CN113613078B - Digital television section data receiving method - Google Patents
Digital television section data receiving method Download PDFInfo
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- CN113613078B CN113613078B CN202110880573.8A CN202110880573A CN113613078B CN 113613078 B CN113613078 B CN 113613078B CN 202110880573 A CN202110880573 A CN 202110880573A CN 113613078 B CN113613078 B CN 113613078B
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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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/454—Content or additional data filtering, e.g. blocking advertisements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
-
- 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
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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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/454—Content or additional data filtering, e.g. blocking advertisements
- H04N21/4545—Input to filtering algorithms, e.g. filtering a region of the image
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The application relates to the technical field of data processing, and provides a method for receiving digital television section data, which aims to realize complex condition filtering by a single filter, and comprises the following steps of: setting a data filtering task between a data applicant and dmux; step B, defining a filtering condition setting protocol; step C, analyzing a filtering condition setting protocol by a data filtering task; step D, data are filtered and stored according to the filtering conditions; and E, notifying the data reading. By adopting the mode, the complex condition filtering of a single filter is realized, and the consumption of hardware resources is reduced.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a method for receiving digital television section data.
Background
With the development of the era, the development of digital televisions has been rapid, from traditional cable set top boxes to IPtv, from ecos systems to android systems, but no matter how they are developed, the digital television protocols followed by them have never been changed, such as ISO13818 protocol and the like. The set-top box needs to acquire the program information in the digital signal according to a preset coding protocol for program playing. And the information of the programs is quick and more, such as EPG, ECM and other information; difficulties are encountered when we want to get a part of our desired information from a very large amount of data: a problem of setting up a filter; if very accurate filter condition setting is carried out, the wanted information can be accurately obtained, but a plurality of filters are required to be arranged, so that the occupation of hardware resources is increased; if the filtering condition is relaxed, the filtering effect is poor, and the data acquirer needs to identify the data again, so that the working efficiency is affected; and when the section data comes in a high density in a short time, the data may be lost due to untimely data acquisition.
The existing digital television set top box acquires data by a data applicant through a filter, set top box hardware performs data filtering according to set filtering conditions, when data meeting the conditions arrives, the dmux sends a message to the data applicant, the data applicant reads the data from the dmux according to the message, and the filtering conditions consist of 16 bytes and corresponding masks. However, the existing filter cannot complete the filtering of complex conditions, such as when the first byte of the filter is not equal to a, the second byte is between a and C, and a certain bit of the third byte must be 1, so that the filtering condition cannot be set for a single filter, and it is common practice to set a wide filter to contain all conditions, and then the data applicant performs data judgment again at the back end after obtaining the data.
Disclosure of Invention
In order to realize complex condition filtering by a single filter, a method for receiving digital television section data is provided.
The invention solves the problems by adopting the following technical scheme:
a receiving method of digital television section data comprises the following steps:
step A, creating a data filtering task: setting a data filtering task between a data applicant and dmux;
step B, defining a filtering condition setting protocol;
step C, analyzing a filtering condition setting protocol by a data filtering task;
step D, data are filtered and stored according to the filtering conditions;
and E, notifying the data reading.
Further, the step B includes:
b1, defining a judging mode: the judging modes comprise four modes which are equal to, unequal to, greater than or equal to and less than;
b2, defining a filtering parameter setting method: the filtering parameter setting method includes a value of 2 bytes, when the judgment mode is equal to or not equal to: the first byte is set to 0, and the second byte is a valid byte; when the judgment mode is equal to or more than: the first byte is a start value and the second byte is an end value;
b3, defining a basic logic judging unit: the basic logic judging unit is as follows: judging the mode and filtering parameters;
b4, defining a setting method of multiple filtering conditions of single byte: the method for setting the multiple filtering conditions of the single byte comprises the steps of byte index, mode number, basic logic judging unit 1, basic logic judging unit 2, … … and basic logic judging unit m, wherein m is the number of the basic logic judging units;
b5, the filtering condition setting protocol specifically comprises the following steps: the number of byte settings+the multiple filtering conditions of byte 1+the multiple filtering conditions of byte 2+the multiple filtering conditions of … … +the multiple filtering conditions of byte n, n being equal to the number of byte settings.
Further, the filtering condition setting protocol further includes a check value, that is, the filtering condition setting protocol specifically includes: the byte set number + multiple filter condition of byte 1+ multiple filter condition of byte 2+ multiple filter condition of … … + multiple filter condition of byte n + check value.
