WO2005043783A1 - 携帯端末向け伝送方法及び装置 - Google Patents
携帯端末向け伝送方法及び装置 Download PDFInfo
- Publication number
- WO2005043783A1 WO2005043783A1 PCT/JP2004/015810 JP2004015810W WO2005043783A1 WO 2005043783 A1 WO2005043783 A1 WO 2005043783A1 JP 2004015810 W JP2004015810 W JP 2004015810W WO 2005043783 A1 WO2005043783 A1 WO 2005043783A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stream
- transmission
- service
- transmitted
- packet
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims description 52
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 230000010365 information processing Effects 0.000 claims 2
- 238000012545 processing Methods 0.000 description 25
- 238000010586 diagram Methods 0.000 description 20
- 239000000872 buffer Substances 0.000 description 14
- 206010036618 Premenstrual syndrome Diseases 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 8
- 239000000284 extract Substances 0.000 description 7
- 101150109471 PID2 gene Proteins 0.000 description 5
- 238000004891 communication Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000001824 photoionisation detection Methods 0.000 description 5
- 101000609957 Homo sapiens PTB-containing, cubilin and LRP1-interacting protein Proteins 0.000 description 4
- 102100039157 PTB-containing, cubilin and LRP1-interacting protein Human genes 0.000 description 4
- 238000012937 correction Methods 0.000 description 4
- 101100190466 Caenorhabditis elegans pid-3 gene Proteins 0.000 description 3
- 102100027581 Forkhead box protein P3 Human genes 0.000 description 3
- 101000861452 Homo sapiens Forkhead box protein P3 Proteins 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 101100243942 Caenorhabditis elegans pid-4 gene Proteins 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 101100243943 Caenorhabditis elegans pid-5 gene Proteins 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
- H04H60/11—Arrangements for counter-measures when a portion of broadcast information is unavailable
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/26—Arrangements for switching distribution systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
- H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64315—DVB-H
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/10—Arrangements for replacing or switching information during the broadcast or the distribution
Definitions
- the present invention relates to digital broadcasting for mobile terminals, and more particularly, to a transmission method and apparatus for digital data broadcasting for mobile terminals.
- the receiver realizes low power consumption by supplying power to the receiving unit only during a packet set transmission period during which a desired service is transmitted. (Hereinafter referred to as the time slice method)
- Patent document 1 EP1337071A2
- the present invention solves the above-mentioned conventional problems, and reduces the waiting time until playback is started by selectively receiving a time slice including content and data for zubbing at the time of zubbing.
- the purpose is to:
- the present invention relates to a transmission method in a broadcasting system, comprising the steps of: generating a first stream (intermittent data section) for burst transmission of a single content packet set for each service; Generating a second stream (continuous data portion) for transmitting packets at a rate according to the rate, wherein the second stream relates to the content being transmitted in the first stream.
- a transmission method characterized by transmitting information.
- burst transmission refers to transmission in which content is transmitted collectively in a short period of time and transmission is stopped for a while.
- intermittent data for a plurality of services is sequentially transmitted, and in the second stream, the first stream is transmitted by the first stream intermittent data unit.
- Content that is the same as the content sent by all or some of the services that are being sent.
- the first stream has high-quality data
- the second stream has high compression rate data having the same contents as the first stream but having a small amount of information. Is transmitted.
- the second stream of the present invention is related data based on the contents of the first stream, and it can be said that the data amount of the second stream is smaller than the data amount of the first stream.
- the second stream is a stream that is generated at a compression rate higher than the compression rate used when generating the first stream.
- the first stream includes data including high-quality audio and moving images
- the second stream includes a still image or a still image related to the first stream. Includes at least one of audio.
- At least one of the first stream and the second stream includes the second stream and a content transmitted in the first stream. Contains an information field indicating the association of the connection.
- an information field indicating the association between the second stream and the content transmitted in the first stream is included in a third stream.
- an information field indicating a relation between the second stream and the content transmitted in the first stream is included in a PMT of a PSI.
- a time information field between the transmission time of the packet set and the transmission time of the next packet set is included in the second stream.
- the present invention is also a transmission method for performing burst transmission of a packet set consisting of a single content for each service, and generating a first format packet set consisting of a single content for each service. Generating a second format packet set that contains all or some services and equivalent or related content transmitted in the first format packet set; and a first format packet set. And transmitting the packet set of the second format in the first stream in order.
- the packet set of the first format has high-quality data
- the packet set of the second format has the same contents as the packet set of the first format. Transmits high compression rate data with a small amount of information.
- the packet set of the first format includes data including high-quality audio and video
- the packet set of the second format includes a packet set of the first format. At least one of the related still image and sound is included.
- At least one of the first format packet set and the second format packet set includes the second format packet set and the first format packet set. Contains an information field indicating the relevance of the content being transmitted in the packet set
- the information field indicating the association between the contents of the packet set of the second format and the packet set of the first format and indicating the content of the content is an independent second stream. Included.
- the packet set of the second format and the packet set of the first format The information field indicating the relation of the content transmitted in the packet set of PSI is included in PMT of PSI.
- the content transmitted in the packet set of the second format and the content transmitted in the packet set of the first format have time stamps synchronized with each other.
- the content transmitted in the packet set of the second format and the packet set of the first format transmits information indicating a time stamp shift.
- the present invention provides a first stream for transmitting a packet set in bursts at a sufficiently high transmission rate in a short time and a second stream for transmitting packets at a transmission rate required for a service.
- the stream is transmitted by time-division multiplexing, and the second stream transmits, for example, low-quality data of the same content as the first stream, and receives the second stream that is always transmitted during subbing. After the subbing is completed, the first stream transmitted in a burst is received and reproduced.
- the present invention relates to a transmission apparatus in a broadcasting system, comprising: a first stream (intermittent data section) generating means for performing burst transmission of a packet set consisting of a single contentor for each service; Second stream (continuous data portion) generating means for transmitting packets at a speed according to the speed, wherein the second stream transmits information related to the content transmitted by the first stream.
- a transmission device characterized by transmitting.
- the present invention is a transmission method for performing burst transmission of a packet set consisting of a single content for each service, and means for generating a first format packet set consisting of a single content for each service.
- a content transmitting apparatus comprising: a packet set; and means for sequentially transmitting a packet set of a second format in a first stream.
- burst transmission and continuous transmission together by using burst transmission and continuous transmission together, power consumption can be suppressed by intermittently receiving the first stream, and during channel selection operations such as zubbing, other content can be instantaneously reproduced by playing the second stream. You can watch.
