CN206452488U - Online live broadcast system - Google Patents

Abstract

The utility model embodiment provides a kind of online live broadcast system, including live content harvester, live content managing device, live content transmitting device, live content playing device；Live content harvester is used to carry out live content real time image collection and compresses generation with the different alternative compression images for playing code check；Live content managing device is used to store the compression images with different alternative broadcasting code checks for compressing generation, and access request is carried out to parse the address and the actual play code check that obtain live content playing device, decoding generation decoding image is carried out therefrom to obtain the alternative code check compression image consistent with actual play code check of playing, and decoding image is distributed to by live content transmitting device according to the address of live content playing device；Live content transmitting device is used for live content playing device distribution decoding image；Live content playing device be used for send access request and receive live content transmitting device distribution decoding image play out.

Description

Online live broadcast system

Technical field

The utility model embodiment is related to online direct seeding technique field, more particularly to a kind of online live broadcast system.

Background technology

Multimedia teaching refers in teaching process, according to the characteristics of instructional objective and teaching object, by Instructional Design, Reasonable selection and use Modern Teaching Medium, and with Traditional teaching means organic assembling, whole course of teaching is participated in jointly, with a variety of Media information acts on student, forms rational teaching process structure, the teaching efficiency for being optimal.

With the development of Teaching Technology of Multimedia, during teaching, except being carried out using the blank on conventional meaning Writing is outer, projecting apparatus is also add, on the curtain by live content by projector projects to a soft suspension.Traditional All in teaching process are determined by teacher.Done from live content, instructional strategies, teaching method, teaching procedure even student Exercise be all that teacher prearranges, student can only passively participate in this process, i.e., in infused state.And Interactive learning environment middle school student as multimedia computer can then select according to learning foundation, the learning interest of oneself The content oneself to be learnt, can select to be adapted to the exercise of oneself level, if teaching software is compiled more preferably, even teaching pattern It can also select, such as, individualized instruction pattern can be used, the pattern for consulting to discuss can also be used.That is, student exists There is the possibility being actively engaged in such interactive learning environment, rather than all are all arranged properly by teacher, student can only be by It is dynamic to receive.

But, in Multimedia Teaching, due to the resource-constrained of teacher, and often there is repetition in live content, such as Each teaching point one teacher of configuration of fruit, teaches same live content, cause teaching resource waste and instruction cost compared with Height, it would therefore be highly desirable to a kind of teaching plan, to reduce the cost of teaching.

Utility model content

In view of this, one of technical problem that the utility model embodiment is solved is to provide a kind of online live system System, to overcome drawbacks described above of the prior art.

The utility model embodiment provides a kind of online live broadcast system, and it includes：Live content harvester, it is live in Hold managing device, live content transmitting device, live content playing device；The live content harvester is used for live Content carries out real time image collection and compresses generation with the different alternative compression images for playing code check；The live content management Device is used to store the compression images with different alternative broadcasting code checks for compressing generation, and access request is carried out to parse To the address of the live content playing device and actual play code check, with therefrom obtain the alternative broadcasting code check with it is described The compression image of actual play code check unanimously carries out decoding generation decoding image, and according to the ground of the live content playing device The decoding image is distributed to the live content transmitting device by location；The live content transmitting device is used for described live Content reproduction device distributes the decoding image；The live content playing device is used to send the access request and receives institute The decoding image for stating the distribution of live content transmitting device is played out.

In above technical scheme, the utility model embodiment, by the live content harvester to live Content carry out real time image collection and compress generation with the different alternative compression images for playing code checks；The live content pipe Manage device storage and compress the compression image with different alternative broadcasting code checks of generation, and access request is parsed The address of the live content playing device and actual play code check, therefrom to obtain the alternative broadcasting code check and the reality Border plays the compression image of code check unanimously and carries out decoding generation decoding image, and according to the address of the live content playing device The decoding image is distributed to the live content transmitting device；The live content transmitting device is broadcast to the live content Put device and distribute the decoding image；The live content playing device sends the access request and receives the live content The decoding image of transmitting device distribution is played out, if applicable if online live education, it is to avoid for each religion Learn point and all configure a teacher, can simultaneously realize and live content is played out online, so as to reduce the cost of teaching.Separately Outside further, if large-size screen monitors playback equipment, actual live scene is reappeared due to that can simulate, it is achieved thereby that immersion Teaching efficiency so that student has a real Teaching Experience, and simulation teacher is actually given lessons in classroom.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only It is some embodiments described in the utility model embodiment, for those of ordinary skill in the art, can also be according to this A little accompanying drawings obtain other accompanying drawings.

