CN1968025B - Radio receiving set and method - Google Patents
Radio receiving set and method Download PDFInfo
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- CN1968025B CN1968025B CN2005101015626A CN200510101562A CN1968025B CN 1968025 B CN1968025 B CN 1968025B CN 2005101015626 A CN2005101015626 A CN 2005101015626A CN 200510101562 A CN200510101562 A CN 200510101562A CN 1968025 B CN1968025 B CN 1968025B
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Abstract
The invention relates to a wireless receiver and method. The method comprises the following steps: setting a plurality of favorable channels to be scanned; periodically scanning the favorable channels and obtaining signal strength of each favorable channel and the signal strength difference between the present scanning period and the last scanning period; calculating the evaluation value for each favorable channel according to the signal strength of each channel and the signal strength difference between the present scanning period and the last scanning period; when the evaluation value of the present listening channel is less than a first given value, selecting one candidate channel as a replacing listening channel according to the evaluation value; and receiving the wireless signal of the listening channel. When the received wireless signal weakens, the invention can automatically select the listening channel, and ensure the quality of the received wireless signal.
Description
[technical field]
The present invention relates to a kind of radio system and method, be in particular a kind of radio system and the method that can select channel automatically.
[background technology]
At present, radio system is received by people widely, and people can utilize radio system to answer audio frequency, and this brings leisure for people's life and loosens.Yet because the restriction of radio system self, people can be subjected to certain restriction when answering audio frequency.For example, because in the local time that the vehicle that radio system is housed drives to another from a place, original channel signals of listening to dies down the radio signal deleterious that makes its reception.
In traditional way, need the user in the broadcasting frequency scope, constantly to search obtaining a frequency that is fit to, and this method need carry out frequency adjustment by hand, unusual trouble seems.
[summary of the invention]
In view of this, be necessary to provide a kind of radio system, when the radio signal that is received weakens, can select to listen to channel automatically, guarantee the radio signal quality that is received.
Above-mentioned radio system can guarantee that also the channel of being listened to is user's a favorite channels.
In view of this, also being necessary provides a kind of radio receiving method, when the radio signal that is received weakens, can select to listen to channel automatically, guarantees the radio signal quality that is received.
Described radio system is used for automatically selecting to listen to channel, and it comprises: a channel setting module is used to set the favorite channels of a plurality of required scannings; The one scan unit is used for the described favorite channels of periodic scan, obtains the signal strength signal intensity of each favorite channels and the difference in signal strength during current scan period and the last one scan; One evaluation of estimate computing module is used for the evaluation of estimate of calculating each favorite channels according to the signal strength signal intensity and the difference in signal strength during current scan period and the last one scan of described each favorite channels; One channel selection module, be used for according to the selected favorite channels of described evaluation of estimate as an alternative listen to channel, described channel selection module is in the evaluation of estimate of the current channel of listening to during less than one first particular value, according to the evaluation of estimate size select a favorite channels wherein as an alternative listen to channel; And a radio reception module, be used to receive the described radio signal of listening to channel.
Described radio receiving method is used for automatic selective reception channel, comprises the steps:
(a) favorite channels of a plurality of required scannings of setting; (b) the described a plurality of channels of periodic scan obtain the signal strength signal intensity of each favorite channels and the difference in signal strength during current scan period and the last one scan; (c) evaluation of estimate of calculating each favorite channels according to the signal strength signal intensity and the difference in signal strength during current scan period and the last one scan of this each channel; When (d) the current evaluation of estimate of listening to channel is less than one first particular value, according to the evaluation of estimate size select a favorite channels wherein as an alternative listen to channel; Reach and (e) receive the described radio signal of listening to channel.
By described radio system and method, when the radio signal of its reception weakens, can select to listen to channel automatically, guarantee the radio signal quality that is received.
[description of drawings]
Fig. 1 is the Organization Chart of radio system.
Fig. 2 is the schematic diagram of favorite channels signal strength signal intensity.
Fig. 3 and Fig. 4 are that radio system is monitored the flow chart that the favorite channels situation also selects to be fit to listen to channel automatically.
[embodiment]
Consulting shown in Figure 1ly, is the Organization Chart of radio system.Radio system 1 can receive radio signal in the present embodiment, its demodulation is reduced to audio signal, and plays.
The primary clustering that described radio system 1 is comprised is a CPU 11.The necessary element that this CPU 11 connects all receptions, modulated radio signal and plays corresponding audio frequency.
The radio system 1 of present embodiment includes an antenna 16, a radio reception unit 17 and one scan unit 18.Wherein, antenna 16 is used to receive the radio signal in external wireless radio station; Described radio reception unit 17 connects described antenna 16, and this radio reception unit 17 is used for receiving by described antenna 16 radio signal in external wireless radio station, and this CPU 11 is modulated to digital audio and video signals and output with this radio signal; Described scanning element 18 connects described antenna 16 and memory cell 12, be used at least one channel of periodic scan, obtain the attribute of each channel, with the property store of this channel in this memory cell 12, this channel is the frequency that radio system 1 may be used to receive radio signals, and it can be a plurality of and is set in advance by the user; The attribute of this channel can comprise the signal strength difference Δ V (t1-t0) during each channel signal strength V and current scan period and the last one scan.
