CN102257811B - Mobile terminal multimedia broadcast driving interface and realizing method - Google Patents
Mobile terminal multimedia broadcast driving interface and realizing method Download PDFInfo
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- CN102257811B CN102257811B CN200880132423.1A CN200880132423A CN102257811B CN 102257811 B CN102257811 B CN 102257811B CN 200880132423 A CN200880132423 A CN 200880132423A CN 102257811 B CN102257811 B CN 102257811B
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
Abstract
The present invention discloses a mobile terminal multimedia broadcast driving interface and a realizing method, wherein the driving interface is a logic interface set between a lower read interface and an upper application interface of a terminal, and the logic interface is triggered via the application interface to work at least when the application needs to read the multimedia broadcast data stored in the terminal, and the logic interface is used for separating the payload data and the control information from the multimedia broadcast data read from the read interface, and buffering them to different channels respectively for read by the application via the application interface. The present invention provides an uniform interface for different types of the terminal chips, meanwhile the developing flow is simplified, and the developing period is shorten, thereby the producing cost of a product is reduced.
Description
Technical field
The present invention relates to be applied to the embedded system of portable terminal, relate in particular to mobile terminal multimedia broadcast driving interface and implementation method.
Background technology
China Mobile multimedia broadcasting (CMMB, China Mobile Multimedia Broadcasting) be the mobile multimedia broadcast television technology with independent intellectual property right that SARFT(The State Administration of Radio and Television) promulgates, being mainly used to provides digital audio/video and information service by the radiated television nerve of a covering to various portable terminals; The advantage of CMMB is, can solve admirably the slack problem of portable terminal (mobile TV) signal by satellite communication, CMMB is managed by SARFT(The State Administration of Radio and Television) at present simultaneously, film, TV and broadcast program carrier that it is responsible for have abundant TV programme resource.
In the application program of handheld terminal realization CMMB, need to go to read by the driving interface that calls terminal chip multiplexed frame and part control information, the up application program of giving also needs descending some control informations of chip that write simultaneously, comes the behavior of control chip.
CMMB terminal chip type in the market is many, and solution is not quite similar.For example, in some chips, multiplexed frame and control information are transmitted at same data/address bus; And in the other chip, both are separately transmitted.
Therefore, only be to drive chip such as the driver of fruit chip, the data that receive are not transmitted to upper level applications with not adding any processing, will cause two problems:
The one, for those multiplexed frame and control information are combined in the chip that transmits on the same bus, when writing data (be chip rigidly connect receive that data need to write), need to do corresponding packing to data and process; (when the needs usage data) need to separate data when the application program reading out data, directly increased thus the complexity of program, causes the construction cycle to prolong.
The 2nd, because the chip that exists again multiplexed frame and control information separately to transmit, the uniformity and the versatility that drive interface have been destroyed, cause application program that two cover logics must be arranged, even sometimes need to be for two different editions of two kinds of chip development, this can cause the construction cycle to prolong equally.
This shows, need to improve existing mobile terminal multimedia broadcast driving interface, can unify to be applied to the driving of polytype terminal chip.
Summary of the invention
Technical problem to be solved by this invention provides a kind of mobile terminal multimedia broadcast driving interface and implementation method, can broadcast upper level applications for terminal multi-media the unified interface that is applicable to any type chip is provided.
In order to solve the problems of the technologies described above, the invention provides a kind of mobile terminal multimedia broadcast driving interface implementation method, comprising: logic interfacing of configuration between the application programming interfaces of reading interface and upper strata of the bottom of terminal; When application program needs the multimedia broadcast data of reading terminals storage, to isolate payload data and control information from reading the multimedia broadcast data that interface reads by logic interfacing, and be cached to respectively different passages, treat that application program reads by described application programming interfaces.
Further, this logic interfacing is cached to the payload data passage with the payload data that separates, and the control information that separates is cached to the ascending control information passage.
