CN101375516A - Methods and systems for signal insertion - Google Patents
Methods and systems for signal insertion Download PDFInfo
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- CN101375516A CN101375516A CNA2006800349270A CN200680034927A CN101375516A CN 101375516 A CN101375516 A CN 101375516A CN A2006800349270 A CNA2006800349270 A CN A2006800349270A CN 200680034927 A CN200680034927 A CN 200680034927A CN 101375516 A CN101375516 A CN 101375516A
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Abstract
Methods and systems that support downstream media signal insertion into a digital signal without affecting digital signal quality is presented here. The methods and systems can utilize pre-defined bitrate values assigned to media signals and allocate that bitrate to a portion of a digital signal that will be replaced by the media signal. The methods are equally applicable to both open and closed-loop encoding systems.
Description
The cross reference of related application
The application requires the interim patent No.60/703 of the U.S. of submission on July 29th, 2005, and the priority of the U.S. Patent No. 11/460,543 that on July 27th, 912 and 2006 submitted to is included the full content of these two patents in this specification by reference.
Background technology
The appearance of MPEG-2 digital video technology is in the quality and the quantitative aspects potentiality of having brought huge advance made of programming.Simultaneously, this technology has significantly increased the complexity of managing video.An example of these complexities is to be inserted in the digital signal with second bit rate the media signal with first bit rate is descending.This first bit rate and this second bit rate are inequality, cause the excessive utilization or the underutilization of bit rate.In the context of video ads (ad), the local advertising insertion system makes that wired multiplexer and broadcasting branch can be before program be passed to the spectators of family, among the regional program that advertisement that this locality is produced and short program are inserted into long-distance distribution.This advertisement is inserted and can be finished by descending connector inserts advertisement in the video flowing of precoding structure.In this structure, original MPEG-2 that exists in the one or more channels in multiplexer or bit stream H.264, the bit stream of the advertisement of being read from Advertisement Server replaces.Downstream ad is inserted through revises the multiplexed performance that influences closed loop or open loop coded system, and this is multiplexed to be created by the available bits in the different channel that does not comprise this insertions advertisement being optimized distribution.Insert information owing to when establishment is multiplexed, incorporate downstream ad into, so cause the video quality in the given channel bandwidth to descend or the channel quantity minimizing.The bit rate that inserts advertisement may be incomplete same with the bit rate of the MPEG-2 stream that is replaced.Therefore, the bit rate of this multiplexed polymerization may surpass channel bandwidth after downstream ad is inserted, and one or more the speed reduction that this must make in these channels causes the video quality reduction.For fear of the needs that carry out the downstream rate shaping in closed loop or open loop coding, system can expect that downstream ad inserts the video bitrate that generates polymerization than low multiplexed of transmission channel bandwidth.This conservative way supports advertisement to insert, but when not having advertisement to insert, can reduce multiplexed capacity.Because insert average 5-10 minute advertisement in common one hour, so this method causes in all the other time bandwidth underutilizations.
This area needs a kind of the support that downstream media signal is inserted into the system that does not influence digital signal quality in the digital signal.
Summary of the invention
The provided herein support is inserted into the method and system that does not influence digital signal quality in the digital signal with downstream media signal.This method and system can utilize the predefined bit-rates values of distributing to media signal (for example, advertisement), and gives a part of digital signal (for example, mpeg stream) that will be replaced by this media signal with this bit-rate allocation.The advantage of this method and system will be achieved and obtain by element and the combination of specifically noting in appended claims.Should be appreciated that aforesaid general description and following detailed description all are exemplary and indicative, and nonrestrictive.
Description of drawings
Comprise in this manual and form this specification a part description of drawings the embodiment of these method and systems, and and this specification one be used from the principle of explaining these method and systems.
Fig. 1 is the system block diagram that explanation can be carried out the closed system of disclosed method.
Fig. 2 is the system block diagram that explanation can be carried out the open system of disclosed method.
Fig. 3 is the logical flow chart of basic step of the exemplary realization of the disclosed method of explanation.
