information, the wireless device decodes the new program but continues to decompress the current program. The wireless device decompresses the new program after decoding this program. For ''early decoding'', the wireless device receives a user input and identifies a program with potential for user selection. The identified program may be the one highlighted by the user input or a program anticipated to be selected based on the user input. The wireless device initiates decoding of the identified program, prior to its selection, so that the program can be decompressed and displayed earlier if it is subsequently selected.
Description
The application requires to submit on October 24th, 2003, exercise question is the rights and interests of the interim U. S. application sequence number 60/514,401 of " A Method forSeamlessly Switching Reception Between Multimedia Streams in aWireless Multicast Network ".
Technical field
The present invention relates generally to communication, and more clearly relate to the technology that is used between media stream, switching reception.
Background technology
For broadcast, multicast and/or unicast services, wireless communication system can send a plurality of data flow simultaneously.Data flow is the stream of the wireless device data that can independently receive.Broadcast transmitted is sent to all wireless devices within the coverage, and multicast transmission is sent to one group of wireless device, and unicast transmission is sent to a specific wireless device.For example, via the terrestrial radio link, the base station can send a plurality of data flow of multimedia (for example, TV) program, so that received by the wireless device within the coverage of this base station.
Wireless device can receive only by base station in the multimedia programming that any given time sends.In order to receive this program, all data flow that the identification of this wireless device is sent for this program by this base station, for the definite parameter (for example, how each data flow sends and where send to) of being correlated with of interested each data flow, decode for each data flow and the data flow of further handling each decoding generates the output that is fit to offer the user according to these parameters.As long as this program of selective reception, this wireless device continue the data flow of the program of choosing is decoded, and provide the data of decoding in the mode of stream.
If this another multimedia programming of user's selective reception, so, in order to gather, to decode and showing this new program, this wireless device typically needs to carry out a group task.These tasks can comprise this new program that termination sends the decoding of current program and processing, identification base station all data flow, for the definite relevant parameter of each data flow of this new program and according to its parameter each new data flow is decoded.During wireless device was carried out task for new program, this equipment can make this demonstration " freeze " with the frame of last decoding of old program, and perhaps the background with blueness or black makes this demonstration " blank ".For some wireless systems, gather and time quantum that the new program of decoding is required may long (for example, above 1 second).In this case, in the whole duration, make this demonstration freeze or blank, may make user's " irritated ".
Therefore, need better to be used between multimedia programming, to switch the technology that receives in the art.
Summary of the invention
The technology that seamless switching receives between multimedia programming/stream that is used for has here been described.In some cases, these technology can provide the better user experience of switching for program and picking rate faster can be provided.These technology comprise " continue decoding (continued decoding) " to the current program of choosing, to " decoding (earlydecoding) in advance " and the video and the audio transmission of time bias (time-compensated) of the program expected.
For continuing decoding, even if selected after the new program, wireless device continues to receive, decodes, decompresses and (alternatively) shows current program, up to obtaining to receive the decode the necessary Overhead of this new program.In under the situation that stream is handled, " decoding " refers to the physical layer receiver and handles or channel-decoding, and high-rise receiver is handled or resource decoding (for example, video and audio decompression) and " decompression " refers to.Obtain after the Overhead, wireless device is decoded to this new program, but continuation uses the data of the decoding of the previous current program that obtains that current program is decompressed.Finish after the decoding to this program, this wireless device decompresses to this new program.If current and new program send with hierarchical coding (this is not a necessary condition), and be so as described below, can handle two conversions between the program more smoothly.
For decoding in advance, wireless device receives user's input and discerns the program that the user may select.User's input can be used to arouse program guide, the input of the keyboard on the navigation of the user on the program guide (user navigation), remote control unit or the like.The program of this identification can be one according to user input and the program of highlighted demonstration, or one expect based on this user's input will selecteed program.Before it was selected, this wireless device began the program of this identification is decoded, and therefore, if this program was selected afterwards, it can decompressed and demonstration within shorter time quantum.Can select new program if reckon with the user, this wireless device also can be carried out some task (for example, receiving Overhead constantly), make this program can be decoded earlier, decompress and show.
For the transmission of time bias, the base station sends the video and the audio frequency of program to solve the Audio Processing time delay in this wireless device and the mode of the difference between the Video processing time delay.If the Video processing time delay prolongs Δ D during than Audio Processing, this base station can shift to an earlier date Δ D and sends this video so.So the buffering that this wireless device can be enough very little or need not cushion and receive, decode, decompress and display video and audio frequency obtains the suitable time unifying of video and audio frequency simultaneously.This makes this wireless device to show audio frequency earlier in the program change, and this is because the processing delay of audio frequency is shorter, thereby the response faster to the program change is provided.
Technology described herein can be used or be used in combination individually.Various aspects of the present invention and embodiment describe hereinafter in further detail.
Description of drawings
By below in conjunction with accompanying drawing the present invention being described in detail, feature of the present invention and essence will become apparent, and in whole accompanying drawing, identical reference symbol identifies corresponding part, wherein:
Fig. 1 illustrates the block diagram of base station and wireless device;
Fig. 2 illustrates the structure of an exemplary superframe;
Fig. 3 has described the transmission of the data flow on data channel;
Fig. 4 is illustrated in transmission (TX) data processor in the base station;
Fig. 5 is illustrated in reception (RX) data processor in the wireless device;
Fig. 6 illustrates the timeline that switches reception from program A to program B;
Fig. 7 illustrates from program A to program B and switches the timeline that receives, and wherein these two programs all use hierarchical coding;
Fig. 8 illustrates the process of switching reception from program A to program B;
Fig. 9 illustrates an exemplary display screen;
Figure 10 is depicted as the exemplary table that program guide is safeguarded;
Figure 11 illustrates use and decodes the process of switching reception between program in advance;
Figure 12 illustrates the video and the audio transmission of time unifying; And
Figure 13 illustrates the video and the audio transmission of time bias.
Embodiment
Here the speech of using " exemplary " expression " example or illustration as an example, ".Any conduct described herein " exemplary " embodiment and design needn't be interpreted as being preferred or having advantage with respect to other embodiment or design.
The technology that is used for seamless switching reception between media stream described herein can be applied to wireless or wired communication system, Time Division Multiplexing, frequency division multiplexing (FDM) and code division multiplexing (CDM) system can be applied to, and single carrier and multicarrier system can be applied to.Multicarrier can be provided by OFDM (OFDM), can be provided by other multi-carrier modulation technology, perhaps can be provided by some other structure.Technology described herein also can be used for broadcasting, multicast and unicast services.For distinct, these technology described below are aimed at an exemplary wireless communication system, and it adopts a specific concatenated coding scheme (concatenated coding scheme), a specific frame structure and a specific transmission plan.
