CN106559698A - A kind of data processing method and device - Google Patents
A kind of data processing method and device Download PDFInfo
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- CN106559698A CN106559698A CN201510626560.2A CN201510626560A CN106559698A CN 106559698 A CN106559698 A CN 106559698A CN 201510626560 A CN201510626560 A CN 201510626560A CN 106559698 A CN106559698 A CN 106559698A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4335—Housekeeping operations, e.g. prioritizing content for deletion because of storage space restrictions
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
The invention discloses a kind of data processing method, methods described includes：Program identification (PID) channel data that analyzing atransmission stream (TS) is obtained is read, and determines the traffic identifier of the corresponding TS streams of current PID channel datas；Current PID channel datas are stored to the random access memory ram of the correspondence TS streams according to the traffic identifier that the TS flows.The present invention also discloses a kind of data processing equipment.
Description
Technical field
The present invention relates to digital communication technology field, more particularly to a kind of data processing method and device.
Background technology
Demultiplexing be in DVB (DVB, Digital Video Broadcasting) system can not or
A scarce link, is responsible for parsing the audio stream and video flowing in transport stream complete, and by its point
Indescribably supply audio frequency decoder and Video Decoder.Transport stream (TS, Transport Stream) be by video,
The data such as audio frequency are packaged into the code stream transmitted by transmission bag, are mainly used in program transmission.
(PID, Program ID) information can be identified comprising multi-channel program in the streams of TS all the way, per road PID
Information one program of correspondence, after TS streams resolve to multichannel PID channel data all the way, in addition it is also necessary to many
Road PID channel datas carry out data buffer storage, finally transfer data to terminal by output control again.Assume
There are 5 road TS to flow, the information of 96 PID passages is contained per TS streams all the way, then existing PID passages
Data processing method is as shown in Figure 1.In FIG, for 96 road PID channel datas used 96 with
Machine memorizer (RAM, Random Access Memory) is carrying out data buffer storage, and can so take big
The RAM storage resources of amount, increase very big area, and cost and power consumption also can be very big.
The content of the invention
In view of this, the embodiment of the present invention is expected to provide a kind of data processing method and device, can be very big
RAM resources, reduces cost are saved in degree.
To reach above-mentioned purpose, what the technical scheme of the embodiment of the present invention was realized in：
A kind of data processing method, methods described include：
The program identification PID channel datas that analyzing atransmission stream TS is obtained are read, and determines current PID passages
The traffic identifier of the corresponding TS streams of data；
Current PID channel datas are stored random to correspondence TS stream by the traffic identifier flowed according to the TS
Memory RAM.
Preferably, the traffic identifier for determining the corresponding TS streams of current PID channel datas includes：
Current PID channel datas are parsed, the packet header for obtaining the PID channel datas is carried
Traffic identifier, determine the traffic identifier that the traffic identifier is the packet data corresponding TS streams.
Preferably, the RAM of the correspondence TS streams includes a RAM and the 2nd RAM；
Accordingly, it is described current PID channel datas to be stored to correspondence institute according to the traffic identifier that the TS flows
The RAM for stating TS streams includes：
Current PID channel datas are write into a RAM according to the traffic identifier that the TS flows, described the is determined
The data write in one RAM meet switching condition and the 2nd RAM is space-time, by current PID port numbers
According to the 2nd RAM of write, the data write in determining the 2nd RAM meet switching condition and a RAM
For space-time, current PID channel datas are write into a RAM.
Preferably, methods described also includes：
Data volume when data write is carried out to a RAM, in record write the first RAM；
Data volume when data write is carried out to the 2nd RAM, in record write the 2nd RAM.
Preferably, methods described also includes：
When the data write in determining a RAM meet switching condition, data read request is sent, with
The data write in making a RAM are read；
When the data write in determining the 2nd RAM meet switching condition, data read request is sent, with
The data write in making the 2nd RAM are read.
A kind of data processing equipment, including：Determining module and processing module；
The determining module, for reading the PID channel datas that parsing TS streams are obtained, and determines current PID
The traffic identifier of the corresponding TS streams of channel data；
The processing module, for the traffic identifier that flows according to the TS by current PID channel datas store to
The RAM of the correspondence TS streams.
Preferably, the determining module, specifically for parsing to current PID channel datas, obtains institute
The traffic identifier that the packet header of PID channel datas is carried is stated, determines that the traffic identifier is the number-of-packet
According to the traffic identifier that corresponding TS flows.