Embodiment
Before these method and systems of disclosure and description, should be appreciated that the present invention is not limited to specific synthetic method, specific assembly or concrete combination, because these certainly change.Should be appreciated that also the technical term of Shi Yonging only is used to describe the purpose of specific embodiments herein, and be not intended to restriction.
Comprise a plurality of referents as employed singulative " ", " one " and " being somebody's turn to do " in specification and the appended claims, unless except context clearly stipulates.Therefore, such as mention " encoder " comprise encoder mixing, mention that " encoder " comprises mixing of two or more such encoders etc.
Scope can be expressed as from " approximately " occurrence herein, and/or to " approximately " another occurrence.When expressing such scope, another embodiment comprises from this occurrence and/or to this another occurrence.Equally, when by using antecedent " approximately " when value is expressed as approximation, be interpreted as this occurrence and form another embodiment.The end points that should also be understood that each scope all is significant with respect to another end points with being independent of this another end points.
The meaning of " optionally " or " alternatively " is that incident or the situation described subsequently may take place also may not take place, and this explanation comprises situation that described incident or situation take place and situation about not taking place.
By with reference to the following detailed description of the preferred embodiment of these method and systems and the embodiment that comprises herein, and accompanying drawing and aforesaid and following description thereof, can be more readily understood the present invention.This method and system can be implemented in the software, and the part of this software is positioned at this encoder, and a part is arranged in the multiplexer of open cycle system or the rate controller of closed-loop system.
Described method and system belongs to the category that media signal is inserted digital signal.Media signal and digital signal can comprise video, audio frequency and combination thereof.Example includes, but are not limited to mpeg stream, advertisement, film, song, video frequency program, audio clips etc.For illustrative purposes, these method and systems are to describe in the context that advertisement is inserted at this.
I. conventional method
A kind of media signal that is used to provided herein inserts the method for carrying out Bit Allocation in Discrete, comprising: receive a plurality of medium inputs by a plurality of encoders; Should a plurality of medium inputs convert a plurality of digital signals to; By these a plurality of encoders first message is inserted in these a plurality of digital signals at least one, this article one message indication media signal access point and media signal pick out a little; Send second message by these a plurality of encoders to rate controller, this second message is indicated media signal access point and media signal for each digital signal and is picked out a little; These a plurality of encoders are synchronized to a common time reference; The media signal access point and the media signal of this digital signal of harmonizing pick out a little; And according to this media signal coding, between media signal access point and media signal pick out a little, to having the media signal access point and picking out a little each digital signal allocation bit rate.
For example, this medium input can be video input, audio frequency input etc.For example, this media signal can be advertisement, film, song, video frequency program, audio clips etc.
If with constant bit rate this media signal of encoding, then this method can also comprise and receives the predefine bit rate that is used for media signal.The bit rate that is distributed can be that the encoder complexity of the program that inserted of this predefine bit rate and this media signal is uncorrelated.
If with this media signal of variable bit rate coding, then the bit rate that is distributed can be the maximum of this variable bit rate, the encoder complexity of the program that is inserted with this media signal is uncorrelated.
Also provide a kind of media signal that is used to insert the method for carrying out Bit Allocation in Discrete herein, having comprised: received a plurality of medium inputs by a plurality of encoders; Should become a plurality of digital signals by a plurality of medium input codings; By these a plurality of encoders first message is inserted in these a plurality of digital signals at least one, this first message indication media signal access point and media signal pick out a little; And according to the media signal coding, to each digital signal allocation bit rate with first message.
For example, this medium input can be video input, audio frequency input etc.For example, this media signal can be advertisement, film, song, video frequency program, audio clips etc.
This method can also comprise: send second message by these a plurality of encoders to rate controller, this second message is indicated media signal access point and media signal for each digital signal and is picked out a little, and by this rate controller these a plurality of encoders is synchronized to a common time reference; Media signal access point and media signal that adjustment has the digital signal of second message pick out a little.
If with constant bit rate this media signal of encoding, then this method can also comprise and receives the predefine bit rate that is used for media signal.The bit rate that is distributed can be this predefine bit rate, and the encoder complexity of the program that is inserted with this media signal is uncorrelated.
If with this media signal of variable bit rate coding, then the bit rate that is distributed can be the maximum of this variable bit rate, the encoder complexity of the program that is inserted with this media signal is uncorrelated.