Fig. 1 illustrates the base station 110 in the wireless communication system 100 and the block diagram of wireless device 150.Base station 110 is a fixing station and also can be known as base station transceiver system (BTS), access point, transmitter or some other terms normally.Wireless device 150 can be that fix or mobile, and also can be known as user terminal, travelling carriage, receiver or some other terms.Wireless device 150 also can be the portable unit as cellular phone, handheld device, wireless module, PDA(Personal Digital Assistant) or the like.
In base station 110, TX data processor 120 receives from a plurality of (T) data flow (perhaps " business " data) of data source 112 and handles (for example, decompress, decode, interweave and sign map) each data flow to generate a plurality of data symbols.As used herein, " data symbol " is the modulation symbol for business datum, " frequency pilot sign " is the modulation symbol for pilot tone (data of the priori that base station and wireless device are known), and modulation symbol is the complex value for the point on the signal constellation which of a kind of modulation scheme (for example, M-PSK, M-QAM or the like).The data symbol that multiplexer (Mux)/modulator 130 receives for all data flow, multiplex data symbol and frequency pilot sign, and generate compound symbols streams.130 pairs of these compound symbols streams of modulator are carried out modulation and are generated data sampling stream.Transmitter unit (TMTR) 132 is changed to the data sampling circulation analog signal and further this analog signal regulated (for example, amplification, filtering and up-conversion) to generate modulated signal.Then, base station 110 sends to wireless device the system to this modulated signal from antenna 134.
In wireless device 150,110 signals that send are received by antenna 152 from the base station, and are provided for receiver unit (RCVR) 154.154 pairs of signals that received of receiver unit are regulated (for example, filtering, amplification, down-conversion and digitlization), and input sample stream is provided.160 pairs of input samples of demodulator/demodulation multiplexer (Demod/Demux) are carried out demodulation to obtain the symbol for the reception of interested one or more data flow (for example, all data flow of a selected multimedia programming).Demodulator 160 is further carried out the symbol that has received and is detected (for example, equilibrium or matched filtering) data symbol to obtain to have detected, and the described data symbol that has detected is the estimation to the data symbol of base station 110 transmissions.170 pairs of data symbols that detected at each selected data flow of RX data processor are handled (for example, symbol de-maps (demap), deinterleaving, decoding and decompression), and the dateout of that stream is provided.The processing that demodulator 160 and RX data processor 170 carry out respectively with base station 110 in modulator 130 opposite with the processing carried out of TX data processor 120.The dateout of 180 pairs of selected data flow of preprocessor (is for example handled, convert simulation, filtering and amplification to), generate then and (for example be adapted at electronic display unit 182, lcd screen), the output signal that presents on audio unit 184 (for example, loud speaker) and/or other output equipment.
Fig. 2 illustrates an exemplary superframe structure 200 that can be used for system 100.Business datum can send in a plurality of superframes, and each superframe 210 has a predetermined time duration (for example, about 1 second).Superframe also can be known as frame, time slot or other term.For the embodiment shown in Fig. 2, each superframe 210 comprises the field 220 that is used for pilot tone, is used for the field 230 of one or more expense/control information symbol (OIS) and the field 240 that is used for business datum.Wireless device can use this pilot tone to be used for synchronously (for example, frame detects, frequency errors is estimated and sequential is obtained) and possible channel estimating.This Overhead can be indicated for the various parameters of the T that an is sent data flow (for example, the time-frequency distributions of the data flow of each in superframe (time-frequency location)).This T data flow is sent out in field 240.For the embodiment shown in Fig. 2, field 240 further be divided into 4 isometric frame 240a to 240d so that transfer of data.Usually, a superframe can have any duration and can comprise any a plurality of field and frame.Pilot tone and Overhead also can be sent with the alternate manner that is different from the mode shown in Fig. 2.
Fig. 3 has described data flow transmission exemplary on MLC.This data flow is handled in a plurality of data blocks.In each superframe, M data block can be sent on MLC, wherein M 〉=0 and can changing between superframe.Each data block comprises the information bit of given number, and adopts outer sign indicating number (outer code) independently each data block to be encoded to produce a code block.Then, each code block is divided into four sub-pieces, and is based upon " pattern " that this MLC selects, employing ISN (inner code) is encoded to each sub-piece and it is modulated (for example, being mapped to modulation symbol).The modulation scheme that this pattern can be indicated interior bit rate and is used for this MLC.Four sub-pieces of the modulation symbol of each code block are sent by in four frames in a superframe, and frame of a sub-piece is to obtain time diversity and healthy and strong receptivity.For each frame, the M of M code block sub-piece sent in the part of the frame of distributing to this MLC.
Characteristic or other possible factor of the data flow of carrying according to this MLC, each MLC can be sent in continuous or discrete mode.For each superframe, " movable (active) " MLC is the MLC that is sent out in that superframe.In superframe, each movable MLC can carry one or more data blocks.For configuration and the distribution of simplifying resource, as shown in Figure 3, for four frames, each movable MLC is authorized to identical resource allocation (for example, identical time-frequency distributions).
Get back to Fig. 2, the OIS of each superframe can carry " compound " Overhead for all movable MLC that send in this superframe.This compound Overhead transmits the relevant parameter (for example, the time-frequency distributions of the MLC in superframe) for each movable MLC.In addition, each MLC can carry " embedding " Overhead about the transmission of this MLC in next superframe.The Overhead of this embedding allows this wireless device to recover the transmission of this MLC in next superframe, and needn't check the OIS that sends in that superframe.Wireless device can at first use the synthetic Overhead among the OIS determine the time-frequency distributions of interested each data flow, and can use subsequently embedding Overhead in case only this data flow be sent out during switch on.The outer bit rate and the pattern that are used for each MLC can be sent at OIS, are perhaps sent on an independent control channel.For clear, following description is supposed that the OIS in each superframe carries and is received in the necessary whole parameters of each MLC that sends in this superframe.
Fig. 4 shows the block diagram of an embodiment of the TX data processor 120 in the base station 110.In order to simplify, Fig. 4 shows the processing for the video and the audio frequency of a multimedia programming.Fig. 4 also shows the use of " layering " coding, and thus, a data flow is sent by the form with two son streams, and these two sub-streams are called as basic stream and enhanced flow.This basic stream can carry the essential information that is used for all wireless devices, and this enhanced flow can carry additional information so that wireless device is observed better channel condition.Use hierarchical coding, independently this is flowed substantially and encode with enhanced flow and modulate, merge these two stream of modulation symbols then to obtain a data symbols streams to generate two stream of modulation symbols.
