CN103036981B - A kind of remote data transmission Apparatus and method for - Google Patents
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Abstract
The present invention relates to network data communication technical field, it discloses a kind of remote data transmission Apparatus and method for, the method is included in be set up after Long-distance Control is connected with main control end, the desktop background of controlled end is shown as monochrome; Obtain display interface image; Display interface image is divided at least two blocks, block is defined as image waiting for transmission respectively; If be all that desktop background sends monochromatic corresponding colour to main control end so that main control end shows current block according to colour in current block; If color category is at least three kinds, then flatness is judged; According to judged result determination compress mode; If color category is two kinds, then respectively index is carried out to two kinds of colors; With index value, current block is encoded; Main control end is according to coding result, and the corresponding relation of index value and color colour, display current block.By the present invention, bandwidth shared when transmitting controlled end background picture can be reduced, improve the fluency of remote control operation.
Description
Technical field
The present invention relates to network data communication technical field, be specifically related to a kind of remote data transmission Apparatus and method for.
Background technology
Long-distance Control, refer to the administrative staff or system support staff etc. of the computer equipment computer equipment by the long-range controlled terminal of Internet connectivity, the desktop environment of controlled terminal computer equipment is shown on the computer equipment of administrative staff or assistance personnel etc., by local computer device, the work such as system configuration, software installation procedure, failture evacuation is carried out to long-range controlled terminal computer equipment.
The related work of Long-distance Control needs just can be carried out by network, be positioned at the issuing side that local computer equipment is operational order, be called main control end, and long-range controlled terminal computer equipment can be called controlled end, controlled end receives and performs operational order that main control end sends and performed at controlled end.Main control end and controlled end can be the computer equipments being arranged in same local area network (LAN), also can be two or the multi-section computer equipment being in any position that are connected into the Internet.Realize the control of main control end to controlled end, usual needs install client-side program in the computer equipment of main control end, build-in services device end program in the computer equipment of controlled end, during use, the client-side program of main control end sends signal to the server of controlled end, set up the link of a remote service, then by the link of this remote service, its desktop environment (comprising the information such as the icon that the background information of desktop and desktop show) is transmitted and is shown to main control end by controlled end, main control end sends the corresponding remote control command of various remote control function, the computer equipment controlling controlled end performs remote control command, when the display interface of controlled end changes, also need the interface information after by renewal to be sent to main control end and require that it carries out corresponding frame updating display, move in circles with this, thus complete the relevant work of various Long-distance Control.
In prior art when transmitting the desktop environment information of controlled end to main control end, the normally direct desktop to controlled end carries out sectional drawing, then the picture be truncated to is combined into data message and is sent to main control end.But need larger bandwidth when carrying out the transmission of data with the form of picture, due to the restriction of the network bandwidth of main control end or actual uses of controlled end, remote control operation does not usually reach or is difficult to level off to the perfect condition of smoothness operation.
Summary of the invention
In view of the above problems, the present invention is proposed to provide a kind of overcoming the problems referred to above or the remote data transmission equipment solved the problem at least in part and corresponding remote data transmission method.
According to one aspect of the present invention, provide
A kind of remote data transmission equipment, comprising:
Setting unit, is suitable for, setting up after Long-distance Control is connected with main control end, the desktop background of controlled end being shown as monochrome;
Placement unit, the display interface be suitable for based on described controlled end carries out image-capture, obtains display interface image;
Blocking unit, is suitable for described display interface image to be divided at least two blocks, described block is defined as image waiting for transmission respectively;
Data transfer unit, if be suitable for being all desktop background in current block, then sends described monochromatic corresponding colour to described main control end, so that main control end is according to described colour display current block;
Flatness detecting unit, if the color category being suitable for comprising in current block is at least three kinds, then judges the flatness of described block;
Compression unit, is suitable for the compress mode determining described current block according to judged result, and compresses the corresponding view data of described block with described compress mode;
Packed data delivery unit, is suitable for the view data after by compression and sends described main control end to, so that main control end shows described current block according to the view data after described compression;
Indexing units, if the color category being suitable for comprising in current block is two kinds, then carries out index to two kinds of colors respectively;
Encoding performing unit, is suitable for encoding to described current block with the index value that two kinds of colors are corresponding respectively;
Coding delivery unit, be suitable for coding result, and the corresponding relation of described index value and color colour sends described main control end to; So that main control end is according to described coding result, and the corresponding relation of described index value and color colour, show described current block.
Alternatively, also comprise:
Recovery unit, is suitable for, according to the instruction of main control end or at preset time point, the desktop background of controlled end being reverted to reset condition.
Alternatively, described setting unit comprises:
Acquisition of information subelement, is suitable for, setting up after Long-distance Control is connected with main control end, obtaining the desktop background information of controlled end, and being saved in the registry file of specifying by described desktop background information;
Subelement is set, is suitable for, according to preset color value, the desktop background of described controlled end is set to monochrome;
Described recovery unit comprises:
Information reading sub-unit, is suitable at preset time point, reads the desktop background information of preserving in described registry file of specifying;
Recover subelement, arrange for the desktop background according to read desktop background Information recovering controlled end.
Alternatively, described desktop background information comprises desktop background picture and the display mode thereof of controlled end use, and described display mode comprises stretching, placed in the middle or tiling, and described acquisition of information subelement comprises:
The first system function call subelement, is suitable for the application programming interface api function provided by call operation system, obtains the path of the desktop background picture that controlled end uses;
Registration table reads subelement, is suitable for the display mode being obtained controlled end desktop background picture by the registration table of reading system;
Described recovery subelement comprises:
Registry Modifications subelement, is suitable for the registry information according to read desktop background information amendment system;
Second system function call subelement, is suitable for notifying that operating system refreshes the desktop background of controlled end based on amended registration table key assignments by the api function of call operation system.
