Intelligent conference recorder

Abstract

The utility model relates to the technical field of conference sound pickups, in particular to an intelligent conference recorder which comprises a conference recorder outer shell. A dual-mode Bluetooth module board, a power supply, a cascade output interface, a cascade input interface, a cascade detection circuit, an IO (input / output) matching circuit, a recording key circuit and a DSP (digital signal processor) module board used for encoding audio signals are mounted in the conference recorder outer shell, and dual-mode Bluetooth and one-key local recording functions are added on the basis of a traditional conference recorder. Meanwhile, the system also supports ultra-long-distance recording, and can be matched with client application software in actual use to simplify related document processing work after a conference, such as conference content arrangement, conference content translation and conference content summarization, so that the workload of personnel can be saved, the conference efficiency can be improved, and the conference cost can be saved; in addition, one-key sharing of conference related content is supported, and the working efficiency is improved. The intelligent conference recorder is simple in structure, low in cost and easy to implement and popularize.

Description

Technical Field

[0001] The utility model relates to the technical field of conference microphones, in particular to an intelligent conference recorder. Background Art

[0002] Traditional conference microphones only have the most basic sound pickup function and are only used for audio conferencing. Their functions are relatively simple. Utility Model Content

[0003] The utility model provides an intelligent conference recorder supporting dual Bluetooth functions in order to solve the defects and shortcomings of the prior art.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is an intelligent conference recorder, including a conference recorder outer shell, characterized in that a dual-mode Bluetooth module board, a power supply, a cascade output interface, a cascade input interface, a cascade detection circuit, an IO matching circuit, a recording key circuit and a DSP module board for encoding audio signals are installed in the conference recorder outer shell, the dual-mode Bluetooth module board is electrically connected to the power supply, a control circuit is provided on the dual-mode Bluetooth module board, the DSP module board is communicatively connected to the control circuit via I2C, the recording key circuit, the cascade output interface, the cascade input interface, the cascade detection circuit and the IO matching circuit are all electrically connected to the control circuit, the DSP module board is electrically connected to the power supply, and multiple groups of microphones are installed on the DSP module board.

[0005] Furthermore, the dual-mode Bluetooth module board includes a traditional BT Bluetooth chip and a BLE Bluetooth chip, the traditional BT Bluetooth chip is connected to the BLE Bluetooth chip via I2C, and the BLE Bluetooth chip is connected to the DSP module board via I2C.

[0006] Furthermore, the DSP module board is provided with an audio processing circuit and a DSP upgrade socket, the audio processing circuit includes a DSP audio processor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a first capacitor, a second capacitor and a third capacitor, one end of the first resistor is connected to the fifteenth pin of the DSP audio processor, and the other end is connected to the power supply, one end of the first capacitor is grounded, and the other end is connected to the first resistor, one end of the second resistor is electrically connected to the sixteenth pin of the DSP audio processor, and the other end is electrically connected to the twenty-seventh pin of the traditional BT Bluetooth chip, the twenty-seventh pin of the DSP audio processor is electrically connected to the IO matching circuit, one end of the third resistor is connected to the 1.8V power supply, and the other end is connected to the twenty-seventh pin of the DSP audio processor, one end of the second capacitor is grounded, and the other end is connected to the first Twenty-seventh pin, one end of the third capacitor is grounded, and the other end is connected to a 9V power supply. One end of the fourth resistor is connected to a 3.3V power supply, and the other end is connected to the seventh pin of the DSP audio processor. One end of the fifth resistor is connected to the fifth resistor, and the other end is connected to the sixth pin of the DSP audio processor. One end of the sixth resistor and the seventh resistor are both electrically connected to the microphone, and the other ends are respectively electrically connected to the first pin and the fortieth pin of the DSP audio processor. One end of the eighth resistor is electrically connected to the DSP upgrade socket, and the other end is connected to the thirty-seventh pin of the DSP audio processor. One end of the ninth resistor is connected to the thirty-sixth pin of the DSP audio processor, and the other end is connected to the microphone. One end of the tenth resistor is connected to the thirty-fifth pin of the DSP audio processor, and the other end is connected to the twenty-seventh pin of the traditional BT Bluetooth chip. One end of the eleventh resistor is connected to the thirty-fourth pin of the DSP audio processor, and the other end is connected to the twenty-eighth pin of the traditional BT Bluetooth chip.

[0007] Furthermore, the cascade detection circuit includes a MOS tube, a twelfth resistor, a thirteenth resistor and a diode. After the diode and the twelfth resistor are connected in series, one end is connected to the cascade output interface and the cascade input interface, and the other end is connected to the gate of the MOS tube. One end of the thirteenth resistor is connected to a 3.3V power supply, and the other end is connected to the drain of the MOS tube. The drain of the MOS tube is connected to the thirty-sixth pin of the traditional BT Bluetooth chip, and the source of the MOS tube is grounded.

