CN1328906C - Intelligent identification method of TV signal intensity - Google Patents
Intelligent identification method of TV signal intensity Download PDFInfo
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- CN1328906C CN1328906C CNB2005100437705A CN200510043770A CN1328906C CN 1328906 C CN1328906 C CN 1328906C CN B2005100437705 A CNB2005100437705 A CN B2005100437705A CN 200510043770 A CN200510043770 A CN 200510043770A CN 1328906 C CN1328906 C CN 1328906C
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Abstract
本发明公开了一种电视机中的信号强度智能识别方法，利用电视机内部芯片检测解调后的电视信号的信噪比，将检测到的信噪比按照从低到高的顺序分为八个等级，每个等级在屏显OSD中对应不同等级的天线强度图标，类似于我们在手机中看到的天线强度图标。用户在收看电视节目的时候，可以随时随地的准确看到电视广播信号的强弱。当信号强度在变化时，信号强弱的指示也会显示并改变，说明此时信号不稳定，提醒用户注意。本发明的信号强度智能识别方法给用户提供了一种可以方便直观的识别信号强弱的工具。在不增加成本的情况下，增加了电视机的附加功能，给消费者带来了更大的附加值。
The invention discloses a method for intelligent identification of signal strength in a TV, which utilizes an internal chip of the TV to detect the signal-to-noise ratio of the demodulated TV signal, and divides the detected signal-to-noise ratio into eight according to the sequence from low to high. Each level corresponds to a different level of antenna strength icons in the OSD, similar to the antenna strength icons we see in mobile phones. When users watch TV programs, they can accurately see the strength of TV broadcast signals anytime and anywhere. When the signal strength is changing, the indication of the signal strength will also be displayed and changed, indicating that the signal is unstable at this time and reminding the user to pay attention. The signal strength intelligent identification method of the present invention provides a tool for users to identify signal strength conveniently and intuitively. In the case of not increasing the cost, the additional functions of the TV are increased, which brings greater added value to consumers.
Description
Technical field
The invention belongs to television set and make the field, relate to the realization technology of TV additional function, specifically, relate to a kind of signal strength signal intensity indication that on television set, increases, make things convenient for the user to get information about the method for television broadcasting signal bull bear position.
Background technology
TV tech is through years of development, become a kind of very ripe product to present stage, the competition in market is also more and more cruel, obtains consumer's extensive approval for making product in the numerous competitor in market, must segment market, realize the differential competition of product.The differentiation of special function, requiring increases the additional function of TV with lower cost, satisfies the growing multiple demand of consumer, promotes the competitiveness of product in market.As everyone knows, the indication of signal strength signal intensity has become one of show label indispensable in the mobile phone in the mobile phone, and along with TV development with rapid changepl. never-ending changes and improvements, the consumer also not only is confined to watching of TV programme to the demand of television set, requires also more and more to shielding the variation attractive in appearance, function that shows OSD.If can make existing television set increase the deixis of signal power under the prerequisite that does not increase cost, this can attract the consumer to pay close attention to undoubtedly, brings bigger surcharge to the consumer, and then promotes the competitiveness of tv product.
Summary of the invention
The present invention can not the strong and weak degree of shows signal in order to solve in the prior art television set, thereby make the user can't intuitively see the good and bad of signal, the problem that makes accurate judgment, a kind of intelligent identification Method of signal strength signal intensity is provided, provide a quantitative criteria of signal power, increased the additional function of TV.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
Signal strength signal intensity intelligent identification Method in a kind of television set comprises following step:
Step 2, the TV signal after the demodulation is obtained the value of signal to noise ratio after the television set internal circuit is handled, deposit register in; The value of reading this register is divided into eight grades of 0-7 altogether, Dui Ying snr value is respectively: signal to noise ratio≤18dB, 18dB＜signal to noise ratio≤25dB, 25dB＜signal to noise ratio≤28dB, 28dB＜signal to noise ratio≤31dB, 31dB＜signal to noise ratio≤37dB, 37dB＜signal to noise ratio≤40dB, 40dB＜signal to noise ratio≤43dB, signal to noise ratio＞43dB;
As further qualification to technique scheme, in the TV signal after described demodulation, luminance signal enters the clamped processing of circuit of direct current after an electric capacity elimination DC component, its output links to each other with wherein one road gating end of a system selector switch, another road gating end of described system selector switch connects vision signal, its output connects sync separator and noise circuit for detecting respectively, and described noise circuit for detecting is input to the signal to noise ratio that detects in the register.
