CN104104685A - Method and device for forwarding picture - Google Patents
Method and device for forwarding picture Download PDFInfo
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- CN104104685A CN104104685A CN201410354428.6A CN201410354428A CN104104685A CN 104104685 A CN104104685 A CN 104104685A CN 201410354428 A CN201410354428 A CN 201410354428A CN 104104685 A CN104104685 A CN 104104685A
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Abstract
The invention discloses a method and a device for forwarding a picture. The method comprises the following steps of: acquiring the current network traffic value; acquiring an online display equipment list; determining an instruction sending quantity N according to the current network traffic value and the online display equipment list; sending a picture downloading instruction to N pieces of online display equipment in the online display equipment list, the picture downloading instruction being used for indicating the online display equipment which receives the picture downloading instruction to download the picture. In the embodiment, the instruction sending quantity N is determined according to the current network traffic value and the online display equipment list, the picture downloading instruction is sent to the N pieces of online display equipment in the online display equipment list, and sending for the picture downloading instruction and downloading for the picture of the online display equipment can be dynamically adjusted on the basis of the current network traffic value to avoid the occurrence of network congestion, thus improving the reliability of picture forwarding, and increasing the speed of picture forwarding.
Description
Technical field
The present invention relates to multimedia interactive technical field, relate in particular to a kind of picture retransmission method and device.
Background technology
In teaching and exhibition, conventionally need to carry out picture presentation and forward sharing as presentation device, the teaching of take is example, teacher is giving lessons or during lecture, conventionally teaching notes are uploaded to service controller, service controller is converted into plurality of pictures by processing by these teaching notes, a pictures on the every slip demonstration equipment of teacher, student's presentation device is also downloaded this pictures and is displayed by the instruction of sending on service controller, thereby student can utilize presentation device to watch this pictures, on this pictures, carry out answer, write etc., also can return to teacher by service controller, for teacher, check.
But this method is because presentation device quantity is more, teacher is when sliding next pictures of demonstration, whole presentation devices together Connection Service controller are downloaded this pictures, cannot control and adjust according to network traffics, thereby easily cause moment network congestion, a large amount of packet loss retry, picture to download slowly, degradation problem under network effective rate of utilization.
Summary of the invention
The embodiment of the present invention provides a kind of picture retransmission method and device, for picture being forwarded and controlled according to network traffics, guarantees the normal forwarding of picture, improves picture forwarding speed.
The invention provides a kind of picture retransmission method, for control device, comprise the following steps:
Obtain current network flow value;
Obtain online presentation device list;
According to described current network flow value and online presentation device list, determine instruction quantity forwarded N;
Each N in described online presentation device list online presentation device sends picture download instruction, and described picture download instruction is used to indicate the online presentation device download pictures that receives described picture download instruction.
Preferably, describedly according to described current network flow value and online presentation device list, determine instruction quantity forwarded, comprising:
Current network flow value and default network traffics threshold value are compared;
When described current network flow value is less than network traffics threshold value, according to described current network flow value and online presentation device list, determine instruction quantity forwarded N.
Preferably, described in obtain current network flow value before, described method also comprises:
Receive the picture recognition information that demonstration equipment sends.
Preferably, described in obtain current network flow value, comprising:
According to current network flow value described in default flow acquisition time interval acquiring.
Preferably, described at every turn to N online presentation device transmission picture download instruction, comprising:
According to online presentation device list, put in order and to N online presentation device, send picture download instruction at every turn.
The present invention also provides a kind of picture retransmission method, for online presentation device, comprises the following steps:
Obtain the picture recognition information that demonstration equipment sends;
Receive the picture download instruction that control device is sent;
Download picture corresponding to described picture recognition information;
The image cache of downloading is extremely local.
Preferably, picture corresponding to the described picture recognition information of described download, comprising:
Obtain the pictorial information list of photo current packets of information;
Picture is set and downloads number L, wherein L is greater than 0 integer;
According to described pictorial information list, download L pictures.
Preferably, described in obtain the picture recognition information that demonstration equipment sends, comprising:
When L pictures has been downloaded, obtain the picture recognition information that demonstration equipment sends.
Preferably, described method also comprises:
In downloading the process of picture corresponding to described picture recognition information, while receiving another picture recognition information that demonstration equipment sends, stop downloading picture corresponding to described picture recognition information, start to download described picture corresponding to another picture recognition information.
