CN1700622A - Method for searching available frequency band used in digital broadcast receiving and retransmitting device - Google Patents
Method for searching available frequency band used in digital broadcast receiving and retransmitting device Download PDFInfo
- Publication number
- CN1700622A CN1700622A CN 200510078856 CN200510078856A CN1700622A CN 1700622 A CN1700622 A CN 1700622A CN 200510078856 CN200510078856 CN 200510078856 CN 200510078856 A CN200510078856 A CN 200510078856A CN 1700622 A CN1700622 A CN 1700622A
- Authority
- CN
- China
- Prior art keywords
- frequency
- search
- digital broadcast
- searching
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
This invention relates to one method to automatically useful waveband searching method in digital broadcasting radio and comprises one receiving digital broadcasting emission digital signals transferring device, one digital broadcasting signals to receive the digital broadcasting, one play device, wherein, the method can search the band in the tuning band and displays the band when it is found to provide the users with relative frequency band in on frequency codes.
Description
Technical field
The invention relates to a kind of method of automatic searching available frequency band, especially finger is a kind of searches untapped frequency band in the fm band scope of setting, and with the method for this frequency band as the transmission carrier frequency between transmission end device and receiving end device.
Background technology
Along with making rapid progress of Information technology, popular obtainable information is also handed over biography, print media, broadcasting, TV from mouth ear in the past, the progressive transmission that can see through world-wide web till now, crossed over the restriction on national boundaries, real-time sound and image were delivered to the other party of earth another side.And for past people, see through broadcasting and broadcast the mode of voice signal, mainly be that society is rely and obtained the media vehicles of extraneous up-to-date information, but rise along with TV and film media, it can see through image and the sound that screen and loudspeaker are play simultaneously, can visually produce bigger shock for society, make broadcasting become less important medium thus, and the population support of use broadcasting also so gradually descend and runs off.But also owing on analog broadcast technology (as FM amplitude modulation and AM frequency modulation), had sound quality low in the past, be subject to disturb, be unfavorable for the quality that receives during fast moving, can be subjected to transmitting power and influence broadcast quality, and subcarrier can't cooperate the broadcasting station that the shortcomings such as service of information are provided, make it in operation, suffer from insoluble bottleneck, but to this day because the progress of numeral science and technology, see through digital audio communication broadcasting (Digital Audio Broadcasting, DAB), can solve above-mentioned shortcoming, numeral audio communication broadcasting is mainly stipulated out in 1992 by the WARC meeting, it includes VHF frequency range: 170-240MHz or L frequency range: 1452-1492MHz, its main advantage of numeral audio communication broadcasting is to provide high-quality, dual track, multichannel sterego broadcasting, the quality that its tonequality can be play as the CD disc, and at multipath, shade, move and reach the following of static environment, its receiving quality is all splendid, the ability that very high anti-interference and error correction is also arranged, very high power efficiency is arranged, and its transmitter power also have only the FM transmitter ten minutes one to one of percentage, influence for environment is less, and its cover ratio more can reach 95%, time validity 99%, very and can attach the transmission additional information.
Though having than analog broadcasting, digital audio communication broadcasting has preferable audio communication playback quality, and splendid audio communication receiving quality, but owing to use the user of general broadcast reception playing device at present, if in order to listen to digital broadcasting information, except need are bought digital broadcasting transmitter, more necessary replacing or its original broadcast reception playing device of upgrading, can go to receive and play the content of digital broadcasting information, so will cause one on the use cost to bear greatly, and cause the inconvenience in the use, and make digital broadcasting be difficult at large to promote and use to masses.
The present invention promptly cooperates this conception, makes existing automobile audio or other audio-visual equipment can provide more audiovisual to select, can receive and play the program of digital broadcasting equally under the prerequisite that does not change the existing equipment framework as far as possible, to improve its additional function and value.
