CN103036980A - Data transmission equipment and method used for remote service - Google Patents
Data transmission equipment and method used for remote service Download PDFInfo
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- CN103036980A CN103036980A CN2012105412102A CN201210541210A CN103036980A CN 103036980 A CN103036980 A CN 103036980A CN 2012105412102 A CN2012105412102 A CN 2012105412102A CN 201210541210 A CN201210541210 A CN 201210541210A CN 103036980 A CN103036980 A CN 103036980A
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Abstract
The invention relates to the technical field of network data communication, and discloses data transmission equipment and a method used for remote service, wherein the method includes that after the data transmission equipment establishes remote control connection with a master control terminal, desktop background information is acquired and saved into a designed registry file; a desktop background of a controlled terminal is set as a monochrome according to preset color value; images to be transmitted are determined; if the images to be transmitted include all or a part of the desktop background, the color value corresponding to the master control terminal so that the master control terminal can conveniently display the desktop background of the controlled terminal according to the color value; according to instructions of the master control terminal or at a preset time, the desktop background information saved in the designed registry file is read, and setting of the desktop background of the controlled terminal is restored according to the read desktop background information; and when the monochrome is displayed as the desktop background of the controlled terminal, corresponding prompt information is displayed. The data transmission equipment and the method used for the remote service can reduce an occupied bandwidth when background pictures of the controlled terminal are transmitted.
Description
Technical field
The present invention relates to the network data communication technical field, be specifically related to data transmission set and method for remote service.
Background technology
Long-distance Control, refer to that the administrative staff of computer equipment or the support staff of system etc. are communicated with the computer equipment of long-range controlled terminal by the Internet, the desktop environment of controlled terminal computer equipment is shown on administrative staff or assistance personnel's etc. the computer equipment, long-range controlled terminal computer equipment is carried out the work such as system configuration, software installation procedure, fault eliminating by local computer device.
The related work of Long-distance Control need to just can carry out by network, being positioned at local computer equipment is the end that sends of operational order, be called main control end, and long-range controlled terminal computer equipment can be called controlled end, and controlled end receives and carries out operational order that main control end sends and carried out at controlled end.Main control end and controlled end can be the computer equipments that is arranged in same local area network (LAN), also can be two ones or the multi-section computer equipments being in any position that is connected into the Internet.Realize that main control end is to the control of controlled end, usually need in the computer equipment of main control end, client-side program be installed, build-in services device end program in the computer equipment of controlled end, the client-side program of main control end sends signal to the server of controlled end during use, set up the link of a remote service, then pass through the link of this remote service, controlled end transmits its desktop environment (comprising the information such as icon that show on the background information of desktop and the desktop) and is shown to main control end, main control end sends the corresponding remote control command of various remote control functions, the computer equipment of control controlled end is carried out remote control command, when the display interface of controlled end changes, needing that also the interface information after upgrading is sent to main control end requires it to carry out corresponding frame updating demonstration, move in circles with this, thereby finish the relevant work of various Long-distance Control.
When transmitting the desktop environment information of controlled end to main control end, normally direct desktop to controlled end carries out sectional drawing, then the picture that is truncated to is combined into data message and sends to main control end in the prior art.Yet, need larger bandwidth when carrying out data transfer with the form of picture, because 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 that smoothness is moved.
Summary of the invention
In view of the above problems, the present invention has been proposed in order to a kind of overcome the problems referred to above or the data transmission set that is used for remote service that addresses the above problem at least in part and the corresponding data transmission method that is used for remote service are provided.
According to one aspect of the present invention, a kind of data transmission set for remote service is provided, comprising:
The desktop background information acquisition unit is suitable for obtaining desktop background information, and being saved in the registry file of appointment with after main control end is set up Long-distance Control and is connected;
Setting unit is suitable for being set to monochrome according to the desktop background of the described controlled end of color value that presets;
Determining unit is suitable for determining image waiting for transmission;
Data transfer unit if be suitable for comprising all or part of desktop background in the described image waiting for transmission, then sends described monochromatic corresponding colour to described main control end, so that main control end shows the desktop background of controlled end according to described colour;
Recovery unit is suitable for reading the desktop background information of preserving in the registry file of described appointment according to the indication of main control end or at the time point that presets, and recovers the desktop background setting of controlled end according to the desktop background information that reads;
Tip element is suitable for showing corresponding information when the desktop background with controlled end is shown as monochrome.
Alternatively, described desktop background information acquisition unit comprises:
System function calls subelement, and the application programming interface api function that provides by the call operation system, the path that obtains the desktop background picture of controlled terminal are provided;
Registration table reads subelement, is suitable for obtaining by the registration table of reading system the display mode of controlled end desktop background picture; Described display mode comprises stretching, placed in the middle or tiling;
Described recovery unit comprises:
The Registry Modifications subelement is suitable at the time point that presets, and reads the desktop background information of preserving in the registry file of described appointment, according to the registry information of the desktop background information that reads to the modification system;
Second system function call subelement is suitable for notifying operating system to refresh the desktop background of controlled terminal based on amended registration table key assignments by the api function of call operation system.
Alternatively, also comprise:
The information deletion unit is suitable for deleting the desktop background information of preserving in the registry file of described appointment after the desktop background setting of controlled end;
Described recovery unit specifically is suitable for:
When Long-distance Control connect to disconnect, when remote control program withdraws from or remote control program when restarting, read the registry file of described appointment, if the registry file of described appointment is not empty, then read described desktop background information of wherein preserving, and the desktop background setting that recovers controlled end according to the desktop background information that reads.
