CN101098427A - Dynamic frequency selecting method and apparatus for television channel - Google Patents
Dynamic frequency selecting method and apparatus for television channel Download PDFInfo
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- CN101098427A CN101098427A CNA2006100361823A CN200610036182A CN101098427A CN 101098427 A CN101098427 A CN 101098427A CN A2006100361823 A CNA2006100361823 A CN A2006100361823A CN 200610036182 A CN200610036182 A CN 200610036182A CN 101098427 A CN101098427 A CN 101098427A
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- frequency
- television channel
- receive frequency
- signal strength
- strength values
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Abstract
The invention discloses a dynamic frequency selecting method of television program, comprising that first detecting if user switches new program, when user switches new program, picking the receiving frequency relative to the new program, to be calculated to send a relative value to a tuning device, then detecting the signal size of the new program received at the receiving frequency, to obtain a first signal strength, according to a default value, increasing the receiving frequency, and detecting the signal size of received new program, to obtain a second signal strength, according to a default value, reducing the receiving frequency, and detecting the signal size of received new program to obtain a third signal strength, comparing the first, second and third signal strengths, to obtain a result, via which to decide the right receiving frequency of the new program, to be stored in a memory device, as the receiving frequency in new switch.
Description
Technical field
The invention relates to a kind of system of selection of frequency of television channel, and particularly receive the signal magnitude of television channel, be used as the frequency selecting method of dynamic television channel relevant for a kind of foundation.
Background technology
In the epoch of information explosion now, TV has become one of household electrical appliances indispensable in each family.And from TV programme acquired information, also be the very important approach of modern.
Fig. 1 is a kind of block schematic diagram of frequency selective network of known television channel.Please refer to Fig. 1, the user can utilize the panel (not illustrating) on a remote controller or the television set, selects the channel that will watch.Tuner 101 then can be delivered to processing unit 103 with the selected channel information of user.After processing unit 103 detects the channel that the user imports, can be from the corresponding receive frequency of internal memory 105 acquisitions, so that the TV function receives the program channel that the user will watch according to this receive frequency.
Yet the influence along with various kinds factor in the environment may cause the drift of receive frequency.Therefore, perhaps the receive frequency that processing unit 103 takes out from internal memory 105 is not optimal frequency.And in known, because the frequency of stored each channel is all pre-set and can't arbitrarily change in internal memory 105.Therefore, when the user switches to new channel, also can't come receiving channels information sometimes, so that have influence on the quality of rating according to optimal receive frequency.
Summary of the invention
Therefore, purpose of the present invention is exactly in frequency selective network that a kind of dynamic television channel is provided and method, can dynamically adjust the center receive frequency of television channel, and makes television set can not cause rating bad because of the channel drift.
The invention provides a kind of frequency selecting method of dynamic television channel, it has comprised whether first detecting user switches to new television channel.When the user switches to new television channel, then capture the pairing receive frequency of new television channel, after computing, value corresponding delivered to the harmony device.Detect the signal magnitude that receives new television channel at this receive frequency then, and obtain one first signal strength values.Increase this receive frequency according to a default value, and detecting receives the signal magnitude of new television channel, and obtain a secondary signal intensity level.Downgrade this receive frequency according to a default value, and detecting receives the signal magnitude of new television channel, and obtain one the 3rd signal strength values.At this moment, relatively first signal strength values, secondary signal intensity level and the 3rd signal strength values and obtain a comparative result determine the receive frequency size that new television channel is the suitableeest according to this comparative result again.And this suitableeest receive frequency value is stored in the storage device, with the receive frequency of the initial correspondence when switching to this channel next time.
In an embodiment of the present invention, the step of receive frequency is adjusted in above-mentioned acquisition, comprised in internal memory the pairing receive frequency of the new television channel of acquisition, receive frequency is added default value and obtained one first and adjust frequency, and receive frequency deducted default value and obtained one second and adjust frequency.Wherein, above-mentioned secondary signal intensity level is to adjust frequency with first to deliver to the signal magnitude of the received new television channel of harmony device after computing, and is one the 3rd signal strength values with second signal magnitude of delivering to the received new television channel of harmony device after computing of adjusting frequency.