Summary of the invention
Main purpose of the present invention, be to provide a kind of method for searching available frequency band that is applied to digital broadcast receiving and retransmitting device, the digital broadcast receiving and retransmitting device of the digital broadcast signal that its receiving digital broadcast transmitting station of mainly arranging in pairs or groups sends, and the digital broadcast signal of a receiving digital broadcast receiving and retransmitting device transmission, and the broadcast reception playing device of being play, make and only to have that user that general broadcast receives playing device does not need to change in addition and the computer hardware of its broadcast reception playing device of upgrading, after can digital broadcast signal being changed through digital broadcast receiving and retransmitting device, and in the fm band scope of setting, search the untapped radio wave frequency wave band of this broadcast singal, radio wave frequency when launching carrier wave with this frequency band as digital broadcast receiving and retransmitting device receives and plays to provide existing broadcast reception playing device can adjust same frequency code name.
For reaching above-mentioned purpose, digital broadcast receiving and retransmitting device of the present invention includes a receiving element, a microprocessor, a communication unit, channel detecting setup unit and an I/O unit.Wherein receiving element has an antenna, in order to the digital broadcast signal of receiving digital broadcast cell site transmission, and is output in microprocessor after treatment; Microprocessor transmits the digital signal of coming with receiving element and gives decompression and reduction, makes that voice signal and the program data data relevant with the voice signal content are separated, and exports the communication unit processing to; Communication unit mainly has the encoder of an antenna and a chip form, and receive voice signal and the programme information that separates from microprocessor, utilize encoder suitably to encode respectively after (coding), produce a carrier signal again, and carrier signal is launched via antenna according to selected frequency band, receiving terminal then can effectively receive this carrier signal in the transmission range by broadcast reception playing devices such as a broadcast receiver or automobile-used sound equipments, and the playing function that itself is had according to the broadcast reception playing device and remove to select one or play sound signal or programme information person simultaneously.Channel detecting setup unit is in order to set the frequency band of communication unit emission carrier wave, at first in the scope that can receive extraneous each broadcasting station institute frequency of utilization wave band at communication unit, go to search and detect the frequency of its empty (not using), to set frequency band as communication unit emission carrier wave; I/O unit comprises at least one display panels that shows captions or figure for the button and of user's selection operation; Wherein display floater is in order to the numerical value or the information of display frequency wave band; Button then provides the user to import the instruction of its decision.
The present invention also discloses a kind of method for searching available frequency band that is applied to digital broadcast receiving and retransmitting device, it searches untapped frequency band in a setpoint frequency scope, and with so that behind this receiving and retransmitting device receiving digital broadcast signal, see through this frequency band and send respective signal for broadcast reception playing device reception, it is characterized in that this method comprises:
Step a: set the initial frequency of searching;
Step b: set the frequency interval of searching;
Step c: begin and adjustment gradually from this initial frequency, search whether any frequency signal is arranged on each channel with this frequency interval;
Steps d: on search obtaining a channel, during no frequency signal, be this available frequency band with this frequency setting; Step e: show this available frequency band.
Wherein the frequency range of this search is set at fm band 87.5MHz～108MHz.
Wherein the frequency range of this search is to import setting via the user.
Wherein this initial frequency is the minimum value of this setpoint frequency scope among the step a.
Wherein be to begin among the step c with this initial frequency, and according to this frequency interval as increment, continue to search.
Wherein this initial frequency is the maximum of this setpoint frequency scope among the step a.
Wherein be to begin among the step c with this initial frequency, and according to this frequency interval as depreciation, continue to search.
A kind of digital broadcast signal of the present invention is applied to the method for the automatic search available channel of radio-wave mode output, it is characterized in that it comprises:
Step a: set the frequency range of searching;
Step b: set the initial frequency of searching;
Step c: set the frequency interval of searching;
Does steps d: beginning to search have any frequency signal? if be, execution in step e; If not, execution in step g;
Step e: note down this dummy frequencies; Judge whether to continue to search? if be, execution in step g, if not, execution in step f;
Step f: set the frequency of this dummy frequencies for the emission carrier wave, and execution in step k;
Step g: judge whether to finish the search of the frequency range of this setting? if be, execution in step i, if not, execution in step h;
Step h: continue to search the frequency signal in the next channel, get back to steps d;
Step I: judged whether to search dummy frequencies? if be, execution in step j, if not, execution in step k;
Step j: in one or a plurality of dummy frequencies that searches, select a dummy frequencies wherein to be set at the frequency of this emission carrier wave;
Step k: finish.
