CN105448296A - Information distribution method and device, and information receiving method and device - Google Patents
Information distribution method and device, and information receiving method and device Download PDFInfo
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- CN105448296A CN105448296A CN201410268815.8A CN201410268815A CN105448296A CN 105448296 A CN105448296 A CN 105448296A CN 201410268815 A CN201410268815 A CN 201410268815A CN 105448296 A CN105448296 A CN 105448296A
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Abstract
The invention relates to an information distribution method and device, and an information receiving method and device. The information distribution method comprises the steps: distributing a unique mark for to-be-transmitted information; coding the mark; converting the coded mark into an audio file; mixing the audio file with a to-be-broadcast content; and broadcasting the mixed content. According to the invention, the information distribution and receiving methods based on sound coding can achieve the quick, instant and effective distribution of information, and the audience on site receives sound segments in the broadcast through clients, and visits the distributed information in real time after decoding.
Description
Technical field
The present invention generally relates to distribution of information and reception technique, specifically, relates to a kind of snap information distribution method based on acoustic coding and device and message receiving method and device.
Background technology
For the introduction of big assembly or activity, such as concert, modern drama performance scene, athletic meeting, football match etc., usually make programme or pamphlet in advance, be issued in onsite user's hand with paper-based form, its reference when watching at the scene of confession.But this mode is with high costs, not environmentally, and relevant information is all made in advance, cannot carry out revising or adding, poor real according to field condition.
Along with the development of Internet technology, there is novel distribution of information mode---in the nominal value of selling, print Quick Response Code.The user of booking visits the webpage into this activity and particular production by scanning Quick Response Code, and this webpage can provide any details relevant with work.Although this mode relative efficiency, economical environment-protective, still cannot solve the problem of transmitting real-time information fast targetedly.Such as, this mode can not only transmit the details of A to audience when items on the program A, but is pushed in face of spectators by whole link information, comformed in multi information by spectators and select voluntarily, therefore, Consumer's Experience is poor, utilization rate is not high, and the efficiency of distribution of information is low.
In addition, the mode embedding Quick Response Code can not solve the instant distribution of relevant information, such as, the audience of football match just may be missed the goal that just occurred or not see the sportsman just scored clearly, ites is desirable to have a look immediately the score excellent photo of moment and also understands the detailed introduction of the sportsman just scored.This situation is also that the mode of above-mentioned embedding Quick Response Code can't resolve.
Therefore, how effectively divide photos and sending messages to become one in real time fast at the scene of large-scale activity or rally and have problem to be solved.
Summary of the invention
In view of this, the invention provides the technology of a kind of quick distribution based on acoustic coding and the information of reception.Utilize scheme provided by the invention, information coding to be distributed is become sound clip, audio mixing enters in on-the-spot broadcasted content, by the content of Live Audio, information broadcasting is gone out, achieve and immediately effectively divide photos and sending messages fast, on-the-spot spectators receive the sound clip in broadcast by client, the information that after decoding, real time access is distributed.
Particularly, on the one hand, the invention provides a kind of information dispensing method, it comprises:
To information distribution uniquely tagged to be distributed;
Mark is encoded;
Convert the mark after coding to audio file;
Described audio file and the content that will broadcast are carried out audio mixing; And
Broadcast the content through audio mixing.
Wherein, described label table is shown as 2 byte signless integers, 8 byte signless integers or 16 byte signless integers.
Wherein, described step mark after coding being converted to audio file comprises:
Convert the mark after coding to bit stream;
Utilize frequency expansion sequence, described bit stream is carried out direct sequence spread spectrum baseband modulation;
Carry out low-pass filtering and orthogonal modulation to obtained direct sequence spread spectrum baseband modulation signal, to obtain the sound signal that centre frequency is expected frequency, wherein, described expected frequency is the frequency not affecting audiovisual experience;
Described sound signal is sampled and quantizes, to obtain digital signal; And
Write described digital signal as audio file.
