CN101964715B - Digital conference discussion system and digital conference communication method - Google Patents
Digital conference discussion system and digital conference communication method Download PDFInfo
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- CN101964715B CN101964715B CN2009101088377A CN200910108837A CN101964715B CN 101964715 B CN101964715 B CN 101964715B CN 2009101088377 A CN2009101088377 A CN 2009101088377A CN 200910108837 A CN200910108837 A CN 200910108837A CN 101964715 B CN101964715 B CN 101964715B
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Abstract
The invention is suitable for the technical field of digital conference system design, and provides a digital conference discussion system and a digital conference communication method. The digital conference discussion system comprises a wireless conference discussion system host and a plurality of wireless conference discussion system terminals, wherein each terminal comprises a second wireless receiving unit, a first audio signal processing unit for receiving and processing audio signals issued by conferees, and a first wireless transmission unit for sending the processed audio signals to the system host by a first wireless communication protocol; the system host comprises a plurality of first wireless receiving units for receiving the audio signals respectively by the first wireless communication protocol, a second audio signal processing unit for processing the received audio signals, and a second wireless transmission unit for sending the processed audio signals to the terminals by a second wireless communication protocol; The first wireless communication protocol is different from the second wireless communication protocol, so the signals of transmission links of the audio signals are not interfered with each other, thereby improving the wireless transmission distance of signal.
Description
Technical field
The invention belongs to the digital conference system design field, relate in particular to a kind of digital session discussing system and digital session communication means.
Background technology
Digital conference system is a kind of meeting affairs automated management system that integrates technology such as computer, communication, control automatically, multimedia, image, sound equipment; It is widely used in occasions such as commercial negotiation, product demonstration, guest are met with, government decree is assigned, and has made things convenient for interpersonal more and more frequent exchanges and communication.Hold in China along with various international conventions are increasing, the design of digital conference system is had higher requirement.
At present, digital conference system generally comprises and realizes that the participant carries out the various functional subsystems such as translating equipment of the digital radio session discussing system of topic discussion, realization simultaneous interpretation.Fig. 1 shows the basic structure of the digital radio session discussing system that prior art provides.The digital radio session discussing system comprises a plurality of wireless session discussing systems terminal that supplies the participant to use, and the audio signal and the control signal of this a plurality of wireless session discussing systems terminal transmitting-receiving are concentrated the wireless session discussing system main frame that distributes with management.
In the prior art; Transmit to the audio signal transmission of wireless session discussing system main frame and by the audio signal transmission employing identical wireless transmission protocol of wireless session discussing system main frame by wireless session discussing system terminal to wireless session discussing system terminal; Cause the signal of above-mentioned two transmission links to interfere with each other, thereby limited the distance of audio signal transmission.In addition; When this wireless session discussing system and digital translation device cooperating, when realizing multilingual simultaneous interpretation, the wireless session discussing system of this employing radio frequency transmission will take more radio frequency bandwidth resource; Be easy to occur band interference equally, and manufacturing cost is high.Have again; Because at present the meeting-place is audited the seat and is generally adopted and utilize infrared ray to carry out the simultaneous interpretation system of audio signal transmission; Therefore; Need be in the meeting of the audio signal of auditing seat transmission simultaneous interpretation, need overlap independently system for meeting provides RF digital wireless session discussing system and infrared simultaneous interpretation system two, increased system design complexity and cost.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of digital session discussing system; The digital radio session discussing system that being intended to solve prior art provides is transmitted to the audio signal transmission of wireless session discussing system main frame and by the audio signal transmission employing identical wireless transmission protocol of wireless session discussing system main frame to wireless session discussing system terminal by wireless session discussing system terminal; Cause the signal of above-mentioned two transmission links to interfere with each other, limited the problem of the distance of audio signal transmission.
The embodiment of the invention is achieved in that a kind of digital session discussing system, comprises a wireless session discussing system main frame and a plurality of wireless session discussing systems terminal, and said wireless session discussing system terminal comprises: second radio receiving unit; Receive the audio signal that the participant sends, and the audio signal that receives is carried out first audio signal processing unit of processing and amplifying, analog-to-digital conversion process, encoding process, modulation treatment; Audio signal after said first audio signal processing unit processing is sent to first wireless transmitting unit of said wireless session discussing system main frame through first wireless communication protocol;
Said wireless session discussing system main frame comprises: one or more first radio receiving units that receive the audio signal of said first wireless transmitting unit transmission respectively through first wireless communication protocol; After the audio signal that said first radio receiving unit is received is carried out demodulation process, decoding processing respectively; Multipath audio signal is carried out audio mixing handle, and with the coding audio signal processing after the audio mixing processing, second audio signal processing unit of modulation treatment; Audio signal after said second audio signal processing unit processing is sent to second wireless transmitting unit of second radio receiving unit at said wireless session discussing system terminal through second wireless communication protocol;
Second radio receiving unit at said wireless session discussing system terminal passes through second wireless communication protocol and receives the audio signal that wireless session discussing system main frame sends, with carrying out demodulation process, decoding processing, digital-to-analogue conversion processing back output in the audio signal transmission that receives to said first audio signal processing unit;
Said first wireless communication protocol is different from said second wireless communication protocol.
Another purpose of the embodiment of the invention is to provide a kind of wireless session discussing system terminal of digital session discussing system, and said wireless session discussing system terminal comprises:
Receive the audio signal that the participant sends, and the audio signal that receives is carried out first audio signal processing unit of processing and amplifying, analog-to-digital conversion process, encoding process, modulation treatment; Audio signal after said first audio signal processing unit processing is sent to first wireless transmitting unit of said wireless session discussing system main frame through first wireless communication protocol;
Receive second radio receiving unit of the audio signal of wireless session discussing system main frame transmission through second wireless communication protocol;
Said first wireless communication protocol is different from said second wireless communication protocol.
