CN101621674B

CN101621674B - Processing method of video data and related equipment and system

Info

Publication number: CN101621674B
Application number: CN2009101591262A
Authority: CN
Inventors: 邓安刚; 罗勇; 曹斌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2009-07-09
Filing date: 2009-07-09
Publication date: 2011-07-06
Anticipated expiration: 2029-07-09
Also published as: CN101621674A

Abstract

The invention discloses a processing method of video data. The method comprises the following steps: processing collected video data according to a preset local picture strategy to obtain and store the video data of a local picture; receiving video data of the prior stage; obtaining a row field synchronous signal of the video data of the prior stage; obtaining the video data of the local picture from a start position of the stored video data of the local picture when obtaining the row field synchronous signal; controlling the delay of the video data of the prior stage according to a preset control delay; obtaining video data of the present stage by the Alpha mixing of the video data of the prior stage after delay control and the video data of the local picture; sending the video data of the present stage to a latter stage if the present stage is a middle stage; and sending the video data of the present stage to a display terminal if the present stage is a final stage. The embodiment of the invention also provides related equipment and a system. The technical scheme of the invention can reduce the delay and can decrease the performance cost of the processing equipment.

Description

The processing method of video data and relevant device and system

Technical field

The present invention relates to the video data processing technology field, be specifically related to processing method and the relevant device and the system of video data.

Background technology

At the multimedia era of today, various multimedia equipments as TV, computer, personal gaming machine, digital camera, video camera, video recorder or the like, are applied in our life widely, and the demonstration of the video basic functions that is multimedia equipment.Along with the high speed development of information technology in recent years, people are also more and more abundanter to the demand of information, and to this abundantest the most direct mode of intelligence transmission of video, people's requirement is also more and more higher.

In a lot of occasions, people need watch or browse multi-channel video simultaneously on a display screen, and this just requires display system can show the many pictures of multichannel simultaneously.The many image display systems of present multichannel mainly adopt the scheme of a plurality of treatment facility cascades, show when realizing the many picture of multichannel.With 3 grades of signal processors altogether is example, and the scheme of above-mentioned a plurality of treatment facility cascades comprises:

First order treatment facility is from the first camera receiving video data, video data is deposited in the external memory storage, dwindle or processing and amplifying according to the picture strategy of this locality of presetting picture this video data, obtain local video data, it is the video data of effective sprite of local picture, according to the picture strategy of this locality of presetting the video data of this locality is stored to effective sprite zone of local picture again, and according to the picture strategy of this locality of presetting with the invalid sprite zone of specific data storages to local picture, obtain the video data of local picture, and the video data of local picture is sent to second level treatment facility as the video data of the corresponding levels.Wherein, the picture strategy is used to indicate whether mistake of picture, the sprite distribution mode that picture segmentation becomes, and effective sprite distribution mode, and particular data is the fixed data that presets, as 0.

Second level treatment facility is from the second camera receiving video data, video data is deposited in to external memory storage, and the picture of this video data is dwindled or processing and amplifying obtains local video data, the i.e. video data of effective sprite of local picture according to the picture strategy of this locality of presetting.And, second level treatment facility receives the video data of the first order, the capable field sync signal of the video data of the synchronous detecting first order, when getting access to capable field sync signal, the original position of video data from external memory storage of the first order begun to deposit in external memory storage, obtain partial video data so that effective sprite of first order picture and local picture spliced to handle.The process of effective sprite of first order picture and local picture being spliced processing comprises: according to the picture strategy of this locality of presetting, the video data of corresponding sprite carries out α and mixes in the video data with the video data of this locality and the first order, again α is mixed the video data that obtains and store back sprite corresponding in the video data of the first order, to realize splicing processing effective sprite of first order picture and local picture.At last, second level treatment facility sends to third level treatment facility with partial video data.

Third level treatment facility is from the 3rd camera receiving video data, video data is deposited in to external memory storage, and the picture of this video data is dwindled or processing and amplifying obtains local video data, the i.e. video data of effective sprite of local picture according to the picture strategy of this locality of presetting.And, third level treatment facility receives partial video data, the capable field sync signal of the partial video data of synchronous detecting, when getting access to capable field sync signal, the original position of partial video data from external memory storage begun to deposit in external memory storage, so that effective sprite of second level picture and local picture is spliced the video data that processing obtains the third level.The process of effective sprite of second level picture and local picture being spliced processing comprises: according to the picture strategy of this locality of presetting, the video data of sprite corresponding in the video data of this locality and the partial video data is carried out α to be mixed, again α is mixed the video data that obtains and store back sprite corresponding in the partial video data, to realize splicing processing effective sprite of second level picture and local picture.At last, third level treatment facility is to the video data of the display terminal transmission third level, to show the many pictures of multichannel simultaneously on display terminal.

In research and practice process to technique scheme, the present inventor finds, the second level in the system is to the afterbody treatment facility, because need be when the capable field sync signal of the video data that gets access to previous stage, the original position of video data from external memory storage of previous stage begun to deposit in this external memory storage, so that realization is handled the splicing of effective sprite of previous stage picture and local picture, make this technical scheme except preserving from the video data of camera reception, also to preserve the video data of previous stage, therefore exist to postpone bigger shortcoming; And, the video data of corresponding sprite carries out after α mixes in the video data with the video data of this locality and previous stage, α need be mixed the video data that obtains and store back sprite corresponding in the video data of previous stage, to realize causing the performance cost of treatment facility bigger to the splicing processing of effective sprite of previous stage picture and local picture.

Summary of the invention

The embodiment of the invention provides a kind of processing method and relevant device and system of video data, can reduce to postpone, and reduce the performance cost of treatment facility, reduces the performance requirement to treatment facility.

The processing method of the video data that the embodiment of the invention provides is applied to comprise in the processing of cascade device video data: according to the picture strategy of this locality of presetting, the video data that collects is handled, obtained and preserve the video data of local picture; Receive the video data of previous stage; Obtain the capable field sync signal of the video data of previous stage; When getting access to capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved; Postpone to control according to the video data of the control lag that presets to previous stage; The video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture; If the corresponding levels are intergrade, then one-level sends video data at the corresponding levels backward, if the corresponding levels are afterbody, then sends video data at the corresponding levels to display terminal.

The treatment facility of the video data that the embodiment of the invention provides comprises: handle and preserve module, be used for the picture strategy according to this locality of presetting, the video data that collects is handled, obtain and preserve the video data of local picture; Receiver module is used to receive the video data of previous stage; Acquisition module is used to obtain the capable field sync signal of the video data of previous stage; Data acquisition module is used for when acquisition module gets access to capable field sync signal, begins to obtain the video data of local picture from the original position of the video data of the local picture preserved; Postpone control module, be used for postponing to control according to the video data of the control lag that presets to previous stage; The data mixing module is used for the video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture; Sending module, being used for backward, one-level sends video data at the corresponding levels.