Further, this logic interfacing also links to each other with the interface of writing of the bottom of terminal, when application program need to be to the terminal write control information, the control information that needs is write by application programming interfaces is cached to the Downlink Control Information passage, then the control information that will read from the Downlink Control Information passage by this logic interfacing is sent to from writing interface on the data/address bus of terminal.
Further, this logic interfacing is carried out separating of payload data and control information according to the agreement of terminal with corresponding multi-media broadcasting system agreement.
Further, the payload data passage in this logic interfacing and ascending control information passage are respectively by creating and safeguarding that a first-in first-out FIFO realizes the first example and second example of row; Perhaps, the Downlink Control Information passage in this logic interfacing is by creating and safeguarding that FIFO realizes the 3rd example of row; Wherein, the payload data passage is used for read-only, and ascending control information passage or Downlink Control Information passage are all for read-write.
Further, FIFO realizes by the first cache list and the second cache list row; The first cache list is used for arranging the just cache blocks in data cached use, and what the second cache list was used for arranging not data cached empty piece or removed data can use piece again;
Before corresponding passage was data cached, initialization the first cache list and the second cache list also were about to the first cache list and are set to sky, and will distribute the cache blocks of some to add one by one the second cache list;
When having data to be cached to corresponding passage, if the second cache list is not empty, then first cache blocks of application carries out data buffer storage in the second cache list, and first cache blocks moved into last of the first cache list, then caching normal termination; If the second cache list is empty, then wait to the second cache list for empty and wait not overtimely, proceed data buffer storage and subsequent operation thereof, if wait the abnormal ending of overtime then caching;
When will be from corresponding passage reading out data, if the first cache list is not empty, then from the first cache list, take out first cache blocks, and after data read, this first cache blocks moved into the second cache list last, then read operation normal termination; If the first cache list is empty, then wait to the first cache list for empty and wait not overtimely, proceed that data read and subsequent operation, if wait overtime then read operation abnormal ending.
In order to solve the problems of the technologies described above, the invention provides a kind of mobile terminal multimedia broadcast driving interface, this driving interface is a logic interfacing that is configured between the application programming interfaces of reading interface and upper strata of bottom of terminal, this logic interfacing is at least when application program needs the multimedia broadcast data of reading terminals storage, by application programming interfaces triggering work, be used for and isolate payload data and control information from reading the multimedia broadcast data that interface reads, and be cached to respectively different passages, treat that application program reads by application programming interfaces.
Further, this logic interfacing comprises read-write distribution module and the data channel module of interconnection, wherein:
The data channel module is used for creating and safeguarding at least payload data passage and ascending control information passage;
The read-write distribution module with read interface and be connected, the payload data that is used for separating is cached to the payload data passage by the data channel module, and the control information that separates is cached to the ascending control information passage by the data channel module, then can read indication to the application programming interfaces return data.
Further, this logic interfacing is also when application program will be to the terminal write control information, by application programming interfaces triggering work;
The data channel module also is used for creating and safeguarding the Downlink Control Information passage;
The read-write distribution module also is connected with the interface of writing of the bottom of terminal, be used for after application program will write terminal by application programming interfaces described control information is cached to the Downlink Control Information passage, the control information that to read from the Downlink Control Information passage by the data channel module, and send to the data/address bus of terminal from writing interface, then, write indication to the application programming interfaces return data.
Further, the payload data passage is used for read-only, and ascending control information passage or Downlink Control Information passage are all be used to reading or writing; Payload data passage, ascending control information passage and Downlink Control Information passage all contain separately the first buffer area and the second buffer area separately, wherein:
The first buffer area, be used for when just being arranged with the one or more cache blocks in data cached use, by the data channel module when receiving data read request from application programming interfaces, read the data of first cache blocks, and these data are carried at the data of returning to application programming interfaces read in the normal response; Simultaneously, this first cache blocks that is read data placed last of the second buffer area of respective channel by the data channel module;
The second buffer area, be used for be arranged with not data cached empty cache blocks or removed data can use cache blocks again the time, by the data channel module from the read-write distribution module when receiving the data buffer storage request, with the data buffer storage that carries in the request at first cache blocks, simultaneously, this first cache blocks of data writing placed last of the first buffer area of respective channel by the data channel module.