Another purpose of the embodiment of the invention is to provide a kind of wireless session discussing system main frame of digital session discussing system, and said wireless session discussing system main frame comprises:
Receive one or more first radio receiving units of the audio signal that first wireless transmitting unit at wireless session discussing system terminal sends respectively through first wireless communication protocol;
After the audio signal that said one or more first radio receiving units are received is carried out demodulation process, decoding processing respectively; Multipath audio signal is carried out audio mixing handle, and with the coding audio signal processing after the audio mixing processing, second audio signal processing unit of modulation treatment;
Audio signal after said second audio signal processing unit processing is sent to second wireless transmitting unit at wireless session discussing system terminal through second wireless communication protocol;
Said first wireless communication protocol is different from said second wireless communication protocol.
Another purpose of the embodiment of the invention is to provide a kind of digital session communication means, said method comprising the steps of:
A plurality of wireless session discussing systems terminal receives the audio signal of participant's input respectively; And after said audio signal carried out processing and amplifying, analog-to-digital conversion process, encoding process and modulation treatment in order, send to wireless session discussing system main frame through first wireless communication protocol;
Said wireless session discussing system main frame receives the multipath audio signal that send through said first wireless communication protocol at said a plurality of wireless session discussing systems terminal; And after said multipath audio signal carried out demodulation process, decoding processing, audio mixing processing, encoding process, modulation treatment in order, send to said a plurality of wireless session discussing systems terminal through second wireless communication protocol;
Said a plurality of wireless session discussing systems terminal receives the audio signal that said wireless session discussing system main frame sends respectively, and the audio signal that receives is carried out demodulation process, decoding processing, digital-to-analogue conversion processing back output;
Said first wireless communication protocol is different from said second wireless communication protocol.
In the embodiment of the invention; After relevant treatment is carried out to the audio signal of participant's input respectively in a plurality of wireless session discussing systems terminal; Send to wireless session discussing system main frame by first wireless transmitting unit through first wireless communication protocol; After the audio signal that wireless session discussing system main frame sends a plurality of wireless session discussing systems terminal is carried out relevant treatment; Send to a plurality of wireless session discussing systems terminal by second wireless transmitting unit through second wireless communication protocol; Wherein, first wireless communication protocol is different from second wireless communication protocol, makes not disturbed mutually to the audio signal transmission link of wireless session discussing system main frame and by the signal of wireless session discussing system main frame to the audio signal transmission link at wireless session discussing system terminal by wireless session discussing system terminal; Improve the wireless transmission distance of audio signal, enlarged power system capacity
Description of drawings
Fig. 1 is the basic block diagram of the digital radio session discussing system that provides of prior art;
Fig. 2 is the schematic diagram at the wireless session discussing system terminal that provides of the embodiment of the invention;
Fig. 3 is the schematic diagram of the wireless session discussing system main frame that provides of the embodiment of the invention;
Fig. 4 is the concrete structure figure of Fig. 2 of providing of first embodiment of the invention;
Fig. 5 is the concrete structure figure of Fig. 3 of providing of first embodiment of the invention;
Fig. 6 is the concrete structure figure of second radio receiving unit among Fig. 4;
Fig. 7 is the concrete structure figure of second wireless transmitting unit among Fig. 5;
Fig. 8 is the concrete structure figure of Fig. 2 of providing of second embodiment of the invention;
Fig. 9 is the concrete structure figure of Fig. 2 of providing of second embodiment of the invention;
Figure 10 is the flow chart of the digital session communication means that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention; After relevant treatment is carried out to the audio signal of participant's input respectively in a plurality of wireless session discussing systems terminal; Send to wireless session discussing system main frame by first wireless transmitting unit through first wireless communication protocol; After the audio signal that wireless session discussing system main frame sends a plurality of wireless session discussing systems terminal is carried out relevant treatment; Send to a plurality of wireless session discussing systems terminal by second wireless transmitting unit through second wireless communication protocol, wherein, first wireless communication protocol is different from second wireless communication protocol.
Fig. 2 shows the principle at the wireless session discussing system terminal that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention.
The wireless session discussing system terminal 1 that the embodiment of the invention provides comprises the audio signal that the reception participant sends; And the audio signal that receives carried out first audio signal processing unit 11 of processing and amplifying, analog-to-digital conversion process, encoding process, modulation treatment, the audio signal after first audio signal processing unit 11 is handled sends to first wireless transmitting unit 12 of wireless session discussing system main frame through first wireless communication protocol.Wherein, first wireless transmitting unit 12 is external or be built in wireless session discussing system terminal 1.
The wireless session discussing system terminal 1 that the embodiment of the invention provides also comprises second radio receiving unit 13 and the playback unit 14 that receives the audio signal of wireless session discussing system main frame transmission through second wireless communication protocol.Wherein, Second radio receiving unit 13 is external or be built in wireless session discussing system terminal 1; And send the audio signal that it receives to first audio signal processing unit 11; First audio signal processing unit 11 receives it after audio signal carries out demodulation process, decoding processing, analog-to-digital conversion process, is play by playback unit 14.
In the embodiment of the invention; First wireless communication protocol is different from second wireless communication protocol; Make and do not disturb mutually to the audio signal transmission link of wireless session discussing system main frame and by the signal of wireless session discussing system main frame to the audio signal transmission link at wireless session discussing system terminal 1 by wireless session discussing system terminal 1; Improve the wireless transmission distance of audio signal, enlarged power system capacity.Wherein, first wireless communication protocol and second wireless communication protocol can be respectively any of existing wireless communications agreement, like infrared-ray communication agreement, Bluetooth communication protocol, Wi-Fi agreement and other non-standard radio frequency protocol etc.In the embodiment of the invention; First wireless communication protocol adopts radio frequency protocol; Second wireless communication protocol adopts the infrared-ray communication agreement, certainly, and under the situation of taking into account system design complexities not; Also can be that first wireless communication protocol adopts the infrared-ray communication agreement, second wireless communication protocol adopts radio frequency protocol.
Fig. 3 shows the principle of the wireless session discussing system main frame that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention.
