CN1040600C - Radio receiver - Google Patents
Radio receiver Download PDFInfo
- Publication number
- CN1040600C CN1040600C CN 93120056 CN93120056A CN1040600C CN 1040600 C CN1040600 C CN 1040600C CN 93120056 CN93120056 CN 93120056 CN 93120056 A CN93120056 A CN 93120056A CN 1040600 C CN1040600 C CN 1040600C
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- Prior art keywords
- broadcasting station
- platform
- broadcast
- rds
- program
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- 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.)
- Expired - Lifetime
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- 230000005684 electric field Effects 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 description 21
- 238000013479 data entry Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Circuits Of Receivers In General (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
The present invention can automatically update frequencies of different broadcast stations of program networks corresponding to respective preset keys to frequencies of other broadcast stations of respective networks at the time of switching to the radio mode from another mode. When the radio mode is switched to the tape mode by a tape key of an operation part, a broadcast station other than an RDS station which receives on the radio mode is automatically switched to the RDS station higher in the reception electric field strength by a system control part of a controller and receive. When the strength of the reception electric field of the RDS station is equal to a prescribed level or lower, the preset broad-cast station of a preset key of the operation part is updated to another broadcast station of the program network based on prescribed data of another program network by a data register update part.
Description
The present invention relates to the radio receiver that a kind of information multi-broadcast is used, particularly relate to a kind of radio receiver that can upgrade the same program broadcasting station that is selected in the different program nets in the preselector in advance.
Concerning auto radio, if can in vehicle ', receive certain broadcasting station, when leaving its broadcasting listening zone, automatically change the new broadcasting station that identical broadcasts is just being carried out in choosing, and when going on the air transport information, can change to radio broadcasting by other signal sources automatically, then be very easily.Therefore, states such as Germany, Australia, Switzerland adopt ARI (automated wireless electrical information) system, in due course in broadcast traffic information, the broadcasting station of the existing reception of expression is exactly the cognizance code data of traffic information broadcasting platform and represents that the cognizance code stacked data that transport information is being broadcasted is added in the fm broadcast signal, use these cognizance code data, can listen to transport information at an easy rate.
After car leaves the broadcasting listening zone of receiving platform in long distance travel, all channel selections again at every turn.For this reason, not only require to obtain easily transport information, also require to have channel selection function in high sensitivity.Particularly narrower as the scope in its broadcast reception district of FM broadcasting of the main body of radio broadcast service, in the high Europe of the broadcast reception rate of auto radio, this requirement is more strong.So for satisfying this requirement, association is proposed with RDS (radio data system) by Europe broadcasting, and is moving towards practicability.
This RDS is a kind of be added to mode in the fm broadcast signal of various numerical datas, as information, has in the existing FM broadcasting that receives:
(1) program identification code (PI)
(2) broadcasting station name (PS)
(3) the broadcasting station frequency meter (AF) of broadcasting same program
(4) programme content cognizance code (PTY)
(5) transmit status cognizance code (DI)
(6) cognizance code of music, session (M/S) and
(7) cognizance code of traffic information broadcasting platform (TP)
(8) cognizance code (TA) of transport information in broadcast.
Above-mentioned (1)-(6) are the information about the channel selection function, and (7) and (8) are transport information.
Like this, owing to come multichannel to send the information relevant, transport information etc., can carry out unprecedented special channel selection work and transport information reception work with the FM broadcasting that is received with the RDS mode.
For example, broadcasting station frequency meter (AF table) to the broadcasting same program, program (broadcast program) cognizance code (PI code) carries out demodulation, according to these data, become specified level when following in the collection of letters electric field strength of existing receiving platform, tuning each the AF platform that is stated from the above-mentioned AF table of order, verify (being called the AF search) its collection of letters electric field strength, find the AF platform of collection of letters electric field strength maximum, whether the PI code of differentiating this AF platform is consistent with former receiving platform, as unanimity, just receive this AF platform, as inconsistent, seek second largest AF platform of collection of letters electric field strength again, can be like this from motion tracking.
And in states such as Britain, Sweden, the data that are called EON (Enhanced other Net work) transmit with the such data structure of 14A class, and it has and the program net of just broadcasting that receives relevant PI, AF, the information such as TP, TA of other program nets in addition.Thereby, owing to utilize this EON information, also can easily carry out the channel selection of the broadcasting station in other program net.
