CN101964173B - A kind of fixing chain length improves the method for display frequency - Google Patents
A kind of fixing chain length improves the method for display frequency Download PDFInfo
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Abstract
The invention discloses a kind of method that fixing chain length improves display frequency, it comprises and pre-sets step and aobvious step is sent in intercepting below, wherein, pre-sets step and comprises: A1, arrange number of significant digit L; Intercepting send aobvious step to comprise: B1, for display data, be L by its Data-Link contraction in length, show as amended display data.The present invention is by shortening display data chain length, thus corresponding shortening displaying time, therefore, within the equal time period, add display effective degree, improve display refreshing frequency, thus improve display quality, avoid the excessive loss of brightness, and effectively improve low GTG display capabilities under the prerequisite that display precision remains constant.
Description
Technical field
The present invention relates to the control of LED display, in particular, a kind of fixing chain length improves the method for display frequency.
Background technology
In LED display, the display quality of LED display and the display frequency of LED display, namely refreshing frequency has the relation of direct ratio, and display frequency is higher, and image on screen flickering is less, and stability is also higher, and display quality is also higher.
Such as, but in prior art, the method for various raising display frequency is all be condition with sacrificing luminance, is reached the raising of display frequency by the clock frequency changing control device, do not only that power consumption is higher like this, and display brightness is lower.
Therefore, prior art existing defects, needs to improve.
Summary of the invention
Technical matters to be solved by this invention is by improving display frequency to promote display quality.
Technical scheme of the present invention is as follows:
Fixing chain length improves a method for display frequency, and it comprises and pre-sets step and aobvious step is sent in intercepting below, wherein, pre-sets step and comprises: A1, arrange number of significant digit L; Intercepting send aobvious step to comprise: B1, for display data, be L by its Data-Link contraction in length, show as amended display data.
Be applied to technique scheme, in described method, before described steps A 1, also perform steps A 0: the figure place N obtaining described display data; Further, in described steps A 1, arrange according to N value or select described number of significant digit L.
Be applied to each technical scheme above-mentioned, in described method, in described step B1, for display data, intercept L bit data from a high position and export, show as amended display data.
Being applied to each related art scheme above-mentioned, in described method, in described step B1, according to described number of significant digit L, for the described display data of N bit length, is 1 from first high position, intercepts L bit data in turn and exports.
Be applied to each related art scheme above-mentioned, in described method, in described step B1, for display data, intercept L bit data from most significant digit and export, show as amended display data.
Be applied to each related art scheme above-mentioned, in described method, before described step B1, also perform step B0: for display data, judge its highest nonzero digit M; Further, in described step B1, for display data, from M position, intercept L bit data export.
Be applied to technique scheme, in described method, after described step B0, before described step B1, also perform step B01: judge whether the figure place N of described display data is greater than L, otherwise directly the described display data of output show.
Be applied to technique scheme, in described method, after described step B01, before described step B1, also perform step B02: judge whether M is greater than L, otherwise from L position, directly intercept the output of L bit data.
Be applied to each related art scheme above-mentioned, in described method, after described step B1, also perform step B2: adopt described amended display data to show.
Be applied to technique scheme, in described method, in step B2, within a time period, according to the display data shortening data chain length after amendment, shorten the displaying time of corresponding display data, increase the effective degree of data display.
Adopt such scheme, the present invention is by shortening display data chain length, thus corresponding shortening displaying time, therefore, within the equal time period, add display effective degree, improve display refreshing frequency, thus improve display quality, avoid the excessive loss of brightness, and effectively improve low GTG display capabilities under the prerequisite that display precision remains constant.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment;
Fig. 2 is the schematic diagram of another embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
In LED control system, display frequency, or the display frequency being called complete GTG, correspond to the display cycle of complete GTG, be the frequency corresponding to displaying time of complete GTG, its highest switching response frequency with whole control system, LED luma data numerical digit are relevant.Wherein, the complete GTG display cycle is that each numerical value of luma data all experiences full-time total length required for clear and definite corresponding output procedure.For the ignition frequency of some significance bits, being that LED corresponding to certain of luma data is per second lights number of times; The output effective degree of a bit value, refers in the display cycle, the corresponding and spaced effective output number of times more than a fundamental clock transformation period of a bit value.The output effective frequency of a bit value, refers to that the output effective degree of a bit value is multiplied by complete GTG display frequency corresponding to it.
One embodiment of the present of invention are, a kind of fixing chain length improves the method for display frequency, is a kind of display mode of fixing display data precision, and it comprises and pre-sets step and aobvious step is sent in intercepting below.
