CN104902192A - Transmission method and equipment for multipath signals - Google Patents
Transmission method and equipment for multipath signals Download PDFInfo
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- CN104902192A CN104902192A CN201510229706.XA CN201510229706A CN104902192A CN 104902192 A CN104902192 A CN 104902192A CN 201510229706 A CN201510229706 A CN 201510229706A CN 104902192 A CN104902192 A CN 104902192A
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Abstract
The invention discloses a transmission method for multipath signals. The method comprises the following steps: a multiplexing end scaling multipath input signals to be transmitted to generate image blocks corresponding to each path of input signals, and acquiring an output image according to the multiple generated image blocks; the multiplexing end transmitting the output image to a demultiplexing end via a transmission channel; and the demultiplexing end extracting the image blocks from the output image, and acquiring input signals corresponding to the image blocks. The invention further discloses transmission equipment for multipath signals. The transmission method and the transmission equipment can transmit multipath input signals only by the operations of scaling the multipath input signals to be transmitted to form image blocks and transmitting and extracting the image blocks without using dedicated coding and decoding chips at the multiplexing end and the demultiplexing end, so the transmission method and the transmission equipment are very simple and reduce the transmission cost of the multipath input signals.
Description
Technical field
The present invention relates to signal transmission technology field, particularly relate to a kind of transmission method and equipment of multiple signals.
Background technology
The parameter of current various signal has a variety of, and the resolution as vision signal has a variety of, and its bandwidth is also different.Resolution as SD signal is 640x480, and bandwidth is 13.5M, and the resolution of FHD signal is 1920x1080, and bandwidth then reaches 148.5M, and the resolution of UHD signal is 3840x2160, and bandwidth is up to 297M.Because different resolution signal bandwidth height differs greatly, and be all the transmission being carried out vision signal by the transmission channel of same band size, therefore, when the vision signal by transmission channel transmission low bandwidth, the effective rate of utilization of transmission channel is very low.
In order to improve the effective rate of utilization of transmission channel, be generally by multiple signals as four road SD signals adopt special chip to carry out time-sharing multiplex transmission in prior art, like this, multiplexing end, demultiplexing end need to adopt complicated special chip, not only coding and decoding process is complicated, and cost is higher.
Summary of the invention
Main purpose of the present invention is the transmission method and the equipment that provide a kind of multiple signals, is intended to the transmission carrying out multiple signals that is simple, low cost.
For achieving the above object, the transmission method of a kind of multiple signals provided by the invention, said method comprising the steps of:
Multiplexing end carries out convergent-divergent process by needing the multichannel input signal of transmission, generates the image block corresponding with each road input signal, and obtains output image according to the multiple image blocks generated;
Described output image is sent to demultiplexing end by a transmission channel by described multiplexing end;
Described demultiplexing end extracts the image block in described output image, and obtains the input signal corresponding with described image block.
Preferably, described multiplexing end carries out convergent-divergent process by needing the multichannel input signal of transmission, generates the image block corresponding with each road input signal, and comprises according to the step of the multiple image blocks acquisition output images generated:
Described multiplexing end is converted to corresponding multiply digital signals by needing the multichannel input signal of transmission;
The setting size obtaining image block is calculated according to the way of described digital signal and the resolution of transmission channel;
Utilize image sealer multiply digital signals to be carried out the image block that convergent-divergent process is converted to multiple setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
Preferably, multiply digital signals is carried out the image block that convergent-divergent process is converted to multiple setting size by the described image sealer that utilizes, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, the step forming output image comprises:
Utilize the image sealer corresponding with each railway digital signal that each railway digital signal is carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image; Or
A diverter switch is utilized to select in multiply digital signals, and each the railway digital signal selected is sent to an image sealer, utilize described image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image; Or
Multiple diverter switch is utilized to select in multiply digital signals, and each the railway digital signal selected is sent to the image sealer corresponding with described diverter switch, utilize corresponding image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
Preferably, described default storage rule is image block corresponding for each railway digital signal is stored to the corresponding address of described preset buffer memory successively by the sequencing of multichannel input signal or according to preset address mapping table, image block corresponding for each railway digital signal is stored to address corresponding in described preset address mapping table, wherein, the corresponding relation between the address in each the road input signal preset and described preset buffer memory is stored in described preset address mapping table.