The present invention also provides a kind of picture retransmission unit, and described device comprises:
Flow acquisition module, for obtaining current network flow value;
List of devices acquisition module, for obtaining online presentation device list;
Quantity forwarded determination module, for determining instruction quantity forwarded N according to described current network flow value and online presentation device list;
Instruction sending module, at every turn, to N online presentation device transmission picture download instruction of described online presentation device list, described picture download instruction is used to indicate the online presentation device download pictures that receives described picture download instruction.
Preferably, described quantity forwarded determination module comprises:
Threshold value comparing unit, for comparing current network flow value and default network traffics threshold value;
Determining unit, for when described current network flow value is less than network traffics threshold value, determines instruction quantity forwarded N according to described current network flow value and online presentation device list.
Preferably, described device also comprises:
Identifying information receiver module, the picture recognition information of sending for receiving demonstration equipment.
Preferably, described flow acquisition module comprises:
Flow acquiring unit, for current network flow value described in the flow acquisition time interval acquiring according to default.
Preferably, described instruction sending module comprises:
Instruction sending unit sends picture download instruction to N online presentation device for putting in order according to online presentation device list at every turn.
The present invention also provides a kind of picture retransmission unit, and described device comprises:
Identifying information acquisition module, the picture recognition information of sending for obtaining demonstration equipment;
Download instruction receiver module, the picture download instruction of sending for receiving control device;
The first picture download module, for downloading picture corresponding to described picture recognition information;
Image cache module, for extremely local by the image cache of downloading.
Preferably, described the first picture download module comprises:
Information list acquiring unit, for obtaining the pictorial information list of photo current packets of information;
Download number setting unit, for picture is set, download number L, wherein L is greater than 0 integer;
Picture download unit, for downloading L pictures according to described pictorial information list.
Described identifying information acquisition module comprises:
Discrimination information acquisition unit, for when described L pictures has been downloaded, obtains the picture recognition information that demonstration equipment sends.
Preferably, described device also comprises:
Second picture download module, for the process downloading picture corresponding to described picture recognition information, while receiving another picture recognition information that demonstration equipment sends, stop downloading picture corresponding to described picture recognition information, start to download described picture corresponding to another picture recognition information.
In the present embodiment, according to current network flow value and online presentation device list, instruction quantity forwarded N is set, to N online presentation device, send picture download instruction at every turn, can dynamically adjust the transmission of picture download instruction and the download of online presentation device picture based on front network flow value, avoid occurring that thereby network congestion improves the reliability that picture forwards, and improved the speed that picture forwards.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in the specification write, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of embodiment of the present invention picture retransmission method;
Fig. 2 is another flow chart of embodiment of the present invention picture retransmission method;
Fig. 3 is the structure chart of embodiment of the present invention picture retransmission unit;
Fig. 4 is another structure chart of embodiment of the present invention picture retransmission unit;
Fig. 5 is the structure chart of embodiment of the present invention picture repeater system.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
The system that picture retransmission method of the present invention adopts comprises demonstration equipment, control device and presentation device, demonstration equipment is for operation and control, picture recognition information is sent to control device, control device is for being transmitted to presentation device by picture recognition information, and according to control of network flow quantity presentation device download pictures, the instruction download pictures of presentation device for sending according to control device.
Referring to Fig. 1, be the flow chart of embodiment of the present invention picture retransmission method, picture retransmission method is for control device, and the method comprises:
Step 101: obtain current network flow value.
Wherein, current network flow value can be the current network flow value of control device, can be also the current network flow value of whole system.Control device can set in advance flow acquisition time interval, such as the time interval be set to 1 second can or 1 minute etc., according to flow acquisition time interval acquiring current network flow value.
Step 102: obtain online presentation device list.
Wherein, the identification marking that comprises whole presentation devices in online presentation device list.
Step 103: determine instruction quantity forwarded N according to current network flow value and online presentation device list.Wherein, N is more than or equal to 0 integer.
Wherein, in control device, according to current network flow value, determine current network residual stream value, obtain one
The flow value of individual presentation device download pictures, by current network residual stream value divided by a presentation device
The flow value of download pictures obtains instruction quantity forwarded N, and instruction quantity forwarded N can be along with current net
Network flow value increases and reduces.
Can set in advance network traffics threshold value.
Wherein, network traffics threshold value is relevant to hardware and the network condition of control device, and those skilled in the art can arrange as required.
Current network flow value and default network traffics threshold value are compared.
When current network flow value is less than network traffics threshold value, according to current network flow value and online presentation device list, determine instruction quantity forwarded N; When current network flow value is more than or equal to network traffics threshold value, do not send picture download instruction.