In TX data processor 120 inside, the video data stream { i that video encoder 410 receives for the video section of multimedia programming
xAnd it is compressed, the basic stream { d for this video section is provided then
XbAnd enhanced flow { d
Xe.Video encoder 410 can be realized MPEG-2 (Motion Picture Experts Group), and can generate intraframe coding (I) frame, forward prediction (P) frame and bi-directional predicted (B) frame of a sequence for this video data stream.Basic stream { d
XbCan carry I frame and P frame, and enhanced flow { d
XeCan carry B frame and possible P frame.Usually, video encoder 410 can be carried out any video compression scheme, and frame or its combination that can carry any kind of basic stream and enhanced flow.
The basic stream handle 420 of TX receives and handles video-frequency basic flow { d
Xb.In processor 420 inside, each data block in 422 pairs of these video-frequency basic flows of outer encoder/interleaver is encoded and is generated a code block.Each data block comprises the grouping of K data and can for example be used that (N, K) outer coding is carried out in Reed Solomon code, generates a code block that has N outer coding groups.For example, the data block that has 12 data groupings can use the Reed Solomon code of 3/4 speed to carry out outer coding, to generate a code block that has 16 outer coding groups.Outer encoder 422 also generates a Cyclic Redundancy Check value that is used for (for example, the determining that grouping correctly still is decoding mistakenly) of error detection occurs, and it is attached on each outer coding groups.Interleaver 422 is divided into four sub-pieces being used for four frames to each code block and further to the outer coding groups that is used for each frame interweave (for example, rearrangement).Inner encoder/interleaver 424 for example adopts Turbo code that each outer coding groups is encoded to generate interior coding groups.Interleaver 424 interweaves to generate a grouping that interweaves to the bit in the coding groups in each.The modulation scheme (for example, QPSK or 16-QAM) that sign map unit 426 is based upon this video data stream selection is mapped as modulation symbol to the bit from interleaver 424, and the first stream of modulation symbols { s for this video-frequency basic flow is provided
Xb.
TX enhanced flow processor 430 is handled this video enhanced flow { d
Xe, and the second stream of modulation symbols { s is provided
Xe.Processor 430 can use with processor 420 and flow same or different outer sign indicating number, ISN and the modulation scheme of use substantially for this.Combiner 440 receives first and second stream of modulation symbols and uses gain G respectively
BsAnd G
EsAdjust first and second stream of modulation symbols, the stream of modulation symbols that merges this adjustment then is to generate the data symbol stream { s for video section
x.Gain G
BsAnd G
EsBeing respectively this flows and therefore this enhanced flow is determined the amount (and its coverage) of transmitting power substantially.If do not use hierarchical coding, video encoder 410 provides a data flow { d so
x, processor 420 is encoded to generate data symbol stream { s to this data flow
x, and do not need processor 430 and combiner 440.
Audio data stream { the i that audio coder 450 receives for the audio-frequency unit of this multimedia programming
yAnd it is encoded, the basic stream { d for this audio-frequency unit is provided then
YbAnd enhanced flow { d
Ye.Audio coder 450 can be carried out any audio compression scheme.Basic stream { d
YbCan carry monophonic audio (for example, a left side adds the right side, perhaps L+R), and enhanced flow { d
YeCan carry stereo audio (for example, a left side subtracts the right side, perhaps L-R).
The basic stream handle 460 of TX receives and handles this audio frequency and flow { d substantially
Yb, and the first stream of modulation symbols { s that flows substantially for this audio frequency is provided
Yb.In processor 460 inside, 462 pairs of outer encoder/interleavers are used for data block that this audio frequency flows substantially to carry out encoding and interweaving outward, coding and interweaving in inner encoder/interleaver 464 further carries out it, sign map unit 466 is mapped as modulation symbol to it then.TX enhanced flow processor 470 is handled this audio frequency enhanced flow { d
YeAnd the second stream of modulation symbols { s is provided
Ye.Combiner 480 receives, adjusts and merges this stream of modulation symbols { s
YbAnd { s
Ye, generate data symbol stream { s then for this audio-frequency unit
y.If do not use hierarchical coding, audio coder 450 provides a data flow { d so
y, processor 460 is encoded to generate data symbol stream { s to this data flow
y, and do not need processor 470 and combiner 480.
Fig. 5 shows the block diagram of an embodiment of the RX data processor 170 in the wireless device 150.In order to simplify, Fig. 5 shows the processing for the video and the audio frequency of a multimedia programming.In RX data processor 170 inside, basic stream handle 520 of RX and RX enhanced flow processor 530 receive the data symbol stream { that has detected from demodulator 160
x, it is the data symbol stream { s for this video section
xEstimation.In processor 520 inside, 522 pairs of data symbols that detected of symbol de-mapper are separated mapping, and the bit that has detected is provided then, and it can be expressed as log-likelihood ratio (LLR).Unit 522 can be the part of demodulator 160, rather than the part of RX data processor 170.Based on ISN, 524 pairs of bits that detected at each grouping of interior deinterleaver/decoder carry out deinterleaving and decoding, and interior decoded packet is provided.Decoder 524 also utilizes the crc value that adds in the decoded packet in each that this grouping is checked.Outer deinterleaver/decoder 526 is carried out deinterleaving to the interior decoded packet of each frame.If any grouping in the given code block is decoded mistakenly, decoder 526 is based on for example (N, K) Reed Solomon code is carried out outer decoding to N interior decoded packet of that code block, and K outer decoded packet of that code block is provided then so.If the grouping in this code block is not decoded, then can skip this outer decoding in mistakenly.Processor 520 provides the video-frequency basic flow of decoding
Processor 520,530,560 and 570 is carried out for the physical layer receiver of this data flow and is handled (or " decoding ").Video Decoder 540 and audio decoder 580 are carried out for the high-rise receiver of this data flow and are handled (or " decompression ").Can be with other data flow of other multimedia programming and/or other content being decoded and decompressed with the similar mode of the mode shown in Fig. 5.
1. continue decoding
Fig. 6 illustrates the time hotlist that receives to new multimedia programming B seamless switching from current multimedia programming A.During beginning, in superframe n, wireless device decoding, decompression and display program A.At T
1Constantly, the user selects this new program B.At this constantly, this wireless device is not to the program B necessary Overhead of decoding.In superframe n, this wireless device continuation is decoded, decompresses and (alternatively) shows this program A, rather than the order demonstration is freezed or blank.
At T
2Constantly, the beginning of promptly next superframe n+1, this wireless device receives the OIS of this superframe and obtains the Overhead of program B.Use this Overhead, in superframe n+1, this wireless device can begin program B is decoded.In superframe n+1, this wireless device is used in the data for the decoding of program A that obtain among the previous superframe n, continues program A is decompressed.
At T
3Constantly, this wireless device is finished the decoding for the program B of superframe n+1.If program B uses the Reed Solomon code of 3/4 speed and transmission is for the parity packet of each code block in frame 4, so as shown in Figure 6, if grouping is decoded in mistakenly, then this wireless device can recover all code blocks of program B in frame 3.When the decoding finished program B (for example, as shown in Figure 6, at moment T
3), this wireless device can begin this program is decompressed in superframe n+1 in advance.This wireless device also can begin to carry out program B is decompressed earlier when obtaining the data (for example, the I frame) of enough decodings for program B.Thereby this wireless device can begin program B is decompressed in superframe n+1 in advance.As selection, this wireless device can begin when next superframe n+2 begins to program B decompress (not illustrating among Fig. 6).
