CN1625264A - Method and device for transmitting video - Google Patents
Method and device for transmitting video Download PDFInfo
- Publication number
- CN1625264A CN1625264A CN 200310119712 CN200310119712A CN1625264A CN 1625264 A CN1625264 A CN 1625264A CN 200310119712 CN200310119712 CN 200310119712 CN 200310119712 A CN200310119712 A CN 200310119712A CN 1625264 A CN1625264 A CN 1625264A
- Authority
- CN
- China
- Prior art keywords
- picture
- video
- data
- compressed format
- difference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to a video transmitting method, including the following steps: by judging process, determining compression form of transmitting video picture; according to the compression form, compressing the picture to generate the corresponding video compression data and control code; transmitting the video compression data and control code to a receiver. It firstly judges the compression form of the video to be transmitted, and then makes compression and transmission to provide better transmission quality and video.
Description
Technical field
The present invention relates to a kind of method and device of transmitting video data, particularly adopt different compressed format so that transmission quality and video preferably to be provided according to different video datas.
Background technology
In recent years, along with development of wireless communication devices, not only realized the hope of human radio communication, and in every product, also replaced wired mode with wireless mode gradually, except the constraint of breaking away from traditional wired mode, also allow the user freer and uncommitted.For example multimedia wireless transmission, however the network bandwidth always can't satisfy our needs, especially use in the application of massive band width at the needs resemble the multimedia, so the compression of data definitely is necessary.Because under the situation that current information technology is popularized, the demand of audio-visual multimedia is increasing, therefore, the digitlization of the image video trend that is inevitable.Yet the shared data volume of digitized video is quite huge again, in wireless transmission with handle all inconvenient.In view of this, with data compression is the best way, but do not have any compressed format at present the good compression quality can be provided all video datas, so the invention provides a kind of video transmitting method and device, can compress with different compressed format different types of picture data in the same video, make that transmitted data amount is less and image quality is preferably arranged.
Summary of the invention
Main purpose of the present invention provides a kind of method and device of transmitting video data, can utilize different compressed format compressed video datas, makes that transmitted data amount is less and image quality is preferably arranged.
In order to achieve the above object, the invention provides a kind of method of transmitting video data, comprise routine step down:, determine the compressed format that described picture is required by determination step; Compress described picture according to described compressed format, produce corresponding video compression data; Described video compression data is handled generation and described compressed format and the corresponding control code of described video compression data; And described video compression data and control code transferred to receiving system.
The present invention also provides a kind of device of transmitting video data, and described device comprises: video unit, processing unit and transmission unit.Described video unit can be store video and the memory cell of exporting described video, or the video reception unit of output video, described video data comprises a plurality of pictures (frame), described processing unit is connected to video unit, receive described video, and choose continuous pictures, according to detected situation between the picture, judge the compressed format that described picture is required, and produce corresponding video compression data according to described compressed format, transmission unit is connected to described processing unit, and described video compression data and control code are transferred to described receiving system.
Description of drawings
In order to make feature of the present invention, purpose and function clearer, describe the present invention with reference to the accompanying drawings in detail.
Fig. 1 is the preferred embodiment according to wireless transmitting system of the present invention.
Fig. 2 is the flow chart of the method according to this invention.
Fig. 3 is the schematic diagram according to video data of the present invention.
Embodiment
Fig. 1 illustrates the preferred embodiment according to the device of a kind of transmitting video data of the present invention.Device 2 of the present invention can transmitting video data (can be video (Video), still image (still image) or animation (animation)) to receiving system 24, connected mode wherein can be wired or wireless connection.Receiving system 24 can be the device that projector, computer or other can display videos.Device 2 comprises: video unit 21, processing unit 22 and transmission unit 23.Video unit 21 is video graphics adaptor VGA (Video Graphics adapter), also can be video receiver, for example cable television receiver, or video memory, and the video data that storage will be transmitted is as DVD player.This video data comprise a plurality of pictures (frame) (first picture, second picture, three-picture ..., by that analogy).Picture in the video data that processing unit 22 can selecting video unit 21 be sent, and the required compressed format of definite picture, and with described compressed format described picture is compressed, and produce corresponding video compression data.The picture variable quantity of two pictures that processing unit 22 estimations are adjacent, judge the compressed format that described picture is required according to described picture variable quantity, for example choose first and second pictures, calculate the picture variable quantity between first picture and second picture again, determine required compressed format and picture data is compressed according to the picture variable quantity with described compressed format, produce video compression data, for example when picture variable quantity during less than first reference value, then compress these pictures with first compressed format, if the picture variable quantity between first reference value and second reference value and second reference value greater than first reference value, then compress these pictures with second compressed format, if the picture variable quantity greater than second reference value, then compresses this picture with the 3rd compressed format.Processing unit 22 produces control code in the transmission of video packed data, transmission unit 23 transfers to receiving system 24 with video compression data and control code, wherein, receiving system 24 can utilize compressed format that described control code determines this video compression data carrying out corresponding gunzip, and control code comprises corresponding to the parameter of compressed format and corresponding to the compression time of packed data.After receiving element 24 receives this video compression data, can determine the compressed format and the relative time of video compression data, carry out corresponding decompress(ion) program, video compression data is reduced into original picture data according to control code.
