CN201479217U - Digital conference discussion system, terminal and host thereof - Google Patents
Digital conference discussion system, terminal and host thereof Download PDFInfo
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- CN201479217U CN201479217U CN200920133953XU CN200920133953U CN201479217U CN 201479217 U CN201479217 U CN 201479217U CN 200920133953X U CN200920133953X U CN 200920133953XU CN 200920133953 U CN200920133953 U CN 200920133953U CN 201479217 U CN201479217 U CN 201479217U
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Abstract
The utility model is applicable to the technical field of a digital conference system design and provides a digital conference discussion system, a terminal and a host thereof. The system comprises a wireless conference discussion system host and a plurality of wireless conference discussion system terminals; the terminal comprises a second wireless receiving unit, a first audio signal processing unit for receiving and processing audio signals sent by participants, and a first wireless transmitting unit for sending the processed audio signals to the host of the system by a first wireless communication protocol; the host of the system comprises a plurality of wireless receiving units for respectively receiving the audio signals by the first wireless communication protocol, a second audio signal processing unit for processing the received audio signals, and a second wireless transmitting unit for sending the processed audio signals to the terminal by a second wireless communication protocol different from the first wireless communication protocol so as to lead the audio signal and the transmission link signals to be non-interfering and improving the wireless transmission distance of the audio signals.
Description
Technical field
The utility model belongs to the digital conference system design field, relates in particular to a kind of digital session discussing system and terminal thereof, main frame.
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.Along with various international conventions are more and more held in China, 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 system terminals of using for the participant, and the audio signal and the control signal of these a plurality of wireless session discussing system terminal transmitting-receivings are concentrated the wireless session discussing system main frame that distributes with management.
In the prior art, all adopt less radio-frequency to transmit to the audio signal transmission of wireless session discussing system main frame and by wireless session discussing system main frame to the audio signal transmission of 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, 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 the manufacturing cost height.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 radio-frequency (RF) digital wireless session discussing system and infrared simultaneous interpretation system two, increase system design complexity and cost.
The utility model content
The purpose of the utility model embodiment is to provide a kind of digital session discussing system, being intended to solve digital radio session discussing system that prior art provides all adopts less radio-frequency to transmit to the audio signal transmission of wireless session discussing system main frame and by wireless session discussing system main frame to the audio signal transmission of 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 utility model embodiment 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 system terminal, and described 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 linking to each other with the described first audio signal processing unit output, described first audio signal processing unit being handled sends to first wireless transmitting unit of described wireless session discussing system main frame by first wireless communication protocol;
Described wireless session discussing system main frame comprises: one or more first radio receiving units that receive the audio signal of described first wireless transmitting unit transmission respectively by first wireless communication protocol; After the audio signal that is connected with the described first radio receiving unit output, described 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 linking to each other with the described second audio signal processing unit output, described second audio signal processing unit being handled sends to second wireless transmitting unit of described second radio receiving unit by second wireless communication protocol that is different from described first wireless communication protocol.
In above-mentioned digital session discussing system, described first audio signal processing unit specifically comprises: the voice receiver module of the audio signal that the reception participant sends, its output connects the voice pretreatment module of described audio signal being carried out processing and amplifying and analog-to-digital conversion process in turn, first coding module to the processing of the coding audio signal after processing and amplifying and the analog-to-digital conversion process, audio signal after the encoding process is carried out first modulation module of modulation treatment, and the audio signal of described first wireless transmitting unit after with the described first modulation module modulation treatment sends to described wireless session discussing system main frame by first wireless communication protocol;
The output of described first radio receiving unit connects in turn described first radio receiving unit is received second demodulation module that audio signal is carried out demodulation process, audio signal after the demodulation process is carried out second decoder module of decoding processing, multipath audio signal after the decoding processing is carried out the audio mixing module that audio mixing is handled, second coding module with the coding audio signal processing after the audio mixing processing, audio signal after the encoding process is carried out second modulation module of modulation treatment, and described second wireless transmitting unit sends to described second radio receiving unit by the audio signal of second wireless communication protocol after with the described second modulation module modulation treatment;
Described first audio signal processing unit also comprises: the audio signal that input connects the described second radio receiving unit output, receive described second radio receiving unit is carried out first demodulation module of demodulation process; Input connects the described first demodulation module output, the audio signal after the described first demodulation module demodulation process is carried out first decoder module of decoding processing; Input connects the output of described first decoder module, the audio signal after the described first decoder module decoding processing is carried out the D/A converter module of digital-to-analogue conversion processing;
Described wireless session discussing system terminal also comprises:
Input connect described D/A conversion unit output, play the playback unit of the audio signal after the described D/A conversion unit conversion.