In addition, the step of the receive frequency size that the new television channel of above-mentioned decision is the suitableeest comprises when secondary signal intensity level during greater than the 3rd signal strength values and first signal strength values, then selects first to adjust frequency and be used as the receive frequency of new television channel.Relatively, when the 3rd signal strength values during, then select second to adjust frequency and be used as the receive frequency of new television channel greater than the secondary signal intensity level and first signal strength values.And if first signal strength values is then kept the receive frequency of original new television channel during greater than secondary signal intensity level and the 3rd signal strength values.
From another viewpoint, the invention provides a kind of frequency selection device of television channel, it has comprised tuner, storage device and processing unit.Wherein, processing unit is to be used for the television channel imported by remote controller or button according to a user, and chooses a corresponding receive frequency from storage device, delivers to the harmony device after computing.In addition, the present invention has also comprised computing module, detecting module and comparison module.Wherein, computing module can receive an above-mentioned receive frequency and a default value, and produces at least one adjusting frequency.Detecting module then can be detected respectively in the size of receive frequency with the signal of the received television channel of adjusting frequency.And comparison module is to couple detecting module, in the size of the signal of the received television channel of receive frequency, and in the size of the signal of the received television channel of adjusting frequency, and obtains a comparative result with relatively.After comparison module obtains this comparative result, it can be delivered to processing unit, obtaining the suitableeest receive frequency of television channel, and it is stored in the storage device.
Under preferable situation, computing module comprises adder and subtracter.Wherein, adder is to be used for receive frequency added default value and produce one first adjusting frequency, and subtracter then is to be used for receive frequency deducted default value and produce one second adjusting frequency.And above-mentioned detecting module sees through processing unit and detects respectively at receive frequency, first from the harmony device and adjust frequency and second size of signal of received television channel of adjusting frequency, and obtains corresponding first signal strength values, secondary signal intensity level and the 3rd signal strength values.
In addition, comparison module has comprised first comparing unit and second comparing unit.Wherein, first comparing unit can be selected the greater output in the two of first signal strength values and secondary signal intensity level, second comparing unit then be used for selecting the output of first comparing unit and the 3rd signal strength values in the two the greater deliver to processing unit, with the suitableeest receive frequency of detecting television channel.
Because the present invention can compare the receive frequency of the television channel that the user switches, and according in the first adjustment receive frequency and the second adjustment receive frequency that default value produced, the signal that what person receives required television channel is the strongest, and the frequency of selecting to receive the signal of the strongest television channel is best frequency.Therefore, the present invention more can not be subjected to the drift of the center receive frequency of television channel, and has influence on the quality of rating.
Description of drawings
Fig. 1 is a kind of calcspar of frequency selective network of known television channel.
Fig. 2 is the principle schematic according to the frequency selecting method of a kind of dynamic television channel of a preferred embodiment of the present invention.
Fig. 3 is the calcspar according to the frequency selection device of a kind of television channel of a preferred embodiment of the present invention.
Fig. 4 is the inside structure calcspar according to a kind of computing module of a preferred embodiment of the present invention.
Fig. 5 is the inside structure calcspar according to a kind of comparison module of a preferred embodiment of the present invention.
Fig. 6 is the flow chart of steps according to the frequency selecting method of a kind of dynamic television channel of a preferred embodiment of the present invention.
Fig. 7 is a kind of flow chart of steps that obtains the suitableeest receive frequency of television channel according to a preferred embodiment of the present invention.
Embodiment
Fig. 2 is the principle schematic according to the frequency selecting method of a kind of dynamic television channel of a preferred embodiment of the present invention.Please refer to Fig. 2, assumed curve 21 is the signal strength signal intensity (E) of certain television channel curve charts to frequency (f).When the user switched to the television channel of Fig. 2 representative, the default receive frequency value of this television channel was f1.Yet in some cases, receive frequency can produce the phenomenon of drift.That is to say, be not the strongest at the intensity E1 of the signal of the received television channel of default receive frequency f1.
And in order to make the user that preferable rating quality can be arranged, so the present invention can add and deduct a default value Δ f with default receive frequency when the user switches to new television channel, and obtain adjusting receive frequency f2 and f3 respectively.The present invention can judge at receive frequency f1 then, and in the intensity of the signal magnitude of adjusting the received television channel of receive frequency f2 and f3, and selects to receive the frequency of the signal of the strongest television channel, is used as the receive frequency of television channel.
Though in Fig. 2, the present invention only with default value Δ f of receive frequency f1 plus-minus obtaining adjusting receive frequency f2 and f3, yet just be used for clearly demonstrating the present invention.In a further embodiment, the practician can select the frequency number that will compare voluntarily, for example with receive frequency f1 plus-minus secondary default value Δ f, and obtains more comparative sample, and this can not have influence on the present invention.