Fig. 1 is the structural representation of online live broadcast system in the utility model embodiment one；

Fig. 2 is the structural representation of the first mainboard in the utility model embodiment two；

Fig. 3 is the structural representation of online live broadcast system in the utility model embodiment three；

Fig. 4 is the structural representation of online live broadcast system in the utility model example IV；

Fig. 5 is the structural representation of projection arrangement in the utility model embodiment five；

Fig. 6 is the structural representation of reflection edge in reflector layer in the utility model embodiment six；

Fig. 7 is the structural representation of multigroup reflector layer in the utility model embodiment seven；

Fig. 8 is the structural representation of projection arrangement in the utility model embodiment eight；

Fig. 9 is the structural representation of projection arrangement in the utility model embodiment nine；

Figure 10 is the structural representation of reflection edge in reflector layer in the utility model embodiment ten.

Embodiment

In order that those skilled in the art more fully understand the technical scheme in the utility model embodiment, below in conjunction with this Accompanying drawing in utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, and shows So, described embodiment is only a part of embodiment of the utility model embodiment, rather than whole embodiments.Based on this reality The every other embodiment obtained with the embodiment in new embodiment, those of ordinary skill in the art, should all belong to this The scope of utility model embodiment protection.

In the utility model embodiment, realtime graphic is carried out to live content by the live content harvester and adopted Collect and compress generation with the different alternative compression images for playing code check；The live content managing device storage compression generation With the different alternative compression images for playing code check, and access request parse to obtain the live content playing device Address and actual play code check, described alternative play the code check compression consistent with the actual play code check therefrom to obtain Image carries out decoding generation decoding image, and is distributed to the decoding image according to the address of the live content playing device The live content transmitting device；The live content transmitting device is schemed to the live content playing device distribution decoding Picture；The live content playing device sends the access request and receives the solution of the live content transmitting device distribution Code image is played out, if applicable if online live education, it is to avoid for each teaching point one teacher of configuration, can Live content is played out online with realizing simultaneously, so as to reduce the cost of teaching.In addition further, if large-size screen monitors Playback equipment, reappears actual live scene, it is achieved thereby that the teaching efficiency of immersion due to that can simulate so that student has There is real Teaching Experience, simulation teacher is actually given lessons in classroom.

Fig. 1 is the structural representation of online live broadcast system in the utility model embodiment one；As shown in figure 1, the present embodiment In, online live broadcast system includes：Live content harvester 101, live content managing device 102, live content transmitting device 103rd, live content playing device 104；The live content harvester 101 is used to adopt live content progress realtime graphic Collect and compress generation with the different alternative compression images for playing code check；The live content managing device 102, which is used to store, presses Contracting generation has a different alternative compression images for playing code checks, and access request parse and obtains the live content and broadcast Address and the actual play code check of device are put, therefrom to obtain the pressure that alternative broadcasting code check is consistent with the actual play code check Contract drawing picture carries out decoding generation decoding image, and is distributed the decoding image according to the address of the live content playing device To the live content transmitting device 103；The live content transmitting device 103 is used for the live content playing device The 104 distribution decoding images；The live content playing device 104 is used to send the access request and receives the decoding Image is played out.

In the present embodiment, the live content harvester 101 can specifically include：Camera 111, the first mainboard 121, The camera 111 is connected with first mainboard 121, and the camera 111 is used to carry out realtime graphic to live content Collection, and the realtime graphic of collection is sent to first mainboard 121；First mainboard 121 is used for the real-time of collection Image is compressed generation with the different alternative compression images for playing code check.

In the present embodiment, first mainboard 121 is further used for alternatively broadcasting the realtime graphic of collection according to different Put code check and carry out cutting respectively to generate the alternative compression image for playing code check of correspondence, the realtime graphic of collection is cut into smaller Packet, in transmission, increases efficiency of transmission, so that the delay of image is smaller when live content is played again, such as existing skill Art substantially has the delay of 7 seconds from live content harvester 101 to live content playing device 104, and the present embodiment substantially has 3 Or so second delay, time delay substantially reduces.