In above-mentioned digital session discussing system, described wireless session discussing system terminal also comprises:
Discern the speaking request signal that participant that described voice receiver module receives sends, and described speaking request signal is sent to first identification control unit of described first coding module, two control input end connects the output of described first decoder module and the request transmitting terminal of described voice receiver module respectively, and two control output end connects the input of described first coding module and the request receiving terminal of described voice receiver module respectively;
Described wireless session discussing system main frame also comprises:
The speaking request signal that receives according to described first radio receiving unit judges whether to accept corresponding participant's speaking request, and transmit control signal to second identification control unit of described second coding module according to judged result, its control input end connects the output of described second decoder module, and its output connects the input of described second coding module.
In above-mentioned digital session discussing was, described wireless session discussing system terminal also included:
The 3rd wireless receiving module;
Input connects the 3rd demodulation module of described the 3rd wireless receiving module output;
Input connects the 3rd decoder module of described the 3rd demodulation module output; And
Discern the speaking request signal that participant that described voice receiver module receives sends, and described speaking request signal is sent to first identification control unit of described first coding module, the request transmitting terminal of the described voice receiver module in an one control input end, another control input end connects the output of described the 3rd decoder module, and two control output end connects the input of described first coding module and the request receiving terminal of described voice receiver module respectively;
Described wireless session discussing system main frame also comprises:
The 3rd wireless transmitter module;
Output connects the 3rd modulation module of described the 3rd wireless transmitter module input;
Output connects the 3rd coding module of described the 3rd modulation module input;
The speaking request signal that receives according to described first radio receiving unit judges whether to accept corresponding participant's speaking request, and transmit control signal to second identification control unit of described the 3rd coding module according to judged result, its control input end connects the output of described second decoder module, and its output connects the input of described the 3rd coding module.
Described the 3rd wireless receiving module is for adopting the rf receiver unit of radio frequency protocol;
Described the 3rd wireless transmitter module is for adopting the rf transmitter unit of radio frequency protocol.
In above-mentioned digital session discussing system, described first radio receiving unit is for adopting the rf receiver unit of radio frequency protocol; Described first wireless transmitting unit is for adopting the rf transmitter unit of radio frequency protocol; Described second wireless transmitting unit is for adopting the infra-red ray transmitting unit of infrared-ray communication agreement; Described second radio receiving unit is for adopting the infrared ray receiving element of infrared-ray communication agreement.
Another purpose of the utility model embodiment is to provide a kind of wireless session discussing system terminal of digital session discussing system, and described 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 described first audio signal processing unit processing is sent to first wireless transmitting unit of described wireless session discussing system main frame by first wireless communication protocol;
Receive second radio receiving unit of the audio signal of wireless session discussing system main frame transmission by second wireless communication protocol that is different from described first wireless communication protocol.
In the wireless session discussing system terminal of above-mentioned digital session discussing system, described first audio signal processing unit specifically comprises: receive the voice receiver module of the audio signal that the participant sends, its output connects in turn described audio signal is carried out the voice pretreatment module of processing and amplifying and analog-to-digital conversion process, first coding module 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 modulation module of modulation treatment;
Described first audio signal processing unit also comprises: the audio signal that input connects the described second radio receiving unit output, receive described second radio receiving unit is carried out first demodulation module of demodulation process; Input connects the described first demodulation module output, the audio signal after the described first demodulation module demodulation process is carried out first decoder module of decoding processing; Input connects the output of described first decoder module, the audio signal after the described first decoder module decoding processing is carried out the D/A converter module of digital-to-analogue conversion processing;
Described wireless session discussing system terminal also comprises:
Input connect described D/A conversion unit output, play the playback unit of the audio signal after the described D/A conversion unit conversion.