Further, the step C includes:
c1, analyzing by a basic logic judging unit;
c2, analyzing multiple filtering conditions of a single byte;
and C3, filtering condition setting protocol analysis.
Further, the step D specifically includes: when dmux sends a reading message to a data filtering task, the data filtering task immediately reads data from the dmux and stores the data into a buffer space of the dmux; when the buffer space is used up and the data applicant has not read the data, the data filtering task enters a waiting mode, an overlay mode or a multi-buffer space mode.
Further, the waiting mode is: when the buffer space is full, dmux is not needed to read data, the existing buffer space data is kept, and the dmux covers the data which are not read by the data filtering task; the coverage mode is as follows: continuing to read data from the dmux and covering the earliest section data in the buffer space; the multi-buffer spatial mode is: and (3) maintaining the existing buffer space data, applying a new buffer space for data storage, and applying for the buffer space again if the buffer space is full.
Further, the data storage method of the data filtering task comprises the following steps:
d1.1, establishing a read information structure;
d1.2, establishing a write information structure;
d1.3, establishing a buffer space information structure body;
d1.4, establishing a buffer information structure body;
and D1.5, judging and storing the data.
Further, the step D1.5 of data determination and storage specifically includes: the data filtering task reads data from dmux, judges the data content according to a filtering condition setting protocol, stores the data when the data filtering task judges the data content to be beneficial data, and stores the data when the data filtering task needs to store the data:
a. adding start and end marks for the data;
b. data is written.
Further, the step E is to immediately notify or notify the data applicant after reading the last data.
Compared with the prior art, the invention has the following beneficial effects: by redefining the filtering protocol, only one filter needs to be set during data filtering, so that the consumption of hardware resources is greatly reduced; the data applicant only obtains expected data, optimizes the data processing logic of the data applicant, and reduces the development difficulty; the data is effectively buffered through the temporary task, so that the data can be timely acquired by high-density data, and the data omission can not be caused.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
A receiving method of digital television section data comprises the following steps:
step A, creating a data filtering task: setting a data filtering task between a data applicant and dmux, and acquiring required data from the dmux by the data applicant through the data filtering task;
step B, defining a filtering condition setting protocol;
step C, analyzing a filtering condition setting protocol by a data filtering task;
step D, data are filtered and stored according to the filtering conditions;
and E, notifying the data reading.
Specifically, the step B includes:
b1, defining a judging mode: the judging modes include four modes of equal to, unequal to, equal to or greater than and less than, which are respectively represented as 0xaa, 0xbb, 0xcc and 0xdd in the present embodiment.
B2, defining a filtering parameter setting method: the filtering parameter setting method includes a value of 2 bytes, when the judgment mode is equal to or not equal to: the first byte is set to 0, and the second byte is a valid byte; when the judgment mode is equal to or more than: the first byte is the start value and the second byte is the end value.
B3, defining a basic logic judging unit: the basic logic judging unit is as follows: judging the mode and filtering parameters; for example: 0xaa ef indicates that the filtering conditions are: the filtering byte is equal to 0xef, and the byte value in the section data is equal to 0xef, which is the required section data; 0xcc e0 indicates that the section data corresponding bytes from 0x05 to 0xe0 are valid section data.
B4, defining a setting method of multiple filtering conditions of single byte: the method for setting the multiple filtering conditions of the single byte comprises the steps of byte index, mode number, basic logic judging unit 1, basic logic judging unit 2, … … and basic logic judging unit m, wherein m is the number of the basic logic judging units; the byte index represents a 16-byte filter condition index of the section data, namely 0-15; for example: 0x0203aa00efcc05e0bb00a0, indicating that the filtration conditions are: the second filter byte consists of three judgment conditions: equal to 0xef, is among 0x05 to 0xe0, and is not equal to 0xa0.
B5, the filtering condition setting protocol specifically comprises the following steps: the number of byte settings+the multiple filtering conditions of byte 1+the multiple filtering conditions of byte 2+the multiple filtering conditions of … … +the multiple filtering conditions of byte n, n being equal to the number of byte settings.