A kind of wireless signal transfer method of the present invention is used for one first electronic installation and is transmitted a wireless signal for second electronic device reception, it is characterized in that this method comprises:
A. search the wireless available channel of this first electronic installation and second electronic device place environment empty from this first electronic installation;
B. show this available channel that obtains through searching in this first electronic installation, the receiving channels of this second electronic device is set in this available channel for the user;
C. see through this available channel from this first electronic installation and send signal for this second electronic device reception.
Wherein, this step a also comprises following minor step:
A1. set initial frequency;
A2. setpoint frequency at interval;
A3. begin and adjustment gradually from this initial frequency, search whether any frequency signal is arranged on each channel with this frequency interval;
A4. on search obtaining a channel, during no frequency signal, be this available channel with this channel setting.
Wherein, this step a also is contained in the step that frequency range is searched in the last setting of minor step a1, and this initial frequency promptly is that one of them is selected from the minimum value of this frequency range or maximum among the step a1.
Description of drawings
Technology contents of the present invention and effect will describe in detail in will describing in detail in the preferred embodiment of following conjunction with figs., wherein:
Fig. 1 is digital broadcast receiving and retransmitting device and digital broadcast transmitting station and the common system architecture diagram of forming of broadcast reception playing device.
Fig. 2 is the circuit block diagram of digital broadcast receiving and retransmitting device preferred embodiment.
Fig. 3 is the common system block diagrams of forming of digital broadcast receiving and retransmitting device and digital broadcast transmitting station, broadcast reception playing device and f-m broadcast station.
Fig. 4 receives the main implementation step flow chart of retransmission method preferred embodiment for digital broadcasting.
Fig. 5 is the flow chart of the channel method for searching of channel detecting setup unit.
Embodiment
As shown in Figure 1, for the present invention is applied to the search available channel method preferred embodiment of digital broadcast receiving and retransmitting device, an applied digital broadcast receiving and retransmitting device 20 and a digital broadcast transmitting station 10, a broadcast reception playing device 30 common system architecture schematic diagrames of forming.As shown in the figure, digital broadcast receiving and retransmitting device 20 is to be example with a portable electronic devices in the present embodiment, 30 of broadcast reception playing devices are one to be installed on the automobile-used sound equipment of vehicle 40, and can receive the radio wave signal (as: modulating FM, amplitude modulation AM) that the general broadcast radio station sends; Wherein this system launches digital broadcast signal 11 by digital broadcast transmitting station 10, and by digital broadcast receiving and retransmitting device 20 receiving digital broadcast signals 11 and via after the demodulation reduction, again conversion of signals is become frequency modulated carrier, and carrier signal is sent to the external world with specific frequency band; And broadcast reception playing device 30 and can corresponding adjustment with the frequency band of digital broadcast receiving and retransmitting device 20 emissions in same frequency code name, with this carrier signal of reception in place, place certain limit, and demodulation and play this signal content.In addition, in other changed example, digital broadcast receiving and retransmitting device 20 also can be the non-fixed installation form of taking, but also family expenses sound equipment, blue-tooth earphone or other are fixing maybe can take form for 30 of broadcast reception playing devices, was exceeded but not lift with present embodiment.
As shown in Figure 2, be the circuit block diagram of these digital broadcast receiving and retransmitting device 20 preferred embodiments.As shown in the figure, digital broadcast receiving and retransmitting device 20 mainly comprises: receiving element 21, microprocessor 22, communication unit 23, channel detecting setup unit 24 and I/O unit 25 (I/O).Wherein, channel detecting setup unit 24 electrically connects with communication unit 23, I/O unit 25; And microprocessor 22 electrically connects with receiving element 21, communication unit 23, channel detecting setup unit 24 and I/O unit 25 respectively.
Cooperate shown in Figure 3, receiving element 21 has an antenna 211 and other necessary circuitry (figure does not show) in the present embodiment, digital broadcasting radiofrequency signal 11 in order to 10 transmissions of receiving digital broadcast cell site, and after radiofrequency signal 11 is downconverted to intermediate frequency (IF) signal, conversion is reduced into digital signal, and handles being output in microprocessor 22 after the digital signal conciliation.