As the further qualification again to technique scheme, described antenna intensity map target display packing may further comprise the steps:
The value of signal to noise ratio in step 1, the readout register;
Step 2, select the corresponding characters combination according to the grade of signal to noise ratio; Wherein, the corresponding a kind of icon state of each character, the expression current signal intensity combines;
As further qualification again to technique scheme, adopt 9 kinds of icon state of 9 character representations, the antenna intensity icon of grade all adopts 3 character combinations to represent arbitrarily.
Compared with prior art, advantage of the present invention and good effect are: the present invention utilizes the signal to noise ratio of the TV signal after the television set inside chip detection demodulation, detected signal to noise ratio is divided into eight grades according to from low to high order, the antenna intensity icon of each grade corresponding different brackets in the apparent OSD of screen is similar to the antenna intensity icon that we see in mobile phone.The user can accurately see the power of television broadcasting signal anywhere or anytime in TV reception.When signal strength signal intensity was changing, the indication of signal power also can show and change, jitter at this moment was described, call user's attention.Signal strength signal intensity intelligent identification Method of the present invention provides a kind of to the user can make things convenient for the instrument of identification signal power intuitively.Do not increasing under the condition of cost, increasing the additional function of television set, bringing bigger added value to the consumer.
Description of drawings
Fig. 1 is a shown antenna intensity icon on the television screen among the present invention;
Fig. 2 is the idiographic flow block diagram of signal strength signal intensity intelligent identification Method of the present invention;
Fig. 3 is the noise detecting circuit figure among the present invention;
Fig. 4 is the corresponding relation figure of character and icon among the present invention;
Fig. 5 is the idiographic flow block diagram of antenna intensity icon display method among the present invention.
Embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The present invention indicates the power of current television broadcasting signal by show as shown in Figure 1 icon on television screen, and the recognition methods of its signal strength signal intensity comprises following 4 steps referring to FB(flow block) shown in Figure 2:
2-1, input signal is carried out demodulation, obtain the TV signal after the demodulation.
2-2, the TV signal after the demodulation is obtained the value of signal to noise ratio after the television set internal circuit is handled, deposit register in, this process realizes that by television set internal hardware circuit physical circuit is referring to shown in Figure 3.Luminance signal in the TV signal enters the clamped circuit N1 of direct current and handles through capacitor C 1 elimination flip-flop, obtains effective luminance signal.The luminance signal here refers to the luminance signal after the radio frequency processing, need not to handle and can directly obtain for vision signal.The output of the clamped circuit N1 of described direct current links to each other with the road gating end of system selector switch N2, another road gating end connects the input of vision signal, and system program can select different luminance signals to send into follow-up sync separator N3 and noise circuit for detecting N4 processing respectively according to current state control system selector switch N2.Described noise circuit for detecting adopts TDA120
*The acoustic processing chip of series realizes having the TV signal of demodulation is carried out the hardware that signal to noise ratio detects in described chip, it obtains by certain algorithm according to the proportionate relationship of noise and signal, finally feeds back to three bit register SN2..0 of chip.
The signal to noise ratio that obtains thus provides with the form of read-only register, the value of reading this register SN2..0 is divided into eight grades of 0-7 altogether, Dui Ying snr value is respectively: signal to noise ratio≤18dB, 18dB＜signal to noise ratio≤25dB, 25dB＜signal to noise ratio≤28dB, 28dB＜signal to noise ratio≤31dB, 31dB＜signal to noise ratio≤37dB, 37dB＜signal to noise ratio≤40dB, 40dB＜signal to noise ratio≤43dB, signal to noise ratio＞43Db.When signal to noise ratio during less than 18dB, almost can not find synchronously, therefore orientate this kind state as no signal; When signal to noise ratio can well be watched TV programme during greater than 37dB, therefore with the strong signal of orientating as more than this kind state; Signal between this two states, though we can watch TV programme, effect is poor, therefore orientates the weak signal state as.
