CN101742165A - Method for indicating digital television signal and digital television using same - Google Patents
Method for indicating digital television signal and digital television using same Download PDFInfo
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- CN101742165A CN101742165A CN200810217858A CN200810217858A CN101742165A CN 101742165 A CN101742165 A CN 101742165A CN 200810217858 A CN200810217858 A CN 200810217858A CN 200810217858 A CN200810217858 A CN 200810217858A CN 101742165 A CN101742165 A CN 101742165A
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Abstract
The invention discloses a method for indicating a digital television signal and a digital television using the same. The indicating method comprises the following steps of: acquiring an intensity level L of the digital television signal; acquiring a quality index C of the digital television signal; giving a comprehensive quality level Q according to the intensity level L and the quality index C of the digital television signal; and displaying the comprehensive quality level Q of the digital television signal. The digital television is characterized by adopting the signal indicating method. The method for indicating the digital television signal gives the comprehensive quality level, and is simple and easy to identify according to the signal intensity and quality of the digital television signal.
Description
Technical field
The present invention relates to digital TV field, more particularly, the Digital Television that relates to a kind of digital television signal comprehensive quality indicating means and adopt this signal indicating means.
Background technology
Interference signal can show in the effect of image when one of difference of digital television signal and anolog TV signals was that anolog TV signals are disturbed, and digital television signal is when disturbed, error correcting capability by DTV receiver self, image may not can be affected, when the intensity of interference signal surpasses the error correcting capability of native system, mosaic can occur, even can't show.Digital Television might be when signal be very strong like this, causes receiving bad equally because of interference signal is very strong, and promptly signal strength signal intensity is very strong might not obtain good reception.
The signal condition of Digital Television indication at present has two kinds of methods usually, and first kind is passed through shows signal intensity, promptly reads the high-frequency signal voltage amplitude or reads the power that AGC voltage comes indirect index signal amplitude or judges signal; Second kind of good and bad state that adopts signal strength signal intensity (the same) and signal quality (SignalQuality, as read the carrier-to-noise ratio C/N of high-frequency signal) to combine shows signal with first method.
First method only shows the power of received signal, advantage is very directly perceived, and the user can understand at a glance, but the state that in fact it can not complete shows signal, when signal is strong (the high-frequency signal voltage amplitude is big), the reception meeting of Digital Television is relatively good in theory, but in fact, when signal is strong, also may be subjected to bigger noise jamming simultaneously, like this, signal quality will descend, and the image that Digital Television receives may have mosaic even can not show fully.
Second kind of indicating means uses " signal strength signal intensity " and " signal quality " to come the index signal situation on Digital Television simultaneously, and as shown in Figure 1, A represents " signal strength signal intensity ", and B represents " signal quality ".Because the TV user major part all is to have no the consumer of professional knowledge, they have only the branch of " good " or " bad " to the notion of TV signal.The bar that shows two kinds of signal indexs, concerning them, be difficult to understand, it is very strong particularly to work as signal, and signal quality is very poor when causing the image mosaic maybe can not show, a lot of consumers can feel to feel uncertain, even take place sometimes to complain or return of goods incident, and the goods producer often will spend significant cost and go to explain and propagate these professional notions.
Summary of the invention
The technical problem to be solved in the present invention is, at the above-mentioned signal indicating means of prior art index signal state or elusive defective comprehensively, the Digital Television that a kind of digital television signal comprehensive quality indicating means is provided and adopts this signal indicating means.
The technical solution adopted for the present invention to solve the technical problems is: a kind of digital television signal indicating means is provided, it is characterized in that, may further comprise the steps:
(S1) obtain the strength grade L of digital television signal;
(S2) obtain the quality index C of digital television signal;
(S3), provide a comprehensive quality grade Q according to the strength grade L and the quality index C of digital television signal;
(S4) the comprehensive quality grade Q of the described digital television signal of demonstration.
In digital television signal indicating means of the present invention, also be included in described step (S1) and before digital television signal be divided into the step of n grade by intensity, n is the natural number more than or equal to 3.
In digital television signal indicating means of the present invention, the quality index C described in the described step (S2) is the error rate of digital television signal.
In digital television signal indicating means of the present invention, also comprise the steps:
Determine i the maximum bit error rate C1i of the digital television signal under the signal strength scale Li when pairing image mosaic do not occur;
Determine i the error rate C2i of the digital television signal under the signal strength scale Li when a small amount of mosaic appears in pairing image;
Determine that i the digital television signal under the signal strength scale Li a large amount of mosaics or image occur at pairing image and become minimum bit-error rate C3i can not show the time;
In the described step (S3),, provide a comprehensive quality grade Q, further comprise according to the strength grade L and the quality index C of digital television signal:
Digital television signal intensity is the value of Li and error rate Ca when satisfying Ca 〉=C3i, and digital television signal comprehensive quality grade Q is 0;
Digital television signal intensity is the value of Li and error rate Ca when satisfying C2i＜Ca＜C3i, and digital television signal comprehensive quality grade Q is Q1;
Digital television signal intensity is that the value of Li and error rate Ca satisfies C1i＜Ca≤C2i and i＞1 o'clock, and digital television signal comprehensive quality grade Q is Q2;
Digital television signal intensity is the value of Li and error rate Ca when satisfying C1i＜Ca≤C2i and i=1, and digital television signal comprehensive quality grade Q is Q1;
Digital television signal intensity is the value of Li and error rate Ca when satisfying Ca≤C1i, and digital television signal comprehensive quality grade Q is Qi;
I=1 in each step, 2 ..., n.