Preferably, described demultiplexing end extracts the image block in described output image, and the step obtaining the input signal corresponding with described image block comprises:
Described demultiplexing end sets up the decoding buffer memory identical with described preset buffer memory size, and the output image received by described transmission channel is stored in described decoding buffer memory, from described output image, extract image block according to described default storage rule, and resolve the acquisition input signal corresponding with described image block.
In addition, for achieving the above object, the present invention also provides a kind of transmission equipment of multiple signals, and the transmission equipment of described multiple signals comprises multiplexing end and demultiplexing end, wherein,
Described multiplexing end carries out convergent-divergent process by needing the multichannel input signal of transmission, generates the image block corresponding with each road input signal, and obtains output image according to the multiple image blocks generated; Described output image is sent to described demultiplexing end by a transmission channel;
Described demultiplexing end extracts the image block in described output image, and obtains the input signal corresponding with described image block.
Preferably, described multiplexing end also for:
Corresponding multiply digital signals is converted to by needing the multichannel input signal of transmission; The setting size obtaining image block is calculated according to the way of described digital signal and the resolution of transmission channel; Utilize image sealer multiply digital signals to be carried out the image block that convergent-divergent process is converted to multiple setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
Preferably, described multiplexing end also for:
Utilize the image sealer corresponding with each railway digital signal that each railway digital signal is carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image; Or
A diverter switch is utilized to select in multiply digital signals, and each the railway digital signal selected is sent to an image sealer, utilize described image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image; Or
Multiple diverter switch is utilized to select in multiply digital signals, and each the railway digital signal selected is sent to the image sealer corresponding with described diverter switch, utilize corresponding image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
Preferably, described default storage rule is image block corresponding for each railway digital signal is stored to the corresponding address of described preset buffer memory successively by the sequencing of multichannel input signal or according to preset address mapping table, image block corresponding for each railway digital signal is stored to address corresponding in described preset address mapping table, wherein, the corresponding relation between the address in each the road input signal preset and described preset buffer memory is stored in described preset address mapping table.
Preferably, described demultiplexing end also for:
Set up the decoding buffer memory identical with described preset buffer memory size, and the output image received by described transmission channel is stored in described decoding buffer memory, from described output image, extract image block according to described default storage rule, and resolve the acquisition input signal corresponding with described image block.
The transmission method of a kind of multiple signals that the present invention proposes and equipment, the multichannel input signal of needs transmission is carried out the output image that convergent-divergent process formation is made up of multiple image block by multiplexing end, and this output image is sent to demultiplexing end by a transmission channel, can be carried out resolving after receiving this output image by transmission channel by demultiplexing end and obtain input signal corresponding to image block, image block and transmission is formed to the multichannel input signal of transmission will be needed to carry out convergent-divergent process owing to only need pass through, extract the operation of this image block, without the need at multiplexing end, demultiplexing end uses special codec chip can carry out the transmission of multichannel input signal, very simple, and reduce the transmission cost of multichannel input signal.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of transmission method one embodiment of multiple signals of the present invention;
Fig. 2 is the structural representation of transmission equipment one embodiment of multiple signals of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of transmission method of multiple signals.
With reference to the schematic flow sheet that Fig. 1, Fig. 1 are transmission method one embodiment of multiple signals of the present invention.