Preferably, the RAM of the correspondence TS streams includes a RAM and the 2nd RAM；
Accordingly, current PID is led to by the processing module, the traffic identifier specifically for flowing according to the TS
Track data writes a RAM, and the data write in determining a RAM meet switching condition and second
RAM is space-time, current PID channel datas is write the 2nd RAM, is write in determining the 2nd RAM
The data for entering meet switching condition and a RAM is space-time, and current PID channel datas are write first
RAM。
Preferably, the processing module, is additionally operable to when data write is carried out to a RAM, and record is write
Enter the data volume in a RAM；When data write is carried out to the 2nd RAM, record write is described
Data volume in 2nd RAM.
Preferably, the processing module, the data write in being additionally operable to determine a RAM meet cuts
When changing condition, data read request is sent, so that the data write in a RAM are read；
When the data write in determining the 2nd RAM meet switching condition, data read request is sent, with
The data write in making the 2nd RAM are read.
Data processing method and device that the embodiment of the present invention is provided, read the PID that parsing TS streams are obtained
Channel data, and determine the traffic identifier of the corresponding TS streams of current PID channel datas；Flow according to the TS
Current PID channel datas are stored to the RAM of the correspondence TS streams by traffic identifier；Thus, due to storage
The RAM of PID channel datas no longer determined by PID number of active lanes, but corresponding with TS streams, and then can
RAM resources, reduces cost and power consumption are saved to a great extent.
Description of the drawings
Fig. 1 is PID channel data processing method schematic diagrams in prior art；
Fig. 2 is embodiment of the present invention data processing method schematic flow sheet one；
Fig. 3 is the corresponding relation schematic diagram of embodiment of the present invention TS stream and the RAM for storing the TS flow datas；
Fig. 4 is embodiment of the present invention data processing method schematic flow sheet two；
Fig. 5 is embodiment of the present invention data processing method schematic diagram three；
Fig. 6 is that embodiment of the present invention data processing equipment constitutes structural representation.
Specific embodiment
In embodiments of the present invention, the PID channel datas that parsing TS streams are obtained are read, and determines current PID
The traffic identifier of the corresponding TS streams of channel data；The traffic identifier flowed according to the TS is by current PID channel datas
Store to the RAM of the correspondence TS streams.
Embodiment one
Fig. 2 is embodiment of the present invention data processing method schematic flow sheet one；As shown in Fig. 2 the present invention is real
Applying a data processing method includes：
Step 201：The PID channel datas that parsing TS streams are obtained are read, and determines current PID port numbers
According to the traffic identifier that corresponding TS flows；
Here, the PID channel datas include at least data of PID passages all the way；
The information of at least one program is contained in each TS stream, may per the data in PID passages all the way
Flow from multiple TS, i.e., multiple TS streams are parsed, the data that parsing is obtained are spliced to be formed
The data of multiple programs；To TS stream parsing obtained at least all the way the process of PID channel datas be existing skill
Art, here is omitted.
It is based on the embodiment of the present invention, in actual applications, described to determine the corresponding TS of current PID channel datas
The traffic identifier of stream includes：
Current PID channel datas are parsed, the packet header for obtaining the PID channel datas is carried
Traffic identifier, determine the traffic identifier that the traffic identifier is the packet data corresponding TS streams；
Here, the data of each PID passage are transmitted in the form of packet, i.e., by multiple packets
Composition, the packet header of each packet carries the corresponding TS traffic identifier of the packet data, by packet
Carry out parsing the TS streams that can determine that belonging to the packet data.
Step 202：Current PID channel datas are stored into described to correspondence according to the traffic identifier that the TS flows
The RAM of TS streams；
Here, the RAM of the correspondence TS streams includes a RAM and the 2nd RAM；Namely
Say, be provided with corresponding two RAM to cache the data after parsing the TS streams to each TS stream, such as
Fig. 3 show the corresponding relation schematic diagram of TS streams and the RAM for being used to store the TS flow datas, TS0's
Data correspondence is stored in RAM0 and the data correspondence of RAM1, TS1 is stored in RAM2 and RAM3, according to
This analogizes；In embodiments of the present invention, the size of a RAM and the 2nd RAM can at least store a frame
The data volume of TS streams, the data volume of the frame TS streams can be 188 bytes.
Based on the embodiment of the present invention, in actual applications, the traffic identifier flowed according to the TS will be current
PID channel datas are stored to the RAM of the correspondence TS streams to be included：
Current PID channel datas are write into a RAM according to the traffic identifier that the TS flows, described the is determined
The data write in one RAM meet switching condition and the 2nd RAM is space-time, by current PID port numbers
According to the 2nd RAM of write, the data write in determining the 2nd RAM meet switching condition and a RAM
For space-time, current PID channel datas are write into a RAM；
Wherein, the switching condition is data full a frame, i.e. 188 bytes or writing that current RAM write enters
End-of-packet labelling is run into during data, that is to say, that a RAM in a RAM and the 2nd RAM
When writing data, if the data of write have expired a frame, next frame data will write another RAM；Or,
When to a RAM write data, if running into packet end mark, data are carried out to the RAM no longer
Storage, but switch to another RAM and continue data write.