2-3, judge whether to receive that change has taken place for user's request display command or detected signal to noise ratio grade, if when having request display command or signal to noise ratio grade to change, enter the DP display processor of 2-4, otherwise just continue to read register, wait for next display command.
2-4, show corresponding antenna intensity icon according to the signal to noise ratio grade.
Signal strength signal intensity of the present invention shows and television channel number occurs simultaneously, and is presented at the below of channel, and this requires and channel is made unified style.Usually, the channel of TV all is three bit digital, and signal strength signal intensity demonstration also is made up of three characters still, has so also avoided single character to show and has caused the not attractive in appearance of demonstration.If according to usual way, eight kinds of states, every kind of state is made up of three characters, needs 24 characters so altogether, and this is undoubtedly a kind of waste for character repertoire.Therefore, processing method of the present invention is reduced to 9 characters of accompanying drawing 4, and uses the dynamic character combination, shows the space that only need take three characters like this, has effectively saved resource.Here relate to the algorithm that character is taken, can clearly be seen that from accompanying drawing 5, its specific implementation method is:
The value of signal to noise ratio in 5-1, the readout register;
5-2, select the corresponding characters combination according to the grade of signal to noise ratio.Wherein, the corresponding a kind of icon state of each character, the expression current signal intensity that combines, as
When the grade of signal to noise ratio is 0, corresponding character 088;
When the grade of signal to noise ratio is 1, corresponding character 188;
When the grade of signal to noise ratio is 2, corresponding character 128;
When the grade of signal to noise ratio is 3, corresponding character 138;
When the grade of signal to noise ratio is 4, corresponding character 148;
When the grade of signal to noise ratio is 5, corresponding character 145;
When the grade of signal to noise ratio is 6, corresponding character 146;
When the grade of signal to noise ratio is 7, corresponding character 147.
5-3, character download also show corresponding antenna intensity icon.
After we obtain the state value of signal power, corresponding corresponding state is got corresponding character combination, what it should be noted that here that we use is the dynamic character combination, can not be repeated download so must guarantee these three character addresses of using, otherwise will cause the confusion of character.
In sum, the signal strength signal intensity intelligent identification technology mainly is to be converted into the display icon that the user is familiar with cleverly by the detection to signal to noise ratio, reach the purpose of indicating TV signal power, tracking television signal stabilization degree, satisfy the television-viewing requirement that the user improves day by day, on the basis that does not increase cost, user's added value is accomplished maximum.Certainly; above-mentioned explanation is not to be limitation of the present invention; the present invention also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (5)
1. the signal strength signal intensity intelligent identification Method in the television set, it is characterized in that: described recognition methods comprises following step:
Step 1, input signal is carried out demodulation, obtain the TV signal after the demodulation;
Step 2, the TV signal after the demodulation is obtained the value of signal to noise ratio after the television set internal circuit is handled, deposit register in; The value of reading this register is divided into 8 grades;
Step 3, judge whether to receive that change has taken place for user's request display command or detected signal to noise ratio grade, if when having request display command or signal to noise ratio grade to change, the demonstration that enters next step is handled, otherwise just continues to read register, waits for next display command;
Step 4, show corresponding antenna intensity icon according to the signal to noise ratio grade;
In the TV signal after described demodulation, luminance signal enters the clamped processing of circuit of direct current after an electric capacity elimination DC component, its output connects sync separator and noise circuit for detecting, and described noise circuit for detecting is input to the signal to noise ratio that detects in the register.
2. the signal strength signal intensity intelligent identification Method in the television set according to claim 1, it is characterized in that: the corresponding respectively snr value of described 8 grades is: signal to noise ratio≤18dB, 18dB＜signal to noise ratio≤25dB, 25dB＜signal to noise ratio≤28dB, 28dB＜signal to noise ratio≤31dB, 31dB＜signal to noise ratio≤37dB, 37dB＜signal to noise ratio≤40dB, 40dB＜signal to noise ratio≤43dB, signal to noise ratio＞43dB.
3. the signal strength signal intensity intelligent identification Method in the television set according to claim 1 and 2, it is characterized in that: the output of the clamped circuit of described direct current links to each other with wherein one road gating end of a system selector switch, another road gating end connects video signal input terminal, and the output of described system selector switch connects described sync separator and noise circuit for detecting respectively.