The afterbody treatment facility of the video data that the embodiment of the invention provides comprises: handle and preserve module, be used for the picture strategy according to this locality of presetting, the video data of camera collection is handled the video data that obtains and preserve local picture; Receiver module is used to receive the video data of previous stage; Acquisition module is used to obtain the capable field sync signal of the video data of previous stage; Data acquisition module is used for when getting access to capable field sync signal, begins to obtain the video data of local picture from the original position of the video data of the local picture preserved; Postpone control module, be used for postponing to control according to the video data of the control lag that presets to previous stage; The data mixing module is used for the video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture; Sending module is used for sending video data at the corresponding levels to display terminal.

The many image display systems of the multichannel that the embodiment of the invention provides comprise: first equipment, be used for picture strategy according to this locality of presetting, and the video data that collects is handled, obtain and preserve the video data of local picture; With the video data of local picture as the video data of the corresponding levels backward one-level send; Second equipment is used for the picture strategy according to this locality of presetting, and the video data that collects is handled, and obtains and preserve the video data of local picture; Receive the video data of previous stage; Obtain the capable field sync signal of the video data of previous stage; When getting access to capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved; Postpone to control according to the video data of the control lag that presets to previous stage; The video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture; One-level sends video data at the corresponding levels backward.

In the embodiment of the invention, treatment facility at the corresponding levels is handled the video data that collects, obtain and preserve the video data of local picture, when getting access to capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved, and the video data of previous stage is postponed control according to the control lag that presets, to realize the video data lines field synchronization of the video data of local picture and previous stage and to postpone synchronous.

After realizing the row field synchronization and postponing synchronously, treatment facility at the corresponding levels carries out α to the video data of local picture with the video data of previous stage and mixes the video data that obtains the corresponding levels, to the splicing processing of previous stage picture and local picture.Relative prior art, present embodiment do not need the video data with previous stage to deposit memory in realizing previous stage picture and the processing of local picture splicing, thereby have reduced delay; And present embodiment mixes the splicing that then realizes previous stage picture and local picture by α to be handled, and need not to store α again and mixes the video data that obtains, thereby reduced performance cost, has reduced the performance requirement to treatment facility.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the flow chart of an embodiment of the processing method of video data in the embodiment of the invention;

Fig. 2 is the flow chart of another embodiment of the processing method of video data in the embodiment of the invention;

Fig. 3 is the flow chart of another embodiment of the processing method of video data in the embodiment of the invention;

Fig. 4 is the schematic diagram of an embodiment of the treatment facility of video data in the embodiment of the invention;

Fig. 5 is the schematic diagram of another embodiment of the treatment facility of video data in the embodiment of the invention;

Fig. 6 is the schematic diagram of an embodiment of the afterbody treatment facility of video data in the embodiment of the invention;

Fig. 7 is the schematic diagram of another embodiment of the afterbody treatment facility of video data in the embodiment of the invention;

Fig. 8 is the schematic diagram of an embodiment of the many image display systems of multichannel in the embodiment of the invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.

The embodiment of the invention provides a kind of processing method and relevant device and system of video data, can reduce to postpone.Below be elaborated respectively.

See also Fig. 1, the processing method of video data embodiment comprises in the embodiment of the invention:

101, according to the picture strategy of this locality of presetting, the video data that collects is handled, obtained and preserve the video data of local picture;

In the many image display systems of the multichannel that comprises multi-stage processing equipment, control bus can be to the picture strategy of this locality at different levels that treatment facility synchronized transmissions at different levels preset, the picture strategy is used to indicate whether mistake of picture, the sprite distribution mode that picture segmentation becomes, and effective sprite distribution mode.And, control bus is to mate mutually between the picture strategy of this locality of treatment facility synchronized transmissions at different levels, so that local picture at different levels is to mate mutually, it is the sprite mode unanimity that is divided into of local picture at different levels, and effective sprite distribution mode of local picture at different levels is conflict mutually not, makes display terminal can show effective sprite of local picture at different levels simultaneously.

Therefore, treatment facility at the corresponding levels is according to the picture strategy of this locality of presetting, with camera collection to the picture of video data dwindle or processing and amplifying, obtain local video data, according to the picture strategy of this locality of presetting the video data of this locality is stored to effective sprite zone of local picture again, and according to the picture strategy of this locality of presetting with the invalid sprite zone of specific data storages to local picture, obtain the video data of local picture, wherein, particular data can be for the fixed data that presets, as 0.

102, receive the video data of previous stage;

Treatment facility at the corresponding levels receives the video data of previous stage.

103, obtain the capable field sync signal of the video data of previous stage;

After receiving the video data of previous stage, treatment facility at the corresponding levels obtains the capable field sync signal of the video data of previous stage.Treatment facility at the corresponding levels can be by the previous stage video data of synchronous detecting reception, to obtain the capable field sync signal of previous stage video data.

104, when getting access to capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved;

When the capable field sync signal of the video data that gets access to previous stage, the original position of the video data of the local picture that treatment facility at the corresponding levels is preserved from external memory storage begins, read the video data of local picture successively, so that the video data of the video data of previous stage and local picture keeps the row field synchronization.

105, postpone to control according to the video data of the control lag that presets to previous stage;

Mention in step 103 and step 104, the video data that obtains local picture need pass through following processing procedure: the capable field sync signal of obtaining the video data of previous stage; When getting access to capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved.The connect video data of the previous stage received of the video data of the local picture that therefore, obtains has the extra process that above-mentioned processing procedure causes and postpones.

So treatment facility at the corresponding levels need preset corresponding control lag, and according to this control lag the video data of the previous stage that receives is postponed control, so that the video data of the previous stage during execution in step 106 and the video data of local picture keep postponing synchronously.

Need to prove there is not inevitable sequencing between step 105 and step 103 or the step 104 herein.

106, video data and the video data of local picture that will postpone the previous stage after the control carries out the video data that α mixes the acquisition corresponding levels;

Treatment facility at the corresponding levels carries out α to the video data of previous stage with the video data of local picture according to formula result=α * source1+ (1-α) * source2 to be mixed, wherein result is a video data at the corresponding levels, source1 is the video data of previous stage, and source2 is the video data of local picture.

The span of α is [0,1], and 1 〉=α 〉=0, and treatment facility at the corresponding levels can be provided with α according to different demands.For example, when needs preferentially guarantee the correctness of local picture, can be set to 0 by α, make the video data of the video data covering previous stage of local picture; When needs preferentially guarantee the correctness of previous stage picture, can be set to 1 by α, make the video data of previous stage cover the video data of local picture.

The video data of the previous stage after treatment facility at the corresponding levels will postpone to control carries out α with the video data of local picture to be mixed, realization is handled the splicing of the video data of the video data of previous stage and local picture, and the data of effective sprite of local picture are local video data, therefore, realized the video data of previous stage is handled with the splicing of the video data of this locality.

