CN103281581A - Human-computer interaction system and method controlling IP set-top box through smart phone voice - Google Patents
Human-computer interaction system and method controlling IP set-top box through smart phone voice Download PDFInfo
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Abstract
The invention discloses a human-computer interaction system and method controlling an IP set-top box through smart phone voice. The system comprises a smart terminal and the controlled IP set-top box, wherein the smart terminal and the controlled IP set-top box are connected through a communication network, the smart terminal comprises a voice acquiring module, a voice identifying module, a voice instruction screening module and a voice controlling module, and the voice identifying module is connected with a voice cloud computing platform through the Internet. According to the human-computer interaction system and method controlling the IP set-top box through the smart phone voice, voice control over the set-top box is achieved through a smart phone, operation is simple, and cost is low; voice identifying is performed through the cloud computing platform which collects a large amount of data of voice, vocabularies and the like, and the voice identifying rate is high; voice instructions are screened, the effects caused by accents, dialects, noise and the like are effectively weakened, the instruction expected by a user is hit, and accuracy of the voice control is improved; semantic identifying can be achieved through a custom voice input function, the voice expected by the user can be mapped to corresponding operation, and the accuracy of the voice control is further improved.
Description
Technical field
The present invention relates to a kind of man-machine interactive system and method by smart mobile phone voice control IP set-top box.
Background technology
For a lot of consumers, TV remote controller key is too complicated, has brought great inconvenience.Thus, be directed to consumer demand, along with continuous upgrading and the fast development of TV, TV has developed into without remote controller, only just can finish various operations such as changing platform, volume adjusting with phonetic order, seems more simple, convenient with speech TV control.
For the IP set-top box users, man-machine interaction always is a puzzlement user's problem, and traditional remote controller uses inconvenience, can't respond the action of user's expectation fast, and along with IPTV platform content is abundant day by day, this problem also highlights day by day.At present, in order to cater to the market demand, a collection of professional remote controller based on technology such as body sense, phonetic entry, qwerty keyboards has appearred also on the market, but price too expensive all, ordinary consumer is difficult to accept.
In addition, existing based on the following problem of voice-operated IP set box remote control system's ubiquity: the identification of (1) voice is based on the local voice storehouse, and dictionary is limited, and discrimination is not high; (2) voice command is not carried out screening, because influences such as accent, dialect, noises, voice-operated accuracy is lower, and recognition effect is relatively poor; (3) can only identify voice content, and can't the Intelligent Recognition semanteme, as: phonetic entry " mango platform ", can't identify user " HNTV " to be expressed according to semanteme, the Intelligent Recognition degree is not high enough, and recognition effect is undesirable.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of man-machine interactive system and method for passing through smart mobile phone voice control IP set-top box based on cloud computing platform is provided, carry out speech recognition by cloud computing platform, the data such as accent, vocabulary that can not only compile magnanimity, can also do the computing of large amount of complex, the phonetic recognization rate height; Voice command is screened, hit the instruction of user's expectation, improved the voice precise control; Can realize semantic identification by self-defined speech voice input function, the voice of user's expectation can be mapped as corresponding operation, further improve the voice precise control.
The objective of the invention is to be achieved through the following technical solutions: by the man-machine interactive system of smart mobile phone voice control IP set-top box, it comprises intelligent terminal and controlled IP set-top box, is connected by communication network between intelligent terminal and the controlled IP set-top box.
Described intelligent terminal comprises for the voice acquisition module of gathering user voice signal, be used for sound identification module that the user voice signal that voice acquisition module collects is identified, be used for the voice command that the voice command after the sound identification module identification screens is screened module, be mapped to the speech control module that respective operations is instructed for the voice that the voice command through screening carried out self-defined phonetic entry control, the user is expected;
Described sound identification module links to each other with the voice cloud computing platform by the Internet.
Further, described intelligent terminal comprises smart mobile phone.
