CN101883277A - Low resolution video file playing method and device - Google Patents
Low resolution video file playing method and device Download PDFInfo
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- CN101883277A CN101883277A CN 200910107244 CN200910107244A CN101883277A CN 101883277 A CN101883277 A CN 101883277A CN 200910107244 CN200910107244 CN 200910107244 CN 200910107244 A CN200910107244 A CN 200910107244A CN 101883277 A CN101883277 A CN 101883277A
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Abstract
The invention relates to a low resolution video file playing method which comprises the steps of: a, judging whether the resolution of a video signal reaches the resolution supported by video playing equipment, executing the step d if the resolution of the video signal reaches the resolution supported by the video playing equipment, executing the step b if not; b, moving an image of the video signal to the left upper angle of a playing region of the video playing equipment; c, carrying out transverse and horizontal interpolation operation on the image of the video signal; and d, ensuring that the video playing equipment plays the video signal. The invention also provides a playing device. The invention ensures that the resolution of the video file is expanded into a standard video resolution through carrying out moving and interpolation amplification treatment on the video signal of a low resolution video file, thereby displaying the image in a full screen when playing, and improving the playing quality of the low resolution video file.
Description
Technical field
The present invention relates to the video playback field, particularly a kind of broadcast is lower than the method and the device of the video file of the resolution that equipment supports.
Background technology
Along with the development of technology, increasing consumer electronics product (for example mobile phone, MP4, handheld game machine etc.) is popularized.These consumer electronics products (for example dial or receive calls, audio plays etc.) except the function of itself also have the video flowing playing function usually, for example televise etc.
Because the hardware of most of consumer electronics products poor relatively (for example memory space is less, display screen is less etc.), the resolution that is fit to the video file that these consumer electronics products play is also lower.In addition, be subjected to the restriction of wireless transmission bandwidth, the resolution of the video file of mobile TV transmission is also lower.
The video file of these low resolution can satisfy the broadcast demand of part small screen device.Yet, for the bigger equipment of some screens (for example television set etc.),, will make these equipment can only show very little video pictures because its resolution does not reach the resolution that these video playback apparatus are supported, most of zone on the screen then is blank, has had a strong impact on visual effect.
Summary of the invention
The technical problem to be solved in the present invention is, the resolution that does not reach the video playback apparatus support because of resolution when playing at above-mentioned video file causes image problem not all over the screen, and a kind of low resolution video file playing method and device are provided.
The technical scheme that the present invention solves the problems of the technologies described above is, a kind of low resolution video file playing method is provided, and may further comprise the steps:
(a) whether the resolution of judging vision signal reaches the resolution that video playback apparatus is supported, if the resolution of vision signal reaches the resolution that video playback apparatus is supported, and execution in step (d) then, otherwise execution in step (b);
(b) image of vision signal is moved to the upper left corner of video playback apparatus play area;
(c) image to vision signal carries out horizontal and vertical interpolation arithmetic;
(d) make video playback apparatus play described vision signal.
In low resolution video file playing method of the present invention, described vision signal is a digital video signal, and described step (a) also comprises before: the analog video signal of input is converted to digital video signal.
In low resolution video file playing method of the present invention, described step (d) comprising:
(d1) digital video signal is converted to analog video signal;
(d2) play described analog video signal.
In low resolution video file playing method of the present invention, described step (c) comprising:
(c1) level that detects vision signal is effectively counted and vertical effectively line number;
(c2) effectively count and vertical effectively line number calculated level multiplication factor and vertical multiplication factor according to described level;
(c3) with vertical multiplication factor vision signal is carried out horizontal and vertical interpolation arithmetic according to described horizontal multiplication factor.
In low resolution video file playing method of the present invention, before being converted to digital video signal, the analog video signal with input also comprises: from the high-frequency signal that receives, modulate analog video signal.