107, if the corresponding levels are intergrade, then one-level sends video data at the corresponding levels backward, if the corresponding levels are afterbody, then sends video data at the corresponding levels to display terminal.

Present embodiment is applied to during the cascade device video data handles, if corresponding levels be intergrade, i.e. and the second level arbitrary grade to the penultimate stage, the one-level treatment facility transmission backward of the video data of the corresponding levels that treatment facility at the corresponding levels will obtain.

If the corresponding levels are afterbody, the video data of the corresponding levels that treatment facility at the corresponding levels will obtain sends video data at the corresponding levels to display terminal, so that display terminal shows the many pictures of multichannel simultaneously.

In the present embodiment, because the video data of local picture is identical with the picture size of the video data of previous stage, so, to the capable field synchronization of video data of the video data of previous stage and local picture with after postponing synchronously, treatment facility at the corresponding levels carries out α to the video data of local picture with the video data of previous stage and mixes the video data that obtains the corresponding levels, then realizes the splicing processing to previous stage picture and local picture.Relative prior art, present embodiment do not need to deposit the video data of previous stage in external memory storage with the splicing processing of realization to previous stage picture and local picture, thereby have reduced delay; And, present embodiment mixes the splicing that then realizes previous stage picture and local picture by α to be handled, need not to store again α and mix the video data that obtains, thereby reduced the performance cost of the second level, reduced the performance requirement of the second level to the afterbody treatment facility to the afterbody treatment facility.

In actual applications, control bus nonsynchronous situation can occur to the picture strategy of this locality that treatment facilities at different levels send, cause the picture strategy of this locality at different levels not match mutually, local pictures at different levels can not match mutually, thereby make display terminal show wrong picture.In addition, in actual applications, the picture that camera is taken may be wrong, causes display terminal to show wrong picture.

In order to solve when the picture mistake, perhaps, when causing pictures at different levels not match mutually because of the picture strategy of this locality at different levels is asynchronous, display terminal can show the problem of error picture, see also Fig. 2, the embodiment of the invention provides another embodiment of the processing method of video data, comprising:

201, according to the picture strategy of this locality of presetting, the video data that collects is handled, obtained and preserve the video data of local picture;

202, receive the video data of previous stage;

203, obtain the capable field sync signal of the video data of previous stage, and the vertical blanking district from the video data of previous stage obtains the picture strategy of previous stage;

After receiving the video data of previous stage, treatment facility at the corresponding levels obtains the capable field sync signal of previous stage video data, and the vertical blanking district from the video data of previous stage obtains the picture strategy of previous stage.

In the present embodiment, picture strategy at different levels is arranged on the vertical blanking district in the video data at different levels.Therefore, the vertical blanking district of treatment facility at the corresponding levels from the video data of previous stage obtains the picture strategy of previous stage, and whether this picture strategy indication previous stage picture is the sprite distribution mode that is divided into of error picture, previous stage picture and effective sprite distribution mode of previous stage picture.

Need to prove herein, obtain the step of capable field sync signal of the video data of previous stage, the step of obtaining the picture strategy of previous stage with vertical blanking district from the video data of previous stage does not have inevitable sequencing.

204, when getting access to capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved;

205, postpone to control according to the video data of the control lag that presets to previous stage;

Treatment facility at the corresponding levels postpones control according to the control lag that presets to the video data of previous stage, so that the video data of the previous stage during execution in step 209 and the video data of local picture keep postponing synchronously.

Need to prove there is not inevitable sequencing between step 205 and step 203 or the step 204 herein.

206, according to the picture strategy of the picture strategy of previous stage and this locality of presetting, judge whether previous stage picture and local picture have a picture mistake at least, or whether the sprite distribution mode that is divided into of previous stage picture and local picture is inconsistent, or whether the previous stage picture conflicts mutually with effective sprite distribution mode of local picture, if, and the corresponding levels are intergrade, and then execution in step 207; If not, when the corresponding levels are intergrade, execution in step 208, when the corresponding levels are afterbody, execution in step 209;

The afoul meaning of effective sprite distribution mode of previous stage picture and local picture is: in the previous stage picture, at least exist an effective sprite in local picture, also to be effective sprite, promptly there is a sprite at least, effective simultaneously in previous stage picture and local picture.

Treatment facility at the corresponding levels has a picture mistake at least if judge previous stage picture and local picture, or the sprite distribution mode that is divided into of previous stage picture and local picture is inconsistent, or the previous stage picture conflicts mutually with effective sprite distribution mode of local picture, then when the corresponding levels are intergrade, treatment facility execution in step 207 at the corresponding levels, when the corresponding levels were afterbody, treatment facility at the corresponding levels abandoned the video data of previous stage, stopped to carry out the processing of video data.

Treatment facility at the corresponding levels does not have the picture mistake if judge in previous stage picture and the local picture, and the previous stage picture is consistent with the sprite distribution mode that is divided into of local picture, and the previous stage picture does not conflict mutually with effective sprite distribution mode of local picture, then when the corresponding levels are intergrade, treatment facility execution in step 208 at the corresponding levels, when the corresponding levels are afterbody, treatment facility execution in step 209 at the corresponding levels.

Herein, for ease of setting forth, the sprite distribution mode that is divided into of previous stage picture and local picture is inconsistent, or the afoul situation of effective sprite distribution mode of previous stage picture and local picture, previous stage picture and the unmatched situation of local picture be called.

Need to prove that herein step 206 does not have inevitable sequencing with step 205.

207, the vertical blanking district in the previous stage video data after postponing control, generate picture strategy at the corresponding levels, and this picture strategy indication picture mistake, the sprite distribution mode that the picture segmentation of indication becomes and effective sprite distribution mode, equal consistent with local picture strategy indication, after generating picture strategy at the corresponding levels, execution in step 209;

Herein, sprite distribution mode that the picture segmentation of the picture strategy indication at the corresponding levels that treatment facility at the corresponding levels generates becomes and effective sprite distribution mode, also can be all with the picture strategy of previous stage indicate consistent.

Need to prove that herein treatment facility at the corresponding levels also can generate picture strategy at the corresponding levels in the vertical blanking district in the video data of the previous stage before postponing control.

208, the vertical blanking district in the previous stage video data after postponing control, generate picture strategy at the corresponding levels, and this picture strategy indication picture is correct, the sprite distribution mode of the picture segmentation one-tenth of indication is consistent with local picture strategy indication, effective sprite distribution mode of indication be previous stage with the stack of local picture strategy indication after effective sprite distribution mode, after generating picture strategy at the corresponding levels, execution in step 209;

Herein, the sprite distribution mode that the picture segmentation of picture strategy indication at the corresponding levels becomes is consistent with local picture strategy indication, because the sprite distribution mode of the picture segmentation one-tenth of local picture strategy indication is consistent with the picture strategy indication of previous stage, therefore, also consistent with the picture strategy indication of previous stage of the sprite distribution mode that becomes of the picture segmentation of picture strategy indication at the corresponding levels.