Fig. 2,3 is respectively the be added to example of the RDS data format that fm broadcast signal transmits of expression.Fig. 2 is that 2 AF (TN), the PS (TN) of 2 characters in the cubic frame in the PI (TN) in its four square frames in first square frame, the group address in second square frame, TP (TN), PTY (TN), TA (TN) etc., the third party's frame are transmitted in order to the data that are called OA class group of the transmission RDS data relevant with the program net of fm broadcast signal self.TN represents the relevant information with the program net of FM broadcasting.
Fig. 3 is in order to transmit the RDS data relevant with other the program nets different with fm broadcast signal, the data that are called as the 14A class, the PI (TN) in first square frame in its four square frames, group address in second square frame, TP (TN), PTY (TN), EP (EON), message address, the PS (EON) of 2 characters in third party's frame, 2 AF (EON), tuned frequency (TN) and with the corresponding conversion modulation frequency of this tuned frequency (EON) or conversion low frequency/IF-FRE (EON), PTY (EON) and TA (EON) ... Deng central and the corresponding information of message address, PI (EON) in the cubic frame etc. is transmitted.(EON) expression is about the data of other the program nets different with the FM signal broadcasting.Yet because the data of having used AF (EON), conversion modulation frequency (EON) or PI channel selections such as (EON) to use just can be transformed into receiving platform other desired program nets.
That is to say, the RDS that preselector is arranged in the past uses in the receiver, use above-mentioned EON information, with radio (FM reception) pattern, for example be preset to preselector 1 respectively in broadcasting station with PI difference (program net difference), 2,3 o'clock, preselector 1 is the broadcasting station of broadcasting EON, owing to obtain EON information, in a single day the data electric field strength of the broadcasting station of the preselector 1 in the reception die down, and just selects the broadcasting station of broadcasting in the same program net of just broadcasting identical content automatically, the EON information that obtains according to the broadcasting station by preselector 1 can automatically be selected and change and preselector 2 simultaneously, the frequency of the broadcasting station of each PI correspondence of 3 (conversion modulation frequency).
Fig. 4 is a conversion modulation frequency table, and it is represented as EON information is that obtain and the example of the conversion modulation frequency that different PI are corresponding.Conversion modulation frequency table according to Fig. 4 is described in detail now, for example, car is in the A district, and PI1 is predisposed to 92.0MHz (EON broadcasting station) to the frequency that will can receive in the A district in preselector 1 respectively, PI2 is predisposed to 94.0MHz in preselector 2, PI3 is predisposed to 96.0MHz in preselector 3.Therefore, while the 92.0MHz that receives preselector 1 when car by the A district when the C district is mobile, the 92.0MHz of preselector 1 receives 92.4MHz (the AF platform among Fig. 2 is again the tuned frequency among Fig. 3) by what RDS had from motion tracking.
At this with reference to Fig. 4, obtain the conversion modulation frequency in the C district corresponding with 92.4MHz after, with the corresponding conversion modulation frequency of PI2 be 94.4MHz, become 96.4MHz with the corresponding conversion modulation frequency of PI3.Thereby automatically the 94.0MHz with preselector 2 is updated to 94.4MHz, and the 96.0MHz of preselector 3 is updated to 96.4MHz.And at RDS with in the receiver, except that wireless mode,, also can upgrade preliminary election automatically even model tape for example as carries out reception work and receives the RDS platform and obtain EON information.
Yet concerning RDS usefulness radio receiver in the past, with radio (FM reception) pattern, for example that PI is different RDS platforms is chosen respectively in the preselector 1,2,3 in advance, obtain EON information, in case the collection of letters electric field strength of the RDS platform of the preselector 1 in receiving dies down, can automatically select the broadcasting station of broadcasting in the same program net of just broadcasting identical content, can upgrade with frequency (conversion modulation frequency) preliminary election automatically of the broadcasting station of each PI correspondence in preselector 2,3 simultaneously.And the broadcasting station collection of letters electric field strength beyond receiving the RDS platform is when dying down, and there is not the sensation of imbalance in conversion channel selection by hand usually.
But, when for example the broadcasting station beyond receiving RDS is converted to other patterns such as model tape, owing to be not the RDS platform, can not upgrade the preliminary election broadcasting station automatically even obtain EON information, so once more when model tape converts wireless mode to, even press preselector, the imbalance sense that can not receive identical broadcasts is arranged also.