The present invention also provides a kind of low resolution video file playing device, comprising:
The resolution detecting unit is used to judge whether the resolution of vision signal reaches the resolution that the video playback unit is supported;
The image mobile unit when being used for resolution in vision signal and not reaching the resolution of broadcast unit support moves to the image of this vision signal the upper left corner of video playback apparatus play area;
The image amplifying unit is used for that image to image mobile unit processed video signal carries out laterally and/or interpolation arithmetic longitudinally;
The video playback unit is used to play the vision signal after the image amplifying unit amplifies.
In low resolution video file playing device of the present invention, described vision signal is a digital video signal, also comprises first converting unit that is used for analog video signal is converted to digital video signal.
In low resolution video file playing device of the present invention, described video playback unit comprises and is used for simulation broadcast unit that digital video signal is converted to second converting unit of analog video signal and is used to play analog video signal.
In low resolution video file playing device of the present invention, described image amplifying unit comprises:
Detection sub-unit, the level that is used to detect vision signal is effectively counted and vertical effectively line number;
Computation subunit is used for effectively counting and vertical effectively line number calculated level multiplication factor and vertical multiplication factor according to described level;
The interpolation subelement is used for vertical multiplication factor vision signal being carried out horizontal and vertical interpolation arithmetic according to described horizontal multiplication factor.
In low resolution video file playing device of the present invention, also comprise:
Signal separation unit is used for modulating analog video signal from the high-frequency signal that receives.
The present invention has following beneficial effect: move and the interpolation processing and amplifying by the vision signal with the video file of low resolution, thereby make the resolution of video file be extended for normal video resolution and when playing, make image demonstration all over the screen, improved the play quality of low resolution video file.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structured flowchart of low resolution video file playing device embodiment of the present invention;
Fig. 2 is the structured flowchart of another embodiment of low resolution video file playing device of the present invention;
Fig. 3 is the flow chart of low resolution video file playing method embodiment of the present invention;
Fig. 4 is the flow chart of another embodiment of low resolution video file playing method of the present invention;
Fig. 5 is the circuit diagram of low resolution video file playing device among Fig. 1;
Fig. 6 is the circuit diagram of first converting unit among Fig. 2.
Embodiment
The low resolution video signal that receives by wireless network or cable network is moved in the present invention and interpolation is amplified, and makes the video file of low resolution obtain reasonable result of broadcast on relevant video playback apparatus.
As shown in Figure 1, be the structured flowchart of the embodiment of low resolution video file playing device of the present invention.This device comprises resolution detecting unit 12, image mobile unit 14, image amplifying unit 16 and video playback unit 18.Certainly, said apparatus also comprises the related elements in the existing consumer electronics product, for example signal receiving unit, memory cell etc.Playing device among this embodiment can be used for the digital signal of low resolution is handled, and improves its result of broadcast in the digital broadcast device.
When image mobile unit 14 is used for resolution in vision signal and does not reach the resolution of broadcast unit support the image of this vision signal is moved to the upper left corner of play area.Because when vision signal is play, the general demonstration placed in the middle of image, and when image amplified, image amplifying unit 16 was that reference origin is amplified downwards, to the right with the picture upper left corner usually, therefore must image be moved to the upper left corner of play area by this image mobile unit 14.
As shown in Figure 2, be the structured flowchart of second embodiment of low resolution video file playing device of the present invention.Playing device among this embodiment is except comprising resolution detecting unit 22, image mobile unit 24, image amplifying unit 26 and video playback unit 28, also comprise first converting unit 21, and video playback unit 28 comprises second converting unit 281 and simulation broadcast unit 282.The analog signal (for example CVBS signal) that playing device among this embodiment can be used for low resolution is handled, and improves its result of broadcast in the simulation playing device.
First converting unit 21 is used for analog video signal is converted to digital video signal, and second converting unit 281 is used for digital video signal is converted to analog video signal.After the analog video signal (for example TV signal) that receives by wireless or cable network is converted to digital video signal through first converting unit 21, handle through resolution detecting unit 22, image mobile unit 24, image amplifying unit 26, digital video signal after obtaining to amplify, the digital video signal after this amplification are play by 282 decodings of simulation broadcast unit after second converting unit 281 is converted to analog video signal (for example CVBS signal or YUV signal).