Effective sprite distribution mode of picture strategy indication at the corresponding levels be previous stage with the stack of local picture strategy indication after effective sprite distribution mode, these words show: the sprite of picture at the corresponding levels, if be effective sprite in the previous stage picture, or be effective sprite in local picture, this sprite is effective sprite of picture at the corresponding levels.

209, the video data with previous stage carries out the video data that α mixes the acquisition corresponding levels with the video data of local picture;

Be understandable that there is picture strategy at the corresponding levels in the vertical blanking district in the video data of the corresponding levels herein.

210, if the corresponding levels are intergrade, then one-level sends video data at the corresponding levels backward, if the corresponding levels are afterbody, then sends video data at the corresponding levels to display terminal.

If the corresponding levels are intergrade, the video data of the corresponding levels that treatment facility at the corresponding levels will obtain one-level treatment facility backward sends.

In fact, in step 207 and step 208, vertical blanking district in the video data of previous stage generates picture strategy at the corresponding levels, is for the picture strategy with the corresponding levels is arranged in the video data at the corresponding levels, makes picture strategy at the corresponding levels along with the video data of corresponding levels one-level synchronized transmission backward.Be understandable that, treatment facility at the corresponding levels also can be in the vertical blanking district in the video data of local picture, perhaps the vertical blanking district in the video data of the corresponding levels generates picture strategy at the corresponding levels, makes picture strategy at the corresponding levels be arranged on vertical blanking district in the video data at the corresponding levels.

Be understandable that picture strategy at the corresponding levels also can not be arranged on the vertical blanking district in the video data at the corresponding levels and transmit independently, but needs to keep synchronous transmission with the video data of the corresponding levels.

If the picture strategy of the corresponding levels that generate indication picture mistake, so, when the picture strategy of the corresponding levels was sent to back one-level treatment facility, back one-level treatment facility can generate the picture strategy of the back one-level of indication picture mistake again.Therefore, in case previous stage picture mistake appears in the corresponding levels, or local picture mistake, or previous stage picture and the unmatched situation of local picture, this situation then can be delivered to the afterbody treatment facility by the picture strategy.

In the present embodiment, when the corresponding levels are afterbody, before execution in step 209, if judge previous stage picture and local picture neither one picture mistake, and the sprite distribution mode unanimity that is divided into, and effectively not conflict mutually of sprite distribution mode then trigger step 209, and the video data of the corresponding levels that obtain in the step 209 sent to display terminal, so that display terminal shows the many pictures of multichannel simultaneously; Has a picture mistake at least if judge previous stage picture and local picture, or the sprite distribution mode that is divided into is inconsistent, or effectively the sprite distribution mode is conflicted mutually, execution in step 209 not then, promptly do not obtain video data at the corresponding levels, make display terminal keep current picture, do not carry out picture and switch, thereby avoided display terminal to show the situation of error picture.Therefore, embodiment illustrated in fig. 1 relatively, present embodiment can also be when the picture mistake that camera is taken, perhaps, when causing pictures at different levels not match mutually, make display terminal keep current picture, and do not show error picture because of the picture strategy of this locality at different levels is asynchronous.

Above mention, can generate the picture strategy in the vertical blanking district (VBI, Vertical BlankingInterval) in video data, at this moment,, the picture strategy is called the VBI data for ease of setting forth.

Can carry out as giving a definition the VBI data:

The VBI data comprise:

The picture error identification, with the 0th bit indication of VBI data, and to arrange the 0th bit be 1 indication picture mistake;

The sprite distribution sign that picture segmentation becomes, the 1st bit to the 7 bits indication with the VBI data, and the sprite quantity that becomes with the numerical value indication picture segmentation of agreement, and arrange the only corresponding a kind of sprite distribution mode of each sprite quantity, therefore, the sprite distribution sign of picture segmentation one-tenth only need indicate sprite quantity can indicate the sprite distribution mode simultaneously; For example, agreement sprite quantity is 4 o'clock, and each sprite is sphere of movements for the elephants and distributes, and the sprite distribution sign of picture segmentation one-tenth only need get final product with the numerical value indication 4 of agreement so, indicates 4 as agreement " 0000100 ";

Effectively sprite distribution sign with the 8th bit to the 39 bits indication of VBI data, and is arranged corresponding 1 bit of each sprite, and bit is that the corresponding sprite of 1 indication is effective.

For ease of understanding the processing method of the video data in the embodiment of the invention, be the VBI data instance of above-mentioned definition with the picture strategy below, this method is described in detail.See also Fig. 3, another embodiment of the processing method of the video data in the embodiment of the invention comprises:

301, according to the VBI data of this locality of presetting, the video data that collects is handled, obtained and preserve the video data of local picture;

302, receive the video data of previous stage;

303, obtain the capable field sync signal of previous stage video data, and from the video data of previous stage, obtain the VBI data of previous stage;

After receiving the video data of previous stage, treatment facility at the corresponding levels obtains the capable field sync signal of the video data of previous stage, and obtains the VBI data of previous stage, i.e. the picture strategy of previous stage.

304, when getting access to capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved;

305, postpone to control according to the video data of the control lag that presets to previous stage;

Treatment facility at the corresponding levels postpones control according to the control lag that presets to the video data of previous stage, so that the video data of the previous stage during execution in step 309 and the video data of local picture keep postponing synchronously.

Need to prove there is not inevitable sequencing between step 305 and step 303 or the step 304 herein.

306, according to the VBI data of the VBI data of previous stage and this locality of presetting, whether whether the VBI data of judging previous stage have at least one to be 1 with the 0th bit of local VBI data, or whether the 1st bit to the 7 bits are inconsistent, or have at least 1 bit to be 1 in the 8th bit to the 39 bits, if, and the corresponding levels are intergrade, and then execution in step 307, if not, when the corresponding levels are intergrade, execution in step 308, when the corresponding levels are afterbody, execution in step 309;

After getting access to the VBI data of previous stage, treatment facility at the corresponding levels is done as is judged, and whether judging in previous stage picture and the local picture wrong picture, or whether previous stage picture and local picture mate mutually:

The picture error identification of the VBI data of the VBI data of previous stage and this locality, promptly whether the 0th bit has at least one to be 1;

Perhaps, the sprite distribution sign that the VBI data of previous stage become with the picture segmentation of the VBI data of this locality, promptly whether the 1st bit to the 7 bits are inconsistent;

Perhaps, whether whether the VBI data of previous stage conflict mutually with effective sprite distribution sign of the VBI data of this locality, promptly have at least 1 bit to be 1 in both the 8th bit to the 39 bits.