Microprocessor 22 transmits the digital signal of coming with receiving element 21 and gives decompression and reduction in the present embodiment, make that voice signal and the program material (for example: programm name, host, title of the song etc.) relevant with the voice signal content are separated, and export communication unit 23 processing to; Wherein the described microprocessor 22 of present embodiment is to be a digital signal processor (DigitalSignal Processor, DSP), make microprocessor 22 except the function that can do general calculation process, simultaneously can carry out decompression and reduction in addition at voice signal, and digital signal processor both can be example, in hardware in the present invention, and it is set also to can be form of software.
Communication unit 23 mainly has the encoder 232 of an antenna 231 and a chip form in the present embodiment, and this antenna 231 also can receive the broadcast singal 51 that all broadcast sources (as a f-m broadcast station 50) send in the atmosphere in its place, place certain limit.Communication unit 23 receives voice signal and the programme information that separates from microprocessor 22, and utilize encoder 232 suitably to encode respectively after (coding), produce a frequency modulation (FM) carrier signal 230 again (as being example with FM, Word messages such as programme information can carry in subcarrier, send with the RDS specification), and according to a frequency band that uses (blank) that utilizes acquisition that the present invention searches with carrier signal 230 via antenna 231 emissions, receiving terminal then can be by the frequency band of broadcast reception playing device 30 corresponding adjustment such as a broadcast receiver or automobile-used sound equipment and digital broadcast receiving and retransmitting device 20 emissions in same frequency code name, effectively receiving this carrier signal 230 in the scope, and the playing function that itself is had according to broadcast reception playing device 30 and go sound or the programme information selecting to play in the carrier signal 230 wherein at least a.Wherein the described encoder 232 of present embodiment is to be a kind of RDS (Radio Data System) encoder 232, RDS also claims frequency modulated subcarrier (Radio Data System, RDS) system, because RDS is the data communication system in a kind of FM of being attached to broadcasting, and the frequency that can utilize general f-m broadcast station 50 to broadcast, the coding of adding part is used for transmission information to specific group, such as can the display of broadcast name of station etc. Word message, after wherein digital broadcast signal 11 contents that received being given demodulation, and the voice signal and the programme information that are dissociated are encoded via RDS encoder 232, and see through and to transfer to the external world after communication unit 23 converts fm carrier signal 230 to, the user uses when having broadcast reception playing device 30 acknowledge(ment) signals 230 of RDS function, can receive incidental voice signal and programme information content simultaneously, and play and show.
Present embodiment mid band detecting setup unit 24 is in order to set the frequency band of communication unit 23 emission carrier signals 230, at first in the scope that can receive extraneous each broadcasting station institute frequency of utilization wave band at communication unit 23, remove to search and detect the frequency band of its empty (not using), to set frequency band as communication unit 23 emission carrier signals 230.
I/O unit 25 (I/O) comprises at least one display panels 252 that shows captions or figure for the button 251 and of user's selection operation in the present embodiment.Wherein this display floater 252 is in order to the numerical value or the information of display frequency wave band; For example: frequency range, initial frequency that the frequency band during the emission carrier signal, the not frequency of utilization wave band that searches, setting will be searched, and the numerical value such as interval of searching frequency; This button 251 then provides the user to import the instruction of its decision.
As shown in Figure 3, broadcast reception playing device 30 mainly comprises a receiving element 31, a broadcast unit 32 and a converting unit 33 in the present embodiment.
The carrier signal 230 (voice signal and the programme information that comprise digital broadcasting information) that receiving element 31 cooperates the communication unit 23 of receiving digital broadcast receiving and retransmitting device 20 to be transmitted, and mainly has the decoder 312 of an antenna 311 and a chip form, after antenna 311 includes the carrier signal of voice signal and programme information in reception, by exporting converting unit 33 again to after decoder 312 decodings.
32 of broadcast units comprise the display panels 322 that a loud speaker that plays sound 321 and shows captions or figure.
Voice signal after converting unit 33 further will be deciphered and programme information are converted to and are suitable for the form that broadcast unit 32 is play, converting unit 33 comprises a sound effect processor 331 and a character converter 332 of chip pattern in the present embodiment, convert voice signal and programme information to be suitable for loud speaker 321 and display panels 322 broadcast demonstrations form respectively, then export loud speaker 321 and display panels 322 broadcast demonstrations respectively to.