The wireless session discussing system main frame 2 that the embodiment of the invention provides comprises second audio signal processing unit 21; One or more first radio receiving units 22 that receive the audio signal of sending at one road wireless session discussing system terminal and send the audio signal that receives to second audio signal processing unit 21 through first wireless communication protocol respectively are (for the ease of describing; Only show one first radio receiving unit among the figure), and second wireless transmitting unit 3.Wherein, first radio receiving unit 22 and second wireless transmitting unit 3 can be external or be built in wireless session discussing system main frame 2.After second audio signal processing unit 21 carries out demodulation process, decoding processing respectively to its multipath audio signal that receives; Multipath audio signal is carried out audio mixing to be handled; And, send to wireless session discussing system terminal through second wireless communication protocol by second wireless transmitting unit 3 with after the coding audio signal processing after the audio mixing processing, the modulation treatment.
In the embodiment of the invention; First wireless communication protocol is different from second wireless communication protocol; Make and do not disturb mutually to the audio signal transmission link of wireless session discussing system main frame and by the signal of wireless session discussing system main frame to the audio signal transmission link at wireless session discussing system terminal 1 by wireless session discussing system terminal 1; Improve the wireless transmission distance of audio signal, enlarged power system capacity.Wherein, first wireless communication protocol and second wireless communication protocol can be respectively any of existing wireless communications agreement, like infrared-ray communication agreement, Bluetooth communication protocol, Wi-Fi agreement and other non-standard radio frequency protocol etc.In the embodiment of the invention; First wireless communication protocol adopts radio frequency protocol; Second wireless communication protocol adopts the infrared-ray communication agreement, certainly, and under the situation of taking into account system design complexities not; Also can be that first wireless communication protocol adopts the infrared-ray communication agreement, second wireless communication protocol adopts radio frequency protocol.
The operation principle of the digital radio session discussing system that the embodiment of the invention provides is described below in conjunction with Fig. 2 and Fig. 3.
At wireless session discussing system terminal 1; First audio signal processing unit 11 receives the audio signal that the participant sends; And after carrying out processing and amplifying, analog-to-digital conversion process, encoding process, modulation treatment; Adopt first wireless communication protocol by first wireless transmitting unit 12, send to wireless session discussing system main frame 2.
In wireless session discussing system main frame 2; First radio receiving unit 22 receives the audio signal that first wireless transmitting unit 12 is sent; And the audio signal that receives carried out after demodulation process, decoding processing, audio mixing handle; Carry out encoding process, modulation treatment, afterwards, adopt second wireless communication protocol to send to wireless session by second wireless transmitting unit 3 terminal 1 is discussed.
In wireless session discussing system terminal 1, second radio receiving unit 13 receives the audio signal that second wireless transmitting unit 3 is sent, and after the audio signal that receives carried out demodulation process, decoding processing, analog-to-digital conversion process, is play by playback unit 14.
The digital radio session discussing system that provides when the embodiment of the invention further comprises when the public address system of the meeting-place of seat, meeting-place broadcast; In the wireless session discussing system main frame that the embodiment of the invention provides; Second audio signal processing unit 21 is handled laggard line number mould conversion process audio signal being carried out audio mixing, and the audio signal after the digital-to-analogue conversion is broadcast to the seat, meeting-place through a public address system.
When the digital radio session discussing system that provides when the embodiment of the invention further comprises translating equipment; In the wireless session discussing system main frame that the embodiment of the invention provides; After the simultaneous interpretation signal that second audio signal processing unit 21 is exported translating equipment carries out analog-to-digital conversion process; Carry out sending to wireless session discussing system terminal by second wireless transmitting unit 3 through second wireless communication protocol after audio signal after audio mixing is handled together carries out encoding process, modulation treatment and filter amplifying processing together with second audio signal processing unit 21.Because present simultaneous interpretation system generally adopts the infrared-ray communication agreement to carry out audio signal transmission; When second radio receiving unit 13 adopts the infrared-ray communication agreement; Can realize the transmission of simultaneous interpretation signal through second radio receiving unit 13; And avoided existing configuration RF digital wireless session discussing system and the infrared simultaneous interpretation system two of needing to overlap independently system, cause the problem that system design is complicated, cost is high.
In addition, in order to limit participant's number of speech, satisfy system's needs to greatest extent, in the embodiment of the invention, wireless session discussing system terminal 1 also further includes first identification control unit 15; Wireless session discussing system main frame 2 also further includes second identification control unit 23.When the participant makes a speech; The speaking request signal that the participant that first identification control unit, 15 identifications, first audio signal processing unit 11 receives sends; And after this speaking request signal carried out encoding process, modulation treatment, send to wireless session discussing system main frame 2 through first wireless transmitting unit 12.First radio receiving unit 22 in the wireless session discussing system main frame 2 receives the speaking request signal that first wireless transmitting unit 12 is sent, and the speaking request signal that receives is sent to second audio signal processing unit 21.After 21 pairs of these speaking request signals of second audio signal processing unit carry out demodulation process, decoding processing, send to second identification control unit 23.Second identification control unit 23 is according to this speaking request signal; Judge whether to accept corresponding participant's speaking request; And transmit control signal to second audio signal processing unit 21 according to judged result; After carrying out encoding process, modulation treatment by 21 pairs of these control signals of second audio signal processing unit, send to wireless session discussing system terminal 1.Wireless session discussing system terminal 1 receives the control signal that wireless session discussing system main frame 2 sends; And send it to first audio signal processing unit 11; After carrying out demodulation process, decoding processing by 11 pairs of these control signals of first audio signal processing unit, send to first identification control unit 15.First identification control unit 15 is according to its control signal that receives, and whether control accepts corresponding participant's speaking request.Wherein, Second identification control unit 23 is the speaking request that judge whether to accept this participant according to preset maximum speech number information; Also can be to utilize situation to carry out resource distribution, and judge whether to accept this participant's speaking request according to the resource distribution result according to the communication channel resources of system.In addition; After 21 pairs of these control signals of second audio signal processing unit are carried out demodulation process, decoding processing; Can pass through second wireless communication protocol; Send this control signal to wireless session discussing system terminal 1, also can send this control signal to wireless session discussing system terminal 1 through the 3rd wireless communication protocol.The 3rd wireless communication protocol can adopt existing any wireless communication protocol.