Alternatively, described determining unit comprises:
The crawl subelement is suitable for carrying out image-capture based on the display interface of described controlled end, obtains the display interface image;
The piecemeal subelement is suitable for described display interface image is divided at least two blocks, and described block is defined as respectively image waiting for transmission;
Described data transfer unit comprises:
Judgment sub-unit is suitable for judging whether comprise desktop background in the current block;
Data transmit subelement, if be suitable for judging and comprise all or part of desktop background in the current block, then send described monochromatic corresponding colour and the coordinate of current block to main control end, so that main control end shows described current block according to colour and the coordinate of monochrome corresponding to described current block.
Alternatively, also comprise:
Indexing units is two kinds if be suitable for getting access to the color category that comprises in the current block, then two kinds of colors is carried out respectively index;
The coding performance element, be suitable for two kinds of colors respectively corresponding index value described current block is encoded;
The 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:
The flatness detecting unit is at least three kinds if be suitable for getting access to the color category that comprises in the current block, then the flatness of described block is judged;
The compress mode determining unit is suitable for according to the definite compress mode to described current block of judged result;
The compression performance element is suitable for described compress mode the corresponding view data of described block being compressed;
The packed data delivery unit is suitable for sending the view data after the compression to described main control end, so that the view data of main control end after according to described compression shows described current block.
Alternatively, also comprise:
Monitoring unit is suitable for the display interface according to Preset Time gap periods scanning controlled end;
Updating block, be suitable for monitoring the change color that comprises in one or more described blocks in each scanning, with the block coordinate that changes, and the color index value after changing, 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 shows corresponding one or more blocks.
According to a further aspect in the invention, provide a kind of data transmission method for remote service, having comprised:
With after main control end is set up Long-distance Control and is connected, obtain desktop background information, and be saved in the registry file of appointment;
Desktop background according to the described controlled end of color value that presets is set to monochrome;
Determine image waiting for transmission;
If comprise all or part of desktop background in the described image waiting for transmission, then send described monochromatic corresponding colour to described main control end, so that main control end shows the desktop background of controlled end according to described colour;
According to the indication of main control end or at the time point that presets, read the desktop background information of preserving in the registry file of described appointment, recover the desktop background setting of controlled end according to the desktop background information that reads;
When the desktop background with controlled end is shown as monochrome, show corresponding information.
Alternatively, the described desktop background information of obtaining comprises:
The application programming interface api function that provides by the call operation system, the path that obtains the desktop background picture of controlled terminal are provided;
Obtain the display mode of controlled end desktop background picture by the registration table of reading system; Described display mode comprises stretching, placed in the middle or tiling;
Described time point presetting reads the desktop background information of preserving in the registry file of described appointment, and the desktop background setting that recovers controlled end according to the desktop background information that reads comprises:
At the time point that presets, read the desktop background information of preserving in the registry file of described appointment, according to the registry information of the desktop background information that reads to the modification system;
Refresh the desktop background of controlled terminal based on amended registration table key assignments by the api function notice operating system of call operation system.
Alternatively, also comprise:
After the desktop background setting of controlled end, delete the desktop background information of preserving in the registry file of described appointment;
Described time point presetting reads the desktop background information of preserving in the registry file of described appointment, and the desktop background setting that recovers controlled end according to the desktop background information that reads comprises:
When Long-distance Control connect to disconnect, when remote control program withdraws from or remote control program when restarting, read the registry file of described appointment, if the registry file of described appointment is not empty, then read described desktop background information of wherein preserving, and the desktop background setting that recovers controlled end according to the desktop background information that reads.
Alternatively, described definite image waiting for transmission comprises:
Display interface based on described controlled end carries out image-capture, obtains the display interface image;
Described display interface image is divided at least two blocks, described block is defined as respectively image waiting for transmission;
If comprise all or part of desktop background in the image described waiting for transmission, then send described monochromatic corresponding colour to described main control end and comprise:
Judge and whether comprise desktop background in the current block;
If judge and comprise all or part of desktop background in the current block, then send described monochromatic corresponding colour and the coordinate of current block to main control end, so that main control end shows described current block according to colour and the coordinate of monochrome corresponding to described current block.
Alternatively, also comprise:
If getting access to the color category that comprises in the current block is two kinds, then two kinds of colors are carried out respectively index;
With two kinds of colors respectively corresponding index value described current block is encoded;
With 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:
Be at least three kinds if get access to the color category that comprises in the current block, then the flatness of described block judged;
According to the definite compress mode to described current block of judged result;
With described compress mode the corresponding view data of described block is compressed;
Send the view data after the compression to described main control end, so that the view data of main control end after according to described compression shows described current block.
Alternatively, also comprise:
Display interface according to Preset Time gap periods scanning controlled end;
The change color that comprises in one or more described blocks in the each scanning of monitoring, with the block coordinate that changes, and the color index value after changing, 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 shows corresponding one or more blocks.
Can get access to the desktop background information of controlled end and preserve by the desktop background information acquisition unit according to the data transmission set for remote service of the present invention, then by setting unit after controlled end and main control end are set up Long-distance Control and are connected, the desktop background of controlled end is shown as monochrome; After determining image waiting for transmission by determining unit, when in image waiting for transmission, only comprising the desktop background image by data transfer unit, send monochromatic corresponding colour to described main control end, thereby can make main control end according to the desktop background of the colour demonstration controlled end that transmits, controlled end is substituted by the colour of data volume less to the desktop background picture of main control end transmission; After finishing the remote assistance service, can also read the desktop background information of pre-save by recovery unit at the time point that presets, the desktop background setting of controlled end is recovered.Thereby can reduce the data volume of transmitting from controlled end to main control end in the remote control process, solved thus and transmitted the problem that the controlled end background picture takies massive band width in the remote control process, can reduce bandwidth shared when transmitting the controlled end background picture, improve the fluency of remote control operation, simultaneously, can after remote service finishes, in time recover the desktop background of controlled end, avoid affecting the normal configuration of controlled end.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by the specific embodiment of the present invention.