Fig. 3 is the calcspar according to the frequency selection device of a kind of television channel of a preferred embodiment of the present invention, can be useful in simulated television or Digital Television.Please refer to Fig. 3, tuner 301 can take out the specific TV channel signal and send processing unit 303 back to according to processing unit 303 instructions, and processing unit 303 has then coupled storage device 305 and computing module 307.In addition, after 311 of comparison modules can compare the output of detecting module 309, output result relatively was to processing unit 303 again.
When user's switching TV channel, processing unit 303 can capture the relevant pairing receive frequency of this television channel from storage device 305, and this receive frequency is delivered to computing module 307.
Fig. 4 is the inside structure calcspar according to a kind of computing module of a preferred embodiment of the present invention.Please merge with reference to Fig. 3 and Fig. 4, in the present embodiment, computing module 307 has comprised adder 401 and subtracter 403.When processing unit 303 was delivered to computing module 307 with receive frequency f1, adder 401 can add a default value Δ f with receive frequency f1 and produce adjustment receive frequency f2.In addition, 403 of subtracters can deduct default value Δ f with receive frequency f1 and produce adjustment receive frequency f3.And computing module 307 can be sent receive frequency f1, adjustment receive frequency f2 and f3 back to processing unit 303.
When processing unit 303 receives the output of computing module 307, can deliver to the harmony device after the computing respectively, and see through detecting module 309 detectings at receive frequency f1, adjust signal strength values E1, E2 and the E3 of the received television channel of receive frequency f2 and f3, and deliver to comparison module 311.
Fig. 5 is the inside structure calcspar according to a kind of comparison module of a preferred embodiment of the present invention.Please merge with reference to Fig. 4 and Fig. 5, when detecting module 309 is delivered to comparison module 311 with signal strength values E1, E2 and E3, comparing unit 501 in the comparison module 311 can first comparison signal intensity level E1 and the two size of E2, and exports the greater to comparing unit 503.Similarly, comparing unit 503 can be compared the output of comparing unit 501 with signal strength values E3, and the greater feedback is delivered to processing unit 303.And processing unit 303 will switch to the suitableeest receive frequency of television channel and select frequency f 1, f2 or f3 to be used as the user according to the output of comparison module 311, and it is stored in the storage device 305.
In preferred embodiment, storage device 305 can be flash memory or the electronics programmble read only memory PROM (EEPROM) etc. of can erasing.In addition, above-mentioned computing module 307, survey module 309 and comparison module 311 can utilize the mode of software or a piece of wood serving as a brake to halt a carriage body to realize.
With above-mentioned do one arrangement, the invention provides a kind of frequency selecting method of dynamic television channel, as shown in Figure 6.Please refer to Fig. 6, when the present invention as described in the step S601, detect the user when switching to new television channel, can carry out step S603, capture the pairing receive frequency f1 of new television channel exactly.And this receive frequency f1 can be the frequency values that sets storage before.
Then, meeting of the present invention is as described in the step S605, and detecting is in the size of the signal of the received new television channel of receive frequency f1, and picked up signal intensity level E1.In addition, the present invention also can obtain one according to a default value and adjust receive frequency f2 as described in the step S607, and detecting is in the size of the signal of adjusting the received new television channel of receive frequency f2, and picked up signal intensity level E2.
In the present embodiment, the present invention can add receive frequency f1 default value and obtain adjusting receive frequency f2.In addition, in the embodiment that other is selected, the present invention can also be as described in the step S609, f1 deducts default value with receive frequency, and obtain adjusting receive frequency f3, and detect size at the signal of adjusting the received new television channel of receive frequency f3, and picked up signal intensity level E3.The present invention just can be as described in the step S611 then, and basis signal intensity level E1, E2 and E3 obtain the suitableeest receive frequency fc of new television channel.
Fig. 7 is a kind of flow chart of steps that obtains the suitableeest receive frequency of television channel according to a preferred embodiment of the present invention.Please refer to Fig. 7, after the present invention obtains signal strength values E1, E2 and E3 as described in Figure 6, at first can judge that whether signal strength values E2 is greater than E1 as described in the step S701.When signal strength values E1 during (just step S701 indicated "No") greater than E2, then carry out step S703, judge that whether signal strength values E3 is greater than E1.And if signal strength values E3 during greater than E1 (just step S703 indicated "Yes") then as described in the step S705, is used as adjust receive frequency f3 as the suitableeest receive frequency fc of new television channel.Anti-(just step S703 indicated "No") then as described in the step S707, kept original receive frequency f1 and is used as the suitableeest receive frequency fc of new television channel.