On the other hand, the present invention also provides a kind of information distribution device, and it comprises:
Database, it is with mode storage mark and information to be distributed one to one;
Coding module, for encoding to described mark;
Modular converter, for converting encoded mark to audio file;
Mix module, for by described audio file and the content audio mixing that will broadcast; With
Broadcast module, for broadcasting the content through audio mixing.
Wherein, described label table is shown as 2 byte signless integers, 8 byte signless integers or 16 byte signless integers by described coding module.
Wherein, described modular converter comprises:
Bit stream forms module, for converting the mark after coding to bit stream;
Spread spectrum module, for utilizing frequency expansion sequence, carries out direct sequence spread spectrum baseband modulation by described bit stream;
Modulation module, for carrying out low-pass filtering and orthogonal modulation to obtained direct sequence spread spectrum baseband modulation signal, to obtain the sound signal that centre frequency is expected frequency, wherein, described expected frequency is the frequency not affecting audiovisual experience;
Sampling module, for sampling to described sound signal and quantizing, to obtain digital signal; And
Formatting module, for being write described digital signal as audio file.
According to a further aspect in the invention, a kind of message receiving method comprises:
Receive the voice signal of broadcast;
Decode and the centre frequency detected in voice signal is the sound signal of expected frequency, wherein, described expected frequency is the frequency not affecting audiovisual experience;
Described sound signal is reduced to mark, and described mark and the information of distributing are stored in database in mode one to one; And
According to described mark, from described database, return the information of distributing that described mark is corresponding.
Wherein, by microphones and the voice signal of taped broadcast.
On the other hand, information receiver according to the present invention comprises:
Receiving element, for receiving and the voice signal of taped broadcast;
Detecting unit, the centre frequency detected in the voice signal recorded is the sound signal of expected frequency, and wherein, described expected frequency is the frequency not affecting audiovisual experience;
Decoding unit, for being described mark by described audio file decoded back, wherein, described mark and the information of distributing with relational storage one to one in database; And
Display unit, for according to described mark, returns the information of distributing that described mark is corresponding from described database.
Wherein, described receiving element is microphone.
Adopt above scheme, distribution and the reception of information can be realized real-time, quickly and efficiently.Information to be distributed is encoded into sound clip, and audio mixing does not affect the frequency range of audiovisual experience in broadcasting at the scene, little on the impact of spectators, and information is by the approach distribution of broadcast, and in real time, fast, efficient, environmental protection, cost be low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram according to information distribution procedure of the present invention.
Fig. 2 is the schematic block diagram according to information distribution device of the present invention.
Fig. 3 is the schematic diagram according to information reception process of the present invention.
Fig. 4 is the schematic block diagram according to information receiver of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Shown in accompanying drawing and the embodiments of the present invention described with reference to the accompanying drawings be only exemplary, and the present invention is not limited to these embodiments.
It should be noted that, in order to avoid the present invention fuzzy because of unnecessary details, illustrate only in the accompanying drawings with according to the closely-related structure of the solution of the present invention and/or treatment step, and eliminate other details little with relation of the present invention.
Fundamental purpose of the present invention is that the information realizing site of activity is distributed fast.The activity that site of activity described here can have broadcast to need including, but not limited to any big assembly, concert, modern drama performance, athletic meeting, match etc. at the scene frequently.
Below, by reference to the accompanying drawings to distribute the introduction of a goal sportsman at the scene of a football match, distribution of information of the present invention and reception technique is described in detail.
Can understand, about the relevant information such as line up, sportsman's introduction of these opposing teams can find on network.Even, the excellent picture of this match also may be propagated on network rapidly.In addition, also known, at the scene of football match, there is the broadcasted content that some are prerecorded, broadcast every now and then, the points for attention, place introduction etc. of such as background music, in-situ match.
Based on above understanding, process flow diagram shown in Figure 1, describes information dispensing method according to an embodiment of the invention.In this embodiment in accordance with the invention, after this process occurs in and just scores.