In one embodiment, the transmission method of these multiple signals comprises:
Step S10, multiplexing end carries out convergent-divergent process by needing the multichannel input signal of transmission, generates the image block corresponding with each road input signal, and obtains output image according to the multiple image blocks generated;
In the present embodiment, need the multichannel input signal of transmission can comprise the signal of various form, as vision signal, audio signal etc., at this, only to need the multichannel input signal transmitted to be described for vision signal, certainly, also not limiting the multichannel input signal needing transmission is the signal of extended formatting.The multichannel input signal of transmission is needed to comprise the vision signals such as CVBS, VGA, DVI, HDMI, DP and SDI.First, convergent-divergent process is carried out by needing the multichannel input signal of transmission, image sealer (scaler) can being utilized in the present embodiment to carry out convergent-divergent process to needing the multichannel input signal of transmission, certainly also not limiting and utilizing other zoom tools to carry out convergent-divergent process to needing the multichannel input signal of transmission.After carrying out convergent-divergent process by needing the multichannel input signal of transmission, the image block corresponding with each road input signal can be generated, the content information of input signal is comprised in this image block, the multiple image blocks generated are carried out splicing acquisition one output image, this connecting method can be spliced to form output image by the order generated to multiple image block, also can be, by the order of setting, output image is spliced to form to multiple image block, at this, be not construed as limiting.
Step S20, described output image is sent to demultiplexing end by a transmission channel by described multiplexing end;
Carry out convergent-divergent process by needing the multichannel input signal of transmission and generate multiple image block and after being spliced to form output image, the output image of formation can be sent to demultiplexing end by a transmission channel by described multiplexing end, wherein, when the multichannel input signal needing transmission is vision signal, according to the on-the-spot application demand of transmission, this transmission channel can be the transmission channels such as network, SDI, optical fiber, HDMI, certainly, does not also limit the transmission channel that this transmission channel is other types.
Step S30, described demultiplexing end extracts the image block in described output image, and obtains the input signal corresponding with described image block.
After described demultiplexing end receives the output image of described multiplexing end transmission by transmission channel, the image block in described output image can be extracted, and from the image block extracted, resolve the acquisition input signal corresponding with described image block, to obtain the multichannel input signal of multiplexing end transmission, realize the transmission of multichannel input signal between multiplexing end and demultiplexing end.
In the present embodiment, the multichannel input signal of needs transmission is carried out the output image that convergent-divergent process formation is made up of multiple image block by multiplexing end, and this output image is sent to demultiplexing end by a transmission channel, can be carried out resolving after receiving this output image by transmission channel by demultiplexing end and obtain input signal corresponding to image block, image block and transmission is formed to the multichannel input signal of transmission will be needed to carry out convergent-divergent process owing to only need pass through, extract the operation of this image block, without the need at multiplexing end, demultiplexing end uses special codec chip can carry out the transmission of multichannel input signal, very simple, and reduce the transmission cost of multichannel input signal.
Further, in other embodiments, above-mentioned steps S10 can comprise:
Described multiplexing end is converted to corresponding multiply digital signals by needing the multichannel input signal of transmission; The setting size obtaining image block is calculated according to the way of described digital signal and the resolution of transmission channel; Utilize image sealer multiply digital signals to be carried out the image block that convergent-divergent process is converted to multiple setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
In the present embodiment, at multiplexing end by when needing the multichannel input signal of transmission to carry out convergent-divergent process, first be converted to corresponding multiply digital signals by described multiplexing end by needing the multichannel input signal of transmission, as by ADC or decoder various incoming video signal is converted to level form and the unified digital signal of color space, like this, follow-up zoom operations is conducive to.The setting size obtaining image block is calculated according to the way of described digital signal and the resolution of transmission channel, the image block setting size that when also namely needing the input signal way transmitted and the resolution sizes of transmission channel to calculate to obtain to transmit multichannel input signal in transmission channel according to the way of described digital signal, each road input signal is corresponding simultaneously, the image block setting size calculated can ensure transmit the image block that in multichannel input signal, each road input signal is corresponding in transmission channel simultaneously, in the present embodiment, be preferably the image block that in multichannel input signal, each road input signal is corresponding and be formed objects, like this, be convenient to computed image block size and transmission, certainly, the image block that in multichannel input signal, each road input signal is corresponding also can be set to different size according to the needs in practical application, at this, be not construed as limiting.After calculating the setting size obtaining image block, the parameter acquiring such as the position also can selected according to image procossing is dark deposit the byte number that each pixel needs, the image block that can obtain each setting size according to the setting size of this byte number and image block needs the spatial cache taken, and then obtain the spatial cache sum that image block that in multichannel input signal, each road input signal is corresponding needs to take, a preset buffer memory is set up at multiplexing end, the memory space of this preset buffer memory is more than or equal to the spatial cache sum that image block needs corresponding to each road input signal in multichannel input signal take, like this, this preset buffer memory can be made can to store the image block that in lower multichannel input signal, each road input signal is corresponding.