- the present invention also provides a transmitter for transmitting to a receiver using the above-described transmission method or content transmission method, a transmission method relating to the above-described transmission method or content transmission method, and a program for executing the same, and Provide a recorded recording medium.
- high-quality burst data and low-quality continuous data are multiplexed and transmitted, and continuous data that can be received at all times during zubbing viewing is reproduced, thereby reducing the waiting time when selecting a channel. You can do it.
- the influence of switching the mode of the receiver during reproduction can be reduced.
- FIG. 1 is a diagram illustrating a transmission method according to a first embodiment of the present invention.
- FIG. 2 is a diagram showing a data arrangement image on a transmission channel 14 according to the first embodiment of the present invention.
- FIG. 3 is a diagram showing a power control operation according to the first embodiment of the present invention.
- FIG. 4 is a diagram explaining a receiving method at the time of subbing reception of a stream in the first embodiment of the present invention.
- FIG. 5 is a diagram illustrating a transmission method according to a first modification of the first embodiment of the present invention.
- FIG. 6 is a diagram illustrating a transmission method according to a second modification of the first embodiment of the present invention.
- FIG. 7 is a diagram illustrating a transmission method according to a third modification of the first embodiment of the present invention.
- FIG. 8 is a diagram illustrating a transmission method according to the second embodiment of the present invention.
- FIG. 9 is a diagram showing a data arrangement image on a transmission channel 14 according to the second embodiment of the present invention.
- FIG. 10 shows a reception method at the time of zubbing reception of a stream according to the second embodiment of the present invention.
- FIG. 11 is a diagram illustrating a conventional example of the present invention.
- FIG. 12 is a diagram illustrating a transmission method according to the third embodiment of the present invention.
- FIG. 13 is a diagram showing another arrangement of subbing data in the third embodiment of the present invention.
- FIG. 14 is a diagram showing conversion from an IP packet to a TS packet.
- FIG. 15 is a diagram showing a state in which multipletus is performed by a multiplexer.
- the presentation period Tin can have up to 36 different services (for example, 36 TV channels).
- Screws can be sent in a time-division manner, and a new video signal is sent for each Tin.
- a program to which a certain channel or provider power is sent is called a service. Focusing on a specific service (eg, channel 1 program), the video signal is sent every period Tin, so it is called intermittent transmission.
- continuous transmission is a method of transmitting low-quality compressed signals every Tcon (about 23 ms) shorter than one frame period (for example, (1Z30) seconds).
- the present invention relates to a method of transmitting a stream in which intermittently transmitted packets and continuously transmitted packets are mixed. If only intermittent transmission is used, high-quality images can be viewed, but each service switch requires a waiting time of about 5 seconds. Intermittent transmission is not suitable for performing an operation of switching services one after another and searching for a desired service, that is, performing zapping. On the other hand, if only continuous transmission is used, even if the service is switched, it is possible to immediately watch the video of the service at the switching destination without waiting time. In the present invention, intermittent transmission and continuous transmission are mixed, so that services such as video can be received without waiting time even if zubbing is performed. Can be seen in quality images.
- FIG. 1 is a diagram illustrating generation of a transmission signal according to the present invention.
- Each piece of content is encoded in two qualities, high quality and low quality, resulting in a high quality IP (Internet Protocol) packet 7 and a low quality IP packet 7b.
- Each content source includes a high-quality encoder that generates the IP packet 7 and a low-quality encoder that generates the IP packet 7b, and is composed of independent real-time encoders.
- the high quality encoder has an internal clock CLa indicating real time
- the low quality encoder has an internal clock CLb indicating real time. Needless to say, the time of the internal clock CLa and the time of the internal clock CLb match.
- the same IP address is assigned to each of the IP packets 7 from the same content source, for example, the content source 2.
- Different content sources ie different services, have different IP addresses.
- the high-quality IP packet 7 and the low-quality IP packet 7b from the same content source may use the same IP address or different IP addresses.
- the high-quality encoder is capable of MPEG4 compression of video signals and content including Z or video signals at an average transmission rate of 350 kbps.
- the low-quality encoder can compress the same content using MPEG4 at an average transmission rate of 64 kbps.
- the compression method may be a method such as the WindowsMedia method, the QuickTime method, or the JPEG2000 method.
- Video and audio data MPEG4 compressed at an average transmission rate of 350 kbps is generated as RTP (Real-time Transport Protocol) data, and an RTP header is added.
- a time stamp Ta for synchronizing between transmission and reception is added to the RTP header.
- RTP data and RTP header are contained in RTP packets.
- RTP packets are generated as User Datagram Protocol (UDP) data and have a UDP header.
- DUP data and UDP header are stored in UDP packet.
- the UDP packet is generated as IP data and has an IP header.
- the IP data and IP header are contained in IP packet 7.
- the IP packet 7 thus encoded with high quality is input to the processing device 8 shown in FIG.
- the processing device 8 has a number of buffers corresponding to the number of content sources.
- P packets Since the IP packet is MPEG-compressed, the actual storage time is about (5Z36) seconds instead of 5 seconds.
- the processing unit PP1 converts the IP packet 7 into a DSM-CC (Digital Storage Media Command and Control) section, and further converts it into a TS (Transport Stream) packet, as shown in FIG.
- a TS packet has a fixed length (for example, 188 bytes).
- Each TS packet includes a TS header at the beginning.
- a packet HD for specifying the type of the TS packet, that is, a PID is added to the TS header. For example, PID1 is assigned to the PID of the TS packet including the service S1.
- PID2 for the PID of the TS packet including the service S2
- PID3 for the TS bucket including the service S3.
- Conversion from IP packets to TS packets is performed according to standard documents such as ISO / IEC 13818-1, ISO / IEC 13818-6, ETSI / DVB EN301192
- the plurality of TS packets to which PID1 has been added are sequentially output.
- the group of TS packets for about 5 seconds transmitted in this way is called burst 10.
- a block S1 output from the processing device 8 indicates a burst, and TS packets of the service S1 corresponding to a presentation for about 5 seconds are continuously included.
- the IP packet 7 of the service S2 corresponding to the period Tin is accumulated from the buffer B2
- the accumulated IP packet is sent to the processing unit PP1, where the IP packet is converted into a TS packet.
- PID2 is assigned to each converted TS packet as a packet ID.
- the plurality of TS packets to which PID2 is assigned are sequentially output.
- the block S2 output from the processing device 8 indicates a burst, and TS packets of the service S2 corresponding to a presentation of about 5 seconds are included continuously.