Adopt driving interface provided by the invention and method, by multiplexed frame and control information are separated, and by using read-write binary channels technology, can be so that the terminal development personnel only need to develop a cover application program for the mainboard of dissimilar CMMB chips, simultaneously can simplify as much as possible the logic of upper level applications, so simplified development process and shortened the construction cycle.Meanwhile, no longer need on the production line by judging that the mainboard type decides the application version that will download, has reduced production cost thus.
Summary of drawings
Fig. 1 is the structured flowchart of CMMB final drive interface embodiment of the present invention;
Fig. 2 is the flow chart that CMMB final drive interface of the present invention carries out reading and writing data distribution operation;
Fig. 3 is the flow chart that CMMB final drive interface of the present invention carries out data channel initialization, write operation;
Fig. 4 is the flow chart that the present invention carries out the data channel read operation for CMMB end application interface.
Preferred embodiments of the present invention
Mobile terminal multimedia broadcast driving interface provided by the invention and implementation method, its core main points are: add the logic interfacing of a device independent between the application programming interfaces on the read-write operation interface of chip bottom and upper strata, this logic interfacing comprises read-write distribution module, payload data passage and ascending control information passage at least; When application program needs reading out data, to isolate payload data and control information from the multimedia broadcast data stream that interface reads of reading of read-write operation interface by this read-write distribution module, insert respectively payload data passage and ascending control information passage, read for application program.
Below in conjunction with accompanying drawing, and take the CMMB terminal as preferred embodiment, technique scheme of the present invention is at length explained and illustrated.At this, take the CMMB terminal as embodiment, only be for description and interpretation the present invention, rather than in order to limit the present invention.The present invention can be applied in the terminal of various multi-media broadcasting systems.
Fig. 1 has expressed the structured flowchart that CMMB terminal multi-media broadcasting provided by the invention drives interface.As shown in Figure 1, this driving interface is actually the logic interfacing 100 of the device independent that the present invention adds between the application programming interfaces on the read-write operation interface of the chip bottom and upper strata, comprise interconnective read-write distribution module 110 and data channel module 120; Wherein:
The read-write operation interface comprises to be read interface and writes interface, reads interface and be used at least reading the multimedia broadcast data stream that chip receives in terminal memory; Write interface and send to data/address bus for the Downlink Control Information that application program will be write chip at least;
Read-write distribution module 110 also go up respectively with application programming interfaces and is connected, lower with read interface and be connected interface and be connected, for when application program need to read and write data, supply the application program interface call; When application program is wanted read data and is called, will be by reading isolated multiplexed frame payload data and ascending control information in the data flow that interface reads, insert respectively wherein multiplexed frame passage and data feedback channel by data channel module 120, and can read indication to the application programming interfaces return data; When application program will be write data and is called, the Downlink Control Information that will obtain from down going channel by data channel module 120 was sent on the data/address bus from writing interface, and has been write indication to the application programming interfaces return data;
Application programming interfaces, be used for when application program is wanted read data, call read-write distribution module 110, and after receiving that data can read indication, read multiplexed frame payload data and ascending control information from multiplexed frame passage and data feedback channel respectively by data channel module 120; When application program need to be write data, the Downlink Control Information that will write first chip write down going channel, and call the read-write distribution module 110 write Downlink Control Information.
Create and safeguard that a First Input First Output FIFO is to row, then be by creating and safeguarding that FIFO realizes two tabulations of row, the first tabulation is just to arrange the tabulation of the cache blocks in data cached use (used list), the second tabulation be arrange not data cached empty piece or removed data can be again with piece tabulation (unused list).
