CN1953337A - Radio transmission system, method and electronic amusement device - Google Patents
Radio transmission system, method and electronic amusement device Download PDFInfo
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- CN1953337A CN1953337A CN 200510100553 CN200510100553A CN1953337A CN 1953337 A CN1953337 A CN 1953337A CN 200510100553 CN200510100553 CN 200510100553 CN 200510100553 A CN200510100553 A CN 200510100553A CN 1953337 A CN1953337 A CN 1953337A
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Abstract
The invention relates to a wireless radio emitting method, which comprises that periodically scanning at least one interference program of candidate program, and recording the character of each interference program of each candidate program; based on said character, calculating out the evaluated value of each candidate program; based on said evaluated value, selecting one candidate program as emission program; sending the wireless radio at the frequency of said emission program. The invention also provides a relative wireless radio emission system. With said invention, when the emitted wireless radio is interfered, it can automatically select emission program to confirm the signal quality.
Description
[technical field]
The present invention relates to a kind of radio transmitting system, method and electronic amusement device, be in particular a kind of radio transmitting system, method and the electronic amusement device that can select channel automatically.
[background technology]
At present, electronic amusement device is received by people widely, and people can utilize electronic amusement device to answer audio frequency or watch video, brings leisure then for people's life and loosens.Yet because the restriction of electronic amusement device self, people can be subjected to certain restriction when answering audio frequency or watching video.For example, the output of the audio frequency of general portable electronic entertainment device is exported by the earphone mode mostly, and people can only answer audio frequency in the scope of earphone cord line length so, and is a kind of infringement by the earphone listening to audio to people's ear for a long time; Also there be locating of a deficiency in the audio frequency of answering the output of portable electronic entertainment device by the earphone mode, for example in automobile, if the driver is by the earphone receiving audio frequency, it just can't very clearly hear other outside sound so, therefore can pass through the external loud speaker of portable electronic entertainment device, portable electronic entertainment device sound intermediate frequency signal is exported by loud speaker, but since in automobile because the restriction in space, if an external loud speaker can cause operation inconvenience and layout not attractive in appearance.
So a kind of radio transmitting system (consulting Fig. 1) is arranged at present, electronic amusement device 1 is modulated to radio signal with audio signal, select certain frequency that above-mentioned radio signal is transmitted into radio system 2, radio system 2 is adjusted to said frequencies, receive above-mentioned radio signal, its demodulation is reduced to audio signal, and plays by an audio output device (loud speaker) 20.In described system, radio system 2 and audio output device (loud speaker) 20 is fixed on ad-hoc location, so solved above-mentioned in automobile since electronic amusement device 1 connect that an audio output device (loud speaker) 20 causes layout be inconvenient to reach not attractive in appearance, can hear audio frequency easily again.
In traditional way, the user at first is adjusted to one to radio system, and not have the frequency of broadcast singal be empty frequency, then needs the user constantly to search in the broadcasting frequency scope to obtain a frequency that is fit to; Then, the user regulates the tranmitting frequency of electronic amusement device 1 to this sky frequency, makes this receiving system can clearly play out the audio frequency of electronic amusement device 1.In above-mentioned way, the user needs to carry out frequency adjustment by hand, and unusual trouble seems.
Therefore disclosed in No. 5970390 patent of the U.S. of bulletin on October 19th, 1999: receiving system is searched an empty frequency automatically in the broadcasting frequency scope, and shows described empty frequency by a display screen, with the frequency adjustment of emitter to this sky frequency.The deficiency that the disclosed technical scheme of No. 5970390 patent of the described U.S. exists is, itself and reckon without the empty frequency that searched under certain conditions the situation of being interfered can change, for example, in the local time that the vehicle that radio transmitting system is housed drives to another from a place, original selected empty frequency that is used to launch can be subjected to the interference in local radio station, made its emitted radio signal deleterious.