Can be T
1And T
3Between time regard the acquisition time of program B as.This acquisition time is variable, and it depends on that when receiving the user selects, and this is relevant with next OIS, and depends on when to start program B is decompressed.If this OIS seldom is sent out (for example, every 1 second) and/or the decoding time delay very long, this acquisition time may be relatively very long so.In this acquisition time, continue program A is decoded, decompresses and (alternatively) demonstration, show compared with order in whole acquisition time and freeze or blank, better user experience can be provided.
Fig. 7 shows the time hotlist that receives to new multimedia programming B seamless switching from current multimedia programming A, and wherein two programs all use hierarchical coding.During beginning, in superframe n, basic stream and the enhanced flow (BS﹠amp of this wireless device decoding, decompression and display program A; ES).At T
1Constantly, the user selects this new program B.Owing to be not used in the Overhead that program B is decoded at this this wireless device of moment, therefore in superframe n, this wireless device continues program A is decoded, decompresses and (alternatively) demonstration.
At T
2Constantly, this wireless device receives the OIS of next superframe n+1, and obtains the Overhead of program B.In superframe n+1, this wireless device continues the basic stream of program A (is for example decoded, use the processor 520 and 560 among Fig. 5) and begin the basic stream of program B (is for example decoded, use the processor 530 and 570 among Fig. 5, these processors are generally used for enhanced flow, but also can be configured to handle basic stream).In superframe n+1, utilize the data in previous frame n, obtain for the decoding of program A, the basic stream (perhaps basic stream and enhanced flow) that this wireless device also continues program A decompresses.
At T
3Constantly, this wireless device is finished the decoding to the basic stream of program B.This wireless device can be in advance in superframe n+1 (for example, as shown in Figure 7, at T
3Constantly) or at first, begin program B is decompressed at next superframe n+2.In superframe n+2, this wireless device stops the decoding of program A and carries out the basic stream of program B and the decoding of enhanced flow.The data that utilization obtains in previous superframe n+1, this wireless device for the decoding of the basic stream of program B also to this substantially stream decompress.At T
5Constantly, the data for the decoding of the enhanced flow of program B become available.This wireless device can shift to an earlier date (for example, as shown in Figure 7, at T
5Constantly) or at first, begin basic stream and the enhanced flow of program B are decompressed at next superframe n+3.
As shown in Figure 7, if two programs all utilize hierarchical coding to send, can be so that conversion " more level and smooth " from current program A to new program B.This wireless device can switch to program B from program A by stages.Basic stream and the enhanced flow of this wireless device program receiving A in the phase I, the basic stream of program receiving A in second stage, the basic stream of program receiving B in the phase III, basic stream and the enhanced flow of program receiving B in the quadravalence section then then then.Can omit a stage or a plurality of stage, for example,, switch (as shown in Figure 7) or the like if in several superframes seldom, carry out if program A or program B do not utilize hierarchical coding to send.
Fig. 8 illustrates the flow chart that is used for switching to new multimedia programming B from current multimedia programming A the processing 800 that receives.This wireless device receives, decodes, decompresses and shows current program A (piece 810).The user that this wireless device receives for new program B selects (piece 812).This wireless device continues decoding, decompresses and (alternatively) demonstration current program A (piece 814), can use up to the Overhead of new program B, as determining in piece 816.At this constantly, continuation decompresses and (alternatively) shows current program A (piece 818) but this wireless device is decoded to new program B.As determining in the piece 820, in case new program B is decoded, this wireless device is just decoded, is decompressed and shows new program B (piece 822).
2. decoding in advance
More than to the explanation of " continue decoding " suppose this wireless device before the user selects new program not about the information of program change.If this is the case, this wireless device begins new program is decoded after receiving user's selection so.Yet in many cases, this wireless device has the information about the previous action of user, and can utilize these information to expect or predictive user selection in the future.In order to obtain to switch faster between the program, before the user selected program, this wireless device can be carried out " shifting to an earlier date " decoding to this program.As described below, this is encoded in advance and can carry out in a different manner.
Fig. 9 illustrates the exemplary display screen 900 that this wireless device generates.Embodiment hereto, display screen 900 comprises two zones 910 and 920.Zone 910 illustrates the video of the multimedia programming of current selection.Zone 920 illustrates program guide (PG), and it can list the program of showing on the different channels.Usually, in order to show the content of any type, display screen 900 can comprise any a plurality of zone.
By click on this wireless device or remote control unit on suitable key (for example, " program guide " key), the user can access program guide at any time.If the user clicks in the key (for example, " making progress ", " downwards " button) of one group of appointment any one, this wireless device also can automatically access program guide.Under any circumstance, this wireless device can monitor that the user on program guide navigates to expect that program is selected next time.
For the embodiment shown in Fig. 9, this program guide has shown a tabulation of program channel and the current program of showing in these channels.The program of the current highlighted demonstration of cursor 922 indications.In response to user's key activity, cursor 922 moves up and down at program guide.If user's moving cursor surpasses the top or the bottom in zone 920, the other part of this program guide is retrieved and shows in zone 920 so.
It is the exemplary table 1000 that program guide is safeguarded that Figure 10 illustrates this wireless device.For fast access, table 1000 can be stored in the high-speed cache of this wireless device.Table 1000 comprises that row 1014, the storage of row 1012, the programs stored title of programs stored channel are used to carry the row 1016 of the MLC of each program, store the row 1018 of relevant parameter of each MLC and the storage row 1020 for the time-frequency distributions of each MLC of current superframe.The base station sends the information of row 1012 to 1018, and these information may seldom change, and this wireless device upgrades this information where necessary.The time-frequency distributions of each MLC may change in each superframe.As mentioned above, if this wireless device receives the multimedia programming of current selected continuously, so, the time-frequency distributions that is used for each MLC of this program can obtain from the Overhead of the embedding that sends at that MLC.This OIS needn't be waken up and receive to this wireless device.In this case, except these MLC of the program that is used for current selection, for other all MLC, the information in row 1 020 all is outmoded.
May just change program (for example, based on the activity of key/button) if this wireless device detects the user, this wireless device can begin to receive the OIS in each superframe so.This wireless device can be preserved the Overhead that (1) is used for the MLC of the program that shows at zone 920 program guide, the Overhead of all MLC that (2) send, the perhaps Overhead of the MLC of (3) some other groups in current superframe.Then, needn't wait for the OIS in the next superframe, this wireless device can begin among these MLC in the current superframe any one decoded.