Further, described communication network comprises local area network (LAN).
By the man-machine interaction method of smart mobile phone voice control IP set-top box, it may further comprise the steps:
S1: intelligent terminal is gathered the voice signal that is used for the controlled IP set-top box of control that the user sends;
S2: user voice signal is sent to the voice cloud computing platform by the Internet, utilizes cloud computing that voice signal is identified;
S3: the voice command after the cloud computing identification is carried out high-precision voice command screening;
S4: but the voice command through screening is carried out learning pronunciation control, obtain the control command of IP set-top box;
S5: intelligent terminal is sent to the IP set-top box with this control command, and control IP set-top box is finished the respective keys operation.
Man-machine interaction method by smart mobile phone voice control IP set-top box also comprises the step of setting up communication link between an intelligent terminal and the IP set-top box:
SS101: intelligent terminal sends the UDP message of appointment to the whole network section;
The SS102:IP set-top box receives this UDP message and returns a signal;
SS103: the IP set-top box tabulation of intelligent terminal storage inverse signal, set up Socket and connect and communicate.
Further, the step of the described voice command screening of step S3 comprises following substep:
SS201: preset instruction set on intelligent terminal;
SS202: phonetic characters string and this instruction set after cloud computing identification are mated one by one, draw the similarity of certain specified speech character string and each instruction;
SS203: find out the instruction the highest with this phonetic characters string similarity.
Further, described intelligent terminal comprises smart mobile phone.
The invention has the beneficial effects as follows:
1) utilize general smart mobile phone to realize the voice control of IP set-top box, simple to operate and system cost is lower;
2) carry out speech recognition by cloud computing platform, can not only compile the data such as accent, vocabulary of magnanimity, can also do the computing of large amount of complex, the phonetic recognization rate height;
3) voice command is screened, effectively weaken the influence of aspects such as accent, dialect, noise, hit the instruction of user's expectation, improved the voice precise control;
4) can realize semantic identification by self-defined speech voice input function, the voice of user's expectation can be mapped as corresponding operation (as: " mango platform " intelligent semantic of phonetic entry can be identified as " HNTV "), further improve the voice precise control.
Description of drawings
Fig. 1 is the man-machine interactive system structural representation of the present invention block diagram;
Fig. 2 is inventor's machine interaction method flow chart;
Fig. 3 sets up the flow chart of communication link for the present invention;
Fig. 4 is the flow chart of voice command screening of the present invention.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1, by the man-machine interactive system of smart mobile phone voice control IP set-top box, it comprises smart mobile phone and controlled IP set-top box, is connected by local area network (LAN) between smart mobile phone and the controlled IP set-top box.
Smart mobile phone comprises that for the voice acquisition module of gathering user voice signal, for the sound identification module that the user voice signal that voice acquisition module is collected is identified, sound identification module links to each other with the voice cloud computing platform by the Internet; Be used for the voice command that the voice command after the sound identification module identification screens is screened module, be mapped to the speech control module that respective operations is instructed for the voice that the voice command through screening carried out self-defined phonetic entry control, the user is expected.
Smart mobile phone uses Android system 1.5 above versions, and prepackage VoiceSearch.apk and handset remote controller .apk two software; The IP set-top box is also used the Android system, smart mobile phone and IP set-top box are in same local area network (LAN), the IP set-top box starts the back with service of form operation of finger daemon, and the function of this service is to receive the key assignments signal that smart mobile phone sends, and accordingly the IP set-top box is controlled.The IP set-top box all can be connected the Internet with smart mobile phone.
As shown in Figure 2, by the man-machine interaction method of smart mobile phone voice control IP set-top box, it may further comprise the steps:
S1: smart mobile phone is gathered the voice signal that is used for the controlled IP set-top box of control that the user sends;
S2: user voice signal is sent to the voice cloud computing platform by the Internet, utilizes cloud computing that voice signal is identified;
S3: the voice command after the cloud computing identification is carried out high-precision voice command screening;
S4: but the voice command through screening is carried out learning pronunciation control, obtain the control command of IP set-top box;
S5: smart mobile phone is sent to the IP set-top box with this control command, and control IP set-top box is finished the respective keys operation.
