CN102592627A - Method and system for outputting and controlling LAN (Local Area Network) remote images, audios and videos - Google Patents
Method and system for outputting and controlling LAN (Local Area Network) remote images, audios and videos Download PDFInfo
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- CN102592627A CN102592627A CN2012100144422A CN201210014442A CN102592627A CN 102592627 A CN102592627 A CN 102592627A CN 2012100144422 A CN2012100144422 A CN 2012100144422A CN 201210014442 A CN201210014442 A CN 201210014442A CN 102592627 A CN102592627 A CN 102592627A
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Abstract
The invention relates to a method for outputting and controlling LAN (Local Area Network) remote images, audios and videos. The method comprises the following steps of: selecting at least one control object at a control end, wherein the content of the control object can display in form of the images, the audios and the videos; finding out an output end by the control end; transmitting a control instruction to the output end through the control end; requesting part or all of display data of the control object to the control end through the output end as required; responding requests of the output end by the control end and transmitting the required control object display data to the output end; and executing the control instruction of the control end and displaying the content of the control object at the output end according to a prospective action after the output end receives the required control object display data and the control instruction. The invention further provides a system for outputting and controlling the LAN remote images, the audios and the videos. By the system, remote display can be realized, bandwidth consumption is small and operation experience is smoother.
Description
Technical field
The present invention relates to output and the control method and the system of a kind of LAN remote image, audio frequency and video, belong to technical field of the computer network.
Background technology
Along with the high speed development of mobile Internet, earth-shaking variation has taken place in individual family.In the past, the intelligent digital equipment of family had only a desktop computer.Nowadays, to have a plurality of intelligent digital electrical equipment very general for one family.Big screen equipment is cloud TV, desktop computer, projector etc. for example; Portable small and exquisite equipment is smart mobile phone, panel computer, game machine etc. for example.In this case, these intelligent digital electrical equipment are invisible has set up a LAN.Through LAN, they can realize more funny shits.This just need through LAN realize an image, audio frequency, video on the equipment can be on another equipment long-range output and it is carried out Long-distance Control.
Traditional remote desktop technology can realize controlling another equipment (controlled terminal) fully with an equipment (control end), and representing of controlled terminal is transferred to control end and realizes the output and the control of image, audio frequency, video at control end.Because counter productives such as the remote desktop technology normally generates the Real Time Compression image of desktop and is transferred to control end, though this way versatility is good, exists bandwidth occupancy big, and video playback is not smooth.
Traditional remote control equipment such as TV remote controller, owing to only can transmit steering order, and controlling object is still at controlled terminal, so they are more as mouse and keyboard, nothing but wireless mouse-keyboard.For example, when you remove switching TV channel with a telepilot, the content of television channel is at the TV end so, rather than on telepilot.Therefore, under this pattern, controlled terminal can not feed back some status informations such as playing progress rate to control end, and control end and controlled terminal can not form two-way interaction.In addition, conventional remote control device is often walked infrared or other short-range transmission networks, is not suitable for being applied to family lan or Internet net remote transmission networks such as (as long as network speed are enough fast).
How can when the satisfied overwhelming majority be to the remote exhibition demand, reduce bandwidth consumption and make video playback smooth more, for the remote exhibition technology, be one of technical matters that needs to be resolved hurrily.
Summary of the invention
The object of the present invention is to provide a kind of method and system that carries out the output and the control of remote image, audio frequency and video through LAN, use this method and system can realize remote exhibition, and bandwidth consumption is little, operating experience is smooth more.
One aspect of the present invention provides the output and the control method of a kind of LAN remote image, audio frequency and video, comprising:
-select at least one controlling object at control end, the content of this object can be showed through image, audio or video form;
-control end is found output terminal;
-control end is to the output terminal sending controling instruction;
-output terminal is as required to the part or all of displaying data of control end request controlling object; The request of control end response output terminal transmits required controlling object to output terminal and shows data;
After-output terminal receives required controlling object displaying data and steering order, carry out the steering order of control end, the content of controlling object is showed by the behavior of expection at output terminal.
According to a concrete but nonrestrictive embodiment of the present invention, said method also comprises: output terminal is to control end feedback states information.
According to a concrete but nonrestrictive embodiment of the present invention, wherein, when the content of controlling object is exported, unifiedly transfer a kind of form among image, audio frequency, the video three to, and form is by standardization.
According to a concrete but nonrestrictive embodiment of the present invention, wherein, if controlling object is a picture, steering order for plays, amplify, dwindle, rotate, mobile and in the image enforcement animation any one; If controlling object is audio frequency and/or video, steering order is for playing, advance, retreat, locate, transfer big/small volume and in all possible operation of a certain frame support picture any one.