Especially, above-mentioned horizontal multiplication factor is:
(level effectively counts/level of video playback unit desire output count) * 65536
Above-mentioned vertical multiplication factor is:
(the vertical line number of vertical effectively line number/video playback unit desire output) * 65536
In the above-described embodiments, when comprising vision signal in the wireless signal that receives, also can from the high-frequency signal that receives, modulate analog video signal, by other unit the analog video signal that modulates be carried out processing and amplifying then by a signal separation unit.
As shown in Figure 3, be the flow chart of low resolution video file playing method embodiment of the present invention.This method can be used for realizing the amplification of digital video signal, and it may further comprise the steps:
Step S31: whether the resolution of judging vision signal reaches the resolution that video playback apparatus is supported, if the resolution of vision signal reaches the resolution that video playback apparatus is supported, and execution in step S34 then, otherwise execution in step S32.
Step S32: the upper left corner that the image of vision signal is moved to the video playback apparatus play area.
Step S33: the image to vision signal carries out horizontal and vertical interpolation arithmetic.HFS in image may produce the characteristic pattern that does not have in the original image after the interpolation processing and amplifying, can carry out low-pass filtering to the vision signal after amplifying.When specific implementation, above-mentioned processing and amplifying can adopt a leggy, nonlinear filter to carry out the interpolation conversion of horizontal direction (laterally), and the interpolation filter that strengthens by a pointwise carries out the interpolation conversion of vertical direction (vertically).
When specific implementation, can realize by following steps in this step: the level that at first detects vision signal is effectively counted and vertical effectively line number; Effectively count and vertical effectively line number calculated level multiplication factor and vertical multiplication factor according to described level then; At last with vertical multiplication factor vision signal is carried out horizontal and vertical interpolation arithmetic according to described horizontal multiplication factor.
Step S34: make video playback apparatus play the vision signal of amplifying through interpolation.
Method of the present invention also can realize the interpolation amplification of analog video signal.As shown in Figure 4, in second embodiment of low resolution video file playing method of the present invention, comprising:
Step S41: will be converted to digital video signal by analog video signal (for example YUV signal) wireless or that cable network receives.
Step S42: whether the resolution of judging vision signal reaches the resolution that video playback apparatus is supported, if the resolution of vision signal reaches the resolution that video playback apparatus is supported, and execution in step S34 then, otherwise execution in step S32.
Step S43: the upper left corner that the image of vision signal is moved to the video playback apparatus play area.
Step S44: the image to vision signal carries out horizontal and vertical interpolation arithmetic.
Step S45: digital video signal is converted to analog video signal (for example CVBS signal).
Step S46: play analog video signal.
In the above-described embodiments, when comprising vision signal in the wireless signal that receives, also can from the high-frequency signal that receives, modulate analog video signal, by other unit the analog video signal that modulates be carried out processing and amplifying then by a signal separation unit.
As Fig. 5, shown in Figure 6, be the embodiment circuit diagram of the utility model low resolution video file playing device.Wherein U5 is used to detect video resolution, mobile image, enlarged image; U9 is used for transferring analog video signal to digital video signal.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. a low resolution video file playing method is characterized in that, may further comprise the steps:
(a) whether the resolution of judging vision signal reaches the resolution that video playback apparatus is supported, if the resolution of vision signal reaches the resolution that video playback apparatus is supported, and execution in step (d) then, otherwise execution in step (b);
(b) image of vision signal is moved to the upper left corner of video playback apparatus play area;
(c) image to vision signal carries out horizontal and vertical interpolation arithmetic;
(d) make video playback apparatus play described vision signal.
2. low resolution video file playing method according to claim 1 is characterized in that, described vision signal is a digital video signal, and described step (a) also comprises before: the analog video signal of input is converted to digital video signal.
3. low resolution video file playing method according to claim 2 is characterized in that, described step (d) comprising:
(d1) digital video signal is converted to analog video signal;
(d2) play described analog video signal.