In the wireless session discussing system terminal of above-mentioned digital session discussing system, described wireless session discussing system terminal also comprises:
Discern the speaking request signal that participant that described voice receiver module receives sends, and described speaking request signal is sent to first identification control unit of described first coding module, two control input end connects the output of described first decoder module and the request transmitting terminal of described voice receiver module respectively, and two control output end connects the input of described first coding module and the request receiving terminal of described voice receiver module respectively.
In the wireless session discussing system terminal of above-mentioned digital session discussing system, described wireless session discussing system terminal also includes:
The 3rd wireless receiving module;
Input connects the 3rd demodulation module of described the 3rd wireless receiving module output;
Input connects the 3rd decoder module of described the 3rd demodulation module output; And
Discern the speaking request signal that participant that described voice receiver module receives sends, and described speaking request signal is sent to first identification control unit of described first coding module, the request transmitting terminal of the described voice receiver module in an one control input end, another control input end connects the output of described the 3rd decoder module, and two control output end connects the input of described first coding module and the request receiving terminal of described voice receiver module respectively;
Described the 3rd wireless receiving module is for adopting the rf receiver unit of radio frequency protocol.
In the wireless session discussing system terminal of above-mentioned digital session discussing system, described first wireless transmitting unit is for adopting the rf transmitter unit of radio frequency protocol; Described second radio receiving unit is for adopting the infrared ray receiving element of infrared-ray communication agreement.
Another purpose of the utility model embodiment is to provide a kind of wireless session discussing system main frame of digital session discussing system, and described wireless session discussing system main frame comprises:
Receive one or more first radio receiving units of the audio signal of described first wireless transmitting unit transmission respectively by first wireless communication protocol;
After the audio signal that described 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 described second audio signal processing unit processing is sent to second wireless transmitting unit of wireless session discussing system terminal by second wireless communication protocol that is different from described first wireless communication protocol.
In the wireless session discussing system main frame of above-mentioned digital session discussing system, described wireless session discussing system main frame also comprises:
The speaking request signal that receives according to described first radio receiving unit judges whether to accept corresponding participant's speaking request, and transmit control signal to second identification control unit of described second coding module according to judged result, its control input end connects the output of described second decoder module, and its output connects the input of described second coding module.
In the wireless session discussing system main frame of above-mentioned digital session discussing system, described wireless session discussing system main frame also comprises:
The 3rd wireless transmitter module;
Output connects the 3rd modulation module of described the 3rd wireless transmitter module input;
Output connects the 3rd coding module of described the 3rd modulation module input;
The speaking request signal that receives according to described first radio receiving unit judges whether to accept corresponding participant's speaking request, and transmit control signal to second identification control unit of described the 3rd coding module according to judged result, its control input end connects the output of described second decoder module, and its output connects the input of described the 3rd coding module;
Described the 3rd wireless transmitter module is for adopting the rf transmitter unit of radio frequency protocol.
Among the utility model embodiment, after a plurality of wireless session discussing system terminals are carried out relevant treatment to the audio signal of participant's input respectively, send to wireless session discussing system main frame by first wireless transmitting unit by first wireless communication protocol, after the audio signal that wireless session discussing system main frame sends a plurality of wireless session discussing system terminals is carried out relevant treatment, send to a plurality of wireless session discussing system terminals by second wireless transmitting unit by second wireless communication protocol that is different from first 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 of 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 of the wireless session discussing system terminal that provides of the utility model embodiment;
Fig. 3 is the schematic diagram of the wireless session discussing system main frame that provides of the utility model embodiment;
Fig. 4 is the concrete structure figure of Fig. 2 of providing of the utility model first embodiment;
Fig. 5 is the concrete structure figure of Fig. 3 of providing of the utility model first embodiment;
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 the utility model second embodiment;
Fig. 9 is the concrete structure figure of Fig. 2 of providing of the utility model second embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Among the utility model embodiment, after a plurality of wireless session discussing system terminals are carried out relevant treatment to the audio signal of participant's input respectively, send to wireless session discussing system main frame by first wireless transmitting unit by first wireless communication protocol, after the audio signal that wireless session discussing system main frame sends a plurality of wireless session discussing system terminals is carried out relevant treatment, send to a plurality of wireless session discussing system terminals by second wireless transmitting unit by second wireless communication protocol, wherein, first wireless communication protocol is different from second wireless communication protocol.
Fig. 2 shows the principle of the wireless session discussing system terminal that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.