Treatment facility at the corresponding levels is if the 0th bit of the VBI data of the VBI data of judgement previous stage and this locality has at least one to be 1; Or the VBI data of judging previous stage are inconsistent with the 1st bit to the 7 bits of local VBI data, are respectively " 0000100 " and " 0000011 " as the 1st bit to the 7 bits of the VBI data of previous stage and local VBI data; Or have at least 1 bit to be 1 in the 8th bit to the 39 bits of the VBI data of the VBI data of judgement previous stage and this locality, the 10th bit as the VBI data of previous stage and local VBI data is 1, then when the corresponding levels are intergrade, treatment facility execution in step 307 at the corresponding levels, when the corresponding levels are afterbody, treatment facility at the corresponding levels abandons the video data of previous stage, stops to carry out the processing of video data.

Treatment facility at the corresponding levels is if the 0th bit neither one of the VBI data of the VBI data of judgement previous stage and this locality is 1, and the 1st bit to the 7 bit unanimities, and there is not 1 bit to be 1 in the 8th bit to the 39 bits, then when the corresponding levels are intergrade, treatment facility execution in step 308 at the corresponding levels, when the corresponding levels are afterbody, treatment facility execution in step 309 at the corresponding levels.

307, the VBI in the video data of the previous stage after postponing control, generate VBI data at the corresponding levels, and the picture error identification of these VBI data is 1, the sprite distribution sign of picture segmentation one-tenth is consistent with local VBI data, effectively the VBI data of sprite distribution sign and this locality is consistent, after generating VBI data at the corresponding levels, execution in step 309;

Herein, the sprite distribution sign that becomes of the picture segmentation of Ben Ji VBI data, effectively sprite distribution sign also can be arranged to consistent with the VBI data of previous stage.

308, the VBI in the video data of the previous stage after postponing control, generate VBI data at the corresponding levels, and the picture error identification of these VBI data is 0, the sprite distribution sign of picture segmentation one-tenth is consistent with local VBI data, effectively each bit of sprite distribution sign effective sprite distribution sign of equaling the local VBI data and VBI data previous stage by bit mutually or, after generating VBI data at the corresponding levels, execution in step 309;

Effective sprite distribution sign that each bit of effective sprite distribution sign of VBI data at the corresponding levels equals the local VBI data and VBI data previous stage by bit mutually or, make the sprite of picture at the corresponding levels, if be effective sprite in the previous stage picture, or be effective sprite in picture at the corresponding levels, this sprite is effective sprite of picture at the corresponding levels.

For example, the 8th bit to the 15 bits of the local VBI data and the VBI data of previous stage are respectively " 01010011 " and " 10100010 ", then the 8th bit to the 15 bits of Ben Ji VBI data be " 01010011 " with " 10100010 " mutually or value, i.e. " 11110011 ".

309, the video data with previous stage carries out the video data that α mixes the acquisition corresponding levels with the video data of local picture;

310, if the corresponding levels are intergrade, then one-level sends video data at the corresponding levels backward, if the corresponding levels are afterbody, then sends video data at the corresponding levels to display terminal.

If the picture error identification of the VBI data of the corresponding levels that generate is 1, so, when the picture strategy of the corresponding levels was transferred to back one-level treatment facility, back one-level treatment facility can generate the VBI data that the picture error identification is 1 back one-level again.Therefore, in case previous stage picture mistake appears in the corresponding levels, or local picture mistake, or previous stage picture and the unmatched situation of local picture, this situation then can be passed through VBI data passes one-level treatment facility to the end.

And, in the present embodiment, when the corresponding levels are afterbody, before execution in step 309, if the 0th bit neither one of the VBI data of the VBI data of judgement previous stage and this locality is 1, and the 1st bit to the 7 bit unanimities, and there is not 1 bit to be 1 in the 8th bit to the 39 bits, then trigger step 309, and the video data of the corresponding levels of acquisition in the step 309 is sent to display terminal, so that display terminal shows the many pictures of multichannel simultaneously; Otherwise the afterbody treatment facility is execution in step 309 not, does not obtain video data at the corresponding levels, makes display terminal keep current picture, does not carry out picture and switches, thereby avoided display terminal to show the situation of error picture.

Treatment facility to the video data in the embodiment of the invention describes below, sees also Fig. 4, and an embodiment of the treatment facility of the video data in the embodiment of the invention comprises:

Handle and preserve module 401, be used for picture strategy, the video data that collects is handled, obtain and preserve the video data of local picture according to this locality of presetting;

Receiver module 402 is used to receive the video data of previous stage;

Acquisition module 403 is used to obtain the capable field sync signal of the video data of previous stage;

Data acquisition module 404 is used for when getting access to capable field sync signal, begins to obtain the video data of local picture from the original position of the video data of the local picture preserved;

Postpone control module 405, be used for postponing to control according to the video data of the control lag that presets to previous stage;

Data mixing module 406 is used for the video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture;

Sending module 407, being used for backward, one-level sends video data at the corresponding levels.

In the present embodiment, handle and preserve the picture strategy of module 401, the video data that camera collection arrives is handled, obtain and preserve the video data of local picture according to this locality of presetting.

When receiver module 402 received the video data of previous stage, acquisition module 403 can obtain the capable field sync signal of the video data of previous stage by the video data of synchronous detecting previous stage.

When acquisition module 403 gets access to capable field sync signal, data acquisition module 404 begins from the original position of handling the video data of preserving the local picture of preserving the module 401, read the video data of local picture successively, make the video data of previous stage and the video data of local picture keep the row field synchronization.

When receiver module 402 receives the video data of previous stage, then postpone the control lag that the video data increase of 405 pairs of previous stage of control module is preset, make the video data of the previous stage that data mixing module 406 receives from postpone control module 405, the video data of the local picture that receives from data acquisition module 404 with data mixing module 406 keeps postponing synchronous.

After the video data to previous stage postponed control, the video data of 406 pairs of previous stage of data mixing module mixed the video data that obtains the corresponding levels with the video data α of local picture, and sending module 407 one-level backward sends video data at the corresponding levels.

The treatment facility of the video data in the present embodiment can be the second level arbitrary grade of treatment facility to the penultimate stage in the many image display systems of multichannel.

Need to prove herein, afterbody treatment facility in the many image display systems of multichannel can be same as afterbody treatment facility of the prior art, also can be only with present embodiment in the treatment facility of video data following difference is arranged: the sending module of afterbody treatment facility sends video data at the corresponding levels to display terminal.

In the present embodiment, because the video data of local picture is identical with the picture size of the video data of previous stage, so, after the capable field synchronization of video data and delay synchronously of data acquisition module 404 and video data that postpones 405 pairs of previous stage of control module and local picture, the video data of 406 pairs of local pictures of data mixing module carries out α with the video data of previous stage and mixes the video data that obtains the corresponding levels, then realizes the splicing of previous stage picture and local picture is handled.Relative prior art, present embodiment do not need to deposit the video data of previous stage in external memory storage with the splicing processing of realization to previous stage picture and local picture, thereby have reduced delay; And present embodiment mixes the splicing that then realizes previous stage picture and local picture by α to be handled, and need not to store α again and mixes the video data that obtains, thereby reduced the performance cost of treatment facility, has reduced the performance requirement to treatment facility.