II. general introduction is inserted in advertisement
The multiple method that media signal (comprising advertisement) inserts that is used for is arranged.Up to date, most of advertisement insertion systems are all simulated fully.Program is distributed to wired multiplexer with the ntsc video that has analog cue-tone (cue-tone).Prompt tone sends signal to local operator, replaces to local advertisement with the advertisement with the whole nation.Equipment (for example connector and memory device) is inserted in advertisement can be used for local the insertion.Memory device (for example magnetic tape station) can be used for stores advertisements.
Along with the appearance of digital compression video, most of advertisement insertion systems mixed system substitute.In hybrid system, advertisement is stored in the local storage with MPEG-2 compressed format, such as on Advertisement Server; Internet communication to this multiplexer or headend can comprise a plurality of data flow, and this propagation can simulate, and perhaps this propagation can be by digital coding in advance.From this multiplexer be transmitted into wired/satellite distributor or to the channel in user residence also can be simulation or numeral.
If this Internet communication is the analog signal that embeds analog cue-tone, then retrieve this digital advertisement from home server, decompress and convert analog signal to.When this analog ad was ready to use, this analog splicer switched to this local advertising from this Internet communication.In the end of this advertisement, this connector switches back this Internet communication.If this channel is digital, the simulation of this connector output can be encoded as digital.
If this Internet communication is the digital signal with embedded cue, then this digital prompt signal is converted into the on-off signal, and this digital communication is converted back to analog signal.If this channel is digital, the simulation of this connector is exported by digital coding.If this Internet communication and this channel all are digital, then this propagation and this advertisement were converted into analog signal before advertisement is inserted.Then before being delivered to wired/satellite distribution device or user, the analog content of the inserting advertisement digital signal of encoding back.The conversion of getting back to numeral from digital to analogy then again is the process of a costliness, and video quality variation in conversion.
In order to overcome and analog cue-tone and the relevant restriction of analog/hybrid ad insertion system, especially in compressed video delivery environments, wired industry has begun digital program insertion (DPI), initial purpose is to create one group of DPI standard, and existing analogue/hybrid ad insertion system---the equipment of creating on these standards also can use jointly to help replacement.
This first standard, SCTE 35 2001 (DVS253 originally) is used for wired digital program and inserts prompting message, supports to be used for the joint that digital program inserts the MPEG-2 stream of (comprising the advertisement insertion).Planning standard, SCTE 30 2001 (DVS380 originally), digital program inserts and engages API, has created a kind of standardized method that is used for the communication between server and connector in order to insert content in any one MPEG-2 output multiplexer of connector.In 2003, SCTE 35 was strengthened significantly, to develop senior DPI function.The SCTE35 standard that strengthens makes it possible to realize targeted advertisements and the application that triggers At All Other Times, for example network/this locality storage.DPI working group is being devoted to create new draft always, to be standardized in the subsystem in the end-to-end structure of DPI.These comprise that automated system arrives compressibility API, Advertisement Server file format, flow system to advertisement insertion system API and client-based advertisement API.
Junction point in mpeg 2 transport stream provides the chance that switches to another program from a program.They indicate the position of a switching or the position of switching in this bit stream.Access point is the point that ad stream can begin to replace original program stream in the MPEG bit stream.Pick out a little is that the point that finishes is inserted in advertisement in the bit stream.Interval between splice-break is defined in access point and picks out is a little carried out downstream ad in this interim and is inserted.
III. the media signal in closed-loop system inserts
Fig. 1 shows the exemplary closed-loop system that can implement disclosed method therein.Closed loop MPEG2 coded system comprises the set of number encoder, and (101a, b is c...) with a closed loop rate controller (shown in block diagram 106).The closed loop coded system is by the encoder under the management that dynamically is adjusted at rate controller (106) (101a, b, coding bit rate c...), and improved compression efficiency or more channel are provided in given bandwidth.(101a, b c...) can use prediction (look-ahead) treatment technology to encoder in closed-loop system, to estimate the encoder complexity of a digital signal (MPEG bit stream for illustrative purposes).Then can be with (encoder complexity information c...) is delivered on the rate controller (106) for 101a, b from the different coding device.This rate controller (106) uses this complexity information, with about will (c...) bit rate of Shi Yonging is made the decision of concentrating and optimizing, so that the summation of their bit rate is equal to or less than the transmission channel bandwidth for 101a, b by the different coding device.MPEG bit stream from this encoder can be input to multiplexer then, this multiplexer is created a MPTS (MPTS) in conjunction with each stream.This rate controller (106) is illustrated as different entities with this multiplexer (102), but they can be the parts of single physical system.