In the setting size of calculating acquisition image block and after multiplexing end sets up preset buffer memory, image sealer can be utilized multiply digital signals to be carried out the image block that convergent-divergent process is converted to multiple setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
Particularly, utilize image sealer multiply digital signals carried out convergent-divergent process be converted to the image block of multiple setting size time, in one embodiment, can utilize the image sealer corresponding with each railway digital signal that each railway digital signal is carried out convergent-divergent process and be converted to the image block setting size, namely each railway digital signal is all to there being an image sealer, each railway digital signal then in various input signal source can carry out the image block that convergent-divergent process is converted to multiple setting size simultaneously, and then with the fastest speed, image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image, to carry out the subsequent operations such as transmission, because each the railway digital signal in various input signal source can carry out convergent-divergent process simultaneously, therefore, signal refresh rate is the highest, Consumer's Experience is better, but cost is slightly high.
In another embodiment, a diverter switch can be utilized to select in multiply digital signals, and each the railway digital signal selected is sent to an image sealer, utilize described image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, the i.e. corresponding diverter switch of multiply digital signals, the corresponding image sealer of this diverter switch simultaneously, like this, utilize a diverter switch in multiply digital signals, carry out selection one railway digital signal, again the railway digital signal selected is sent to image sealer and carries out convergent-divergent process, in multiply digital signals, a railway digital signal is selected to carry out convergent-divergent process owing to can only utilize a diverter switch at every turn, therefore, refresh rate is lower slightly, but the convergent-divergent process of multiply digital signals operation only needs a diverter switch and an image sealer to complete, significantly reduce cost.
In another execution mode, multiple diverter switch can be utilized to select in multiply digital signals, and each the railway digital signal selected is sent to the image sealer corresponding with described diverter switch, utilize corresponding image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, the i.e. corresponding multiple diverter switch of multiply digital signals, the corresponding image sealer of each diverter switch simultaneously, like this, utilize multiple diverter switch can select multiply digital signals in multiply digital signals simultaneously, again the multiply digital signals of selection is sent to the multiple image sealer corresponding with multiple diverter switch and carries out convergent-divergent process, in multiply digital signals, select multiply digital signals to carry out convergent-divergent process owing to can utilize multiple diverter switch at every turn simultaneously, and without the need to each railway digital signal all to all should be had to change switch and image sealer, therefore, can while ensureing higher refresh rate, reduce costs.
Further, image block corresponding for each railway digital signal is being stored in preset buffer memory by default storage rule, when forming output image, in one embodiment, this default storage rule can for being stored to the corresponding address of described preset buffer memory successively by the sequencing of multichannel input signal by image block corresponding for each railway digital signal, namely from the initial address of described preset buffer memory, store image block corresponding to each railway digital signal successively by the sequencing of multichannel input signal and form output image, like this, when output image is transferred to demultiplexing end by multiplexing end, described demultiplexing end can set up the decoding buffer memory identical with described preset buffer memory size, and the output image received by described transmission channel is stored in described decoding buffer memory, from described output image, image block corresponding to each railway digital signal is extracted successively according to initial address, can resolve and obtain the digital signal corresponding with each image block, and then obtain corresponding input signal.