As shown in Figure 1, information dispensing method comprises the steps:
S101, to the unique mark of information distribution to be distributed;
In this embodiment, information to be distributed is the web page interlinkage that the sportsman just scored introduces.Unique mark is distributed to this web page interlinkage.Conveniently to the management of the whole match information to be distributed, can according to certain rule, the such as call format of data database storing, successively distribute labels, or can the index of usage data library storage data as mark.
Such as, information to be distributed can store in a database on pattern ground as follows:
So, for this information to be distributed, call number 1 can be used as mark.
Similarly, when there being other information to be distributed, according to the requirement of data database storing and form, information to be distributed can be stored, and distribution and/or assigned tags give information to be distributed.
S102, mark to be encoded;
Exemplarily, by this label coding and/or 2 byte signless integers can be expressed as.This coded system can represent 65536 marks.Should be appreciated that, the invention is not restricted to this coded system, label coding can also be become 8 byte signless integers or 16 byte signless integers and other coded system any, as long as the mark after coding can be converted to audio file in follow-up realization.
S103, by coding after mark convert audio file to;
Exemplarily, the mark after coding can be converted to audio file in the following way:
(1) by the mark after coding, such as, 2 byte signless integers (or 8 byte signless integers or 16 byte signless integers), convert bit stream to according to from least significant bit (LSB) (LSB) to the order of highest significant position (MSB);
(2) adopt 7 rank m sequences as frequency expansion sequence, carry out direct sequence spread spectrum baseband modulation to bit stream, spreading rate is 1K chips/sec;
(3) finite impulse response (FIR) (FIR) low-pass filtering that bandwidth (-6dB) is 1.5kHz is carried out to obtained direct sequence spread spectrum baseband modulation signal, and utilize I/Q orthogonal modulation to be modulated to sound signal that centre frequency is expected frequency (such as, 19kHz);
(4) sample to obtained sound signal and quantize to obtain digital signal, sampling rate is the sampling rate of 48kHz, and quantitative rate is 16bit;
(5) digital signal so obtained is write as audio file.Such as, the audio file of WAV form.
Here, expected frequency refers to the frequency not affecting spectators' audiovisual experience, or perhaps spectators cannot perceive the frequency of sound, such as, and the frequency between 17-20kHz.
S104, described audio file and the content that will broadcast are carried out audio mixing;
After the described audio file of acquisition, itself and the content that will broadcast are carried out audio mixing.After just scoring, one section of breathtaking background music may be broadcasted at the scene, now, the audio file obtained in step 103 and the background music that will play are carried out audio mixing, mixing operation can be realized by any a audio frequency and video software for editing, such as, commercially available AdobePremiere.ProCS4 Video editing software.
It should be noted that when carrying out mixing operation, may also need to carry out amplitude adjustment to audio file, can detect in reception side.
S105, broadcast content through audio mixing.
Through the content of audio mixing, by the broadcast playback at scene out.Because audio file mixed corresponding to information to be distributed is in the frequency range not affecting spectators' audiovisual experience, so for the audience, that listens at the scene remains background music, can not be interfered.
Above information dispensing method can use by the information distribution device shown in composition graphs 2.Fig. 2 shows the schematic block diagram according to information distribution device of the present invention.
As shown in Figure 2, information distribution device 2 comprises database 201, coding module 202, modular converter 203, mix module 204 and broadcast module 205.
Database 201 stores the uniquely tagged of information to be distributed and correspondence thereof.Typically, the information stored has unique index in a database, corresponding information can be found according to index, so, using the mark of index as information to be distributed, and can need not give the independent distribute labels of every bar information to be distributed.
Coding module 202 is encoded to the mark corresponding to the information that will distribute, and such as, label table is shown as 2 byte signless integers, 8 byte signless integers or 16 byte signless integers.