As shown in Figure 3, the content that video unit 21 is transferred to the video data 4 of processing unit 22 can have various video, video 44 as the fast-changing high-speed mobile of picture, picture changes little animation 42 or still frame 40, therefore because the picture of video data 4 changes different, and various compress modes have different pluses and minuses to different pictures, if can come in different ways video data is compressed at different types of picture, then can improve image quality and effectively utilize transmission channel, among Fig. 3, video data 4 comprises first picture and second picture, after processing unit 22 receptions, according to the picture variable quantity between first picture and second picture, determine that it is a high-speed mobile image 44, any in animation 42 or the still frame 40, select corresponding preferred compression mode, for example MPEG compression, motion JPEG compresses or still frame is done the break-even compression method of image quality, and obtain corresponding video compression data 6 and control code 8, processing unit transfers to transmission unit 23 with video compression data 6 and control code 8, transfer to receiving element 24 in wired or wireless mode, receiving element 24 receives after video compression data 6 and the control code 8, again video compression data 6 is decompressed, wherein, data in the control code 8 are except will telling the employed within a certain period of time compression method of receiving element 24, also need to comprise the parameter relevant with compression, such as compression ratio etc., above-mentioned first picture and second picture can be continuous pictures or two pictures that extract in a time period, can determine according to system designer, in this embodiment, high-speed mobile image 44 uses the compression of MPEG compressed format, produces high-speed mobile image packed data 64 and corresponding control code 84.Animation 42 uses the compression of motion JPEG compressed format, produces animation packed data 62 and corresponding control code 82.Still frame 40 uses break-even compressed format compression, produces still frame packed data 60 and corresponding control code 80.When receiving element 24 receives high-speed mobile image packed data 64, promptly can know that high-speed mobile image packed data 64 is a MPEG compressed format according to corresponding control code 84, can carry out corresponding decompression procedure, high-speed mobile image packed data 64 is reduced to original high-speed mobile image 44, to present original high-speed mobile image 44, after the process specific compression format is compressed, transmission again, can make that transmitted data amount is less and the effect of image quality is preferably arranged, the decoding principle of other video data is also identical, is not given unnecessary details at this.
In another embodiment, if video unit 21 is a kind of with the digitized device of analog video, if the video data that will transmit is digitized continuous pictures, the speed during according to video digitizer, be generally 15 of per seconds, 24 to 30 pictures do not wait, requiredly decide according to it.Get 30 pictures of per second at this, so the time difference between each picture is 1/30 second, can select dynamic video compression (MovingPictures Experts Groups, MPEG) form compresses, data after overcompression are about one of percentage of former data volume or lower, so that transmit on wireless communication system.If the transmission static image file, then then processing unit 22 will be selected static video compression (Joint Photographic Experts Groups, JPEG) form will compress this picture much larger than 1/30 second the time difference of first picture and second picture transmission.
Fig. 2 illustrates the flow chart of method of the present invention.Can in said apparatus, carry out.This method comprises the following steps:
Step 30: processing unit 22 is selected first and second pictures;
Step 31: calculate the difference between first and second pictures, determine the compressed format that this picture is required according to this difference, this difference can be time difference or picture variable quantity, in this embodiment, compressed format can be dynamic video compression (Moving Pictures Experts Groups, MPEG), static video compression (Joint Photographic Experts Groups, JPEG) or the compressed format be familiar with of other present technique field personnel;
Step 32: this picture is carried out corresponding condensing routine, produce corresponding video compression data;
Step 33: this video compression data is added control code; And
Step 34: described video compression data and described control code are transferred to receiving system 24, and receiving system 24 can carry out decompression according to control code, obtains original picture.
Described above only is the preferred embodiments of the present invention, is not to be used to limit the scope of the invention.Under the situation of the spirit and scope that do not break away from the appended claims qualification, can carry out the variation and the modification of equivalence.
Claims (19)
1, a kind of method of transmitting video data, this video data comprise a plurality of pictures (frame), and this method comprises the following steps:
By decision process, determine the compressed format that these pictures are required;
Compress described video data according to described compressed format, produce corresponding video compression data;
Produce and described video signal packed data and the corresponding control code of described compressed format; And
Described video compression data and described control code are transferred to receiving system.
2, the method for claim 1, wherein said receiving system are utilized the described control code described video compression data that decompresses, and obtain described video data.
3, the method for claim 1, wherein said control code comprise corresponding to the parameter of described compressed format and corresponding to the compression time of described packed data.
4, the method for claim 1, wherein said decision procedure comprises:
In described a plurality of pictures, choose first picture and second picture;
Calculate the difference of described first picture and described second picture;
Judge the compressed format that these pictures are required according to described difference.
5, method as claimed in claim 4, described first picture and described second picture are continuous pictures.
6, method as claimed in claim 4, wherein, if described difference less than first reference value, is then compressed described video data with first compressed format.
7, method as claimed in claim 6, wherein, if described difference greater than second reference value, is then compressed described video data with second compressed format.