In another embodiment, this default storage rule can also be, according to preset address mapping table, image block corresponding for each railway digital signal is stored to address corresponding in described preset address mapping table, wherein, the corresponding relation between the address in each the road input signal preset and described preset buffer memory is stored in described preset address mapping table.Namely the image block that each railway digital signal is corresponding is not store from the initial address of described preset buffer memory successively in order, but can according to practical application need preset the corresponding relation between the address in each road input signal and described preset buffer memory, and be recorded in preset address mapping table, like this, when image block corresponding for each railway digital signal is stored, according to preset address mapping table, image block corresponding for each railway digital signal can be stored to address corresponding in described preset address mapping table, more flexibly.And when output image is transferred to demultiplexing end by multiplexing end, described demultiplexing end can set up the decoding buffer memory identical with described preset buffer memory size, and the output image received by described transmission channel is stored in described decoding buffer memory, same, demultiplexing end also can extract image block corresponding to each railway digital signal according to preset address mapping table from described output image, can resolve and obtain the digital signal corresponding with each image block, and then obtain corresponding input signal.
The present invention further provides a kind of transmission equipment of multiple signals.
With reference to the structural representation that Fig. 2, Fig. 2 are transmission equipment one embodiment of multiple signals of the present invention.
In one embodiment, the transmission equipment of these multiple signals comprises multiplexing end 1 and demultiplexing end 2, wherein,
Multiplexing end 1 carries out convergent-divergent process by needing the multichannel input signal of transmission, generates the image block corresponding with each road input signal, and obtains output image according to the multiple image blocks generated; Described output image is sent to demultiplexing end 2 by a transmission channel;
Demultiplexing end 2 extracts the image block in described output image, and obtains the input signal corresponding with described image block.
It should be noted that, in the present embodiment, multiplexing end 1 and demultiplexing end 2 can be independent product facility respectively, also can be the transmission equipments that multiplexing end 1 and demultiplexing end 2 are combined to form multiple signals, at this, be not construed as limiting.
In the present embodiment, need the multichannel input signal of transmission can comprise the signal of various form, as vision signal, audio signal etc., at this, only to need the multichannel input signal transmitted to be described for vision signal, certainly, also not limiting the multichannel input signal needing transmission is the signal of extended formatting.The multichannel input signal of transmission is needed to comprise the vision signals such as CVBS, VGA, DVI, HDMI, DP and SDI.First, multiplexing end 1 carries out convergent-divergent process by needing the multichannel input signal of transmission, image sealer (scaler) can being utilized in the present embodiment to carry out convergent-divergent process to needing the multichannel input signal of transmission, certainly also not limiting and utilizing other zoom tools to carry out convergent-divergent process to needing the multichannel input signal of transmission.After carrying out convergent-divergent process by needing the multichannel input signal of transmission, the image block corresponding with each road input signal can be generated, the content information of input signal is comprised in this image block, the multiple image blocks generated are carried out splicing acquisition one output image, this connecting method can be spliced to form output image by the order generated to multiple image block, also can be, by the order of setting, output image is spliced to form to multiple image block, at this, be not construed as limiting.
Carry out convergent-divergent process by needing the multichannel input signal of transmission and generate multiple image block and after being spliced to form output image, the output image of formation can be sent to demultiplexing end 2 by a transmission channel by multiplexing end 1, wherein, when the multichannel input signal needing transmission is vision signal, according to the on-the-spot application demand of transmission, this transmission channel can be the transmission channels such as network, SDI, optical fiber, HDMI, certainly, does not also limit the transmission channel that this transmission channel is other types.
After demultiplexing end 2 receives the output image of multiplexing end 1 transmission by transmission channel, the image block in described output image can be extracted, and from the image block extracted, resolve the acquisition input signal corresponding with described image block, to obtain the multichannel input signal of multiplexing end 1 transmission, realize the transmission of multichannel input signal between multiplexing end 1 and demultiplexing end 2.