Modular converter 203 converts encoded mark to audio file.Modular converter 203 specifically can comprise:
Bit stream forms module, converts 2 byte signless integers or 8 byte signless integers or 16 byte signless integers to bit stream according to from least significant bit (LSB) (LSB) to the order of highest significant position (MSB);
Spread spectrum module, adopt 7 rank m sequences as frequency expansion sequence, carry out direct sequence spread spectrum baseband modulation to bit stream, spreading rate is 1K chips/sec;
Modulation module, finite impulse response (FIR) (FIR) low-pass filtering that bandwidth (-6dB) is 1.5kHz is carried out to obtained direct sequence spread spectrum baseband modulation signal, and utilize I/Q orthogonal modulation to be modulated to sound signal that centre frequency is expected frequency (such as, 19kHz);
Adopt module, sample to obtained sound signal and quantize to obtain digital signal, sampling rate is the sampling rate of 48kHz, and quantitative rate is 16bit;
Formatting module, is write digital signal as audio file, such as, is write as the audio file of WAV form.
Here, expected frequency refers to the frequency not affecting spectators' audiovisual experience, or perhaps spectators cannot perceive the frequency of sound, such as, and the frequency between 17-20kHz.
The audio file that modular converter 203 obtains by mix module 204 and the sound that will broadcast carry out audio mixing.Audio mixing is carried out with the content that will broadcast after audio file can also be carried out amplitude adjustment by mix module 204 by a certain percentage.Mix module 204 can be any a commercially available audio frequency and video software for editing.
Broadcast module 205 plays the content after audio mixing by such as loudspeaker.
Like this, utilize the above-mentioned information dispensing method based on acoustic coding and information distribution device, using air as medium, adopt broadcast mode, can site of activity realize information quick, effectively, in real time distribute, the efficiency of distribution of information is high, and cost is low.
Below, composition graphs 3 and Fig. 4 are described in the site of activity of above-mentioned example, how to receive the information of distributing according to above-mentioned distribution of information mode.
Fig. 3 illustrates the method for reseptance process flow diagram of the information of distributing based on acoustic coding.As shown in Figure 3, the method comprises the steps:
The voice signal of S301, reception broadcast;
In this embodiment, the detailed introduction that on-the-spot spectators may wish to learn about the sportsman just scored at once is sitting in.So audience can use portable terminal, includes but not limited to, mobile phone, personal digital assistant, panel computer etc., receive and record the content that a period of time broadcasting, namely receive and record one section of voice signal.
The centre frequency existed in S302, detection voice signal is the sound signal of expected frequency;
Here, expected frequency refers to the frequency not affecting audiovisual experience, such as, and the frequency in 17kHz-20kHz frequency range.
Based on the distribution of information mode of acoustic coding, the label coding of divided photos and sending messages has been become high-frequency audio file, audio mixing in the content of broadcast, so, when receiving, by detecting the signal of high band, just can know whether there is distributed information.
S303, the audio signal decoding detected is reduced into described mark;
Such as, in the present embodiment, mark 1 can be obtained.
S304, according to described mark, search in a database and return the information corresponding to this mark.
In the present embodiment, according to mark call number in other words conj.or perhaps, the link that the sportsman corresponding to mark introduces can just be found in background data base.The further clickthrough of user, the detailed introduction can consulted about this sportsman by access internet.
Above message receiving method can use by the information receiver shown in composition graphs 4.Fig. 4 shows the schematic block diagram according to information receiver of the present invention.Information receiver described here can be installed on a client-side program in portable user terminal (including but not limited to mobile phone, panel computer, personal digital assistant).
As shown in Figure 4, information receiver comprises receiving element 401, detecting unit 402, decoding unit 403 and display unit 404.
Receiving element 401 receives and records broadcasted content, namely, one section of sound, in case of the present embodiment, audience is after seeing goal, the client-side program that mobile terminal has has downloaded and installed can be opened, so, receiving element 401 by mobile terminal microphones and record one section of sound of broadcasting.As previously described, the audio mixing audio file relevant to divided photos and sending messages in the background music of broadcast, at this moment, audience can receive related content by receiving element 401.