Step 104: each N in online presentation device list online presentation device sends picture download instruction, and picture download instruction is used to indicate the online presentation device download pictures that receives picture download instruction.
Wherein, can put in order and to N online presentation device, send picture download instruction at every turn according to online presentation device list, for example, in online presentation device list, comprise 3N online presentation device, to the 1st to N online presentation device, send picture download instruction for the first time, to N+1 to 2N, an online presentation device sends picture download instruction for the second time, and to 2N+1 to 3N, an online presentation device sends picture download instruction for the third time.
Before obtaining current network flow value, method also can comprise:
Receive the picture recognition information that demonstration equipment sends.
Wherein, after the picture recognition information that control device is sent at reception demonstration equipment, according to current network flow value, control presentation device download pictures.
In the present embodiment, according to current network flow value and online presentation device list, instruction quantity forwarded N is set, to N online presentation device, send picture download instruction at every turn, can dynamically adjust the transmission of picture download instruction and the download of online presentation device picture based on front network flow value, avoid occurring that thereby network congestion improves the reliability that picture forwards, and improved the speed that picture forwards.
Referring to Fig. 2, be the flow chart of embodiment of the present invention picture retransmission method, picture retransmission method is for presentation device, and the method comprises:
Step 201: obtain the picture recognition information that demonstration equipment sends.
Picture recognition information is the identifying information of picture in pictorial information bag, pictorial information bag is selected by the operating personnel of demonstration equipment, demonstration equipment sends pictorial information bag identifying information and picture recognition information by control device to presentation device, presentation device is according to picture recognition information identification picture, and picture recognition information can be Image ID.
Step 202: receive the picture download instruction that control device is sent.
Step 203: the picture that download pictures identifying information is corresponding.
Wherein, presentation device can obtain the pictorial information list of photo current packets of information, picture is set and downloads number L, and wherein L is greater than 0 integer, according to pictorial information list, downloads L pictures.
Presentation device can, when L pictures has been downloaded, obtain the picture recognition information that demonstration equipment sends.
Step 204: the image cache of downloading is extremely local.
In the present embodiment, presentation device is downloaded picture after receiving picture download instruction, and buffer memory is to local, without again connecting control device, download, facilitate presentation device to call, reduced the consumption of Internet resources, thus the phenomenon of the network congestion of effectively avoiding.
The method also comprises:
In picture process corresponding to download pictures identifying information, while receiving another picture recognition information that demonstration equipment sends, stop the picture that download pictures identifying information is corresponding, start to download picture corresponding to another picture recognition information.
In the present embodiment, downloading task before stopping after the picture recognition information of sending at reception demonstration equipment, and connect picture corresponding to control device download pictures identifying information, make user can obtain up-to-date forwarding picture according to demonstration equipment all the time, thereby reach and synchronize with demonstration equipment, improve the synchronism that picture forwards, avoided insignificant picture to download.
Referring to Fig. 3, be the structure chart of a kind of picture retransmission unit of the embodiment of the present invention, device comprises:
Flow acquisition module 301, for obtaining current network flow value.
List of devices acquisition module 302, for obtaining online presentation device list.
Quantity forwarded arranges module 303, and for determining instruction quantity forwarded N according to current network flow value and online presentation device list, wherein, N is more than or equal to 0 integer.
Instruction sending module 304, at every turn, to N online presentation device transmission picture download instruction of online presentation device list, picture download instruction is used to indicate the online presentation device download pictures that receives picture download instruction.
Preferably, quantity forwarded arranges module and comprises:
Threshold value comparison module, for comparing current network flow value and default network traffics threshold value;
Judge module, for when current network flow value is less than network traffics threshold value, determines instruction quantity forwarded N according to current network flow value and online presentation device list.
Preferably, device also comprises:
Identifying information receiver module, the picture recognition information of sending for receiving demonstration equipment.
Preferably, flow acquisition module comprises:
Flow acquiring unit, for according to default flow acquisition time interval acquiring current network flow value.
Preferably, instruction sending module comprises:
Instruction sending unit sends picture download instruction to N online presentation device for putting in order according to online presentation device list at every turn.
Referring to Fig. 4, be the structure chart of a kind of picture retransmission unit of the embodiment of the present invention, device comprises:
Identifying information acquisition module 401, the picture recognition information of sending for obtaining demonstration equipment.
Download instruction receiver module 402, the picture download instruction of sending for receiving control device.