Downstream media signal (for the purpose of illustration, this signal is advertisement) is inserted through revises the multiplexed performance that influences the closed loop coded system, and this is multiplexed to be created by the available bits of optimizing in the different channel that does not comprise this insertion advertisement that distributes.This causes video quality decline or channel quantity in the given channel bandwidth to tail off, because underlying cause:
The bit rate of the advertisement of inserting may be incomplete same with the bit rate of the MPEG-2 stream that just is being replaced.Therefore, this multiplexed aggregate bit rate may be greater than this channel bandwidth, and this needs the speed of one or more channels to reduce, and causes the video quality variation.This speed reduces the quality that has seriously influenced the channel of encoding with low bit rate.
For fear of the needs that speed is adjusted, this closed-loop system can expect that downstream ad inserts the video bitrate that generates polymerization than low multiplexed of transmission channel bandwidth.This conservative approach supports ad is inserted, but has reduced multiplexed capacity when not having advertisement to insert.Owing to insert average 5-10 minute advertisement in common one hour, so this method causes bandwidth usage deficiency in all the other time.
Disclosed closed-loop system is supported downstream ad to insert and is not influenced the video quality performance of this system.The input of a plurality of analog medias (for illustration purpose, be video input (100a, b, c...)), can (101a, b c...) receives and digital coding becomes the MPEG bit stream by digital video code.DPI message can (101a, b c...) be inserted in this MPEG bit stream by this encoder.This DPI message sends in can being with in this mpeg stream, defines as the SCTE-35 standard.This DPI message can followingly produce.The DTMF prompt tone can be provided in and is present in the input of this analog video (100a, b is c...) in the simulated audio signal in, with indication advertisement insertion point.(101a, b c...) can receive this DTMF prompt tone to this encoder, and they are converted into SCTE-35 message.Alternatively, prompt tone can be converted into junction closure, and (external equipment (not shown) c...) is converted into DVS525 message for 101a, b by being connected to this encoder then.Then, these DVS525 message can by this encoder (101a, b c...) use generating and to insert SCTE-35 message, this message so that by ad splicer 104 uses to insert advertisement.
Encoder (101a in closed-loop system, b, when c...) receiving a DTMF prompt tone, junction closure signal or DVS525 message, except being SCTE-35 message of this connector (104) generation, encoder (101a, b c...) can also generate a privately owned media advertisement and insert (mediaad-insert) information and sending to this rate controller (106), and this message is indicated the access point of this downstream ad insertion and picked out a little.This rate controller illustrates with a self-contained equipment in Fig. 1, yet this rate controller (106) also can be included in this multiplexer (102).(101a, b c...) receive these advertisements and insert information, and this rate controller (106) accurately is informed in the joint-interruption of all different programs that will carry out the advertisement insertion on one section given interval by all encoders from closed-loop system.(101a, b c...) can use by the employed common time reference of this rate controller (106) to come synchronously this encoder, and (advertisement c...) is inserted the access point of message and picked out a little for 101a, b from the different coding device with interim adjustment.
This rate controller (106) can insert the information of message sink in conjunction with passing through this advertisement in the following manner:
If this advertisement that will insert in concrete program is with a constant bit rate encode (being defined as DPI_avail speed), and this DPI_avail rate value of predefine, this rate controller (106) just can be to the DPI_avail of that concrete channel allocation advertisement speed so, and is uncorrelated with the encoder complexity of this program.Because this part mpeg stream will engage at this-intercourse substituted by this advertisement, so this guarantees that aggregate bit rate altogether do not cross this channel bandwidth during the downstream ad insertion.This needing have been avoided any speed to reduce.The DPI_avail bit-rates values that is used for these advertisements can be provided by the service provider.This has also simplified the design of downstream ad splicer (104), does not carry out any speed adjustment because it requires.