Description of drawings
By reading hereinafter detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skills.Accompanying drawing only is used for the purpose of preferred implementation is shown, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts with identical reference symbol.In the accompanying drawings:
Fig. 1 shows the according to an embodiment of the invention flow chart of method;
Fig. 2 shows the according to an embodiment of the invention schematic diagram of equipment;
And,
Fig. 3 shows the in accordance with another embodiment of the present invention schematic diagram of equipment.
Embodiment
Exemplary embodiment of the present disclosure is described below with reference to accompanying drawings in more detail.Although shown exemplary embodiment of the present disclosure in the accompanying drawing, yet should be appreciated that and to realize the disclosure and the embodiment that should do not set forth limits here with various forms.On the contrary, it is in order to understand the disclosure more thoroughly that these embodiment are provided, and can with the scope of the present disclosure complete convey to those skilled in the art.
Referring to Fig. 1, the embodiment of the invention provides a kind of data transmission method for remote service, and the method can may further comprise the steps:
S101: with after main control end is set up Long-distance Control and is connected, obtain desktop background information, and be saved in the registry file of appointment;
S102: the desktop background according to the described controlled end of color value that presets is set to monochrome;
In embodiments of the present invention, consider in the process that the display interface data with controlled end transmit to main control end, in fact greatly data are the desktop backgrounds that represent controlled end, and generally speaking, the controlled end user may desktop background be set to comparatively complicated picture, when transmitting such image data, just need to take larger transmission bandwidth.But in fact, the desktop background of controlled end is in fact fully nonsensical for the remote assistance operation, and therefore, shared transmission bandwidth is actually a kind of waste on transmission desktop background picture.If can reduce this part data, then can greatly save the taking of transmission bandwidth, can not affect normally carrying out of remote assistance service simultaneously yet.For this reason, in embodiments of the present invention, with after main control end is set up Long-distance Control and is connected, be not directly the display interface of controlled end to be carried out sectional drawing, but at first the desktop background of controlled end be shown as monochrome, and then carry out the transmission of image.Like this, will be so that the display interface of controlled end become fairly simple, carry out sectional drawing on basis, simple displaying interface and then when picture encoded, the amount of information that needs will be fewer, and then when carrying out the transmission of data message, the transmission bandwidth that takies also will be fewer.
Wherein, when the desktop background of controlled end was set to monochrome, concrete color value can be arbitrarily, for example, can be black etc.During specific implementation, can by the mode of list item corresponding in the edit the registry, realize that desktop background is set to the monochrome of certain color value.For example, registry key HKEY_CURRENT_USER Control Panel the key assignments of Wallpaper under the Desktopd represent the filename of the picture that desktop background uses, therefore, for desktop background being changed into monochromatic value, at first just can change the key assignments of this registry key into sky, so just can be so that the desktop background picture be nothing, also, not any pictures is set to the desktop background picture; Simultaneously, can by edit the registry item HKEY_CURRENT_USER Control Panel the key assignments of Background under the Colors, the desktop background color is set to needed color.Wherein, the key assignments of Background is character string type, this character string is divided into three sections, between every section with " space " as separator, three segment datas represent respectively trichromatic value, also are red R, green G, blue B, the span of every segment data is 0 to 255, therefore, can by being three numerical value corresponding to section input, just can realize the modification to the desktop background color.For example, the key assignments of Background is set to " 000 ", and then desktop background will be shown as black, and the key assignments of Background is set to " 25500 ", and then desktop background is shown in red, etc.In actual applications, the color value of desktop background can be selected arbitrarily.Certainly, when specific implementation, can write in advance corresponding program at the remote assistance instrument, and in program, set the rgb value of required desktop background color, then revise the registry key of system by this program, can realize that above-mentioned controlled end desktop background is set to monochrome.
Need to prove, because it only is in order to reduce taking transmission bandwidth in the process of remote assistance service that the desktop background of controlled end is changed into monochrome, therefore, after the remote assistance process finishes, state before can also automatically desktop background being returned to, and after desktop background is changed into monochrome, all right prompting user, " for so that the process of remote assistance is more smooth; need to temporarily change its desktop background into certain color; after remote assistance is finished, can automatically recover ", etc.Perhaps, can also before revising, the inquiry user whether allow desktop background is carried out provisional modification, if the user agrees to revise, again its desktop background be made amendment.
In order automatically desktop background to be returned to the state before revising, before desktop background is set to monochrome, can also obtain the desktop background information of controlled end, and it is saved in the registry file of an appointment.Wherein, so-called desktop background information, the path that can comprise the picture that desktop background is used, and the display mode of background picture (between two parties, tiling or stretching), also namely, need to be informed in before the modification, what desktop background adopted is that width of cloth picture, this picture is to show in mode placed in the middle, that tile or stretch, and these information are kept in the registry file.Then, when needs recovery desktop background arranges, just can read out the desktop background information of preserving in this registry file, then get final product by the desktop background of using these information to reset controlled end.
Wherein, specifically when obtaining desktop background information, can obtain by reading registration table the key assignments of the registry key of appointment, get access to the display mode of desktop background picture according to this key assignments, simultaneously, the API(Application Programming Interface that can provide by the call operation system, application programming interface) mode of function, obtain the storing path of desktop background picture, which width of cloth picture what also namely know the controlled end use is.For example, by read HKEY_CURRENT_USER ControlPanel WallpaperStyle under the Desktop and the key assignments of these two registry key of TileWallpaper, can get access to the display mode that the desktop background picture uses.For example, also be 0 if the key assignments of TileWallpaper is the key assignments of 0, WallpaperStyle, then represent the display mode of desktop background picture for placed in the middle; If the key assignments of TileWallpaper is the key assignments of 1, WallpaperStyle is 0, the display mode that then represents the desktop background picture is tiling; If the key assignments of TileWallpaper is the key assignments of 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 key, which kind of display mode what can know current desktop background picture employing is.