Corresponding to embodiment illustrated in fig. 2, see also Fig. 5, the embodiment of the invention also provides another embodiment of the treatment facility of video data, comprising:

Handle and preserve module 501, be used for picture strategy, the video data that collects is handled, obtain and preserve the video data of local picture according to this locality of presetting;

Receiver module 502 is used to receive the video data of previous stage;

Acquisition module 503 is used to obtain the capable field sync signal of the video data of previous stage;

Data acquisition module 504 is used for when getting access to capable field sync signal, begins to obtain the video data of local picture from the original position of the video data of the local picture preserved;

Postpone control module 505, be used for postponing to control according to the video data of the control lag that presets to previous stage;

Data mixing module 506 is used for after generating picture strategy at the corresponding levels, and video data and the video data of local picture of previous stage carried out the video data that α mixes the acquisition corresponding levels;

Picture strategy acquisition module 507 is used for obtaining from the VBI of the video data of previous stage the picture strategy of previous stage, sprite distribution mode that whether picture strategy indication picture is wrong, picture segmentation becomes and effective sprite distribution mode;

Judge module 508, be used for according to the picture strategy of previous stage and the picture strategy of this locality of presetting, judge whether previous stage picture and local picture have a picture mistake at least, or whether the sprite distribution mode that is divided into of previous stage picture and local picture is inconsistent, or whether the previous stage picture conflicts mutually with effective sprite distribution mode of local picture;

Generation module 509, be used for having a picture mistake at least if judge previous stage picture and local picture, or the sprite distribution mode that is divided into is inconsistent, or effectively the sprite distribution mode is conflicted mutually, then the VBI in the video data of the previous stage after postponing control generates picture strategy at the corresponding levels, and this picture strategy indication picture mistake, sprite distribution mode that the picture segmentation of indication becomes and effective sprite distribution mode, all with the picture strategy of this locality indicate consistent; Otherwise the VBI in the video data of the previous stage after postponing control, generate picture strategy at the corresponding levels, and this picture strategy indication picture is correct, the sprite distribution mode that the picture segmentation of indication becomes is consistent with local picture strategy indication, the effective sprite distribution mode after the stack that to be previous stage indicate with local picture strategy of effective sprite distribution mode of indication;

Sending module 510, being used for backward, one-level sends video data at the corresponding levels.

In the present embodiment, handle to preserve the picture strategies of module 501 according to this locality of presetting, with camera collection to video data handle the video data that obtains and preserve local picture.

When receiver module 502 receives the video data of previous stage, acquisition module 503 can be by the video data of synchronous detecting previous stage, obtain the capable field sync signal of the video data of previous stage, and picture strategy acquisition module 507 obtains the picture strategy of previous stage from the VBI of the video data of previous stage.

When acquisition module 503 gets access to capable field sync signal, the original position of the video data of the local picture that data acquisition module 504 is preserved from external memory storage begins, read the video data of local picture successively, make the video data of previous stage and the video data of local picture keep the row field synchronization.

When picture strategy acquisition module 507 gets access to the picture strategy of previous stage, judge module 508 is according to the picture strategy of previous stage and the picture strategy of this locality of presetting, judge whether previous stage picture and local picture have a picture mistake at least, or whether the sprite distribution mode that is divided into of previous stage picture and local picture is inconsistent, or whether the previous stage picture conflicts mutually with effective sprite distribution mode of local picture.

If judge module 508 judges that previous stage picture and local picture have a picture mistake at least, or the sprite distribution mode that is divided into is inconsistent, or effectively the sprite distribution mode is conflicted mutually, the VBI in the video data of the previous stage of generation module 509 after postponing control then, generate picture strategy at the corresponding levels, and this picture strategy indication picture mistake, sprite distribution mode that the picture segmentation of indication becomes and effective sprite distribution mode, all with the picture strategy of this locality indicate consistent.

If judge module 508 is judged previous stage picture and local picture neither one picture mistake, and the sprite distribution mode unanimity that is divided into, and effectively not conflict mutually of sprite distribution mode, the VBI in the video data of the previous stage of generation module 509 after postponing control then, generate picture strategy at the corresponding levels, and this picture strategy indication picture is correct, the sprite distribution mode that the picture segmentation of indication becomes is consistent with local picture strategy indication, the effective sprite distribution mode after the stack that to be previous stage indicate with local picture strategy of effective sprite distribution mode of indication.

When receiver module 502 receives the video data of previous stage, the video data that then postpones 504 pairs of previous stage of control module postpones control, make the video data of the previous stage that data mixing module 506 receives from generation module 509, the video data of the local picture that receives from data acquisition module 504 with data mixing module 506 keeps postponing synchronously.

After generating picture strategy at the corresponding levels, then the video data of 506 pairs of previous stage of data mixing module carries out the video data that α mixes the acquisition corresponding levels with the video data of local picture, and sending module 510 one-level backward sends video data at the corresponding levels.Because picture strategy at the corresponding levels is arranged on the VBI in the video data at the corresponding levels, so sending module 510 when one-level sends the video data of the corresponding levels backward, also one-level has sent picture strategy at the corresponding levels backward.

In the present embodiment, the treatment facility of video data can be the second level arbitrary grade of treatment facility to the penultimate stage in the many image display systems of multichannel.As if the picture strategy indication picture mistake of the corresponding levels that generate at treatment facility at the corresponding levels, so, when the picture strategy of the corresponding levels was transferred to back one-level treatment facility, back one-level treatment facility can generate the picture strategy of the back one-level of indication picture mistake again.Therefore, in case previous stage picture mistake appears at treatment facility at the corresponding levels, or local picture mistake, or previous stage picture and the unmatched situation of local picture, this situation then can be delivered to the afterbody treatment facility by the picture strategy.

In the present embodiment, generation module 509 generates different picture strategies according to the judged result of judge module, so that the afterbody treatment facility is according to the picture strategy of penultimate stage and the picture strategy of this locality of presetting, judge whether penultimate stage picture and local picture have a picture mistake at least, or whether the sprite distribution mode that is divided into is inconsistent, or effectively whether the sprite distribution mode conflicts mutually, if the afterbody treatment facility is judged neither one picture mistake, and the sprite distribution mode unanimity that is divided into, and effectively not conflict mutually of sprite distribution mode, then the afterbody treatment facility obtains and sends video data at the corresponding levels to display terminal, so that display terminal shows the many pictures of multichannel simultaneously; If judging, the afterbody treatment facility has a picture mistake at least, or the sprite distribution mode that is divided into is inconsistent, or effectively the sprite distribution mode is conflicted mutually, then the afterbody treatment facility does not obtain video data at the corresponding levels, make display terminal keep current picture, do not carry out picture and switch, thereby avoided display terminal to show the situation of error picture.