In the present embodiment, camera is used, and video camera that is non-functional complicated but being not particularly suited for teaching resource recording, ginseng Number modulation is relatively simple, and cost is relatively low.Camera can be digital camera or simulation camera, if digital camera Head, then be converted into data signal by analog video signal, enters to be sent to the first mainboard 121.If simulation camera, simulation is regarded Frequency signal is sent to the first mainboard 121, carries out modulus word conversion by the first mainboard 121, and compressed.Camera can be by CMOS is made, and can also be made up, repeat no more in detail of CCD.Analog video signal or digital video signal pass through string, parallel port Or USB interface passes to the first mainboard 121.

Fig. 2 is the structural representation of the first mainboard in the utility model embodiment two；As shown in Fig. 2 in the present embodiment, the One mainboard 121 includes：Become word length hardware encoding circuit 1211, hybrid circuit 1212, buffer circuit 1213, sample circuit 1214, Discrete cosine conversion circuit 1215, add circuit 1216, the annexation of these circuits each other is as shown in Fig. 2 wherein：

The change word length hardware encoding circuit 1211 is used for effective realtime graphic according to different alternative broadcasting code checks point Not carry out cutting to generate the alternative compression image for playing code check of correspondence.Specifically, in the present embodiment, the change word length hardware is compiled Code circuit 1211 be used for effective realtime graphic according to first it is alternative play code check, second it is alternative play code check, it is the 3rd alternative Play code check and carry out cutting respectively to generate corresponding compression image, the described first alternative code check of playing is set suitable for large-size screen monitors broadcasting Standby (such as 140 cun and on large-size screen monitors TV), the described second alternative code check of playing is applied to PC, and the described 3rd alternative plays code Rate is applied to portable mobile terminal device.Such as first alternative code check of playing can be 8k, and the second alternative code check of playing can be 4k, the 3rd alternative code check of playing is 2k.The structure of above-mentioned change word length hardware encoding circuit can specifically include several semiconductors Device such as triode, several triodes formation shift unit, so as to effective realtime graphic according to different playing request sides Alternative code check of playing carries out cutting to generate the alternative compression image for playing code check of correspondence respectively.

It should be noted that large-size screen monitors playback equipment, PC, portable mobile terminal device are as different playing request sides, it is right Answer first it is alternative play code check, second it is alternative play code check and the 3rd it is alternative play code check can also be identical, referring in particular to broadcasting Put depending on the broadcasting demand of requesting party, repeat no more in detail.

The redundancy that the hybrid circuit is used to carry out the realtime graphic of collection picture frame is handled, and after redundancy processing Added again on picture frame and reset the effective realtime graphic of acquisition after timestamp again.Specifically, hybrid circuit 1212 can pass through Cmos fet pipe is built, and is repeated no more in detail.

Buffer circuit 1213 is used to cache the realtime graphic that camera is gathered, to carry out the delayed system of realtime graphic Count and then avoid playing the interim card of the compression image.In the present embodiment, buffer circuit 1213 can include multiple diodes, three Pole pipe, and electric power generating composition, are repeated no more in detail.

Sample circuit 1214, for handling cutting after realtime graphic sliding-model control, obtain the video of realtime graphic In group, the present embodiment, sample circuit is a kind of circuit for being based on multi valued logic (MVL), by taking four value numerical quantization circuits as an example, electricity Six RTD and HEMT of route are constituted, and six RTD (RTD1~RTD6) are serially connected, HEMT source-drain electrode and wherein three (RTD1, RTD2, RTD3) the voltage VIN that is added in HEMT gate that is in parallel can adjust HEMT source-drain current, also can just adjust Total current in parallel with RTD section HEMT, i.e. RTD1, RTD2, RTD3 effective peak electric current is by the voltage VIN being added in HEMT gate Modulated .RTD4, RTD5 and RTD6 peak point current are not influenceed the whole circuits of to be driven by oscillating clock signal VCLOCK by VIN It is dynamic, with VCLOCK increase, RTD be sequentially completed by the transformation conversion orders of low-resistance conducting state to high resistant OFF state be according to The smaller RTD of peak point current, more first realizes the converted of state in actual circuit application, the choosing of VCLOCK high level Select and require it is to make three in the six RTD transformations completed from low resistance state to high-impedance state.