Simultaneously, the mode of the API that can provide by calling system is obtained the storing path of desktop background picture.This api function can be SystemParametersInfo, and the SystemParametersInfo function can be used for inquiring about or arranging system-level parameters, can get access to by this function the path of the desktop background picture of controlled end use.
After the path that gets access to the desktop background picture and display mode, just these information can be kept in the registry file (take the file of reg as the suffix name).Like this, in the time the desktop background of controlled end need to being returned to the state of revising before, just can from this registry file, read out the desktop background information of preservation, then the key assignments of revising corresponding registry key with these information (for example, can comprise TileWallpaper, WallpaperStyle, Wallpaper, the value of ConvertedWallpaper and OriginalWallpaper), then the api function that provides of calling system notifies operating system to refresh the desktop background of controlled terminal based on amended registration table key assignments, just can be so that the desktop background of controlled end returns to the state before revising.For example, can call the SystemParametersInfo function equally, its parameter is set to SPI_SETDESKWALLPAPER, can notify operating system to use amended registration table key assignments that the desktop background picture is set.
S103: determine image waiting for transmission;
After the desktop background of controlled end is set to monochrome, just can determine image waiting for transmission, prepare for transmitting to main control end.Wherein, when determining image waiting for transmission, can carry out sectional drawing to the display interface (comprising icon, start menu, the taskbar on desktop background and the desktop and the program tag that wherein shows etc.) of controlled end, then directly with the image that is truncated to as image waiting for transmission, then this image is encoded, send the data message that obtains to main control end and get final product.Because desktop background is set to monochrome, therefore required data volume will diminish when the display interface picture that is truncated to is encoded, and is corresponding, will reduce taking transmission bandwidth when carrying out transfer of data.
Perhaps, the embodiment of the invention can also combine with the piecemeal transmission of image.When in the remote assistance process, carrying out image transmitting; usually can adopt the subregion update mode of picture to carry out the renewal of image; that is to say; equally for the consideration to the reduction transmission bandwidth; if controlled end find with on one constantly compare; only have the image of subregion that variation has occured in the screen, other regional constant, the area image that conversion then can only this part have been occured is transferred to main control end.Upgrade in order to realize this subregion, usually need to carry out piecemeal to image, also namely before transmission, first image is divided into block one by one, and then these blocks are encoded respectively, and coded message and the coordinate of each block (comprised the origin coordinates of each block, shared wide high pixel value, etc.) send to main control end, convert picture in main control end to according to the coded message of each block, and according to coordinate figure separately each block is made up, obtain complete image, thereby show the display interface of controlled terminal.If controlled end is after next obtains image to the display interface sectional drawing constantly, can carry out piecemeal to image in the same way, then with upper one constantly the block on the correspondence position compare, the block that only conversion will occur is encoded, and data message and coordinate corresponding to block that obtains sent to main control end, and upper one constantly then can repeat again to send to main control end than the block that does not change.Main control end can make up the block that changes that newly receives and the block that does not change that originally received according to separately coordinate, obtain complete image, by that analogy.
And in embodiments of the present invention, after the desktop background of controlled end is set to monochrome, the display interface image that grabs can be divided into a plurality of blocks according to certain mode equally, then with each block as image waiting for transmission, and then each block encoded, re-send to afterwards main control end.
Need to prove, about specifically how image being carried out piecemeal, and the coordinate of each block of how to confirm, wide high, can referring to the implementation in the prior art, no longer describe in detail here.
S104: if comprise all or part of desktop background in the described image waiting for transmission, then send described monochromatic corresponding colour to described main control end, so that main control end shows the desktop background of controlled end according to described colour;
After having determined image waiting for transmission, just can treat transmitting image and encode, the data message that obtains is sent to main control end, in order to demonstrate the display interface of controlled end in main control end.Wherein, if comprise all or part of desktop background in the image waiting for transmission, then just can send the monochromatic corresponding colour of desktop background to main control end.Wherein, in the situation of combining image piecemeal transmission, effect is particularly evident.This be because, generally speaking, having very large area in the display interface is desktop background, for example, if the user does not open any program window, then may only show some icons in positions such as left sides in user's the display interface, show START button and status bar below, remainder is desktop background; Like this display interface image is carried out after the piecemeal, in each block that obtains, just may having greatly, block all is only to 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 saved transmission bandwidth.
And for the block that not only comprises desktop background, the embodiment of the invention also provides corresponding method for encoding images, to reduce as far as possible taking transmission bandwidth.Concrete, can judge the color category that comprises in the block, if only have two kinds of colors, then can carry out respectively index to two kinds of colors, then with two kinds of colors respectively corresponding index value described current block is encoded, again with coding result, and the corresponding relation of index value and color value sends main control end to, main control end just can be according to coding result like this, and the corresponding relation of index value and color value, demonstrates current block.For example, after getting access to two kinds of color values, can represent wherein a kind of color value with 0, with the another kind of color value of 1 representative, then index with 0 and 1, by in the block from top to bottom the order of delegation of delegation each pixel is encoded, for each pixel, if the first color value just is encoded into 0, if the second color value just is encoded into 1.Like this, index value only has one, and the color value that index value is corresponding can be 24, is specially what color because color value need to be expressed by the concrete value of RGB.Namely have a talk about, in this manner, do not need each pixel is encoded with 24 color value, but only come each pixel is encoded with 1 index value, simultaneously with two index values respectively corresponding color value send to main control end and get final product.In other words, suppose that certain block has 10,000 pixels, if then each pixel is encoded with 24 color value, then the data volume behind the coding is at least 240,000 bits, and if the coded system that provides according to the embodiment of the invention, the data volume behind the coding only is 10,000 bits, and in addition only need to can express corresponding relation between encoded radio and the color value by the data of tens bits, as seen, this mode greatly reduces the required data volume of Image Coding, and then saves transmission bandwidth.