Certainly; When concrete the realization; First identification control unit 15 also can not send the speaking request signal to wireless session discussing system main frame 2, and directly utilizes situation to carry out resource distribution according to the communication channel resources of system by second identification control unit 23, and determines whether to accept corresponding participant's speaking request according to the resource distribution result; Perhaps whether accept corresponding participant's speaking request according to preestablishing the information decision; And send control signal and give the secondth audio signal processing unit 21, its concrete controlled step repeats no more at this as stated.
Fig. 4 shows the concrete structure of Fig. 2 that first embodiment of the invention provides, for the ease of explanation, only shows the part relevant with the embodiment of the invention.
The wireless session discussing system terminal 1 that the embodiment of the invention provides specifically comprises the voice receiver module 111 that receives the audio signal that the participant sends, its output connect in order to audio signal carry out the voice pretreatment module 112 of processing and amplifying and analog-to-digital conversion process, first coding module 113 that the coding audio signal after processing and amplifying and the analog-to-digital conversion process is handled, first wireless transmitting unit 12 that the audio signal after the encoding process is carried out first modulation module 114 of modulation treatment and the audio signal after the modulation treatment sent to wireless session discussing system main frame through first wireless communication protocol.Wherein, first wireless transmitting unit 12 is external or be built in wireless session discussing system terminal 1.
The wireless session discussing system terminal 1 that the embodiment of the invention provides also specifically comprises second radio receiving unit 13 that receives the audio signal of wireless session discussing system main frame transmission through second wireless communication protocol; It is external or be built in wireless session discussing system terminal 1, and its output connect in order to its receive audio signal carry out demodulation process first demodulation module 115, to the audio signal after the demodulation process carry out first decoder module 116 of decoding processing, the playback unit 14 of audio signal after the audio signal after the decoding processing is carried out the D/A converter module 117 that digital-to-analogue conversion handles and play digital-to-analogue conversion.
Fig. 5 shows the concrete structure of Fig. 3 that first embodiment of the invention provides, for the ease of explanation, only shows the part relevant with the embodiment of the invention.
The wireless session discussing system main frame 2 that the embodiment of the invention provides comprises first radio receiving unit 22 that receives the audio signal of sending at a wireless session discussing system terminal; It is external or be built in wireless session discussing system main frame 2, and its output connect in order to its audio signal that receives carry out demodulation process second demodulation module 211, to the audio signal after the demodulation process carry out decoding processing second decoder module 212, with the multipath audio signal after the decoding processing carry out audio mixing module 213 that audio mixing handles, coding audio signal after audio mixing is handled is handled second coding module 214, second wireless transmitting unit 3 that the audio signal after the encoding process is carried out second modulation module 215 of modulation treatment, the audio signal after the modulation treatment is carried out the filtering amplification module 216 of filter amplifying processing and the audio signal after the filter amplifying processing sent to wireless session discussing system terminal through second wireless communication protocol.During concrete the realization; This wireless session discussing system main frame 2 also can not comprise filtering amplification module 216; Second wireless transmitting unit 3 directly sends to wireless session discussing system terminal with the audio signal after second modulation module, 215 modulation treatment, and second wireless transmitting unit 3 can be internal or external at wireless session discussing system main frame 2.
The digital radio session discussing system that provides when the embodiment of the invention further comprises when the public address system of the meeting-place of seat, meeting-place broadcast; In the wireless session discussing system main frame 3 that the embodiment of the invention provides; Audio mixing module 213 is through the input of the D/A converter module 217 connection meeting-place public address systems in the wireless session discussing system main frame; After audio signal after D/A converter module 217 is handled audio mixing module 213 audio mixings is carried out the digital-to-analogue conversion processing, broadcast to the seat, meeting-place through the meeting-place public address system.
When the digital radio session discussing system that provides when the embodiment of the invention further comprises translating equipment; In the wireless session discussing system main frame 2 that the embodiment of the invention provides; The input of second coding module 214 connects the output of translating equipment simultaneously through analog-to-digital conversion module 218; Analog-to-digital conversion module 218 carries out analog-to-digital conversion process with the simultaneous interpretation signal of translating equipment output, and second coding module 214 will together carry out encoding process through the audio signal after the simultaneous interpretation signal after the analog-to-digital conversion process is handled together with audio mixing.Because present simultaneous interpretation system generally adopts the infrared-ray communication agreement to carry out audio signal transmission; When second radio receiving unit 13 adopts the infrared-ray communication agreement; Can realize the transmission of simultaneous interpretation signal through second radio receiving unit 13; And avoided existing configuration RF digital wireless session discussing system and the infrared simultaneous interpretation system two of needing to overlap independently system, cause the problem that system design is complicated, cost is high.
The operation principle of the digital radio session discussing system that first embodiment of the invention provides is described below in conjunction with Fig. 4 and Fig. 5.
At wireless session discussing system terminal 1; Voice receiver module 111 receives the audio signal that participants send, carry out processing and amplifying and analog-to-digital conversion process via voice pretreatment module 112 after, carry out encoding process by first coding module 113; Carry out modulation treatment by first modulation module 114; Afterwards, mutual through first wireless transmitting unit 12 and first radio receiving unit 22 sends to wireless session discussing system main frame 2 with the audio signal after the modulation treatment.
In wireless session discussing system main frame 2, first radio receiving unit 22 receives the audio signal that first wireless transmitting unit 12 is sent, and after carrying out demodulation process by second demodulation module 211; Carry out decoding processing by second decoder module 212, audio mixing module 213 receives the audio signal behind the multipath decoding, and after carrying out the audio mixing processing; Encode by second coding module 214 in order; Modulate by second modulation module 215, carry out filter amplifying processing by filtering amplification module 216, afterwards; Mutual through second wireless transmitting unit 3 and second radio receiving unit 13 sends to wireless session discussing system terminal 1 with the audio signal after the filter amplifying processing.
In wireless session discussing system terminal 1; Second radio receiving unit 13 receives the audio signal that second wireless transmitting unit 3 is sent; And carry out demodulation process by first demodulation module 115 in order; Carry out decoding processing by first decoder module 116, carry out analog-to-digital conversion process by AD conversion unit 110 after, play by playback unit 14.