[summary of the invention]
In view of this, be necessary to provide a kind of radio transmitting system, when institute's emitted radio signal is interfered, can select transmitting channel automatically, guarantee institute's emitted radio signal quality.
In view of this, also be necessary to provide a kind of radio transmission method, when institute's emitted radio signal is interfered, can select transmitting channel automatically, guarantee institute's emitted radio signal quality.
In view of this, also be necessary to provide a kind of electronic amusement device, when institute's emitted radio signal is interfered, can select transmitting channel automatically, guarantee institute's emitted radio signal quality.
Described radio transmitting system, it includes a radio transmitting apparatus and radio system, this radio transmitting apparatus is used for a frequency emission radio signal, this radio system is used to be adjusted to said frequencies, receives above-mentioned radio signal and demodulation and is reduced to audio signal and plays; Wherein said radio transmitting apparatus includes: the one scan unit is used for each interference channel of at least one candidate's channel of periodic scan, and writes down the attribute of the interference channel of each candidate's channel; One evaluation of estimate computing module is used for the evaluation of estimate according to each candidate's channel of property calculation of above-mentioned interference channel; One channel selection module is used for according to the selected candidate's channel of above-mentioned evaluation of estimate as transmitting channel; One transmitter unit is used for the frequency of radio signal by transmitting channel sent.
Described radio transmission method includes following steps: the interference channel of at least one candidate's channel of periodic scan, and write down the attribute of each interference channel of each candidate's channel; Evaluation of estimate according to each candidate's channel of property calculation of above-mentioned interference channel; Select candidate's channel as transmitting channel according to above-mentioned evaluation of estimate; The frequency of radio signal by transmitting channel sent.
Described electronic amusement device includes: the one scan unit is used for the interference channel of at least one candidate's channel of periodic scan, and writes down the attribute of each interference channel of each candidate's channel; One evaluation of estimate computing module is used for the evaluation of estimate according to each candidate's channel of property calculation of above-mentioned interference channel; One channel selection module is used for according to the selected candidate's channel of above-mentioned evaluation of estimate as transmitting channel; One transmitter unit is used for the frequency of radio signal by this transmitting channel sent.
By radio transmitting system of the present invention, method and electronic amusement device, when its emitted radio signal is interfered, can select transmitting channel automatically, guarantee institute's emitted radio signal quality.
[description of drawings]
Fig. 1 is applied to the environment for use figure of radio transmitting system for electronic amusement device.
The Organization Chart of the electronic amusement device of radio transmitting system in Fig. 2 present embodiment.
Fig. 3 is the disturbed schematic diagram of candidate's channel.
Fig. 4 and Fig. 5 radio transmitting system are monitored candidate's channel disturbed condition automatically and are selected to be fit to the flow chart of transmitting channel.
[embodiment]
Consult shown in Figure 2ly, be the Organization Chart of the electronic amusement device of radio transmitting system in the present embodiment.Electronic amusement device 1 can be modulated into audio signal the radio signal of certain frequency in the present embodiment, and described radio signal sent to described radio system 2, be that electronic amusement device 1 can be as a radio transmitting apparatus, radio system 2 receives above-mentioned radio signal, its demodulation is reduced to audio signal, and plays (consulting shown in Figure 1) by an audio output device 20.
The primary clustering that described electronic amusement device 1 is comprised is a CPU 11.The necessary assembly that this CPU 11 connects the voice playing that is useful on, stores and be modulated into radio signal and send.In the present embodiment, this CPU 11 connects a memory cell 12, this memory cell 12 stores a plurality of voice datas, described voice data can be MP3 (Moving Picture Expert Group Layer 3) or MWA (Windows MediaAudio) or other audio format, this CPU 11 obtains to be stored in the voice data of this memory cell 12, described voice data is decoded the back with digital signal output, or the audio signal that described voice data decoding back is generated is modulated into radio signal and output; This CPU 11 also 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 by an audio output unit 14 output audio signals, make that the user of this electronic amusement device 1 can the uppick audio frequency; Described CPU 11 also is connected with a display unit 15, by this display unit 15 can show electronic amusement device 1 in voice playing, store and be modulated into the relevant information in radio signal and the process of transmitting, the messages such as tranmitting frequency of the related data of the graphical user interface of user's menu, current audio plays, radio signal for example.
