All-digital full-duplex hand-free telephone system used for hotel guest room

Abstract

The utility model relates to the technical field of all-digital full-duplex hands-free telephones, and discloses an all-digital full-duplex hands-free telephone system for hotel rooms, which comprises a CPU (central processing unit) module for controlling full-duplex communication and signal processing of the system; the audio processing module is connected with the CPU module and is used for realizing encoding and decoding, echo cancellation and noise suppression of digital audio signals; the microphone and the loudspeaker output are respectively connected with the audio processing module and are used for acquiring voice signals of a user and outputting call sound; the power amplifier chip module is connected with the loudspeaker output and is used for amplifying the audio signal; the recovery circuit module is connected with the audio processing module and the power amplifier chip module, and is used for collecting loudspeaker output signals in real time and feeding back the signals to the audio processing module to eliminate echoes; the network PHY chip and the RJ45 network port seat are connected with the CPU module and are used for realizing all-digital signal transmission through the Ethernet; and a power circuit module. The mobile phone provided by the utility model has remarkable advantages in the aspects of call quality, functional diversity and user experience.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of full -digital full -duplex hands -free telephone, concretely is a full -digital full -duplex hands -free telephone system for hotel guest room uses. BACKGROUND

[0002] Traditional telephone systems mostly use analog signal transmission and are half-duplex mode. This means that during a conversation, both parties cannot talk at the same time, and one party can only listen when the other party talks, resulting in low communication efficiency.

[0003] Poor call quality: due to the interference of analog signals, noise or distortion often accompanies the conversation.

[0004] Single function: only basic voice communication can be achieved, which cannot meet the needs of modern users for diversified functions.

[0005] Traditional hands-free phone: although it frees the user's hands, it still has many problems.

[0006] Echo problem: the sound played by the loudspeaker will be re-collected by the microphone, causing echo interference and affecting the call experience.

[0007] Noise problem: environmental noise is easily picked up by the microphone, further reducing call quality.

[0008] Limited function: traditional hands-free phones only support basic voice communication and lack intelligent functions.

[0009] Therefore, based on the above technical problems, it is necessary for those skilled in the art to develop a full-digital full-duplex hands-free telephone system for hotel guest rooms. UTILITY MODEL CONTENT

[0010] The utility model aims to provide a full-digital full-duplex hands-free telephone system for hotel guest rooms to solve the problems raised in the background art.

[0011] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0012] A full-digital full-duplex hands-free telephone system for hotel guest rooms technical scheme, comprising:

[0013] A CPU module for controlling full-duplex communication and signal processing of the system;

[0014] An audio processing module connected to the CPU module for realizing digital audio signal encoding and decoding, echo cancellation and noise suppression;

[0015] A microphone and a loudspeaker output connected to the audio processing module respectively for collecting user voice signals and outputting call sounds;

[0016] A power amplifier chip module is connected to the loudspeaker output for amplifying audio signals;

[0017] A echo cancellation circuit module is connected to the audio processing module and the power amplifier chip module for collecting loudspeaker output signals in real time and feeding back to the audio processing module for eliminating echo;

[0018] A network PHY chip and an RJ45 network port are connected to the CPU module for realizing full-digital signal transmission through Ethernet;

[0019] A power supply circuit module supplies power to each module of the system.

[0020] As a preferred technical solution, the audio processing module integrates an adaptive filtering algorithm for dynamically suppressing environmental noise and eliminating echo interference in conversation.

[0021] As a preferred technical solution, the echo cancellation circuit module includes a high-precision analog-to-digital converter for collecting loudspeaker output signals in real time and converting them into digital feedback signals input to the audio processing module.

[0022] As a preferred technical solution, the network PHY chip supports full-duplex communication based on IP protocol and is connected to a hotel LAN through the RJ45 network port to realize low-delay transmission of voice data.

[0023] As a preferred technical solution, the power supply circuit module includes multi-stage voltage stabilizing circuits for providing independent and stable power supply voltages for the CPU module, the audio processing module and the power amplifier chip module.