As shown in Figure 4, concise and to the point speech, the association running that above-mentioned digital broadcast receiving and retransmitting device 20 and broadcast reception playing device are 30, mainly comprise the steps: shown in step 401,402, digital broadcast receiving and retransmitting device 20 receives a digital broadcast signal 11 from a digital broadcast transmitting station 10, then isolates voice signal and programme information from this digital broadcast signal 11;
Shown in the step 403,404, voice signal and programme information are suitably encoded respectively for another example, emission then receives for broadcast reception playing device 30.
To shown in 407, behind the voice signal and programme information decoding of broadcast reception playing device 30 with reception, be converted to the form that is suitable for broadcast unit 32 broadcasts respectively as step 405, then play demonstration by loud speaker 321 and display panels 322 respectively.
As shown in Figure 5, this is applied to the automatic method for searching available frequency band preferred embodiment of digital broadcast receiving and retransmitting device, be to be example with the application program that is stored in channels detecting setup units 24 in the digital broadcast receiving and retransmitting device 20, this program will make digital broadcast receiving and retransmitting device 20 carry out following step automatically after carrying out:
Shown in step 501-503, the user can detect the demonstration of setup unit 24 and liquid crystal panel 252 via channel, the operation of button 251 is selected to set frequency range, the initial frequency that will search, and set the size of searching frequency interval; Then be meant in the present embodiment and be set in fm band (in the scope of 87.5MHz～108MHz), as the scope of dummy frequencies detecting, and to set 87.5MHz be initial frequency, and set every interval 0.1MHz and detect and search once; In other alternate embodiment, the setting at the interval of the frequency range of search, initial frequency and frequency, one or all can be the default value of channel detecting setup unit.
Shown in step 504, begin to search whether to receive the broadcast singal that any broadcast source sends in each frequency band with predefined initial frequency minimum value, for example be to begin to search frequency signal at this channel of 87.5MHz earlier in this example; Yet its initial frequency also can be begun to search by the maximum of the channel scope that sets, for example: begin down to search from the frequency of 108MHz;
For another example shown in the step 505, channel detecting setup unit 24 can detecting judge communication unit 23 in this frequency band (for example: 87.5MHz) broadcast singal that receives any broadcast source transmission is arranged? if do not detect then execution in step 506 of any broadcast singal; Anti-, if any detecting then execution in step 509 of any frequency signal;
Shown in step 506, the result does not find to have any broadcast singal at this frequency band when detecting, the frequency band that representative is detected is to be dummy frequencies, be untapped frequency band, can report the frequency band numerical value that searches to microprocessor 22 this moment, and see through information and numerical value that this display 252 shows the frequency band that has searched;
Shown in step 507, owing to searched the frequency band of a dummy frequencies when can be used as communication unit 23 emission carrier signals 230, therefore, seen through the instruction that a button 251 is selected its decisions of input by the user, to continue to search with decision? if be, execution in step 509; Anti-, then execution in step 508; Shown in step 508, the frequency band when setting this dummy frequencies that searches and be communication unit 23 emission carrier signals 230, and see through that this display 252 shows; According to the numerical value of the shown wave band of setpoint frequency, listen to frequency in same frequency code name for what the user can adjust broadcast reception playing device 30, be convenient to carry out reception carrier signal 230, execution in step 514;
Shown in step 509, judge whether to finish the frequency range of searching, setting; If be, execution in step 510; Anti-, then execution in step 513;
Shown in step 510, finish to search;
Shown in step 511, judge in the search area of setting, whether to have to search blank frequency; If be, execution in step s512; Anti-, execution in step s514 then;
Shown in step s512, show one or the dummy frequencies that searches of complex by display floater 252, the frequency band the when user sees through button 251 inputs and selects that wherein a dummy frequencies is set at communication unit 23 emission carrier signals 230; Execution in step s514 then; At this similarly, also the specified frequency code name is shown on this display floater 252, listens to frequency in same frequency code name, be convenient to carry out receiving broadcast content for what the user can adjust broadcast reception playing device 30;
Shown in step s513, whether as variable value, continuing to search next channel has frequency signal according to the frequency interval size that sets in advance; And get back to step s505;
At last shown in step s514, the power cut-off flow process.