Wherein, pre-set step to comprise: A1, arrange number of significant digit L; Such as, number of significant digit L be 4,5, a natural number within the scope of 6......255.And for example, number of significant digit L be 4,5, a natural number within the scope of 6......128,129......255,256......510,511......65535.Preferably, described number of significant digit L is set according to the figure place of described display data; Such as, the figure place of described display data is 16, then L can be set to 12,10,8 or 7 etc., and and for example, the figure place of described display data is 256, then L can be set to 200,180,150 or 100 etc.On this basis, a preferred example is, before described steps A 1, also performs steps A 0: the figure place N obtaining described display data; Further, in described steps A 1, described number of significant digit L is set according to N value; Now, usual described number of significant digit L is less than N.Or, according to certain maximum brightness loss percentage, described number of significant digit L is set; Such as, suppose that maximum brightness loss percentage higher than 10%, then must not arrange described number of significant digit L accordingly.In above-mentioned each example, the relation table of a N value and L value can also be set up, select described number of significant digit L according to N value.Or, the relation table of a maximum brightness loss percentage and L value can also be set up, select described number of significant digit L according to maximum brightness loss percentage.
Intercepting send aobvious step to comprise: B1, for display data, be L by its Data-Link contraction in length, show as amended display data.It is pointed out that as space is limited, example below selects the data of less than 24 to be described usually, but the present invention and the figure place of each embodiment to display data thereof do not do extra restriction, only need to shorten its Data-Link length.
An example is, in described step B1, for display data, intercepts L bit data and exports, show as amended display data from a high position.Such as, for display data, intercept L bit data from most significant digit and export, show as amended display data.Suppose that a certain display data are 16, as shown in the table:
| Figure place | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 |
When L is 13, then thrown aside for minimum 3 of former display data, amended display data are 13, as shown in the table:
| Figure place | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 0 |
When L is other numerical value, by that analogy, do not repeat.
And for example, for display data, intercept L bit data from a secondary high position and export, show as amended display data.Suppose that a certain display data are 12, as shown in the table:
| Figure place | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 |
When L is 10, then thrown aside for minimum 3 of former display data, amended display data are 13, as shown in the table:
| Figure place | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 |
When L is other numerical value, by that analogy, do not repeat.
Another example is, in described step B1, according to described number of significant digit L, for the described display data of N bit length, is 1 from first high position, intercepts L bit data in turn and exports.Such as, a certain display data are 16, i.e. N=16 is as shown in the table:
| Figure place | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 |
First high position be 1 figure place be the 13rd, when L is 9, then thrown aside for the highest 3 and minimum 4 of former display data, amended display data are 9, as shown in the table:
| Figure place | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 |
When L is other numerical value, by that analogy, do not repeat.
And for example, N=8, a certain display data are 8, as shown in the table:
| Figure place | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 |
First high position be 1 figure place be the 6th, when L is 6, then former display data is the highest 2 and thrown aside, and amended display data are 6, as shown in the table:
| Figure place | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 1 | 1 | 0 | 0 | 1 | 0 |
When L is other numerical value, by that analogy, do not repeat.
Be applied to above-mentioned each example, before described step B1, also perform step B0: for display data, judge its highest nonzero digit M; Further, in described step B1, for display data, from M position, intercept L bit data export.Now, the displaying time of displaying time far below former display data of data is shown after amendment.
Such as, as shown in Figure 1, a certain display data are 16, and the highest nonzero digit M is 13, and L is 8, residue 8 after intercepting.
And for example, as shown in Figure 2, a certain display data are 8, and the highest nonzero digit M is 7, and L is 5, residue 5 after intercepting.
And for example, a certain display data are 18, as shown in the table:
| Figure place | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 |
Its highest nonzero digit M is the 14th, when L is 8, in described step B1, for display data, intercepts 8 bit data and export from the 14th, then thrown aside for the highest 4 and minimum 6 of former display data, amended display data are 8, as shown in the table:
| Figure place | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
When L is other numerical value, by that analogy, do not repeat.
Be applied to above-mentioned each relevant example, after described step B0, before described step B1, also perform step B01: judge whether the figure place N of described display data is greater than L, otherwise directly the described display data of output show.That is, if when the numerical value of L is greater than the figure place N of described display data, intercepting need not be performed and send aobvious step, directly export described display data and show.If when the numerical value of L is less than the figure place N of described display data, then can step B1 be performed.
Such as, a certain display data are 12, as shown in the table:
| Figure place | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 1 |
When L is 20, in described step B1, for display data, export described display data and show, amended display data are former display data.Or need not revise, directly export.
Be applied to example, after described step B01, before described step B1, also perform step B02: judge whether M is greater than L, otherwise from L position, directly intercept the output of L bit data.That is, if when the numerical value of L is greater than the highest nonzero digit M of described display data, from L position, directly intercepts L bit data export.
Such as, a certain display data are 24, as shown in the table:
| Figure place | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 |
Its highest nonzero digit M is the 19th, and when L is 20, in described step B1, for display data, from the 20th, directly intercept 20 bit data export, amended display data are 20, as shown in the table:
| Figure place | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Data | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 |
If when the numerical value of L is less than the figure place M of described display data, then can intercepts L bit data and export from M position.
Be applied to above-mentioned arbitrary example, in described method, after described step B1, also perform step B2: adopt described amended display data to show, such as, amended display data deliver to driving chip, drive corresponding LED luminous or not luminous by it, thus show in LED display, obtain display effect.Such as, in step B2, within a time period, according to the display data shortening data chain length after amendment, shorten the displaying time of corresponding display data, increase the effective degree of data display, thus improve display refreshing frequency.