Alternatively, also comprise:
Information deletion unit, is suitable for, after the desktop background of controlled end is arranged, deleting the desktop background information of preserving in described registry file of specifying;
Described information reading sub-unit is specifically suitable for:
Long-distance Control connect disconnect time, remote control program exit time or remote control program restart time, read described registry file of specifying, if the registry file of specifying described is not for empty, the desktop background information of wherein preserving described in then reading, and trigger described recovery subelement and arrange according to the desktop background of read desktop background Information recovering controlled end.
Alternatively, also comprise:
Monitoring unit, is suitable for the display interface according to prefixed time interval intermittent scanning controlled end;
Updating block, be suitable for monitoring the color change comprised in one or more described block in each scanning, by the block coordinate changed, and the color index value after change, send to main control end, so that main control end is according to described coordinate and color index value, the corresponding relation of described index value and color colour, one or more blocks that display is corresponding.
Alternatively, also comprise:
Tip element, is suitable for, when the desktop background of controlled end is shown as monochrome, showing corresponding information.
According to a further aspect in the invention, provide a kind of remote data transmission method, comprising:
Setting up after Long-distance Control is connected with main control end, the desktop background of controlled end is shown as monochrome;
Display interface based on described controlled end carries out image-capture, obtains display interface image;
Described display interface image is divided at least two blocks, described block is defined as image waiting for transmission respectively;
If in current block be all desktop background, then send described monochromatic corresponding colour to described main control end, so that main control end is according to described colour display current block;
If the color category comprised in current block is at least three kinds, then the flatness of described block is judged;
The compress mode to described current block is determined according to judged result;
With described compress mode, the corresponding view data of described block is compressed;
Send the view data after compression to described main control end, so that main control end shows described current block according to the view data after described compression;
If the color category comprised in current block is two kinds, then respectively index is carried out to two kinds of colors;
With the index value that two kinds of colors are corresponding respectively, described current block is encoded;
By coding result, and the corresponding relation of described index value and color colour sends described main control end to; So that main control end is according to described coding result, and the corresponding relation of described index value and color colour, show described current block.
Alternatively, also comprise:
According to the instruction of main control end or at preset time point, the desktop background of controlled end is reverted to reset condition.
Alternatively, describedly setting up after Long-distance Control is connected with main control end, the desktop background of controlled end be shown as monochrome and comprise:
Setting up after Long-distance Control is connected with main control end, obtaining the desktop background information of controlled end, and described desktop background information is saved in the registry file of specifying;
According to preset color value, the desktop background of described controlled end is set to monochrome;
Described at preset time point, the desktop background of controlled end is reverted to original shape and comprises:
At preset time point, read the desktop background information of preserving in described registry file of specifying;
Desktop background according to read desktop background Information recovering controlled end is arranged.
Alternatively, described desktop background information comprises desktop background picture and the display mode thereof of controlled end use, and described display mode comprises stretching, placed in the middle or tiling, and the desktop background information of described acquisition controlled end comprises:
The application programming interface api function provided by call operation system, obtains the path of the desktop background picture that controlled end uses;
The display mode of controlled end desktop background picture is obtained by the registration table of reading system;
The described desktop background according to read desktop background Information recovering controlled end arranges and comprises:
According to the registry information of read desktop background information amendment system;
Notify that operating system refreshes the desktop background of controlled end based on amended registration table key assignments by the api function of call operation system.
Alternatively, also comprise:
After the desktop background of controlled end is arranged, delete the desktop background information of preserving in described registry file of specifying;
Described at preset time point, read the desktop background letter preserved in described registry file of specifying and comprise:
Long-distance Control connect disconnect time, remote control program exit time or remote control program restart time, read described registry file of specifying, if the registry file of specifying described is not for empty, the desktop background information of wherein preserving described in then reading, and triggering is arranged according to the desktop background of read desktop background Information recovering controlled end.
Alternatively, also comprise:
According to the display interface of prefixed time interval intermittent scanning controlled end;
The color change comprised in one or more described block in each scanning of monitoring, by the block coordinate changed, and the color index value after change, send to main control end, so that main control end is according to described coordinate and color index value, the corresponding relation of described index value and color colour, one or more blocks that display is corresponding.
Alternatively, also comprise:
When the desktop background of controlled end is shown as monochrome, show corresponding information.
According to remote data transmission equipment of the present invention, can set up after Long-distance Control is connected in controlled end and main control end by setting unit, the desktop background of controlled end is shown as monochrome; After determining image waiting for transmission by placement unit and blocking unit, if in current block be all desktop background, then directly send monochromatic corresponding colour to main control end by data transfer unit, thus main control end can be made according to the desktop background of the colour display controlled end transmitted, the desktop background picture that controlled end transmits to main control end is substituted by the colour that data volume is relatively little, the data volume transmitted from controlled end to main control end in remote control process can be reduced.And if that comprises the color of more than three kinds in current block, then can be judged the flatness of image in block by flatness detecting unit, and select suitable image compression mode accordingly, after compression, be sent to main control end by packed data delivery unit.Solve thus in remote control process and transmit the problem that controlled end background picture takies massive band width, achieve bandwidth shared when reducing transmission controlled end background picture, improve the beneficial effect of the fluency of remote control operation.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification, and can become apparent, below especially exemplified by the specific embodiment of the present invention to allow above and other objects of the present invention, feature and advantage.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Fig. 1 shows the flow chart of method according to an embodiment of the invention;
Fig. 2 shows the schematic diagram of equipment according to an embodiment of the invention;
Fig. 3 shows the schematic diagram of equipment in accordance with another embodiment of the present invention; And,
Fig. 4 shows the schematic diagram of the equipment according to another embodiment of the present invention.