The wireless session discussing system terminal 1 that the utility model embodiment 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 linking to each other with first audio signal processing unit, 11 outputs, first audio signal processing unit 11 being handled sends to first wireless transmitting unit 12 of wireless session discussing system main frame by 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 utility model embodiment 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 by second wireless communication protocol that is different from first 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.
Among the utility model embodiment, first wireless transmitting unit 12 adopts different wireless communication protocols with second radio receiving unit 13, 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 of 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 transmitting unit 12 and second radio receiving unit 13 can adopt any of existing wireless communications agreement, as infrared-ray communication agreement, Bluetooth communication protocol, Wi-Fi agreement and other non-standard radio frequency protocol etc.Among the utility model embodiment, first wireless transmitting unit 12 is for adopting the rf transmitter unit of radio frequency protocol; Second radio receiving unit 13 is for adopting the infrared ray receiving element of infrared-ray communication agreement.Certainly, under the situation of taking into account system design complexities not, also can be first wireless transmitting unit 12 for adopting the infrared ray receiving element of infrared-ray communication agreement, second radio receiving unit 13 is for adopting the rf transmitter unit of radio frequency protocol.
Fig. 3 shows the principle of the wireless session discussing system main frame that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.
The wireless session discussing system main frame 2 that the utility model embodiment provides comprises the audio signal that receives the transmission of one road wireless session discussing system terminal respectively by first wireless communication protocol, and one or more first radio receiving units 22 that send the audio signal that receives to second audio signal processing unit 21 (for convenience of description, only show one first radio receiving unit among the figure), be connected with first radio receiving unit, 22 outputs, the audio signal that described first radio receiving unit receives is carried out demodulation process respectively, after the decoding processing, multipath audio signal is carried out audio mixing to be handled, and with the coding audio signal processing after the audio mixing processing, second audio signal processing unit 21 of modulation treatment, and link to each other with second audio signal processing unit, 21 outputs, audio signal after 21 processing of second audio signal processing unit is sent to second wireless transmitting unit 3 of wireless session discussing system terminal 1 by second wireless communication protocol that is different from first wireless communication protocol.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.
Among the utility model embodiment, first radio receiving unit 22 adopts different wireless communication protocols with second wireless transmitting unit 3, make and do not disturb mutually to the audio signal transmission link of wireless session discussing system main frame 2 and by the signal of wireless session discussing system main frame 2 to the audio signal transmission link of wireless session discussing system terminal by wireless session discussing system terminal, improve the wireless transmission distance of audio signal, enlarged power system capacity.Wherein, first radio receiving unit 22 and second wireless transmitting unit 3 can adopt any of existing wireless communications agreement, as infrared-ray communication agreement, Bluetooth communication protocol, Wi-Fi agreement and other non-standard radio frequency protocol etc.Among the utility model embodiment, first radio receiving unit 22 is for adopting the rf receiver unit of radio frequency protocol; Second wireless transmitting unit 3 is for adopting the infra-red ray transmitting unit of infrared-ray communication agreement.Certainly, under the situation of taking into account system design complexities not, also can be first radio receiving unit 22 for adopting the infrared ray receiving element of infrared-ray communication agreement, second wireless transmitting unit 3 is for adopting the rf transmitter unit of radio frequency protocol.
The operation principle of the digital radio session discussing system that the utility model embodiment provides is described below in conjunction with Fig. 2 and Fig. 3.
In 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 sends, 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 sends, 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 as the utility model embodiment 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 utility model embodiment 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 by a public address system.
When the digital radio session discussing system that provides as the utility model embodiment further comprises translating equipment, in the wireless session discussing system main frame that the utility model embodiment 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 by 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 by second radio receiving unit 13, and avoided existing configuration radio-frequency (RF) digital wireless session discussing system and the infrared simultaneous interpretation system two of needing to overlap independently system, cause system design complexity, problem that cost is high.
In addition, in order to limit participant's number of speech, satisfy system's needs to greatest extent, among the utility model embodiment, 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 by first audio signal processing unit 11 this speaking request signal being carried out encoding process, modulation treatment, send to wireless session discussing system main frame 2 by 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 sends, 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 default 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 by the 3rd wireless communication protocol.The 3rd wireless communication protocol can adopt existing any wireless communication protocol.