Detecting unit 402 can receive receiving element 401 and the voice signal recorded detects, and detects the sound signal that centre frequency is wherein expected frequency, namely detects whether to there is mixed and enter coding in broadcast.
The signal decoding detected is reduced into mark by decoding unit 403.In the present embodiment, the call number 1 of database will be decoded into.
Analyzing the voice signal received, detect and decode is a complicated signal processing, because the propagation of sound may experience the process such as multi-path jamming, decay, so detecting unit and decoding unit need to carry out corresponding relevant process, the signal received conversion could be realized to be reduced into mark.
Display unit 404 searches the information of this mark correspondence in a database according to the mark that decoding unit 403 restores, in the present embodiment, this mark correspond to the web page interlinkage that this sportsman introduces, the link found is presented on the display screen of mobile terminal by display unit 404, spectators pass through clickthrough, just can accessing Internet, accessed web page, thus the details inquiring this sportsman.
Like this, utilize above-mentioned information receiver and method, spectators at the scene can receive and read the information of distributing time interested, Info Efficiency is high, and information is equivalent to be encoded audio mixing in the frequency range not affecting audiovisual experience, little on the impact of spectators, by broadcast approach, by air borne, with low cost.
Above-described embodiment understands object of the present invention, technical scheme and beneficial effect for helping; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all; any amendment of making, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an information dispensing method, is characterized in that, the method comprises:
To information distribution uniquely tagged to be distributed;
Mark is encoded;
Convert the mark after coding to audio file;
Described audio file and the content that will broadcast are carried out audio mixing; And
Broadcast the content through audio mixing.
2. the method for claim 1, is characterized in that, described label table is shown as 2 byte signless integers, 8 byte signless integers or 16 byte signless integers.
3. method as claimed in claim 2, is characterized in that, described step mark after coding being converted to audio file comprises:
Convert the mark after coding to bit stream;
Utilize frequency expansion sequence, described bit stream is carried out direct sequence spread spectrum baseband modulation;
Carry out low-pass filtering and orthogonal modulation to obtained direct sequence spread spectrum baseband modulation signal, to obtain the sound signal that centre frequency is expected frequency, wherein, described expected frequency is the frequency not affecting audiovisual experience;
Described sound signal is sampled and quantizes, to obtain digital signal; And
Write described digital signal as audio file.
4. an information distribution device, is characterized in that, this device comprises:
Database, it is with mode storage mark and information to be distributed one to one;
Coding module, for encoding to described mark;
Modular converter, for converting encoded mark to audio file;
Mix module, for by described audio file and the content audio mixing that will broadcast; With
Broadcast module, for broadcasting the content through audio mixing.
5. device as claimed in claim 4, it is characterized in that, described label table is shown as 2 byte signless integers, 8 byte signless integers or 16 byte signless integers by described coding module.
6. device as claimed in claim 5, it is characterized in that, described modular converter comprises:
Bit stream forms module, for converting the mark after coding to bit stream;
Spread spectrum module, for utilizing frequency expansion sequence, carries out direct sequence spread spectrum baseband modulation by described bit stream;
Modulation module, for carrying out low-pass filtering and orthogonal modulation to obtained direct sequence spread spectrum baseband modulation signal, to obtain the sound signal that centre frequency is expected frequency, wherein, described expected frequency is the frequency not affecting audiovisual experience;
Sampling module, for sampling to described sound signal and quantizing, to obtain digital signal; And
Formatting module, for being write described digital signal as audio file.
7. a message receiving method, is characterized in that, the method comprises:
Receive the voice signal of broadcast;
Detect the sound signal that the centre frequency existed in voice signal is expected frequency, wherein, described expected frequency is the frequency not affecting audiovisual experience;
Described audio signal decoding is reduced to mark, and described mark and the information of distributing are stored in database in mode one to one; And
According to described mark, from described database, return the information of distributing that described mark is corresponding.