Discrete cosine conversion circuit 1215, carries out two-dimentional ripple for the video group to the realtime graphic and changes, to pass through The mode of two-dimentional ripple superposition is compressed processing to the realtime graphic after cutting.Specifically, discrete cosine conversion circuit is in structure On can include input store and output storage, the register table of realtime graphic to be processed is needed for buffering, for reality When the processing of image transposition demultiplexer, the first multiplexer, the second multiplexer, the control for controlling scan picture flow Unit, the clock module for producing clock signal, and discrete cosine transform/inverse discrete cosine transform unit, input storage It is device, the first multiplexer, register table, demultiplexer, discrete cosine transform/inverse discrete cosine transform unit, the second multiplexer, defeated Go out memory to be sequentially connected；The discrete cosine transform/inverse discrete cosine transform unit includes register, to the real-time of register Image carry out once and/or difference operation first and difference operation unit, the realtime graphic to register shift after carry out successively Twice and/or difference operation second and difference operation unit, first and difference operation unit, second and difference operation unit input, defeated Go out end with register to be connected, register is also connected with demultiplexer, the second multiplexer respectively.

Add circuit 1216 be used for two-dimentional ripple change after the realtime graphic video group with collection it is described in real time Acquisition plus-minus picture frame is compared in image, to generate the alternative compression image for playing code check of correspondence.In the present embodiment, addition electricity Road can be cascaded carry add circuit (Carry Ripple Adder, CRA), carry jump add circuit (cany skip Adder, CKA), and carry select add circuit (carry select Adder, CSA), the carry look ahead of fair speed add Any one in method circuit (CLA) and Parallel Prefix add circuit (Parallel Prcfix Adder).Above-mentioned add circuit Realize can by multiplexer and correlation switching device constitute, repeat no more in detail.

Fig. 3 is the structural representation of online live broadcast system in the utility model embodiment three；As shown in figure 3, with above-mentioned reality Apply unlike example, the live content managing device 102 includes the second mainboard 112, second mainboard 112, which is used to access, asks Progress is asked to parse the address for obtaining the live content playing device and actual play code check, therefrom to obtain alternative broadcasting code The rate compression image consistent with the actual play code check, and decoding generation decoding image is carried out, and according to the live content The decoding image is distributed to the live content transmitting device by the address of playing device.It is specifically described in the present embodiment Second mainboard 112 is further used for what is distributed there is the described first alternative compression image for playing code check to carry out decoding generation the One decoding image.

In the present embodiment, the live content transmitting device 103 specifically includes router 113, and the router is used for will The decoding image is routed to the live content playing device 104.In order to adapt to large-size screen monitors playback equipment in broadcasting, such as chi It is very little to be at least 140 cun of large-size screen monitors TV, it is to avoid the data volume parsed when playing is relatively large, therefore, by router by institute The the first decoding image for stating the completion decoding of live content managing device is routed to the large-size screen monitors playback equipment, is played by the large-size screen monitors Equipment is directly played out, it is ensured that the fluency of broadcasting.Further, since being large-size screen monitors playback equipment, it can realize as far as possible The equal proportion image player at scene during with recording, i.e., as far as possible reduced the scene for recording live content, so as to provide A kind of experience for simulating true live scene, or for immersion or formula experience is incorporated, add live validity.

Second mainboard is further used for what is distributed there is the described second alternative compression image for playing code check to carry out Decoding generation is with the described second alternative the second decoding image for playing code check, and has the described 3rd alternatively to broadcast to what is distributed The compression image for putting code check carries out decoding generation with the described 3rd alternative the 3rd decoding image for playing code check；The present embodiment In, and be the situation of PC, portable mobile terminal for requesting party, because its actual broadcasting code check is smaller, therefore, described second Decoding image, the 3rd decoding image are transmitted directly to the PC or portable mobile end by wide area network such as internet End is played out, without being distributed using above-mentioned router.

Further, in the present embodiment, be also stored with routing table, the route in the live content managing device 102 Described first decoding image is routed to the large-size screen monitors playback equipment by device according to the routing table.