So, the purpose of this invention is to provide a kind of radio receiver, it is when other mode switch are wireless mode, can be updated to the frequency of the other broadcasting station of each program net with the Automatic Frequency of the different broadcasting stations of the corresponding program net of each preselector.
Above-mentioned purpose of the present invention, in the radio receiver that information multi-broadcast in FM signal that the specified data relevant with the program net of this broadcasting station or other program nets is added to is used, with finishing: in order to a plurality of preselectors of preliminary election broadcasting station as the lower part; Carry out being transformed into the mode switch portion of other patterns from wireless mode; With this converter section when wireless mode is converted to other patterns, when receive the broadcasting station with wireless mode be broadcasting station beyond the information multiplex broadcasting platform, automatically be transformed into the automatic reception portion that the high information multi-broadcast platform of collection of letters electric field strength receives from this broadcasting station; Fade to specified level when following in the collection of letters electric field strength of above-mentioned information multi-broadcast platform, make the preliminary election broadcasting station of preselector be updated to the preliminary election renewal portion of the broadcasting station of other program nets according to the specified data of other program nets.
With mode switch portion when wireless mode converts other patterns to, during platform beyond the broadcasting station that receives with wireless mode is information multi-broadcast platform, automatically be transformed into the big information multi-broadcast platform of collection of letters electric field strength receives from this broadcasting station, become specified level when following in the collection of letters electric field strength of information multi-broadcast platform, according to other the specified data of program net, make the preliminary election broadcasting station of preselector be updated to the broadcasting station of other program nets.
Fig. 1 is the block diagram of relevant RDS of the present invention (radio data system) with the receiver major part.
Fig. 2 is the key diagram of an example of expression RDS data transfer format.
Fig. 3 is the key diagram of another example of expression RDS data transfer format.
Fig. 4 is the conversion modulation frequency table of an example of the expression conversion modulation frequency corresponding with each PI.
Fig. 5 is the first pass figure in order to the work of the controller in the key diagram 1 14.
Fig. 6 is second flow chart in order to the work of the controller in the key diagram 1 14.
Among the figure: 1--phase-locked loop circuit 2--fm tuner 3--intermediate frequency detector amplefier 8--RDS demodulator 9--error detects the wireless telegraph key 12b--of the correction circuit 10--signal strength meter 12--operating portion 12a--tape key 12c--preselector 14--controller 14a--memory 14b--data entry renewal 14c--of portion systems control division
Below with reference to accompanying drawings embodiments of the invention are described.
Fig. 1 is the block diagram of the RDS of relevant one embodiment of the present of invention with the major part of receiver.
The 1st, phase-locked loop (PLL) circuit is to the high-frequency tuner 2 outputs assigned voltage signal corresponding with wanting receiving platform.The broadcasting station voltage signal that fm tuner 2 receives by antenna ANT input produces the intermediate-freuqncy signal of stipulating (IF).The 3rd, the intermediate frequency detector amplefier will be amplified to specified level with the intermediate-freuqncy signal that fm tuner 2 is transformed into, and carry out detection.
The 4th, stereo demodulator (MPX) will be demodulated to stereophonic signal by the rectified signal of intermediate frequency detector amplefier input.The 5th, the switch that carries out the conversion of broadcast receiver and tape signal source, the 6th, amplifier (AMP) amplifies stereophonic signal according to the not shown volume setting that goes out, and the 7th, loud speaker drives output sound signal with amplifier 6.The 8th, the RDS demodulator is separated the RDS data (AF table, PI data etc.) that the broadcasting of calling regulation regularly transmits.The 9th, error detects correction circuit, Yi Bian make every group synchronous, Yi Bian detect the error of the RDS data that solve by RDS demodulator 8, and revise this error.
The 10th, signal strength meter by coming supervisory signal intensity (for example electric field strength) to carrying out the direct current detection by the intermediate-freuqncy signal of intermediate frequency detector amplefier 3 outputs, detects the signal strength signal intensity of receiving platform.The 11st, the display part of demonstration receive frequency etc.The 12nd, operating portion, it has in order to the wireless telegraph key 12a that is converted to wireless mode, in order to the tape key 12b that is converted to model tape and 6 preselector 12c that are numbered 1-6.The 13rd, tape broadcast portion is subjected to the control of following controller to play and temporarily stop.