Further, the filtering condition setting protocol further includes a check value, that is, the filtering condition setting protocol specifically includes: the byte set number + multiple filter condition of byte 1+ multiple filter condition of byte 2+ multiple filter condition of … … + multiple filter condition of byte n + check value. In the method, the crc check value is adopted as the check value, and crc calculation is carried out on the data of multiple filtering conditions from the number of bytes to the number of bytes n by the crc check value, so that the accuracy of the filtering parameters is checked.
The analyzing of the filtering condition setting protocol by the data filtering task in the step C comprises the following steps:
c1, analyzing by a basic logic judging unit: parsing according to the definition of B3, each logical judgment unit has four unsigned short variables (this definition is only an example): equalValue, equalMin, equalMax, unequalValue, assigning the parsed values to the four variables, whose default value is the invalid value 0xffff when the variables are not used; for example: 0xcc05e0, equalvalue=0 xffff; unequalvalue=0 xffff; equalmin=0x05; equalmax=0xe0.
C2, multiple filtering condition analysis of single byte: according to the definition of B4, a single byte filter information structure is defined: the method comprises the steps of including byte indexes, mode numbers, mode information linked lists or mode information arrays; the mode information linked list or the mode information array consists of four variables described in C1.
And C3, analyzing a filtering condition protocol: defining a complete filter condition protocol structure according to the definition of the step B5: the method comprises the steps of setting the number of bytes, and a linked list or an array of filtering information structures of single bytes; the crc check value should be added when included in the definition.
The step D specifically comprises the following steps: when dmux sends a reading message to a data filtering task, the data filtering task immediately reads data from the dmux and stores the data into a buffer space buffer of the dmux; when the buffer space buffer is used up and the data applicant has not read the data, the data filtering task enters a waiting mode, an overlay mode or a multi-buffer space mode, wherein the waiting mode is as follows: when the buffer space buffer is full, the dmux is not needed to read data, the data in the existing buffer space buffer is kept, and the dmux is left to cover the data which are not read by the data filtering task; the coverage mode is as follows: continuously reading data from dmux and covering the earliest section data in the buffer space; the multi-buffer spatial mode is: and (3) maintaining the data in the existing buffer space buffer, applying a new buffer space buffer for data storage, and applying the buffer space buffer again if the buffer space buffer is full. In this embodiment, the data buffer used by the data filtering task adopts a cyclic buffer.
The data storage method of the data filtering task comprises the following steps:
d1.1 build read information structure: read protection semaphore, read pointer, readable data length, data read-out identifier;
d1.2 creates a write information structure: write pointer, writable buffer length;
d1.3, establishing a buffer information structure body: reading an information structure and writing the information structure;
d1.4 build buffer information structure: the buffer number, the current buffer index, the number of full buffers, the full buffer index list, the buffer information structure 1, the buffer information structure 2, and the buffer information structure x, where x is the number of buffer information structures.
D1.5, judging and storing the data: the data filtering task reads the data from dmux and judges by using the content of the complete filtering condition protocol structure body established in the step C3, and if the data filtering task judges that the data is beneficial, the data is stored, and when the data is required to be stored:
a. firstly, adding section start and end marks to the head and the tail of section data, and quickly correcting to a correct pointer position through the marks after the pointer is abnormal;
b. and judging positions of a read pointer and a write pointer by using a corresponding buffer information structure according to the current buffer index, writing section data into the position of the write pointer according to a judging result, and moving the write pointer backwards by a corresponding length after finishing, wherein the corresponding length is the section length plus the length of a start mark and the length of an end mark.
Specifically, when the read-write pointer has no intersection, that is, the write pointer plus the write length do not overlap with the read pointer plus the readable length, the determination of the cyclic buffer pointer is a conventional method, and will not be described herein.
When the read-write pointer has an intersection, i.e. the write pointer plus the write length coincides with the read pointer plus the readable length:
waiting mode: no data is stored, and no next action is performed;
cover mode: calculating the overlapping length, and confirming how many unread section data need to be covered according to the overlapping length; for example: the overlapping length is 200 bytes, but the section length of the overlapping area is 1000 bytes, then the length of the readable pointer needs to be moved backward by 1000 bytes; if the first section length of the overlap area is 100 and the second section length is 200, the length of the readable pointer needs to be shifted backward by 300 bytes;
multiple buffer spatial mode: when one buffer is full, the buffer keeps the data unchanged; the task updates the index of the current buffer area, and updates the number of the full buffer areas and the index list of the full buffer areas; in the mode, when a plurality of buffers are full and a data applicant reads data, the data are sequentially read from the corresponding buffers according to the sequence of the full buffer index list; when the data of the full buffer area is completely read, the task updates the number of the full buffer area and the full buffer area index list, and removes the read buffer area from the full buffer area index list.