In addition, if the color value that comprises in certain block is above three kinds, then can judge the flatness of tile images, then determine the compress mode of this block according to judged result, compress with the image of this suitable compress mode to this block, then the view data after will compressing sends main control end to, so that main control end shows current block according to the view data after compressing.For example, if smoothly would use JPEG(JointPhotographic Experts Group, joint image expert group) algorithm compresses, if unsmooth then compress with the ZIP algorithm.Wherein, so-calledly smoothly be and sharp-pointed relative concept, smoothly just refer in the image the excessively milder of color between each image, the entire image picture is softer, edge boundary too clearly not, etc.When judging that piece image is whether level and smooth, can judge that whether the summation of the color distortion of adjacent image point in the image is less than a threshold value (its value can be set or adjust according to the actual needs), if less than, prove that then this image is smoother, and then the jpeg algorithm that can select to be more suitable for smoothed image compresses; Otherwise this image is unsmooth, and is also namely more sharp-pointed, and then the ZIP algorithm that can select to be more suitable for unsmooth image compresses.Certainly, because the image compression algorithm that different blocks adopts may be different, therefore, for main control end can correctly be decoded, can also be in the data message after main control end transmission compression, carry the image compression algorithm of corresponding block, so that main control end is utilized corresponding decompression algorithm, recover corresponding tile images.
Wherein, ZIP is a kind of harmless compress mode, and for the image of determining, its compression factor is identical; But jpeg algorithm then can require to adjust its compression factor according to different compression qualities, and, in the situation of identical compression quality, smoothness and compression factor are inversely proportional to, also be, when using jpeg algorithm that level and smooth image is compressed, if required compression quality is certain, then can select according to the smoothness of image the compression factor of jpeg algorithm, if the smoothness of image is higher, then can use lower compression factor, otherwise, if the smoothness of image is lower, the compression factor of then also using is also higher.In addition, in the situation of identical compression factor, image compression quality is directly proportional with Image Smoothness, and also, Image Smoothness is higher, and then image compression quality is also just higher.
Need to prove, specifically in judging a block during quantity of that color value that comprises, can travel through each pixel in the zone, when learning the color value of first pixel, this color value is kept in the color value table, learn after the color value of next pixel, at first judge and whether have this color value in the color value table, if not in table, then a new color is found in representative, simultaneously this color value is inserted in the color value table, if suffered at the color value table, then continue traversal, by that analogy, finally just can learn in the block to comprise altogether what pixel values.Certainly, as mentioned before, if find to comprise in the block color value more than three, just adopt the mode of judging smoothness to select compression algorithm to compress rear transmission, therefore, in the process of traversal, after finding three kinds of color values, just can stop traversal, to save the operating time.
In addition, in actual applications, if when comprising three kinds even more colors in the block, also can use when having color value with aforementioned two kinds similar indexing means that image is encoded, just very many at the color value that comprises, to such an extent as to the shared bit number of index value during near the shared bit number of color value, just there is no need to carry out in this manner index, selects compress mode to compress according to smoothness and gets final product.
In a word, after the controlled end desktop background is set to monochrome, can reduce as much as possible in several ways taking transmission bandwidth.When the data-message transmission of controlled end after main control end, main control end just can be resolved the data message, and restores the image of controlled end display interface.Simultaneously, at controlled end, also can be according to the display interface of Preset Time gap periods scanning controlled end, the change color that comprises in one or more described blocks in the each scanning of monitoring, with the block coordinate that changes, and the Image Coding result after changing, send to main control end, so that main control end according to described coordinate and Image Coding result, shows corresponding one or more blocks.
S105: according to the indication of main control end or at the time point that presets, read the desktop background information of preserving in the registry file of described appointment, recover the desktop background setting of controlled end according to the desktop background information that reads.
Wherein, when specific implementation, the time point that recovers desktop background information can have a plurality of.For example, after finishing a Long-distance Control service, carry out the operation that recovers desktop background information.Wherein, can will disconnect event that Long-distance Control is connected as the sign of finishing the Long-distance Control service with main control end, and, receive disconnect with main control end between Long-distance Control be connected message the time, at first carry out to recover the operation of desktop background information, and then being connected between disconnection and the main control end.Perhaps, also can will withdraw from the event of remote control program as the sign of finishing the Long-distance Control service, also be, when receiving the message that withdraws from remote control program (also disconnect with main control end between be connected after, when for example the user clicks the X button of controlled end remote control program), at first carry out the operation that recovers desktop background information, and then finish the remote control program of controlled end.
Certainly, if will disconnect the event that Long-distance Control is connected or the event that withdraws from remote control program as the trigger event that recovers desktop background with main control end, in case then remote control program breaks down in running and causes unusually withdrawing from, then desktop background can't automatically restore to reset condition.For fear of the generation of this situation, a plurality of time points for recovering can be set, for example, can comprise that Long-distance Control connects when disconnecting, when remote control program withdraws from, when remote control program starts next time, etc.; And need only the recovery of having finished desktop background at any one time point, just with the desktop background information deletion of preserving in the registry file.Like this, whether each time point can be empty by judging in the registry file just, judge whether to carry out the recovery operation of desktop background, if be empty, then proof has been carried out the over recovery operation, then no longer repeats recovery operation, if be not empty, then proof is not yet carried out recovery operation, therefore just can carry out recovery operation.For example, suppose remote control program because the fault Anomalies Caused withdraws from, not yet carry out 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 not yet recovers, and concrete recovery operation gets final product according to the information and executing of preserving in the registry file.