Another aspect of the present invention provides the output and the control system of a kind of LAN remote image, audio frequency and video, comprises at least one control end and at least one output terminal, and said system also comprises:
One input media is used to select at least one controlling object of control end, and the content of this object can be showed through image, audio or video form;
One communication device is used for control end and finds output terminal;
One communication device is used for control end to the output terminal sending controling instruction;
One communication device is used for output terminal as required to the part or all of displaying data of control end request controlling object; The request of control end response output terminal transmits required controlling object to output terminal and shows data;
One actuating unit is used for output terminal and receives after required controlling object shows data and steering order, carries out the steering order of control end, and the content of controlling object is showed by the behavior of expecting at output terminal.
According to a concrete but nonrestrictive embodiment of the present invention, said system also comprises: another communication device is used for output terminal to control end feedback states information.
According to a concrete but nonrestrictive embodiment of the present invention, wherein, when the content of controlling object is exported, unifiedly transfer a kind of form among image, audio frequency, the video three to, and form is by standardization.
According to a concrete but nonrestrictive embodiment of the present invention, wherein, if controlling object is a picture, steering order for plays, amplify, dwindle, rotate, mobile and in the image enforcement animation any one; If controlling object is audio frequency and/or video, steering order is for playing, advance, retreat, locate, transfer big/small volume and in all possible operation of a certain frame support picture any one.
Beneficial effect of the present invention is mainly reflected in:
The present invention is that an equipment (control end) is used as another equipment (controlled terminal) as outlet terminal; Control end is except to controlled terminal sends steering order; Its also sends simultaneously the content of controlling object to controlled terminal, and then has realized that the content on the portable equipment is arbitrarily showed on big screen equipment through LAN and play.For example, the present invention can be implemented in and opens a video on the mobile phone, lets it on televisor or projector, play, and on mobile phone the control of video playing process, as suspend, F.F., to audio frequency carry out volume amplification, dwindle etc. and to control; Perhaps on mobile phone, open photo, let it show on TV, control is taken a fancy to one, next opens photo, and comparison film amplifies, dwindles, rotation etc.
The present invention is through introducing by the notion of operand, and it is big to have solved in traditional remote desktop technology bandwidth occupancy, the slack problem of video playback.Because the displaying data of operand can be transmitted and buffer memory in advance, and can carry out breakpoint transmission, therefore this transmission mode of the present invention had both satisfied most demands to remote exhibition, and bandwidth consumption simultaneously is little, and video playback is more smooth.
But control end and controlled terminal two-way interaction.Except control end can be given the controlled terminal by sending controling instruction; Controlled terminal also can feed back some status informations such as playing progress rate and wait until control end, and controlled terminal can be asked the data of controlling object as required, and this is bigger contents such as audio or video for controlling object; Very practical; Can significantly reduce the transmission quantity of data, effectively reduce bandwidth consumption, thereby reach the effect of audio frequency, video smooth playing.
Control end is controlled with the mode of controlling object, and is easy to be easy-to-use, and user's operating experience is more smooth.Different by controlling object, steering order is also different.For picture, behavior such as can play, amplify, dwindle, rotate, move, even can implement an animation image; For audio frequency, video, can play, advance, retreat, locate, transfer big/small volume etc., also can support a certain frame is supported all possible operation of picture.
Description of drawings
Fig. 1 is the output and the control flow chart of LAN remote image of the present invention, audio frequency and video.
Embodiment
Hereinafter provides concrete embodiment and has combined accompanying drawing further the present invention to be carried out detailed description, but the present invention is not limited only to following embodiment.
In the output and control procedure of LAN remote image of the present invention, audio frequency and video, relate generally to two roles: one is control end, and it is portable equipment normally, such as mobile phone, panel computer, game machine etc.; Another is output terminal (or being called controlled terminal), and it is large-size screen monitors intelligent digital electrical equipment normally, cloudlike TV, desktop computer, projector etc.Whole control process comprises:
-user clicks the object that will control at control end (such as mobile phone), and the content of this controlling object can be showed through image, audio or video form.
-control end is found output terminal.We can find all output terminals that all support output terminal server protocol of the present invention through self-defined or adopt a ready-made lan services and find agreement.The user can select one or more output terminals to export, and also can be reduced to acquiescence and output to all output terminals, but provide setting option to allow the user to be provided with.This discovery step can adopt technology known in the art to realize, does not do too much introduction at this.
-control end is to the output terminal sending controling instruction;
-output terminal is as required to the part or all of displaying data of control end request controlling object; The request of control end response output terminal transmits required controlling object to output terminal and shows data.The original form of controlling object possibly be diversified, such as presentation slides, electrical form etc.But when they are exported, unified transfer a kind of form among image, audio frequency, the video three to, and form is also by standardization, for example image is supported conventional forms such as JPEG, PNG, GIF, and audio frequency is supported AAC, MP3 etc., the video support H.264, MPEG4 etc.When unprocessed form was not supported by output terminal, control end can carry out suitable format conversion.When controlling object is current with the audio or video mode, the displaying data of object might not transmit in order.For example when the user when control end carries out F.F. or navigates to certain broadcast point, control end needs the correspondingly preferential corresponding data that transmit, so that output terminal in time can be play.