[0024] Compared with the prior art, the full-digital full-duplex hands-free telephone system for hotel rooms has the following advantages:

[0025] The full-digital full-duplex hands-free telephone system for hotel rooms realizes full-duplex communication through digital signal processing technology, allowing both parties to talk and listen at the same time, and significantly improves communication efficiency. The audio processing module uses an adaptive filtering algorithm to effectively suppress environmental noise and eliminate echo, improving call quality. The echo cancellation circuit module uses a high-precision analog-to-digital converter to collect loudspeaker output signals in real time, further optimizing the echo cancellation effect. The network PHY chip supports communication based on IP protocol, ensuring low-delay transmission of voice data. The multi-stage voltage stabilizing circuits of the power supply circuit module provide stable and reliable power supply for each module of the system. Compared with the traditional half-duplex telephone system using analog signal transmission, the full-digital full-duplex hands-free telephone system for hotel rooms has significant advantages in call quality, functional diversity and user experience. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a module schematic diagram of a full-digital full-duplex hands-free telephone system for hotel rooms.

[0027] Figure 2 CPU module circuit schematic diagram of a full-digital full-duplex hands-free telephone system for hotel room use;

[0028] Figure 3 Power supply schematic diagram of a full-digital full-duplex hands-free telephone system for hotel room use;

[0029] Figure 4 Network PHY chip circuit schematic diagram of a full-digital full-duplex hands-free telephone system for hotel room use;

[0030] Figure 5 Microphone and audio circuit schematic diagram of a full-digital full-duplex hands-free telephone system for hotel room use;

[0031] Figure 6 Power amplifier chip circuit schematic diagram of a full-digital full-duplex hands-free telephone system for hotel room use;

[0032] Figure 7 Back sampling circuit schematic diagram of a full-digital full-duplex hands-free telephone system for hotel room use.

[0033] In the drawing, 1, CPU module; 2, power supply circuit module; 3, audio processing module; 4, microphone; 5, power amplifier chip module; 6, loudspeaker output; 7, back sampling circuit module; 8, network PHY chip; 9, RJ45 network port seat. DETAILED DESCRIPTION

[0034] The features and exemplary embodiments of each aspect of the present application will be described in detail below, in order to make the purpose, technical scheme and advantages of the present application more clear and apparent, the present application will be further described in detail below in combination with the drawings and specific embodiments. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0035] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , the present application provides a full-digital full-duplex hands-free telephone system for hotel room use technical scheme: comprising:

[0036] CPU module 1: this module is the core control unit of the system, responsible for processing full-duplex communication protocol, executing signal processing algorithm, and coordinating the work of other modules.

[0037] Audio processing module 3: This module is connected to CPU module 1 and is responsible for the encoding and decoding of digital audio signals, echo cancellation, and noise suppression. The audio processing module 3 integrates adaptive filtering algorithms that can dynamically suppress environmental noise and eliminate echo interference during conversations.

[0038] Microphone 4 and loudspeaker output 6: The microphone 4 is used to collect the user's voice signal, while the loudspeaker output 6 is used to output the conversation sound. These two components are respectively connected to the audio processing module 3.

[0039] Power amplifier chip module 5: This module is connected to the loudspeaker output 6 and is used to amplify the audio signal, ensuring the clarity and sufficient volume of the conversation sound.

[0040] Back sampling circuit module 7: This module is connected to the audio processing module 3 and the power amplifier chip module 5, used to collect the loudspeaker output signal in real time, and convert the analog signal into a digital feedback signal input to the audio processing module 3 to eliminate echo.

[0041] Network PHY chip 8 and RJ45 network port seat 9: The network PHY chip 8 is connected to the CPU module 1, supporting full-duplex communication based on the IP protocol, and is connected to the hotel local area network through the RJ45 network port seat 9, realizing low-delay transmission of voice data.

[0042] Power supply circuit module 2: This module provides power supply for each module of the system, including multi-stage voltage stabilizing circuit, providing independent stable power supply voltage for CPU module 1, audio processing module 3 and power amplifier chip module 5.