The electronic amusement device 1 of present embodiment also includes an antenna 16, a transmitter unit 17 and one scan unit 18.Wherein, antenna 16 is used to receive the radio signal in external wireless radio station and sends radio signal to radio system 2; Described transmitter unit 17 connects described antenna 16, and this transmitter unit 17 is used for by described antenna 16 described CPU 11 being sent to described radio system 2 by certain frequency with the radio signal that the audio signal modulation generates; Described scanning element 18 connects described antenna 16 and memory cell 12, the interior interference channel of a frequency range that is used at least one candidate's channel of periodic scan, obtain the attribute of the interference channel of each candidate's channel, with the property store of described interference channel in described memory cell 12, described candidate's channel is the frequency that electronic amusement device 1 may be used for transmitted radio signal, and it can be a plurality of and is set in advance by the user; The attribute of described interference channel can comprise the frequency of each interference channel signal strength signal intensity V and interference channel.
In the present embodiment among the electronic amusement device 1 Central Processing Unit 11 further include candidate's channel setting module 111, an evaluation of estimate computing module 112, a channel selection module 114, a decoder module 116 and a modulation module 118.Described candidate's channel setting module 111 is used to set above-mentioned at least one candidate's channel.Described evaluation of estimate computing module 112 is used for the evaluation of estimate according to each candidate's channel of property calculation of above-mentioned interference channel.The evaluation of estimate of candidate's channel is the totalling according to the interference value Q of all interference channels of this candidate's channel, i.e. P=Σ Q.The interference value Q of each interference channel is for to calculate according to the frequency of current scan period signal strength signal intensity V, current scan period and last one scan periodic signal strength difference Δ V (t1-t0), interference channel and the difference on the frequency D (consulting shown in Figure 3) of candidate's channel, this interference value Q computing formula is: Q=(V+ Δ V2 (t1-t0))/D2), so ((V+ Δ V2 (t1-t0))/D2), wherein subscript n is represented the code name of this candidate's channel to the evaluation of estimate Pn=Σ Q=Σ of candidate's channel.Described channel selection module 114, be used for according to the selected candidate's channel of above-mentioned evaluation of estimate as transmitting channel, for example work as electronic amusement device 1 current selected transmitting channel owing to be interfered, when the current evaluation of estimate of this channel is less than or equal to the first particular value L, described channel selection module 114 selects wherein candidate's channel as the transmitting channel of replacing, for example the evaluation of estimate of this candidate's channel is greater than the second particular value K, and in rising trend.Described decoder module 116 be used for the voice data that is stored in described memory cell 12 various audio formats decode the back export with digital audio and video signals.Described modulation module 118 is used for according to the frequency of the selected transmitting channel of above-mentioned channel selection module digital audio and video signals being modulated to radio signal.
In the present embodiment, the user can preestablish candidate's channel that electronic amusement device 1 may be used for transmitted radio signal by candidate's channel setting module 111.When the user uses this electronic amusement device 1, can select candidate's channel as transmitting channel (current transmitting channel) to radio system 2 transmitted radio signal, to be electronic amusement device 1 modulate the back according to the frequency of this transmitting channel to audio signal to this radio signal generates.Certainly selected candidate's channel as transmitting channel also can be electronic amusement device 1 channel that last time, transmitted radio signal was adopted.In the radio signal emission process, when being subjected to outside interference owing to transmitting channel, radio transmitting system is monitored candidate's channel disturbed condition automatically and can be selected to be fit to transmitting channel automatically.