In digital television signal indicating means of the present invention, the value of described n is 5.
Another object of the present invention is a kind of Digital Television that adopts each described digital television signal indicating means of claim 1 to 5.
Implement digital television signal indicating means of the present invention, have following beneficial effect: digital television signal indicating means of the present invention is taken into account digital television signal intensity and quality, provides a comprehensive quality grade, is simple and easy to identification.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a prior art signal condition indicator diagram;
Fig. 2 is the flow chart of digital television signal indicating means of the present invention;
Fig. 3 is a signal quality indication schematic diagram in the digital television signal indicating means preferred embodiment of the present invention;
Fig. 4 is that no signal or signal synthesis quality are 0 o'clock indication schematic diagram in the digital television signal indicating means preferred embodiment of the present invention.
Embodiment
As shown in Figure 2, in digital television signal indicating means preferred embodiment of the present invention, may further comprise the steps:
(S1) obtain the strength grade L of digital television signal;
(S2) obtain the quality index C of digital television signal;
(S3), provide a comprehensive quality grade Q according to the strength grade L and the quality index C of digital television signal;
(S4) the comprehensive quality grade Q of the described digital television signal of demonstration.
Also be included in step (S1) before, digital television signal is divided into the step of n grade by intensity, each grade is represented with Li, i=1, and 2 ..., n, n are the natural number more than or equal to 3.
In the preferred embodiment of digital television signal indicating means of the present invention, the value of n is 5, and the intensity of digital television signal is divided into five grade: L1, L2, L3, L4, L5, and signal strength signal intensity L1 to L5 strengthens gradually, L1 is weak signal strength, and L5 is a strongest signal strength.
In the preferred embodiment of digital television signal indicating means of the present invention, signal quality C is the error rate of digital television signal.
In the preferred embodiment of digital television signal indicating means of the present invention, also comprise the steps:
Determine i the maximum bit error rate C1i of the digital television signal under the signal strength scale Li when pairing image mosaic do not occur;
Determine i the error rate C2i of the digital television signal under the signal strength scale Li when a small amount of mosaic appears in pairing image;
Determine that i the digital television signal under the signal strength scale Li a large amount of mosaics or image occur at pairing image and become minimum bit-error rate C3i can not show the time;
I=1 wherein, 2 ..., n; C1i, C2i and C3i draw data according to designer's test when product design, be designed in the product again.
The value of n is 5 in the preferred embodiment of the present invention.
The error rate of determining different images quality under the unlike signal intensity can obtain by test in product development process, by testing the error rate C1i that determines the digital television signal maximum when pairing image mosaic do not occur under five signal strength scales, i.e. C11, C12, C13, C14, C15; By testing the error rate C2i that determines the digital television signal maximum when a small amount of mosaic appears in pairing image under five signal strength scales, i.e. C21, C22, C23, C24, C25; At pairing image the error rate C3i that a large amount of mosaics or image become minimum can not show the time, i.e. C31, C32, C33, C34, C35 appear by testing the digital television signal determined under five signal strength scales.The error rate of different display quality correspondences is as shown in table 1 under the unlike signal intensity.
The error rate of different display quality correspondences under the table 1 unlike signal intensity
In step (S3), according to the strength grade L and the quality index C of digital television signal, provide a comprehensive quality grade Q, further comprise:
Digital television signal intensity is the value of Li and error rate Ca when satisfying Ca 〉=C3i, and image serious mosaic occurs even can not show, this moment, digital television signal comprehensive quality grade Q was 0;
Digital television signal intensity is the value of Li and error rate Ca when satisfying C2i＜Ca＜C3i, and more mosaic appears in image, and this moment, digital television signal comprehensive quality grade Q was Q1;
Digital television signal intensity is that the value of Li and error rate Ca satisfies C1i＜Ca≤C2i and i＞1 o'clock, and a spot of mosaic appears in image, but because the intensity of signal greater than L1, signal strength signal intensity is stronger, this moment, digital television signal comprehensive quality grade Q was Q2;
Digital television signal intensity is the value of Li and error rate Ca when satisfying C1i＜Ca≤C2i and i=1, and a spot of mosaic appears in image, and signal strength signal intensity is L1, signal strength signal intensity a little less than, this moment, digital television signal comprehensive quality grade Q was Q1;
Digital television signal intensity is the value of Li and error rate Ca when satisfying Ca≤C1i, and clear picture, the quality of signal synthesis quality mainly contain the strong and weak decision of signal strength signal intensity, and this moment, digital television signal comprehensive quality grade Q was Qi;
I=1 in each step, 2 ..., n.
The value of n is 5 in the preferred embodiment of the present invention.
Signal synthesis credit rating and signal strength signal intensity and signal quality relation are as shown in table 2.