Corresponding to embodiment illustrated in fig. 4, see also Fig. 6, the embodiment of the invention provides an embodiment of the afterbody treatment facility of video data, comprising:

Handle and preserve module 601, be used for picture strategy, the video data that collects is handled, obtain and preserve the video data of local picture according to this locality of presetting;

Receiver module 602 is used to receive the video data of previous stage;

Acquisition module 603 is used to obtain the capable field sync signal of the video data of previous stage;

Data acquisition module 604 is used for when getting access to capable field sync signal, begins to obtain the video data of local picture from the original position of the video data of the local picture preserved;

Postpone control module 605, be used for postponing to control according to the video data of the control lag that presets to previous stage;

Data mixing module 606 is used for the video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture;

Sending module 607 is used for sending video data at the corresponding levels to display terminal.

The afterbody treatment facility of the video data in the present embodiment is with difference part embodiment illustrated in fig. 4: the sending module 607 of the afterbody treatment facility of the video data in the present embodiment is used for sending video data at the corresponding levels to display terminal.

Be same as embodiment illustrated in fig. 4ly, present embodiment does not need the video data with previous stage to deposit external memory storage in realizing the splicing processing to previous stage picture and local picture, thereby has reduced delay; And present embodiment mixes the splicing that then realizes previous stage picture and local picture by α to be handled, and need not to store α again and mixes the video data that obtains, thereby reduced the performance cost of treatment facility, has reduced the performance requirement to treatment facility.

Corresponding to embodiment illustrated in fig. 5, see also Fig. 7, the embodiment of the invention also provides another embodiment of the afterbody treatment facility of video data, comprising:

Handle and preserve module 701, be used for picture strategy, the video data that collects is handled, obtain and preserve the video data of local picture according to this locality of presetting;

Receiver module 702 is used to receive the video data of previous stage;

Acquisition module 703 is used to obtain the capable field sync signal of the video data of previous stage;

Data acquisition module 704 is used for when getting access to capable field sync signal, begins to obtain the video data of local picture from the original position of the video data of the local picture preserved;

Postpone control module 705, be used for postponing to control according to the video data of the control lag that presets to previous stage;

Picture strategy acquisition module 706 is used to obtain the picture strategy of previous stage, and the picture strategy is used to indicate whether picture is wrong, picture segmentation becomes sprite distribution mode and effective sprite distribution mode;

Judge module 707, be used for according to the picture strategy of previous stage and the picture strategy of this locality of presetting, judge whether previous stage picture and local picture have a picture mistake at least, or whether the sprite distribution mode that is divided into is inconsistent, or effectively whether the sprite distribution mode conflicts mutually, if judge neither one picture mistake, and the sprite distribution mode unanimity that is divided into, and effectively not conflict mutually of sprite distribution mode, then trigger data mixing module 708 is carried out associative operation.

Data mixing module 708 is used for the video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture;

Sending module 709 is used for sending video data at the corresponding levels to display terminal.

In the present embodiment, if judge module 707 is judged neither one picture mistake, and the sprite distribution mode unanimity that is divided into, and effectively not conflict mutually of sprite distribution mode, the video data of the previous stage after then trigger data mixing module 708 will postpone to control carries out α with the video data of local picture and mixes the video data that obtains the corresponding levels, sending module 709 sends video data at the corresponding levels to display terminal, thereby guarantees that display terminal shows correct picture; Otherwise data mixing module 708 is not carried out associative operation, makes display terminal keep current picture, does not carry out picture and switches, thereby avoided display terminal to show the situation of error picture.

Below the many image display systems of the multichannel in the embodiment of the invention are described, see also Fig. 8, an embodiment of the many image display systems of multichannel in the embodiment of the invention comprises:

First equipment 801 is used for the picture strategy according to this locality of presetting, and the video data that collects is handled, and obtains and preserve the video data of local picture; With the video data of local picture as the video data of the corresponding levels backward one-level send;

Second equipment 802 is used for the picture strategy according to this locality of presetting, and the video data that collects is handled, and obtains and preserve the video data of local picture; Receive the video data of previous stage; Obtain the capable field sync signal of the video data of previous stage; When getting access to capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved; Postpone to control according to the video data of the control lag that presets to previous stage; The video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture; One-level sends video data at the corresponding levels backward.

The 3rd equipment 803 is used for the picture strategy according to this locality of presetting, and the video data that collects is handled, and obtains and preserve the video data of local picture; Receive the video data of previous stage; Obtain the capable field sync signal of the video data of previous stage; When getting access to capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved; Postpone to control according to the video data of the control lag that presets to previous stage; The video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture; Send video data at the corresponding levels to display terminal.

Need to prove that herein the afterbody treatment facility in the system also can be same as afterbody treatment facility of the prior art.

In the present embodiment, because the video data of local picture is identical with the picture size of the video data of previous stage, so, second equipment 802 and the 3rd equipment 803 are to the capable field synchronization of video data of the video data of previous stage and local picture with after postponing synchronously, the video data of local picture and the video data of previous stage are carried out α mix and obtain video data at the corresponding levels, then realize splicing processing previous stage picture and local picture.Relative prior art, present embodiment do not need to deposit the video data of previous stage in external memory storage with the splicing processing of realization to previous stage picture and local picture, thereby have reduced delay; And present embodiment mixes the splicing that then realizes previous stage picture and local picture by α to be handled, and need not to store α again and mixes the video data that obtains, thereby reduced the performance cost of treatment facility, has reduced the performance requirement to treatment facility.

Need to prove herein, when the afterbody treatment facility is the 3rd equipment 803, system can include only bi-level treatment equipment, first equipment 801 is the first order treatment facility in the system, at this moment, because the afterbody treatment facility does not need to deposit the video data of previous stage in external memory storage with the splicing processing of realization to previous stage picture and local picture, thereby has reduced delay; And the afterbody treatment facility mixes the splicing that then realizes previous stage picture and local picture by α to be handled, and need not to store α again and mixes the video data that obtains, thereby reduced the performance cost of treatment facility, has reduced the performance requirement to treatment facility.

One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of the foregoing description is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.

More than the processing method of the video data that the embodiment of the invention provided and relevant device and system are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. the processing method of a video data is applied to it is characterized in that in the processing of cascade device video data, comprising:

According to the picture strategy of this locality of presetting, the video data that collects is handled, obtain and preserve the video data of local picture;

Receive the video data of previous stage;

Obtain the capable field sync signal of the video data of described previous stage;

When getting access to described capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved;

Postpone to control according to the video data of the control lag that presets to previous stage;

The video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture; Need not to store α and mix the video data that obtains;

If the corresponding levels are intergrade, then one-level sends video data at the corresponding levels backward, if the corresponding levels are afterbody, then sends video data at the corresponding levels to display terminal.