In embodiments of the present invention, radio system 2 can include an inductor (figure does not show), and its frequency and the local oscillating frequency that can sense radio system 2 received radio signals is poor.But when the difference that receives the frequency of radio signal and local oscillating frequency changes, it can determine to receive the frequency of radio signal according to the difference of frequency that receives radio signal and local oscillating frequency, and control radio system 2 is adjusted to corresponding frequencies automatically, makes radio system 2 to be reduced to audio signal and to play receiving the radio signal demodulation.
It is described to consult Fig. 3, is the disturbed schematic diagram of candidate's channel.Disturbed situation when the right half part of this figure is represented the current scan period (T1), and the disturbed situation of left-half when representing the one scan cycle (T0).Abscissa represents frequency, from coordinate representation signal strength signal intensity V, P1, P2, P3 represent candidate's channel, A1, A2, A3 are illustrated in existing interference channel around P1, P2, the P3.Actual quantity is not in the present embodiment represented in the wherein just description of present embodiment for convenience of the quantity of candidate's channel and interference channel.V1 represents the signal strength signal intensity of interference channel A3 when T1, and V2 represents the signal strength signal intensity of interference channel A3 when T0, Δ V (t1-t0) current scan period of expression and last one scan periodic signal signal strength difference, i.e. Δ V (t1-t0)=V1-V0.D represents the frequency of interference channel (A3) and the difference on the frequency of candidate's channel (P2).
Consult Fig. 4 and Fig. 5, monitor the flow chart of candidate's channel disturbed condition and the suitable transmitting channel of selection for radio transmitting system automatically.When electronic amusement device 1 is closed transmitted radio signal at every turn in the present embodiment (when for example shutting down), can with preceding scanning result delete, when electronic amusement device 1 transmitted radio signal again with writing scan result again.Set first candidate's channel as current channel scanning (step S410).The particular frequency range (step S412) of scanning element 18 these preceding channel scannings of scanning.Determine the interior existing interference channel (step S414) of particular frequency range of this channel scanning.The attribute of above-mentioned each interference channel of record is as signal strength signal intensity Vt (subscript t represents the scan period) and frequency in memory cell 12 (step S416).Judge whether to be scanning for the first time, promptly whether the current scan period (t) is 1 (step S418).If above-mentioned judged result is for denying, evaluation of estimate computing module 112 calculates the evaluation of estimate of this channel scanning, this evaluation of estimate is for to calculate according to current scan period signal strength signal intensity Vt, current scan period and last one scan periodic signal strength difference Δ V (Δ V=Vt-V (t-1)), the frequency of interference channel and the difference on the frequency D of candidate's channel, the computing formula of the evaluation of estimate of candidate's channel is: Pnt=Σ ((Vt+ Δ V2)/D2), wherein subscript n is represented the code name of this candidate's channel, and subscript t represents the scan period (step S420).Judge whether current channel scanning is last candidate's channel (step S422).If current channel scanning is last candidate's channel, the scan period, (t) added 1, and turned to execution flow process B (step S424); And if current channel scanning is not last candidate's channel, then setting next candidate's channel is current channel scanning, and returns again and carry out flow process S412 (step S426).In step S418, if judged result is for being, promptly the current scan period is scanning (T=1) for the first time, judges then whether current channel scanning is last candidate's channel (step S428); If current channel scanning is last candidate's channel, the scan period, (t) added 1, and this scanning process finishes to wait for next scan period (step S430) again.If current channel scanning is not last candidate's channel, then flow process turns to execution in step S426.