Certainly, when specific implementation, first identification control unit 15 can not send the speaking request signal to wireless session discussing system main frame 2 yet, and directly utilize situation to carry out resource distribution according to the communication channel resources of system by second identification control unit 23, and whether accept corresponding participant's speaking request according to resource distribution result decision, 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 does not repeat them here as mentioned above.
Fig. 4 shows the concrete structure of Fig. 2 that the utility model first embodiment provides, for convenience of explanation, only shows the part relevant with the utility model embodiment.
The wireless session discussing system terminal 1 that the utility model embodiment provides specifically comprises the voice receiver module 111 of the audio signal that the reception participant sends, and its output connects the voice pretreatment module 112 of audio signal being carried out processing and amplifying and analog-to-digital conversion process in turn, first coding module 113 to the processing of the coding audio signal after processing and amplifying and the analog-to-digital conversion process, audio signal after the encoding process is carried out first modulation module 114 of modulation treatment, and first wireless transmitting unit 12 that the audio signal after the modulation treatment is sent to wireless session discussing system main frame by 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 utility model embodiment provides also specifically comprises second radio receiving unit 13 that receives the audio signal of wireless session discussing system main frame transmission by second wireless communication protocol, it is external or be built in wireless session discussing system terminal 1, and its output connects in turn and receives to such an extent that audio signal is carried out first demodulation module 115 of demodulation process to it, audio signal after the demodulation process is carried out first decoder module 116 of decoding processing, audio signal after the decoding processing is carried out the D/A converter module 117 that digital-to-analogue conversion is handled, and the playback unit 14 of the audio signal after the broadcast digital-to-analogue conversion.
Fig. 5 shows the concrete structure of Fig. 3 that the utility model first embodiment provides, for convenience of explanation, only shows the part relevant with the utility model embodiment.
The wireless session discussing system main frame 2 that the utility model embodiment provides comprises first radio receiving unit 22 of the audio signal that receives wireless session discussing system terminal transmission, it is external or be built in wireless session discussing system main frame 2, and its output connects second demodulation module 211 that its audio signal that receives is carried out demodulation process in turn, audio signal after the demodulation process is carried out second decoder module 212 of decoding processing, multipath audio signal after the decoding processing is carried out the audio mixing module 213 that audio mixing is handled, second coding module 214 with the coding audio signal processing after the audio mixing processing, audio signal after the encoding process is carried out second modulation module 215 of modulation treatment, audio signal after the modulation treatment is carried out the filtering amplification module 216 of filter amplifying processing, and second wireless transmitting unit 3 that the audio signal after the filter amplifying processing is sent to wireless session discussing system terminal by second wireless communication protocol.During specific implementation, 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 as the utility model embodiment 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 utility model embodiment provides, audio mixing module 213 connects the input of meeting-place public address system by the D/A converter module in the wireless session discussing system main frame 217, 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 by the meeting-place public address system.
When the digital radio session discussing system that provides as the utility model embodiment further comprises translating equipment, in the wireless session discussing system main frame 2 that the utility model embodiment provides, the input of second coding module 214 connects the output of translating equipment simultaneously by 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 by second radio receiving unit 13, and avoided existing configuration radio-frequency (RF) digital wireless session discussing system and the infrared simultaneous interpretation system two of needing to overlap independently system, cause system design complexity, problem that cost is high.
The operation principle of the digital radio session discussing system that the utility model first embodiment provides is described below in conjunction with Fig. 4 and Fig. 5.
In wireless session discussing system terminal 1, voice receiver module 111 receives the audio signal that the participant sends, after carrying out processing and amplifying and analog-to-digital conversion process via voice pretreatment module 112, carry out encoding process by first coding module 113, carry out modulation treatment by first modulation module 114, afterwards, mutual by 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 sends, 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 turn, modulate by second modulation module 215, carry out filter amplifying processing by filtering amplification module 216, afterwards, mutual by 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 sends, and carry out demodulation process by first demodulation module 115 in turn, carry out decoding processing by first decoder module 116, after carrying out analog-to-digital conversion process by AD conversion unit 110, play by playback unit 14.
