Distributed voice conference system and control method thereof

Abstract

The invention provides a distributed voice conference system and a control method thereof. The distributed voice conference system comprises a main device and a plurality of sub-devices. Signal transmission is carried out between the main device and the plurality of sub-devices in a time division multiplexing mode; the plurality of sub-devices correspond to different communication time slots of the same time division multiplexing signal, and the communication time slot interval is a preset step length parameter; a target sub-device in the plurality of sub-devices is used for receiving a clock signal of downlink data of the master device; determining a target subordinate sub-device according to the clock signal, an initial frame synchronization signal of the target sub-device and a preset step length parameter; transmitting the downlink data to the target lower-level sub-equipment; the main device is used for receiving uplink data of the target sub-device; and determining a target communication time slot and equipment information corresponding to the target sub-equipment according to the uplink data. According to the system, hardware requirements and complexity can be reduced, so that the total cost of the system is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a distributed voice conferencing system and a control method thereof. Background Art

[0002] Existing distributed voice conferencing systems typically utilize two connection methods. First, each slave device is individually connected to a master device. However, when there are many slave devices, the master device requires numerous interfaces, which takes up space and resources, significantly increases costs, and makes it difficult to expand the number of slave devices. Second, multiple slave devices are connected in series to the master device, requiring address configuration on the slave devices.

[0003] Overall, existing distributed voice conferencing systems have the disadvantages of high cost and inconvenient expansion. Summary of the Invention

[0004] The purpose of the present invention is to provide a distributed voice conferencing system and a control method thereof, so as to alleviate the technical problems of the existing distributed voice conferencing system such as high cost and inconvenient expansion, reduce costs and improve the convenience of system expansion.

[0005] In the first aspect, an embodiment of the present invention provides a distributed voice conferencing system, comprising: a main device and multiple sub-devices; time division multiplexing is used to transmit signals between the main device and the multiple sub-devices; the multiple sub-devices correspond to different communication time slots of the same time division multiplexing signal, and the communication time slot interval is a preset step parameter; the target sub-device among the multiple sub-devices is used to receive the clock signal of the downlink data of the main device; the target subordinate sub-device is determined according to the clock signal, the initial frame synchronization signal of the target sub-device and the preset step parameter; and the downlink data is transmitted to the target subordinate sub-device; the main device is used to receive the uplink data of the target sub-device; and the target communication time slot and device information corresponding to the target sub-device are determined according to the uplink data.

[0006] In a preferred embodiment of the present invention, the system further includes: a power supply and a ground line connected to the main device and the plurality of sub-devices.

[0007] In a preferred embodiment of the present invention, the rate of the time division multiplexing signal is 2M; each of the sub-devices occupies 3 time slots of the 2M; and the number of the sub-devices is 10.

[0008] In a preferred embodiment of the present invention, the two time slots of 2M are redundant time slots.

[0009] In a preferred embodiment of the present invention, the target sub-device is further configured to transmit the uplink data through the first three time slots of the 2M, and transmit the last 29 time slots of the 2M in a transparent transmission manner.

[0010] In a preferred embodiment of the present invention, the target time slot of the three time slots is used to transmit UART serial port signals; the master device is further used to determine the presence of the target sub-device based on the UART serial port signals.

[0011] In a preferred embodiment of the present invention, the target time slot is the third time slot among the three time slots.

[0012] In the second aspect, an embodiment of the present invention also provides a control method for a distributed voice conferencing system, which is applied to the above-mentioned distributed voice conferencing system; the above-mentioned method includes: receiving the clock signal of the downlink data of the above-mentioned main device through the target sub-device among the above-mentioned multiple sub-devices; determining the target subordinate sub-device based on the above-mentioned clock signal, the initial frame synchronization signal of the above-mentioned target sub-device and the above-mentioned preset step parameters; and transmitting the above-mentioned downlink data to the above-mentioned target subordinate sub-device; receiving the uplink data of the above-mentioned target sub-device through the above-mentioned main device; and determining the target communication time slot and device information corresponding to the above-mentioned target sub-device based on the above-mentioned uplink data.