Table 2 signal synthesis credit rating and signal strength signal intensity and signal quality relation
As seen from the above, in the preferred embodiment of digital television signal indicating means of the present invention, the signal synthesis credit rating is to be benchmark with the signal strength signal intensity, the binding signal quality index, draw signal synthesis credit rating Qi, when the error rate is very low, in fact the signal synthesis credit rating can be thought is exactly signal strength scale, and descend when signal quality, when the error rate increased, the influence to image effect reduced the signal synthesis credit rating according to current demand signal strength grade and the error rate, and no matter how strong signal is, when picture quality seriously descends, serious mosaic appears even can not show the time, the signal synthesis credit rating is 0.
The indicating mode of signal synthesis credit rating Qi as shown in Figure 3 and Figure 4, signal indication when Fig. 3 shows the signal synthesis credit rating and is Q5, when signal synthesis intensity is Qi, show Qi and Qi signal bar before, when the integrated signal quality is 0 or during no signal, signal is indicated as shown in Figure 4, and all signal bars do not show.Domestic consumer is by the signal bar, the quality of the current digital television signal of interpretation easily, and it is conflicting or occur indicating the situation that makes unprofessional user fail to understand with two signals with actual conditions the signal indication can not occur.
Digital Television of the present invention is to adopt the Digital Television of above-mentioned signal indicating means.
In conjunction with the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (6)
1. a digital television signal indicating means is characterized in that, may further comprise the steps:
(S1) obtain the strength grade L of digital television signal;
(S2) obtain the quality index C of digital television signal;
(S3), provide a comprehensive quality grade Q according to the strength grade L and the quality index C of digital television signal;
(S4) the comprehensive quality grade Q of the described digital television signal of demonstration.
2. digital television signal indicating means according to claim 1 is characterized in that, also is included in described step (S1) and before digital television signal is divided into the step of n grade by intensity, and n is the natural number more than or equal to 3.
3. digital television signal indicating means according to claim 2 is characterized in that, the quality index C described in the described step (S2) is the error rate of digital television signal.
4. digital television signal indicating means according to claim 3 is characterized in that, also comprises the steps:
Determine i the maximum bit error rate Cli of the digital television signal under the signal strength scale Li when pairing image mosaic do not occur;
Determine i the error rate C2i of the digital television signal under the signal strength scale Li when a small amount of mosaic appears in pairing image;
Determine that i the digital television signal under the signal strength scale Li a large amount of mosaics or image occur at pairing image and become minimum bit-error rate C3i can not show the time;
In the described step (S3),, provide a comprehensive quality grade Q, further comprise according to the strength grade L and the quality index C of digital television signal:
Digital television signal intensity is the value of Li and error rate Ca when satisfying Ca 〉=C3i, and digital television signal comprehensive quality grade Q is 0;
Digital television signal intensity is the value of Li and error rate Ca when satisfying C2i＜Ca＜C3i, and digital television signal comprehensive quality grade Q is Q1;
Digital television signal intensity is that the value of Li and error rate Ca satisfies Cli＜Ca≤C2i and i＞1 o'clock, and digital television signal comprehensive quality grade Q is Q2;
Digital television signal intensity is the value of Li and error rate Ca when satisfying Cli＜Ca≤C2i and i=1, and digital television signal comprehensive quality grade Q is Q1;
Digital television signal intensity is the value of Li and error rate Ca when satisfying Ca≤Cli, and digital television signal comprehensive quality grade Q is Qi;
I=1 in each step, 2 ..., n.
5. digital television signal indicating means according to claim 4 is characterized in that, the value of described n is 5.
6. Digital Television that adopts each described digital television signal indicating means of claim 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810217858A CN101742165B (en) | 2008-11-25 | 2008-11-25 | Method for indicating digital television signal and digital television using same |
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| CN200810217858A CN101742165B (en) | 2008-11-25 | 2008-11-25 | Method for indicating digital television signal and digital television using same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102883210A (en) * | 2012-09-28 | 2013-01-16 | 深圳市九洲电器有限公司 | Obtaining method of digital television progress bar and set top box |
| CN109144826A (en) * | 2018-08-21 | 2019-01-04 | 北京小米移动软件有限公司 | WIFI signal indicating means, device, electronic equipment and storage medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1874431A (en) * | 2005-06-01 | 2006-12-06 | 东杰电气(上海)有限公司 | TV set capable of displaying intensity of TV signal |
| CN1328906C (en) * | 2005-06-09 | 2007-07-25 | 海信集团有限公司 | Intelligent identification method of TV signal intensity |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102883210A (en) * | 2012-09-28 | 2013-01-16 | 深圳市九洲电器有限公司 | Obtaining method of digital television progress bar and set top box |
| CN102883210B (en) * | 2012-09-28 | 2015-05-06 | 深圳市九洲电器有限公司 | Obtaining method of digital television progress bar and set top box |
| CN109144826A (en) * | 2018-08-21 | 2019-01-04 | 北京小米移动软件有限公司 | WIFI signal indicating means, device, electronic equipment and storage medium |
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| CN101742165B (en) | 2012-09-12 |
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