In addition; In order to limit participant's number of speech; Satisfy system's needs to greatest extent, in the embodiment of the invention, wireless session discussing system terminal 1 also further includes first identification control unit 15; Its two control input ends connect the output of first decoder module 116 and the request transmitting terminal of voice receiver module 111 respectively, and two control output ends of first identification control unit 15 connect the input of first coding module 113 and the request receiving terminal of voice receiver module 111 respectively; Wireless session discussing system main frame 2 also further includes second identification control unit 23, and its control input end connects the output of second decoder module 212, and the output of second identification control unit 23 connects the input of second coding module 214.When the participant need make a speech through voice receiver module 111; The participant sends the speaking request signal through voice receiver module 111 to first identification control unit 15; First identification control unit 15 receives this speaking request signal; And with this this speaking request signal through first coding module, 113 encoding process, and after first modulation module, 114 modulation treatment, send to wireless session discussing system main frame 2 through first wireless transmitting unit 12; First radio receiving unit 22 in the wireless session discussing system main frame 2 receives the speaking request signal that first wireless transmitting unit 12 is sent; And send it to second identification control unit 23; Second identification control unit 23 judges whether to accept corresponding participant's speaking request according to this speaking request signal, and transmits control signal to second coding module 214 according to judged result; After 214 pairs of these control signals of second coding module are carried out encoding process; Carry out modulation treatment by second modulation module 215, and after carrying out filter amplifying processing by filtering amplification module 216, send to wireless session discussing system terminal 1 through second wireless transmitting unit 3; Wireless session discussing system terminal 1 receives the control signal that second wireless transmitting unit 3 is sent through second radio receiving unit 13; And warp first demodulation module 115 carries out demodulation process; After first decoder module 116 carries out decoding processing, send to first identification control unit 15; First identification control unit 15 is according to its control signal that receives, and whether the work of control voice receiver module 111.
When directly utilizing situation to carry out resource distribution according to the communication channel resources of system by second identification control unit 23; And the work that determines voice receiver module 111 according to the resource distribution result whether; Perhaps according to the work that preestablishes information decision voice receiver module 111 whether the time; Second identification control unit 23 sends control signal and gives second coding module 214, and its concrete controlled step repeats no more at this as stated.
In the embodiment of the invention; When second wireless transmitting unit 3 and second radio receiving unit, 13 employing infrared-ray communication agreements; Show the concrete structure figure of second radio receiving unit 13 among Fig. 4 like Fig. 6; Fig. 7 shows the concrete structure figure of second wireless transmitting unit 3 among Fig. 5, for the ease of explanation, only shows the part relevant with the embodiment of the invention.
As shown in Figure 6; Second radio receiving unit 13 comprises that specifically receiving second wireless transmitting unit 3 carries out the amplification module 132 of processing and amplifying and the filtration module 131 that the signal after amplification module 132 processing and amplifying is carried out filtering through the infrared ray receiver module 133 of the signal of infrared-ray communication agreement transmission, the signal that infrared ray receiver module 133 is received, and the output of filtration module 131 connects first demodulation module 115.During concrete the realization, also can under the prerequisite of not stressing the signal processing effect, save filtration module 131 and/or amplification module 132, and the output of infrared ray receiver module 133 is directly connected first demodulation module 115.
As shown in Figure 7, second wireless transmitting unit 3 specifically comprises the infrared module 33 that the signal after the modulation of first modulation module 114 is carried out the filtration module 31 of Filtering Processing, the signal after filtration module 31 Filtering Processing is carried out the amplification module 32 of processing and amplifying and the signal after amplification module 32 processing and amplifying sent to second radio receiving unit 13 through the infrared-ray communication agreement.
Fig. 8 shows the concrete structure of Fig. 2 that second embodiment of the invention provides, for the ease of explanation, only shows the part relevant with the embodiment of the invention.
With shown in Figure 4 different; In the embodiment of the invention; A control input end of first identification control unit 15 does not link to each other with first decoder module 116; But connect the output of the 3rd decoder module 119, and the input of the 3rd decoder module 119 connects the output of the 3rd demodulation module 118, and the input of the 3rd demodulation module 118 connects the output of the 3rd radio receiving unit 16.Wherein, Existing any wireless communication protocol realization of the 3rd radio receiving unit 16 employings is communicated by letter with wireless session discussing system main frame 2; Remaining composition and function are same as shown in Figure 4 in the wireless session discussing system terminal 1, specifically describe as stated, repeat no more at this.
Fig. 9 shows the concrete structure of Fig. 2 that second embodiment of the invention provides, for the ease of explanation, only shows the part relevant with the embodiment of the invention.
With shown in Figure 5 different; In the embodiment of the invention; The output of second identification control unit 23 does not link to each other with second coding module 214; But connect the input of the 3rd coding module 220, and the output of the 3rd coding module 220 connects the input of the 3rd modulation module 219, and the output of the 3rd modulation module 219 connects the input of the 3rd wireless transmitting unit 24.Wherein, Existing any wireless communication protocol realization of the 3rd wireless transmitting unit 24 employings is communicated by letter with wireless session discussing system terminal 1; Remaining composition and function are same as shown in Figure 4 in the wireless session discussing system main frame 2, specifically describe as stated, repeat no more at this.
Different with the digital radio session discussing system that first embodiment of the invention provides; In the digital radio session discussing system that second embodiment of the invention provides; The control signal that second identification control unit 23 in the wireless session discussing system main frame 2 sends is carried out encoding process through the 3rd coding module 220; After the 3rd modulation module 219 carries out modulation treatment, send to wireless session discussing system terminal 1 through the 3rd wireless transmitting unit 24; The 3rd radio receiving unit 16 in the wireless session discussing system terminal 1 receives the control signal that the 3rd wireless transmitting unit 24 is sent; And warp the 3rd demodulation module 118 carries out demodulation process; After the 3rd decoder module 119 carries out decoding processing, send to first identification control unit 15.