If in step S701, signal strength values E2 is during greater than E1 (just step S701 indicated "Yes"), then carries out step S709, judges that whether signal strength values E3 is greater than E2.When signal strength values E3 during (just step S709 indicated "Yes"), then, be used as adjust receive frequency f3 as the suitableeest receive frequency fc of new television channel equally as described in the step S705 greater than E2.Anti-(just step S709 indicated "No") then as described in the step S711, is used as adjust receive frequency f2 as the suitableeest receive frequency fc of new television channel.After finding out the suitableeest receive frequency fc of new television channel, can also be as described in the step S713, the receive frequency fc value that new television channel is the suitableeest stores, the receive frequency f1 of the correspondence of taking out when switching television channel so far next time.
In sum, because the present invention can find out signal strength signal intensity E1, E2 and E3 at frequency f 1, f2 and the received television channel of f3, and select the strongest pairing frequency of signal strength signal intensity to be used as the suitableeest receive frequency of television channel.Therefore, the present invention more can be because of the drift that is subjected to frequency, and has influence on the quality of rating.
Claims (17)
1. the frequency selecting method of a dynamic television channel is characterized in that: comprise the following steps
Whether detecting switches to new television channel;
When switching to a new television channel, the pairing receive frequency of this new television channel of acquisition then;
Detecting receives the signal magnitude of this new television channel at this receive frequency, and obtains one first signal strength values;
Adjust this receive frequency according to a default value, adjust receive frequency and obtain one;
Detecting receives the signal magnitude of this new television channel at this adjustment receive frequency, and obtains a secondary signal intensity level;
Relatively this first signal strength values obtains a comparative result with this secondary signal intensity level;
Determine the receive frequency size that this new television channel is the suitableeest according to this comparative result.
2. the frequency selecting method of dynamic television channel according to claim 1 is characterized in that: obtain the step of this adjustment receive frequency, comprise this receive frequency is added this default value, adjust frequency and obtain one first.
3. the frequency selecting method of dynamic television channel according to claim 2 is characterized in that: obtain the step of this secondary signal intensity level, comprise that detecting is in this first signal magnitude of adjusting frequency received this new television channel.
4. the frequency selecting method of dynamic television channel according to claim 3 is characterized in that: determine the step of the receive frequency size that this new television channel is the suitableeest, comprise the following steps
When the size of this secondary signal intensity level during, then select this first to adjust frequency and be used as the receive frequency of this new television channel greater than this first signal strength values;
When the size of this secondary signal intensity level during, then keep the receive frequency of this new television channel less than this first signal strength values.
5. the frequency selecting method of dynamic television channel according to claim 1 is characterized in that: obtain the step of this adjustment receive frequency, comprise this receive frequency is deducted this default value, adjust frequency and obtain one second.
6. the frequency selecting method of dynamic television channel according to claim 5 is characterized in that: obtain the step of this secondary signal intensity level, comprise that detecting is in this second signal magnitude of adjusting frequency received this new television channel.
7. the frequency selecting method of dynamic television channel according to claim 6 wherein determines to it is characterized in that the step of the receive frequency size that this new television channel is the suitableeest: comprise the following steps
When the size of this secondary signal intensity level during, then select this first to adjust frequency and be used as the receive frequency of this new television channel greater than this first signal strength values;
When the size of this secondary signal intensity level during, then keep the receive frequency of this new television channel less than this first signal strength values.
8. the frequency selecting method of dynamic television channel according to claim 1 wherein obtains the step of this adjustment receive frequency, it is characterized in that: comprise the following steps
This receive frequency added this default value and obtain one first adjust frequency;
This receive frequency deducted this default value and obtain one second adjust frequency.
9. the frequency selecting method of dynamic television channel according to claim 8, it is characterized in that: this secondary signal intensity level is first to adjust frequency and this second signal magnitude of adjusting frequency the two one of them received this new television channel at this, and first adjusts frequency and this second signal magnitude of adjusting frequency the two another received this new television channel is one the 3rd signal strength values at this.