In the present embodiment, the multichannel input signal of needs transmission is carried out the output image that convergent-divergent process formation is made up of multiple image block by multiplexing end 1, and this output image is sent to demultiplexing end 2 by a transmission channel, can be carried out resolving after receiving this output image by transmission channel by demultiplexing end 2 and obtain input signal corresponding to image block, image block and transmission is formed to the multichannel input signal of transmission will be needed to carry out convergent-divergent process owing to only need pass through, extract the operation of this image block, without the need at multiplexing end 1, demultiplexing end 2 uses special codec chip can carry out the transmission of multichannel input signal, very simple, and reduce the transmission cost of multichannel input signal.
Further, in other embodiments, multiplexing end 1 may be used for:
Corresponding multiply digital signals is converted to by needing the multichannel input signal of transmission; The setting size obtaining image block is calculated according to the way of described digital signal and the resolution of transmission channel; Utilize image sealer multiply digital signals to be carried out the image block that convergent-divergent process is converted to multiple setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
In the present embodiment, at multiplexing end 1 by when needing the multichannel input signal of transmission to carry out convergent-divergent process, first be converted to corresponding multiply digital signals by multiplexing end 1 by needing the multichannel input signal of transmission, as by ADC or decoder various incoming video signal is converted to level form and the unified digital signal of color space, like this, follow-up zoom operations is conducive to.The setting size obtaining image block is calculated according to the way of described digital signal and the resolution of transmission channel, the image block setting size that when also namely needing the input signal way transmitted and the resolution sizes of transmission channel to calculate to obtain to transmit multichannel input signal in transmission channel according to the way of described digital signal, each road input signal is corresponding simultaneously, the image block setting size calculated can ensure transmit the image block that in multichannel input signal, each road input signal is corresponding in transmission channel simultaneously, in the present embodiment, be preferably the image block that in multichannel input signal, each road input signal is corresponding and be formed objects, like this, be convenient to computed image block size and transmission, certainly, the image block that in multichannel input signal, each road input signal is corresponding also can be set to different size according to the needs in practical application, at this, be not construed as limiting.After calculating the setting size obtaining image block, the parameter acquiring such as the position also can selected according to image procossing is dark deposit the byte number that each pixel needs, the image block that can obtain each setting size according to the setting size of this byte number and image block needs the spatial cache taken, and then obtain the spatial cache sum that image block that in multichannel input signal, each road input signal is corresponding needs to take, a preset buffer memory is set up at multiplexing end 1, the memory space of this preset buffer memory is more than or equal to the spatial cache sum that image block needs corresponding to each road input signal in multichannel input signal take, like this, this preset buffer memory can be made can to store the image block that in lower multichannel input signal, each road input signal is corresponding.
In the setting size of calculating acquisition image block and after multiplexing end 1 sets up preset buffer memory, image sealer can be utilized multiply digital signals to be carried out the image block that convergent-divergent process is converted to multiple setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
Particularly, utilize image sealer multiply digital signals carried out convergent-divergent process be converted to the image block of multiple setting size time, in one embodiment, can utilize the image sealer corresponding with each railway digital signal that each railway digital signal is carried out convergent-divergent process and be converted to the image block setting size, namely each railway digital signal is all to there being an image sealer, each railway digital signal then in various input signal source can carry out the image block that convergent-divergent process is converted to multiple setting size simultaneously, and then with the fastest speed, image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image, to carry out the subsequent operations such as transmission, because each the railway digital signal in various input signal source can carry out convergent-divergent process simultaneously, therefore, signal refresh rate is the highest, Consumer's Experience is better, but cost is slightly high.
In another embodiment, a diverter switch can be utilized to select in multiply digital signals, and each the railway digital signal selected is sent to an image sealer, utilize described image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, the i.e. corresponding diverter switch of multiply digital signals, the corresponding image sealer of this diverter switch simultaneously, like this, utilize a diverter switch in multiply digital signals, carry out selection one railway digital signal, again the railway digital signal selected is sent to image sealer and carries out convergent-divergent process, in multiply digital signals, a railway digital signal is selected to carry out convergent-divergent process owing to can only utilize a diverter switch at every turn, therefore, refresh rate is lower slightly, but the convergent-divergent process of multiply digital signals operation only needs a diverter switch and an image sealer to complete, significantly reduce cost.