The 14th, controller, the structure of detailed description controller 14 below.At first, 14a is a memory, it respectively by each program net storage, also stores the frequency of desired broadcasting station and the PI of the program net under this frequency, the data of also storing other with preselector 12c in the operating portion 12 and preselector 12c with RDS data (PI, AF, TP, TA etc.) accordingly; 14b is a data entry renewal portion, it arrives memory 14a with the RDS data entry of RDS demodulator 8 demodulation, simultaneously when the signal strength signal intensity that monitors the RDS platform receives the AF platform, obtain conversion modulation frequency, according to the corresponding frequency of the PI with preliminary election among each preselector 12c updated stored device 14a with respect to this AF platform; 14c is a systems control division, its energy:
(1) signal strength meter 10 of supervision receiving platform (RDS platform) when the collection of letters electric field strength of receiving platform dies down, makes it to carry out the AF search,
(2) response is found out the frequency of institute's preliminary election from the instruction of the preselector 12c of operating portion 12,
(3) response is from the conversion instruction control tape of wireless telegraph key 12a, the tape key 12b of operating portion 12 and the conversion of wireless mode, perhaps,
(4) when being converted to model tape by wireless mode, at first when not obtaining EON information,, receive the broadcasting station of transmitting EON information by searching work, collect EON information,
When (5) before being transformed into model tape, just receiving broadcasting station beyond the RDS platform, at first make it to receive the broadcasting station of the maximum collection of letters electric field strength in the RDS platform of institute's preliminary election, as the RDS broadcasting station not by preliminary election, just by searching the RDS platform that makes it to receive maximum signal.
Fig. 5, Fig. 6 are the flow charts in order to the work of explanation controller 14, will describe the preliminary election renewal of other patterns of the present invention according to this flow chart in detail below.
In Fig. 5, press down the wireless telegraph key 12a of operating portion 12, the systems control division 14c of controller 14 receives after the conversion instruction of wireless mode conversion (step 101), judges at first whether memory 14a obtains EON information (step 102), as just carried out step 104.
Obtain EON information as processing end, just go to step 103,, receive the EON information (step 103) of EON broadcasting station by searching work by 102 steps.Then, go to step 104, receive the broadcasting station (step 104) of preliminary election in advance in turn.So, systems control division 14c verifies whether broadcasting station and this broadcasting station of being stored in memory 14a corresponding with preselector 12c are RDS broadcasting station (step 105), be RDS platform and, just receive this broadcasting station (step 107) if any the broadcasting station (step 106) of maximum signal.By the processing of step 106, as do not have the broadcasting station of maximum signal, just begin searching work (step 108), return step 105, repeat above same processing.
At this with reference to Fig. 6, for the information strength of keeping existing receiving platform (RDS platform) is in good accepting state, monitor the signal strength signal intensity of existing receiving platform with signal strength meter 10, become (step 109) below the specified level as signal strength signal intensity, systems control division 14c obtains the AF frequency by the AF table that is stored among the memory 14a, to the frequency control signal of phase-locked loop circuit 1 output, begin each AF search (step 110) with respect to each AF platform.Receive (step 111) behind the AF platform of maximum signal, with the level of signal strength of former receiving platform relatively (step 112), as greatly then returning former receiving platform (step 113) unlike former receiving platform level of signal strength.Turn back to step 109 then, repeat same processing.
On the one hand by step 112, if the level of signal strength of the AF platform of receiving is bigger than the level of signal strength of former receiving platform, then the 14b of data entry portion of controller 14 detects the RDS data (step 114) that correction circuit 9 reads AF table, these AF platforms of PI data by RDS demodulator 8, error, systems control division 14c verifies the PI data (step 115) that are stored among the memory 14a then, inconsistent as the PI data, the AF platform (step 116) that received signal intensity is second largest, return step 112 then, repeat identical handling procedure.
As passing through step 115PI data consistent, then systems control division 14c determines to receive, and this AF platform is as existing receiving platform (step 117).Therefore, the data entry renewal 14b of portion arrives memory 14a with the RDS data entry of receiving platform, obtains, upgrades and be stored in the corresponding conversion modulation frequency (step 118) of PI among the memory 14a and broadcasting station preliminary election simultaneously.Return step 109 then, repeat identical handling procedure.