10. the frequency selecting method of dynamic television channel according to claim 9 wherein determines to it is characterized in that the step of the receive frequency size that this new television channel is the suitableeest: comprise the following steps
When this secondary signal intensity level during, then select this first to adjust frequency and be used as the receive frequency of this new television channel greater than the 3rd signal strength values and this first signal strength values;
When the 3rd signal strength values during, then select this second to adjust frequency and be used as the receive frequency of this new television channel greater than this secondary signal intensity level and this first signal strength values;
When this first signal strength values during, then keep the receive frequency of this new television channel greater than this secondary signal intensity level and the 3rd signal strength values.
11. the frequency selecting method of dynamic television channel according to claim 1 is characterized in that: it more comprises the suitableeest receive frequency of this new television channel of storage.
12. the frequency selection device of a television channel is characterized in that: comprise
One tuner;
One storage device;
One processing unit, in order to according to a user by a remote controller and the two one of them television channel of being imported of a button, and choose a corresponding receive frequency from this storage device;
One computing module receives this receive frequency and a default value, and produces at least one adjusting frequency;
One detecting module is in order to detect the size at the signal of this receive frequency and this received this television channel of adjusting frequency respectively;
One comparison module, couple this detecting module, in order to compare size at the signal of received this television channel of this receive frequency, and in the size of the signal of this received this television channel of adjusting frequency, and obtain a comparative result, and this comparative result delivered to this processing unit, obtaining the suitableeest receive frequency of this television channel, and it is stored in this storage device.
13. the frequency selection device of television channel according to claim 12 is characterized in that: this computing module comprises
One adder produces one first in order to this receive frequency is added this default value and adjusts frequency;
One subtracter produces one second in order to this receive frequency is deducted this default value and adjusts frequency.
14. the frequency selection device of television channel according to claim 13, it is characterized in that: this detecting module in order to detect at this receive frequency respectively, this first adjusts frequency and this second size of signal of received this television channel of adjusting frequency, and obtains corresponding one first signal strength values, a secondary signal intensity level and one the 3rd signal strength values.
15. the frequency selection device of television channel according to claim 14 is characterized in that: this comparison module comprises
One first comparing unit is in order to select the greater output in the two of this first signal strength values and this secondary signal intensity level;
One second comparing unit, in order to the output of selecting this first comparing unit and the 3rd signal strength values in the two the greater deliver to this processing unit, to detect the suitableeest receive frequency of this television channel.
16. the frequency selection device of television channel according to claim 12 is characterized in that: this storage device is a flash memory.
17. the frequency selection device of television channel according to claim 12 is characterized in that: this storage device is the electronics programmble read only memory PROM of can erasing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100361823A CN100508571C (en) | 2006-06-30 | 2006-06-30 | Dynamic frequency selecting method and apparatus for television channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100361823A CN100508571C (en) | 2006-06-30 | 2006-06-30 | Dynamic frequency selecting method and apparatus for television channel |
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| Publication Number | Publication Date |
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| CN101098427A true CN101098427A (en) | 2008-01-02 |
| CN100508571C CN100508571C (en) | 2009-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100361823A Expired - Fee Related CN100508571C (en) | 2006-06-30 | 2006-06-30 | Dynamic frequency selecting method and apparatus for television channel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104093068A (en) * | 2014-07-15 | 2014-10-08 | 深圳市同洲电子股份有限公司 | Method and device for filtering non-signaled television programs |
| CN108289242A (en) * | 2018-01-17 | 2018-07-17 | 青岛海信电器股份有限公司 | The method of adjustment and device of television channel receives frequency |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI511563B (en) * | 2011-09-01 | 2015-12-01 | Top Victory Invest Ltd | TV changer control method and TV host |
-
2006
- 2006-06-30 CN CNB2006100361823A patent/CN100508571C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104093068A (en) * | 2014-07-15 | 2014-10-08 | 深圳市同洲电子股份有限公司 | Method and device for filtering non-signaled television programs |
| CN108289242A (en) * | 2018-01-17 | 2018-07-17 | 青岛海信电器股份有限公司 | The method of adjustment and device of television channel receives frequency |
| CN108289242B (en) * | 2018-01-17 | 2021-07-23 | 海信视像科技股份有限公司 | Method and device for adjusting receiving frequency of television channel |
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| Publication number | Publication date |
|---|---|
| CN100508571C (en) | 2009-07-01 |
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Granted publication date: 20090701 Termination date: 20190630 |