Like this, will part luma be lost at low level, but luminance loss leads lower, thus low GTG display capabilities can be promoted under the prerequisite that display precision remains constant.
The ultimate principle of the present invention and each embodiment thereof is, to improve physics refreshing frequency for target, because the number of times of unit interval is exactly frequency, therefore only needs the number of times increasing effective display translation, just can reach good display effect.
Below the present invention and each embodiment thereof are described further.For the audience, effective greyscale resolution of its naked eyes is no more than 10, such as 8, therefore, in theory, naked eyes cannot differentiate the luminance difference of less than 2%, therefore, suitably can delete part display data, bear certain loss at the highest luminance area or minimum brightness region, and improve display refreshing frequency.
Preferred example is, for height to low data, only from the highest nonzero digit M, retains P bit data, and specifically, data highest significant position only down extends display resolving accuracy to 8 or 10 automatically in turn; Or only retain the high L position that highest significant position M starts, for display; Thus on the basis of shortening whole display cycle time, promote display refreshing frequency.
Such as, corresponding to 65536 grades of display GTGs, suppose 4 16 display data corresponding on series display Data-Link, with binary code display, be respectively 1010111010101010,0110101010101011,0010111010101100,0000001110101101.Because naked eyes are for the relative adaptation sexual performance of brightness, different brightness is only that high number of significant digit realizes Presentation Function; Choose enough sufficient 8 the long display formats of visual effect; Respectively from the highest nonzero digit of these display data, intercept and obtain 48 bit data: 10101110,11010101,10111010,11101011.All the other display, according to by that analogy, like this, because display data chain length is shortened, so make displaying time be shortened, therefore, in the equal time period, show effective degree increase, show refreshing frequency and improve.
It should be noted that, the mutual combination of above-mentioned each technical characteristic, forms each embodiment, should be considered as the scope that instructions of the present invention is recorded.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (8)
1. fixing chain length improves a method for display frequency, it is characterized in that, comprises the following steps,
Pre-set step: A1, number of significant digit L is set;
Aobvious step is sent in intercepting: B1, for display data, be L by its Data-Link contraction in length, show as amended display data; After described step B1, also perform step B2: adopt described amended display data to show, amended display data deliver to driving chip, drive corresponding LED, LED display shows by it;
In described step B1, for display data, intercept L bit data from a high position and export, show as amended display data; Wherein, according to described number of significant digit L, for the described display data of N bit length, be 1 from first high position, intercept L bit data in turn and export.
2. method according to claim 1, is characterized in that, before described steps A 1, also performs steps A 0: the figure place N obtaining described display data;
Further, in described steps A 1, arrange according to N value or select described number of significant digit L.
3. method according to claim 1, is characterized in that, in described step B1, for display data, intercepts L bit data and exports, show as amended display data from most significant digit.
4. method according to claim 1, is characterized in that, before described step B1, also performs step B0: for display data, judge its highest nonzero digit M;
Further, in described step B1, for display data, from M position, intercept L bit data export; In the equal time period, display effective degree increases, and display refreshing frequency improves.
5. method according to claim 4, is characterized in that, after described step B0, before described step B1, also performs step B01: judge whether the figure place N of described display data is greater than L, otherwise directly the described display data of output show.
6. method according to claim 5, is characterized in that, after described step B01, before described step B1, also performs step B02: judge whether M is greater than L, otherwise from L position, directly intercept the output of L bit data.
7. according to the arbitrary described method of claim 1 to 6, it is characterized in that, after described step B1, also perform step B2: adopt described amended display data to show.
8. method according to claim 7, is characterized in that, in step B2, within a time period, according to the display data shortening data chain length after amendment, shortens the displaying time of corresponding display data, increases the effective degree of data display.
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| CN201010286513.5A CN101964173B (en) | 2010-09-19 | 2010-09-19 | A kind of fixing chain length improves the method for display frequency |
| US13/235,799 US8842141B2 (en) | 2010-09-19 | 2011-09-19 | Method of uniform distribution for increasing display rate |
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| JP2001308710A (en) * | 2000-04-21 | 2001-11-02 | Sony Corp | Modulation circuit, and picture display device and modulation method using the same |
| US6903732B2 (en) * | 2001-01-15 | 2005-06-07 | Matsushita Electric Industrial Co., Ltd. | Image display device |
| EP2293282A1 (en) * | 2003-04-02 | 2011-03-09 | Sharp Kabushiki Kaisha | Driving device of an image display device, program and storage medium thereof, image display device, and television receiver |
| CN101426079A (en) * | 2007-11-02 | 2009-05-06 | 深圳Tcl工业研究院有限公司 | Video image display processing method and apparatus thereof |
| CN101516152B (en) * | 2009-01-07 | 2014-05-07 | 北京巨数数字技术开发有限公司 | System and method for implementing synchronous refreshing |
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