4. according to each described low resolution video file playing method among the claim 1-3, it is characterized in that described step (c) comprising:
(c1) level that detects vision signal is effectively counted and vertical effectively line number;
(c2) effectively count and vertical effectively line number calculated level multiplication factor and vertical multiplication factor according to described level;
(c3) with vertical multiplication factor vision signal is carried out horizontal and vertical interpolation arithmetic according to described horizontal multiplication factor.
5. according to claim 2 or 3 described low resolution video file playing methods, it is characterized in that, before the analog video signal with input is converted to digital video signal, also comprise: from the high-frequency signal that receives, modulate analog video signal.
6. a low resolution video file playing device is characterized in that, comprising:
The resolution detecting unit is used to judge whether the resolution of vision signal reaches the resolution that the video playback unit is supported;
The image mobile unit when being used for resolution in vision signal and not reaching the resolution of broadcast unit support moves to the image of this vision signal the upper left corner of video playback apparatus play area;
The image amplifying unit is used for that image to image mobile unit processed video signal carries out laterally and/or interpolation arithmetic longitudinally;
The video playback unit is used to play the vision signal after the image amplifying unit amplifies.
7. low resolution video file playing device according to claim 6 is characterized in that, described vision signal is a digital video signal, also comprises first converting unit that is used for analog video signal is converted to digital video signal.
8. low resolution video file playing device according to claim 7, it is characterized in that described video playback unit comprises and is used for simulation broadcast unit that digital video signal is converted to second converting unit of analog video signal and is used to play analog video signal.
9. according to each described low resolution video file playing device among the claim 6-8, it is characterized in that described image amplifying unit comprises:
Detection sub-unit, the level that is used to detect vision signal is effectively counted and vertical effectively line number;
Computation subunit is used for effectively counting and vertical effectively line number calculated level multiplication factor and vertical multiplication factor according to described level;
The interpolation subelement is used for vertical multiplication factor vision signal being carried out horizontal and vertical interpolation arithmetic according to described horizontal multiplication factor.
10. according to claim 7 or 8 described low resolution video file playing devices, it is characterized in that, also comprise:
Signal separation unit is used for modulating analog video signal from the high-frequency signal that receives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910107244 CN101883277A (en) | 2009-05-08 | 2009-05-08 | Low resolution video file playing method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910107244 CN101883277A (en) | 2009-05-08 | 2009-05-08 | Low resolution video file playing method and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618943A (en) * | 2013-11-27 | 2014-03-05 | 深圳创维－Rgb电子有限公司 | Video data display method of display terminal and display terminal |
| CN105681720A (en) * | 2016-03-18 | 2016-06-15 | 青岛海信电器股份有限公司 | Video playing processing method and device |
| CN105744358A (en) * | 2016-03-18 | 2016-07-06 | 青岛海信电器股份有限公司 | Video play processing method and device |
| CN105812923A (en) * | 2016-03-18 | 2016-07-27 | 青岛海信电器股份有限公司 | Play processing method and device based on video on demand |
| CN106604118A (en) * | 2015-10-16 | 2017-04-26 | 惠州Tcl移动通信有限公司 | Playing equipment and method |
-
2009
- 2009-05-08 CN CN 200910107244 patent/CN101883277A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618943A (en) * | 2013-11-27 | 2014-03-05 | 深圳创维－Rgb电子有限公司 | Video data display method of display terminal and display terminal |
| CN106604118A (en) * | 2015-10-16 | 2017-04-26 | 惠州Tcl移动通信有限公司 | Playing equipment and method |
| CN105681720A (en) * | 2016-03-18 | 2016-06-15 | 青岛海信电器股份有限公司 | Video playing processing method and device |
| CN105744358A (en) * | 2016-03-18 | 2016-07-06 | 青岛海信电器股份有限公司 | Video play processing method and device |
| CN105812923A (en) * | 2016-03-18 | 2016-07-27 | 青岛海信电器股份有限公司 | Play processing method and device based on video on demand |
| CN105744358B (en) * | 2016-03-18 | 2018-09-14 | 青岛海信电器股份有限公司 | The processing method and processing device of video playing |
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Application publication date: 20101110 |