[0043] In specific implementation, the audio processing module 3 can use high-performance digital signal processor DSP to realize complex audio processing algorithms. The microphone 4 and loudspeaker output 6 should be selected with high sensitivity and high fidelity devices to ensure the quality of the conversation. The power amplifier chip module 5 should have sufficient power output to drive the loudspeaker output 6 to produce clear conversation sound. The high-precision analog-to-digital converter ADC in the back sampling circuit module 7 should have fast sampling rate and high resolution to ensure the accuracy of echo cancellation effect.

[0044] The network PHY chip 8 should select the chip that supports high-speed Ethernet communication to ensure the stability and low delay of voice data transmission. The RJ45 network port seat 9 serves as the physical connection interface to ensure stable connection with the hotel local area network.

[0045] The design of the power supply circuit module 2 should ensure that the system can obtain stable power supply under various working conditions, avoiding system instability or damage caused by power fluctuations.

[0046] In summary, the full digital full duplex hands-free telephone system used in hotel guest rooms of the utility model, through adopting advanced digital signal processing technology and full duplex communication protocol, the call quality and user experience are remarkably improved, meanwhile, rich functions and good stability are provided, and the demand of modern hotel guest rooms for telephone system is met.

[0047] The working principle and use process of the utility model are as follows: after the components of the scheme are sequentially assembled, the above-mentioned each embodiment is sequentially used according to actual demand, and then all work steps can be completed.

[0048] The above-mentioned is only a preferable specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all of them should be covered in the protection scope of the utility model.

[0049] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0050] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connection", "fixing", "threading" and the like should be understood in a broad sense, for example, can be fixed connection, or can be detachable connection, or can be integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication or interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms in the utility model can be understood according to the specific meaning of the specific situation by the person skilled in the art.

[0051] According to the above embodiments of the utility model, these embodiments do not describe all the details, and the utility model is not limited to the specific embodiments. Obviously, according to the above description, many modifications and changes can be made. The embodiments are selected and described in the specification in order to better explain the principles and practical application of the utility model, so that the person skilled in the art can well utilize the utility model and make modifications and use on the basis of the utility model. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A fully digital, full-duplex, hands-free telephone system for use in hotel rooms, characterized in that, include: CPU module (1) is used for full-duplex communication and signal processing of the control system; The audio processing module (3) is connected to the CPU module (1) and is used to encode and decode digital audio signals, cancel echoes and suppress noise. The microphone (4) and speaker output (6) are respectively connected to the audio processing module (3) for collecting user voice signals and outputting call sound; The power amplifier chip module (5) is connected to the speaker output (6) and is used to amplify the audio signal; The echo acquisition circuit module (7) is connected to the audio processing module (3) and the power amplifier chip module (5) and is used to acquire the speaker output signal in real time and feed it back to the audio processing module (3) to eliminate echo; The network PHY chip (8) and RJ45 port socket (9) are connected to the CPU module (1) and are used to realize full digital signal transmission via Ethernet; The power supply circuit module (2) supplies power to all modules of the system.

2. The fully digital full-duplex hands-free telephone system for use in hotel rooms according to claim 1, characterized in that: The audio processing module (3) integrates an adaptive filtering algorithm to dynamically suppress environmental noise and eliminate echo interference during calls.

3. The fully digital full-duplex hands-free telephone system for hotel rooms according to claim 1, characterized in that: The sampling circuit module (7) includes a high-precision analog-to-digital converter, which is used to collect the speaker output signal in real time and convert it into a digital feedback signal to be input to the audio processing module (3).

4. The fully digital full-duplex hands-free telephone system for use in hotel rooms according to claim 1, characterized in that: The network PHY chip (8) supports full-duplex communication based on the IP protocol and connects to the hotel's local area network through the RJ45 network port (9) to achieve low-latency transmission of voice data.

5. A fully digital, full-duplex, hands-free telephone system for use in hotel rooms according to claim 1, characterized in that: The power supply circuit module (2) includes a multi-stage voltage regulator circuit, which provides independent and stable power supply voltages for the CPU module (1), the audio processing module (3) and the power amplifier chip module (5).

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