In another execution mode, multiple diverter switch can be utilized to select in multiply digital signals, and each the railway digital signal selected is sent to the image sealer corresponding with described diverter switch, utilize corresponding image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, the i.e. corresponding multiple diverter switch of multiply digital signals, the corresponding image sealer of each diverter switch simultaneously, like this, utilize multiple diverter switch can select multiply digital signals in multiply digital signals simultaneously, again the multiply digital signals of selection is sent to the multiple image sealer corresponding with multiple diverter switch and carries out convergent-divergent process, in multiply digital signals, select multiply digital signals to carry out convergent-divergent process owing to can utilize multiple diverter switch at every turn simultaneously, and without the need to each railway digital signal all to all should be had to change switch and image sealer, therefore, can while ensureing higher refresh rate, reduce costs.
Further, image block corresponding for each railway digital signal is being stored in preset buffer memory by default storage rule, when forming output image, in one embodiment, this default storage rule can for being stored to the corresponding address of described preset buffer memory successively by the sequencing of multichannel input signal by image block corresponding for each railway digital signal, namely from the initial address of described preset buffer memory, store image block corresponding to each railway digital signal successively by the sequencing of multichannel input signal and form output image, like this, when output image is transferred to demultiplexing end 2 by multiplexing end 1, demultiplexing end 2 can set up the decoding buffer memory identical with described preset buffer memory size, and the output image received by described transmission channel is stored in described decoding buffer memory, from described output image, image block corresponding to each railway digital signal is extracted successively according to initial address, can resolve and obtain the digital signal corresponding with each image block, and then obtain corresponding input signal.
In another embodiment, this default storage rule can also be, according to preset address mapping table, image block corresponding for each railway digital signal is stored to address corresponding in described preset address mapping table, wherein, the corresponding relation between the address in each the road input signal preset and described preset buffer memory is stored in described preset address mapping table.Namely the image block that each railway digital signal is corresponding is not store from the initial address of described preset buffer memory successively in order, but can according to practical application need preset the corresponding relation between the address in each road input signal and described preset buffer memory, and be recorded in preset address mapping table, like this, when image block corresponding for each railway digital signal is stored, according to preset address mapping table, image block corresponding for each railway digital signal can be stored to address corresponding in described preset address mapping table, more flexibly.And when output image is transferred to demultiplexing end 2 by multiplexing end 1, demultiplexing end 2 can set up the decoding buffer memory identical with described preset buffer memory size, and the output image received by described transmission channel is stored in described decoding buffer memory, same, demultiplexing end 2 also can extract image block corresponding to each railway digital signal according to preset address mapping table from described output image, can resolve and obtain the digital signal corresponding with each image block, and then obtain corresponding input signal.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a transmission method for multiple signals, is characterized in that, said method comprising the steps of:
Multiplexing end carries out convergent-divergent process by needing the multichannel input signal of transmission, generates the image block corresponding with each road input signal, and obtains output image according to the multiple image blocks generated;
Described output image is sent to demultiplexing end by a transmission channel by described multiplexing end;
Described demultiplexing end extracts the image block in described output image, and obtains the input signal corresponding with described image block.