The above is the recovery that is determined when to carry out desktop background by controlled end oneself, in actual applications, because concrete assistance operation is sent in main control end, controlled end is just carried out the instruction that main control end is sent, and main control end is easier knows when what remote assistance service can finish.Therefore, also can send recover indication to controlled end by main control end, controlled end can be after the indication of receiving main control end like this, and the desktop background of controlled end is reverted to reset condition.Wherein, the recovery indication that main control end is sent, can manually be sent by the main control end user, for example, after the main control end user has finished all operations of this time serving, can be at first send an instruction that recovers desktop background to controlled end, treat that controlled end finishes after the recovery operation of desktop background, send again and the instruction such as disconnect.Certainly, main control end also can be send disconnect instruction in or afterwards, send the instruction that recovers desktop background, etc.
In a word, in the remote assistance process that the embodiment of the invention provides in the method for the transmission of data, can get access in advance the desktop background information of controlled end and preserve, then after controlled end and main control end are set up Long-distance Control and be connected, the desktop background of controlled end is shown as monochrome; After determining image waiting for transmission, when in image waiting for transmission, comprising all or part of desktop background, send monochromatic corresponding colour to described main control end, thereby can make main control end according to the desktop background of the colour demonstration controlled end that transmits, controlled end is substituted by the colour of data volume less to the desktop background picture of main control end transmission; After finishing the remote assistance service, can also read the desktop background information of pre-save at the time point that presets, the desktop background setting of controlled end is recovered.Thereby can reduce the data volume of transmitting from controlled end to main control end in the remote control process, solved thus and transmitted the problem that the controlled end background picture takies massive band width in the remote control process, can reduce bandwidth shared when transmitting the controlled end background picture, improve the fluency of remote control operation, simultaneously, can after remote service finishes, in time recover the desktop background of controlled end, avoid affecting the normal configuration of controlled end.
Corresponding with the data transmission method that is used for remote service that the embodiment of the invention provides, the embodiment of the invention also provides a kind of data transmission set for remote service, referring to Fig. 2, this equipment can be configured in the controlled end of assistance system at a distance, specifically can comprise:
Desktop background information acquisition unit 201 is suitable for obtaining desktop background information, and being saved in the registry file of appointment with after main control end is set up Long-distance Control and is connected;
Setting unit 202 is suitable for being set to monochrome according to the desktop background of the described controlled end of color value that presets;
Determining unit 203 is suitable for determining image waiting for transmission;
Wherein, during specific implementation, described desktop background information acquisition unit 201 can comprise:
System function calls subelement, and the application programming interface api function that provides by the call operation system, the path that obtains the desktop background picture of controlled terminal are provided;
Registration table reads subelement, is suitable for obtaining by the registration table of reading system the display mode of controlled end desktop background picture; Described display mode comprises stretching, placed in the middle or tiling;
Described recovery unit 205 can comprise:
The Registry Modifications subelement is suitable at the time point that presets, and reads the desktop background information of preserving in the registry file of described appointment, according to the registry information of the desktop background information that reads to the modification system;
Second system function call subelement is suitable for notifying operating system to refresh the desktop background of controlled terminal based on amended registration table key assignments by the api function of call operation system.
Wherein, this equipment can also comprise:
The information deletion unit is suitable for deleting the desktop background information of preserving in the registry file of described appointment after the desktop background setting of controlled end;
Described recovery unit 205 specifically is suitable for:
When Long-distance Control connect to disconnect, when remote control program withdraws from or remote control program when restarting, read the registry file of described appointment, if the registry file of described appointment is not empty, then read described desktop background information of wherein preserving, and the desktop background setting that recovers controlled end according to the desktop background information that reads.
In actual applications, the embodiment of the invention can also combine with the piecemeal transmission technology of image, and is concrete, and referring to Fig. 3, described determining unit 203 can comprise
Described data transfer unit 204 comprises:
Data transmit subelement 2042, if be suitable for judging and comprise all or part of desktop background in the current block, then send described monochromatic corresponding colour and the coordinate of current block to main control end, so that main control end shows described current block according to colour and the coordinate of monochrome corresponding to described current block.
During specific implementation, this equipment can also comprise:
Indexing units is two kinds if be suitable for getting access to the color category that comprises in the current block, then two kinds of colors is carried out respectively index;
The coding performance element, be suitable for two kinds of colors respectively corresponding index value described current block is encoded;
The 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.
In addition, this equipment can also comprise:
The flatness detecting unit is at least three kinds if be suitable for getting access to the color category that comprises in the current block, then the flatness of described block is judged;
The compress mode determining unit is suitable for according to the definite compress mode to described current block of judged result;
The compression performance element is suitable for described compress mode the corresponding view data of described block being compressed;
The packed data delivery unit is suitable for sending the view data after the compression to described main control end, so that the view data of main control end after according to described compression shows described current block.
In the process of remote assistance, this equipment can also comprise:
Monitoring unit is suitable for the display interface according to Preset Time gap periods scanning controlled end;
Updating block, be suitable for monitoring the change color that comprises in one or more described blocks in each scanning, with the block coordinate that changes, and the color index value after changing, 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 shows corresponding one or more blocks.
In addition, this equipment can also comprise:
Tip element is suitable for showing corresponding information when the desktop background with controlled end is shown as monochrome.
In the remote assistance process that the embodiment of the invention provides in the equipment of the transmission of data, can get access to the desktop background information of controlled end and preserve by the desktop background information acquisition unit, then by setting unit after controlled end and main control end are set up Long-distance Control and are connected, the desktop background of controlled end is shown as monochrome; After determining image waiting for transmission by determining unit, when in image waiting for transmission, comprising all or part of desktop background image by data transfer unit, send monochromatic corresponding colour to described main control end, thereby can make main control end according to the desktop background of the colour demonstration controlled end that transmits, controlled end is substituted by the colour of data volume less to the desktop background picture of main control end transmission; After finishing the remote assistance service, can also read the desktop background information of pre-save by recovery unit at the time point that presets, the desktop background setting of controlled end is recovered.Thereby can reduce the data volume of transmitting from controlled end to main control end in the remote control process, solved thus and transmitted the problem that the controlled end background picture takies massive band width in the remote control process, can reduce bandwidth shared when transmitting the controlled end background picture, improve the fluency of remote control operation, simultaneously, can after remote service finishes, in time recover the desktop background of controlled end, avoid affecting the normal configuration of controlled end.