In sum, the present invention discloses a kind of method for searching available frequency band that is applied to digital broadcast receiving and retransmitting device, the arrange in pairs or groups broadcast reception playing device 30 of a receiving terminal, make digital broadcast receiving and retransmitting device 20 after receiving digital broadcast information, see through this method and in the fm band scope of setting, search wherein untapped wireless frequency wave band, and with this frequency band the radio wave frequency during as digital broadcast receiving and retransmitting device 20 emission carrier waves, that can adjust broadcast reception playing device 30 simultaneously listens to frequency in same frequency code name, so that carry out the carrier signal that receiving digital broadcast receiving and retransmitting device 20 sends, and see through broadcast reception playing device 30 is play this carrier signal on this frequency band of adjusting to content; In other words, for existing FM broadcasting audience and user, if when wishing the service of other receiving digital broadcast, do not need to go again to change or its original broadcast reception playing device 30 of upgrading, can see through this method and make original broadcast reception playing device 30 see through the program and the information material of general fm band (untapped frequency band) receiving digital broadcast.
Broad sense is sayed it, the present invention also discloses a kind of wireless signal transfer method, use for one first electronic installation (going up in the example is digital broadcast receiving and retransmitting device 20) and transmit a wireless signal for second electronic device reception (going up in the example is broadcast reception playing device 30), this method comprises: a. searches the wireless available frequency band of first electronic installation and second electronic device place environment empty from first electronic installation; B. show this available frequency band that obtains through searching in first electronic installation, the receiving channels of second electronic device is set in this available frequency band for the user; C. see through this available frequency band from first electronic installation and send signal for the second electronic device reception.Wherein, step a also comprises following minor step: and setting search frequency range (go up in the example is 87.5MHz～108MHz); Set initial frequency (going up in the example is fm band 87.5MHz), and initial frequency promptly is minimum value or the maximum person of selecting wherein from this frequency range; Setpoint frequency is (going up in the example is 0.1MHz) at interval; Begin and adjustment gradually from this initial frequency, search whether any frequency signal is arranged on each frequency band with this frequency interval; On search obtaining a frequency band, during no frequency signal, this frequency band is set at this available frequency band.
Only above-described, it only is a preferred embodiment of the present invention, be not to be used for limiting scope of the invention process, every equalization of doing according to the described shape of the present patent application claim, structure, feature and spirit changes and modifies, and all should be included in the claim of the present invention.
Claims (11)
1, a kind of method for searching available frequency band that is applied to digital broadcast receiving and retransmitting device, it searches untapped frequency band in a setpoint frequency scope, and with so that behind this receiving and retransmitting device receiving digital broadcast signal, see through this frequency band and send respective signal for broadcast reception playing device reception, it is characterized in that this method comprises:
Step a: set the initial frequency of searching;
Step b: set the frequency interval of searching;
Step c: begin and adjustment gradually from this initial frequency, search whether any frequency signal is arranged on each channel with this frequency interval;
Steps d: on search obtaining a channel, during no frequency signal, be this available frequency band with this frequency setting; Step e: show this available frequency band.
2, the method for searching available frequency band that is applied to digital broadcast receiving and retransmitting device as claimed in claim 1 is characterized in that, wherein the frequency range of this search is set at fm band 87.5MHz～108MHz.
3, the method for searching available frequency band that is applied to digital broadcast receiving and retransmitting device as claimed in claim 1 is characterized in that, wherein the frequency range of this search is to import setting via the user.
4, the method for searching available frequency band that is applied to digital broadcast receiving and retransmitting device as claimed in claim 1 is characterized in that, wherein this initial frequency is the minimum value of this setpoint frequency scope among the step a.
5, the method for searching available frequency band that is applied to digital broadcast receiving and retransmitting device as claimed in claim 4 is characterized in that, wherein is to begin with this initial frequency among the step c, and according to this frequency interval as increment, continue to search.
6, the method for searching available frequency band that should be applied to digital broadcast receiving and retransmitting device as claimed in claim 1 is characterized in that, wherein this initial frequency is the maximum of this setpoint frequency scope among the step a.
7, the method for searching available frequency band that is applied to digital broadcast receiving and retransmitting device as claimed in claim 6 is characterized in that, wherein is to begin with this initial frequency among the step c, and according to this frequency interval as depreciation, continue to search.