Under the situation that does not receive whole code block, this wireless device can recover the code block that sends on a given MLC.For example, if use the Reed Solomon code of 3/4 speed for this code block, and this code block is divided into the sub-pieces of four sub-pieces and these four and is sent (as shown in Figure 3) in four frame of a superframe, and so, this wireless device can be only recovers this code block with three in this a little.Decode by the MLC to beginning in frame 1 or frame 2, this wireless device can recover this code block.Thereby if receive the indication that this MLC is decoded during frame 1, this wireless device can begin this MLC is decoded at frame 2 so, and does not need to wait for up to next superframe.
Get back to Fig. 9, when the user navigates in program guide, the program of the current highlighted demonstration of cursor 922 indications.Can use in case be used for the Overhead of MLC of the program of this highlighted demonstration, this wireless device just can begin this program is decoded.As mentioned above, if there are enough resources to utilize on this equipment, this wireless device can be decoded to the program of current selection and the program of highlighted demonstration simultaneously.In one embodiment, can use in case be used for the data of decoding of the program of this highlighted demonstration, this wireless device just can begin this program is decompressed.After the program of this highlighted demonstration was decompressed, this wireless device can show it alternatively.In another embodiment, this wireless device continues decoding, decompresses and shows the program of current selection, has selected the program of highlighted demonstration up to the user.Embodiment hereto, this wireless device use the data of decoding of program of this highlighted demonstration so that switch to this program fast when the user selects.
If the program of highlighted demonstration does not use hierarchical coding, so, this wireless device can be decoded to the program of this highlighted demonstration, and the program to current selection decompresses simultaneously, for example, and as shown in Figure 6.In case the data for the decoding of the program of this highlighted demonstration can be used, this wireless device just can decompress and shows this program.If the program of the program of current selection and highlighted demonstration has used hierarchical coding, so, this wireless device can switch between program by stages, for example, and as shown in Figure 7.This wireless device can be decoded to the basic stream of two programs, and can decompress and show the basic stream of the program of current selection.(1) in case the data of the decoding of the program of this highlighted demonstration can be used, and/or (2) if the user has selected this program, and this wireless device can decompress and show the basic stream of this program so.If the user has selected the program of this highlighted demonstration, the basic stream and the enhanced flow of this program can be decoded, decompresses and be shown to this wireless device.
If this wireless device is decoded to the program Y of this current highlighted demonstration, and highlighted again another program Z that shown of this user, so, this wireless device stops the processing to program Y, in case and the Overhead of program Z can use, and just begins program Z is decoded.This wireless device is followed the user's navigation on different programs, and attempts the program of any current highlighted demonstration is decoded.If this just makes that this user has selected the program of last highlighted demonstration subsequently, then this wireless device can switch to this program fast.
As mentioned above, this wireless device can be carried out the decoding in advance to the program of highlighted demonstration under the situation of not considering out of Memory.Based on other information, for example, mode of the direction of rolling, the speed of rolling, rolling or the like, this wireless device can expect that also next user selects.
For example, if this user is just managing to arrive one from current program channel specific program channel quite far away, this user may press " making progress " button continuously.In this case, this wireless device can be ignored the program of the highlighted demonstration of quick change, is released up to this button that " makes progress ".So after this button was released, this wireless device can be carried out decoding in advance to the program of last highlighted demonstration.As selection, this wireless device can be decoded to the program of the program of leading over current highlighted demonstration.Can determine this " in the future " program based on direction of rolling and speed.Program in the middle of showing during rolling fast can provide good feedback to the user.
As the another one example, the user can click " making progress " button with somewhat periodic speed and browse (surf) program channel.In this case, the program of each highlighted demonstration can be decoded, decompresses and be shown to this wireless device, wherein for the program of each highlighted demonstration, given time enough and carried out these tasks.If reckon with the user navigation on this direction, this wireless device also can decode (if resource can with) to one or more program in the program front of current highlighted demonstration.For example, if four program A, B, C and D are sorted from A to D, in the time of in program A, when receiving channel-up, this wireless device begins to gather program B and program C.In the time of in program B, when receiving channel-up, this wireless device can be abandoned program B and begin to gather program C and program D.This wireless device also can begin to go up a plurality of programs of collection in a plurality of directions (for example, the rightabout that rolls at channel).
Via numeric keypad, the user can select this program by directly importing the channel of new program.Based on the key of user's input, this wireless device can begin to decode in advance.For example, this user may click " 8 " afterwards in click " 3 ", clicks " input " then and forwards program channel 38 to.When " 3 " button of receiving from the user, this wireless device can begin program channel 3 is decoded (expecting that this user selects this channel) in advance, and/or preserve the Overhead (expecting that the user selects one of them channel) of program channel 30 to 39.When receiving " 8 " button, select program channel 38 by expecting this user, this wireless device can begin this channel is decoded in advance.When receiving " input " button, this wireless device can decompress and show this channel.
This wireless device also can be preserved Overhead and/or execution decoding in advance for often accessed program.For example, this user may be continually or redirect between two programs of interest constantly (for example, by clicking " redirect " button).When detecting this situation, by expecting redirect next time, this wireless device can be decoded to two programs.This user also may one of program channel among a small circle between scroll forward and backward.When detecting this situation, by expecting the next channel alteration in rolling, this wireless device can be decoded to next program.
Usually, for program is decoded in advance, this wireless device can use any relevant information.Different key inputs (for example, " making progress ", " redirect ", digital number or the like) can provide different information, and this wireless device can use these information to expect that the user selects next time.This wireless device can will be carried out decoding in advance by any program that the user selects to expecting, for example, and the program of current highlighted demonstration, the program on the rotating direction or the like.
Figure 11 shows the flow chart that is used for switching the processing 1100 that receives between multimedia programming, has wherein used decoding in advance.This wireless device for example detects user navigation (piece 1112) on program based on key/button activity.If detect user navigation, determine that as piece 1114 so, this wireless device begins to handle the OIS in each superframe, and preservation the Overhead (piece 1116) of interested MLC.For example, this wireless device can be preserved the Overhead of all MLC, perhaps only preserves the Overhead of the used MLC of the program that shows on the program guide screens, perhaps preserves the Overhead of the MLC of some other groups.
After detecting user's navigation, thereafter, this wireless device monitoring user imports (piece 1118).If receive user's input, determine that as piece 1120 so, this wireless device determines whether this user's input is channel selecting key (piece 1122).Channel selecting key is the key that the indication user selects new program channel, and it can comprise " input ", " channel-up ", " channel downward modulation " and " redirect " key.If do not receive channel selecting key, so, the program (piece 1124) that this wireless device imports identifying user to select based on (a plurality of) user who receives so far.As mentioned above, this program may be the program of current highlighted demonstration or based on the input of numeral and/or non-numeric key and reckon with the program that will select.This wireless device begins the program of this sign decode in advance (piece 1126).This wireless device also can decompress and (alternatively) demonstration (piece 1128) to this program before the user selects.As selection, this wireless device can wait for that before this program being decompressed and show the user selects this program (not illustrating among Figure 11).Then, this processing turns back to piece 1118.
Get back to piece 1122, if receive channel selecting key, this wireless device switches to the program of new selection so, and this program can be based on the program that (a plurality of) user selection is before identified.Then, the program (piece 1130) that this is selected is decoded, decompresses and shown to this wireless device.Then, this processing can turn back to piece 1118 (as shown in figure 11) or turn back to piece 1112.
In response in first user's input of key/receive after button inertia a period of time, this wireless device can execution block 1112 to 1116.This first user's input also can trigger piece 1118 and 1120, and will suitably be handled.
For clear, more than described via the program of program guide and selected.Also can select program, for example, use system of selection on other the screen with other mode.For example, display screen can show one or more icons, and each icon can be represented a specific program.Under any circumstance, in case a program is highlighted demonstration, this wireless device can begin the collection (for example, decoding) of this program in advance, and can switch to this program after it is selected by the user.Owing to begun this acquisition process in advance before the user selects, so the user feels picking rate faster.
Should continue decoding and shift to an earlier date one or more data flow that decoding technique can be applied to be associated with multimedia programming.For example, can be only for current and the audio-frequency unit/component of new multimedia programming or only the two is carried out and continues decoding or decoding in advance for video section or for the Voice ﹠ Video part.Therefore, can be for audio-frequency unit, video section or the Voice ﹠ Video part of current and new multimedia programming the two come piece 810,814,818 in the execution graph 8 and piece 1126,1128 and the piece 1130 among piece 822 and Figure 11.
Also can dispose different piece/component that resource in this wireless device receives different multimedia programmings.For example, the RX data processor can be decoded and decompress the audio-frequency unit of a program and the video section of another program concomitantly.This makes the user to watch simultaneously and listens to two different programs.Should continue decoding and shift to an earlier date decoding technique to make the user can more seamlessly switch the audio frequency and/or the video section of two programs.For example, the user can watch the base band match simultaneously and listen to music.If this match becomes interesting, the user can more seamlessly switch to the audio-frequency unit of this match from this music so.The user also can watch a match simultaneously and listen to another match, and whenever breathtaking incident takes place, the user can switch to video and/or audio this more interesting match.
3. the Voice ﹠ Video of time bias transmission
Video in this wireless device and audio decoder need a certain amount of time to carry out video and audio decompression respectively respectively.The base station can send video and audio frequency with the mode of improving the collection of new program.
Figure 12 is illustrated in the video and the audio transmission of place, base station time unifying.Video section 1210 and audio-frequency unit 1212 be designated play together and by the base station at T
11Time unifying ground sends constantly.Wireless device receives this video and audio-frequency unit, each part decoded, and at T
12Constantly finish the decoding of these parts.In order to simplify, Figure 12 illustrates for Voice ﹠ Video part identical transmission and decoding time delay D
DecThen, this wireless device uses Video Decoder and audio decoder independently the video and the audio-frequency unit of this decoding to be decompressed respectively.Figure 12 shows the video decompression time delay D
VideoWith the audio decompression time delay D
Audio, D wherein
VideoTypically than D
AudioLong and may compare D
AudioLong is many, for example, if in order to improve compression performance, the situation that frame sends not according to order.So this wireless device is at T
13Constantly fulfil audio decompression ahead of schedule.This wireless device is typically with difference (the Δ D=D just, of decompression time delay
Video-D
Audio) come the audio frequency (not being the audio frequency that comprises the decompression of more bits) of decoding is cushioned.Sort buffer makes works as video decompression at T
14When constantly finishing, video and audio-frequency unit can be play together.
Figure 13 shows video and the audio transmission that adopts time bias, the difference of Yanzhong when this time bias has solved video and audio decompression.Video section 1310 and audio-frequency unit 1312 designated broadcasts together, but the base station is at different T
21The moment and T
22Constantly respectively it is sent.This wireless device receives this video and audio-frequency unit, every part is decoded, at T
23Constantly finish video decode, and at T
24Constantly finish audio decoder.This wireless device decompresses to the video and the audio-frequency unit of decoding respectively, then greatly about T
25Constantly finish this two-part decompression.This video decompression time delay is D
Video, and this audio decompression time delay is D
Audio, this equates with the time delay shown in Figure 12.Yet with respect to audio-frequency unit 1312, video section 1310 is shifted to an earlier date delay inequality Δ D or Δ D=D
Video-D
AudioSend.
Adopt the transmission of the delay compensation shown in Figure 13, this wireless device can just be play it by a decompression audio frequency, and needn't cushion and wait for audio frequency and finish video decompression.Play as quickly as possible this audio frequency (because short decompression time delay is play than video is early) to program change provide respond faster desired.The response time of transmission for time bias shown in Figure 13 than the response time of transmission for time unifying shown in Figure 12 fast delay inequality Δ D.Because audio frequency has carried the relevant information such as many programs such as news, weather, even if therefore do not have video, the user also can enjoy audio frequency.
The various technology (for example, continuing to decode, decode in advance, use the switching stage by stage of basic stream and enhanced flow and the video and the audio transmission of time bias) that are used for the seamless switching reception can be used individually.These technology also can be used in various combination.For example, as mentioned above, decoding in advance can be carried out with switching combining stage by stage.
Seamless switching reception technique described herein can be realized by different modes.For example, these technology can realize in hardware, software or their combination.Realize that for hardware the processing unit that is used for supporting or carry out seamless switching to receive can be implemented in one or more application-specific integrated circuit (ASIC)s (ASIC), digital signal processor (DSP), digital signal processor spare (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, be designed to carry out other electronic unit of the function of describing or their combination here.
Realize that for software technology described herein can be realized with the module (for example, process, function or the like) of carrying out the function of describing here.This software code can be stored in the memory cell (for example, the memory cell 142 and 192 among Fig. 1), and is carried out by processor (for example, controller 140 or 190).This memory cell can be implemented in this processor inside or outside, and in the case, by variety of way well known in the art, this memory cell can be coupled to this processor communicatedly.
Here for reference and some part of help location of the title that comprises.These titles are not the scope that will be limited in its following described notion, and these notions can be applied to the other parts in the whole specification.
Provide the above description of the embodiment of the disclosure to make any technical staff of this area can make or use the present invention.Various modifications to these embodiment are conspicuous for a person skilled in the art, and under the situation that does not break away from the spirit and scope of the present invention, here Ding Yi general principle can be used by other embodiment.Therefore, the present invention will be restricted to the embodiment that illustrates here, but will meet and principle disclosed herein and novel feature the widest corresponding to scope.
Claims (52)
1, a kind of method that is used for receiving at wireless communication system multimedia programming comprises:
At least a portion to top line is decoded;
Reception is selected the user of second program;
Reception is used for to described second Overhead that program is decoded;
Continuation is decoded to described at least a portion of described top line, up to the Overhead that receives at described second program; And
After the Overhead that receives at described second program, at least a portion of described second program is decoded.
2, method according to claim 1, described at least a portion of wherein said top line comprises audio-frequency unit.
3, method according to claim 1, described at least a portion of wherein said top line comprises video section.
4, method according to claim 1 further comprises:
Described at least a portion to described top line decompresses, up to the Overhead that receives at described second program.
5, method according to claim 4, wherein, described at least a portion of described top line decompressed to be comprised: the video section to described top line carries out video decode.
6, method according to claim 4, wherein, described at least a portion of described top line decompressed to be comprised: the audio-frequency unit to described top line carries out audio decoder.
7, method according to claim 1 further comprises:
Described at least a portion to described top line decompresses, and is decoded up to described at least a portion of described second program.
8, method according to claim 7 further comprises:
After described at least a portion of described second program is decoded, described at least a portion of described second program is decompressed.
9, method according to claim 7 further comprises:
In the Overhead that receives at described second program, show described at least a portion of described top line, decoded up to described at least a portion of described second program.
10, method according to claim 1 further comprises:
After the described user's selection that receives described second program, provide to described second indication that program is decoded.
11, method according to claim 1, wherein, the decoding that described at least a portion of described top line is carried out and be the physical layer decoding to the decoding that described at least a portion of described second program is carried out.
12, a kind of device in the wireless communication system comprises:
Controller is used to control the decoding that at least a portion of top line is carried out, and the user who receives second program selects, and the startup reception is used for to described second Overhead that program is decoded; And
Data processor, be used for when it is controlled by described controller, described at least a portion to described top line is decoded, continuation is decoded to described at least a portion of described top line, up to the Overhead that receives at described second program, and after the Overhead that receives at described second program, at least a portion of described second program is decoded.
13, device according to claim 12 further comprises:
At least one decoder is used for described at least a portion of described top line is decompressed, up to the Overhead that receives at described second program.
14, device according to claim 12 further comprises:
Display unit is used for showing described at least a portion of described top line when the Overhead that receives at described second program, and is decoded up to described at least a portion of described second program.
15, device according to claim 12 further comprises:
Receiver unit is used for receiving described top line and described second program via single radio frequency (RF) channel.
16, a kind of device in the wireless communication system comprises:
Be used for module that at least a portion of top line is decoded;
Be used to receive module to user's selection of second program;
Be used to receive and be used for the module of Overhead that described second program decoded;
Be used to continue described at least a portion of described top line is decoded up to the module that receives at the Overhead of described second program; And
Be used for the module of after receiving, at least a portion of described second program being decoded at the Overhead of described second program.
17, device according to claim 16 further comprises:
Be used for described at least a portion of described top line is decompressed up to the module that receives at the Overhead of described second program.
18, device according to claim 16 further comprises:
Be used in the described Overhead that receives at described second program, show that described at least a portion of described top line is up to the decoded module of described at least a portion of described second program.
19, a kind of method that is used for receiving at wireless communication system multimedia programming comprises:
Within first time interval, the first basic stream and first enhanced flow of top line are decoded the essential information that the described first basic stream carries described top line, and the additional information that described first enhanced flow carries described top line;
After described first time interval, within second time interval, first basic stream of described top line and the second basic stream of second program are decoded; And
After described second time interval, within the 3rd time interval, the second basic stream and second enhanced flow of described second program are decoded.
20, method according to claim 19 further comprises:
Reception begins described second indication that program is decoded, and wherein, in response to receiving described indication, the decoding that startup is flowed substantially to described first and the described second basic stream carries out.
21, method according to claim 20 further comprises:
Receive the user input of described second program of highlighted demonstration, and wherein, described to begin the indication that described second program decoded be the response that described second program is highlighted demonstration.
22, method according to claim 19 further comprises:
Reception switches to the indication of described second program from described top line, and wherein, in response to receiving described indication, starts the decoding that the described second basic stream and described second enhanced flow are carried out.
23, method according to claim 22 further comprises:
Receive user's input of selecting described second program, and wherein, the described indication that switches to described second program is to described second selecteed response of program.
24, method according to claim 19 further comprises:
The described first basic stream and described first enhanced flow decoded within described first time interval are decompressed; And
Described first decoded within described second time interval basic stream is decompressed.
25, method according to claim 24 further comprises:
After described first time interval, stop the described first basic stream is decompressed; And
Described second decoded within described second time interval basic stream is decompressed.
26, method according to claim 25 further comprises:
The described second basic stream and described second enhanced flow decoded within described the 3rd time interval are decompressed.
27, a kind of method that is used for receiving at wireless communication system multimedia programming comprises:
Within first time interval, the first basic stream and first enhanced flow of top line are decoded the essential information that the described first basic stream carries described top line, and the additional information that described first enhanced flow carries described top line;
After described first time interval, within second time interval, first basic stream of described top line and the second basic stream of second program are decoded; And
The first basic stream and second basic stream that present described decoding so that show simultaneously.
28, a kind of method that is used for receiving at wireless communication system multimedia programming comprises:
Receive user's input;
Based on described user's input, the top line that identifying user may be selected; And
Before the user selects described top line, start the decoding that at least a portion of described top line is carried out.
29, method according to claim 28 wherein, receives described user's input and comprises: receives described user's input of the described top line of highlighted demonstration.
30, method according to claim 28 further comprises:
Based on described user's input, second program that identifying user may be selected; And
Before the user selects described second program, start the decoding that at least a portion of described second program is carried out.
31, method according to claim 30, wherein, described top line and described second program are in the different directions that channel rolls.
32, method according to claim 28 further comprises:
After finishing the decoding that described at least a portion of described top line is carried out, described at least a portion of described top line is decompressed.
33, method according to claim 28 further comprises:
Reception is selected the user of described top line; And
After finishing the decoding that described at least a portion of described top line is carried out, and select, described at least a portion of described top line is decompressed in response to the described user who receives described top line.
34, method according to claim 28 further comprises:
Detect user's navigation and select a new program to import based on the user; And
When expecting that the user selects at least one program one, receive Overhead at described at least one program, described Overhead is used to described at least one program is decoded.
35, method according to claim 34, wherein, described at least one program comprises a program of the program guide that is suitable for being presented on the display screen.
36, method according to claim 28 wherein, receives described user's input and comprises: be received in the key entry of rolling between the available programs.
37, method according to claim 28 wherein, receives described user's input and comprises: receive the numeral input for user selected program.
38, method according to claim 28 wherein, starts the decoding that described at least a portion of described top line is carried out and comprises:
Before the user selects described top line, start the decoding that the audio-frequency unit to described top line carries out.