Further, also it is stored with the live content managing device 102 and distributes strategy, strategy is distributed according to described With the parsing of the access request, the address of the live content playing device, actual play code check, the first decoding image are obtained Distribute the time, with therefrom obtain described first it is alternative play the code check compression image consistent with the actual play code check, and Be transferred to second mainboard and carry out decoding generation first and decode image, and according to the address of the live content playing device with And the first decoding image distributes the time, the described first decoding image is distributed to the live content transmitting device, institute State to distribute strategy and include the described first decoding image and distribute the time.

Fig. 4 is the structural representation of online live broadcast system in the utility model example IV；As shown in figure 4, it includes：Directly Content acquisition device 101, live content transmitting device 103, live content playing device 104 are broadcast, it is unlike the embodiments above It is that the live content managing device 102 is that on a remote server, remote server 102, the remote server are designated as again With the live content harvester 101 by Internet connection, memory, compression generation are provided with the remote server There are the different alternative compression images for playing code checks to be stored in via the internet transmissions on the memory.It is described live It is stored with content management device 102 and distributes strategy, is distributed tactful described in 102 pairs of the live content managing device and described connect Enter the parsing of request, obtain the address of the live content playing device, actual play code check, the first when distributing of image of decoding Between, obtain first and alternatively play the compression image of code check and be transferred to the second mainboard progress decoding first decoding figure of generation Picture, the strategy that distributes distributes the time including the described first decoding image.

Such as, for teaching scene, live content playing device live time point and the time point need directly The content broadcast, which is formulated, distributes strategy, and live content managing device gets this and distributes strategy and it is parsed, so that at that time Between when reaching the time point, first consistent with the actual play code check of the large-size screen monitors playing device alternatively broadcasting code is obtained in real time The compression image of rate is simultaneously transferred to second mainboard and decoded to be played online, especially by the router by One decoding image is routed to the large-size screen monitors playback equipment and played out.Compared with prior art, eliminating teacher needs to log in clothes Business device carries out the cumbersome operating procedures such as authentication, is further provided convenience to online teaching.

For carrying out live online teaching by network school, in each classroom a live content can be set to broadcast Device and router are put, when the progress content of courses is live, the live content playing device carries out pairing work with the router Make.

In the present embodiment, and for PC, portable mobile termianl, live real-time it is not absolutely necessary for, because This, second mainboard to what is distributed there is the described second compression image for alternatively playing code check to carry out decoding generation with described Second alternative the second decoding image for playing code check, and there is the described 3rd alternative compression image for playing code check to what is distributed Decoding generation is carried out with the described 3rd alternative the 3rd decoding image for playing code check；Connect to PC, portable mobile termianl Enter after asking to be parsed, by wide area network internet by described second decode image, as described in the 3rd decoding image transmitting arrive The PC or the portable mobile terminal are played out.

Fig. 5 is the structural representation of projection arrangement in the utility model embodiment five；As shown in figure 5, projection arrangement conduct Large-size screen monitors playing device, the projection arrangement is Orthographic projection device, is specifically included：Light source 114, curtain 124, projecting apparatus 134, it is described Light source 114 and the projecting apparatus 134 are arranged at the front of the curtain 124, and the light source 114 is set on the ceiling, institute State the instrument of projecting apparatus 134 to set on the ground, its projection ray obliquely upward receives the curtain front projection along under Decoding image；The curtain 124 include reflector layer (not shown), the reflector layer be used for by the light source 114 from The light for being injected into curtain surface to obliquely downward is reflected, and the reflector layer makes the reflection light of light source 114 along on tiltedly Side is projected, and injects ceiling direction, and the projecting apparatus 134 is injected into the light on the surface of curtain 124 obliquely upward under Reflection processing is carried out, and the reflector layer makes the reflection light of projecting apparatus 134 tend to in front of the curtain project, so that Uniform light effects are presented in whole curtain 124.

In the present embodiment, the lower edge arrangement of curtain described in the longitudinally mounted reference by location of the projecting apparatus 103 is such as thrown The angle of shadow is projected on curtain 124 from top to bottom, and the longitudinally mounted position of projecting apparatus 103 is using the lower edge of curtain 124 as ginseng Examine, in lengthwise position, apart from 20CM.In various different occasions, the distance can be adjusted flexibly.In the above-described embodiments, throw Shadow instrument 103 uses laser projection, to keep longer working life, because of prolonged work screen intensity will not be caused to become Secretly；Ensure extensive colour gamut, be 2 times or so of the colour gamut of common projector.