8, a kind of digital broadcast signal is applied to the method for the automatic search available channel of radio-wave mode output, it is characterized in that it comprises:
Step a: set the frequency range of searching;
Step b: set the initial frequency of searching;
Step c: set the frequency interval of searching;
Does steps d: beginning to search have any frequency signal? if be, execution in step e; If not, execution in step g;
Step e: note down this dummy frequencies; Judge whether to continue to search? if be, execution in step g, if not, execution in step f;
Step f: set the frequency of this dummy frequencies for the emission carrier wave, and execution in step k;
Step g: judge whether to finish the search of the frequency range of this setting? if be, execution in step i, if not, execution in step h;
Step h: continue to search the frequency signal in the next channel, get back to steps d;
Step I: judged whether to search dummy frequencies? if be, execution in step j, if not, execution in step k;
Step j: in one or a plurality of dummy frequencies that searches, select a dummy frequencies wherein to be set at the frequency of this emission carrier wave;
Step k: finish.
9, a kind of wireless signal transfer method is used for one first electronic installation and is transmitted a wireless signal for second electronic device reception, it is characterized in that this method comprises:
A. search the wireless available channel of this first electronic installation and second electronic device place environment empty from this first electronic installation;
B. show this available channel that obtains through searching in this first electronic installation, the receiving channels of this second electronic device is set in this available channel for the user;
C. see through this available channel from this first electronic installation and send signal for this second electronic device reception.
10, wireless signal transfer method as claimed in claim 9 is characterized in that, wherein, this step a also comprises following minor step:
A1. set initial frequency;
A2. setpoint frequency at interval;
A3. begin and adjustment gradually from this initial frequency, search whether any frequency signal is arranged on each channel with this frequency interval;
A4. on search obtaining a channel, during no frequency signal, be this available channel with this channel setting.
11, wireless signal transfer method as claimed in claim 10, it is characterized in that, wherein, this step a also is contained in the step that frequency range is searched in the last setting of minor step a1, and this initial frequency promptly is that one of them is selected from the minimum value of this frequency range or maximum among the step a1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510078856 CN1700622A (en) | 2005-06-23 | 2005-06-23 | Method for searching available frequency band used in digital broadcast receiving and retransmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510078856 CN1700622A (en) | 2005-06-23 | 2005-06-23 | Method for searching available frequency band used in digital broadcast receiving and retransmitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1700622A true CN1700622A (en) | 2005-11-23 |
Family
ID=35476509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510078856 Pending CN1700622A (en) | 2005-06-23 | 2005-06-23 | Method for searching available frequency band used in digital broadcast receiving and retransmitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1700622A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100452661C (en) * | 2006-04-04 | 2009-01-14 | 广州矽金塔电子有限公司 | Automatic radio audio-frequency transmission method based on FM frequency-modulation technology |
| CN1889377B (en) * | 2006-06-26 | 2011-07-27 | 深圳创维－Rgb电子有限公司 | Radio blue wave transmitting device |
| CN103731163A (en) * | 2013-12-24 | 2014-04-16 | 深圳市元征科技股份有限公司 | Wireless transmitting system and achievement method of wireless transmitting system |
| CN104796167A (en) * | 2015-03-19 | 2015-07-22 | 深圳市金立通信设备有限公司 | Terminal |
| CN104811260A (en) * | 2015-03-19 | 2015-07-29 | 深圳市金立通信设备有限公司 | Broadcast listening method |
| CN107040265A (en) * | 2010-01-21 | 2017-08-11 | 高通股份有限公司 | System and method for making white space equipment and host device interface |
| CN107395302A (en) * | 2017-06-19 | 2017-11-24 | 成都上生活网络科技有限公司 | The player method of broadcast program and vehicle-mounted broadcasting playback terminal in a kind of automobile |
| CN107465975A (en) * | 2017-07-12 | 2017-12-12 | 成都驰通数码系统有限公司 | A kind of apparatus and method that tuner is controlled by vehicle-carrying music player |