If will be inserted into the advertisement of concrete program is with variable bit rate coding, and this Maximum Bit Rate value of predefine, then this rate controller (106) can be to the Maximum Bit Rate of this concrete channel allocation advertisement, and the encoder complexity of this Maximum Bit Rate and this program is uncorrelated.
(the MPEG bit stream with the SCTE-35 message that is used for this ad splicer (104) c...) can be received by this multiplexer (102), and merge in the single channel for 101a, b from encoder.Downstream ad splicer (104) can receive this stream from this multiplexer (102) via network (shown in square frame 107).(c...) access point of the advertisement of Cha Ruing and picking out a little can be used DPISCTE-35 message discern by downstream ad splicer (104) for 101a, b by encoder.This downstream ad splicer (104) can will be inserted this stream from the advertisement of Advertisement Server (103) retrieval.
By using above-mentioned strategy, in a single day this closed-loop system has guaranteed to have in one or more these programs downstream ad to insert, and this information is suitably being incorporated into in the budget of encoder allocation bit by this rate controller (106).This strategy has been avoided any needs to changing down after advertisement is inserted, and has also avoided inserting for the advertisement of expection the needs of reserved bandwidth, and that can cause underutilization when not having advertisement to insert.
IV. the media signal in open system inserts
Fig. 2 has illustrated a kind of exemplary open system of implementing disclosed method.A plurality of analog media inputs (are imported (as square frame 100a, b for video for the purpose of illustration,, c... shown in)) can pass through digital encoder (as square frame 101a, b is shown in the c...) reception, and become digital signal (for the purpose of illustration, being the MPEG bit stream) by digital coding.This encoder (101a, b, c) can use message (for example DPI or SCTE-35 message) insert this downstream media signal (for the purpose of illustration, being advertisement) access point and pick out a little, use for this ad splicer (104).By example, in can being with in mpeg stream, message sends, as the SCTE-35 standard definition.Message can (101a, b c...) insert by encoder.
The DTMF prompt tone can be provided in the analog video input, and (100a, b is in simulated audio signal c...), to indicate this media signal insertion point.(101a, b c...) can receive the DTMF prompt tone to encoder, and they are converted into message (for example DPI or SCTE-35 message).Alternatively, this prompt tone can be converted into junction closure, and (external equipment (not shown) c...) changes into DVS 525 message for 101a, b by being connected to this encoder then.Then, these DVS 525 message can by this encoder (101a, b, c...) use with message (for example DPI or SCTE-35 message) is generated and is inserted into they separately by among the used bit stream of downstream ad splicer (104), to insert advertisement.
In the open loop multiplex operation, from different coding device (101a, b, MPEG bit stream c...) are imported in this multiplexer (102), and this multiplexer 102 merges to each SPTS (SPTS) in the single MPTS (MPTS).In addition, (summation of each bit rate c...) is higher than the output bit rate of multiplexer (102) for 101a, b to be input to the encoder of this multiplexer (102).This multiplexer (102) is carried out the statistics rate-shaping by the speed that the encoder complexity according to stream reduces different channel.Shown in the title open loop, opposite with previous described closed loop multiplex system, (101a, b c...) do not have other feedback from this multiplexer (102) to this encoder.
(digital signal with the message that is used for ad splicer (104) c...) can receive and merge in the single channel by this multiplexer (102) for 101a, b from this encoder.By (101a, b c...) receive message, and this multiplexer (102) accurately is informed in the access point of the different programs that will carry out the advertisement insertion in the given interval and picks out a little from all encoders.This multiplexer (102) is the information of merga pass message sink in the following manner:
If the advertisement that will insert in concrete program is to encode with a constant bit rate (being defined as DPI_avail speed), and this DPI_avail rate value of predefine, so this multiplexer 102 can be used to this concrete channel allocation to engage-break period section the DPI_avail speed of advertisement, uncorrelated with the encoder complexity of this program.Because this part mpeg stream will be replaced by advertisement, so this will guarantee that aggregate bit rate does not altogether surmount channel bandwidth.This has just been avoided any needs that speed is reduced between the downstream ad joint aging time.This has also simplified the design of downstream ad splicer (104), because it does not need to carry out any rate-shaping.The bit-rates values that is used for advertisement can be provided by this service provider.