Exemplified by being imparted knowledge to students in classroom, multiple light sources 114 are set on the ceiling in classroom, multiple light sources 114 are set Multirow is set to, several light sources are included per a line, same line light source carries out brilliance control, these light by same brightness adjusting switch Source point multirow in the way of incident light is irradiated on to obliquely downward is arranged on mounting surface.Light source 114 described in adjacent lines Between line-spacing be 40-50cm, with the row between light source described in a line 101 away from for 30-40cm.

Fig. 6 is the structural representation of reflection edge in reflector layer in the utility model embodiment six；As shown in fig. 6, each anti- Photosphere includes the first reflective surface 1241 and the first reflective surface 1242, and first reflective surface shines the light source on to obliquely downward The light for injecting to curtain surface reflects upwards, second reflective surface by during the projector projects content from lower to oblique upper The light irradiated carries out reflection processing.

In the present embodiment, the rectangular triangle of monnolithic case of reflector layer, it should be understood that, the entirety of reflector layer Profile can with when other shapes, repeat no more in detail.

Fig. 7 is the structural representation of multigroup reflector layer in the utility model embodiment seven；As shown in fig. 7, the reflector layer Including multiple reflector layers be divided into multigroup such as 3 groups, same reflector layer group includes the multiple reflector layers of specification identical, i.e., same The first reflective surface of all reflector layers and the angle of inclination of the second reflective surface are completely the same in reflector layer group, and come on the whole, Area along the first reflective surface of the reflector layer between curtain from top to bottom reflector layer group successively decreases, and the area of the second reflective surface is passed Increase, the angle of the first reflective surface and horizontal plane reduces, the angle of the second reflective surface and horizontal plane increases.

Basal layer is also set up under the reflector layer in above-mentioned Fig. 4-embodiment illustrated in fig. 7, the basal layer is from top to bottom Including protective layer, diffusion layer, optical waveguide layer, supporting layer, polyurethane coating, tissue layer, the protective layer, diffusion layer, optical waveguide layer, branch Layer, polyurethane coating, tissue layer are supportted through the integral affiliated basal layer of hot pressing, tissue layer is used as basic unit, and supporting layer, polyurethane are applied Layer adds the integral rigidity of reflector layer.In the protective layer, diffusion layer, optical waveguide layer, supporting layer, polyurethane coating, tissue layer, Every layer of thickness is 0.01mm~0.15mm.

Fig. 8 is the structural representation of projection arrangement in the utility model embodiment eight；As shown in figure 8, projection arrangement is the back of the body Projection arrangement, be with above-mentioned Fig. 4 embodiments identical, including：Light source 114, curtain 124, projecting apparatus 134, the light source 114 are set Put the face side in the curtain, the light source 114 is set on the ceiling, and unlike above-mentioned Fig. 4 embodiments, described to throw Shadow instrument 134 is arranged on the rear side of the curtain 124, its projection ray along from upper oliquely downward to the front of curtain 124 Project the decoding image received；The facial surface of curtain 124 is reflector layer, and the reflector layer is used for the light source 114 The light for being irradiated to the front face surface of curtain 124 to obliquely downward on reflexes to the ceiling obliquely upward, with above-described embodiment Unlike, the projecting apparatus 134 is reflected from the lower light for injecting the backside surface of curtain 124 to oblique upper, passes through curtain Light after the refraction of cloth 124 tends to project to the front of curtain 124.

Basal layer is also set up under the present embodiment, the reflector layer, the basal layer includes protective layer, diffusion from top to bottom Layer, optical waveguide layer, the protective layer, diffusion layer, optical waveguide layer are integral through hot pressing.In the protective layer, diffusion layer, optical waveguide layer, The protective layer, the thickness of diffusion layer are 0.01mm~0.15mm, and the thickness of the optical waveguide layer is 0.02mm~0.30mm.

Fig. 9 is the structural representation of projection arrangement in the utility model embodiment nine；As shown in figure 9, different from above-mentioned Fig. 8 , reflector 135 is added, the light that projecting apparatus 134 is launched is projected on curtain 124 by reflection processing, so as to shorten Projector distance, other are recorded identical with Fig. 8 and repeated no more.