- TS packets of different services are output to the multiplexer 12 to be output for each burst.
- the low quality data will be described.
- MPEG4 compression to average transmission rate 64kbps The moving image and audio data thus generated are used to generate an IP bucket 7b in the same manner as the high-quality data in the procedure shown in FIG. Therefore, the RTP packet is also included in the IP packet 7b, and includes the time stamp Tb for synchronizing between transmission and reception.
- the low-quality encoded IP packet 7b is input to the processing device 9 shown in FIG.
- the processing device 9 has one buffer Bz, and accumulates IP packets 7b from all content sources in the order in which they are sent. If all or some of the IP packets 7b from different content sources overlap, a plurality of buffers may be provided similarly to the processing device 8. However, the capacity of the buffer may be a capacity that can store one IP packet 7b.
- the sent IP packet 7b is sent to the processing unit PP2, and is converted from an IP packet to a TS packet in the same manner as the processing unit PP1. All converted TS packets have the same PID, for example PIDX, regardless of service. PIDX is a unique PID and indicates that it is a TS packet for subbing.
- the TS packet from the processing device 9 is sent to the multiplexer 12.
- the multiplexer 12 is further connected to a PSI generator 18.
- the format of the low quality data is not limited to a format including both a moving image and a sound, and may be any one of a moving image, a still image, a sound, character information, or a combination thereof. .
- the format of low quality data may be dynamically determined according to conditions such as the number of bursts to be simultaneously serviced and the average transmission rate.
- the PSI generator 18 generates a PSI (Program Specific Information).
- PSI includes PAT (Program Association Table), PMT (Program Map Table), CAT (Conditional Access Table), and NIT (Network Information Table).
- PAT Program Association Table
- PMT Program Map Table
- CAT Contental Access Table
- NIT Network Information Table
- the multiplexer 12 includes three types of high-quality TS packets from the processing device 8, low-quality TS packets from the processing device 9, and PSI TS packets from the PSI generator 18. And incorporates them into one stream.
- For each of PAT and NIT one table is set for all services.
- For PMT different tables are set for each service.
- the positions where PAT, PMT, and NIT are inserted are specified in the above-mentioned standard.
- the low-quality TS packets are dispersedly inserted.
- the time difference Tzl between one low-quality TS packet S1 and the next low-quality TS packet S2 is about 0.65 msec.
- the time difference Tz2 between one low-quality TS packet S1 and the next low-quality TS packet S1 of the same service is about 23.5 msec.
- the time differences Tzl and Tz2 change when the transmission rates are different.
- the multiplexed stream is passed to a transmitter 13 as a transmission channel 14, and the transmitter 13 is sent out to a transmission path.
- the packet ID (PID) included in the header of the TS packet is determined as follows.
- High quality TS packet PID including code that differs for each service (a code indicating high quality may be included)
- Low quality TS packet same PID related to service (may include code for low quality)
- PMT TS packet PID that contains a different code for each service (a code that indicates PMT may be included)
- NIT TS packet 0X0010
- the PAT contains the data in the following correspondence table shown in Table 1.
- the PMT indicates the PID of the high quality TS packet of the service corresponding to the PMT. This data is written in the "elementary_PID" area of the PMT.
- the PID of the PMT corresponding to the service is specified from Table 1
- the PMT is specified by the PID of the PMT
- a high-quality TS packet is specified.
- the PMT includes a descriptor.
- the value of the program number set for each service and the IP address of the IP packet to which the service is sent are shown as a pair.
- PMT The IP address of service S1 is associated with the PMT specified by PID1.
- PMT specified by PMT—PID2 is associated with the IP address of service S2.
- a service-IP address mapping table can be obtained from the five PMTs.
- descriptor may be included in the NIT.
- SI Service Information
- the PSI generator 18 may be provided in the processing device 8 and included in a high-quality TS packet stream, or may be provided in the processing device 9 and included in a low-quality TS packet stream. .
- FIG. 2 shows an image of data arrangement on the transmission channel 14. Actually, SI or PSI is also transmitted. However, since it is similar to general digital broadcasting, illustration is omitted. When a signal having such a configuration is transmitted, a receiving method will be described with reference to the drawings.
- FIG. 3 is a diagram showing power supply control in the transmission method of the present invention, particularly when high quality data of the service S1 is received.
- the high quality data of the service S1 is sent in bursts as shown in FIG. Since the receiver takes about 250 ms from the start of burst reception to the output of a power packet, it starts power supply to the demodulation unit about 250 ms before the start of burst reception and receives the service S 1 transmitted in burst. Store data in internal buffer. After the end of the burst transmission, the power supply to the demodulation unit is stopped, but the playback unit plays back the content while reading data from the buffer at the rate required for playback while power is being supplied. As a result, power consumption can be reduced. (Hereinafter, such a state of intermittent reception will be referred to as an intermittent reception mode.)
- FIG. 4 is a diagram illustrating a receiving method at the time of subbing reception according to the present invention.
- the service S1 is received in the intermittent reception mode.
- the user interface such as the service selection button to change the service to S2
- the power of the receiving unit is turned on, and the Enter Bing mode.
- the receiver can convert the low-quality TS packet stream (also called subbing stream) to the S2 low-quality data. Remove the data and start playback. At the same time, it waits for the reception of the S2 high-quality data burst.
- the receiver extracts low-quality data of S3 from the stream for subbing and starts reproduction. At the same time, it waits for reception of S3 high-quality data burst. Further, when S1 is selected by a user operation at time t3, the receiver extracts the low-quality data of S1 from the subbing stream, starts reproduction, and waits for reception of the high-quality data burst of S1.
- the receiver extracts the low-quality data of the streaming force for subbing S4, starts reproduction, and starts the reproduction of the high-quality data burst of S4. Wait for reception.
- the burst of service 4 is transmitted at time t5
- the reception of the burst of service S4 is started immediately, the reproduction of high-quality data is started, and the mode shifts to the burst reception mode.
- the power supply to the receiving unit is stopped until time t7 when is transmitted.
- the correspondence table between the service and the PID for transmitting the service and the high-quality data is assumed to be transmitted by SI or PSI.
- the transmission format of the correspondence table is as follows. The transmission is not limited to burst 10 and may be transmitted in transport stream 11, or a receiver having a communication line may be transmitted via a communication line. The same applies to the correspondence table between services and IP addresses that transmit low-quality data. Alternatively, another Internet route may be used.