Before the read-write distribution module was data cached to corresponding passage, at first two tabulations of initialization of data channel module also were about to used list and are set to sky, will distribute the cache blocks of some to add one by one unused list.
When the read-write distribution module will be data cached to corresponding described passage, send the data buffer storage request to the data channel module, and after receiving the normal cache responses that the data channel module is returned, return data can read indication;
Application programming interfaces send data read request to the data channel module after receiving that these data can read indication, and read normal response by the data that the data channel module is returned and obtain corresponding data;
The data channel module is after receiving the data buffer storage request, if it is not empty judging unused list, the data buffer storage that will carry in then will asking is in first cache blocks of unused list, and this first cache blocks moved into last of used list, then return normal cache responses to the read-write distribution module; If it be empty judging unused list, then wait to unused list for sky and wait not overtimely, proceed data buffer storage and subsequent operation thereof, and return normal cache responses; If wait overtime then to the read-write distribution module return unusual cache responses; The read-write distribution module should unusual cache responses pass to application programming interfaces;
The data channel module is when receiving data read request, if it is not empty judging used list, then will be from used list the data that read of first cache blocks be carried at the data of returning to application programming interfaces and read in the normal response, simultaneously, this first cache blocks moved into last of unused list; If it be empty judging used list, then wait to used list for sky and wait not overtimely, proceed that data read and subsequent operation, and return data reads normal response; Overtimely then read exception response to the application programming interfaces return data if wait.
As shown in Figure 2, for the flow chart that mobile terminal multimedia broadcast driving interface of the present invention carries out reading and writing data distribution operation, be when upper level applications need to read and write data, call execution by application programming interfaces, comprise the steps:
210: difference instantiation multiplexed frame passage, control information data feedback channel and control information down going channel;
220: determining whether read operation, is execution in step 230 then, otherwise execution in step 250;
230: call and read interface and read multimedia broadcast data;
240: separate the data that read according to agreement, and multiplexed frame payload, the ascending control information that separates is distributed to respectively multiplexed frame passage and control information data feedback channel, then process ends;
Here agreement for example for the CMMB system, is to explain by the information in the multiplex frame head.Other multi-media broadcasting system also has corresponding protocol expression, and this gives unnecessary details no longer one by one.
250: obtain the Downlink Control Information data that application program will write from down going channel;
260: call and write interface, control information is sent on the data/address bus, then process ends.
Multiplexed frame payload, ascending control information with separating described in the step 240 are distributed to respectively multiplexed frame passage and control information data feedback channel, specifically realize that by initialization shown in Figure 3, write operation flow process this flow process comprises the steps:
301: judging whether this write operation needs initialization, is execution in step 302 then, otherwise execution in step 305;
302: create FIFO to used list and the unused list of row, and used list is set to sky;
303: the cache blocks that distributes is added the list to unused one by one;
304: from unused list, apply for cache blocks;
305: judging that whether unused list is empty, is execution in step 308 then, otherwise execution in step 306;
306: data are write first cache blocks among the unused list, and this first cache blocks moved into last of used list;
307: normal return code is set, and returns;
308: write data process and block, wait for;
309: whether, be then execution in step 310, carry out otherwise return step 305 if judge waiting for overtimely;
310: unusual return code is set, and returns.
When above-mentioned flow process was returned by normal return code, application programming interfaces just carried out reading of multiplexed frame payload data or ascending control information by the flow process of data channel read operation shown in Figure 4, comprise the steps:
401: whether the used list that judges the corresponding data passage is empty, is execution in step 404 then, otherwise execution in step 402;
402: get first cache blocks among the used list, behind the reading out data this first cache blocks moved into last of unused list;
403: normal return code is set, and returns;
404: the read data process blocking, wait for;
405: whether, be then execution in step 406, carry out otherwise return step 401 if judge waiting for overtimely;
406: unusual return code is set, and returns.
In sum, mobile terminal multimedia broadcast driving interface provided by the invention is by being separated multiplexed frame and control information, for dissimilar terminal chips provides unified interface, simultaneously owing to simplify the logic of upper level applications, and simplified development process and shortened the construction cycle.And, reduced production cost owing to the application version that will download for the mainboard type on the production line is unified.
Certainly; the present invention also can have other various embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Industrial applicibility
The present invention can provide for dissimilar terminal chips unified interface, can simplify development process simultaneously and shorten the construction cycle, thus, can reduce the production cost of product.
Claims (4)
1. mobile terminal multimedia broadcast driving interface implementation method, comprise: logic interfacing of configuration between the application programming interfaces of reading interface and upper strata of the bottom of described terminal, the described payload data that described logic interfacing will be separated is cached to the payload data passage, and the described control information that will separate is cached to the ascending control information passage, described logic interfacing also links to each other with the interface of writing of the bottom of described terminal, when described application program need to be to described terminal write control information, the control information that needs is write by described application programming interfaces is cached to the Downlink Control Information passage, then the described control information that will read from described Downlink Control Information passage by described logic interfacing is sent on the data/address bus of described terminal from the described interface of writing; When application program need to read the multimedia broadcast data of described terminal storage, to read the described multimedia broadcast data that interface reads and isolate payload data and control information from described by described logic interfacing, and be cached to respectively different passages, treat that described application program reads by described application programming interfaces; Wherein, the described payload data passage in the described logic interfacing and described ascending control information passage are respectively by creating and safeguarding that a first-in first-out FIFO realizes the first example and second example of row; Perhaps, the described Downlink Control Information passage in the described logic interfacing is by creating and safeguarding that described FIFO realizes the 3rd example of row; Wherein, described payload data passage is used for read-only, and described ascending control information passage or described Downlink Control Information passage are all for read-write.
2. in accordance with the method for claim 1, it is characterized in that described logic interfacing is carried out separating of described payload data and described control information according to the agreement of described terminal with corresponding multi-media broadcasting system agreement.
3. in accordance with the method for claim 1, it is characterized in that described FIFO realizes by the first cache list and the second cache list row; Described the first cache list is used for arranging the just cache blocks in data cached use, and what described the second cache list was used for arranging not data cached empty piece or removed data can use piece again;
Before corresponding described passage was data cached, described the first cache list of initialization and described the second cache list also were about to described the first cache list and are set to sky, and will distribute the cache blocks of some to add one by one described the second cache list;
When having data to be cached to corresponding passage, if described the second cache list is not empty, then first cache blocks of application carries out data buffer storage in described the second cache list, and described first cache blocks moved into last of described the first cache list, then caching normal termination; If described the second cache list is empty, then wait to described the second cache list for empty and wait not overtimely, proceed described data buffer storage and subsequent operation thereof, if wait overtime then described caching abnormal ending;
When will be from corresponding passage reading out data, if described the first cache list is not empty, then from described the first cache list, take out first cache blocks, and after data read, this first cache blocks moved into described the second cache list last, then read operation normal termination; If described the first cache list is empty, then wait to described the first cache list for empty and wait not overtimely, proceed described data to read and subsequent operation, if wait overtime then described read operation abnormal ending.
4. mobile terminal multimedia broadcast driving interface, it is characterized in that, described driving interface is a logic interfacing that is configured between the application programming interfaces of reading interface and upper strata of bottom of described terminal, described logic interfacing comprises read-write distribution module and the data channel module of interconnection, wherein: described data channel module is used for creating and safeguarding at least payload data passage and ascending control information passage; Described read-write distribution module is connected with the described interface of reading, the described payload data that is used for separating is cached to described payload data passage by described data channel module, and the described control information that will separate is cached to described ascending control information passage by described data channel module, then can read indication to described application programming interfaces return data;
Described logic interfacing is at least when application program need to read the multimedia broadcast data of described terminal storage, by described application programming interfaces triggering work, be used for and read the described multimedia broadcast data that interface reads and isolate payload data and control information from described, and be cached to respectively different passages, treat that described application program reads by described application programming interfaces; Described logic interfacing is also when described application program will be to described terminal write control information, by described application programming interfaces triggering work;
Described data channel module also is used for creating and safeguarding the Downlink Control Information passage;
Described read-write distribution module also is connected with the interface of writing of the bottom of described terminal, be used for after described application program will write described terminal by described application programming interfaces described control information is cached to described Downlink Control Information passage, the described control information that to read from described Downlink Control Information passage by described data channel module, and write the data/address bus that interface is sent to described terminal from described, then, write indication to described application programming interfaces return data;
Described payload data passage is used for read-only, and described ascending control information passage or described Downlink Control Information passage are all be used to reading or writing; Described payload data passage, described ascending control information passage and described Downlink Control Information passage all contain separately the first buffer area and the second buffer area separately, wherein:
Described the first buffer area, be used for when just being arranged with the one or more cache blocks in data cached use, by described data channel module when receiving data read request from described application programming interfaces, read the data of first cache blocks, and these data are carried at the described data of returning to described application programming interfaces read in the normal response; Simultaneously, this first cache blocks that is read data placed last of described the second buffer area of respective channel by described data channel module;
Described the second buffer area, be used for be arranged with not data cached empty cache blocks or removed data can use cache blocks again the time, by described data channel module when receiving the data buffer storage request from described read-write distribution module, with the data buffer storage that carries in the described request at first cache blocks, simultaneously, this first cache blocks of data writing placed last of described the first buffer area of respective channel by described data channel module.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2008/073724 WO2010072030A1 (en) | 2008-12-25 | 2008-12-25 | Mobile terminal multimedia broadcast driving interface and realizing method |
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| CN107251005B (en) | 2014-12-08 | 2021-05-25 | 安博科技有限公司 | System and method for content retrieval from remote network area |
| JP2018508067A (en) * | 2015-01-06 | 2018-03-22 | アンブラ テクノロジーズ リミテッドＵｍｂｒａ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｌｔｄ． | System and method for neutral application programming interface |
| CN113285864B (en) | 2015-01-28 | 2022-10-04 | 安博科技有限公司 | System and method for global virtual network |
| EP4293979A3 (en) | 2015-04-07 | 2024-04-17 | Umbra Technologies Ltd. | System and method for virtual interfaces and advanced smart routing in a global virtual network |
| CN116366334A (en) | 2015-06-11 | 2023-06-30 | 安博科技有限公司 | System and method for network tapestry multi-protocol integration |
| US11360945B2 (en) | 2015-12-11 | 2022-06-14 | Umbra Technologies Ltd. | System and method for information slingshot over a network tapestry and granularity of a tick |
| ES2916341T3 (en) | 2016-04-26 | 2022-06-30 | Umbra Tech Ltd | Information Slingshot Powered Data Beacon Pulsers |
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- 2008-12-25 WO PCT/CN2008/073724 patent/WO2010072030A1/en active Application Filing
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| US20010022787A1 (en) * | 2000-02-24 | 2001-09-20 | Mchale David F. | Controller and method for controlling interfacing to a data link |
| US20040193763A1 (en) * | 2003-03-28 | 2004-09-30 | Fujitsu Limited | Inter-bus communication interface device and data security device |
| CN1558674A (en) * | 2004-01-19 | 2004-12-29 | 大唐电信科技股份有限公司光通信分公 | Multimedia terminal |
| CN101075930A (en) * | 2006-05-16 | 2007-11-21 | 汤姆森许可贸易公司 | Network storage device |
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| WO2010072030A1 (en) | 2010-07-01 |
| CN102257811A (en) | 2011-11-23 |
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