Figure 10 is the structural representation of reflection edge in reflector layer in the utility model embodiment ten；As shown in Figure 10, each Reflection edge includes the first reflective surface 1241 and the second plane of refraction 1243, and first reflective surface is by the light source 114 from upper to oblique The light that lower section is irradiated to the surface of curtain 124 reflexes to the ceiling upwards, and second plane of refraction 1243 is by the projection The face side of curtain 124 is come together in after carrying out refraction processing from the lower light irradiated to oblique upper when instrument 134 projects content User within sweep of the eye.

In the present embodiment, the rectangular triangle of monnolithic case of reflector layer, it should be understood that, the entirety of reflector layer Profile can with when other shapes, repeat no more in detail.

Referring to above-mentioned Fig. 7, multiple reflector layers that the reflector layer includes are divided into multigroup such as 2 groups, same reflector layer group Including the multiple reflector layers of specification identical, i.e., the first reflective surface of all reflector layers and the second plane of refraction in same reflector layer group Angle of inclination is completely the same, and comes on the whole, anti-along first of the reflector layer between curtain 124 from top to bottom reflector layer group The area of smooth surface successively decreases, and the area of the second plane of refraction is incremented by, and the angle of the first reflective surface and horizontal plane reduces, the second plane of refraction with The angle increase of horizontal plane.

(set it will be understood by those skilled in the art that the embodiment of the utility model embodiment can be provided as method, device It is standby) or computer program product.Therefore, the utility model embodiment can be implemented using complete hardware embodiment, complete software The form of embodiment in terms of example or combination software and hardware.Moreover, the utility model embodiment can be used one or more The computer-usable storage medium for wherein including computer usable program code (includes but is not limited to magnetic disk storage, CD- ROM, optical memory etc.) on the form of computer program product implemented.

The utility model embodiment is with reference to according to the method for the utility model embodiment, device (equipment) and computer journey The flow chart and/or block diagram of sequence product is described.It should be understood that can be by computer program instructions implementation process figure and/or square frame Each flow and/or square frame in figure and the flow in flow chart and/or block diagram and/or the combination of square frame.This can be provided A little computer program instructions are to all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices Processor to produce a machine so that pass through computer or the finger of the computing device of other programmable data processing devices Order, which is produced, to be used to realize what is specified in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames The device of function.

These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.

Although having been described for the preferred embodiment of the utility model embodiment, those skilled in the art once learn Basic creative concept, then can make other change and modification to these embodiments.So, appended claims are intended to solution It is interpreted as including preferred embodiment and falls into having altered and changing for the utility model scope of embodiments.Obviously, this area Technical staff can carry out the essence of various changes and modification without departing from the utility model embodiment to the utility model embodiment God and scope.So, if these modifications and variations of the utility model embodiment belong to the utility model embodiment right and wanted Ask and its equivalent technologies within the scope of, then the utility model embodiment be also intended to comprising these change and modification including.

Claims (18)

1. a kind of online live broadcast system, it is characterised in that including：It is live content harvester, live content managing device, live Content transmission device, live content playing device；The live content harvester is used to scheme live content in real time As gathering and compressing generation with the different alternative compression images for playing code check；The live content managing device, which is used to store, presses The difference that has of contracting generation alternatively plays the compression images of code check, and access request parse to obtain the live content The address of playing device and actual play code check, therefrom to obtain the alternative broadcasting code check and the actual play code check one The compression image of cause carries out decoding generation decoding image, and is schemed the decoding according to the address of the live content playing device As being distributed to the live content transmitting device；The live content transmitting device is used for the live content playing device point Send out decoding image described；The live content playing device is used to send the access request and receives the live content transmission The decoding image of device distribution is played out.

2. system according to claim 1, it is characterised in that the live content harvester includes：Camera, first Mainboard, the camera is connected with first mainboard, and the camera is used to carry out real time image collection to live content, And the realtime graphic of collection is sent to first mainboard；First mainboard is used to be compressed the realtime graphic of collection Generation is with the different alternative compression images for playing code check.

3. system according to claim 2, it is characterised in that first mainboard is further used for the real-time figure to collection Picture carries out cutting to generate the alternative compression image for playing code check of correspondence respectively according to different alternative broadcasting code checks.

4. system according to claim 3, it is characterised in that change word length hardware encoding electricity is provided with first mainboard Road, the change word length hardware encoding circuit is used to cut the realtime graphic of collection respectively according to different alternative broadcasting code checks Divide to generate the alternative compression image for playing code check of correspondence.