[0008] Furthermore, the intelligent conference recorder also includes a storage module and an indicator light circuit, and the storage module and the indicator light circuit are electrically connected to the control circuit.

[0009] Furthermore; the audio processing circuit also includes an audio input interface, which is electrically connected to the microphone. The DSP audio processor is used to process the audio signal input by the traditional BT Bluetooth chip, BLE Bluetooth chip or audio input interface, and send the processed audio signal to the storage module.

[0010] Furthermore, the model of the BLE Bluetooth chip is BP1548.

[0011] Beneficial effects of the utility model:

[0012] This utility model provides an intelligent conference recorder that adds dual-mode Bluetooth and one-touch local recording functions to traditional conference recorders. It also supports ultra-long-distance recording. In actual use, it can be used in conjunction with client application software to simplify post-meeting document processing, such as conference content organization, translation, and summary. This can save staff workload, improve meeting efficiency, and save meeting costs. In addition, it supports one-touch sharing of meeting-related content, greatly improving work efficiency. This intelligent conference recorder is not only simple in structure and low in cost, but also easy to implement and promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of an intelligent conference recorder of the utility model;

[0014] Figure 2 This is a schematic diagram of the traditional BT Bluetooth chip in a smart conference recorder of this utility model;

[0015] Figure 3 This is a schematic diagram of the BLE Bluetooth chip in a smart conference recorder of this utility model;

[0016] Figure 4 This is a schematic diagram of the audio processing circuit in an intelligent conference recorder of the present utility model;

[0017] Figure 5 This is a schematic diagram of the DSP upgrade socket in an intelligent conference recorder of the present utility model;

[0018] Figure 6 This is a schematic diagram of a cascade detection circuit in an intelligent conference recorder of the present utility model;

[0019] Figure 7 This is a schematic diagram of the IO matching circuit in an intelligent conference recorder of the present utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0023] The utility model provides an intelligent conference recorder.

[0024] In the embodiment of the present utility model, Figure 1-7 As shown, the intelligent conference recorder includes a conference recorder outer shell, characterized in that a dual-mode Bluetooth module board, a power supply, a cascade output interface, a cascade input interface, a cascade detection circuit, an IO matching circuit, a recording key circuit and a DSP module board for encoding audio signals are installed in the conference recorder outer shell, the dual-mode Bluetooth module board is electrically connected to the power supply, a control circuit is provided on the dual-mode Bluetooth module board, the DSP module board is communicatively connected to the control circuit via I2C, the recording key circuit, the cascade output interface, the cascade input interface, the cascade detection circuit and the IO matching circuit are all electrically connected to the control circuit, the DSP module board is electrically connected to the power supply, and multiple groups of microphones are installed on the DSP module board.

[0025] In this embodiment, the dual-mode Bluetooth module board includes a traditional BT Bluetooth chip and a BLE Bluetooth chip. The traditional BT Bluetooth chip is connected to the BLE Bluetooth chip via I2C, and the BLE Bluetooth chip is connected to the DSP module board via I2C.

[0026] In this embodiment, the DSP module board is provided with an audio processing circuit and a DSP upgrade socket, and the audio processing circuit includes a DSP audio processor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a first capacitor, a second capacitor and a third capacitor, one end of the first resistor is connected to the fifteenth pin of the DSP audio processor, and the other end is connected to the power supply, one end of the first capacitor is grounded, and the other end is connected to the first resistor, one end of the second resistor is electrically connected to the sixteenth pin of the DSP audio processor, and the other end is electrically connected to the twenty-seventh pin of the traditional BT Bluetooth chip, the twenty-seventh pin of the DSP audio processor is electrically connected to the IO matching circuit, one end of the third resistor is connected to the 1.8V power supply, and the other end is connected to the twenty-seventh pin of the DSP audio processor, one end of the second capacitor is grounded, and the other end is connected to the The 27th pin, one end of the third capacitor is grounded, and the other end is connected to a 9V power supply. The fourth resistor has one end connected to a 3.3V power supply, and the other end is connected to the seventh pin of the DSP audio processor. The fifth resistor has one end connected to the fifth resistor, and the other end is connected to the sixth pin of the DSP audio processor. One end of each of the sixth and seventh resistors is electrically connected to the microphone, and the other ends are respectively electrically connected to the first and fortieth pins of the DSP audio processor. One end of the eighth resistor is electrically connected to the DSP upgrade socket, and the other end is connected to the thirty-seventh pin of the DSP audio processor. One end of the ninth resistor is connected to the thirty-sixth pin of the DSP audio processor, and the other end is connected to the microphone. One end of the tenth resistor is connected to the thirty-fifth pin of the DSP audio processor, and the other end is connected to the twenty-seventh pin of the traditional BT Bluetooth chip. One end of the eleventh resistor is connected to the thirty-fourth pin of the DSP audio processor, and the other end is connected to the twenty-eighth pin of the traditional BT Bluetooth chip.