As shown in Figure 3, the man-machine interaction method by smart mobile phone voice control IP set-top box also comprises the step of setting up communication link between a smart mobile phone and the IP set-top box:
SS101: smart mobile phone APP sends the UDP message of appointment to the whole network section (255.255.255.255);
The SS102:IP set-top box receives this UDP message and returns a signal;
SS103: the IP set-top box tabulation of smart mobile phone storage inverse signal, set up Socket and connect and communicate.
After using the VoiceSearch.apk program to carry out the high in the clouds speech processes, obtain phonetic characters string V, phonetic characters string V there are differences with the original idea that the user wants to express because of the objective factor (as dialect, noise etc.) of each side, therefore, after utilizing cloud computing that voice signal is identified, carry out the screening of high accuracy voice command.As shown in Figure 4, the step of the described voice command screening of step S3 comprises following substep:
SS201: preset instruction set on smart mobile phone;
SS202: phonetic characters string V and this instruction set after cloud computing identification are mated one by one, draw the similarity of certain specified speech character string and each instruction;
SS203: find out the instruction the highest with this phonetic characters string similarity.
Because of language difference, directly phonetic characters string V and instruction collection is mated, still difference can appear.As: channel equates all that with the similarity of " sports channel ", " music channel ", " movie channel " phonetic order of this type is very many in the practice, and control gets up to be easy to produce error; If voice are " five-pointed star sports channel ", then its and instruction " sports channel " concentrated is exactly that similarity is the highest, and as seen: character length is more long to draw correct instruction then more easily.
In addition, because the homophone of Chinese is extremely many, as: " background feeding " and " BTV ", can mating still on the pronunciation fully, Chinese character can't mate.
Above-mentioned reason draws two key elements that improve the screening accuracy rate: (1) increases the characters matched string length; (2) the Chinese character coupling transfers the phonetic coupling to.
Therefore, before mating, earlier phonetic characters string V is changed into pinyin character string V2, " instruction set " also transferred to " phonetic instruction set ", pinyin character string V2 is mated with " phonetic instruction set ".
Instruction set comprises channel and remote controller key:
A. the remote controller key instruction is as shown in table 1:
Table 1
" presumptive instruction " corresponding one " remote controller key assignments ", the corresponding presumptive instruction of a plurality of phonetic orders is arranged, the user also can self-defined phonetic order, for example " volume+" can defined by the userly be " more loud " or " sound is too little ", and phonetic entry is that " sound is too little " or " more loud " all can analogue-key " volume+".
B. the channel instruction is as shown in table 2:
| Channel designation | Channel | Presumptive instruction | The remote controller key assignments |
| BTV | 1 | 1 | 100001 |
| Five-pointed star physical culture | 12 | 1、2 | 100001、100002 |
| ...... | ? | ? | ? |
Table 2
Channel is exactly phonetic order, if BTV then sends corresponding remote controller key assignments 100001, the IP set-top box is with analogue-key 1 at this moment, and TV programme switches to BTV; If satellite physical culture then sends remote control device thing 100001 and 100002 continuously, the IP set-top box will be simulated continuous button 1 and 2 this moment, and TV programme switches to satellite physical culture.
In the voice command screening process, the step of its matching algorithm is as follows:
Example: character string A, character string B asks AB similarity s.
The length of character string A is m, and the length of character string B is n, tries to achieve the longest common subsequence length L by the LCS algorithm, then: AB similarity s=(L*2)/(m+n).
The english abbreviation of long common subsequence is LCS(Longest Common Subsequence), its definition is: a sequence S, if be the subsequence of two or more known arrays respectively, and it is the longest to be that all meet in this condition sequence, and then S is called the longest common subsequence of known array.