Embodiment
Below with reference to accompanying drawings exemplary embodiment of the present disclosure is described in more detail.Although show exemplary embodiment of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the embodiment set forth here.On the contrary, provide these embodiments to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
See Fig. 1, embodiments provide a kind of remote data transmission method, the method can comprise the following steps:
S101: setting up after Long-distance Control is connected with main control end, the desktop background of controlled end is shown as monochrome;
In embodiments of the present invention, consider in the process that the display interface data of controlled end are transmitted to main control end, in fact greatly data are the desktop backgrounds representing controlled end, and generally, desktop background may be set to comparatively complicated picture by controlled end user, when transmitting such image data, just need to take larger transmission bandwidth.But in fact, the desktop background of controlled end is in fact completely nonsensical for remote assistance operation, therefore, on transmission desktop background picture, shared transmission bandwidth is actually a kind of waste.If this part data can be reduced, then greatly can save taking transmission bandwidth, also can not affect normally carrying out of remote assistance service simultaneously.For this reason, in embodiments of the present invention, setting up after Long-distance Control is connected with main control end, being not directly sectional drawing is carried out to the display interface of controlled end, but first the desktop background of controlled end being shown as monochrome, and then carrying out the transmission of image.Like this, the display interface of controlled end will be made to become fairly simple, and when simple displaying interface basis carrying out sectional drawing and then encodes to picture, the amount of information of needs will be fewer, and then when carrying out the transmission of data message, the transmission bandwidth taken also will be fewer.
Wherein, when the desktop background of controlled end is set to monochrome, concrete color value can be arbitrary, such as, can be black etc.During specific implementation, by the mode of list item corresponding in edit the registry, monochrome desktop background being set to certain color value can be realized.Such as, registry entry HKEY_CURRENT_USER Control Panel the key assignments of Wallpaper under Desktopd represent the filename of the picture that desktop background uses, therefore, in order to desktop background being changed into monochromatic value, first just the key assignments of this registry entry can be changed into sky, desktop background picture so just can be made to be nothing, also, any pictures not to be set to desktop background picture; Meanwhile, can by edit the registry item HKEY_CURRENT_USER Control Panel the key assignments of Background under Colors, desktop background color is set to required color.Wherein, the key assignments of Background is character string type, this character string is divided into three sections, using " space " as separator between every section, three segment datas represent trichromatic value respectively, are also red R, green G, blue B, the span of every segment data is 0 to 255, therefore, by the numerical value for three section input correspondences, the amendment to desktop background color can just can be realized.Such as, be set to " 000 " by the key assignments of Background, then desktop background will be shown as black, will be set to " 25500 " by the key assignments of Background, then desktop background is by shown in red, etc.In actual applications, the color value of desktop background can be selected arbitrarily.Certainly, when specific implementation, corresponding program can be write in advance at remote assistance instrument, and set the rgb value of required desktop background color in a program, then revised the registry entry of system by this program, can realize above-mentioned controlled end desktop background being set to monochrome.
It should be noted that, be only used to reduce taking transmission bandwidth in the process of remote assistance service owing to the desktop background of controlled end to be changed into monochrome, therefore, after remote assistance process terminates, automatically the state before desktop background can also being returned to, and after desktop background is changed into monochrome, user can also be pointed out, " in order to make the process of remote assistance more smooth; need temporarily to change its desktop background into certain color; can automatically recover after remote assistance completes ", etc.Or, can also inquire whether user allows to carry out provisional amendment to desktop background before modification, if user agrees to amendment, then its desktop background be modified.
In order to the state before automatically desktop background can being returned to amendment, before desktop background is set to monochrome, the desktop background information of controlled end can also be obtained, and be saved in a registry file of specifying.Wherein, so-called desktop background information, the path of the picture that desktop background uses can be comprised, and the display mode of background picture (between two parties, tiling or stretching), also namely, need to know before modification, what desktop background adopted is that width picture, this picture shows in mode that is placed in the middle, that tile or stretch, these information is kept in a registry file.Then, when needs recovery desktop background is arranged, the desktop background information of preserving in this registry file can just be read out, the desktop background then by using these information to reset controlled end.
Wherein, specifically when obtaining desktop background information, the key assignments of the registry entry of specifying can be obtained by reading registration table, the display mode of desktop background picture is got according to this key assignments, meanwhile, the API(Application Programming Interface that can be provided by call operation system, application programming interface) mode of function, obtain the storing path of desktop background picture, also namely know which width picture controlled end uses.Such as, by read HKEY_CURRENT_USER ControlPanel the key assignments of these two registry entries of WallpaperStyle and TileWallpaper under Desktop, the display mode that desktop background picture uses can be got.Such as, if the key assignments that the key assignments of TileWallpaper is 0, WallpaperStyle is also 0, then the display mode representing desktop background picture is placed in the middle; If the key assignments that the key assignments of TileWallpaper is 1, WallpaperStyle is 0, then represent the display mode of desktop background picture for tiling; If the key assignments that the key assignments of TileWallpaper is 0, WallpaperStyle is 2, then represent the display mode of desktop background picture for stretching.Therefore, by reading the key assignments of these two registry entries, which kind of display mode what can know current desktop background picture employing is.
Meanwhile, the mode of the API that can be provided by calling system, obtains the storing path of desktop background picture.This api function can be that SystemParametersInfo, SystemParametersInfo function can be used for inquiring about or arranging system-level parameters, can be got the path of the desktop background picture that controlled end uses by this function.