If will be inserted into the advertisement of concrete program is with variable bit rate coding, and predefine Maximum Bit Rate value, this multiplexer (102) can be to the Maximum Bit Rate of this concrete this advertisement of channel allocation so, and is uncorrelated with the encoder complexity of this program.
This downstream ad splicer (104) can receive stream from this multiplexer (102) via network (shown in square frame 107).(c...) access point of this advertisement of Cha Ruing and picking out a little can be used message (for example DPI or SCTE-35 message) identification by downstream ad splicer (104) for 101a, b by this encoder.This downstream ad splicer (104) can be inserting this stream from the advertisement of Advertisement Server (shown in square frame 103) retrieval.
By using above-mentioned strategy, this open cycle system guarantees that in case exist downstream ad to insert among one or more in this program, this information is just suitably being incorporated in the process of encoder allocation bit budget by the rate controller in this multiplexer (102).This strategy has been avoided after advertisement is inserted the needs of any changing down have also been avoided inserting for the advertisement of expection the needs of reserved bandwidth, and that can cause underutilization when not having the advertisement insertion.
V. the realization of exemplary method
Fig. 3 has illustrated the exemplary realization of disclosed method.For the current time interval from t to t+T (300), can be integrated in the multiplexer maybe can be the rate controller of a separate equipment, inserts message by this advertisement and is used for access point and the time example (301) that picks out a little from each encoder reception.This method is carried out and is checked, whether receives splice information (302) from all encoders to determine it.If do not receive the splice information from all encoders as yet, then this method turns back to square frame 301.If at square frame 302, receive splice information from all encoders, then this method is transformed into a common time reference (303) with the access/time example of picking out of each encoder, carry out then and check, to determine for the current time interval from t to t+T in the inputting channel whether any joint-interruption (304) being arranged arbitrarily.If in the current time interval of t+T, do not have joint-interruption at t in any inputting channel, this method is that each channel is carried out bit budget (305) based on input video complexity and set output speed so.This method proceeds to the next time interval (309) then.Yet, if having joint-interruption among the inputting channel of current time interval t in the t+T one or more, so for each such channel, this method all to joint-interrupt cycle bit rate be set to predefined DPI_avail rate value (306).Predefined DPI_avail speed can be selected by for example wired operator.The VoD default rate that exemplary DPI_avail speed can be 3.75mbps.Then, this method continues should to gather output speed and is set to equal that this set output speed deducts DPI_avail speed and (307).This method proceeds to square frame 308, and wherein for remaining channel, this method is carried out bit budget based on the set output speed of input video complexity and correction for each channel.Then, this method proceeds to the next time interval (309).
Disclosed method can be utilized many other universal or special computingasystem environment or be configured into line operate.The example that is suitable for use in known computing system, environment and/or the configuration of this system and method includes, but are not limited to, personal computer, server computer, laptop devices and multicomputer system.Additional example comprises set-top box, programmable consumer electronics, network PC, microcomputer, host computer, comprise any one the distributed computing environment (DCE) etc. in said system or the equipment.
This method can be described at the general context of the computer instruction of being carried out by computer (for example program module).Usually, program module comprises routine, program, object, assembly and the data structure etc. of carrying out specific tasks or realizing concrete abstract data type.This system and method also can be carried out in distributed computing environment (DCE), wherein executes the task by the teleprocessing equipment that is connected by communication network.In distributed computing environment (DCE), program module can be arranged in local and remote computer-readable storage medium, comprises memory storage device.
The realization of disclosed method can be stored on the computer-readable medium of certain form or the computer-readable medium transmission by certain form.Computer-readable medium can be any can be by the usable medium of computer access.Unrestricted with way of example, computer-readable medium can comprise " computer-readable storage medium " and " communication media "." computer-readable storage medium " comprises, to be used to store any method or the volatibility of technology realization and non-volatile, the removable and non-removable medium such as the information of computer-readable instruction, data structure, program module or other data.Computer-readable storage medium comprises, but be not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM,, digital multimedia dish (DVD) or other optical storage, cassette, tape, disk storage or other magnetic storage apparatus or other can be used for storing expectation information and can be by the medium of computer access arbitrarily.