In addition, in order to limit participant's number of speech, satisfy system's needs to greatest extent, among the utility model embodiment, wireless session discussing system terminal 1 also further includes first identification control unit 15, two control input end connects 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 by voice receiver module 111, the participant sends the speaking request signal by voice receiver module 111 to first identification control unit 15, first identification control unit, 15 these speaking request signals of identification, and with this this speaking request signal by first coding module, 113 encoding process, and after first modulation module, 114 modulation treatment, send to wireless session discussing system main frame 2 by 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 sends, and send it 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 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 by second wireless transmitting unit 3; Wireless session discussing system terminal 1 receives the control signal that second wireless transmitting unit 3 sends by second radio receiving unit 13, and carry out demodulation process through first demodulation module 115, 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, its concrete controlled step does not repeat them here as mentioned above.
Among the utility model embodiment, 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 as Fig. 6, Fig. 7 shows the concrete structure figure of second wireless transmitting unit 3 among Fig. 5, for convenience of explanation, only show the part relevant with the utility model embodiment.
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 by 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 specific implementation, also can under the prerequisite of not emphasizing 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 comprise to the signal after the modulation of first modulation module 114 carry out Filtering Processing filtration module 31, the signal after filtration module 31 Filtering Processing is carried out the amplification module 32 of processing and amplifying and the infrared module 33 that the signal after amplification module 32 processing and amplifying is sent to second radio receiving unit 13 by the infrared-ray communication agreement.
Fig. 8 shows the concrete structure of Fig. 2 that the utility model second embodiment provides, for convenience of explanation, only shows the part relevant with the utility model embodiment.
With shown in Figure 4 different, among the utility model embodiment, 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, 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 mentioned above, do not repeat them here.
Fig. 9 shows the concrete structure of Fig. 2 that the utility model second embodiment provides, for convenience of explanation, only shows the part relevant with the utility model embodiment.
With shown in Figure 5 different, among the utility model embodiment, 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, 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 mentioned above, do not repeat them here.
Different with the digital radio session discussing system that the utility model first embodiment provides, in the digital radio session discussing system that the utility model second embodiment 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 by the 3rd coding module 220, after the 3rd modulation module 219 carries out modulation treatment, send to wireless session discussing system terminal 1 by 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 sends, and carry out demodulation process through the 3rd demodulation module 118, 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, among the utility model embodiment, 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, 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, carry multiple signals respectively compared to previous two-way radiofrequency signal, institute's data carried by data amount greatly reduces on the signal link, can't cause interference to transmission of audio signals.
Among the utility model embodiment, after a plurality of wireless session discussing system terminals are carried out relevant treatment to the audio signal of participant's input respectively, send to wireless session discussing system main frame by first wireless transmitting unit by first wireless communication protocol, after the audio signal that wireless session discussing system main frame sends a plurality of wireless session discussing system terminals is carried out relevant treatment, send to a plurality of wireless session discussing system terminals by second wireless transmitting unit by second wireless communication protocol that is different from first 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 of 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 by second radio receiving unit, and avoided existing configuration radio-frequency (RF) digital wireless session discussing system and the infrared simultaneous interpretation system two of needing to overlap independently system, cause system design complexity, problem that 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 only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (13)
1. a digital session discussing system comprises a wireless session discussing system main frame and a plurality of wireless session discussing system terminal, it is characterized in that described 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 linking to each other with the described first audio signal processing unit output, described first audio signal processing unit being handled sends to first wireless transmitting unit of described wireless session discussing system main frame by first wireless communication protocol;
Described wireless session discussing system main frame comprises: one or more first radio receiving units that receive the audio signal of described first wireless transmitting unit transmission respectively by first wireless communication protocol; After the audio signal that is connected with the described first radio receiving unit output, described 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 linking to each other with the described second audio signal processing unit output, described second audio signal processing unit being handled sends to second wireless transmitting unit of described second radio receiving unit by second wireless communication protocol that is different from described first wireless communication protocol.