After-output terminal receives required controlling object displaying data and steering order, carry out the steering order of control end, the content of controlling object is showed by the behavior of expection at output terminal.Thereby realized that the user controls output terminal through control end.Control end is controlled with the mode of controlling object.Different by controlled object, steering order is also different.For picture, behavior such as possibly play, amplify, dwindle, rotate, move, even can implement an animation image; For audio frequency, video, can play, advance, retreat, locate, transfer big/small volume etc., also can consider to support a certain frame is supported all possible operation of picture.The transmission course of user's the control behavior and the displaying data of controlling object walks abreast.The user controls the behavior meeting influences data transmission procedure, for example before to the F.F. of audio frequency, video.
-as optional step, output terminal can feedback states information be given control end.For example, can feed back the information such as progress (reproduction time), T.T. of current broadcast for audio frequency, video.
With the remote desktop technology content delivery of controlled terminal is represented and controls that different is to control end and at control end; The present invention is that an equipment (control end) is used as another equipment (controlled terminal) as outlet terminal; Sent the content of controlling object and represent and control at control end at controlled terminal to controlled terminal (being output terminal) by control end, content sources is control end but not controlled terminal.The present invention has introduced by the notion of operand; Because the displaying digital data of operand can be transmitted and buffer memory in advance, and can carry out breakpoint transmission, therefore this model can satisfy most demands to remote exhibition; And bandwidth consumption is little, and operating experience is more smooth.
As shown in Figure 1, the output and the control system of LAN remote image of the present invention, audio frequency and video mainly comprise: control end 1 and output terminal 2 (or being called controlled terminal).Control end 1 is portable equipment normally, like mobile phone, panel computer, game machine etc.; Output terminal 2 is large-size screen monitors intelligent digital electrical equipment normally, cloudlike TV, desktop computer, projector etc.
Control end 1 is to output terminal 2 sending controling instructions, and the request of response output terminal 2, transmits required controlling object content to output terminal 2.Output terminal 2 obtains the data of controlling object as required, so that practice thrift the data traffic of Network Transmission.Control end 1 carries out communication with output terminal 2 by following process:
Control end 1 is to output terminal 2 sending controling instructions; After output terminal 2 receives steering order, ask all or part of displaying data of controlling object as required to control end 1; The request of control end 1 response output terminal 2 is to the content of output terminal 2 transmission needs.After the data that output terminal 2 acquisitions need, carry out the steering order of control end.
Wherein, output terminal 2 has been realized the output terminal server protocol, waits for request and accepts control.Design focal point of the present invention is output terminal, and concrete agreement is following:
Control end sends steering order to output terminal, call Control (Token, ObjectId, ObjectType, Fsize, Attributes)-＞ok realizes.This request is used to carry out a Long-distance Control behavior.A Token parameter is imported in this request into, in order to verify the connection authority of two equipment; Import an ObjectId into, in order to unique identification, so that the back can obtain the displaying data of this object as controlling object; Importing an ObjectType into, in order to the type of sign object, is image, audio frequency or video; Import the Fsize parameter into, in order to the size of the displaying data of indicated object, this parameter is mainly for the needs of subsequent request data; Import the Attributes parameter into, to specify the displaying parameter of this object.For picture, behavior such as Attributes can play image, amplifies, dwindles, rotation, desired location, even can implement an animation to image; For audio frequency, video, Attribute can be provided with current play position, transfers big/small volume etc., also can consider to support a certain frame is supported all possible attribute setting of picture.Concrete displaying behavior can use technology known in the art to realize.
As an optional feature, control end also can be to some information of output terminal acquisition request, call GetCap (Token, ObjectId, Caps)-＞{ ok, Values} realizes.This request has two purposes, and the one, be used to obtain the device attribute of output terminal, for example some attribute of screen resolution (height and width), unit type etc.The 2nd, obtain by the status attribute of operand, for example the current playing progress rate of audio frequency and video, T.T., volume etc.A Token parameter is imported in this request into, in order to verify the connection authority of two equipment; Import an optional parameter ObjectId into,, do not import the device attribute that ObjectId then indicates to obtain output terminal into to identify the object of wanting getattr; Import a Caps parameter into to specify the attribute list that will obtain, the Values that returns is the corresponding values of these attributes.