Data storage also involves data reading, and operations during data reading are divided into data applicant reading and internal adjustment of the storage area, specifically:
the data applicant reads the section data: according to the current buffer index, the data applicant acquires the read protection signal quantity from the corresponding buffer information structure body, reads the data, sets the data read mark as read, and releases the read protection signal quantity.
Memory area internal adjustment: judging a data read-out mark of the read information structure body by using a corresponding buffer information structure according to the current buffer area pointer, when the data is read out by a data applicant, the data read-out mark is read out at the moment, the task acquires a read protection signal quantity, then updates the read pointer and the readable data length according to specific conditions, moves the read pointer to the corresponding position of the next read data, sets the data read-out mark as unread, and then releases the signal quantity.
And E, immediately notifying or notifying the data applicant after reading the last data. In either mode, after the task receives the first section data, the task immediately notifies the data applicant of the read data, and then the task sends a notification according to the corresponding mode. Immediate notification: every time the task obtains one beneficial section data, a message is sent to inform the data applicant. The data applicant reads the last data and then notifies: i.e. D1.3 c, takes place, the task sends a message informing the data applicant to read the data.
The simple flow of the invention is as follows: the method comprises the steps that the applicant directly obtains data from dmux and changes the obtaining of section data into: when a data applicant applies for section data, a temporary data filtering task is created, the protocol of step B is firstly initiated after the task is created, filtering parameters are analyzed, and a judging condition queue is generated; the data reading request of dmux is changed from being sent to a data applicant to be sent to a task, the task reads section data from the dmux after receiving the message, judges whether the section is beneficial data according to the condition in a judging condition queue, stores the data according to the step D if the section is beneficial data, and informs the data applicant to acquire the data according to the step E. By adopting the mode, only one filter is required to be arranged when data is filtered, so that the consumption of hardware resources is greatly reduced; the data applicant only obtains expected data, optimizes the data processing logic of the data applicant, and reduces the development difficulty; the data is effectively buffered through the temporary task, so that the data can be timely acquired by high-density data, and the data omission can not be caused.
Claims (8)
1. The method for receiving the digital television section data is characterized by comprising the following steps:
step A, creating a data filtering task: setting a data filtering task between a data applicant and dmux;
step B, defining a filtering condition setting protocol;
step C, analyzing a filtering condition setting protocol by a data filtering task;
step D, data are filtered and stored according to the filtering conditions;
step E, data reading notification;
specifically, the step B includes:
b1, defining a judging mode: the judging modes comprise four modes which are equal to, unequal to, greater than or equal to and less than;
b2, defining a filtering parameter setting method: the filtering parameter setting method includes a value of 2 bytes, when the judgment mode is equal to or not equal to: the first byte is set to 0, and the second byte is a valid byte; when the judgment mode is equal to or more than: the first byte is a start value and the second byte is an end value;
b3, defining a basic logic judging unit: the basic logic judging unit is as follows: judging the mode and filtering parameters;
b4, defining a setting method of multiple filtering conditions of single byte: the method for setting the multiple filtering conditions of the single byte comprises the steps of byte index, mode number, basic logic judging unit 1, basic logic judging unit 2, … … and basic logic judging unit m, wherein m is the number of the basic logic judging units;
b5, the filtering condition setting protocol specifically comprises the following steps: the number of byte settings+the multiple filtering conditions of byte 1+the multiple filtering conditions of byte 2+the multiple filtering conditions of … … +the multiple filtering conditions of byte n, n being equal to the number of byte settings.
2. The method for receiving digital television section data according to claim 1, wherein the filtering condition setting protocol further includes a check value, that is, the filtering condition setting protocol specifically includes: the byte set number + multiple filter condition of byte 1+ multiple filter condition of byte 2+ multiple filter condition of … … + multiple filter condition of byte n + check value.
3. The method of claim 1, wherein the step C includes:
c1, analyzing by a basic logic judging unit;
c2, analyzing multiple filtering conditions of a single byte;
and C3, filtering condition setting protocol analysis.