Based on the embodiment of the present invention, in actual applications, the data write in determining a RAM are full
During sufficient switching condition, data read request is sent, so that the data write in a RAM are read；
When the data write in determining the 2nd RAM meet switching condition, data read request is sent, so that institute
The data write in stating the 2nd RAM are read；In actual applications, system is needed to ensure certain handling up
Rate, i.e., for the data in the streams of TS all the way, the first frame writes a RAM, the second frame write second
When three frames is write, RAM, need to ensure that the data in a RAM have been read, i.e. a RAM by
Empty.
Based on the embodiment of the present invention, in actual applications, set in a RAM and the 2nd RAM respectively
Enumerator is equipped with, the number when data write is carried out to a RAM, in record write the first RAM
According to amount；Data volume when data write is carried out to the 2nd RAM, in record write the 2nd RAM；
Thus, facilitate system to carry out judging whether the data in current RAM read during digital independent finishing；System
Unite when digital independent is carried out using the mechanism for first asking first to respond, when write operation of the system to current RAM
After terminating and sending read request, system just reads data in the RAM and in digital independent according to read request
The RAM is emptied after finishing.
Embodiment two
Fig. 4 is embodiment of the present invention data processing method schematic flow sheet two, and Fig. 5 is embodiment of the present invention number
According to processing method schematic diagram three；As shown in Figure 4,5, embodiment of the present invention data processing method includes：
Step 401：PID channel datas are read, and determines the corresponding TS streams of current PID channel datas
Traffic identifier；
Here, the PID channel datas include at least data of PID passages all the way；In the embodiment of the present invention
In, have 5 road TS streams, respectively TS0 to TS4, to 96 road PID being obtained after 5 road TS stream parsings
Channel data, respectively PID0 channel datas are to PID95 channel datas.
In embodiments of the present invention, the traffic identifier for determining the corresponding TS streams of current PID channel datas,
Including：
Current PID channel datas are parsed, the packet header for obtaining the PID channel datas is carried
Traffic identifier, determine the traffic identifier that the traffic identifier is the packet data corresponding TS streams；
Here, the data of each PID passage are transmitted in the form of packet, i.e., by multiple packets
Composition, after in PID passages are obtained a packet, by parsing the packet, can the data
The TS traffic identifier that the packet header of bag carries, and then determine that the TS belonging to the packet data flows；For example by solution
Analyse the traffic identifier that current PID channel datas obtain and determine that the TS streams belonging to the packet data are TS0.
Step 402：Current PID channel datas are write into the correspondence TS according to the traffic identifier that the TS flows
First RAM of stream, and judge whether presently written data meet switching condition, if met, perform step
Rapid 403, if do not met, execution step 402；
Here, the RAM of the correspondence TS streams includes a RAM and the 2nd RAM；That is,
It is provided with corresponding two RAM to cache to the data after the TS stream parsings, such as Fig. 3 to each TS stream
It show the corresponding relation schematic diagram of TS streams and the RAM for being used to store the TS flow datas, the data of TS0
Correspondence is stored in RAM0 and the data correspondence of RAM1, TS1 is stored in RAM2 and RAM3, according to this class
Push away；In embodiments of the present invention, the size of a RAM and the 2nd RAM can at least store a frame TS
The data volume of stream, the data volume of the frame TS streams can be 188 bytes；If by parsing current PID
Channel data determines that corresponding TS streams are TS0, then the data are write the RAM0 of the correspondence TS0.
Based on the embodiment of the present invention, in actual applications, the switching condition is the number that current RAM write enters
According to full a frame, i.e. 188 bytes, or end-of-packet labelling is run into when data are write in RAM；In the present invention
In embodiment, the switching condition runs into end-of-packet labelling when being and data are write in RAM.
Step 403：Send the first data read request；
Here, first data read request is used to ask to read data in a RAM.
Step 404：Judge whether the 2nd RAM is empty, if sky, execution step 405；Otherwise,
Execution step 404.