2. digital session discussing system as claimed in claim 1, it is characterized in that, described first audio signal processing unit specifically comprises: the voice receiver module of the audio signal that the reception participant sends, its output connects the voice pretreatment module of described audio signal being carried out processing and amplifying and analog-to-digital conversion process in turn, first coding module to the processing of the coding audio signal after processing and amplifying and the analog-to-digital conversion process, audio signal after the encoding process is carried out first modulation module of modulation treatment, and the audio signal of described first wireless transmitting unit after with the described first modulation module modulation treatment sends to described wireless session discussing system main frame by first wireless communication protocol;
The output of described first radio receiving unit connects in turn described first radio receiving unit is received second demodulation module that audio signal is carried out demodulation process, audio signal after the demodulation process is carried out second decoder module of decoding processing, multipath audio signal after the decoding processing is carried out the audio mixing module that audio mixing is handled, second coding module with the coding audio signal processing after the audio mixing processing, audio signal after the encoding process is carried out second modulation module of modulation treatment, and described second wireless transmitting unit sends to described second radio receiving unit by the audio signal of second wireless communication protocol after with the described second modulation module modulation treatment;
Described first audio signal processing unit also comprises: the audio signal that input connects the described second radio receiving unit output, receive described second radio receiving unit is carried out first demodulation module of demodulation process; Input connects the described first demodulation module output, the audio signal after the described first demodulation module demodulation process is carried out first decoder module of decoding processing; Input connects the output of described first decoder module, the audio signal after the described first decoder module decoding processing is carried out the D/A converter module of digital-to-analogue conversion processing;
Described wireless session discussing system terminal also comprises:
Input connect described D/A conversion unit output, play the playback unit of the audio signal after the described D/A conversion unit conversion.
3. want 2 described digital session discussing systems as right, it is characterized in that, described wireless session discussing system terminal also comprises:
Discern the speaking request signal that participant that described voice receiver module receives sends, and described speaking request signal is sent to first identification control unit of described first coding module, two control input end connects the output of described first decoder module and the request transmitting terminal of described voice receiver module respectively, and two control output end connects the input of described first coding module and the request receiving terminal of described voice receiver module respectively;
Described wireless session discussing system main frame also comprises:
The speaking request signal that receives according to described first radio receiving unit judges whether to accept corresponding participant's speaking request, and transmit control signal to second identification control unit of described second coding module according to judged result, its control input end connects the output of described second decoder module, and its output connects the input of described second coding module.
4. digital session discussing system as claimed in claim 2 is characterized in that, described wireless session discussing system terminal also includes:
The 3rd wireless receiving module;
Input connects the 3rd demodulation module of described the 3rd wireless receiving module output;
Input connects the 3rd decoder module of described the 3rd demodulation module output; And
Discern the speaking request signal that participant that described voice receiver module receives sends, and described speaking request signal is sent to first identification control unit of described first coding module, the request transmitting terminal of the described voice receiver module in an one control input end, another control input end connects the output of described the 3rd decoder module, and two control output end connects the input of described first coding module and the request receiving terminal of described voice receiver module respectively;
Described wireless session discussing system main frame also comprises:
The 3rd wireless transmitter module;
Output connects the 3rd modulation module of described the 3rd wireless transmitter module input;
Output connects the 3rd coding module of described the 3rd modulation module input;
The speaking request signal that receives according to described first radio receiving unit judges whether to accept corresponding participant's speaking request, and transmit control signal to second identification control unit of described the 3rd coding module according to judged result, its control input end connects the output of described second decoder module, and its output connects the input of described the 3rd coding module;
Described the 3rd wireless receiving module is for adopting the rf receiver unit of radio frequency protocol;
Described the 3rd wireless transmitter module is for adopting the rf transmitter unit of radio frequency protocol.
5. as each described digital session discussing system of claim 1 to 4, it is characterized in that described first radio receiving unit is for adopting the rf receiver unit of radio frequency protocol; Described first wireless transmitting unit is for adopting the rf transmitter unit of radio frequency protocol; Described second wireless transmitting unit is for adopting the infra-red ray transmitting unit of infrared-ray communication agreement; Described second radio receiving unit is for adopting the infrared ray receiving element of infrared-ray communication agreement.
6. the wireless session discussing system terminal of a digital session discussing system is characterized in that, described 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 described first audio signal processing unit processing is sent to first wireless transmitting unit of described wireless session discussing system main frame by first wireless communication protocol;
Receive second radio receiving unit of the audio signal of wireless session discussing system main frame transmission by second wireless communication protocol that is different from described first wireless communication protocol.