In the present embodiment, this CPU 11 is connected with a D/A conversion unit 13, this D/A conversion unit 13 converts described CPU 11 digital audio and video signals to simulated audio signal, and, make that the user of this radio system 1 can the uppick audio frequency by an audio output unit 14 output simulated audio signals; Described CPU 11 also is connected with a display unit 15, but receiving, making the relevant information in radio signal, the voice playing process, for example information such as receive frequency of the related data of the graphic user interface of user's menu, current audio plays, radio signal by these display unit 15 display radio receiving systems 1.
Radio system 1 has the function that channel is listened in automatic selection in the present embodiment, and CPU 11 further includes a channel setting module 111, an evaluation of estimate computing module 112, a channel selection module 113, a favorite channels control module 114 and a modulation module 115.Described channel setting module 111 is used to set above-mentioned at least one favorite channels.Described evaluation of estimate computing module 112 is used for the evaluation of estimate according to each favorite channels of property calculation of above-mentioned channel.The evaluation of estimate of channel be according to the current scan period of this channel and the signal strength difference during the last one scan square with the totalling of current scan period signal strength signal intensity, i.e. P=Vn+ Δ V2 (t1-t0), wherein subscript n is represented the code name of this channel.Described channel selection module 113, be used for according to the selected channel of above-mentioned evaluation of estimate as listening to channel, for example work as radio system 1 current selected receiving channels because signal weakening, the current evaluation of estimate of this channel is during less than the first particular value L, described channel selection module 113 select a channel wherein as an alternative listen to channel, for example the evaluation of estimate of this channel is greater than the second particular value K, and in rising trend.Described favorite channels control module 14 is used for the hobby attribute that the situation of listening is changed this channel of refusing to channel according to the user, and when a channel refuse to listen a number of times to reach a specific times time, this channel is deleted from the favorite channels of setting.Described modulation module 115 is used for according to the selected frequency of listening to channel of above-mentioned channel selection module radio signal being modulated to digital audio and video signals.
It is described to consult Fig. 2, is the schematic diagram of favorite channels signal strength signal intensity.Signal strength condition when the left-half of this figure is represented the one scan cycle (T0), and the signal strength condition of right half part when representing the current scan period (T1).Abscissa represents frequency, from coordinate representation signal strength signal intensity V, A1, A2, A3, A4 represent favorite channels.(actual quantity is not in the present embodiment represented in the wherein just description of present embodiment for convenience of the quantity of signal channel.) V0 represents the signal strength signal intensity of favorite channels A4 when T0, V1 represents the signal strength signal intensity of favorite channels A4 when T1, Δ V (t1-t0) current scan period of expression and last one scan periodic signal strength difference, i.e. Δ V (t1-t0)=V1-V0.
Consult Fig. 3 and Fig. 4, for radio system is monitored the flow chart that the favorite channels situation also selects to be fit to listen to channel automatically.Channel setting module 111 is set the favorite channels (step S300) of a plurality of required scannings.Scanning element 18 is described favorite channels (step S301) periodically, and write down each channel signal strength signal intensity and with the amplitude of variation (step S302) in memory cell 12 of the signal strength signal intensity in last one scan cycle.The evaluation of estimate (step S4303) that evaluation of estimate computing module 112 calculates each channel according to the signal strength signal intensity and the difference in signal strength during current scan period and the last one scan of described each channel.Judge that whether the current evaluation of estimate P of channel that listens to is more than or equal to the first particular value L (step S404).If above-mentioned evaluation of estimate P is more than or equal to this first particular value L, then explanation is listened to channel and be need not replacing, and this scan period finishes, and waits for next scan period; If less than this first particular value L, then turning to, above-mentioned evaluation of estimate P carries out flow process B (step S405).
In flow process B, at first select the favorite channels (step S400) of evaluation of estimate maximum.Whether the evaluation of estimate P that judges this favorite channels is more than or equal to the second particular value K (step S401), if the evaluation of estimate P of this favorite channels is less than the second particular value K, illustrate that then all channels are all undesirable, this scan period finishes, and waits for next scan period.If the evaluation of estimate P of this favorite channels more than or equal to the second particular value K, then judges according to the sweep record in the memory cell 12 whether the evaluation of estimate of this channel is in ascendant trend (step S402).If the evaluation of estimate of this favorite channels is not to be in ascendant trend, then according to the next favorite channels (step S403) of the selective sequential of evaluation of estimate, and return and carry out flow process S401, again the evaluation of estimate of this favorite channels is judged.If the evaluation of estimate of this favorite channels is in ascendant trend, then with the frequency (step S404) of channel adjustment to this favorite channels.Channel preference control module 114 judges that whether this favorite channels is to refuse the channel (step S405) listened, if this favorite channels is to refuse the channel listened, then judge this channel refuse listen number of times whether greater than a predetermined value (step S406).If the refusing to listen a number of times to be less than or equal to a predetermined value then carry out described step S403 of this channel; If tin number of times of refusing of this channel is less than or equal to a predetermined value, then, then carry out described step S403 with the deletion (step S407) from the favorite channels of setting of this channel.If the non-listen channel of refusing of this favorite channels, then be provided with this favorite channels as an alternative listen to channel (step S408).