4. The method for receiving digital television section data according to claim 1, wherein the step D specifically comprises: when dmux sends a reading message to a data filtering task, the data filtering task immediately reads data from the dmux and stores the data into a buffer space of the dmux; when the buffer space is used up and the data applicant has not read the data, the data filtering task enters a waiting mode, an overlay mode or a multi-buffer space mode.
5. The method for receiving digital television section data according to claim 4, wherein the waiting mode is: when the buffer space is full, dmux is not needed to read data, the existing buffer space data is kept, and the dmux covers the data which are not read by the data filtering task; the coverage mode is as follows: continuing to read data from the dmux and covering the earliest section data in the buffer space; the multi-buffer spatial mode is: and (3) maintaining the existing buffer space data, applying a new buffer space for data storage, and applying for the buffer space again if the buffer space is full.
6. The method for receiving digital television section data according to claim 5, wherein the data storage method for the data filtering task comprises:
d1.1, establishing a read information structure;
d1.2, establishing a write information structure;
d1.3, establishing a buffer space information structure body;
d1.4, establishing a buffer information structure body;
and D1.5, judging and storing the data.
7. The method of claim 6, wherein the step D1.5 of data determination and storage is specifically: the data filtering task reads data from dmux, judges the data content according to a filtering condition setting protocol, stores the data when the data filtering task judges the data content to be beneficial data, and stores the data when the data filtering task needs to store the data:
a. adding start and end marks for the data;
b. data is written into the buffer space.
8. The method according to any one of claims 1 to 7, wherein the step E is an immediate notification or a notification after the applicant of the data reads the last time.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1516967A (en) * | 2001-06-18 | 2004-07-28 | External memory for PVR | |
| US6885680B1 (en) * | 2000-01-24 | 2005-04-26 | Ati International Srl | Method for synchronizing to a data stream |
| CN1625237A (en) * | 2003-12-03 | 2005-06-08 | 北京中视联数字系统有限公司 | Receiving method of multi-frequency point electronic programme guide information |
| CN1741608A (en) * | 2005-09-14 | 2006-03-01 | 北京东方广视科技有限责任公司 | Method for realizing machine-card separation in digital TV system |
| CN101771803A (en) * | 2008-12-26 | 2010-07-07 | 深圳Tcl新技术有限公司 | Method for receiving electronic program guide data |
| CN101989916A (en) * | 2009-08-04 | 2011-03-23 | 西安交大捷普网络科技有限公司 | Separating multi-stage buffer network content filtering system and method |
| CN102708207A (en) * | 2012-05-23 | 2012-10-03 | 深圳市龙视传媒有限公司 | Method and device for receiving processing data and video server |
| CN110222113A (en) * | 2019-06-20 | 2019-09-10 | 中国人民解放军陆军特种作战学院 | A kind of data extraction process visualization method for early warning |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8719861B2 (en) * | 2006-10-02 | 2014-05-06 | At&T Intellectual Property I, Lp | System and method for distributing dynamic event data in an internet protocol television system |
-
2021
- 2021-08-02 CN CN202110880573.8A patent/CN113613078B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6885680B1 (en) * | 2000-01-24 | 2005-04-26 | Ati International Srl | Method for synchronizing to a data stream |
| CN1516967A (en) * | 2001-06-18 | 2004-07-28 | External memory for PVR | |
| CN1625237A (en) * | 2003-12-03 | 2005-06-08 | 北京中视联数字系统有限公司 | Receiving method of multi-frequency point electronic programme guide information |
| CN1741608A (en) * | 2005-09-14 | 2006-03-01 | 北京东方广视科技有限责任公司 | Method for realizing machine-card separation in digital TV system |
| CN101771803A (en) * | 2008-12-26 | 2010-07-07 | 深圳Tcl新技术有限公司 | Method for receiving electronic program guide data |
| CN101989916A (en) * | 2009-08-04 | 2011-03-23 | 西安交大捷普网络科技有限公司 | Separating multi-stage buffer network content filtering system and method |
| CN102708207A (en) * | 2012-05-23 | 2012-10-03 | 深圳市龙视传媒有限公司 | Method and device for receiving processing data and video server |
| CN110222113A (en) * | 2019-06-20 | 2019-09-10 | 中国人民解放军陆军特种作战学院 | A kind of data extraction process visualization method for early warning |
Non-Patent Citations (1)
| Title |
|---|
| 有线数字电视中EPG信息介绍及其系统的实现;赵宇峰;包杰;;中国有线电视(第13期);全文 * |
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