8, method as claimed in claim 7, wherein said difference is a time difference.
9, method as claimed in claim 7, wherein said difference are the picture changing values.
10, a kind of device of transmitting video data can transmit described video data to receiving system, and this device comprises:
Video unit is used to export described video data, and described video data comprises a plurality of pictures (frame);
Processing unit is connected to described video unit, selected part picture and determine the required compressed format of these pictures, and produce corresponding video compression data and produce control code according to described compressed format;
Transmission unit is connected to described processing unit, and described video compression data and described control code are transferred to described receiving system.
11, device as claimed in claim 10, wherein, described video unit is a video storage device.
12, device as claimed in claim 10, wherein, described control code is to comprise corresponding to the parameter of described compressed format and corresponding to the compression time of described packed data.
13, device as claimed in claim 10, wherein, described processing unit is chosen first picture and second picture in described a plurality of pictures, and calculates the difference of described first picture and described second picture, determines the compressed format that these pictures are required according to described difference.
14, device as claimed in claim 13, wherein, if described difference less than first reference value, is then compressed described video data with first compressed format.
15, device as claimed in claim 14, wherein, if described difference is then compressed described video data with the 3rd compressed format greater than described second reference value.
16, device as claimed in claim 15, wherein, described difference is the time difference.
17, device as claimed in claim 16, wherein, described difference is the picture changing value.
18, device as claimed in claim 10 wherein, transfers to described receiving system by wireless transmission method with described video compression data.
19, device as claimed in claim 10, wherein, described receiving system can utilize described control code to determine that described video compression data is any compressed format, and carries out corresponding decompression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101197127A CN1312930C (en) | 2003-12-03 | 2003-12-03 | Method and device for transmitting video |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101197127A CN1312930C (en) | 2003-12-03 | 2003-12-03 | Method and device for transmitting video |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1625264A true CN1625264A (en) | 2005-06-08 |
| CN1312930C CN1312930C (en) | 2007-04-25 |
Family
ID=34761410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101197127A Expired - Fee Related CN1312930C (en) | 2003-12-03 | 2003-12-03 | Method and device for transmitting video |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1312930C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444638C (en) * | 2006-01-26 | 2008-12-17 | 圆刚科技股份有限公司 | Multiple data stream output from multimedia data stream processing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0836329A4 (en) * | 1996-04-12 | 2002-09-04 | Sony Corp | Image encoder, image encoding method and medium on which image encoding program is recorded |
| US6490323B1 (en) * | 1999-06-17 | 2002-12-03 | Hewlett-Packard Company | Fast compressed domain processing using orthogonality |
-
2003
- 2003-12-03 CN CNB2003101197127A patent/CN1312930C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444638C (en) * | 2006-01-26 | 2008-12-17 | 圆刚科技股份有限公司 | Multiple data stream output from multimedia data stream processing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1312930C (en) | 2007-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102158553B (en) | Method and device for playing multi-media files for remote desktop | |
| AU767169B2 (en) | Method for enhancing video compression through automatic data analysis and profile selection | |
| KR100501173B1 (en) | Method for Displaying High-Resolution Pictures in Mobile Communication Terminal, Mobile Communication Terminal and File Format Converting System of the Pictures therefor | |
| US9300754B2 (en) | Information processing system, information processing apparatus, information processing method, and program | |
| US20150156557A1 (en) | Display apparatus, method of displaying image thereof, and computer-readable recording medium | |
| US6178204B1 (en) | Adaptive control of video encoder's bit allocation based on user-selected region-of-interest indication feedback from video decoder | |
| JPH10294757A (en) | Optimization method for band width to transmit compressed video data stream | |
| CN105025094A (en) | Multi-screen interaction method and system | |
| EP1567989A2 (en) | Apparatus and method for adapting graphics contents and system therefor | |
| JP2004512558A (en) | Method and system for remote video display via wireless projector | |
| CN102244786A (en) | Method and device for compressing and decompressing video data and mobile terminal | |
| US7369706B2 (en) | Image-data processing device, image-data processing method, image-data distributing device and image-data transmitting system | |
| CN115089966A (en) | Video rendering method and system applied to cloud game and related equipment | |
| WO1999010836A1 (en) | Real-time multimedia transmission | |
| CN111836092A (en) | Data processing method and device of virtual desktop and related components | |
| US20100049832A1 (en) | Computer program product, a system and a method for providing video content to a target system | |
| CN1312930C (en) | Method and device for transmitting video | |
| Alkhalili et al. | A survey of volumetric content streaming approaches | |
| CN100539703C (en) | Method of compressing data and system | |
| CN108377400A (en) | A kind of image transmitting optimization method, system and its apparatus | |
| Woodward et al. | Wireless 3d cad viewing on a pda device | |
| CN201821460U (en) | Coding device | |
| CN102215400B (en) | Buffer size reduction for wireless analog TV receivers | |
| Thai et al. | A hybrid remote display scheme for interactive applications in band-limited environment | |
| EP0647910A1 (en) | Method and system for efficiently transmitting multimedia data in a distributed data processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070425 Termination date: 20101203 |