The RDS that comprises traffic information data (radio data system) that the present invention is not only applicable to Europe uses receiver, also is applicable to the radio data system receiver of the RDBS that comprises traffic information data (wireless data broadcast system) etc. of the U.S..
According to above-mentioned the present invention, with mode switch portion when wireless mode is converted to other patterns, when receive the broadcasting station with wireless mode be platform beyond the information multiplex broadcasting platform, automatically be transformed into reception receives from the big information multi-broadcast platform of electric field strength from this broadcasting station, when the collection of letters electric field strength of information multi-broadcast platform becomes the level of regulation when following, the preliminary election broadcasting station of preselector is updated to the broadcasting station of other program nets according to the specified data of other program nets, so when being wireless mode by other mode switch, even do not receive the RDS platform, also can automatically upgrade the preliminary election broadcasting station with former wireless mode.
Claims (1)
1, a kind of radio receiver, be used for the be added to information multi-broadcast of fm broadcast signal of the specified data relevant and the specified data relevant with the program net of other broadcasting station with the program net of information multi-broadcast broadcasting station, it is characterized in that it is equipped with:
The a plurality of preselectors that are used for the preliminary election broadcasting station;
Carry out from the mode switch portion of wireless mode to other mode switch;
With this converter section when wireless mode is converted to other patterns, when as former wireless mode in when to receive the broadcasting station be platform beyond the information multi-broadcast platform, the automatic reception portion that is transformed into the big information multi-broadcast platform of collection of letters electric field strength from this broadcasting station and receives automatically;
Become specified level when following in the collection of letters electric field strength of above-mentioned information multi-broadcast platform,, make the preliminary election broadcasting station of preselector be updated to the preliminary election renewal portion of the broadcasting station of other program nets according to the specified data of other program nets.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07297193A JP3279379B2 (en) | 1993-03-08 | 1993-03-08 | Radio receiver |
| JP72971/1993 | 1993-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1092225A CN1092225A (en) | 1994-09-14 |
| CN1040600C true CN1040600C (en) | 1998-11-04 |
Family
ID=13504789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93120056 Expired - Lifetime CN1040600C (en) | 1993-03-08 | 1993-12-07 | Radio receiver |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3279379B2 (en) |
| CN (1) | CN1040600C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2005006577A1 (en) * | 2003-07-14 | 2006-08-24 | ソニー株式会社 | Playback apparatus, information setting method, and information setting program |
| CN1816986B (en) * | 2003-07-14 | 2011-06-15 | 索尼株式会社 | Display, display method and display control program |
| EP1680921A4 (en) * | 2003-11-04 | 2010-04-21 | Korea Electronics Telecomm | APPARATUS AND METHOD FOR RECEIVING BROADCAST DATA TO SUPPORT CONNECTION FUNCTION WITH MOBILE NETWORKS |
| US7373123B2 (en) | 2004-02-27 | 2008-05-13 | Harman International Industries, Incorporated | Multiple tuners in a single radio receiver |
| JP4728973B2 (en) * | 2007-01-19 | 2011-07-20 | ローム株式会社 | FM transmitter, electronic device using the same, and automatic channel selection method |
| CN101489069A (en) * | 2008-12-31 | 2009-07-22 | 深圳市同洲电子股份有限公司 | Program frequency point selecting method, system and television receiving terminal |
| CN101841378B (en) * | 2009-03-19 | 2014-11-05 | 阿尔派株式会社 | Broadcasting receiver and method for presetting broadcasting frequency thereof |
| CN108449152A (en) * | 2017-02-16 | 2018-08-24 | 中兴通讯股份有限公司 | Rendering method, vehicle mounted playing apparatus, control centre and the system of information |
| KR102486107B1 (en) * | 2017-12-11 | 2023-01-09 | 현대자동차주식회사 | Radio control method and system of vehicle |
-
1993
- 1993-03-08 JP JP07297193A patent/JP3279379B2/en not_active Expired - Fee Related
- 1993-12-07 CN CN 93120056 patent/CN1040600C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06260897A (en) | 1994-09-16 |
| JP3279379B2 (en) | 2002-04-30 |
| CN1092225A (en) | 1994-09-14 |
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Expiration termination date: 20131207 Granted publication date: 19981104 |