CN101452426A - Data processing device for decreasing buffer space - Google Patents
Data processing device for decreasing buffer space Download PDFInfo
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- CN101452426A CN101452426A CNA2007101962954A CN200710196295A CN101452426A CN 101452426 A CN101452426 A CN 101452426A CN A2007101962954 A CNA2007101962954 A CN A2007101962954A CN 200710196295 A CN200710196295 A CN 200710196295A CN 101452426 A CN101452426 A CN 101452426A
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Abstract
The invention discloses a multimedia data processing device for reducing the space of buffers, which comprises an access unit and a data processing module. The inside of the access unit is provided with a plurality of buffers. The inside of the data processing module is provided with a processing unit and a real-time buffer, and the processing unit can be used for processing data temporarily stored in the buffers of the access unit and the real-time buffer. The space of the buffers in the access unit can be reduced by the arrangement of the real-time buffer further to reduce the demand of peak bandwidth and improve the efficiency of a system.
Description
Technical field
The present invention relates to the apparatus for processing multimedia data that reduces buffer space about a kind of, particularly about a kind of apparatus for processing multimedia data that reduces the buffer space of direct memory access device in the image system.
Background technology
Please refer to shown in Figure 1, in traditional image system, apparatus for processing multimedia data 10 comprises access unit 11 and processing unit 12, (embodiment can be a direct memory access device (Direct Memory Access to this access unit 11, DMA)) has a plurality of impact damper 111,112 in to 11n, its channel transmission line 1,2 to n via similar number is connected to a bus shared system 90 (share-bus system), and respectively in order to transmit data such as color, brightness, captions, menu, cursor.This processing unit 12 is in order to mix (blending), encoding and decoding (coding/decoding), ratio adjustment (scaling) and to remove staggered processing such as (deinterlacing) at those data.Figure 2 shows that the running synoptic diagram of this impact damper 111, wherein a represents the data volume of temporal data in this impact damper 111.Fig. 2 a is depicted as data volume a and time relation temporary in this impact damper 111, and it represents that this impact damper 111 obtains (curve rising part) after the data, promptly simultaneously transmits these data (curve sloping portion) to the outside.
When this bus shared system 90 during as the input end of this apparatus for processing multimedia data 10, this access unit 11 can be in order to relax the burst type transport property (burst-type transfercharacteristic) on the bus.These impact dampers 111,112 to 11n in this access unit 11 can send the acquisition data bag in regular turn, shown in Fig. 2 b, and this bus shared system 90 acquisition datas certainly.When the output terminal of this apparatus for processing multimedia data 10 is connected to real-time clock 20 (destination (sinker), TV for example) time, this processing unit 12 will be from these impact dampers 111, be sent to this real-time clock 20 behind the synthetic real-time imaging of the data set of 112 to 11n acquisitions, for making this real-time clock 20 can capture complete data, these impact dampers 111 in this access unit 11, temporary data volume a must keep the state of non-NULL (non-empty) at any time in 112 to 11n, so it is enough that the data volume that each impact damper is captured from this bus shared system 90 needs at every turn, that is the data division shown in Fig. 2 b must increase, it represents these impact dampers 111,112 to 11n space must increase, and so could keep in the more data amount.
Opposite, when the input end of this apparatus for processing multimedia data 10 is connected to this real-time clock 20 (source end (source), for example video camera), and its output terminal is connected to this bus shared system 90; For the data that make this real-time clock 20 can continue to transmit, temporary data volume a must remain the state of non-filling up (non-full) at any time in these impact dampers 111,112 to 11n of this access unit 11.Therefore, these impact dampers 111,112 to 11n in this access unit 11 need possess bigger space, keep the non-state that fills up at any time to keep, thereby will significantly increase spike bandwidth demand (Fig. 3).
Please refer to shown in Figure 4, when several these apparatus for processing multimedia data 10 and this real-time clock 20 are connected in a bus 30 simultaneously, one bus arbiter (arbiter) 40 will make in regular turn this apparatus for processing multimedia data 10 in turn acquisition be positioned at a pair of haplotype data rate internal memory 50 (double data rate, DDR) Nei data, this moment is because the time interval lengthening of each apparatus for processing multimedia data 10 acquisition data, therefore in order to make these impact dampers 111 of this access unit 11, data volume a in 112 to 11n keeps non-NULL and the non-state that fills up, these impact dampers 111 in the access unit 11 of this apparatus for processing multimedia data 10,112 to 11n need possess bigger space, could satisfy system bandwidth demand.
For these reasons, because the ability of all bandwidth demands when the usefulness of system is decided by that satisfying all modules opens simultaneously, so the framework of above-mentioned apparatus for processing multimedia data 10 can reduce total system usefulness, it still is necessary further to improve its framework really, could reduce buffer space with effective reduction bandwidth demand, and improve total system usefulness.
Summary of the invention
One object of the present invention is to provide a kind of apparatus for processing multimedia data that reduces buffer space, and it is by adding real-time buffer, to reduce the buffer space of direct memory access device.
Another object of the present invention is to provide a kind of apparatus for processing multimedia data that reduces buffer space, it reduces the spike bandwidth demand by adding real-time buffer, and improves total system usefulness.
For reaching above-mentioned purpose, the apparatus for processing multimedia data of minimizing buffer space of the present invention, it comprises access unit and data processing module.Have a plurality of impact dampers in this access unit.Have processing unit and real-time buffer in this data processing module, processing unit is temporary in the impact damper of this access unit and the data in this real-time buffer in order to processing, can reduce buffer space in this access unit by this real-time buffer, and then reduce spike frequency range demand and promote system effectiveness.
Description of drawings
Fig. 1: the calcspar of traditional image system.
Fig. 2: the running synoptic diagram of the impact damper in the access unit of traditional apparatus for processing multimedia data.
Data volume in the impact damper of Fig. 2 a: Fig. 2 is curve map over time.
The synoptic diagram of the packet during the impact damper acquisition data of Fig. 2 b: Fig. 2.
Fig. 3: the spike bandwidth synoptic diagram of traditional apparatus for processing multimedia data.
Fig. 4: several apparatus for processing multimedia data of tradition are connected in the calcspar of a bus.
Fig. 5: the calcspar of the apparatus for processing multimedia data of the minimizing buffer space of first embodiment of the invention.
Fig. 6: the calcspar of the apparatus for processing multimedia data of the minimizing buffer space of second embodiment of the invention.
Embodiment
Please refer to shown in Figure 5, it discloses the apparatus for processing multimedia data 60 of the minimizing buffer space of first embodiment of the invention, it is in order to handle the data of 90 of a real-time clock 20 ' (realtime device) and bus shared systems, and this real-time clock is a kind of multimedia unit (TV for example, mobile phone, camera, video camera ... etc.), generally speaking, this type of multimedia unit is when inputing or outputing data according to its application, the demand that real-time Transmission is all arranged, that is, the I/O of data need be carried out incessantly with certain speed, the video image of televising is an example of above-mentioned real-time clock input data, and the video camera pick-up image then is an example of above-mentioned real-time clock output data.The input end of this apparatus for processing multimedia data 60 receives one group of data such as color, brightness, captions, menu and cursor from this bus shared system 90, its output terminal is then exported a real time image data to this real-time clock 20 ', a kind of embodiment of this real-time clock 20 ' is a destination (sinker, for example a TV).
Referring again to shown in Figure 5, the apparatus for processing multimedia data 60 of first embodiment of the invention comprises access unit 61 and data processing module 64, and this data processing module 64 comprises processing unit 62 and real-time buffer 63 (realtime buffer).This access unit 61 comprises a plurality of impact damper 611,612 to 61n, its number is determined by required data class, these impact dampers 611,612 to 61n are connected to this bus shared system 90 via the channel transmission line 1,2 to n of a plurality of similar numbers respectively, and it is in order to receive and to keep in the data such as color, brightness, captions, menu and cursor from this bus shared system 90 captured.The processing unit 62 of this data processing module 64 is in order to after mixing these data in this access unit 61 (blending), decoding (decoding), ratio adjustment (scaling) and removing processing such as staggered (deinterlacing), and being converted to a real time image data, to be sent to the real-time buffer 63 of this data processing module 64 temporary, because these data are combined into one the tunnel via this processing unit 62 backs by multichannel, make data volume in this real-time buffer 63 be less than the data volume in this access unit 61.
When running, this access unit 61 sends acquisition and requires to this bus shared system 90, the data of institute desire acquisition via these channel transmission line 1,2 to n temporary in regular turn to these impact dampers 611,612 to 61n, processing unit 62 in this data processing module 64 is after these impact dampers 611,612 are obtained required data to 61n, treated and to deliver to the real-time buffer 63 of this data processing module 64 temporary, this real-time clock 20 ' is then from the required image data of these real-time buffer 63 acquisitions.In the present embodiment, because this real-time clock 20 ' is acquisition data continuously, therefore, this data processing equipment 60 is when data transfer state, data volume in this real-time buffer 63 must remain the state of non-NULL (non-empty) at any time, and owing to be subjected to the isolation of this real-time buffer 63, the data volume in these impact dampers 611,612 to 61n of this access unit 61 then can temporarily be zero; That is this access unit 61 is when these bus shared system 90 acquisition datas, do not need once to capture mass data, so not only can reduce the stand-by period of each impact damper acquisition data, and the space of these impact dampers 611,612 to 61n also can be reduced, and reduce the spike bandwidth demand simultaneously, increase system effectiveness.
Please refer to shown in Figure 6ly, it is the apparatus for processing multimedia data 60 of the minimizing buffer space of second embodiment of the invention, and it is equally in order to handle real-time clock 20 " data of 90 of (realtime device) and bus shared systems.Difference between the present embodiment and first embodiment is that the input end of this apparatus for processing multimedia data 60 is by this real-time clock 20 " receive real time image data; and its output terminal is exported data such as one group of color and brightness to this bus shared system 90; and this real-time clock 20 " a kind of embodiment be a source end (source, for example video camera).
Referring again to shown in Figure 6, the apparatus for processing multimedia data 60 of second embodiment of the invention comprises access unit 61 and data processing module 64 equally, and this data processing module 64 comprises processing unit 62 and real-time buffer 63 equally.This real-time buffer 63 is in order to receive and temporary from this real-time clock 20 " real time image data sent.This processing unit 62 is sent data such as one group of color and brightness after handling in order to the real time image data in this real-time buffer 63 is encoded (coding) and ratio adjustment (scaling) etc.This access unit 61 comprises a plurality of impact damper 611,612 equally to 61n, it is in order to receive and the temporary data of being handled from this processing unit 62, these impact dampers also are connected to this bus shared system 90 via the channel transmission line 1,2 to n of a plurality of similar numbers, and these colors and brightness data are write this bus shared system 90, this moment is because those data are divided into multichannel via this processing unit 62 backs by one the tunnel, makes data volume in this access unit 61 more than the data volume in this real-time buffer 63.
When running, this real-time clock 20 " real time image data is reached this real-time buffer 63 keep in; after this processing unit 62 is then handled this real time image data in this real-time buffer; these impact dampers 611,612 that data such as one group of color and brightness are sent to this access unit 62 are done temporary to 61n; this access unit 61 then sends and writes requirement to this bus shared system 90, the data desiring to write are write this bus shared system 90 in regular turn via these passage connecting lines 1,2 to n.In the present embodiment, because this real-time clock 20 " must send data continuously; therefore; this apparatus for processing multimedia data 60 is when data transfer state; the data volume in this real-time buffer 63 must remain the state of non-filling up (non-full) at any time; and owing to be subjected to the isolation of this real-time buffer 63; these impact dampers 611 of this access unit 61, data volume in 612 to 61n can temporarily be the state that fills up then, that is this access unit 61 is when this bus shared system 90 transmits data, do not need once to transmit mass data, so not only can reduce the stand-by period that each impact damper transmits data, these impact dampers 611,612 to 61n space also can be reduced, and can reduce the spike bandwidth demand simultaneously, increase system effectiveness.
As implied above, because of traditional apparatus for processing multimedia data 10 shown in Figure 1 has the bigger problem of buffer space requirement, so can increase the spike bandwidth demand, and make system effectiveness low.Traditional apparatus for processing multimedia data 10 compared to Fig. 1, the data processing equipment of various embodiments of the present invention (shown in Fig. 5 and 6), by adding real-time buffer 63, it can reduce really and is arranged in access unit 61 each buffer spaces, to reduce the spike bandwidth demand, improve total system usefulness.
Though the present invention discloses with aforementioned preferred embodiments, so it is not in order to qualification the present invention, any those of ordinary skills, without departing from the spirit and scope of the present invention, when doing various changes and modification.Therefore protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (28)
1, a kind of apparatus for processing multimedia data comprises:
Access unit comprises a plurality of impact dampers in order to temporary first data; And
Data processing module is coupled to this access unit, comprises:
Processing unit is in order to handle these first data and to produce second data; And
First impact damper is in order to temporary these second data;
Wherein, this apparatus for processing multimedia data is when data transfer state, and the data volume in this first impact damper is maintained the state of non-NULL.
2, data processing equipment as claimed in claim 1, wherein these first data be color, brightness, captions, menu and cursor data one of them.
3, data processing equipment as claimed in claim 1, wherein these second data are real time image data.
4, data processing equipment as claimed in claim 1, wherein this processing unit mix, decoding, ratio adjustment and remove staggered one of handle.
5, data processing equipment as claimed in claim 1, wherein second data of this first impact damper export real-time clock to.
6, data processing equipment as claimed in claim 5, wherein this real-time clock is a destination.
7, data processing equipment as claimed in claim 1, wherein the data volume of these second data is less than the data volume of these first data.
8, a kind of apparatus for processing multimedia data comprises:
Data processing module comprises:
First impact damper is in order to temporary first data; And
Processing unit is in order to handle these first data and to produce one second data;
Access unit is coupled to this data processing module, and this access unit comprises a plurality of impact dampers in order to temporary these second data;
Wherein, this apparatus for processing multimedia data is when data transfer state, and the data volume in this first impact damper is maintained the non-state that fills up.
9, data processing equipment as claimed in claim 8, wherein these first data are real time image data.
10, data processing equipment as claimed in claim 8, wherein these second data be color and brightness data one of them.
11, data processing equipment as claimed in claim 8, wherein this processing unit system encodes and the ratio adjustment one of is handled.
12, data processing equipment as claimed in claim 8, wherein these first data are by the real-time clock supply.
13, data processing equipment as claimed in claim 12, wherein this real-time clock is the source end.
14, data processing equipment as claimed in claim 8, wherein the data volume of these first data is less than the data volume of these second data.
15, a kind of apparatus for processing multimedia data comprises:
Access unit comprises a plurality of impact dampers in order to temporary first data; And
Data processing module comprises:
Processing unit is in order to handle these first data and to produce second data; And
First impact damper is in order to store this second data;
Wherein, this apparatus for processing multimedia data is exported these second data to multimedia unit.
16, data processing equipment as claimed in claim 15, wherein these first data be color, brightness, captions, menu and cursor data one of them.
17, data processing equipment as claimed in claim 15, wherein these second data are real time image data.
18, data processing equipment as claimed in claim 15, wherein this processing unit mix, decoding, ratio adjustment and remove staggered one of handle.
19, data processing equipment as claimed in claim 15, wherein the data volume of these second data is less than the data volume of these first data.
20, data processing equipment as claimed in claim 19, wherein this multimedia unit is a destination.
21, data processing equipment as claimed in claim 15, wherein this data processing equipment is when data transfer state, and the data volume in this first impact damper is kept and is the state of non-NULL.
22, a kind of apparatus for processing multimedia data comprises:
Data processing module comprises:
First impact damper is in order to temporary first data; And
Processing unit is in order to handle these first data and to produce second data;
Access unit comprises a plurality of impact dampers in order to temporary these second data;
Wherein, this apparatus for processing multimedia data receives this first data by multimedia unit.
23, data processing equipment as claimed in claim 22, wherein these first data are real time image data.
24, data processing equipment as claimed in claim 22, wherein these second data are selected from one of color and brightness data.
25, data processing equipment as claimed in claim 22, wherein this processing unit is encoded and the ratio adjustment one of is handled.
26, data processing equipment as claimed in claim 22, wherein the data volume of these first data is less than the data volume of these second data.
27, data processing equipment as claimed in claim 26, wherein this real-time clock is a source end.
28, data processing equipment as claimed in claim 22, wherein this data processing equipment is when data transfer state, and the data volume in this real-time buffer is maintained the non-state that fills up.
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| CN200710196295A CN101452426B (en) | 2007-12-07 | 2007-12-07 | Data processing device for decreasing buffer space |
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| CN200710196295A CN101452426B (en) | 2007-12-07 | 2007-12-07 | Data processing device for decreasing buffer space |
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| CN101452426A true CN101452426A (en) | 2009-06-10 |
| CN101452426B CN101452426B (en) | 2012-08-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103678196A (en) * | 2013-12-18 | 2014-03-26 | 中国电子科技集团公司第四十一研究所 | Device and method for evaluating performance of infrared image collecting and processing system |
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| US5737547A (en) * | 1995-06-07 | 1998-04-07 | Microunity Systems Engineering, Inc. | System for placing entries of an outstanding processor request into a free pool after the request is accepted by a corresponding peripheral device |
| JP3619079B2 (en) * | 1999-09-30 | 2005-02-09 | 松下電器産業株式会社 | Bitstream buffer and demultiplexer for DVD audio decoding system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103678196A (en) * | 2013-12-18 | 2014-03-26 | 中国电子科技集团公司第四十一研究所 | Device and method for evaluating performance of infrared image collecting and processing system |
| CN103678196B (en) * | 2013-12-18 | 2016-10-05 | 中国电子科技集团公司第四十一研究所 | A kind of infrared image acquisition and processing system capability evaluating device and appraisal procedure |
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