The method of one of the Dynamic Programming the longest common subsequence of calculating two sequences is as follows:
Be example with two sequence X, Y:
Be provided with two-dimensional array f[i, j] length of the longest common subsequence before the j position of the expression i position of X and Y, then have:
f[1][1]=same(1,1)；
f[i,j]=max{f[i-1][j-1]+same(i,j),f[i-1,j],f[i,j-1]}；
Wherein, (a is being " 1 " when the b position of a position of X and Y is identical b), otherwise is being " 0 " same.
At this moment, f[j] in maximum number be the length of the longest common subsequence of X and Y, recall according to this array, just can find out the longest common subsequence.
The space of this algorithm, time complexity are O (n^2), and after optimizing, space complexity can be O (n).
Mate the instruction that can obtain the similarity maximum in conjunction with the bubbling algorithm one by one, match similarity and be 100% instruction and then stop coupling, and be that 100% instruction is as the similarity supreme command with this similarity.
Claims (7)
1. by the man-machine interactive system of smart mobile phone voice control IP set-top box, it is characterized in that: it comprises intelligent terminal and controlled IP set-top box, is connected by communication network between intelligent terminal and the controlled IP set-top box;
Described intelligent terminal comprises for the voice acquisition module of gathering user voice signal, be used for sound identification module that the user voice signal that voice acquisition module collects is identified, be used for the voice command that the voice command after the sound identification module identification screens is screened module, be mapped to the speech control module that respective operations is instructed for the voice that the voice command through screening carried out self-defined phonetic entry control, the user is expected;
Described sound identification module links to each other with the voice cloud computing platform by the Internet.
2. the man-machine interactive system by smart mobile phone voice control IP set-top box according to claim 1, it is characterized in that: described intelligent terminal comprises smart mobile phone.
3. the man-machine interactive system by smart mobile phone voice control IP set-top box according to claim 1, it is characterized in that: described communication network comprises local area network (LAN).
4. by the man-machine interaction method of smart mobile phone voice control IP set-top box, it is characterized in that: it may further comprise the steps:
S1: intelligent terminal is gathered the voice signal that is used for the controlled IP set-top box of control that the user sends;
S2: user voice signal is sent to the voice cloud computing platform by the Internet, utilizes cloud computing that voice signal is identified;
S3: the voice command after the cloud computing identification is carried out high-precision voice command screening;
S4: but the voice command through screening is carried out learning pronunciation control, obtain the control command of IP set-top box;
S5: intelligent terminal is sent to the IP set-top box with this control command, and control IP set-top box is finished the respective keys operation.
5. the man-machine interaction method by smart mobile phone voice control IP set-top box according to claim 4, it is characterized in that: it also comprises the step of setting up communication link between an intelligent terminal and the IP set-top box:
SS101: intelligent terminal sends the UDP message of appointment to the whole network section;
The SS102:IP set-top box receives this UDP message and returns a signal;
SS103: the IP set-top box tabulation of intelligent terminal storage inverse signal, set up Socket and connect and communicate.
6. the man-machine interaction method by smart mobile phone voice control IP set-top box according to claim 4, it is characterized in that: the step of the described voice command screening of step S3 comprises following substep:
SS201: preset instruction set on intelligent terminal;
SS202: phonetic characters string and this instruction set after cloud computing identification are mated one by one, draw the similarity of certain specified speech character string and each instruction;
SS203: find out the instruction the highest with this phonetic characters string similarity.
7. according to any described man-machine interaction method by smart mobile phone voice control IP set-top box in the claim 4～6, it is characterized in that: described intelligent terminal comprises smart mobile phone.
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| CN112770154A (en) * | 2021-01-19 | 2021-05-07 | 深圳西米通信有限公司 | Intelligent set top box with voice interaction function and interaction method thereof |
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