[0027] In this embodiment, the cascade detection circuit includes a MOS transistor, a twelfth resistor, a thirteenth resistor, and a diode. After the diode and the twelfth resistor are connected in series, one end of the diode is connected to the cascade output interface and the cascade input interface, and the other end is connected to the gate of the MOS transistor. One end of the thirteenth resistor is connected to a 3.3V power supply, and the other end is connected to the drain of the MOS transistor. The drain of the MOS transistor is connected to the thirty-sixth pin of the traditional BT Bluetooth chip, and the source of the MOS transistor is grounded.

[0028] In this embodiment, the intelligent conference recorder further includes a storage module and an indicator light circuit, and the storage module and the indicator light circuit are both electrically connected to the control circuit.

[0029] In this embodiment, the audio processing circuit also includes an audio input interface, which is electrically connected to the microphone. The DSP audio processor is used to process the audio signal input by the traditional BT Bluetooth chip, BLE Bluetooth chip or audio input interface, and send the processed audio signal to the storage module.

[0030] In this embodiment, the model of the BLE Bluetooth chip is BP1548.

[0031] The intelligent conference recorder of this application has a one-key local recording function, and also supports ultra-long-distance recording (more than 10 meters), supports dual-mode Bluetooth, and also supports file transfer, device control, transcription, translation, meeting summary and other functions, supports one-key sharing of meeting content (audio, text, summary, etc.), supports encryption of recording files, supports device account binding and other functions. Through the built-in microphone and dual-mode Bluetooth module board, it can realize the functions of pickup and playback, dual-mode Bluetooth (which can transmit data, control instructions, and audio signals), one-key local recording, noise reduction, echo cancellation, voice enhancement, etc. In actual use, it can be used in conjunction with mobile phone and computer application software to realize real-time audio transcription, multi-language translation, meeting summary, etc., and can also share meeting audio, text, meeting summary and other materials with one click. Among them, the pickup and playback functions are traditional conference microphones. This conference recorder adds the necessary hardware configuration on its basis, and then combines relevant algorithms and client application software to realize more functions that are just needed for meetings and solve various application needs in meeting scenarios.

[0032] The workflow is as follows:

[0033] Through the built-in multiple groups of microphones to form a microphone array, traditional BT Bluetooth chip and BLE Bluetooth chip, after the sound is input from the microphone (microphone array) through the audio input interface, the audio processing circuit encodes the received audio signal, saves it into a file, and stores it in the storage module SDCARD (or memory flash), thus realizing the local recording function; at the same time, this smart conference recorder supports dual-mode Bluetooth, and while storing the recording file, transmits the audio signal to the mobile phone and computer through the traditional BT Bluetooth chip to realize the conference pickup function (traditional pickup function); while storing the recording file, the encoded audio stream is transmitted to the APP in real time through the BLE Bluetooth chip, and the APP encodes and decodes the audio signal stream, and then performs voice-to-text conversion to realize real-time translation in multiple languages, summarizes the meeting content with the help of large-scale artificial intelligence, assigns tasks according to the meeting content, etc. At the same time, it can realize one-click forwarding of meeting audio, meeting text, translation content and meeting summary.

[0034] At the same time, the DSP audio processor can add some encrypted information during encoding and save it in the recording file. Therefore, the files recorded by the smart conference recorder cannot be played directly through a general player, and can only be played or decrypted on a dedicated APP. Of course, the APP can be set to record as an encrypted file. This option will be hidden and will only be displayed through special methods. At the same time, in order for users to easily distinguish between encrypted and unencrypted files, the extension of encrypted files is capital letters, and the extension of unencrypted files is lowercase letters. In addition, the app adopts a management mode of binding accounts to devices. When using the device, the main account must agree to the authorization before the device can be used, and only the relevant files recorded by it can be viewed, and other files in the device cannot be viewed.