Processing to disclosed method can be carried out by component software.Disclosed method can be described in the general context of the computer executable instructions of being carried out by one or more computers or miscellaneous equipment (for example program module).Usually, program module comprises the computer code carrying out specific tasks or realize concrete abstract data type, routine, program, object, assembly, data structure etc.Disclosed method also can be implemented in based on grid and distributed computing environment (DCE), wherein executes the task by the teleprocessing equipment that is connected by communication network.In distributed computing environment (DCE), program module can be arranged in local and remote computer-readable storage medium, comprises memory storage device.
Though described the present invention, and do not meant that the scope of this method and system is limited to the specific embodiments of being set forth, be descriptive and non-limiting in all respects as embodiment herein in conjunction with preferred embodiment and specific embodiment.
Unless other explicit state, otherwise never mean any method of herein setting forth is thought that its step of requirement carries out according to particular order.Therefore, in fact not stating this method step when a claim to a method will perhaps not have the special declaration step will be restricted to a particular order in claims or specification in accordance with an order, and then in office where face never should be inferred order.This all sets up for any possible unexpressed canons of construction, comprising: about the logic theme of step or operating process arrangement; The simple implication that obtains from grammatical organization or punctuation mark; The quantity or the type of the embodiment of in this explanation, describing.
It is apparent to those skilled in the art that under the prerequisite of the scope and spirit that do not break away from these method and systems, can modifications and variations of the present invention are.Consider the explanation and the practice of method and system disclosed herein, other embodiment of these method and systems all is conspicuous for those skilled in the art.It only is exemplary that this explanation and embodiment should be considered to, and the true scope of this method and system and spirit are represented by following claim.
Claims (33)
1. method that is used for the Bit Allocation in Discrete that media signal inserts comprises:
Receive a plurality of medium inputs by a plurality of encoders;
Should a plurality of medium inputs convert a plurality of digital signals to;
By these a plurality of encoders first message is inserted in these a plurality of digital signals at least one, this first message indication media signal access point and media signal pick out a little;
Send second message by these a plurality of encoders to rate controller, this second message is indicated media signal access point and media signal for each digital signal and is picked out a little;
These a plurality of encoders are synchronized to a common time reference, and the media signal access point and the media signal of this digital signal of harmonizing pick out a little; And
According to media signal coding, between media signal access point and media signal pick out a little, to having the media signal access point and picking out a little each digital signal allocation bit rate.
2. method according to claim 1, wherein this media signal is to encode with constant bit rate.
3. method according to claim 2 also comprises:
Reception is used for the predefined bit rate of media signal.
4. method according to claim 3, wherein the bit rate that is distributed is predefined bit rate, the encoder complexity of the program that is inserted with this media signal is uncorrelated.
5. method according to claim 1, wherein this media signal is with variable bit rate coding.
6. method according to claim 5, wherein the bit rate that is distributed is the maximum of this variable bit rate, the encoder complexity of the program that is inserted with this media signal is uncorrelated.
7. method according to claim 1, wherein this medium input is to select from comprise the group of lising down:
The video input; And
The audio frequency input.
8. method according to claim 1, wherein this media signal is to select from comprise the group of lising down:
Advertisement;
Film;
Song;
Video frequency program; And
Audio clips.
9. method that is used for the Bit Allocation in Discrete that media signal inserts comprises:
Receive a plurality of medium inputs by a plurality of encoders;
Should become a plurality of digital signals by a plurality of medium input codings;
By these a plurality of encoders first message is inserted in these a plurality of digital signals at least one, this first message indication media signal access point and media signal pick out a little; And
According to the media signal coding, to each digital signal allocation bit rate with first message.
10. method according to claim 9, wherein this media signal is to encode with constant bit rate.
11. method according to claim 10 also comprises:
Reception is used for the predefined bit rate of media signal.