After the path getting desktop background picture and display mode, just these information can be kept in a registry file (taking reg as the file of suffix name).Like this, during state before needing that the desktop background of controlled end is returned to amendment, the desktop background information of preservation just can be read out from this registry file, then the key assignments of corresponding registry entry is revised (such as by these information, TileWallpaper can be comprised, WallpaperStyle, Wallpaper, the value of ConvertedWallpaper and OriginalWallpaper), then the api function that provides of calling system is to notify that operating system refreshes the desktop background of controlled terminal based on amended registration table key assignments, state before the desktop background of controlled end just can be made to return to amendment.Such as, can call SystemParametersInfo function equally, be SPI_SETDESKWALLPAPER by its optimum configurations, can notify that operating system uses amended registration table key assignments to arrange desktop background picture.
Wherein, when specific implementation, the time point recovering desktop background information can have multiple.Such as, but after completing a remote control service, the operation recovering desktop background information is performed.Wherein, event that Long-distance Control is connected can be disconnected as the mark completing remote control service using with main control end, and, when receiving the message disconnecting and being connected with the Long-distance Control between main control end, first perform the operation recovering desktop background information, and then disconnect the connection between main control end.Or, also the event of remote control program will can be exited as the mark completing remote control service, also be, when receiving the message exiting remote control program (also after disconnecting the connection between main control end, such as, when user clicks the X button of controlled end remote control program), first perform the operation recovering desktop background information, and then terminate the remote control program of controlled end.
Certainly, if disconnect the event that Long-distance Control is connected or the event exiting remote control program as the trigger event recovering desktop background using with main control end, then once remote control program breaks down in running cause abnormal exiting, then desktop background cannot automatically restore to reset condition.In order to avoid the generation of this situation, multiple time point for recovering can be set, such as, can comprise that Long-distance Control connects when disconnecting, remote control program when exiting, remote control program be when to start next time, etc.; As long as and complete the recovery of desktop background at any one time point, the desktop background information deletion just will preserved in registry file.Like this, whether each time point can be just empty by judging in registry file, judge whether the recovery operation performing desktop background, if be empty, then prove to have performed over recovery operation, then no longer repeat recovery operation, if be not empty, then prove not yet to perform recovery operation, therefore just can perform recovery operation.Such as, suppose that remote control program is abnormal because fault causes to exit, not yet perform the recovery operation of desktop background, then when remote control program startup next time, find that registry file is not empty, just can prove that desktop background is not yet recovered, and the recovery operation concrete according to the information and executing of preserving in registry file.
The above determines in the recovery when carrying out desktop background by controlled end oneself, in actual applications, because concrete assistance operation sends in main control end, controlled end just performs the instruction that main control end sends, and main control end more easily knows when what remote assistance service can terminate.Therefore, also can send recovery instruction by main control end to controlled end, the desktop background of controlled end after the instruction receiving main control end, can be reverted to reset condition by such controlled end.Wherein, the recovery instruction that main control end sends, manually can be sent by main control end user, such as, after main control end user completes all operations of this time service, first can send to controlled end the instruction that is recovered desktop background, after end to be controlled completes the recovery operation of desktop background, then send instructions such as disconnecting.Certainly, main control end also can be send disconnect instruction while or afterwards, send and recover the instruction of desktop background, etc.
S102: the display interface based on described controlled end carries out image-capture, obtains display interface image;
S103: described display interface image is divided at least two blocks, described block is defined as image waiting for transmission respectively;
After the desktop background of controlled end is set to monochrome, just can determine image waiting for transmission, can combine with the block transmission of image in embodiments of the present invention.When carrying out image transmitting in remote assistance process; usually the subregion update mode of picture can be adopted to carry out the renewal of image; that is; equally for the consideration to reduction transmission bandwidth; if controlled end find with on compared with a moment; only have the image of subregion to there occurs change in screen, other region is constant, then the area image that only this part can be there occurs conversion is transferred to main control end.Upgrade to realize this subregion, usually need to carry out piecemeal to image, also namely before being transmitted, first image is divided into block one by one, and then these blocks are encoded respectively, and the coded message of each block and coordinate (are comprised the origin coordinates of each block, shared wide high pixel value, etc.) be sent to main control end, picture is converted to according to the coded message of each block in main control end, and according to respective coordinate figure, each block is combined, obtain complete image, thus show the display interface of controlled terminal.Controlled end is after subsequent time obtains image to display interface sectional drawing, piecemeal can be carried out in the same way to image, then compare with the block on a upper moment correspondence position, only the block that conversion occurs is encoded, and the data message obtained and coordinate corresponding to block are sent to main control end, then can repeat again to be sent to main control end than the block do not changed with a upper moment.The block changed newly received and the block do not changed originally received can combine according to respective coordinate by main control end, obtain complete image, by that analogy.
And in embodiments of the present invention, after the desktop background of controlled end is set to monochrome, can be multiple block according to certain model split by the display interface image grabbed equally, then using each block as image waiting for transmission, and then each block is encoded, re-send to main control end afterwards.
It should be noted that about specifically how carrying out piecemeal to image, and how to determine the coordinate, wide high of each block, see the implementation in prior art, no longer can describe in detail here.
S104: if in current block be all desktop background, then send described monochromatic corresponding colour to described main control end, so that main control end is according to described colour display current block;
After determining image waiting for transmission, just can treat transmitting image and encode, the data message obtained is sent to main control end, to demonstrate the display interface of controlled end in main control end.Wherein, if image waiting for transmission comprises whole desktop backgrounds, then just can send the colour of the monochrome correspondence of desktop background to main control end.Wherein, when combining image block transmission, effect is particularly evident.This is because, generally, having very large area in display interface is desktop background, such as, if user does not open any program window, may only at some icons of the position display such as left side in the display interface of then user, at bottom display START button and status bar, remainder is desktop background; After like this piecemeal being carried out to display interface image, in each block obtained, block greatly just may be had to be all only comprise desktop background, therefore, for such block, as long as the coordinate of this block and the colour of desktop background are sent to main control end, and need not again each pixel in this block be encoded, therefore, greatly save amount of coded data, and then save transmission bandwidth.