8. method as claimed in claim 7, be is characterized in that, the voice signal of being broadcasted by microphones.
9. an information receiver, is characterized in that, described device comprises:
Receiving element, for receiving and the voice signal of taped broadcast;
Detecting unit, the centre frequency detected in the voice signal recorded is the sound signal of expected frequency, and wherein, described expected frequency is the frequency not affecting audiovisual experience;
Decoding unit, for being described mark by described audio file decoded back, wherein, described mark and the information of distributing with relational storage one to one in database; And
Display unit, for according to described mark, returns the information of distributing that described mark is corresponding from described database.
10. device as claimed in claim 9, it is characterized in that, described receiving element is microphone.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268815.8A CN105448296B (en) | 2014-06-17 | 2014-06-17 | Information dispensing method and device and message receiving method and device |
| HK16110190.9A HK1223451A1 (en) | 2014-06-17 | 2016-08-26 | Information distribution method and device, and information receiving method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268815.8A CN105448296B (en) | 2014-06-17 | 2014-06-17 | Information dispensing method and device and message receiving method and device |
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| Publication Number | Publication Date |
|---|---|
| CN105448296A true CN105448296A (en) | 2016-03-30 |
| CN105448296B CN105448296B (en) | 2019-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410268815.8A Active CN105448296B (en) | 2014-06-17 | 2014-06-17 | Information dispensing method and device and message receiving method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105448296B (en) |
| HK (1) | HK1223451A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017117733A1 (en) * | 2016-01-05 | 2017-07-13 | 北京司响无限文化传媒有限公司 | Information distribution method and apparatus and information receiving method and apparatus |
| CN107453829A (en) * | 2016-05-30 | 2017-12-08 | 华为终端（东莞）有限公司 | A kind of sound radio and listen to the system of sound radio, device and method |
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| CN1432163A (en) * | 2000-04-28 | 2003-07-23 | 松下电器产业株式会社 | Information distributing system, information distributing device, voice regerator, voice information service providing method |
| CN1825949A (en) * | 2002-03-29 | 2006-08-30 | 佳能株式会社 | Information distribution device, information distribution system, and information distribution system method |
| CN201197146Y (en) * | 2008-01-30 | 2009-02-18 | 万能 | Information issuing system |
| CN103888275A (en) * | 2014-03-27 | 2014-06-25 | 北京悦迪文化传媒有限公司 | Information grouping transmission system for broadcasting network and information grouping transmission method |
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2014
- 2014-06-17 CN CN201410268815.8A patent/CN105448296B/en active Active
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2016
- 2016-08-26 HK HK16110190.9A patent/HK1223451A1/en unknown
Patent Citations (4)
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| CN1432163A (en) * | 2000-04-28 | 2003-07-23 | 松下电器产业株式会社 | Information distributing system, information distributing device, voice regerator, voice information service providing method |
| CN1825949A (en) * | 2002-03-29 | 2006-08-30 | 佳能株式会社 | Information distribution device, information distribution system, and information distribution system method |
| CN201197146Y (en) * | 2008-01-30 | 2009-02-18 | 万能 | Information issuing system |
| CN103888275A (en) * | 2014-03-27 | 2014-06-25 | 北京悦迪文化传媒有限公司 | Information grouping transmission system for broadcasting network and information grouping transmission method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017117733A1 (en) * | 2016-01-05 | 2017-07-13 | 北京司响无限文化传媒有限公司 | Information distribution method and apparatus and information receiving method and apparatus |
| CN107453829A (en) * | 2016-05-30 | 2017-12-08 | 华为终端（东莞）有限公司 | A kind of sound radio and listen to the system of sound radio, device and method |
| CN107453829B (en) * | 2016-05-30 | 2019-10-22 | 华为终端有限公司 | A kind of sound radio and listen to the system of sound radio, device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105448296B (en) | 2019-03-26 |
| HK1223451A1 (en) | 2017-07-28 |
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