Intrinsic not relevant with any certain computer, virtual system or miscellaneous equipment with demonstration at this algorithm that provides.Various general-purpose systems also can be with using based on the teaching at this.According to top description, it is apparent constructing the desired structure of this type systematic.In addition, the present invention is not also for any certain programmed language.Should be understood that and to utilize various programming languages to realize content of the present invention described here, and the top description that language-specific is done is in order to disclose preferred forms of the present invention.
In the specification that provides herein, a large amount of details have been described.Yet, can understand, embodiments of the invention can be put into practice in the situation of these details not having.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 one or more in each inventive aspect, in the description 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 in the above.Yet the method for the disclosure should be construed to the following intention of reflection: namely the present invention for required protection requires the more feature of feature clearly put down in writing than institute in each claim.Or rather, as following claims reflected, inventive aspect was to be less than all features of the disclosed single embodiment in front.Therefore, follow claims of embodiment and incorporate clearly thus this embodiment into, wherein each claim itself is as independent embodiment of the present invention.
Those skilled in the art are appreciated that and can adaptively change and they are arranged in one or more equipment different from this embodiment the module in the equipment among the embodiment.Can be combined into a module or unit or assembly to the module among the embodiment or unit or assembly, and can be divided into a plurality of submodules or subelement or sub-component to them in addition.In such feature and/or process or unit at least some are mutually repelling, and can adopt any combination to disclosed all features in this specification (comprising claim, summary and the accompanying drawing followed) and so all processes or the unit of disclosed any method or equipment make up.Unless in addition clearly statement, disclosed each feature can be by providing identical, being equal to or the alternative features of similar purpose replaces in this specification (comprising claim, summary and the accompanying drawing followed).
In addition, those skilled in the art can understand, although embodiment more described herein comprise some feature rather than further feature included among other embodiment, the combination of the feature of different embodiment means and is within the scope of the present invention and forms different embodiment.For example, in the following claims, the one of any of embodiment required for protection can be used with compound mode arbitrarily.
All parts embodiment of the present invention can realize with hardware, perhaps realizes with the software module of moving at one or more processor, and perhaps the combination with them realizes.It will be understood by those of skill in the art that and to use in practice microprocessor or digital signal processor (DSP) to realize according to some of the data transmission set that is used for remote service of the embodiment of the invention or all some or repertoire of parts.The present invention can also be embodied as be used to part or all equipment or the device program (for example, computer program and computer program) of carrying out method as described herein.Such realization program of the present invention can be stored on the computer-readable medium, perhaps can have the form of one or more signal.Such signal can be downloaded from internet website and obtain, and perhaps provides at carrier signal, perhaps provides with any other form.
It should be noted above-described embodiment the present invention will be described rather than limit the invention, and those skilled in the art can design alternative embodiment in the situation of the scope that does not break away from 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 is not listed in element or step in the claim.Being positioned at word " " before the element or " one " does not get rid of and has a plurality of such elements.The present invention can realize by means of the hardware that includes some different elements and by means of the computer of suitably programming.In having enumerated the unit claim of some devices, several in these devices can be to come imbody by same hardware branch.The use of word first, second and C grade does not represent any order.Can be title with these word explanations.
The application can be applied to computer system/server, and it can be with numerous other universal or special computingasystem environment or configuration operation.The example that is suitable for well-known computing system, environment and/or the configuration used with computer system/server 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, Xiao 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 be described under the general linguistic context of the computer system executable instruction (such as program module) of being carried out by computer system.Usually, program module can comprise routine, program, target program, assembly, logic, data structure etc., and they are carried out specific task or realize specific abstract data type.Computer system/server can be implemented in distributed cloud computing environment, and in the distributed cloud computing environment, task is by carrying out by the teleprocessing equipment of communication network link.In distributed cloud computing environment, program module can be positioned on the Local or Remote computing system storage medium that comprises memory device.
Claims (14)
1. data transmission set that is used for remote service comprises:
The desktop background information acquisition unit is suitable for obtaining desktop background information, and being saved in the registry file of appointment with after main control end is set up Long-distance Control and is connected;
Setting unit is suitable for being set to monochrome according to the desktop background of the described controlled end of color value that presets;
Determining unit is suitable for determining image waiting for transmission;
Data transfer unit if be suitable for comprising all or part of desktop background in the described image waiting for transmission, then sends described monochromatic corresponding colour to described main control end, so that main control end shows the desktop background of controlled end according to described colour;
Recovery unit is suitable for reading the desktop background information of preserving in the registry file of described appointment according to the indication of main control end or at the time point that presets, and recovers the desktop background setting of controlled end according to the desktop background information that reads;
Tip element is suitable for showing corresponding information when the desktop background with controlled end is shown as monochrome.
2. equipment as claimed in claim 1, described desktop background information acquisition unit comprises:
System function calls subelement, and the application programming interface api function that provides by the call operation system, the path that obtains the desktop background picture of controlled terminal are provided;
Registration table reads subelement, is suitable for obtaining by the registration table of reading system the display mode of controlled end desktop background picture; Described display mode comprises stretching, placed in the middle or tiling;
Described recovery unit comprises:
The Registry Modifications subelement is suitable at the time point that presets, and reads the desktop background information of preserving in the registry file of described appointment, according to the registry information of the desktop background information that reads to the modification system;
Second system function call subelement is suitable for notifying operating system to refresh the desktop background of controlled terminal based on amended registration table key assignments by the api function of call operation system.