And for not only comprising the block of desktop background, the embodiment of the present invention also provides corresponding method for encoding images, to reduce taking transmission bandwidth as far as possible.Concrete, the color category comprised in block can be judged, if the color value comprised in certain block is more than three kinds, then can judge the flatness of tile images, then the compress mode of this block is determined according to judged result, compress with the image of this suitable compress mode to this block, then send the view data after compression to main control end, so that main control end is according to the view data display current block after compression.Such as, if level and smooth, JPEG(Joint Photographic Experts Group is used, joint image expert group) algorithm compresses, if unsmooth, compresses with ZIP algorithm.Wherein, be so-calledly smoothly and sharply relative concept that smoothly just to refer in image the excessively relatively milder of color between each image, entire image picture is softer, not edge boundary too clearly, etc.When judging that whether piece image is level and smooth, can judge whether the summation of the color distortion of adjacent image point in image is less than a threshold value (its value can set according to the actual needs or adjust), if be less than, then prove that this image is smoother, and then the jpeg algorithm being more suitable for smoothed image can be selected to compress; Otherwise this image is unsmooth, also namely relatively sharp-pointed, and then the ZIP algorithm being more suitable for unsmooth image can be selected to compress.Certainly, the image compression algorithm adopted due to different blocks may be different, therefore, in order to main control end can correctly be decoded, can also while the data message after main control end transmission compression, carry the image compression algorithm of corresponding block, so that main control end utilizes corresponding decompression algorithm, recover corresponding tile images.
Wherein, ZIP is a kind of harmless compress mode, and for the image determined, its compression factor is identical; But jpeg algorithm then can require to adjust its compression factor according to different compression qualities, and, when identical compression quality, smoothness and compression factor are inversely proportional to, also be, when using jpeg algorithm to compress level and smooth image, if required compression quality is certain, the compression factor of jpeg algorithm then can be selected according to the smoothness of image, if the smoothness of image is higher, then can use lower compression factor, otherwise, if the smoothness of image is lower, then the compression factor also used is also higher.In addition, when identical compression factor, image compression quality is directly proportional to Image Smoothness, and also, Image Smoothness is higher, then image compression quality is also higher.
It should be noted that, specifically in judgement block during the quantity of that color value comprised, the each pixel in region can be traveled through, when learning the color value of first pixel, this color value is kept in a color value table, after learning the color value of next pixel, first judge whether there is this color value in color value table, if not in table, then represent the color that discovery one is new, this color value is inserted in color value table simultaneously, if suffered at color value table, then continue traversal, by that analogy, final just can learning in a block comprises how many pixel values altogether.Certainly, as mentioned before, if find the color value comprising more than three in a block, judge that the mode of smoothness is carried out Selective Pressure compression algorithm and carried out compressing rear transmission with regard to adopting, therefore, in the process of traversal, after discovery three kinds of color values, just can stop traversal, to save the operating time.
In actual applications, concrete execution step can comprise the following steps S105 to S107:
S105: if the color category comprised in current block is at least three kinds, then the flatness of described block is judged;
S106: determine the compress mode to described current block according to judged result, and with described compress mode, the corresponding view data of described block is compressed;
S107: send the view data after compression to described main control end, so that main control end shows described current block according to the view data after described compression.
In addition, if only have two kinds of colors in certain block, then can carry out index respectively to two kinds of colors, then with the index value that two kinds of colors are corresponding respectively, described current block is encoded, again by coding result, and the corresponding relation of index value and color value sends main control end to, and such main control end just can according to coding result, and the corresponding relation of index value and color value, demonstrate current block.Such as, after getting two kinds of color values, wherein a kind of color value can be represented with 0, another kind of color value is represented with 1, then index with 0 and 1, by block from top to bottom the order of a line a line each pixel is encoded, for each pixel, if the first color value is just encoded into 0, if the second color value is just encoded into 1.Like this, index value only has one, and the color value that index value is corresponding can be 24, because color value needs to indicate to be specially what color by the concrete value of RGB.Namely have a talk about, in this manner, do not need the color value of each pixel with 24 to encode, but only with the index value of 1, each pixel is encoded, the color value that two index values are corresponding is respectively sent to main control end simultaneously.In other words, suppose that certain block has 10,000 pixels, if then each pixel is encoded with the color value of 24, then coding after data volume be at least 240,000 bits, and if the coded system provided according to the embodiment of the present invention, the data volume after coding is only 10,000 bits, and only need in addition can indicate corresponding relation between encoded radio and color value by the data of tens bits, visible, this mode greatly reduces the data volume needed for Image Coding, and then saves transmission bandwidth.
In a word, after controlled end desktop background is set to monochrome, taking transmission bandwidth can be reduced as much as possible in several ways.When the data-message transmission of controlled end is to after main control end, main control end just can be resolved data message, and restores the image of controlled end display interface.Simultaneously, at controlled end, also can according to the display interface of prefixed time interval intermittent scanning controlled end, the color change comprised in one or more described block in each scanning of monitoring, by the block coordinate changed, and the Image Coding result after change, send to main control end, so that main control end is according to described coordinate and Image Coding result, one or more blocks that display is corresponding.