- the frequency at which the IP packet 7b is generated is lower than the frequency at which the IP packet 7 is generated. Since the high-quality encoder and the low-quality encoder are real-time encoders, the timing at which the IP packet 7 and the IP packet 7b are generated is substantially the same as the timing at which the actual video is sent.
- the time stamp for the same video is used. An error of ⁇ occurs between Ta and time stamp Tb. Therefore, when switching from high-quality data reproduction to low-quality data reproduction or vice versa, images become discontinuous. Modification 1 in which this discontinuous image is corrected to a continuous image, that is, a seamless image will be described.
- FIG. 5 is different from FIG. 1 in that a time stamp offset detector 16 is further provided.
- the time stamp offset detector 16 includes a time stamp Ta added to the RTP header for high-quality data indicating the presentation of a certain screen, and a time stamp Tb added to the RTP header for low quality indicating the presentation of the same screen. Is detected as a time stamp offset.
- This time difference ⁇ is input to the PSI generator 18. In the descriptor of the PMT, the value of the program number set for each service and the time difference ⁇ T are shown as a pair.
- the time difference ⁇ is sent to the receiving apparatus, and the receiving apparatus adds or subtracts ⁇ to the time stamp Tb of the low-quality data so that the video of the high-quality data and the video of the low-quality data are synchronized. I do.
- ⁇ may be added or subtracted from the time stamp Ta of the high quality data to synchronize the video of the high quality data with the video of the low quality data.
- the mode shifts to the burst reception mode, and the power supply to the reception unit is stopped from time t6 to time t7 when the next burst of S4 is transmitted.
- time stamps of the two streams can be synchronized, and it is possible to switch from low-quality data playback in zapping mode to high-quality data in intermittent reception mode.
- time stamp uses the time stamp in the RTP header included in the IP packet
- an MPEG packet can also be used. In this case, use the time stamp PCR in the MPEG packet!
- FIG. 6 is different from FIG. 1 in that a time stamp correction processing unit 17 is further provided.
- the time stamp correction processing unit 17 calculates the time difference ⁇ between the time stamp Ta of the screen having high quality data and the time stamp Tb of the screen of low quality data corresponding to the screen. Detected as a pump offset. Further, all the time stamps of one of the streams are corrected using the time difference ⁇ so that the reference clocks are equal in both streams. As a result, the same time stamp is given to the same screen between the IP packet 7 and the IP packet 7b. This enables seamless image switching.
- a third modification of the first embodiment for transmitting the data for subbing will be described with reference to FIG.
- a still image and audio are transmitted as data for subbing.
- FIG. 7 shows a data arrangement image on the transmission channel 14.
- reference numeral 10 denotes a time slice in which the high-quality data of the service 115 is transmitted.
- the average transmission rate of video and audio is 350 kbps and MPEG4 compression is performed.
- l lsl, l ls2, l ls3, lis 4, l ls5 are low-quality data for zubbing.
- the still image may be character information such as a program title.
- the number of services transmitted in the time slice is mixed with the DVB-T standard signal and transmitted, as in this example, the number is about several, and the time and the average transmission rate are 64kbps.
- the time slice duration approximately 130 msec
- FIG. 8 is a diagram illustrating generation of a transmission signal according to the present invention. 8 differs from FIG. 1 in that the output of the processing device 9 is input to the processing device 8 instead of the multiplexer 12, and the processing device 8 is further provided with a buffer B6.
- the low-quality TS packet stream 11 output from the processing device 9 is added to the buffer 6 for about 5 seconds, and is output from the processing device 8 as one burst 15.
- the burst 15 includes a TS packet group SO for subbing to which the same PID address is assigned, which corresponds to the low-quality TS packet stream 11.
- the section of the bursting 15 for subbing is provided with time information indicating the timing at which the corresponding high-quality burst is transmitted.
- a plurality of bursts 10 and bursts 15 for subbing are sequentially transmitted in bursts and sent to the multiplexer 12.
- the four types of tables PAT, PMT, CAT, and NIT generated by the PSI generator 18 are multiplied.
- the transmission channel is composed of high quality data that constitutes a burst for each service, and one burst of low quality data for subbing.
- FIG. 9 shows an image of data arrangement on the transmission channel 14. Actually, SI or PSI is also transmitted, but it is not shown because it is similar to general digital broadcasting.
- FIG. 10 is a diagram illustrating a receiving method at the time of subbing reception according to the present embodiment.
- the service S1 is received in the intermittent reception mode.
- the user interface such as the service selection button to change the service to S2
- the power of the receiving unit is turned on, and the Enter Bing mode.
- the receiver After receiving the subbing burst 15, the receiver uses the service-to-PID correspondence table and the service-to-IP address correspondence table obtained from the SI or PSI while the S2 is selected. Extract the low-quality data of S2 from and start playback. At the same time, it waits for the reception of the S2 high-quality data burst.
- the receiver extracts the low-quality data of S3 from the stream for subbing, and starts reproduction. At the same time, it waits for reception of S3 high-quality data burst. With the operations so far, the beginning of the burst of the service currently selected in the burst data is not detected! Therefore, in any case, the subbing mode is maintained.
- the receiver extracts the low-quality data of S4 from the bursting for subbing 15, starts reproduction, and waits for reception of the high-quality data burst of S4.
- the burst of service 4 when it is detected that the burst of service 4 is being transmitted, it immediately starts receiving the burst of service 4, starts reproducing high-quality data, and shifts to the burst reception mode.
- the power supply to the receiver is stopped until time t7 when the next burst of S4 is transmitted.
- the low-quality data may be data obtained by highly compressing high-quality data, or the same effect may be obtained even if only a still image and audio related to the content or only audio is used. Needless to say.
- the correspondence table between the service and the PID for transmitting the service and the high-quality data is assumed to be transmitted by SI or PSI, but the transmission format of the correspondence table is not limited to this.
- the transmission may be performed within the burst 10 and the transport stream 11, or may be performed via a communication line such as an Internet communication line if the receiver has a communication line.
- Service and transmission of low quality data The correspondence table of IP addresses is the same.
- the intermittent reception is performed even during the zubbing period, so that the low power consumption effect is higher than in the first embodiment.
- the third embodiment is an improvement of the transmission of the data for subbing of the first embodiment, and will be described with reference to FIGS.
- FIG. 12 of the present embodiment shows an image of data arrangement on the transmission channel 14.
- reference numeral 10 denotes a time slice in which high-quality data of the service 115 is transmitted, which is obtained by applying MPEG4 compression to an average video and audio transmission rate of 350 kbps.