7. the wireless session discussing system terminal of digital session discussing system as claimed in claim 6, it is characterized in that, described first audio signal processing unit specifically comprises: receive the voice receiver module of the audio signal that the participant sends, its output connects in turn described audio signal is carried out the voice pretreatment module of processing and amplifying and analog-to-digital conversion process, first coding module 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 modulation module of modulation treatment;
Described first audio signal processing unit also comprises: the audio signal that input connects the described second radio receiving unit output, receive described second radio receiving unit is carried out first demodulation module of demodulation process; Input connects the described first demodulation module output, the audio signal after the described first demodulation module demodulation process is carried out first decoder module of decoding processing; Input connects the output of described first decoder module, the audio signal after the described first decoder module decoding processing is carried out the D/A converter module of digital-to-analogue conversion processing;
Described wireless session discussing system terminal also comprises:
Input connect described D/A conversion unit output, play the playback unit of the audio signal after the described D/A conversion unit conversion.
8. the wireless session discussing system terminal of digital session discussing system as claimed in claim 7 is characterized in that, described wireless session discussing system terminal also comprises:
Discern the speaking request signal that participant that described voice receiver module receives sends, and described speaking request signal is sent to first identification control unit of described first coding module, two control input end connects the output of described first decoder module and the request transmitting terminal of described voice receiver module respectively, and two control output end connects the input of described first coding module and the request receiving terminal of described voice receiver module respectively.
9. the wireless session discussing system terminal of digital session discussing system as claimed in claim 7 is characterized in that, described wireless session discussing system terminal also includes:
The 3rd wireless receiving module;
Input connects the 3rd demodulation module of described the 3rd wireless receiving module output;
Input connects the 3rd decoder module of described the 3rd demodulation module output; And
Discern the speaking request signal that participant that described voice receiver module receives sends, and described speaking request signal is sent to first identification control unit of described first coding module, the request transmitting terminal of the described voice receiver module in an one control input end, another control input end connects the output of described the 3rd decoder module, and two control output end connects the input of described first coding module and the request receiving terminal of described voice receiver module respectively;
Described the 3rd wireless receiving module is for adopting the rf receiver unit of radio frequency protocol.
10. as the wireless session discussing system terminal of each described digital session discussing system of claim 6 to 9, it is characterized in that described first wireless transmitting unit is for adopting the rf transmitter unit of radio frequency protocol; Described second radio receiving unit is for adopting the infrared ray receiving element of infrared-ray communication agreement.
11. the wireless session discussing system main frame of a digital session discussing system is characterized in that, described wireless session discussing system main frame comprises:
Receive one or more first radio receiving units of the audio signal of described first wireless transmitting unit transmission respectively by first wireless communication protocol;
After the audio signal that described 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 described second audio signal processing unit processing is sent to second wireless transmitting unit of wireless session discussing system terminal by second wireless communication protocol that is different from described first wireless communication protocol.
12. the wireless session discussing system main frame of digital session discussing system as claimed in claim 11 is characterized in that, described wireless session discussing system main frame also comprises:
The speaking request signal that receives according to described first radio receiving unit judges whether to accept corresponding participant's speaking request, and transmit control signal to second identification control unit of described second coding module according to judged result, its control input end connects the output of described second decoder module, and its output connects the input of described second coding module.
13. the wireless session discussing system main frame of digital session discussing system as claimed in claim 11 is characterized in that, described wireless session discussing system main frame also comprises:
The 3rd wireless transmitter module;
Output connects the 3rd modulation module of described the 3rd wireless transmitter module input;
Output connects the 3rd coding module of described the 3rd modulation module input;
The speaking request signal that receives according to described first radio receiving unit judges whether to accept corresponding participant's speaking request, and transmit control signal to second identification control unit of described the 3rd coding module according to judged result, its control input end connects the output of described second decoder module, and its output connects the input of described the 3rd coding module;
Described the 3rd wireless transmitter module is for adopting the rf transmitter unit of radio frequency protocol.
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| CN200920133953XU CN201479217U (en) | 2009-07-24 | 2009-07-24 | Digital conference discussion system, terminal and host thereof |
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| CN200920133953XU CN201479217U (en) | 2009-07-24 | 2009-07-24 | Digital conference discussion system, terminal and host thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109547893A (en) * | 2017-09-22 | 2019-03-29 | 深圳科润视讯技术有限公司 | A kind of wireless audio system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109547893A (en) * | 2017-09-22 | 2019-03-29 | 深圳科润视讯技术有限公司 | A kind of wireless audio system |
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