12. method according to claim 11, wherein the bit rate that is distributed is predefined bit rate, and the encoder complexity of the program that is inserted with this media signal is uncorrelated.
13. method according to claim 9, wherein this media signal is with variable bit rate coding.
14. method according to claim 13, wherein the bit rate that is distributed is the maximum of this variable bit rate, and the encoder complexity of the program that is inserted with this media signal is uncorrelated.
15. method according to claim 9 also comprises:
Send second message by these a plurality of encoders to rate controller, this second message is indicated media signal access point and media signal for each digital signal and is picked out a little;
By this rate controller these a plurality of encoders are synchronized to a common time reference, media signal access point and media signal that adjustment has the digital signal of second message pick out a little.
16. method according to claim 9, wherein this medium input is to select from comprise the group of lising down:
The video input; And
The audio frequency input.
17. method according to claim 9, wherein this media signal is to choose from comprise the group of lising down:
Advertisement;
Film;
Song;
Video frequency program; And
Audio clips.
18. a system that is used for the Bit Allocation in Discrete of media signal insertion comprises:
A plurality of encoders, wherein this encoder is configured, first message that picks out a little with the media signal access point that will indicate media signal and media signal is inserted in the digital signal, and further be configured, arrive rate controller with second transmission of messages that will indicate media signal access point and media signal to pick out a little;
Rate controller, be couple to encoder, be configured to these a plurality of encoders are synchronized to a common time reference, the media signal access point and the media signal of adjustment digital signal pick out a little, and further be configured to encode according to media signal, between this media signal access point and this media signal pick out a little, pick out a little each digital signal allocation bit rate to having media signal access point and media signal.
19. system according to claim 18, wherein this media signal is to encode with constant bit rate.
20. system according to claim 19 also comprises:
Reception is used for the predefined bit rate of media signal.
21. system according to claim 20, wherein the bit rate that is distributed is that the encoder complexity of the program that inserts of predefined bit rate and this media signal is uncorrelated.
22. system according to claim 18, wherein this media signal is with variable bit rate coding.
23. system according to claim 22, wherein the bit rate that is distributed is that the encoder complexity of the program that inserts of the maximum of this variable bit rate and this media signal is uncorrelated.
24. method according to claim 18, wherein this medium input is to select from comprise the group of lising down:
The video input; And
The audio frequency input.
25. system according to claim 18, wherein this media signal is to select from comprise the group of lising down:
Advertisement;
Film;
Song;
Video frequency program; And
Audio clips.
26. a system that is used for the Bit Allocation in Discrete of media signal insertion comprises:
A plurality of encoders, wherein these encoders are configured to the media signal access point of indication media signal and first message that media signal picks out a little are inserted in the digital signal;
Multiplexer is couple to this encoder, is configured to according to this media signal coding, between this media signal access point and media signal pick out a little, to having the media signal access point and picking out a little each digital signal allocation bit rate.
27. system according to claim 26, wherein this media signal is to encode with constant bit rate.
28. system according to claim 27 also comprises:
Reception is used for media signal predetermined with bit rate.
29. system according to claim 28, wherein the bit rate that is distributed is that the encoder complexity of the program that inserts of predefined bit rate and this media signal is uncorrelated.
30. system according to claim 26, wherein this media signal is with variable bit rate coding.
31. system according to claim 30, wherein the bit rate that is distributed is that the encoder complexity of the maximum of this variable bit rate and the program that this media signal is inserted is uncorrelated.
32. system according to claim 26, wherein this medium input is to select from comprise the group of lising down:
The video input; And
The audio frequency input.
33. system according to claim 26, wherein this media signal is to select from comprise the group of lising down:
Advertisement;
Film;
Song;
Video frequency program; And
Audio clips.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70391205P | 2005-07-29 | 2005-07-29 | |
| US60/703,912 | 2005-07-29 | ||
| US11/460,543 | 2006-07-27 |
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| Publication Number | Publication Date |
|---|---|
| CN101375516A true CN101375516A (en) | 2009-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800349270A Pending CN101375516A (en) | 2005-07-29 | 2006-07-28 | Methods and systems for signal insertion |
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| Country | Link |
|---|---|
| CN (1) | CN101375516A (en) |
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