[0013] In a preferred embodiment of the present invention, after the step of transmitting the above-mentioned downlink data to the above-mentioned target lower-level sub-device, the above-mentioned method includes: when the above-mentioned target lower-level sub-device receives the above-mentioned downlink data, determining the target lower-level sub-device corresponding to the above-mentioned target lower-level sub-device according to the above-mentioned clock signal and the above-mentioned preset step parameters; and, transmitting the above-mentioned downlink data to the target lower-level sub-device corresponding to the above-mentioned target lower-level sub-device.

[0014] In a preferred embodiment of the present invention, before the step of receiving the clock signal of the downlink data of the above-mentioned main device through the target sub-device among the above-mentioned multiple sub-devices, the above-mentioned method includes: setting the initial frame synchronization signal of the first sub-device among the above-mentioned multiple sub-devices; adjusting the above-mentioned initial frame synchronization signal according to a preset step parameter through the above-mentioned first sub-device to obtain an adjusted frame synchronization signal; and transmitting the above-mentioned adjusted frame synchronization signal to the lower-level sub-device corresponding to the above-mentioned first sub-device.

[0015] The embodiments of the present invention have the following beneficial technical effects:

[0016] An embodiment of the present invention provides a distributed voice conferencing system and a control method thereof, comprising: a master device and multiple sub-devices; the master device and the multiple sub-devices use time division multiplexing to transmit signals; the multiple sub-devices correspond to different communication time slots of the same time division multiplexing signal, and the communication time slot interval is a preset step parameter; a target sub-device among the multiple sub-devices is used to receive a clock signal of downlink data from the master device; a target lower-level sub-device is determined based on the clock signal, the initial frame synchronization signal of the target sub-device, and the preset step parameter; and the downlink data is transmitted to the target lower-level sub-device; the master device is used to receive uplink data from the target sub-device; and the target communication time slot and device information corresponding to the target sub-device are determined based on the uplink data. This system achieves efficient and orderly communication between multiple devices and the master device through time division multiplexing and frame synchronization technology, reduces hardware requirements and complexity, and thus significantly reduces the overall cost of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the structure of an existing conference system provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the structure of another existing conference system provided by an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the structure of a distributed voice conferencing system provided by an embodiment of the present invention;

[0021] Figure 4 A schematic flow chart of a control method for a distributed voice conferencing system provided by an embodiment of the present invention.

[0022] Icons: 10-main device; 11-sub device. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Existing distributed voice conferencing systems typically utilize two connection methods. First, each sub-device is individually connected to a master device. When there are many sub-devices, the master device requires numerous interfaces, which takes up space and resources, significantly increases costs, and makes it difficult to expand the number of sub-devices. Second, multiple sub-devices are connected in series to the master device, requiring address configuration within the sub-devices. Overall, existing distributed voice conferencing systems suffer from high costs and inconvenient expansion.

[0025] For ease of understanding, Figure 1 This is a schematic diagram of the structure of an existing conference system provided by an embodiment of the present invention. Figure 1 As can be seen, each sub-device 11 in the system is connected to the main device 10 separately.

[0026] Further, Figure 2 This is a structural diagram of another existing conference system provided by an embodiment of the present invention. Figure 2 As can be seen, the master device 10 is connected in series with a plurality of slave devices 11. In order for the master device 10 to identify each slave device, an address needs to be set for each slave device 11.

[0027] Based on this, embodiments of the present invention provide a distributed voice conferencing system and control method thereof. This system utilizes time division multiplexing and frame synchronization technologies to achieve efficient and orderly communication between multiple devices and a master device, reducing hardware requirements and complexity, thereby significantly lowering the overall system cost. To facilitate understanding, a distributed voice conferencing system is first introduced.

[0028] Example 1

[0029] In an embodiment of the present invention, Figure 3 A structural diagram of a distributed voice conferencing system provided by an embodiment of the present invention.