Step 405：Current PID channel datas are write into the 2nd RAM of the correspondence TS streams, and is judged
Whether presently written data meet switching condition, if met, execution step 406；Otherwise, perform step
Rapid 405；
In embodiments of the present invention, enumerator is respectively arranged with a RAM and the 2nd RAM,
Data volume when data write is carried out to a RAM, in record write the first RAM；To second
Data volume when RAM carries out data write, in record write the 2nd RAM；Thus, facilitating system
Carry out judging whether the data in current RAM read during digital independent to finish.
Step 406：Send the second data read request；
Here, second data read request is used to ask to read data in the 2nd RAM；In practical application
In, need system to ensure certain throughput, i.e., for the data in the streams of TS all the way, the write of the first frame
First RAM, the second frame write the 2nd RAM, need to ensure the data in a RAM when three frames is write
It is read, i.e., a RAM is cleared.
Step 407：Judge whether a RAM is empty, if sky, execution step 402；Otherwise,
Execution step 407；
In embodiments of the present invention, for the datacycle of same TS streams is stored to a RAM and second
96 RAM resources needed in the art are reduced to 10 RAM resources, very great Cheng by RAM
RAM resources are saved on degree, the effect of area-optimized, reduces cost and power consumption has been reached.
Embodiment three
Fig. 6 is that embodiment of the present invention data processing equipment constitutes structural representation, as shown in fig. 6, of the invention
Embodiment data processing equipment composition includes：Determining module 61 and processing module 62；
The determining module 61, for reading the PID channel datas that parsing TS streams are obtained, and determines current
The traffic identifier of the corresponding TS streams of PID channel datas；
Current PID channel datas are stored by the processing module 62, the traffic identifier for flowing according to the TS
To the RAM of the correspondence TS streams；
Here, the PID channel datas include at least data of PID passages all the way.
Based on the embodiment of the present invention, in actual applications, the determining module 61, specifically for current PID
Channel data is parsed, and obtains the traffic identifier that the packet header of the PID channel datas is carried, it is determined that
The traffic identifier is the traffic identifier of the corresponding TS streams of the packet data；
Here, the data of each PID passage are transmitted in the form of packet, i.e., by multiple packets
Composition, the packet header of each packet carries the corresponding TS traffic identifier of the packet data, by packet
Carry out parsing the TS streams that can determine that belonging to the packet data.
Based on the embodiment of the present invention, in actual applications, the RAM of the correspondence TS streams includes first
RAM and the 2nd RAM；That is, it is right to cache that corresponding two RAM are provided with to each TS stream
Data after the TS stream parsings, are illustrated in figure 3 TS streams and are used to store the RAM of the TS flow datas
Corresponding relation schematic diagram, the data correspondence of TS0 is stored in the data correspondence of RAM0 and RAM1, TS1
RAM2 and RAM3 is stored in, the rest may be inferred；In embodiments of the present invention, a RAM and the 2nd RAM
Size can at least store the data volume of frame TS streams, the data volume of frame TS stream can be 188
Byte；
Accordingly, the processing module 62, specifically for the traffic identifier that flows according to the TS by current PID
Channel data writes a RAM, and the data write in determining a RAM meet switching condition and the
Two RAM are space-time, current PID channel datas are write the 2nd RAM, in determining the 2nd RAM
The data of write meet switching condition and a RAM is space-time, and current PID channel datas are write first
RAM；
Here, the switching condition is data full a frame, i.e. 188 bytes or writing that current RAM write enters
End-of-packet labelling is run into during data, that is to say, that a RAM in a RAM and the 2nd RAM
When writing data, if the data of write have expired a frame, next frame data will write another RAM；Or,
When to a RAM write data, if running into packet end mark, data are carried out to the RAM no longer
Storage, but switch to another RAM and continue data write.
Based on the embodiment of the present invention, in actual applications, the processing module 62, is additionally operable to first
Data volume when RAM carries out data write, in record write the first RAM；To the 2nd RAM
Data volume when carrying out data write, in record write the 2nd RAM；Thus, facilitating system to carry out
Judge whether the data in current RAM read to finish during digital independent；System is when digital independent is carried out
Using the mechanism for first asking first to respond, after system terminates to the write operation of current RAM and sends read request,
System just reads the data in the RAM and the RAM is emptied after digital independent is finished according to read request.
Based on the embodiment of the present invention, in actual applications, the processing module 62, is additionally operable to determine described the
When the data write in one RAM meet switching condition, data read request is sent, so that a RAM
The data of middle write are read；
When the data write in determining the 2nd RAM meet switching condition, data read request is sent, with
The data write in making the 2nd RAM are read；In actual applications, system is needed to ensure certain
Throughput, i.e., for the data in the stream of TS all the way, the first frame writes a RAM, the second frame write the
When three frames is write, two RAM, need to ensure that the data in a RAM have been read, i.e. a RAM is
It is cleared.