2. the transmission method of multiple signals as claimed in claim 1, it is characterized in that, described multiplexing end carries out convergent-divergent process by needing the multichannel input signal of transmission, generates the image block corresponding with each road input signal, and comprises according to the step of the multiple image blocks acquisition output images generated:
Described multiplexing end is converted to corresponding multiply digital signals by needing the multichannel input signal of transmission;
The setting size obtaining image block is calculated according to the way of described digital signal and the resolution of transmission channel;
Utilize image sealer multiply digital signals to be carried out the image block that convergent-divergent process is converted to multiple setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
3. the transmission method of multiple signals as claimed in claim 2, it is characterized in that, multiply digital signals is carried out the image block that convergent-divergent process is converted to multiple setting size by the described image sealer that utilizes, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, the step forming output image comprises:
Utilize the image sealer corresponding with each railway digital signal that each railway digital signal is carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image; Or
A diverter switch is utilized to select in multiply digital signals, and each the railway digital signal selected is sent to an image sealer, utilize described image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image; Or
Multiple diverter switch is utilized to select in multiply digital signals, and each the railway digital signal selected is sent to the image sealer corresponding with described diverter switch, utilize corresponding image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
4. the transmission method of multiple signals as claimed in claim 2 or claim 3, it is characterized in that, described default storage rule is image block corresponding for each railway digital signal is stored to the corresponding address of described preset buffer memory successively by the sequencing of multichannel input signal or according to preset address mapping table, image block corresponding for each railway digital signal is stored to address corresponding in described preset address mapping table, wherein, the corresponding relation between the address in each the road input signal preset and described preset buffer memory is stored in described preset address mapping table.
5. the transmission method of multiple signals as claimed in claim 2 or claim 3, it is characterized in that, described demultiplexing end extracts the image block in described output image, and the step obtaining the input signal corresponding with described image block comprises:
Described demultiplexing end sets up the decoding buffer memory identical with described preset buffer memory size, and the output image received by described transmission channel is stored in described decoding buffer memory, from described output image, extract image block according to described default storage rule, and resolve the acquisition input signal corresponding with described image block.
6. a transmission equipment for multiple signals, is characterized in that, the transmission equipment of described multiple signals comprises multiplexing end and demultiplexing end, wherein,
Described multiplexing end carries out convergent-divergent process by needing the multichannel input signal of transmission, generates the image block corresponding with each road input signal, and obtains output image according to the multiple image blocks generated; Described output image is sent to described demultiplexing end by a transmission channel;
Described demultiplexing end extracts the image block in described output image, and obtains the input signal corresponding with described image block.
7. the transmission equipment of multiple signals as claimed in claim 6, is characterized in that, described multiplexing end also for:
Corresponding multiply digital signals is converted to by needing the multichannel input signal of transmission; The setting size obtaining image block is calculated according to the way of described digital signal and the resolution of transmission channel; Utilize image sealer multiply digital signals to be carried out the image block that convergent-divergent process is converted to multiple setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
8. the transmission equipment of multiple signals as claimed in claim 7, is characterized in that, described multiplexing end also for:
Utilize the image sealer corresponding with each railway digital signal that each railway digital signal is carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image; Or
A diverter switch is utilized to select in multiply digital signals, and each the railway digital signal selected is sent to an image sealer, utilize described image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image; Or
Multiple diverter switch is utilized to select in multiply digital signals, and each the railway digital signal selected is sent to the image sealer corresponding with described diverter switch, utilize corresponding image sealer each railway digital signal to be carried out convergent-divergent process and be converted to the image block setting size, and image block corresponding for each railway digital signal is stored in preset buffer memory by default storage rule, form output image.
9. the transmission equipment of multiple signals as claimed in claim 7 or 8, it is characterized in that, described default storage rule is image block corresponding for each railway digital signal is stored to the corresponding address of described preset buffer memory successively by the sequencing of multichannel input signal or according to preset address mapping table, image block corresponding for each railway digital signal is stored to address corresponding in described preset address mapping table, wherein, the corresponding relation between the address in each the road input signal preset and described preset buffer memory is stored in described preset address mapping table.
10. the transmission equipment of as claimed in claim 7 or 8 multiple signals, is characterized in that, described demultiplexing end also for:
Set up the decoding buffer memory identical with described preset buffer memory size, and the output image received by described transmission channel is stored in described decoding buffer memory, from described output image, extract image block according to described default storage rule, and resolve the acquisition input signal corresponding with described image block.
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