[0030] Depend on Figure 3 As can be seen, the system includes: a main device 10 and multiple sub-devices 11; time division multiplexing is used to transmit signals between the above-mentioned main device 10 and the above-mentioned multiple sub-devices 11; the above-mentioned multiple sub-devices 11 correspond to different communication time slots of the same time division multiplexing signal, and the communication time slot interval is a preset step parameter; the target sub-device among the above-mentioned multiple sub-devices 11 is used to receive the clock signal of the downlink data of the above-mentioned main device; according to the above-mentioned clock signal, the initial frame synchronization signal of the above-mentioned target sub-device and the above-mentioned preset step parameter, the target lower-level sub-device is determined; and the above-mentioned downlink data is transmitted to the above-mentioned target lower-level sub-device; the above-mentioned main device 10 is used to receive the uplink data of the above-mentioned target sub-device; according to the above-mentioned uplink data, the target communication time slot and device information corresponding to the above-mentioned target sub-device are determined.

[0031] Furthermore, the system further includes: a power supply and a ground line connected to the main device 10 and the plurality of sub-devices 11 .

[0032] Furthermore, the rate of the above-mentioned time division multiplexing signal is 2M; each of the above-mentioned sub-devices occupies 3 time slots of the above-mentioned 2M; and the number of the above-mentioned sub-devices is 10.

[0033] Here, the rate of the above-mentioned time division multiplexing signal is 2M, that is, it has 32 time slots.

[0034] Furthermore, the two time slots of the above 2M are redundant time slots.

[0035] In actual operation, the target sub-device is further configured to transmit the uplink data through the first three time slots of the 2M, and transmit the last 29 time slots of the 2M in a transparent transmission manner.

[0036] Among them, the target time slot of the above three time slots is used to transmit UART serial port signals; the above master device is also used to determine the presence status of the above target sub-device based on the above UART serial port signals.

[0037] Furthermore, the target time slot is the third time slot among the three time slots.

[0038] Specifically, the core operation for uplink data is as follows: the first slave device receives the downlink data and clock from the host and transparently transmits it to the next device, shifting the frame synchronization by three time slots before transmitting it to the next device. Subsequent devices repeat this process until the last slave device is reached. The core operation for uplink data is as follows: each slave device occupies the first three time slots when uploading the aforementioned uplink data, and transparently transmits the remaining data in the following 29 time slots. As a result, the frame synchronization of each slave device differs by three time slots. A slave device always uses the first three time slots of its corresponding frame synchronization signal, while the master device can see the time slots of all subsequent slave devices.

[0039] An embodiment of the present invention provides a distributed voice conferencing system, comprising: a main device and multiple sub-devices; the main device and the multiple sub-devices use time division multiplexing to transmit signals; the multiple sub-devices correspond to different communication time slots of the same time division multiplexing signal, and the communication time slot interval is a preset step parameter; a target sub-device among the multiple sub-devices is used to receive a clock signal of downlink data from the main device; based on the clock signal, the initial frame synchronization signal of the target sub-device, and the preset step parameter, a target lower-level sub-device is determined; and the downlink data is transmitted to the target lower-level sub-device; the main device is used to receive uplink data from the target sub-device; based on the uplink data, the target communication time slot and device information corresponding to the target sub-device are determined. This system achieves efficient and orderly communication between multiple devices and the main device through time division multiplexing and frame synchronization technology, reduces hardware requirements and complexity, and thus significantly reduces the overall cost of the system.

[0040] Example 2

[0041] Based on the above embodiments, Figure 4 A schematic flow chart of a control method for a distributed voice conferencing system provided by an embodiment of the present invention.

[0042] Depend on Figure 4 As can be seen, the method includes:

[0043] Step S101: Receive a clock signal of downlink data from the master device via a target sub-device among the multiple sub-devices; determine a target lower-level sub-device based on the clock signal, an initial frame synchronization signal from the target sub-device, and the preset step size parameter; and transmit the downlink data to the target lower-level sub-device.

[0044] Step S102: receiving uplink data of the target sub-device via the master device; and determining target communication time slot and device information corresponding to the target sub-device according to the uplink data.

[0045] In actual operation, after the step of transmitting the above-mentioned downlink data to the above-mentioned target lower-level sub-device, the above-mentioned method includes: when the above-mentioned target lower-level sub-device receives the above-mentioned downlink data, determining the target lower-level sub-device corresponding to the above-mentioned target lower-level sub-device according to the above-mentioned clock signal and the above-mentioned preset step parameters; and transmitting the above-mentioned downlink data to the target lower-level sub-device corresponding to the above-mentioned target lower-level sub-device.