In flow process B, whether the evaluation of estimate P that at first judges current transmitting channel is greater than the first particular value L (step S510).If above-mentioned judged result illustrates then that for being current transmitting channel need not to change, this scan period finishes, and waits for next scan period.If above-mentioned judged result is that promptly the evaluation of estimate P of current transmitting channel is not less than or equal to the first particular value L, candidate's channel (step S512) of assessment evaluation of estimate maximum.Is the evaluation of estimate P that judges this candidate's channel greater than the second particular value K (step S514)? if above-mentioned judged result illustrates then that for not all candidate's channels are all undesirable, this scan period finishes, and waits for next scan period.If above-mentioned judged result is for being that promptly the evaluation of estimate of this candidate's channel then judges according to the sweep record in the memory cell 12 whether the evaluation of estimate of this candidate's channel is in ascendant trend (step S516) greater than the second particular value K.If the evaluation of estimate of this candidate's channel is not to be in ascendant trend, then assess next candidate's channel, and return and carry out flow process S514 according to the order of evaluation of estimate, again the evaluation of estimate of this candidate's channel is judged (step S518).If the evaluation of estimate of this candidate's channel is in ascendant trend, then selected this candidate's channel is waited for next scan period (step S520) again as the transmitting channel of replacing.
In embodiments of the present invention, can also be after electronic amusement device 1 has selected candidate's channel as transmitting channel by the frequency of display unit 15 these transmitting channels of demonstration, the user is by regulating radio system 2 to this frequency, can receive electronic amusement device 1 emitted radio signal, and can be reduced to audio signal and play receiving the radio signal demodulation.
Claims (20)
1. radio transmitting system, it is used for selecting automatically transmitting channel, include a radio transmitting apparatus and radio system, this radio transmitting apparatus is used for a frequency emission radio signal, this radio system is used to be adjusted to said frequencies, receive above-mentioned radio signal and demodulation and be reduced to audio signal and play, it is characterized in that:
Described radio transmitting apparatus includes:
The one scan unit is used for each interference channel of at least one candidate's channel of periodic scan, and writes down the attribute of the interference channel of each candidate's channel;
One evaluation of estimate computing module is used for the evaluation of estimate according to each candidate's channel of property calculation of above-mentioned interference channel;
One channel selection module is used for according to the selected wherein candidate's channel of above-mentioned evaluation of estimate as transmitting channel;
One transmitter unit is used for carrying out transmitted radio signal by the frequency of transmitting channel.
2. radio transmitting system as claimed in claim 1 is characterized in that, this radio transmitting apparatus also includes: candidate's channel setting module is used to set above-mentioned at least one candidate's channel.
3. radio transmitting system as claimed in claim 1 is characterized in that, the attribute of the interference channel of scanning element record comprises the frequency and the signal strength signal intensity of interference channel.
4. radio transmitting system as claimed in claim 3, it is characterized in that the evaluation of estimate of evaluation of estimate computing module calculated candidate channel is calculated for current scan period signal strength signal intensity V, current scan period and last one scan periodic signal strength difference Δ V (t1-t0), the frequency of interference channel and the difference on the frequency D of candidate's channel according to each interference channel of this candidate's channel.
5. radio transmitting system as claimed in claim 4 is characterized in that, the evaluation of estimate computing formula of candidate's channel is: P=∑ ((Vn+ Δ V2 (t1-t0))/Dn2).
6. radio transmitting system as claimed in claim 5 is characterized in that, the channel selection module is the evaluation of estimate of current transmitting channel during less than one first particular value, selects wherein candidate's channel as the transmitting channel of replacing according to evaluation of estimate.
7. radio transmitting system as claimed in claim 6 is characterized in that the evaluation of estimate of the transmitting channel of replacement is greater than second particular value, and it is in rising trend.
8. radio transmission method, it is used for selecting automatically transmitting channel, it is characterized in that, includes following steps:
The interference channel of at least one candidate's channel of periodic scan writes down the attribute of each interference channel of each candidate's channel;
Evaluation of estimate according to each candidate's channel of property calculation of above-mentioned interference channel;
Select candidate's channel as transmitting channel according to above-mentioned evaluation of estimate;
Frequency emission radio signal with transmitting channel.