Corresponding with the remote data transmission method described in the embodiment of the present invention, the embodiment of the present invention additionally provides a kind of remote data transmission equipment, and see Fig. 2, this equipment can be configured in the controlled end of remote assistance service system, and this equipment specifically can comprise:
Setting unit 201, is suitable for, setting up after Long-distance Control is connected with main control end, the desktop background of controlled end being shown as monochrome;
Placement unit 202, the display interface be suitable for based on described controlled end carries out image-capture, obtains display interface image;
Blocking unit 203, is suitable for described display interface image to be divided at least two blocks, described block is defined as image waiting for transmission respectively;
Data transfer unit 204, if be suitable for being all desktop background in current block, then sends described monochromatic corresponding colour to described main control end, so that main control end is according to described colour display current block;
Flatness detecting unit 205, if the color category being suitable for comprising in current block is at least three kinds, then judges the flatness of described block;
Compression unit 206, is suitable for the compress mode determining described current block according to judged result, and compresses the corresponding view data of described block with described compress mode;
Packed data delivery unit 207, is suitable for the view data after by compression and sends described main control end to, so that main control end shows described current block according to the view data after described compression.
Wherein, if comprise two kinds of colors in certain block, then see Fig. 3, this equipment can also comprise:
Indexing units 208, if the color category being suitable for comprising in current block is two kinds, then carries out index to two kinds of colors respectively;
Encoding performing unit 209, is suitable for encoding to described current block with the index value that two kinds of colors are corresponding respectively;
Coding delivery unit 210, be suitable for coding result, and the corresponding relation of described index value and color colour sends described main control end to; So that main control end is according to described coding result, and the corresponding relation of described index value and color colour, show described current block.
In order to after remote assistance service terminates, the desktop background of controlled end be returned to original state, in actual applications, see Fig. 4, this equipment can also comprise:
Recovery unit 211, is suitable for, at preset time point, the desktop background of controlled end being reverted to reset condition.
During specific implementation, in order to realize above-mentioned recovery process, described setting unit 201 comprises:
Acquisition of information subelement, is suitable for, setting up after Long-distance Control is connected with main control end, obtaining the desktop background information of controlled end, and being saved in the registry file of specifying by described desktop background information;
Subelement is set, is suitable for, according to preset color value, the desktop background of described controlled end is set to monochrome;
Described recovery unit 211 specifically can comprise:
Information reading sub-unit, is suitable for, according to the instruction of main control end or at preset time point, reading the desktop background information of preserving in described registry file of specifying;
Recover subelement, arrange for the desktop background according to read desktop background Information recovering controlled end.
Wherein, described desktop background information comprises desktop background picture and the display mode thereof of controlled end use, and described display mode comprises stretching, placed in the middle or tiling, and described acquisition of information subelement comprises:
The first system function call subelement, is suitable for the application programming interface api function provided by call operation system, obtains the path of the desktop background picture that controlled end uses;
Registration table reads subelement, is suitable for the display mode being obtained controlled end desktop background picture by the registration table of reading system;
Described recovery subelement comprises:
Registry Modifications subelement, is suitable for the registry information according to read desktop background information amendment system;
Second system function call subelement, is suitable for notifying that operating system refreshes the desktop background of controlled end based on amended registration table key assignments by the api function of call operation system.
In addition, this equipment can also comprise:
Information deletion unit, is suitable for, after the desktop background of controlled end is arranged, deleting the desktop background information of preserving in described registry file of specifying;
Described information reading sub-unit is specifically suitable for:
Long-distance Control connect disconnect time, remote control program exit time or remote control program restart time, read described registry file of specifying, if the registry file of specifying described is not for empty, the desktop background information of wherein preserving described in then reading, and trigger described recovery subelement and arrange according to the desktop background of read desktop background Information recovering controlled end.
In the process of remote assistance, this equipment can also comprise:
Monitoring unit, is suitable for the display interface according to prefixed time interval intermittent scanning controlled end;
Updating block, be suitable for monitoring the color change comprised in one or more described block in each scanning, by the block coordinate changed, and the color index value after change, send to main control end, so that main control end is according to described coordinate and color index value, the corresponding relation of described index value and color colour, one or more blocks that display is corresponding.
In addition, this equipment can also comprise:
Tip element, is suitable for, when the desktop background of controlled end is shown as monochrome, showing corresponding information.
In a word, in the equipment of the transfer of data in the remote assistance process that the embodiment of the present invention provides, can set up after Long-distance Control is connected in controlled end and main control end by setting unit 201, the desktop background of controlled end is shown as monochrome; After determining image waiting for transmission by placement unit 202 and blocking unit 203, if in current block be all desktop background, then directly send monochromatic corresponding colour to main control end by data transfer unit 204, thus main control end can be made according to the desktop background of the colour display controlled end transmitted, the desktop background picture that controlled end transmits to main control end is substituted by the colour that data volume is relatively little, the data volume transmitted from controlled end to main control end in remote control process can be reduced.And if that comprises the color of more than three kinds in current block, then can be judged by the flatness of image in flatness detecting unit 205 pairs of blocks, and select suitable image compression mode accordingly by compression unit 206, be sent to main control end by packed data delivery unit 207 after compression.Solve thus in remote control process and transmit the problem that controlled end background picture takies massive band width, achieve bandwidth shared when reducing transmission controlled end background picture, improve the beneficial effect of the fluency of remote control operation.
Intrinsic not relevant to any certain computer, virtual system or miscellaneous equipment with display at this algorithm provided.Various general-purpose system also can with use based on together with this teaching.According to description above, the structure constructed required by this type systematic is apparent.In addition, the present invention is not also for any certain programmed language.It should be understood that and various programming language can be utilized to realize content of the present invention described here, and the description done language-specific is above to disclose preferred forms of the present invention.
In specification provided herein, describe a large amount of detail.But can understand, embodiments of the invention can be put into practice when not having these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.