[0046] Furthermore, before the step of receiving the clock signal of the downlink data of the above-mentioned main device through the target sub-device among the above-mentioned multiple sub-devices, the above-mentioned method includes: setting the initial frame synchronization signal of the first sub-device among the above-mentioned multiple sub-devices; adjusting the above-mentioned initial frame synchronization signal according to the preset step parameter through the above-mentioned first sub-device to obtain the adjusted frame synchronization signal; and transmitting the above-mentioned adjusted frame synchronization signal to the lower-level sub-device corresponding to the above-mentioned first sub-device.

[0047] The control method for a distributed voice conferencing system provided in an embodiment of the present invention has the same technical features as the distributed voice conferencing system provided in the aforementioned embodiment, and therefore can solve the same technical problems and achieve the same technical effects. Those skilled in the art will clearly understand that, for ease and brevity of description, the specific working process of the method described above can refer to the corresponding process in the aforementioned embodiment and will not be repeated here.

[0048] In addition, in the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] Finally, it should be noted that the above embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention rather than to limit it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that any technician familiar with this technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered by the protection scope of the present invention.

Claims

1. A distributed voice conferencing system, characterized in that: include: A master device and multiple slave devices; The master device and the plurality of sub-devices use a time division multiplexing method for signal transmission; the plurality of sub-devices correspond to different communication time slots of the same time division multiplexing signal, and the communication time slot interval is a preset step parameter; A target sub-device among the multiple sub-devices is used to receive a clock signal of downlink data from the master device; Determining a target lower-level sub-device according to the clock signal, the initial frame synchronization signal of the target sub-device, and the preset step size parameter; and, transmitting the downlink data to the target lower-level sub-device; The master device is used to receive uplink data of the target sub-device; The target communication time slot and device information corresponding to the target sub-device are determined according to the uplink data.

2. The distributed voice conferencing system according to claim 1, characterized in that: The system further includes a power supply and a ground line connected to the main device and the plurality of sub-devices.

3. The distributed voice conferencing system according to claim 1, characterized in that: The rate of the time division multiplexing signal is 2M; each of the sub-devices occupies 3 time slots of the 2M; and the number of the sub-devices is 10.

4. The distributed voice conferencing system according to claim 3, characterized in that: The two time slots of 2M are redundant time slots.

5. The distributed voice conferencing system according to claim 3, characterized in that: The target sub-device is further configured to transmit the uplink data through the first three time slots of the 2M and transmit the last 29 time slots of the 2M in a transparent transmission manner.

6. The distributed voice conferencing system according to claim 3, characterized in that: The target time slot of the three time slots is used to transmit UART serial port signals; the master device is further used to determine the presence status of the target sub-device based on the UART serial port signals.

7. The distributed voice conferencing system according to claim 6, characterized in that: The target time slot is the third time slot among the three time slots.

8. A control method for a distributed voice conferencing system, characterized in that: Applied to the distributed voice conferencing system according to any one of claims 1 to 7; the method comprising: receiving a clock signal of downlink data of the master device through a target sub-device among the multiple sub-devices; determining a target lower-level sub-device according to the clock signal, an initial frame synchronization signal of the target sub-device, and the preset step size parameter; and transmitting the downlink data to the target lower-level sub-device; The uplink data of the target sub-device is received through the main device; and the target communication time slot and device information corresponding to the target sub-device are determined according to the uplink data.

9. The control method of the distributed voice conferencing system according to claim 8, characterized in that: After the step of transmitting the downlink data to the target lower-level sub-device, the method includes: When the target lower-level sub-device receives the downlink data, it determines the target lower-level sub-device corresponding to the target lower-level sub-device according to the clock signal and the preset step parameter; and transmits the downlink data to the target lower-level sub-device corresponding to the target lower-level sub-device.

10. The control method of the distributed voice conference system according to claim 8, characterized in that: Before the step of receiving, by a target sub-device among the multiple sub-devices, a clock signal of downlink data of the master device, the method includes: Setting an initial frame synchronization signal for a first sub-device among the multiple sub-devices; The first sub-device adjusts the initial frame synchronization signal according to a preset step parameter to obtain an adjusted frame synchronization signal; and transmits the adjusted frame synchronization signal to a lower-level sub-device corresponding to the first sub-device.

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