4. the signal strength signal intensity intelligent identification Method in the television set according to claim 1 and 2 is characterized in that: described antenna intensity map target display packing may further comprise the steps:
The value of signal to noise ratio in step 1, the readout register;
Step 2, select the corresponding characters combination according to the grade of signal to noise ratio; Wherein, the corresponding a kind of icon state of each character, the expression current signal intensity combines;
Step 3, character are downloaded and demonstration respective antenna intensity icon.
5. the signal strength signal intensity intelligent identification Method in the television set according to claim 4 is characterized in that: adopt 9 kinds of icon state of 9 character representations, the antenna intensity icon of grade all adopts 3 character combinations to represent arbitrarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100437705A CN1328906C (en) | 2005-06-09 | 2005-06-09 | Intelligent identification method of TV signal intensity |
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| CNB2005100437705A CN1328906C (en) | 2005-06-09 | 2005-06-09 | Intelligent identification method of TV signal intensity |
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| CN1700749A CN1700749A (en) | 2005-11-23 |
| CN1328906C true CN1328906C (en) | 2007-07-25 |
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| CNB2005100437705A Expired - Lifetime CN1328906C (en) | 2005-06-09 | 2005-06-09 | Intelligent identification method of TV signal intensity |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150805B (en) * | 2007-11-14 | 2010-09-08 | 闻泰集团有限公司 | A method for smoothing PHS mobile phone signals |
| CN101742165B (en) * | 2008-11-25 | 2012-09-12 | 康佳集团股份有限公司 | Method for indicating digital television signal and digital television using same |
| CN103280174B (en) * | 2013-04-28 | 2016-02-10 | 四川长虹电器股份有限公司 | A kind of method eliminating color noise under weak signal of liquid crystal display |
| CN103634662A (en) * | 2013-12-19 | 2014-03-12 | 珠海迈科电子科技有限公司 | Promoting method and system for strength of video signal |
| CN108055093A (en) * | 2017-12-05 | 2018-05-18 | 北京小米移动软件有限公司 | Signal-to-noise ratio display methods and device |
| CN108512616B (en) * | 2018-04-16 | 2021-10-29 | 努比亚技术有限公司 | Signal intensity display method, mobile terminal and computer readable storage medium |
| CN110582028A (en) * | 2018-06-07 | 2019-12-17 | 深圳市晟江科技有限公司 | method, system and terminal for detecting and reminding wireless video signal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2068741U (en) * | 1990-04-19 | 1991-01-02 | 穆小康 | Small screen imaging tv field strength instrument |
| JPH09261721A (en) * | 1996-03-21 | 1997-10-03 | Nippon Telegr & Teleph Corp <Ntt> | Service providing device connection method |
| CN2471036Y (en) * | 2001-04-12 | 2002-01-09 | 北京网之路科技有限公司 | Real-time monitoring apparatus for quality of TV signal |
| CN1355988A (en) * | 1999-06-16 | 2002-06-26 | 汤姆森特许公司 | Real-time signal strength display for terrestrial digital TV signals |
| CN1607838A (en) * | 2003-10-16 | 2005-04-20 | 北京中视联数字系统有限公司 | A method for monitoring digital television signal quality |
-
2005
- 2005-06-09 CN CNB2005100437705A patent/CN1328906C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2068741U (en) * | 1990-04-19 | 1991-01-02 | 穆小康 | Small screen imaging tv field strength instrument |
| JPH09261721A (en) * | 1996-03-21 | 1997-10-03 | Nippon Telegr & Teleph Corp <Ntt> | Service providing device connection method |
| CN1355988A (en) * | 1999-06-16 | 2002-06-26 | 汤姆森特许公司 | Real-time signal strength display for terrestrial digital TV signals |
| CN2471036Y (en) * | 2001-04-12 | 2002-01-09 | 北京网之路科技有限公司 | Real-time monitoring apparatus for quality of TV signal |
| CN1607838A (en) * | 2003-10-16 | 2005-04-20 | 北京中视联数字系统有限公司 | A method for monitoring digital television signal quality |
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| CN1700749A (en) | 2005-11-23 |
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Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: HISENSE Co.,Ltd. Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee before: HISENSE Co.,Ltd. Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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Granted publication date: 20070725 |