In embodiments of the present invention, selected a channel as showing that this listens to the frequency of channel by display unit 15 after listening to channel when radio system 1.
Claims (8)
1. a radio system is used for selecting automatically to listen to channel, it is characterized in that, comprising:
One channel setting module is used to set the favorite channels of a plurality of required scannings;
The one scan unit is used for the described favorite channels of periodic scan, obtains the signal strength signal intensity of each favorite channels and the difference in signal strength during current scan period and the last one scan;
One evaluation of estimate computing module is used for the evaluation of estimate of calculating each favorite channels according to the signal strength signal intensity and the difference in signal strength during current scan period and the last one scan of described each favorite channels;
One channel selection module, be used for according to the selected favorite channels of described evaluation of estimate as an alternative listen to channel, described channel selection module is in the evaluation of estimate of the current channel of listening to during less than one first particular value, according to the evaluation of estimate size select a favorite channels wherein as an alternative listen to channel; And
One radio reception module is used to receive the described radio signal of listening to channel.
2. radio system as claimed in claim 1 is characterized in that, the evaluation of estimate of listening to channel of replacement is greater than second particular value, and in rising trend.
3. radio system as claimed in claim 1 is characterized in that, also comprises a channel preference control module, is used for according to the user situation of listening of refusing of channel being changed the hobby attribute of described channel.
4. radio system as claimed in claim 3 is characterized in that, the channel preference control module be used for when a channel refuse to listen a number of times to reach a specific times time, described channel is deleted from the channel of setting.
5. a radio receiving method is used for automatic selective reception channel, it is characterized in that, comprises the steps:
Set the favorite channels of a plurality of required scannings;
The described a plurality of channels of periodic scan obtain the signal strength signal intensity of each favorite channels and the difference in signal strength during current scan period and the last one scan;
The evaluation of estimate of calculating each favorite channels according to the signal strength signal intensity and the difference in signal strength during current scan period and the last one scan of described each channel;
The current evaluation of estimate of listening to channel is during less than one first particular value, according to the evaluation of estimate size select a favorite channels wherein as an alternative listen to channel; And
Receive the described radio signal of listening to channel.
6. radio receiving method as claimed in claim 5 is characterized in that, the evaluation of estimate of the described favorite channels of replacement is greater than second particular value, and in rising trend.
7. radio receiving method as claimed in claim 5 is characterized in that, also comprises step: according to the hobby attribute of refusing listen situation change favorite channels of user to channel.
8. radio receiving method as claimed in claim 7, it is characterized in that, the hobby attribute step of changing described favorite channels comprises: a described favorite channels refuse to listen a number of times to reach a specific times time, described favorite channels is deleted from the favorite channels of setting.
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| CN2005101015626A CN1968025B (en) | 2005-11-18 | 2005-11-18 | Radio receiving set and method |
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| CN2005101015626A CN1968025B (en) | 2005-11-18 | 2005-11-18 | Radio receiving set and method |
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| CN1968025A CN1968025A (en) | 2007-05-23 |
| CN1968025B true CN1968025B (en) | 2011-09-28 |
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| CN2005101015626A Expired - Fee Related CN1968025B (en) | 2005-11-18 | 2005-11-18 | Radio receiving set and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9356757B2 (en) * | 2011-12-30 | 2016-05-31 | Broadcom Corporation | Wireless communication device capable of scanning for available base stations using reduced bandwidth |
| CN103067110A (en) * | 2012-12-17 | 2013-04-24 | 上海华勤通讯技术有限公司 | Broadcast channel searching method and broadcast receiving equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020077631A (en) * | 2001-04-02 | 2002-10-12 | 엘지전자 주식회사 | Automatic tuning method for portable digital television set |
| CN1509537A (en) * | 2000-12-27 | 2004-06-30 | 尼尔逊媒介研究股份有限公司 | Apparatus and method for measuring tuning of a digital broadcast receiver |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509537A (en) * | 2000-12-27 | 2004-06-30 | 尼尔逊媒介研究股份有限公司 | Apparatus and method for measuring tuning of a digital broadcast receiver |
| KR20020077631A (en) * | 2001-04-02 | 2002-10-12 | 엘지전자 주식회사 | Automatic tuning method for portable digital television set |
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| CN1968025A (en) | 2007-05-23 |
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