Wherein, It is mutual that the 3rd wireless transmitting unit 24 and the 3rd radio receiving unit 16 can adopt existing any wireless communication protocol to realize; In order to make full use of the existing interface resource that is applied to control chip in the digital conference system; In the embodiment of the invention, it is mutual that the 3rd wireless transmitting unit 24 and the 3rd radio receiving unit 16 adopt radio frequency protocol to realize.At this moment; If second radio receiving unit 13 and second wireless transmitting unit 3 also adopt radio frequency protocol; Then between wireless session discussing system terminal 1 and wireless session discussing system main frame 2, still there are two radio frequency communication links; Yet,, carry multiple signals respectively compared to previous two-way radiofrequency signal because the 3rd wireless transmitting unit 24 and the 3rd radio receiving unit 16 mainly are to be used to transmit one tunnel control signal; Signal link is attend institute's data carried by data amount and is greatly reduced, and can't cause interference to transmission of audio signals.
Figure 10 shows the flow process of the digital session communication means that the embodiment of the invention provides.
In step S101; A plurality of wireless session discussing systems terminal receives the audio signal of participant's input respectively; And after this audio signal carried out processing and amplifying, analog-to-digital conversion process, encoding process and modulation treatment in order, send to wireless session discussing system main frame through first wireless communication protocol.
In step S102; Wireless session discussing system main frame receives the multipath audio signal that send through first wireless communication protocol at a plurality of wireless session discussing systems terminal; And after multipath audio signal carried out audio mixing processing, encoding process, modulation treatment in order, send to a plurality of wireless session discussing systems terminal through second wireless communication protocol.
Wherein, First wireless communication protocol and second wireless communication protocol can adopt existing any wireless communication protocol; Like infrared-ray communication agreement, Bluetooth communication protocol, Wi-Fi agreement and other non-standard radio frequency protocol etc., and first wireless communication protocol is different from second wireless communication protocol.In the embodiment of the invention, first wireless communication protocol adopts radio frequency protocol, and second wireless communication protocol adopts the infrared-ray communication agreement.Because the embodiment of the invention has adopted different communication protocol to realize the audio signal transmission of wireless session discussing system terminal and wireless session discussing system main frame; Make and do not disturb mutually to the audio signal transmission link of wireless session discussing system main frame and by the signal of wireless session discussing system main frame to the audio signal transmission link at wireless session discussing system terminal by wireless session discussing system terminal; Improve the wireless transmission distance of audio signal, enlarged power system capacity.
In addition; In order to limit participant's number of speech, satisfy system's needs to greatest extent, in the embodiment of the invention; Before step S101; Also further may further comprise the steps: wireless session discussing system terminal receives and identifies the speaking request signal that the participant sends, and after this speaking request signal passed through encoding process, modulation treatment in order, sends the speaking request signal through first wireless communication protocol to wireless session discussing system main frame; Wireless session discussing system main frame receives this speaking request signal; And judge whether to accept corresponding participant's speaking request according to this speaking request signal; Send control signal according to judged result; And after this control signal passed through encoding process, modulation treatment in order, send to corresponding wireless session discussing system terminal through second wireless communication protocol; Corresponding wireless session discussing system terminal receives this control signal, and the speech that the participant is accepted at control wireless session discussing system terminal whether.Wherein, Wireless session discussing system main frame is the speaking request that judges whether to accept this participant according to preset maximum speech number information; Also can be to utilize situation to carry out resource distribution, and judge whether to accept this participant's speaking request according to the resource distribution result according to wireless session discussing system main frame and a plurality of wireless session discussing system communication between terminals channel resource.
During concrete the realization; Before step S101; Can further include following steps: wireless session discussing system terminal receives and identifies the speaking request signal that the participant sends; And after this speaking request signal passed through encoding process, modulation treatment in order, send the speaking request signal to wireless session discussing system main frame through first wireless communication protocol; Wireless session discussing system main frame receives this speaking request signal; And judge whether to accept corresponding participant's speaking request according to this speaking request signal; Send control signal according to judged result; And after this control signal passed through encoding process, modulation treatment in order, send to corresponding wireless session discussing system terminal through the 3rd wireless communication protocol; Corresponding wireless session discussing system terminal receives this control signal, and the speech that the participant is accepted at control wireless session discussing system terminal whether.Wherein, the 3rd wireless communication protocol can adopt existing any wireless communication protocol, and in the embodiment of the invention, the 3rd wireless communication protocol adopts radio frequency protocol.
In the embodiment of the invention; After relevant treatment is carried out to the audio signal of participant's input respectively in a plurality of wireless session discussing systems terminal; Send to wireless session discussing system main frame by first wireless transmitting unit through first wireless communication protocol; After the audio signal that wireless session discussing system main frame sends a plurality of wireless session discussing systems terminal is carried out relevant treatment; Send to a plurality of wireless session discussing systems terminal by second wireless transmitting unit through second wireless communication protocol; Wherein, first wireless communication protocol is different from second wireless communication protocol, makes not disturbed mutually to the audio signal transmission link of wireless session discussing system main frame and by the signal of wireless session discussing system main frame to the audio signal transmission link at wireless session discussing system terminal by wireless session discussing system terminal; Improve the wireless transmission distance of audio signal, enlarged power system capacity; Have again; When the digital radio session discussing system further comprises translating equipment; Because present simultaneous interpretation system generally adopts the infrared-ray communication agreement to carry out audio signal transmission; When second radio receiving unit adopts the infrared-ray communication agreement; Can realize the transmission of simultaneous interpretation signal through second radio receiving unit, and avoid existing configuration RF digital wireless session discussing system and the infrared simultaneous interpretation system two of needing to overlap independently system, cause the problem that system design is complicated, cost is high.Have again; When the digital radio session discussing system further comprises translating equipment,, can save more radio frequency bandwidth resource if second radio receiving unit and second wireless transmitting unit adopt the infrared-ray communication agreement; Avoid occurring band interference, reduce manufacturing cost.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a digital session discussing system comprises a wireless session discussing system main frame and a plurality of wireless session discussing systems terminal, it is characterized in that said wireless session discussing system terminal comprises: second radio receiving unit; Receive the audio signal that the participant sends, and the audio signal that receives is carried out first audio signal processing unit of processing and amplifying, analog-to-digital conversion process, encoding process, modulation treatment; Audio signal after said first audio signal processing unit processing is sent to first wireless transmitting unit of said wireless session discussing system main frame through first wireless communication protocol;
Said wireless session discussing system main frame comprises: one or more first radio receiving units that receive the audio signal of said first wireless transmitting unit transmission respectively through first wireless communication protocol; After the audio signal that said first radio receiving unit is received is carried out demodulation process, decoding processing respectively; Multipath audio signal is carried out audio mixing handle, and with the coding audio signal processing after the audio mixing processing, second audio signal processing unit of modulation treatment; Audio signal after said second audio signal processing unit processing is sent to second wireless transmitting unit of second radio receiving unit at said wireless session discussing system terminal through second wireless communication protocol;
Second radio receiving unit at said wireless session discussing system terminal passes through second wireless communication protocol and receives the audio signal that wireless session discussing system main frame sends, with carrying out demodulation process, decoding processing, digital-to-analogue conversion processing back output in the audio signal transmission that receives to said first audio signal processing unit;
Said first wireless communication protocol is different from said second wireless communication protocol.