9. radio transmission method as claimed in claim 8 is characterized in that, also includes: the step of setting above-mentioned at least one candidate's channel.
10. radio transmission method as claimed in claim 8 is characterized in that, the attribute of the interference channel of scan module record comprises the frequency and the signal strength signal intensity of interference channel.
11. radio transmission method as claimed in claim 10, it is characterized in that the evaluation of estimate of calculated candidate channel is calculated for current scan period signal strength signal intensity V, current scan period and last one scan periodic signal strength difference Δ V (t1-t0), the frequency of interference channel and the frequency-splitting D of candidate's channel according to each interference channel of this candidate's channel.
12. radio transmission method as claimed in claim 11 is characterized in that, the evaluation of estimate computing formula of candidate's channel is: P=∑ ((Vn+ Δ V2 (t1-t0))/Dn2).
13. radio transmission method as claimed in claim 12, it is characterized in that, selected candidate's channel is the evaluation of estimate of current transmitting channel during less than one first particular value as the transmitting channel of replacing, and selects wherein candidate's channel as the transmitting channel of replacing according to evaluation of estimate.
14. radio transmission method as claimed in claim 13 is characterized in that the evaluation of estimate of the transmitting channel of replacement is greater than second particular value, and it is in rising trend.
15. an electronic amusement device, it is used for selecting automatically the frequency emission radio signal of transmitting channel with this transmitting channel, it is characterized in that it includes:
The one scan unit is used for the interference channel of at least one candidate's channel of periodic scan, and writes down the attribute of each interference channel of each candidate's channel;
One evaluation of estimate computing module is used for the evaluation of estimate according to each candidate's channel of property calculation of above-mentioned interference channel;
One channel selection module is used for according to the selected candidate's channel of above-mentioned evaluation of estimate as transmitting channel;
One transmitter unit is used for the frequency of radio signal by this transmitting channel sent.
16. electronic amusement device as claimed in claim 15 is characterized in that, this radio transmitting apparatus also includes: candidate's channel setting module is used to set above-mentioned at least one candidate's channel.
17. electronic amusement device as claimed in claim 15 is characterized in that, the attribute of the interference channel of scan module record comprises the frequency and the signal strength signal intensity of interference channel.
18. electronic amusement device as claimed in claim 17, it is characterized in that the evaluation of estimate of evaluation of estimate computing module calculated candidate channel is calculated for current scan period signal strength signal intensity V, current scan period and last one scan periodic signal strength difference Δ V (t1-t0), the frequency of interference channel and the frequency-splitting D of candidate's channel according to each interference channel of this candidate's channel.
19. electronic amusement device as claimed in claim 15 is characterized in that, the channel selection module is the evaluation of estimate of current transmitting channel during less than one first particular value, selects wherein candidate's channel as the transmitting channel of replacing according to evaluation of estimate.
20. electronic amusement device as claimed in claim 15 is characterized in that, the evaluation of estimate of the transmitting channel of replacement is greater than second particular value, and it is in rising trend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101005535A CN1953337B (en) | 2005-10-19 | 2005-10-19 | Radio transmission system, method and electronic amusement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101005535A CN1953337B (en) | 2005-10-19 | 2005-10-19 | Radio transmission system, method and electronic amusement device |
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| Publication Number | Publication Date |
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| CN1953337A true CN1953337A (en) | 2007-04-25 |
| CN1953337B CN1953337B (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005101005535A Expired - Fee Related CN1953337B (en) | 2005-10-19 | 2005-10-19 | Radio transmission system, method and electronic amusement device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911952A (en) * | 2015-12-23 | 2017-06-30 | 天津三星电子有限公司 | A kind of display system |
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2005
- 2005-10-19 CN CN2005101005535A patent/CN1953337B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911952A (en) * | 2015-12-23 | 2017-06-30 | 天津三星电子有限公司 | A kind of display system |
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| CN1953337B (en) | 2011-11-23 |
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