2. the processing method of video data according to claim 1 is characterized in that, described method also comprises:

Obtain the picture strategy of previous stage, described picture strategy is used to indicate whether picture is wrong, picture segmentation becomes sprite distribution mode and effective sprite distribution mode of picture;

According to the picture strategy of previous stage and the picture strategy of this locality of presetting, judge whether previous stage picture and local picture have a picture mistake at least, or whether the sprite distribution mode that is divided into is inconsistent, or effectively whether the sprite distribution mode conflicts mutually;

When the corresponding levels are intergrade, has a picture mistake at least if judge, or the sprite distribution mode that is divided into is inconsistent, or effectively the sprite distribution mode is conflicted mutually, then generation picture strategy at the corresponding levels, and this picture strategy indication picture mistake, the sprite distribution mode that the picture segmentation of indication becomes and effective sprite distribution mode, equal consistent with local picture strategy indication, or all with the picture strategy of previous stage indicate consistent; Otherwise generate picture strategy at the corresponding levels, and this picture strategy indication picture is correct, the sprite distribution mode that the picture segmentation of indication becomes is consistent with local picture strategy indication, the effective sprite distribution mode after the stack that to be previous stage indicate with local picture strategy of effective sprite distribution mode of indication; When one-level sent video data at the corresponding levels backward, one-level sent picture strategy at the corresponding levels backward.

3. the processing method of video data according to claim 1 is characterized in that, described method also comprises:

When the corresponding levels are afterbody, carrying out α at video data and the video data of local picture of described previous stage after will postponing control mixes and obtains to comprise before the video data at the corresponding levels: as if judgement neither one picture mistake, and the sprite distribution mode unanimity that is divided into, and effectively conflict mutually of sprite distribution mode then triggers the described video data that will postpone the previous stage after the control and carries out the video data that α mixes the acquisition corresponding levels with the video data of local picture.

4. the processing method of video data according to claim 2 is characterized in that, the described picture strategy that generates the corresponding levels comprises: the vertical blanking district in the video data of the corresponding levels generates picture strategy at the corresponding levels.

5. the processing method of video data according to claim 2 is characterized in that, the described picture strategy that generates the corresponding levels comprises: the vertical blanking district in the video data of previous stage generates picture strategy at the corresponding levels.

6. the processing method of video data according to claim 2 is characterized in that, the described picture strategy that generates the corresponding levels comprises: the vertical blanking district in the local picture that obtains generates picture strategy at the corresponding levels.

7. the treatment facility of a video data is characterized in that, comprising:

Handle and preserve module, be used for picture strategy, the video data that collects is handled, obtain and preserve the video data of local picture according to this locality of presetting;

Receiver module is used to receive the video data of previous stage;

Acquisition module is used to obtain the capable field sync signal of the video data of described previous stage;

Data acquisition module is used for when acquisition module gets access to described capable field sync signal, begins to obtain the video data of local picture from the original position of the video data of the local picture preserved;

Postpone control module, be used for postponing to control according to the video data of the control lag that presets to previous stage;

The data mixing module is used for the video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture;

Sending module, being used for backward, one-level sends video data at the corresponding levels.

8. the treatment facility of video data according to claim 7 is characterized in that, described equipment also comprises:

Picture strategy acquisition module is used to obtain the picture strategy of previous stage, and the picture strategy is used to indicate whether picture is wrong, picture segmentation becomes sprite distribution mode and effective sprite distribution mode;

Judge module, be used for according to the picture strategy of previous stage and the picture strategy of this locality of presetting, judge whether previous stage picture and local picture have a picture mistake at least, or whether the sprite distribution mode that is divided into is inconsistent, or effectively whether the sprite distribution mode conflicts mutually;

Generation module, be used for having a picture mistake at least if judge, or the sprite distribution mode that is divided into is inconsistent, or effectively the sprite distribution mode is conflicted mutually, then generation picture strategy at the corresponding levels, and this picture strategy indication picture mistake, the sprite distribution mode that the picture segmentation of indication becomes and effective sprite distribution mode, equal consistent with local picture strategy indication, or all with the picture strategy of previous stage indicate consistent; Otherwise generate picture strategy at the corresponding levels, and this picture strategy indication picture is correct, the sprite distribution mode that the picture segmentation of indication becomes is consistent with local picture strategy indication, the effective sprite distribution mode after the stack that to be previous stage indicate with local picture strategy of effective sprite distribution mode of indication;

When sending module also was used for one-level backward and sends video data at the corresponding levels, one-level sent picture strategy at the corresponding levels backward.

9. the afterbody treatment facility of a video data is characterized in that, comprising:

Handle and preserve module, be used for picture strategy, the video data of camera collection is handled the video data that obtains and preserve local picture according to this locality of presetting;

Receiver module is used to receive the video data of previous stage;

Data acquisition module is used for when getting access to described capable field sync signal, begins to obtain the video data of local picture from the original position of the video data of the local picture preserved;

Sending module is used for sending video data at the corresponding levels to display terminal.

10. the afterbody treatment facility of video data according to claim 9 is characterized in that, described equipment also comprises:

Judge module, be used for before the data mixing module is carried out associative operation, according to the picture strategy of previous stage and the picture strategy of this locality of presetting, judge whether previous stage picture and local picture have a picture mistake at least, or whether the sprite distribution mode that is divided into is inconsistent, or effectively whether the sprite distribution mode conflicts mutually, if judge neither one picture mistake, and the sprite distribution mode unanimity that is divided into, and effectively not conflict mutually of sprite distribution mode, then the trigger data mixing module is carried out associative operation.

11. the many image display systems of multichannel is characterized in that, comprising:

First equipment is used for the picture strategy according to this locality of presetting, and the video data that collects is handled, and obtains and preserve the video data of local picture; With the video data of local picture as the video data of the corresponding levels backward one-level send;

Second equipment is used for the picture strategy according to this locality of presetting, and the video data that collects is handled, and obtains and preserve the video data of local picture; Receive the video data of previous stage; Obtain the capable field sync signal of the video data of described previous stage; When getting access to described capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved; Postpone to control according to the video data of the control lag that presets to previous stage; The video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture; Need not to store α and mix the video data that obtains; One-level sends video data at the corresponding levels backward.

12. the many image display systems of multichannel according to claim 11 is characterized in that, described system also comprises:

The 3rd equipment is used for the picture strategy according to this locality of presetting, and the video data that collects is handled, and obtains and preserve the video data of local picture; Receive the video data of previous stage; Obtain the capable field sync signal of the video data of previous stage; When getting access to described capable field sync signal, begin to obtain the video data of local picture from the original position of the video data of the local picture preserved; Postpone to control according to the video data of the control lag that presets to previous stage; The video data of the previous stage after the delay control is carried out the video data that α mixes the acquisition corresponding levels with the video data of local picture; Send video data at the corresponding levels to display terminal.