Similarly, be to be understood that, in order to simplify the disclosure and to help to understand in each inventive aspect one or more, in the description above to exemplary embodiment of the present invention, each feature of the present invention is grouped together in single embodiment, figure or the description to it sometimes.But, the method for the disclosure should be construed to the following intention of reflection: namely the present invention for required protection requires feature more more than the feature clearly recorded in each claim.Or rather, as claims below reflect, all features of disclosed single embodiment before inventive aspect is to be less than.Therefore, the claims following embodiment are incorporated to this embodiment thus clearly, and wherein each claim itself is as independent embodiment of the present invention.
Those skilled in the art are appreciated that and adaptively can change the module in the equipment in embodiment and they are arranged in one or more equipment different from this embodiment.Module in embodiment or unit or assembly can be combined into a module or unit or assembly, and multiple submodule or subelement or sub-component can be put them in addition.Except at least some in such feature and/or process or unit be mutually repel except, any combination can be adopted to combine all processes of all features disclosed in this specification (comprising adjoint claim, summary and accompanying drawing) and so disclosed any method or equipment or unit.Unless expressly stated otherwise, each feature disclosed in this specification (comprising adjoint claim, summary and accompanying drawing) can by providing identical, alternative features that is equivalent or similar object replaces.
In addition, those skilled in the art can understand, although embodiments more described herein to comprise in other embodiment some included feature instead of further feature, the combination of the feature of different embodiment means and to be within scope of the present invention and to form different embodiments.Such as, in the following claims, the one of any of embodiment required for protection can use with arbitrary compound mode.
All parts embodiment of the present invention with hardware implementing, or can realize with the software module run on one or more processor, or realizes with their combination.It will be understood by those of skill in the art that the some or all functions that microprocessor or digital signal processor (DSP) can be used in practice to realize according to the some or all parts in the remote data transmission equipment of the embodiment of the present invention.The present invention can also be embodied as part or all equipment for performing method as described herein or device program (such as, computer program and computer program).Realizing program of the present invention and can store on a computer-readable medium like this, or the form of one or more signal can be had.Such signal can be downloaded from internet website and obtain, or provides on carrier signal, or provides with any other form.
The present invention will be described instead of limit the invention to it should be noted above-described embodiment, and those skilled in the art can design alternative embodiment when not departing from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and does not arrange element in the claims or step.Word "a" or "an" before being positioned at element is not got rid of and be there is multiple such element.The present invention can by means of including the hardware of some different elements and realizing by means of the computer of suitably programming.In the unit claim listing some devices, several in these devices can be carry out imbody by same hardware branch.Word first, second and third-class use do not represent any order.Can be title by these word explanations.
The application can be applied to computer system/server, and it can operate with other universal or special computing system environment numerous or together with configuring.The example of the well-known computing system being suitable for using together with computer system/server, environment and/or configuration includes but not limited to: personal computer system, server computer system, thin client, thick client computer, hand-held or laptop devices, the system based on microprocessor, Set Top Box, programmable consumer electronics, NetPC Network PC, little type Ji calculate machine Xi Tong ﹑ large computer system and comprise the distributed cloud computing technology environment of above-mentioned any system, etc.
Computer system/server can describe under the general linguistic context of the computer system executable instruction (such as program module) performed by computer system.Usually, program module can comprise routine, program, target program, assembly, logic, data structure etc., and they perform specific task or realize specific abstract data type.Computer system/server can be implemented in distributed cloud computing environment, and in distributed cloud computing environment, task is performed by the remote processing devices by communication network links.In distributed cloud computing environment, program module can be positioned at and comprise on the Local or Remote computing system storage medium of memory device.
Claims (14)
1. a remote data transmission equipment, comprising:
Setting unit, is suitable for, setting up after Long-distance Control is connected with main control end, the desktop background of controlled end being shown as monochrome;
Placement unit, the display interface be suitable for based on described controlled end carries out image-capture, obtains display interface image;
Blocking unit, is suitable for described display interface image to be divided at least two blocks, described block is defined as image waiting for transmission respectively;
Data transfer unit, if be suitable for being all desktop background in current block, then sends described monochromatic corresponding colour to described main control end, so that main control end is according to described colour display current block;
Flatness detecting unit, if the color category being suitable for comprising in current block is at least three kinds, then judges the flatness of described block;
Compression unit, is suitable for the compress mode determining described current block according to judged result, and compresses the corresponding view data of described block with described compress mode;
Packed data delivery unit, is suitable for the view data after by compression and sends described main control end to, so that main control end shows described current block according to the view data after described compression;
Indexing units, if the color category being suitable for comprising in current block is two kinds, then carries out index to two kinds of colors respectively;
Encoding performing unit, is suitable for encoding to described current block with the index value that two kinds of colors are corresponding respectively;
Coding delivery unit, be suitable for coding result, and the corresponding relation of described index value and color colour sends described main control end to; So that main control end is according to described coding result, and the corresponding relation of described index value and color colour, show described current block.
2. equipment as claimed in claim 1, also comprises:
Recovery unit, is suitable for, according to the instruction of main control end or at preset time point, the desktop background of controlled end being reverted to reset condition.
3. equipment as claimed in claim 2, described setting unit comprises:
Acquisition of information subelement, is suitable for, setting up after Long-distance Control is connected with main control end, obtaining the desktop background information of controlled end, and being saved in the registry file of specifying by described desktop background information;
Subelement is set, is suitable for, according to preset color value, the desktop background of described controlled end is set to monochrome;
Described recovery unit comprises:
Information reading sub-unit, is suitable at preset time point, reads the desktop background information of preserving in described registry file of specifying;
Recover subelement, arrange for the desktop background according to read desktop background Information recovering controlled end.