The first picture download module 403, the picture that download pictures identifying information is corresponding;
Image cache module 404, for extremely local by the image cache of downloading.
Preferably, the first picture download module comprises:
Information list acquiring unit, for obtaining the pictorial information list of photo current packets of information;
Download number setting unit, for picture is set, download number L, wherein L is greater than 0 integer;
Picture download unit, for downloading L pictures according to pictorial information list.
Preferably, identifying information acquisition module comprises:
Discrimination information acquisition unit, for when L pictures has been downloaded, obtains the picture recognition information that demonstration equipment sends.
Preferably, device also comprises:
Second picture download module, for the process at picture corresponding to download pictures identifying information, while receiving another picture recognition information that demonstration equipment sends, stop the picture that download pictures identifying information is corresponding, start to download picture corresponding to another picture recognition information.
It should be noted that: when the picture retransmission unit that above-described embodiment provides is stated function in realization, only the division with above-mentioned functional module is illustrated, in practical application, can above-mentioned functions be distributed and by different functional modules, completed as required, the internal structure of the equipment of being about to is divided into different functional modules, to complete all or part of function described above.In addition, the picture retransmission unit that above-described embodiment provides and picture retransmission method embodiment belong to same design, and its specific implementation process refers to embodiment of the method, repeats no more here.
Referring to Fig. 5, be the structure chart of embodiment of the present invention picture repeater system, as shown in the figure, picture repeater system comprises:
Demonstration equipment 501, control device 502 and presentation device 503, control device 502 comprises picture servers 504, transponder 505 and traffic management device 506, wherein demonstration equipment 501 and presentation device 503 can be for one or more, between demonstration equipment 501, control device 502 and presentation device 503, by wired or wireless, connect.
In use, teacher utilizes demonstration equipment 501 to select a pictorial information bag, from the Image ID list in the picture servers 504 download pictures packets of information of control device 502, demonstration equipment 501 sends the instruction of pictorial information bag to the transponder 505 of control device 502, transponder 505 is transmitted to all presentation devices 503 by the instruction of pictorial information bag, comprises pictorial information bag name and pictorial information bag identifying information etc. in the instruction of pictorial information bag.Presentation device 503 receives after the instruction of pictorial information bag, according in the instruction of pictorial information bag containing pictorial information bag name and pictorial information bag identifying information from the Image ID list in the picture servers 504 download pictures packets of information of control device 502.
Demonstration equipment 501 is downloaded this picture of pictorial information bag show, the transponder 505 to control device 502 sends corresponding the first idsplay order, the ID that has comprised this picture in the first idsplay order simultaneously.The transponder 505 of control device 502 changes the first idsplay order to presentation device 503, in like manner demonstration equipment 501 all can send to the ID of this picture the transponder 505 of control device 502 at every turn from the picture servers 504 of control device 502 is downloaded this picture displaying, and then the transponder 505 of control device 502 is transmitted to presentation device 503.
The flow controller 506 monitoring traffic in network values of control device 502, when current network flow value is less than network traffics threshold value, according to current network flow value and online presentation device list, instruction quantity forwarded N is set, to N online presentation device, sends picture download instruction at every turn.
Presentation device 503 is received after picture download instruction, from the picture servers 504 of control device 502, obtain the Image ID list in pictorial information bag, according to the order of picture, from the picture servers 504 of control device 502, download a pictures and be cached to this locality, the picture download instruction of receiving after a picture download instruction does not respond as again received in downloading process, after downloading, receive again picture download instruction, continue to download in order a pictures below, until this equipment is all cached to this locality by all pictures in bag.
Presentation device 503 is downloaded these figure and shows from the picture servers 504 of control device 502 immediately after can also receiving the ID of this picture, if now downloading other pictures, cancels download, the operation of response demonstration equipment 501.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (18)
1. a picture retransmission method, for control device, is characterized in that, comprises the following steps:
Obtain current network flow value;
Obtain online presentation device list;
According to described current network flow value and online presentation device list, determine instruction quantity forwarded N;
Each N in described online presentation device list online presentation device sends picture download instruction, and described picture download instruction is used to indicate the online presentation device download pictures that receives described picture download instruction.
2. the method for claim 1, is characterized in that, describedly according to described current network flow value and online presentation device list, determines instruction quantity forwarded, comprising:
Current network flow value and default network traffics threshold value are compared;
When described current network flow value is less than network traffics threshold value, according to described current network flow value and online presentation device list, determine instruction quantity forwarded N.