| CN110176972A (en) * | 2019-04-16 | 2019-08-27 | 普联技术有限公司 | Frequency modulation broadcasting tranmitting frequency selection method, device, storage medium and mobile unit |
-
2005
- 2005-06-23 CN CN 200510078856 patent/CN1700622A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100452661C (en) * | 2006-04-04 | 2009-01-14 | 广州矽金塔电子有限公司 | Automatic radio audio-frequency transmission method based on FM frequency-modulation technology |
| CN1889377B (en) * | 2006-06-26 | 2011-07-27 | 深圳创维－Rgb电子有限公司 | Radio blue wave transmitting device |
| CN107040265A (en) * | 2010-01-21 | 2017-08-11 | 高通股份有限公司 | System and method for making white space equipment and host device interface |
| CN103731163A (en) * | 2013-12-24 | 2014-04-16 | 深圳市元征科技股份有限公司 | Wireless transmitting system and achievement method of wireless transmitting system |
| CN103731163B (en) * | 2013-12-24 | 2016-08-24 | 深圳市元征科技股份有限公司 | A kind of wireless transmitting system |
| CN104796167A (en) * | 2015-03-19 | 2015-07-22 | 深圳市金立通信设备有限公司 | Terminal |
| CN104811260A (en) * | 2015-03-19 | 2015-07-29 | 深圳市金立通信设备有限公司 | Broadcast listening method |
| CN107395302A (en) * | 2017-06-19 | 2017-11-24 | 成都上生活网络科技有限公司 | The player method of broadcast program and vehicle-mounted broadcasting playback terminal in a kind of automobile |
| CN107465975A (en) * | 2017-07-12 | 2017-12-12 | 成都驰通数码系统有限公司 | A kind of apparatus and method that tuner is controlled by vehicle-carrying music player |
| CN107465975B (en) * | 2017-07-12 | 2020-01-31 | 成都驰通数码系统有限公司 | method for controlling tuner by vehicle-mounted music player |
| CN110176972A (en) * | 2019-04-16 | 2019-08-27 | 普联技术有限公司 | Frequency modulation broadcasting tranmitting frequency selection method, device, storage medium and mobile unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1052594C (en) | Radio broadcast transmission system and radio broadcast receiver | |
| CN1697499A (en) | Apparatus and method for receiving digital multimedia broadcasting in a wireless terminal | |
| CN1780185A (en) | Method and apparatus to transmit data broadcasting content and method and apparatus to receive data broadcasting content | |
| CN1829270A (en) | Mobile terminal and method for providing user interface using received terrestrial digital broadcasting data | |
| CN1578503A (en) | Apparatus and method for processing a multimedia audio signal during a voice call | |
| CN1897653A (en) | Broadcasting transmission apparatus and transmission method for broadcasting signal thereof, and broadcasting receiving apparatus and reservation recording method thereof | |
| CN1946011A (en) | Broadcasting system and method for providing broadcasting service in a weak electric field area | |
| CN1607750A (en) | Transport stream, apparatus and method for digital multimedia broadcasting system | |
| CN1601937A (en) | Apparatus and method for servicing both wide area broadcasting and local area broadcasting and terminal for receiving the broadcast | |
| CN1832354A (en) | Automatic radio audio-frequency transmission method based on FM frequency-modulation technology | |
| CN1700622A (en) | Method for searching available frequency band used in digital broadcast receiving and retransmitting device | |
| CN101658029A (en) | Method and apparatus for transferring multimedia signals from a handheld device to a computer system for display | |
| CN1606241A (en) | Apparatus and method for transmitting an audio signal in a mobile communication terminal | |
| CN101459481A (en) | General purpose radio for amplitude modulation, frequency modulation and DRM | |
| CN1949859A (en) | Terrestrial digital broadcasting system and a method therof | |
| CN1607742A (en) | Voice and control signal transmission method in wireless microphone and transmitter therefor | |
| CN1713534A (en) | High frequency signal receiving apparatus | |
| CN100377581C (en) | Digital broadcast receiver capable of converting radio-wave mode output | |
| CN1801948A (en) | Method of providing broadcast service and broadcasting receiver therefor | |
| CN101051295A (en) | Method for broadcasting cell phone received radio station broadcast signal on computer | |
| CN1921631A (en) | Mobile communication terminal and method for reproducing digital broadcasting | |
| CN200950599Y (en) | Digital broadcast receiving apparatus and system | |
| CN1419365A (en) | Teacher's and student's earphone-microphone used in digial radio speech teaching system | |
| CN1716990A (en) | Be used between the DMB period of output, handle the mobile communication terminal and the method for communication function | |
| CN1794592A (en) | Portable terminal possessing digital audio broadcasting (DAB) receiving function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |