CN102594475A - Amplitude modulation medium-wave emergency broadcasting message interpolation device and method - Google Patents
Amplitude modulation medium-wave emergency broadcasting message interpolation device and method Download PDFInfo
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- CN102594475A CN102594475A CN201110003368XA CN201110003368A CN102594475A CN 102594475 A CN102594475 A CN 102594475A CN 201110003368X A CN201110003368X A CN 201110003368XA CN 201110003368 A CN201110003368 A CN 201110003368A CN 102594475 A CN102594475 A CN 102594475A
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Abstract
The invention discloses an amplitude modulation medium-wave emergency broadcasting message interpolation device and an amplitude modulation medium-wave emergency broadcasting message interpolation method. The method comprises the steps of: keeping time delay with third preset time length for an input broadcasting program audio signal; conducting gap detection to the input program audio signal, and when a program gap or a statement gap which is longer than first preset time length is detected in a broadcasting program, generating a dual-tone multiple-frequency emergency broadcasting signal which lasts for second preset time length and broadcasting the signal according to preset frequency; and interpolating the dual-tone multiple-frequency emergency broadcasting signal in the program gap or the statement gap which is longer than the first preset time length, mixing the dual-tone multiple-frequency emergency broadcasting signal with the program audio signal with the third preset time length and outputting the signals. By interpolating the dual-tone multiple-frequency encoded emergency broadcasting signal in the program gap or the statement gap of the broadcasting program audio signal, users can receive the emergency broadcasting message in time.
Description
Technical field
The present invention relates to the broadcast communication technical field, relate in particular to a kind of insertion device and method of amplitude modulation medium wave emergent broadcasting information.
Background technology
Under some situation, need receiving terminal can receive the emergent broadcasting information that network sends immediately and present to the user, for example:
Warning information, for example: earthquake information, fire information, floods information, typhoon information etc.
User related information: like arrearage information, dunning information, stored value card successful recharging information etc.
System related information: like electronic business guide update information etc.
These information and user's interests itself are closely related, and the user more early receives good more.But user's receiving emergent broadcast program always not under normal conditions.They may listen to other broadcast program or timely start receiving emergency broadcast message not unwitting the time.
Therefore, if the receiving terminal before using, under many circumstances, the user is receiving emergent broadcast information in time, and this will cause the user can't obtain information immediately, can't make a response rapidly.
Summary of the invention
In view of above-mentioned analysis, the present invention aims to provide a kind of insertion device and method of amplitude modulation medium wave emergent broadcasting information, in order to solve the user that exists in the prior art problem of receiving emergent broadcast information in time.
The object of the invention is mainly realized through following technical scheme:
The invention provides a kind of insertion device of amplitude modulation medium wave emergent broadcasting information, comprising: program gap detecting module, delay circuit module, double-tone multi-frequency coding module and signaling are broadcast the control module composition, wherein,
Said program gap detecting module; Be used for the program audio signal of input is carried out the gap detecting; In detecting broadcast program, during greater than the gap of program gap phase of first scheduled time length or statement, control said double-tone multi-frequency coding module and produce the dual-tone multifrequency urgent broadcast signaling that continues second scheduled time length;
Said delay circuit module is used for the broadcast program audio signal of input is kept the time delay of the 3rd scheduled time length;
Said signaling is broadcast control module, is used to control said double-tone multi-frequency coding module and broadcasts dual-tone multifrequency urgent broadcast signaling by predetermined frequency;
Said double-tone multi-frequency coding module; Be used for broadcasting under the control of control module and broadcast by predetermined frequency in the dual-tone multifrequency urgent broadcast signaling that produce to continue second scheduled time length under the control of said program gap detecting module and in said signaling; In the gap of or statement interim, insert said dual-tone multifrequency urgent broadcast signaling, mix back output with the program audio signal of the 3rd scheduled time length of delaying time greater than the program gap of first scheduled time length.
Further, said device also comprises:
Error correction code module is used for the said dual-tone multifrequency urgent broadcast signaling of inserting is carried out the error correction coding protection.
The present invention also provides a kind of insertion method of amplitude modulation medium wave emergent broadcasting information, comprising:
Steps A: the time delay that the broadcast program audio signal of input is kept the 3rd scheduled time length;
Step B: the program audio signal to input carries out the gap detecting; In detecting broadcast program during, produce the dual-tone multifrequency urgent broadcast signaling that continues second scheduled time length and broadcast by predetermined frequency greater than the gap of program gap phase of first scheduled time length or statement;
Step C: in the gap of or statement interim, insert said dual-tone multifrequency urgent broadcast signaling, mix back output with the program audio signal of the 3rd scheduled time length of delaying time greater than the program gap of first scheduled time length.
Further, before inserting said dual-tone multifrequency urgent broadcast signaling, also comprise:
Said dual-tone multifrequency urgent broadcast signaling is carried out the error correction coding protection.
Wherein, said second scheduled time length is to confirm that according to the lasting time span of the touch-tone signal of CCITT regulation span is 40 milliseconds～50 milliseconds; Said first scheduled time length and the 3rd scheduled time length need be confirmed according to second scheduled time length.
Beneficial effect of the present invention is following:
The present invention makes the user can receive emergent broadcasting information timely through in the urgent broadcast signaling of in the gap of program gap phase of broadcast program audio signal or statement, inserting double-tone multi-frequency coding; Simultaneously, DTMF urgent broadcast signal is carried out optional error correcting code protection, can further improve the antijamming capability of signaling.
Other features and advantages of the present invention will be set forth in specification subsequently, and from specification, becoming of part is obvious, perhaps understands through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Fig. 1 is the structural representation of the said device of the embodiment of the invention;
The schematic flow sheet of the said method of Fig. 2 embodiment of the invention.
Embodiment
Specifically describe the preferred embodiments of the present invention below in conjunction with accompanying drawing, wherein, accompanying drawing constitutes the application's part, and is used to explain principle of the present invention with embodiments of the invention.For clear and simplification purpose, when it possibly make theme of the present invention smudgy, with specifying in detail of known function and structure in the omission device described herein.
At first, be elaborated in conjunction with 1 pair of said device of the embodiment of the invention of accompanying drawing.
As shown in Figure 1; Fig. 1 is the structural representation of the said device of the embodiment of the invention; Specifically can comprise: delay circuit module, program gap detecting module, DTMF (Double Tone Multi Frequency; Dual-tone multifrequency) coding module, error correction code module and signaling are broadcast control module, wherein
Program gap detecting module; Program audio signal to input carries out the gap detecting; In detecting broadcast program greater than the program gap phase of first scheduled time length (being set at 50 milliseconds in the embodiment of the invention) or the gap of statement; And control dtmf code module generation DTMF urgent broadcast signaling in good time, the duration is second scheduled time length (being set at 40 milliseconds in the embodiment of the invention);
The delay circuit module keeps the time delay of the 3rd scheduled time length (being set at 45 milliseconds in the embodiment of the invention) to the program audio signal of importing;
Signaling is broadcast control module, and control dtmf code module is broadcast by predetermined frequency (average 5 seconds 1 time) and continued 40 milliseconds urgent broadcast signaling;
The dtmf code module; Produce to continue 40 milliseconds DTMF urgent broadcast signaling under the control of program gap detecting module and broadcasting in signaling under the control of control module and broadcast by predetermined frequency; In the gap of or statement interim, insert said DTMF urgent broadcast signaling, mix with 45 milliseconds the program audio signal of delaying time and export greater than 50 milliseconds program gap.
Error correction code module as an optional functional module, can further be strengthened the transmission reliability of DTMF urgent broadcast signaling.
Next combine 2 pairs of said methods of the embodiment of the invention of accompanying drawing to be elaborated.
As shown in Figure 2, Fig. 2 is the schematic flow sheet of the said method of the embodiment of the invention, specifically can may further comprise the steps:
Step 201: the delay circuit module keeps 45 milliseconds time delay to the program audio signal of input;
Step 202: with step 201 simultaneously, program gap detecting module carries out the gap detecting to the program audio signal of input, when in detecting broadcast program, being not less than 50 milliseconds the gap of gap phase and statement, execution in step 203;
Step 203: program gap detecting module control dtmf code module produces DTMF urgent broadcast signaling, and the signaling duration is 40 milliseconds, broadcasts frequency and broadcasts control module by signaling and control (the signaling frequency of broadcasting can be controlled in average 5 seconds 1 time);
Step 204: in greater than the gap of 50 milliseconds program gap or statement, insert DTMF urgent broadcast signaling, 45 milliseconds program audio signal mixes with delaying time;
Step 205: the DTMF urgent broadcast signaling to inserting is carried out optional error correcting code coding protection;
Step 206: the audio signal to being inserted with DTMF urgent broadcast signaling is exported.
Need to prove; 40 milliseconds that mention in the above technical scheme is the minimum time length that continues according to the dtmf signal that CCITT (CCITT) stipulates; The embodiment of the invention not merely is limited to 40 milliseconds, generally can between 40 milliseconds～50 milliseconds, select; 45 milliseconds time delay is to come surely according to 40 milliseconds dtmf signal duration length, and 5 milliseconds of prolonging are in order to have a guardtime at interval, also not only to be confined to 5 milliseconds more; It is fixed that the gap that is not less than 50 milliseconds gap phase and statement is mainly also come according to dtmf signal duration length, and concrete length can be set according to actual needs.
In sum; The embodiment of the invention provides a kind of insertion device and method of amplitude modulation medium wave emergent broadcasting information; Through in the urgent broadcast signaling of in the gap of program gap phase of broadcast program audio signal or statement, inserting double-tone multi-frequency coding, make the user can receive emergent broadcasting information timely; Simultaneously, DTMF urgent broadcast signal is carried out optional error correcting code protection, can further improve the antijamming capability of signaling.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (6)
1. the insertion device of an amplitude modulation medium wave emergent broadcasting information is characterized in that, comprising: program gap detecting module, delay circuit module, double-tone multi-frequency coding module and signaling are broadcast the control module composition, wherein,
Said program gap detecting module; Be used for the program audio signal of input is carried out the gap detecting; In detecting broadcast program, during greater than the gap of program gap phase of first scheduled time length or statement, control said double-tone multi-frequency coding module and produce the dual-tone multifrequency urgent broadcast signaling that continues second scheduled time length;
Said delay circuit module is used for the broadcast program audio signal of input is kept the time delay of the 3rd scheduled time length;
Said signaling is broadcast control module, is used to control said double-tone multi-frequency coding module and broadcasts dual-tone multifrequency urgent broadcast signaling by predetermined frequency;
Said double-tone multi-frequency coding module; Be used for broadcasting under the control of control module and broadcast by predetermined frequency in the dual-tone multifrequency urgent broadcast signaling that produce to continue second scheduled time length under the control of said program gap detecting module and in said signaling; In the gap of or statement interim, insert said dual-tone multifrequency urgent broadcast signaling, mix back output with the program audio signal of the 3rd scheduled time length of delaying time greater than the program gap of first scheduled time length.
2. device according to claim 1 is characterized in that, said device also comprises:
Error correction code module is used for the said dual-tone multifrequency urgent broadcast signaling of inserting is carried out the error correction coding protection.
3. device according to claim 1 is characterized in that, said second scheduled time length is that the time span that touch-tone signal according to the rules continues confirms that span is 40 milliseconds～50 milliseconds; Said first scheduled time length and the 3rd scheduled time length need be confirmed according to second scheduled time length.
4. the insertion method of an amplitude modulation medium wave emergent broadcasting information is characterized in that, comprising:
Steps A: the time delay that the broadcast program audio signal of input is kept the 3rd scheduled time length;
Step B: the program audio signal to input carries out the gap detecting; In detecting broadcast program during, produce the dual-tone multifrequency urgent broadcast signaling that continues second scheduled time length and broadcast by predetermined frequency greater than the gap of program gap phase of first scheduled time length or statement;
Step C: in the gap of or statement interim, insert said dual-tone multifrequency urgent broadcast signaling, mix back output with the program audio signal of the 3rd scheduled time length of delaying time greater than the program gap of first scheduled time length.
5. method according to claim 3 is characterized in that, before inserting said dual-tone multifrequency urgent broadcast signaling, also comprises:
Said dual-tone multifrequency urgent broadcast signaling is carried out the error correction coding protection.
6. method according to claim 4 is characterized in that, said second scheduled time length is that the time span that touch-tone signal according to the rules continues confirms that span is 40 milliseconds～50 milliseconds; Said first scheduled time length and the 3rd scheduled time length need be confirmed according to second scheduled time length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110003368.XA CN102594475B (en) | 2011-01-10 | 2011-01-10 | Amplitude modulation medium-wave emergency broadcasting message interpolation device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110003368.XA CN102594475B (en) | 2011-01-10 | 2011-01-10 | Amplitude modulation medium-wave emergency broadcasting message interpolation device and method |
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| CN102594475A true CN102594475A (en) | 2012-07-18 |
| CN102594475B CN102594475B (en) | 2015-03-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116155425A (en) * | 2023-04-23 | 2023-05-23 | 成都德芯数字科技股份有限公司 | Instruction sound eliminating method and system for medium wave emergency broadcast |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192614A (en) * | 1997-03-03 | 1998-09-09 | 索尼公司 | Audio data transmission apparatus and method, audio data recording apparatus, and audio data recording medium |
| CN101651507A (en) * | 2008-08-15 | 2010-02-17 | 威盛电子(中国)有限公司 | Method and system for securely playing multimedia broadcast content and multimedia broadcast system |
| CN101702626A (en) * | 2009-11-06 | 2010-05-05 | 徐汉阳 | Cassette automatic recorder for listening behavior of frequency and amplitude modulating broadcast |
| US20100289943A1 (en) * | 2009-05-14 | 2010-11-18 | Kabushiki Kaisha Toshiba | Broadcasting receiver |
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2011
- 2011-01-10 CN CN201110003368.XA patent/CN102594475B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192614A (en) * | 1997-03-03 | 1998-09-09 | 索尼公司 | Audio data transmission apparatus and method, audio data recording apparatus, and audio data recording medium |
| CN101651507A (en) * | 2008-08-15 | 2010-02-17 | 威盛电子(中国)有限公司 | Method and system for securely playing multimedia broadcast content and multimedia broadcast system |
| US20100289943A1 (en) * | 2009-05-14 | 2010-11-18 | Kabushiki Kaisha Toshiba | Broadcasting receiver |
| CN101702626A (en) * | 2009-11-06 | 2010-05-05 | 徐汉阳 | Cassette automatic recorder for listening behavior of frequency and amplitude modulating broadcast |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116155425A (en) * | 2023-04-23 | 2023-05-23 | 成都德芯数字科技股份有限公司 | Instruction sound eliminating method and system for medium wave emergency broadcast |
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