- l lsl, 11 s2, l ls3, l ls4, l ls5 are low quality data for subbing, A still image lOkbyte representing a moving image transmitted by rice, and audio data for about 25 seconds, in which the audio transmitted in one time slice of high-quality data is compressed to approximately 8 kbps, transmitted in a package. It is.
- Fig. 12 assuming that service 1 is selected and received, service 1 subbing data for the first 5 seconds, service 2 subbing data for the next 5 seconds, and service 3 for the next 5 seconds. In the next 5 seconds, it is possible to receive the service 4 subbing data, and in the next 5 seconds, the service 5 subbing data. In this way, if the same time slice is received continuously for 25 seconds or more, all of the service zubbing data can be received over 25 seconds!
- FIG. 13 is a diagram showing another arrangement of the zubbing data, where the zubbing data in a service time slice is shifted by one every 5 seconds. Similarly, in Fig. 13, if the same time slice is received continuously for 25 seconds or more, all service subbing data can be received over 25 seconds!
- the receiver Each time the receiver receives the time slice, it keeps updating the data in the internal data storage area for subbing (subbing buffer).
- subbing When zubbing is started by user operation, etc., the data in the zubbing buffer can be played back, and still images and audio can be displayed without waiting for the power of the demodulation unit to be constantly turned on.
- IP address it is desirable that a different address be assigned to each service for the IP address of the IP packet so that the receiving side can process low quality data and high quality data without distinction. For example, it is desirable to assign the same IP address to IP packets of the same content, for example, S1-a and SI-b. However, different IP addresses can be used for IP packets carrying high-quality data and low-quality data with the same content.
- the subbing stream is composed of a plurality of services in one channel.
- the same effect can be obtained also in a case where a plurality of channels are transmitted as described for the subbing stream corresponding to the service and the subbing stream is included in each channel.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Mobile Radio Communication Systems (AREA)
- Television Systems (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04792938A EP1657835A4 (en) | 2003-10-30 | 2004-10-26 | MOBILEND DEVICE ORIENTED TRANSMISSION PROCESS AND DEVICE |
US10/560,312 US8250622B2 (en) | 2003-10-30 | 2004-10-26 | Method and apparatus for broadcasting to a portable terminal |
JP2005515124A JP4423263B2 (ja) | 2003-10-30 | 2004-10-26 | 携帯端末向け伝送方法及び装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-370550 | 2003-10-30 | ||
JP2003370550 | 2003-10-30 | ||
JP2003-413639 | 2003-12-11 | ||
JP2003413639 | 2003-12-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005043783A1 true WO2005043783A1 (ja) | 2005-05-12 |
Family
ID=34554749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/015810 WO2005043783A1 (ja) | 2003-10-30 | 2004-10-26 | 携帯端末向け伝送方法及び装置 |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP1657835A4 (ja) |
JP (1) | JP4423263B2 (ja) |
WO (1) | WO2005043783A1 (ja) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006114830A1 (ja) * | 2005-04-06 | 2006-11-02 | Matsushita Electric Industrial Co., Ltd. | ザッピングストリームのmpe-fecフレームへの配置方法及び受信装置 |
WO2007038726A2 (en) * | 2005-09-27 | 2007-04-05 | Qualcomm Incorporated | Methods and apparatus for service acquisition |
DE102006011628A1 (de) * | 2006-03-07 | 2007-09-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Betrieb eines Datenübertragungsnetzes |
JP2007274243A (ja) * | 2006-03-30 | 2007-10-18 | Brother Ind Ltd | コンテンツデータ配信システム、及び、コンテンツデータ配信方法、及び、端末装置、及び、同端末装置の動作プログラム |
EP1848133A2 (en) * | 2006-04-21 | 2007-10-24 | LG Electronics Inc. | Apparatus and method for transmitting a broadcast signal, method of reproducing a broadcast signal and apparatus for receiving a broadcast signal |
JP2007281868A (ja) * | 2006-04-06 | 2007-10-25 | Nippon Hoso Kyokai <Nhk> | 送信装置及び受信装置 |
EP1868307A2 (en) * | 2006-05-04 | 2007-12-19 | LG Electronics, Inc. | Transmitting and outputting content triggered by an event at the receiver |
EP1889473A2 (en) * | 2005-06-07 | 2008-02-20 | Nokia Corporation | System and associated terminal, method and computer program product for directional channel browsing of broadcast content |
EP1964376A2 (en) * | 2005-12-20 | 2008-09-03 | Sony Corporation | Mobile tv system and method with fast channel change |
JP2009528709A (ja) * | 2006-02-28 | 2009-08-06 | パナソニック株式会社 | モバイル動画受信のための改良型ザッピングサービス用の動画エンコーダおよびデコーダ |
JP2010246023A (ja) * | 2009-04-09 | 2010-10-28 | Fujitsu Ltd | 復調装置 |
JP2012510769A (ja) * | 2008-12-02 | 2012-05-10 | ノーテル ネットワークス リミテッド | 拡張チャネル・サーフィン |
US8229983B2 (en) | 2005-09-27 | 2012-07-24 | Qualcomm Incorporated | Channel switch frame |
KR101194824B1 (ko) | 2005-07-13 | 2012-10-25 | 삼성전자주식회사 | 디지털 방송 시스템에서의 채널 전환 장치 및 방법 |
KR101194823B1 (ko) | 2005-07-11 | 2012-10-25 | 삼성전자주식회사 | 추가 채널을 이용한 디지털 방송 채널 전환 시간 축소 장치및 그 방법 |
US8345743B2 (en) | 2006-11-14 | 2013-01-01 | Qualcomm Incorporated | Systems and methods for channel switching |
JP2013511198A (ja) * | 2009-11-13 | 2013-03-28 | サムスン エレクトロニクス カンパニー リミテッド | データ提供方法及びその装置、並びにデータ受信方法及びその装置 |
US8761162B2 (en) | 2006-11-15 | 2014-06-24 | Qualcomm Incorporated | Systems and methods for applications using channel switch frames |
US8908577B2 (en) | 2005-12-02 | 2014-12-09 | Qualcomm Incorporated | Solving IP buffering delays in mobile multimedia applications with translayer optimization |
US9197689B2 (en) | 2010-03-19 | 2015-11-24 | Samsung Electronics Co., Ltd. | Method and apparatus for adaptively streaming content including plurality of chapters |
US9277252B2 (en) | 2010-06-04 | 2016-03-01 | Samsung Electronics Co., Ltd. | Method and apparatus for adaptive streaming based on plurality of elements for determining quality of content |
US9699486B2 (en) | 2010-02-23 | 2017-07-04 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving data |
US9756364B2 (en) | 2009-12-07 | 2017-09-05 | Samsung Electronics Co., Ltd. | Streaming method and apparatus operating by inserting other content into main content |
US9967598B2 (en) | 2009-11-13 | 2018-05-08 | Samsung Electronics Co., Ltd. | Adaptive streaming method and apparatus |
US10425666B2 (en) | 2009-11-13 | 2019-09-24 | Samsung Electronics Co., Ltd. | Method and apparatus for adaptive streaming using segmentation |
USRE48360E1 (en) | 2009-11-13 | 2020-12-15 | Samsung Electronics Co., Ltd. | Method and apparatus for providing trick play service |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8780957B2 (en) | 2005-01-14 | 2014-07-15 | Qualcomm Incorporated | Optimal weights for MMSE space-time equalizer of multicode CDMA system |
MX2007011084A (es) | 2005-03-10 | 2007-11-15 | Qualcomm Inc | Clasificacion de contenido para procesamiento multimedia. |
US9113147B2 (en) | 2005-09-27 | 2015-08-18 | Qualcomm Incorporated | Scalability techniques based on content information |
US8654848B2 (en) | 2005-10-17 | 2014-02-18 | Qualcomm Incorporated | Method and apparatus for shot detection in video streaming |
US8948260B2 (en) | 2005-10-17 | 2015-02-03 | Qualcomm Incorporated | Adaptive GOP structure in video streaming |
EP1999883A4 (en) | 2006-03-14 | 2013-03-06 | Divx Llc | FEDERATED DIGITAL RIGHTS MANAGEMENT SYSTEM COMPRISING CONFIDENCE SYSTEMS |
US9131164B2 (en) | 2006-04-04 | 2015-09-08 | Qualcomm Incorporated | Preprocessor method and apparatus |
CN101682466A (zh) | 2007-05-16 | 2010-03-24 | 汤姆森特许公司 | 编码和解码信号的装置和方法 |
US10320500B2 (en) | 2007-09-18 | 2019-06-11 | Qualcomm Incorporated | Method and apparatus to enable fast channel switching with limited DVB receiver memory |
CN101828397A (zh) * | 2007-10-15 | 2010-09-08 | 汤姆森特许公司 | 编码和解码信号的装置和方法 |
CN107070585B (zh) | 2007-10-15 | 2021-05-04 | 交互数字Ce专利控股公司 | 传达突发模式活动的装置和方法 |
EP2124451A3 (en) * | 2008-05-23 | 2014-03-26 | Sony Corporation | Content server, information processing apparatus, network device, content distribution method, information processing method, and content distribution system |
JP2011530907A (ja) * | 2008-08-12 | 2011-12-22 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | チャネル切替のためのメディアストリームの分離 |
EP2169957A1 (en) * | 2008-09-26 | 2010-03-31 | Alcatel Lucent | Method for transmitting video chains with minimal zapping time |
CN102439989B (zh) | 2008-10-28 | 2014-12-10 | 思科技术公司 | 用于直播视频编码的流同步 |
CN105072454B (zh) | 2009-01-07 | 2019-04-19 | 索尼克Ip股份有限公司 | 针对在线内容的媒体指南的特定化、集中式、自动化创建 |
EP2507995A4 (en) | 2009-12-04 | 2014-07-09 | Sonic Ip Inc | SYSTEMS AND METHODS FOR TRANSPORTING ELEMENTARY BIT TRAIN CRYPTOGRAPHIC MATERIAL |
EP2357820A1 (en) * | 2010-02-08 | 2011-08-17 | Thomson Licensing | System and method for signaling programs from different Transport Streams |
US8914534B2 (en) | 2011-01-05 | 2014-12-16 | Sonic Ip, Inc. | Systems and methods for adaptive bitrate streaming of media stored in matroska container files using hypertext transfer protocol |
US9467708B2 (en) | 2011-08-30 | 2016-10-11 | Sonic Ip, Inc. | Selection of resolutions for seamless resolution switching of multimedia content |
US8964977B2 (en) | 2011-09-01 | 2015-02-24 | Sonic Ip, Inc. | Systems and methods for saving encoded media streamed using adaptive bitrate streaming |
US8909922B2 (en) | 2011-09-01 | 2014-12-09 | Sonic Ip, Inc. | Systems and methods for playing back alternative streams of protected content protected using common cryptographic information |
US9313510B2 (en) | 2012-12-31 | 2016-04-12 | Sonic Ip, Inc. | Use of objective quality measures of streamed content to reduce streaming bandwidth |
US9191457B2 (en) | 2012-12-31 | 2015-11-17 | Sonic Ip, Inc. | Systems, methods, and media for controlling delivery of content |
US9906785B2 (en) | 2013-03-15 | 2018-02-27 | Sonic Ip, Inc. | Systems, methods, and media for transcoding video data according to encoding parameters indicated by received metadata |
US10397292B2 (en) | 2013-03-15 | 2019-08-27 | Divx, Llc | Systems, methods, and media for delivery of content |
US9094737B2 (en) | 2013-05-30 | 2015-07-28 | Sonic Ip, Inc. | Network video streaming with trick play based on separate trick play files |
US9967305B2 (en) | 2013-06-28 | 2018-05-08 | Divx, Llc | Systems, methods, and media for streaming media content |
US9866878B2 (en) | 2014-04-05 | 2018-01-09 | Sonic Ip, Inc. | Systems and methods for encoding and playing back video at different frame rates using enhancement layers |
US10498795B2 (en) | 2017-02-17 | 2019-12-03 | Divx, Llc | Systems and methods for adaptive switching between multiple content delivery networks during adaptive bitrate streaming |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10507045A (ja) * | 1994-09-30 | 1998-07-07 | クゥアルコム・インコーポレイテッド | 通信ネットワークにおいて放送メッセージを提供するための方法と装置 |
JPH11225168A (ja) * | 1997-03-17 | 1999-08-17 | Matsushita Electric Ind Co Ltd | 画像・音声送信装置、画像・音声受信装置、データ処理装置、及びデータ処理方法、並びに、波形データの送信方法、装置、及び波形データの受信方法、装置、並びに、動画像の送信方法、装置、及び動画像の受信方法、装置 |
JP2002010225A (ja) * | 2000-06-26 | 2002-01-11 | Sony Corp | データ配信方法およびデータ配信システム |
JP2003115808A (ja) * | 2001-10-09 | 2003-04-18 | Sony Corp | コンテンツ配信方法、ディジタル放送受信方法およびディジタル放送受信装置 |
EP1337071A2 (en) * | 2002-02-14 | 2003-08-20 | Nokia Corporation | Transmission burst time indications for power saving |
WO2003073753A1 (en) * | 2002-02-27 | 2003-09-04 | Matsushita Electric Industrial Co., Ltd. | Information browsing method, transmitting apparatus and receiving apparatus |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7844214B2 (en) * | 2002-03-02 | 2010-11-30 | Nokia Corporation | System and method for broadband digital broadcasting |
WO2003088646A2 (en) * | 2002-04-08 | 2003-10-23 | Thomson Licensing S.A. | Apparatus and method for data caching to reduce channel change delay |
US20030196211A1 (en) * | 2002-04-10 | 2003-10-16 | Peter Chan | Systems, methods and apparatuses for simulated rapid tuning of digital video channels |
-
2004
- 2004-10-26 WO PCT/JP2004/015810 patent/WO2005043783A1/ja active Application Filing
- 2004-10-26 EP EP04792938A patent/EP1657835A4/en not_active Withdrawn
- 2004-10-26 EP EP20090151844 patent/EP2051510B1/en not_active Expired - Fee Related
- 2004-10-26 JP JP2005515124A patent/JP4423263B2/ja not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10507045A (ja) * | 1994-09-30 | 1998-07-07 | クゥアルコム・インコーポレイテッド | 通信ネットワークにおいて放送メッセージを提供するための方法と装置 |
JPH11225168A (ja) * | 1997-03-17 | 1999-08-17 | Matsushita Electric Ind Co Ltd | 画像・音声送信装置、画像・音声受信装置、データ処理装置、及びデータ処理方法、並びに、波形データの送信方法、装置、及び波形データの受信方法、装置、並びに、動画像の送信方法、装置、及び動画像の受信方法、装置 |
JP2002010225A (ja) * | 2000-06-26 | 2002-01-11 | Sony Corp | データ配信方法およびデータ配信システム |
JP2003115808A (ja) * | 2001-10-09 | 2003-04-18 | Sony Corp | コンテンツ配信方法、ディジタル放送受信方法およびディジタル放送受信装置 |
EP1337071A2 (en) * | 2002-02-14 | 2003-08-20 | Nokia Corporation | Transmission burst time indications for power saving |
WO2003073753A1 (en) * | 2002-02-27 | 2003-09-04 | Matsushita Electric Industrial Co., Ltd. | Information browsing method, transmitting apparatus and receiving apparatus |
Non-Patent Citations (2)
Title |
---|
HASUTA A.P. ET AL: "Digital Televion wa Sekai no Ketai ni Utsurunoka Dai 3 Bu <Gijutsu no Henka> Keitai . Ido Jushin o Shiya ni Denso Gijutsu o Kodoka", NIKKEI ELECTRONICS, no. 866, 2 February 2004 (2004-02-02), pages 108 - 113, XP002988153 * |
See also references of EP1657835A4 * |
Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006114830A1 (ja) * | 2005-04-06 | 2006-11-02 | Matsushita Electric Industrial Co., Ltd. | ザッピングストリームのmpe-fecフレームへの配置方法及び受信装置 |
EP1889473A4 (en) * | 2005-06-07 | 2009-11-11 | Nokia Corp | ASSOCIATED SYSTEM AND TERMINAL, METHOD AND SOFTWARE PRODUCT FOR NAVIGATION ON MULTIPLE CHANNELS IN BROADCAST CONTENT |
EP1889473A2 (en) * | 2005-06-07 | 2008-02-20 | Nokia Corporation | System and associated terminal, method and computer program product for directional channel browsing of broadcast content |
KR101194823B1 (ko) | 2005-07-11 | 2012-10-25 | 삼성전자주식회사 | 추가 채널을 이용한 디지털 방송 채널 전환 시간 축소 장치및 그 방법 |
KR101194824B1 (ko) | 2005-07-13 | 2012-10-25 | 삼성전자주식회사 | 디지털 방송 시스템에서의 채널 전환 장치 및 방법 |
CN105407362A (zh) * | 2005-09-27 | 2016-03-16 | 高通股份有限公司 | 服务获取的方法和设备 |
US8229983B2 (en) | 2005-09-27 | 2012-07-24 | Qualcomm Incorporated | Channel switch frame |
US8612498B2 (en) | 2005-09-27 | 2013-12-17 | Qualcomm, Incorporated | Channel switch frame |
WO2007038726A3 (en) * | 2005-09-27 | 2007-05-31 | Qualcomm Inc | Methods and apparatus for service acquisition |
CN105407362B (zh) * | 2005-09-27 | 2018-10-02 | 高通股份有限公司 | 服务获取的方法和设备 |
JP2009519619A (ja) * | 2005-09-27 | 2009-05-14 | クゥアルコム・インコーポレイテッド | サービス取得(serviceacquisition)のための方法および装置 |
KR100966067B1 (ko) * | 2005-09-27 | 2010-07-02 | 퀄컴 인코포레이티드 | 서비스 획득 방법 및 장치 |
WO2007038726A2 (en) * | 2005-09-27 | 2007-04-05 | Qualcomm Incorporated | Methods and apparatus for service acquisition |
US8908577B2 (en) | 2005-12-02 | 2014-12-09 | Qualcomm Incorporated | Solving IP buffering delays in mobile multimedia applications with translayer optimization |
EP1964376A4 (en) * | 2005-12-20 | 2009-12-02 | Sony Corp | MOBILE TV SYSTEM AND METHOD WITH QUICK CHANNEL CHANGE |
EP1964376A2 (en) * | 2005-12-20 | 2008-09-03 | Sony Corporation | Mobile tv system and method with fast channel change |
JP2009528709A (ja) * | 2006-02-28 | 2009-08-06 | パナソニック株式会社 | モバイル動画受信のための改良型ザッピングサービス用の動画エンコーダおよびデコーダ |
DE102006011628A1 (de) * | 2006-03-07 | 2007-09-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Betrieb eines Datenübertragungsnetzes |
DE102006011628B4 (de) * | 2006-03-07 | 2007-10-31 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Betrieb eines Datenübertragungsnetzes |
JP2007274243A (ja) * | 2006-03-30 | 2007-10-18 | Brother Ind Ltd | コンテンツデータ配信システム、及び、コンテンツデータ配信方法、及び、端末装置、及び、同端末装置の動作プログラム |
JP4539598B2 (ja) * | 2006-03-30 | 2010-09-08 | ブラザー工業株式会社 | コンテンツデータ配信システム、及び、コンテンツデータ配信方法、及び、端末装置、及び、同端末装置の動作プログラム |
JP2007281868A (ja) * | 2006-04-06 | 2007-10-25 | Nippon Hoso Kyokai <Nhk> | 送信装置及び受信装置 |
EP1848133A3 (en) * | 2006-04-21 | 2011-05-25 | Lg Electronics Inc. | Apparatus and method for transmitting a broadcast signal, method of reproducing a broadcast signal and apparatus for receiving a broadcast signal |
EP1848133A2 (en) * | 2006-04-21 | 2007-10-24 | LG Electronics Inc. | Apparatus and method for transmitting a broadcast signal, method of reproducing a broadcast signal and apparatus for receiving a broadcast signal |
US8531607B2 (en) | 2006-04-21 | 2013-09-10 | Lg Electronics Inc. | Apparatus for transmitting broadcast signal, method thereof, method of producing broadcast signal and apparatus for receiving broadcast signal |
EP1868307A3 (en) * | 2006-05-04 | 2011-03-09 | LG Electronics Inc. | Transmitting and outputting content triggered by an event at the receiver |
EP1868307A2 (en) * | 2006-05-04 | 2007-12-19 | LG Electronics, Inc. | Transmitting and outputting content triggered by an event at the receiver |
US8345743B2 (en) | 2006-11-14 | 2013-01-01 | Qualcomm Incorporated | Systems and methods for channel switching |
US8761162B2 (en) | 2006-11-15 | 2014-06-24 | Qualcomm Incorporated | Systems and methods for applications using channel switch frames |
JP2012510769A (ja) * | 2008-12-02 | 2012-05-10 | ノーテル ネットワークス リミテッド | 拡張チャネル・サーフィン |
JP2010246023A (ja) * | 2009-04-09 | 2010-10-28 | Fujitsu Ltd | 復調装置 |
JP2013511198A (ja) * | 2009-11-13 | 2013-03-28 | サムスン エレクトロニクス カンパニー リミテッド | データ提供方法及びその装置、並びにデータ受信方法及びその装置 |
US9860573B2 (en) | 2009-11-13 | 2018-01-02 | Samsung Electronics Co., Ltd. | Method and apparatus for providing and receiving data |
US9967598B2 (en) | 2009-11-13 | 2018-05-08 | Samsung Electronics Co., Ltd. | Adaptive streaming method and apparatus |
US10425666B2 (en) | 2009-11-13 | 2019-09-24 | Samsung Electronics Co., Ltd. | Method and apparatus for adaptive streaming using segmentation |
USRE48360E1 (en) | 2009-11-13 | 2020-12-15 | Samsung Electronics Co., Ltd. | Method and apparatus for providing trick play service |
US9756364B2 (en) | 2009-12-07 | 2017-09-05 | Samsung Electronics Co., Ltd. | Streaming method and apparatus operating by inserting other content into main content |
US9699486B2 (en) | 2010-02-23 | 2017-07-04 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving data |
US9197689B2 (en) | 2010-03-19 | 2015-11-24 | Samsung Electronics Co., Ltd. | Method and apparatus for adaptively streaming content including plurality of chapters |
US9277252B2 (en) | 2010-06-04 | 2016-03-01 | Samsung Electronics Co., Ltd. | Method and apparatus for adaptive streaming based on plurality of elements for determining quality of content |
Also Published As
Publication number | Publication date |
---|---|
EP2051510B1 (en) | 2013-08-14 |
EP2051510A3 (en) | 2010-06-23 |
EP1657835A1 (en) | 2006-05-17 |
EP2051510A2 (en) | 2009-04-22 |
EP1657835A4 (en) | 2008-12-10 |
JP4423263B2 (ja) | 2010-03-03 |
JPWO2005043783A1 (ja) | 2007-11-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4423263B2 (ja) | 携帯端末向け伝送方法及び装置 | |
US8250622B2 (en) | Method and apparatus for broadcasting to a portable terminal | |
WO2005043784A1 (ja) | 複数サービスが多重化された放送波の受信装置および受信方法 | |
KR100398610B1 (ko) | 멀티미디어 컨텐츠에 동기화된 메타데이터 전송 장치 및방법 | |
CN100401784C (zh) | 数字多媒体数据接收机的数据同步方法和设备 | |
US8037497B2 (en) | Fast channel switching method and apparatus for digital broadcast receiver | |
CN101827271B (zh) | 音频视频同步方法、装置以及数据接收终端 | |
JP4362734B2 (ja) | 同期再生システム | |
US20060161676A1 (en) | Apparatus for IP streaming capable of smoothing multimedia stream | |
CN101151897B (zh) | 在数字广播接收机中处理数据的设备和方法 | |
CA2419609C (en) | Dynamic quality adjustment based on changing streaming constraints | |
JP5210987B2 (ja) | 番組受信装置、番組受信方法および番組受信プログラム | |
JP4192766B2 (ja) | 受信装置および方法、記録媒体、並びにプログラム | |
KR20160106069A (ko) | 멀티미디어 데이터 재생 방법 및 장치 | |
KR20050073214A (ko) | Pvr 및 pvr 기능을 갖는 dmb 수신기 | |
JP5244764B2 (ja) | デジタル放送受信装置及びプログラム | |
KR101303258B1 (ko) | 디지털 방송수신기의 다중화면 표시장치 및 방법 | |
JP2008016894A (ja) | 送信装置及び受信装置 | |
KR101304888B1 (ko) | 다중 주파수 채널을 사용하는 디지털 방송수신기의서비스채널 변경 장치 및 방법 | |
KR101262949B1 (ko) | 디지털 방송수신기의 서비스채널 변경 장치 및 방법 | |
KR20080005815A (ko) | 디지털 방송수신기의 다중화면 표시장치 및 방법 | |
KR101229896B1 (ko) | 다중 주파수 채널을 사용하는 디지털 방송수신기의서비스채널 변경 장치 및 방법 | |
KR20080058991A (ko) | 휴대 단말기의 디지털 방송 재생 방법 및 장치 | |
KR101358709B1 (ko) | 디지털 방송수신기의 서비스채널 변경 장치 및 방법 | |
KR20080058993A (ko) | 디지털 방송수신기의 표시장치 및 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200480021911.7 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref document number: 2006120378 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10560312 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004792938 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005515124 Country of ref document: JP |
|
WWP | Wipo information: published in national office |
Ref document number: 2004792938 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10560312 Country of ref document: US |