39, method according to claim 28 wherein, starts the decoding that described at least a portion of described top line is carried out and comprises:
Before the user selects described top line, start the decoding that the video section to described top line carries out.
40, a kind of device in the wireless communication system comprises:
Controller is used to receive user input, a program importing identifying user to select based on described user, and before the user selects described program, start the decoding that at least a portion of described program is carried out; And
Data processor is used under the control of described controller the described at least a portion to described program and decodes.
41, according to the described device of claim 40, wherein, described controller is used to receive described user's input of the described program of highlighted demonstration.
42, according to the described device of claim 40, further comprise:
At least one decoder is used for after described program is decoded, and described at least a portion of described program is decompressed.
43, a kind of device in the wireless communication system comprises:
Be used to receive the module of user's input;
Be used for importing the module of the program that identifying user may select based on described user;
Be used for before the user selects described program, starting the module of the decoding that at least a portion of described program is carried out.
44, according to the described device of claim 43, wherein, the described module that is used to receive described user's input comprises: the module that is used to receive described user's input of the described program of highlighted demonstration.
45, according to the described device of claim 43, further comprise:
Be used for after finishing the decoding that described at least a portion of described program is carried out the module that the described at least a portion to described program decompresses.
46, a kind of method that is used for sending at wireless communication system multimedia programming comprises:
Begin to send the video section of program constantly at first; And
Begin to send the audio-frequency unit of described program second moment, wherein said second moment is than described first scheduled volume of having delayed time constantly, described video section and described audio-frequency unit are specified on the receiving entity and present together, and described scheduled volume corresponding on the described receiving entity to the processing delay of described video section with to the estimation difference between the processing delay of described audio-frequency unit.
47, a kind of method that is used for receiving at wireless communication system multimedia programming comprises:
Receive the video section of top line, the video section of described top line begins to be sent out at first constantly;
Receive the audio-frequency unit of described top line, the audio-frequency unit of described top line began to be sent out second moment, wherein said second moment is than described first scheduled volume of having delayed time constantly, described video section and described audio-frequency unit are specified on the receiving entity and present together, and described scheduled volume corresponding on the described receiving entity to the processing delay of described video section with to the estimation difference between the processing delay of described audio-frequency unit;
Handle the audio-frequency unit and the video section of the described described top line that receives; And after the processing that audio-frequency unit and the video section finished described top line carry out, present the audio-frequency unit and the video section of described top line.
48, according to the described method of claim 47, further comprise:
Obtain to receive the indication of second program;
Receive the audio-frequency unit and the video section of described second program;
Handle the audio-frequency unit and the video section of described second program; And
After the processing that audio-frequency unit and the video section finished described second program carry out, present the audio-frequency unit and the video section of described second program.
49, a kind of method that is used for receiving at wireless communication system multimedia programming comprises:
First component of reception and decoding top line, wherein, described first component is audio frequency or video; And
Receive and the second component of second program of decoding, wherein, described second component is audio frequency or video and is different from described first component.
50, according to the described method of claim 49, further comprise:
Reception is selected the user of the 3rd program;
Reception is used for to described the 3rd Overhead that program is decoded;
Continuation is decoded to first component of described top line, up to the Overhead that receives at described the 3rd program; And
After the Overhead that receives at described the 3rd program, first component of described the 3rd program is decoded.
51, according to the described method of claim 50, further comprise:
Reception is selected the user of described second program; And
After the user's selection that receives described second program, first component and the second component of described second program are decoded.
52, according to the described method of claim 49, further comprise:
Receive user's input;
Based on described user's input, the 3rd program that identifying user may be selected; And
Before the user selects described the 3rd program, begin first component of described the 3rd program is decoded.
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| US10/968,613 US7366462B2 (en) | 2003-10-24 | 2004-10-18 | Method and apparatus for seamlessly switching reception between multimedia streams in a wireless communication system |
| PCT/US2004/034884 WO2005043310A2 (en) | 2003-10-24 | 2004-10-22 | Method and apparatus for seamlessly switching reception between multimedia streams in a wireless communication system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106416277A (en) * | 2014-06-04 | 2017-02-15 | 索尼公司 | Transmission apparatus, transmission method, reception apparatus and reception method |
| CN107888972A (en) * | 2016-09-30 | 2018-04-06 | 法乐第(北京)网络科技有限公司 | Video switching method and device |
| CN111108753A (en) * | 2017-09-26 | 2020-05-05 | 索尼公司 | Receiving apparatus, receiving method, streaming apparatus, operating room system, and vehicle control system |
| CN112344955A (en) * | 2020-10-20 | 2021-02-09 | 方彭 | Bluetooth navigation system and method based on big data |
| CN112564851A (en) * | 2019-09-10 | 2021-03-26 | 华为技术有限公司 | Method, device and computer readable storage medium for Ethernet link rate switching |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005506815A (en) * | 2001-10-26 | 2005-03-03 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Method and apparatus for spatially extensible compression |
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- 2004-10-22 TW TW100148186A patent/TWI543647B/en not_active IP Right Cessation
- 2004-10-22 CN CN200480038715.0A patent/CN101088286B/en active Active
- 2004-10-22 TW TW105102570A patent/TWI604740B/en active
- 2004-10-25 AR ARP040103883 patent/AR046198A1/en unknown
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106416277A (en) * | 2014-06-04 | 2017-02-15 | 索尼公司 | Transmission apparatus, transmission method, reception apparatus and reception method |
| CN106416277B (en) * | 2014-06-04 | 2020-01-07 | 索尼公司 | Transmission device, transmission method, reception device, and reception method |
| CN107888972A (en) * | 2016-09-30 | 2018-04-06 | 法乐第(北京)网络科技有限公司 | Video switching method and device |
| CN111108753A (en) * | 2017-09-26 | 2020-05-05 | 索尼公司 | Receiving apparatus, receiving method, streaming apparatus, operating room system, and vehicle control system |
| CN112564851A (en) * | 2019-09-10 | 2021-03-26 | 华为技术有限公司 | Method, device and computer readable storage medium for Ethernet link rate switching |
| CN112564851B (en) * | 2019-09-10 | 2022-03-08 | 华为技术有限公司 | Method, device and computer readable storage medium for Ethernet link rate switching |
| CN112344955A (en) * | 2020-10-20 | 2021-02-09 | 方彭 | Bluetooth navigation system and method based on big data |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI604740B (en) | 2017-11-01 |
| CN101088286B (en) | 2014-08-20 |
| AR046198A1 (en) | 2005-11-30 |
| TW201215192A (en) | 2012-04-01 |
| TWI543647B (en) | 2016-07-21 |
| TW201618575A (en) | 2016-05-16 |
| TW200520577A (en) | 2005-06-16 |
| TWI362226B (en) | 2012-04-11 |
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