2. digital session discussing system as claimed in claim 1; It is characterized in that; Said first audio signal processing unit specifically comprises: the voice receiving unit of the audio signal that the reception participant sends; Its output connects in order said audio signal is carried out the voice pretreatment unit of processing and amplifying and analog-to-digital conversion process, first coding unit that the coding audio signal after processing and amplifying and the analog-to-digital conversion process is handled, the audio signal after the encoding process carried out first modulating unit of modulation treatment, and the audio signal of said first wireless transmitting unit after with the said first modulating unit modulation treatment sends to said wireless session discussing system main frame through first wireless communication protocol;
The output of said first radio receiving unit connect in order to said first radio receiving unit receive audio signal carry out second demodulating unit of demodulation process, to the audio signal after the demodulation process carry out second decoding unit of decoding processing, with the multipath audio signal after the decoding processing carries out audio mixing unit that audio mixing handles, coding audio signal after audio mixing is handled is handled second coding unit, the audio signal after the encoding process is carried out second modulating unit of modulation treatment, said second wireless transmitting unit sends to said second radio receiving unit through the audio signal of second wireless communication protocol after with the said second modulating unit modulation treatment;
Said first audio signal processing unit also comprises: the audio signal that said second radio receiving unit is received is carried out first demodulation module of demodulation process; Audio signal after the said first demodulation module demodulation process is carried out first decoder module of decoding processing; Audio signal after the said first decoder module decoding processing is carried out the D/A converter module that digital-to-analogue conversion is handled;
Said wireless session discussing system terminal also comprises:
Play the playback unit of the audio signal after said D/A conversion unit is changed.
3. digital session discussing system as claimed in claim 1 is characterized in that, said wireless session discussing system terminal also includes first identification control unit, and said wireless session discussing system main frame also includes second identification control unit;
Said first identification control unit is discerned the speaking request signal that participant that said first audio signal processing unit receives sends; And after this speaking request signal carried out encoding process, modulation treatment; Send to said first radio receiving unit through said first wireless transmitting unit; Said first radio receiving unit sends to said second audio signal processing unit with its speaking request signal that receives; Said second audio signal processing unit sends to said second identification control unit after its speaking request signal that receives is carried out demodulation process, decoding processing;
Said second identification control unit is according to said speaking request signal; Judge whether to accept corresponding participant's speaking request; And transmit control signal to said second audio signal processing unit according to judged result; After by said second audio signal processing unit said control signal being carried out encoding process, modulation treatment, send to said wireless session discussing system terminal, said wireless session discussing system terminal sends its control signal that receives to said first audio signal processing unit; After by said first audio signal processing unit its control signal that receives being carried out demodulation process, decoding processing, send to said first identification control unit;
Said first identification control unit is according to its control signal that receives, and whether control accepts corresponding participant's speaking request.
4. digital session discussing system as claimed in claim 3; It is characterized in that; Said wireless session discussing system main frame also comprises the 3rd wireless transmitting unit; Said wireless session discussing system terminal also comprises the 3rd radio receiving unit, after said second audio signal processing unit carries out encoding process, modulation treatment to said control signal, adopts the 3rd wireless communication protocol to send to said the 3rd radio receiving unit by said the 3rd wireless transmitting unit.
5. like each described digital session discussing system of claim 1 to 4, it is characterized in that said first wireless communication protocol adopts radio frequency protocol, said second wireless communication protocol adopts the infrared-ray communication agreement.
6. the wireless session discussing system terminal of a digital session discussing system is characterized in that, said wireless session discussing system terminal comprises:
Receive the audio signal that the participant sends, and the audio signal that receives is carried out first audio signal processing unit of processing and amplifying, analog-to-digital conversion process, encoding process, modulation treatment; Audio signal after said first audio signal processing unit processing is sent to first wireless transmitting unit of wireless session discussing system main frame through first wireless communication protocol;
Receive second radio receiving unit of the audio signal that wireless session discussing system main frame sends through second wireless communication protocol, said second radio receiving unit is handled back output with carrying out demodulation process, decoding processing, digital-to-analogue conversion in the audio signal transmission that receives to said first audio signal processing unit;
Said first wireless communication protocol is different from said second wireless communication protocol.
7. the wireless session discussing system terminal of digital session discussing system as claimed in claim 6 is characterized in that, said wireless session discussing system terminal also includes first identification control unit;
Said first identification control unit is discerned the speaking request signal that participant that said first audio signal processing unit receives sends; And after this speaking request signal carried out encoding process, modulation treatment, send to the wireless session discussing system main frame of digital session discussing system through said first wireless transmitting unit;
The wireless session discussing system main frame of said digital session discussing system is according to its speaking request signal that receives; Judge whether to accept corresponding participant's speaking request; And transmit control signal to said wireless session discussing system terminal according to judged result; Said wireless session discussing system terminal sends its control signal that receives to said first audio signal processing unit; After by said first audio signal processing unit its control signal that receives being carried out demodulation process, decoding processing, send to said first identification control unit;
Said first identification control unit is according to its control signal that receives, and whether control accepts corresponding participant's speaking request.