In embodiments of the present invention, the determining module 61 and processing module 62 in the data processing equipment is equal
Can be by the central processing unit in terminal or server (CPU, Central Processing Unit) or digital signal
Processor (DSP, Digital Signal Processor), or field programmable gate array (FPGA, Field
Programmable Gate Array), or integrated circuit (ASIC, Application Specific Integrated
Circuit) realize.
The above, only present pre-ferred embodiments are not intended to limit protection scope of the present invention.
Claims (10)
1. a kind of data processing method, it is characterised in that methods described includes：
The program identification PID channel datas that analyzing atransmission stream TS is obtained are read, and determines current PID passages
The traffic identifier of the corresponding TS streams of data；
Current PID channel datas are stored random to correspondence TS stream by the traffic identifier flowed according to the TS
Memory RAM.
2. method according to claim 1, it is characterised in that the current PID channel datas of the determination
The traffic identifier of corresponding TS streams includes：
Current PID channel datas are parsed, the packet header for obtaining the PID channel datas is carried
Traffic identifier, determine the traffic identifier that the traffic identifier is the packet data corresponding TS streams.
3. method according to claim 1 or claim 2, it is characterised in that the RAM of the correspondence TS streams
Including a RAM and the 2nd RAM；
Accordingly, it is described current PID channel datas to be stored to correspondence institute according to the traffic identifier that the TS flows
The RAM for stating TS streams includes：
Current PID channel datas are write into a RAM according to the traffic identifier that the TS flows, described the is determined
The data write in one RAM meet switching condition and the 2nd RAM is space-time, by current PID port numbers
According to the 2nd RAM of write, the data write in determining the 2nd RAM meet switching condition and a RAM
For space-time, current PID channel datas are write into a RAM.
4. method according to claim 3, it is characterised in that methods described also includes：
Data volume when data write is carried out to a RAM, in record write the first RAM；
Data volume when data write is carried out to the 2nd RAM, in record write the 2nd RAM.
5. method according to claim 3, it is characterised in that methods described also includes：
When the data write in determining a RAM meet switching condition, data read request is sent, with
The data write in making a RAM are read；
When the data write in determining the 2nd RAM meet switching condition, data read request is sent, with
The data write in making the 2nd RAM are read.
6. a kind of data processing equipment, it is characterised in that described device includes：Determining module and processing module；
The determining module, for reading the PID channel datas that parsing TS streams are obtained, and determines current PID
The traffic identifier of the corresponding TS streams of channel data；
The processing module, for the traffic identifier that flows according to the TS by current PID channel datas store to
The RAM of the correspondence TS streams.
7. device according to claim 6, it is characterised in that the determining module, specifically for working as
Front PID channel datas are parsed, and obtain the traffic identifier that the packet header of the PID channel datas is carried,
Determine the traffic identifier that the traffic identifier is the corresponding TS streams of the packet data.
8. according to claim 6 or 7 described devices, it is characterised in that the RAM of the correspondence TS streams
Including a RAM and the 2nd RAM；
Accordingly, current PID is led to by the processing module, the traffic identifier specifically for flowing according to the TS
Track data writes a RAM, and the data write in determining a RAM meet switching condition and second
RAM is space-time, current PID channel datas is write the 2nd RAM, is write in determining the 2nd RAM
The data for entering meet switching condition and a RAM is space-time, and current PID channel datas are write first
RAM。
9. device according to claim 8, it is characterised in that the processing module, is additionally operable to
Data volume when one RAM carries out data write, in record write the first RAM；To the 2nd RAM
Data volume when carrying out data write, in record write the 2nd RAM.
10. device according to claim 8, it is characterised in that the processing module, is additionally operable to determine
When the data write in first RAM meet switching condition, data read request is sent, so that described the
The data write in one RAM are read；
When the data write in determining the 2nd RAM meet switching condition, data read request is sent, with
The data write in making the 2nd RAM are read.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510626560.2A CN106559698A (en) | 2015-09-28 | 2015-09-28 | A kind of data processing method and device |
| PCT/CN2016/100684 WO2017054742A1 (en) | 2015-09-28 | 2016-09-28 | Method and apparatus for processing data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510626560.2A CN106559698A (en) | 2015-09-28 | 2015-09-28 | A kind of data processing method and device |
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| CN106559698A true CN106559698A (en) | 2017-04-05 |
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| WO (1) | WO2017054742A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135763A1 (en) * | 2019-12-30 | 2021-07-08 | 深圳市中兴微电子技术有限公司 | Data processing method and apparatus, storage medium, and electronic apparatus |
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