[0035] To provide a wider range of application scenarios, this smart conference recorder can be cascaded with devices in the conference room via wireless or wired means to build a more powerful system. The number of connected devices can be configured as needed, such as expanding the speaker volume and microphone array, to meet the needs of conference rooms of different sizes. Cascaded devices can be connected in series, ring, star, or tree configurations. To solve the problem of audio synchronization between devices, the smart conference recorder generates a synchronous clock and transmits it to the connected devices via broadcast. These devices perform audio processing locally, perform synchronization verification based on the synchronous clock signal, and finally transmit the audio to the smart conference recorder. The audio received by the smart conference recorder is also synchronized and played through the speaker, thus solving the problem of audio asynchrony between devices.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An intelligent conference recorder, comprising a conference recorder outer shell, characterized in that: A dual-mode Bluetooth module board, a power supply, a cascade output interface, a cascade input interface, a cascade detection circuit, an IO matching circuit, a recording key circuit and a DSP module board for encoding audio signals are installed in the outer shell of the conference recorder. The dual-mode Bluetooth module board is electrically connected to the power supply. A control circuit is provided on the dual-mode Bluetooth module board. The DSP module board is communicatively connected to the control circuit via I2C. The recording key circuit, cascade output interface, cascade input interface, cascade detection circuit and IO matching circuit are all electrically connected to the control circuit. The DSP module board is electrically connected to the power supply. Multiple groups of microphones are installed on the DSP module board.

2. The intelligent conference recorder according to claim 1, characterized in that: The dual-mode Bluetooth module board includes a traditional BT Bluetooth chip and a BLE Bluetooth chip. The traditional BT Bluetooth chip is connected to the BLE Bluetooth chip through I2C communication, and the BLE Bluetooth chip is connected to the DSP module board through I2C communication.

3. The intelligent conference recorder according to claim 2, characterized in that: The DSP module board is provided with an audio processing circuit and a DSP upgrade socket, the audio processing circuit includes a DSP audio processor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a first capacitor, a second capacitor and a third capacitor, one end of the first resistor is connected to the fifteenth pin of the DSP audio processor, and the other end is connected to the power supply, one end of the first capacitor is grounded, and the other end is connected to the first resistor, one end of the second resistor is electrically connected to the sixteenth pin of the DSP audio processor, and the other end is electrically connected to the twenty-seventh pin of the traditional BT Bluetooth chip, the twenty-seventh pin of the DSP audio processor is electrically connected to the IO matching circuit, one end of the third resistor is connected to the 1.8V power supply, and the other end is connected to the twenty-seventh pin of the DSP audio processor, one end of the second capacitor is grounded, and the other end is connected to the twenty-seventh pin of the DSP audio processor. pin, one end of the third capacitor is grounded, and the other end is connected to a 9V power supply. One end of the fourth resistor is connected to a 3.3V power supply, and the other end is connected to the seventh pin of the DSP audio processor. One end of the fifth resistor is connected to the fifth resistor, and the other end is connected to the sixth pin of the DSP audio processor. One end of the sixth resistor and the seventh resistor are both electrically connected to the microphone, and the other ends are respectively electrically connected to the first pin and the fortieth pin of the DSP audio processor. One end of the eighth resistor is electrically connected to the DSP upgrade socket, and the other end is connected to the thirty-seventh pin of the DSP audio processor. One end of the ninth resistor is connected to the thirty-sixth pin of the DSP audio processor, and the other end is connected to the microphone. One end of the tenth resistor is connected to the thirty-fifth pin of the DSP audio processor, and the other end is connected to the twenty-seventh pin of the traditional BT Bluetooth chip. One end of the eleventh resistor is connected to the thirty-fourth pin of the DSP audio processor, and the other end is connected to the twenty-eighth pin of the traditional BT Bluetooth chip.

4. The intelligent conference recorder according to claim 3, characterized in that: The cascade detection circuit includes a MOS tube, a twelfth resistor, a thirteenth resistor and a diode. After the diode and the twelfth resistor are connected in series, one end of the diode is connected to the cascade output interface and the cascade input interface, and the other end is connected to the gate of the MOS tube. One end of the thirteenth resistor is connected to a 3.3V power supply, and the other end is connected to the drain of the MOS tube. The drain of the MOS tube is connected to the thirty-sixth pin of the traditional BT Bluetooth chip, and the source of the MOS tube is grounded.

5. The intelligent conference recorder according to claim 3, characterized in that: The intelligent conference recorder also includes a storage module and an indicator light circuit, and the storage module and the indicator light circuit are both electrically connected to the control circuit.

6. The intelligent conference recorder according to claim 5, characterized in that: The audio processing circuit also includes an audio input interface, which is electrically connected to the microphone. The DSP audio processor is used to process the audio signal input by the traditional BT Bluetooth chip, BLE Bluetooth chip or audio input interface, and send the processed audio signal to the storage module.

7. The intelligent conference recorder according to claim 6, characterized in that: The model of the BLE Bluetooth chip is BP1548.

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