3. the method for claim 1, is characterized in that, described in obtain current network flow value before, described method also comprises:
Receive the picture recognition information that demonstration equipment sends.
4. the method for claim 1, is characterized in that, described in obtain current network flow value, comprising:
According to current network flow value described in default flow acquisition time interval acquiring.
5. the method for claim 1, is characterized in that, described at every turn to N online presentation device transmission picture download instruction, comprising:
According to online presentation device list, put in order and to N online presentation device, send picture download instruction at every turn.
6. a picture retransmission method, for online presentation device, is characterized in that, comprises the following steps:
Obtain the picture recognition information that demonstration equipment sends;
Receive the picture download instruction that control device is sent;
Download picture corresponding to described picture recognition information;
The image cache of downloading is extremely local.
7. method as claimed in claim 6, is characterized in that, picture corresponding to the described picture recognition information of described download, comprising:
Obtain the pictorial information list of photo current packets of information;
Picture is set and downloads number L, wherein L is greater than 0 integer;
According to described pictorial information list, download L pictures.
8. method as claimed in claim 7, is characterized in that, described in obtain the picture recognition information that demonstration equipment sends, comprising:
When L pictures has been downloaded, obtain the picture recognition information that demonstration equipment sends.
9. method as claimed in claim 6, is characterized in that, described method also comprises:
In downloading the process of picture corresponding to described picture recognition information, while receiving another picture recognition information that demonstration equipment sends, stop downloading picture corresponding to described picture recognition information, start to download described picture corresponding to another picture recognition information.
10. a picture retransmission unit, is characterized in that, described device comprises:
Flow acquisition module, for obtaining current network flow value;
List of devices acquisition module, for obtaining online presentation device list;
Quantity forwarded determination module, for determining instruction quantity forwarded N according to described current network flow value and online presentation device list;
Instruction sending module, at every turn, to N online presentation device transmission picture download instruction of described online presentation device list, described picture download instruction is used to indicate the online presentation device download pictures that receives described picture download instruction.
11. picture retransmission units as claimed in claim 10, is characterized in that, described quantity forwarded determination module comprises:
Threshold value comparing unit, for comparing current network flow value and default network traffics threshold value;
Determining unit, for when described current network flow value is less than network traffics threshold value, determines instruction quantity forwarded N according to described current network flow value and online presentation device list.
12. picture retransmission units as claimed in claim 10, is characterized in that, described device also comprises:
Identifying information receiver module, the picture recognition information of sending for receiving demonstration equipment.
13. picture retransmission units as claimed in claim 10, is characterized in that, described flow acquisition module comprises:
Flow acquiring unit, for current network flow value described in the flow acquisition time interval acquiring according to default.
14. picture retransmission units as claimed in claim 10, is characterized in that, described instruction sending module comprises:
Instruction sending unit sends picture download instruction to N online presentation device for putting in order according to online presentation device list at every turn.
15. 1 kinds of picture retransmission units, is characterized in that, described device comprises:
Identifying information acquisition module, the picture recognition information of sending for obtaining demonstration equipment;
Download instruction receiver module, the picture download instruction of sending for receiving control device;
The first picture download module, for downloading picture corresponding to described picture recognition information;
Image cache module, for extremely local by the image cache of downloading.
16. picture retransmission units as claimed in claim 15, is characterized in that, described the first picture download module comprises:
Information list acquiring unit, for obtaining the pictorial information list of photo current packets of information;
Download number setting unit, for picture is set, download number L, wherein L is greater than 0 integer;
Picture download unit, for downloading L pictures according to described pictorial information list.
17. picture retransmission units as claimed in claim 16, is characterized in that, described identifying information acquisition module comprises:
Discrimination information acquisition unit, for when described L pictures has been downloaded, obtains the picture recognition information that demonstration equipment sends.
18. picture retransmission units as claimed in claim 15, is characterized in that, described device also comprises:
Second picture download module, for the process downloading picture corresponding to described picture recognition information, while receiving another picture recognition information that demonstration equipment sends, stop downloading picture corresponding to described picture recognition information, start to download described picture corresponding to another picture recognition information.
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| CN201410354428.6A CN104104685B (en) | 2014-07-23 | 2014-07-23 | A kind of picture retransmission method and device |
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| CN201410354428.6A CN104104685B (en) | 2014-07-23 | 2014-07-23 | A kind of picture retransmission method and device |
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Cited By (1)
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| CN104104685B (en) | 2018-01-02 |
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