In order to support to obtain as required the displaying data of controlling object, control end 1 also need provide access interface.For control end, its agreement is following:
Output terminal is to the displaying data of control end request controlling object, call Get (ObjectId, Offset, Len)-＞{ ok, Data} realizes.This request is used for the displaying data that output terminal obtains controlling object as required.An ObjectId parameter is imported in this request into, obtains the object of data with the sign expectation; Import an Offset parameter into, hope from where beginning the data of request object with sign; Import a Len parameter into, with the size of data of specifying hope to obtain.Very HTTP GET request of the support breakpoint transmission of standard when this is asked in fact.ObjectId parameter wherein can be placed among the URL, and Offset, these two parameters of Len can be placed on the Range field of HTTP HEADER.
How specify the Long-distance Control behavior below in conjunction with a specific embodiment carries out.Suppose that we will be with a width of cloth picture presentation at output terminal, and move to the screen upper left side, until vanishing from sight with given pace.This simple case in fact our Control instruction support animation time can a steering order realize that but we suppose that for the time being output terminal only supports still image, need us to instruct with a plurality of Control at control end and simulate this animation, as follows:
Here LOOP is a circulation to END LOOP, has just begun to let picture occupy the screen of whole output terminal, and the coordinate (X, Y) with picture moves to the screen upper left corner then.Screen height, screen width can obtain through the GetCap request.After having moved half screen height, entire image is just all at invisible area.The Sleep here (a period of time) is meant and lets program halt a period of time, in order to the rate travel of control picture.What need be careful is, here we repeatedly the Control instruction used same ObjectId, just same width of cloth picture.Output terminal receives Control when instruction, only when first time Control request through Get (ObjectId, 0, Fsize) to the data of control end request picture.Follow-up Control request is directly carried out the Control instruction because obtained the corresponding image data of this ObjectId before, and this picture is moved to reposition.This has just reached the effect of practicing thrift the data traffic of Network Transmission.
Claims (8)
1. the output and the control method of a LAN remote image, audio frequency and video comprise:
-select at least one controlling object at control end, the content of this object can be showed through image, audio or video form;
-control end is found output terminal;
-control end is to the output terminal sending controling instruction;
-output terminal is as required to the part or all of displaying data of control end request controlling object; The request of control end response output terminal transmits required controlling object to output terminal and shows data;
After-output terminal receives required controlling object displaying data and steering order, carry out the steering order of control end, the content of controlling object is showed by the behavior of expection at output terminal.
2. according to the method for claim 1, it is characterized in that said method also comprises: output terminal is to control end feedback states information.
3. according to the method for claim 1 or 2, it is characterized in that when the content of controlling object was exported, unification transferred a kind of form among image, audio frequency, the video three to, and form is by standardization.
4. according to the method for claim 1 or 2, it is characterized in that, if controlling object is a picture, steering order for plays, amplify, dwindle, rotate, mobile and in the image enforcement animation any one; If controlling object is audio frequency and/or video, steering order is for playing, advance, retreat, locate, transfer big/small volume and in all possible operation of a certain frame support picture any one.
5. the output and the control system of a LAN remote image, audio frequency and video comprise at least one control end and at least one output terminal, and said system also comprises:
One input media is used to select at least one controlling object of control end, and the content of this object can be showed through image, audio or video form;
One communication device is used for control end and finds output terminal;
One communication device is used for control end to the output terminal sending controling instruction;
One communication device is used for output terminal as required to the part or all of displaying data of control end request controlling object;
The request of control end response output terminal transmits required controlling object to output terminal and shows data;
One actuating unit is used for output terminal and receives after required controlling object shows data and steering order, carries out the steering order of control end, and the content of controlling object is showed by the behavior of expecting at output terminal.
6. according to the system of claim 5, it is characterized in that said system also comprises: another communication device is used for output terminal to control end feedback states information.
7. according to the system of claim 5 or 6, it is characterized in that when the content of controlling object was exported, unification transferred a kind of form among image, audio frequency, the video three to, and form is by standardization.
8. according to the system of claim 5 or 6, it is characterized in that, if controlling object is a picture, steering order for plays, amplify, dwindle, rotate, mobile and in the image enforcement animation any one; If controlling object is audio frequency and/or video, steering order is for playing, advance, retreat, locate, transfer big/small volume and in all possible operation of a certain frame support picture any one.
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| CN2012100144422A CN102592627A (en) | 2012-01-16 | 2012-01-16 | Method and system for outputting and controlling LAN (Local Area Network) remote images, audios and videos |
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| CN2012100144422A CN102592627A (en) | 2012-01-16 | 2012-01-16 | Method and system for outputting and controlling LAN (Local Area Network) remote images, audios and videos |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103763330A (en) * | 2014-02-18 | 2014-04-30 | 三星电子（中国）研发中心 | Method and mobile terminal for controlling multimedia in home network |
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| CN1790432A (en) * | 2004-12-15 | 2006-06-21 | Tcl王牌电子(深圳)有限公司 | AV system remote controller with display interface |
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Application publication date: 20120718 |