8. the wireless session discussing system terminal of digital session discussing system as claimed in claim 7; It is characterized in that; Said wireless session discussing system terminal also comprises the 3rd radio receiving unit, the control signal that the wireless session discussing system main frame that the wireless session discussing system terminal of said digital session discussing system adopts the 3rd wireless communication protocol to receive said digital session discussing system by said the 3rd radio receiving unit sends.
9. like the wireless session discussing system terminal of each described digital session discussing system of claim 6 to 8, it is characterized in that said first wireless communication protocol adopts radio frequency protocol, said second wireless communication protocol adopts the infrared-ray communication agreement.
10. the wireless session discussing system main frame of a digital session discussing system is characterized in that, said wireless session discussing system main frame comprises:
Receive one or more first radio receiving units of the audio signal that first wireless transmitting unit at wireless session discussing system terminal sends respectively through first wireless communication protocol;
After the audio signal that said one or more first radio receiving units are received is carried out demodulation process, decoding processing respectively; Multipath audio signal is carried out audio mixing handle, and with the coding audio signal processing after the audio mixing processing, second audio signal processing unit of modulation treatment;
Audio signal after said second audio signal processing unit processing is sent to second wireless transmitting unit at wireless session discussing system terminal through second wireless communication protocol;
Said first wireless communication protocol is different from said second wireless communication protocol.
11. the wireless session discussing system main frame of digital session discussing system as claimed in claim 10 is characterized in that, said wireless session discussing system main frame also includes second identification control unit;
Said second identification control unit receives the speaking request signal of the wireless session discussing system terminal transmission of digital session discussing system; Judge whether to accept corresponding participant's speaking request; And transmit control signal to said second audio signal processing unit according to judged result; After by said second audio signal processing unit said control signal being carried out encoding process, modulation treatment; Send to corresponding wireless session discussing system terminal, whether accept corresponding participant's speaking request by the control of corresponding wireless session discussing system terminal.
12. the wireless session discussing system main frame of digital session discussing system as claimed in claim 11; It is characterized in that; Said wireless session discussing system main frame also comprises the 3rd wireless transmitting unit; After said second audio signal processing unit carries out encoding process, modulation treatment to said control signal, adopt the 3rd wireless communication protocol to send to corresponding wireless session discussing system terminal by said the 3rd wireless transmitting unit.
13. a digital session communication means is characterized in that, said method comprising the steps of:
A plurality of wireless session discussing systems terminal receives the audio signal of participant's input respectively; And after said audio signal carried out processing and amplifying, analog-to-digital conversion process, encoding process and modulation treatment in order, send to wireless session discussing system main frame through first wireless communication protocol;
Said wireless session discussing system main frame receives the multipath audio signal that send through said first wireless communication protocol at said a plurality of wireless session discussing systems terminal; And after said multipath audio signal carried out demodulation process, decoding processing, audio mixing processing, encoding process, modulation treatment in order, send to said a plurality of wireless session discussing systems terminal through second wireless communication protocol;
Said a plurality of wireless session discussing systems terminal receives the audio signal that said wireless session discussing system main frame sends respectively, and the audio signal that receives is carried out demodulation process, decoding processing, digital-to-analogue conversion processing back output;
Said first wireless communication protocol is different from said second wireless communication protocol.
14. digital session communication means as claimed in claim 13 is characterized in that, said method receives before the step of audio signal of participant input further comprising the steps of respectively at said a plurality of wireless session discussing systems terminal:
Wireless session discussing system terminal receives and identifies the speaking request signal that the participant sends; And after said speaking request signal passed through encoding process, modulation treatment in order, send the speaking request signal to wireless session discussing system main frame through said first wireless communication protocol;
Said wireless session discussing system main frame receives said speaking request signal; And judge whether to accept corresponding participant's speaking request according to said speaking request signal; Send control signal according to judged result; And after said control signal passed through encoding process, modulation treatment in order, send to corresponding wireless session discussing system terminal through said second wireless communication protocol;
Corresponding wireless session discussing system terminal receives said control signal, control accept the participant in corresponding wireless session discussing system terminal speech whether.
15. digital session communication means as claimed in claim 14 is characterized in that, said method receives before the step of audio signal of participant input further comprising the steps of respectively at said a plurality of wireless session discussing systems terminal:
Wireless session discussing system terminal receives and identifies the speaking request signal that the participant sends; And after said speaking request signal passed through encoding process, modulation treatment in order, send the speaking request signal to wireless session discussing system main frame through said first wireless communication protocol;
Said wireless session discussing system main frame receives said speaking request signal; And judge whether to accept corresponding participant's speaking request according to said speaking request signal; Send control signal according to judged result; And after said control signal passed through encoding process, modulation treatment in order, send to corresponding wireless session discussing system terminal through the 3rd wireless communication protocol;
Corresponding wireless session discussing system terminal receives said control signal, control accept the participant in corresponding wireless session discussing system terminal speech whether.
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| CN103873115A (en) * | 2012-12-15 | 2014-06-18 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN103078749B (en) * | 2012-12-28 | 2016-01-27 | 中国科学院计算技术研究所 | A kind of for removable intelligent terminal provide raise one's voice service apparatus and method for |
| CN103686060A (en) * | 2013-12-11 | 2014-03-26 | 成都北岸科技有限公司 | Anti-electromagnetic interference conference terminal |
| CN103716171B (en) * | 2013-12-31 | 2017-04-05 | 广东公信智能会议股份有限公司 | A kind of audio data transmission method and main frame, terminal |
| CN110062121A (en) * | 2019-06-05 | 2019-07-26 | 北京昆羽科技有限公司 | Host equipment, slave devices and audio conference system for audio conferencing |
| CN114520668B (en) * | 2020-11-20 | 2024-02-02 | 海能达通信股份有限公司 | Signal transmission method, signal transmission system and computer storage medium |
| CN113596382A (en) * | 2021-07-19 | 2021-11-02 | 恩平市雷蒙电子有限公司 | Touch conference tablet computer with intelligent conference system |
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