3. equipment as claimed in claim 1 or 2 also comprises:
The information deletion unit is suitable for deleting the desktop background information of preserving in the registry file of described appointment after the desktop background setting of controlled end;
Described recovery unit specifically is suitable for:
When Long-distance Control connect to disconnect, when remote control program withdraws from or remote control program when restarting, read the registry file of described appointment, if the registry file of described appointment is not empty, then read described desktop background information of wherein preserving, and the desktop background setting that recovers controlled end according to the desktop background information that reads.
4. such as each described equipment of claims 1 to 3, described determining unit comprises:
The crawl subelement is suitable for carrying out image-capture based on the display interface of described controlled end, obtains the display interface image;
The piecemeal subelement is suitable for described display interface image is divided at least two blocks, and described block is defined as respectively image waiting for transmission;
Described data transfer unit comprises:
Judgment sub-unit is suitable for judging whether comprise desktop background in the current block;
Data transmit subelement, if be suitable for judging and comprise all or part of desktop background in the current block, then send described monochromatic corresponding colour and the coordinate of current block to main control end, so that main control end shows described current block according to colour and the coordinate of monochrome corresponding to described current block.
5. such as each described equipment of claim 1 to 4, also comprise:
Indexing units is two kinds if be suitable for getting access to the color category that comprises in the current block, then two kinds of colors is carried out respectively index;
The coding performance element, be suitable for two kinds of colors respectively corresponding index value described current block is encoded;
The 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.
6. such as each described equipment of claim 1 to 5, also comprise:
The flatness detecting unit is at least three kinds if be suitable for getting access to the color category that comprises in the current block, then the flatness of described block is judged;
The compress mode determining unit is suitable for according to the definite compress mode to described current block of judged result;
The compression performance element is suitable for described compress mode the corresponding view data of described block being compressed;
The packed data delivery unit is suitable for sending the view data after the compression to described main control end, so that the view data of main control end after according to described compression shows described current block.
7. such as each described equipment of claim 1 to 6, also comprise:
Monitoring unit is suitable for the display interface according to Preset Time gap periods scanning controlled end;
Updating block, be suitable for monitoring the change color that comprises in one or more described blocks in each scanning, with the block coordinate that changes, and the color index value after changing, 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 shows corresponding one or more blocks.
8. data transmission method that is used for remote service comprises:
With after main control end is set up Long-distance Control and is connected, obtain desktop background information, and be saved in the registry file of appointment;
Desktop background according to the described controlled end of color value that presets is set to monochrome;
Determine image waiting for transmission;
If comprise all or part of desktop background in the described image waiting for transmission, then send described monochromatic corresponding colour to described main control end, so that main control end shows the desktop background of controlled end according to described colour;
According to the indication of main control end or at the time point that presets, read the desktop background information of preserving in the registry file of described appointment, recover the desktop background setting of controlled end according to the desktop background information that reads;
When the desktop background with controlled end is shown as monochrome, show corresponding information.
9. method as claimed in claim 8, the described desktop background information of obtaining comprises:
The application programming interface api function that provides by the call operation system, the path that obtains the desktop background picture of controlled terminal are provided;
Obtain the display mode of controlled end desktop background picture by the registration table of reading system; Described display mode comprises stretching, placed in the middle or tiling;
Described time point presetting reads the desktop background information of preserving in the registry file of described appointment, and the desktop background setting that recovers controlled end according to the desktop background information that reads comprises:
At the time point that presets, read the desktop background information of preserving in the registry file of described appointment, according to the registry information of the desktop background information that reads to the modification system;
Refresh the desktop background of controlled terminal based on amended registration table key assignments by the api function notice operating system of call operation system.
10. method as claimed in claim 8 or 9 also comprises:
After the desktop background setting of controlled end, delete the desktop background information of preserving in the registry file of described appointment;
Described time point presetting reads the desktop background information of preserving in the registry file of described appointment, and the desktop background setting that recovers controlled end according to the desktop background information that reads comprises:
When Long-distance Control connect to disconnect, when remote control program withdraws from or remote control program when restarting, read the registry file of described appointment, if the registry file of described appointment is not empty, then read described desktop background information of wherein preserving, and the desktop background setting that recovers controlled end according to the desktop background information that reads.
11. such as each described method of claim 8 to 10, described definite image waiting for transmission comprises:
Display interface based on described controlled end carries out image-capture, obtains the display interface image;
Described display interface image is divided at least two blocks, described block is defined as respectively image waiting for transmission;
If comprise all or part of desktop background in the image described waiting for transmission, then send described monochromatic corresponding colour to described main control end and comprise:
Judge and whether comprise desktop background in the current block;
If judge and comprise all or part of desktop background in the current block, then send described monochromatic corresponding colour and the coordinate of current block to main control end, so that main control end shows described current block according to colour and the coordinate of monochrome corresponding to described current block.
12. such as each described method of claim 8 to 11, also comprise:
If getting access to the color category that comprises in the current block is two kinds, then two kinds of colors are carried out respectively index;
With two kinds of colors respectively corresponding index value described current block is encoded;
With 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.
13. such as each described method of claim 8 to 12, also comprise:
Be at least three kinds if get access to the color category that comprises in the current block, then the flatness of described block judged;
According to the definite compress mode to described current block of judged result;
With described compress mode the corresponding view data of described block is compressed;
Send the view data after the compression to described main control end, so that the view data of main control end after according to described compression shows described current block.
14. such as each described method of claim 8 to 13, also comprise:
Display interface according to Preset Time gap periods scanning controlled end;
The change color that comprises in one or more described blocks in the each scanning of monitoring, with the block coordinate that changes, and the color index value after changing, 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 shows corresponding one or more blocks.
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| CN103036980B (en) | 2016-09-28 |
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