4. equipment as claimed in claim 3, described desktop background information comprises desktop background picture and the display mode thereof of controlled end use, and described display mode comprises stretching, placed in the middle or tiling, and described acquisition of information subelement comprises:
The first system function call subelement, is suitable for the application programming interface api function provided by call operation system, obtains the path of the desktop background picture that controlled end uses;
Registration table reads subelement, is suitable for the display mode being obtained controlled end desktop background picture by the registration table of reading system;
Described recovery subelement comprises:
Registry Modifications subelement, is suitable for the registry information according to read desktop background information amendment system;
Second system function call subelement, is suitable for notifying that operating system refreshes the desktop background of controlled end based on amended registration table key assignments by the api function of call operation system.
5. equipment as claimed in claim 3, also comprises:
Information deletion unit, is suitable for, after the desktop background of controlled end is arranged, deleting the desktop background information of preserving in described registry file of specifying;
Described information reading sub-unit is specifically suitable for:
Long-distance Control connect disconnect time, remote control program exit time or remote control program restart time, read described registry file of specifying, if the registry file of specifying described is not for empty, the desktop background information of wherein preserving described in then reading, and trigger described recovery subelement and arrange according to the desktop background of read desktop background Information recovering controlled end.
6. the equipment as described in any one of claim 1 to 5, also comprises:
Monitoring unit, is suitable for the display interface according to prefixed time interval intermittent scanning controlled end;
Updating block, be suitable for monitoring the color change comprised in one or more described block in each scanning, by the block coordinate changed, and the color index value after change, send to main control end, so that main control end is according to described coordinate and color index value, the corresponding relation of described index value and color colour, one or more blocks that display is corresponding.
7. the equipment as described in any one of claim 1 to 5, also comprises:
Tip element, is suitable for, when the desktop background of controlled end is shown as monochrome, showing corresponding information.
8. a remote data transmission method, comprising:
Setting up after Long-distance Control is connected with main control end, the desktop background of controlled end is shown as monochrome;
Display interface based on described controlled end carries out image-capture, obtains display interface image;
Described display interface image is divided at least two blocks, described block is defined as image waiting for transmission respectively;
If in current block be all desktop background, then send described monochromatic corresponding colour to described main control end, so that main control end is according to described colour display current block;
If the color category comprised in current block is at least three kinds, then the flatness of described block is judged;
The compress mode to described current block is determined according to judged result;
With described compress mode, the corresponding view data of described block is compressed;
Send the view data after compression to described main control end, so that main control end shows described current block according to the view data after described compression;
If the color category comprised in current block is two kinds, then respectively index is carried out to two kinds of colors;
With the index value that two kinds of colors are corresponding respectively, described current block is encoded;
By coding result, and the corresponding relation of described index value and color colour sends described main control end to; So that main control end is according to described coding result, and the corresponding relation of described index value and color colour, show described current block.
9. method as claimed in claim 8, also comprises:
According to the instruction of main control end or at preset time point, the desktop background of controlled end is reverted to reset condition.
10. method as claimed in claim 9, is describedly setting up after Long-distance Control is connected with main control end, the desktop background of controlled end is shown as monochrome and comprises:
Setting up after Long-distance Control is connected with main control end, obtaining the desktop background information of controlled end, and described desktop background information is saved in the registry file of specifying;
According to preset color value, the desktop background of described controlled end is set to monochrome;
Described at preset time point, the desktop background of controlled end is reverted to original shape and comprises:
At preset time point, read the desktop background information of preserving in described registry file of specifying;
Desktop background according to read desktop background Information recovering controlled end is arranged.
11. methods as claimed in claim 10, described desktop background information comprises desktop background picture and the display mode thereof of controlled end use, and described display mode comprises stretching, placed in the middle or tiling, and the desktop background information of described acquisition controlled end comprises:
The application programming interface api function provided by call operation system, obtains the path of the desktop background picture that controlled end uses;
The display mode of controlled end desktop background picture is obtained by the registration table of reading system;
The described desktop background according to read desktop background Information recovering controlled end arranges and comprises:
According to the registry information of read desktop background information amendment system;
Notify that operating system refreshes the desktop background of controlled end based on amended registration table key assignments by the api function of call operation system.
12. methods as claimed in claim 10, also comprise:
After the desktop background of controlled end is arranged, delete the desktop background information of preserving in described registry file of specifying;
Described at preset time point, read the desktop background information of preserving in described registry file of specifying and comprise:
Long-distance Control connect disconnect time, remote control program exit time or remote control program restart time, read described registry file of specifying, if the registry file of specifying described is not for empty, the desktop background information of wherein preserving described in then reading, and triggering is arranged according to the desktop background of read desktop background Information recovering controlled end.
13. methods as described in any one of claim 8 to 12, also comprise:
According to the display interface of prefixed time interval intermittent scanning controlled end;
The color change comprised in one or more described block in each scanning of monitoring, by the block coordinate changed, and the color index value after change, send to main control end, so that main control end is according to described coordinate and color index value, the corresponding relation of described index value and color colour, one or more blocks that display is corresponding.
14. methods as described in any one of claim 8 to 12, also comprise:
When the desktop background of controlled end is shown as monochrome, show corresponding information.
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| CN107294878A (en) * | 2016-04-13 | 2017-10-24 | 中国移动通信有限公司研究院 | Data transmission method, system and relevant device |
| CN108195855B (en) * | 2017-12-27 | 2023-11-03 | 同方威视技术股份有限公司 | Security check system and method thereof |
| CN111405071A (en) * | 2020-06-02 | 2020-07-10 | 广东睿江云计算股份有限公司 | Cloud desktop based picture transmission method and system |
| CN115348471A (en) * | 2021-05-13 | 2022-11-15 | 上海擎感智能科技有限公司 | Information processing method and terminal |
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| US20090119365A1 (en) * | 2007-10-30 | 2009-05-07 | 1St Works Corporation | Method and apparatus for display synchronization using image compression |
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