5. system according to claim 4, it is characterised in that hybrid circuit is provided with first mainboard, described mixed The redundancy that conjunction circuit is used to carry out the realtime graphic of collection picture frame is handled, and is added again on the picture frame after redundancy processing The effective realtime graphic of acquisition is reset after upper timestamp again；

The change word length hardware encoding circuit is further used for effective realtime graphic according to different alternative broadcasting code check point Not carry out cutting to generate the alternative compression image for playing code check of correspondence.

6. system according to claim 3, it is characterised in that be additionally provided with buffer circuit on first mainboard, described Buffer circuit is used to cache the realtime graphic that camera is gathered, to carry out the lag statistical of realtime graphic and then avoid broadcasting Put the interim card of the compression image.

7. system according to claim 3, it is characterised in that be additionally provided with sample circuit on first mainboard, be used for Realtime graphic sliding-model control after handling cutting, obtains the video group of realtime graphic.

8. system according to claim 7, it is characterised in that discrete cosine transform electricity is additionally provided with first mainboard Road, carries out two-dimentional ripple for the video group to the realtime graphic and changes, after by way of being superimposed two-dimentional ripple to cutting Realtime graphic is compressed processing.

9. system according to claim 8, it is characterised in that be additionally provided with add circuit on first mainboard, described The video group that add circuit is used for the realtime graphic after being changed to two-dimentional ripple is compared with the realtime graphic gathered Plus-minus picture frame is obtained, to generate the alternative compression image for playing code check of correspondence.

10. system according to claim 1, it is characterised in that the live content managing device is a remote server On, the remote server, by Internet connection, is provided with the live content harvester on the remote server Memory, the compression images that there is difference alternatively to play code check of compression generation are stored in described deposit via the internet transmissions On reservoir.

11. system according to claim 10, it is characterised in that the live content managing device also includes the second master Plate, second mainboard is used to access request parse to obtain the address of the live content playing device and actually broadcast Code check is put, therefrom to obtain the compression image that alternative broadcasting code check is consistent with the actual play code check, and decoding generation is carried out Image is decoded, and the decoding image is distributed to by the live content according to the address of the live content playing device and is transmitted Device.

12. system according to claim 11, it is characterised in that the live content transmitting device includes router, institute Stating router is used to the decoding image being routed to the live content playing device.

13. system according to claim 12, it is characterised in that the compression image includes having the first alternative broadcasting code The compression image of rate, the compression image for compressing image, code check alternatively being played with the 3rd with the second alternative broadcasting code check.

14. system according to claim 13, it is characterised in that second mainboard is further used for having for distributing The described first alternative compression image for playing code check carries out decoding generation first and decodes image, and the router is used for the first solution Code image is routed to large-size screen monitors playback equipment, and the live content playing device includes the large-size screen monitors playback equipment.

15. system according to claim 13, it is characterised in that second mainboard is further used for having for distributing The described second alternative compression image for playing code check carries out decoding generation second and decodes image, and to having of distributing described the The three alternative compression images for playing code check, which carry out decoding generation, has the 3rd decoding image；The second decoding image, described the Three decoding images by wide area network transmission to PC or portable mobile terminal, the live content playing device including the PC or Portable mobile terminal described in person, the actual play code check of the PC is consistent with the described second alternative code check of playing, the portable shifting The actual play code check of dynamic terminal is consistent with the described 3rd alternative broadcasting code check.

16. system according to claim 14, it is characterised in that be also stored with route in the live content managing device Described first decoding image is routed to the large-size screen monitors playback equipment by table, the router according to the routing table.

17. system according to claim 14, it is characterised in that be also stored with and distribute in the live content managing device Strategy, according to the parsing for distributing tactful and described access request, obtains address, the reality of the live content playing device Border plays code check, the first decoding image and distributes the time, is actually broadcast with described with therefrom obtaining the described first alternative code check of playing The compression image of code check unanimously is put, and is transferred to second mainboard and carries out decoding generation the first decoding image, and according to described The address of live content playing device and the first decoding image distribute the time, and the described first decoding image is distributed to The live content transmitting device, the strategy that distributes distributes the time including the described first decoding image.

18. system according to claim 14, it is characterised in that the large-size screen monitors playback equipment is at least 140 including size Very little large-size screen monitors playback equipment.