CN100433753C - A videophone terminal - Google Patents

Abstract

A videophone terminal, including: a main processing module to realize data interaction with Ethernet, audio and video collection and playback, and automatic conversion from voice calls to video calls; an image collection module to realize CMOS camera and client video signal acquisition and processing; display module, realize video signal input by Ethernet, output to TV through video port, and LCD display; system storage module, provide external data storage space and provide program storage space; audio processing module, realize MIC Data collection of audio data input, and output audio data; telephone module, realizes the function of ordinary telephone, and realizes the function of videophone under the control of the main processing module; network module, provides the ability of routing analysis for incoming and outgoing data, and realizes ADSL signaling Conversion to Ethernet signaling. The invention adapts to the complex application environment in which different access service providers provide network access services, and enables more users to realize interconnection and visual communication under different network access conditions.

Description

A videophone terminal

technical field

The present invention relates to a kind of video telephone terminal, it can access multiple networks, and through them access broadband Internet network (such as Internet Internet) based on IP (Internet Protocol), through the broadband Internet network (such as Internet Internet) based on IP network) to interconnect with other videophone terminals for video calls.

Background technique

As a basic tool for people to communicate, the telephone has already entered thousands of households. In recent years, with the development of broadband technology and the popularization of the application of IP-based broadband Internet (such as Internet network), people have begun to try to use the network to conduct video calls in order to enrich the communication methods between people and improve the quality of communication. In recent years, we have also seen various forms of videophone terminal products manufactured by some manufacturers, and some users have also enjoyed the brand-new experience brought by videophone through these devices.

However, there are also some problems in the application of the videophone terminal. From the perspective of user application, videophone products should be subordinate to telephone products. It is an advanced telephone terminal that expands the functions of the original telephone products and enables people to improve communication quality and enrich communication means. However, as the nature of the exchange has not changed, neither has perception of the business changed significantly. This requires that the user's cognition and usage habits of traditional phones should be extended as much as possible in product design. From the perspective of product technology, traditional telephones basically work on the PSTN (Public Switched Telephone Network) network, but the PSTN network cannot support video call applications very well. The reason is that: PSTN is a narrowband network, which cannot Supports a large amount of data that needs to be transmitted in video calls. This objectively requires the application of visual communication through another broadband network.

Due to the requirements of technological development at this stage, most of the visual communication services are based on IP communication technology, and are carried out through broadband Internet networks (such as Internet networks). However, most of the ways for users to access the broadband Internet network are through the access service network provided by the broadband Internet (such as the Internet) access service provider. Since different access service providers provide different access methods, Therefore, a videophone that only adapts to one access method is difficult to meet the needs of various users, and it is also difficult to realize intercommunication between videophone terminals.

Contents of the invention

The purpose of the present invention is to provide a videophone terminal, which is used to adapt to the complex application environment where network access services are provided by different access service providers, so that as many users as possible can realize interconnection under different network access conditions. , and make a video call.

A videophone terminal provided by the present invention is characterized in that it comprises a main processing module and a telephone module connected to the main processing module, a network module, an image acquisition module, a display module, an audio processing module and a system storage module, The telephone module is connected to the network module, wherein: the main processing module realizes the data interaction with the Ethernet, the collection and playback of audio and video, and when it is necessary to switch from a voice call to a video call, the two parties first transmit the information based on the PSTN link. The address and data information required by the broadband Internet network for video calls, and the video phone terminals of the calling parties establish a video phone connection through the broadband Internet network according to the obtained information, so as to realize the automatic conversion from voice calls to video calls; The image acquisition module realizes the signal acquisition and processing of the CMOS (complementary metal oxide semiconductor) camera and the user-end video; the display module realizes the video signal input by the Ethernet, and outputs it to the TV (television) through the video port for playback, and the LCD ( LCD) display; system storage module, including two kinds of SDRAM (synchronous dynamic memory) and FLASH (flash memory) memory, SDRAM provides external data storage space, FLASH provides program storage space; audio processing module, realizes MIC (Mike) audio data input Data collection, and output audio data; telephone module, realizes the function of ordinary telephone, and realizes the function of videophone under the control of the main processing module; network module, provides the routing analysis ability of the incoming and outgoing data, and automatically distinguishes the destination address of data transmission, It includes an ADSL (asymmetrical digital subscriber loop) routing module and an Ethernet switching module connected to it to realize the conversion from ADSL signaling to Ethernet signaling.

In the videophone terminal mentioned above, the ADSL routing module shares an input port with the PSTN network, and the Ethernet switching module provides four bidirectional Ethernet interfaces.

Adopt above-mentioned technical scheme, the present invention can access PSTN network, DSL (Digital Subscriber Loop) network, standard Ethernet, can carry out voice call based on PSTN, also can carry out IP visual call based on DSL or Ethernet network, and can Automatically switch from voice call state to video call state. In addition, videophones can also provide some of the main functions of devices such as DSL modems, Ethernet switches, routers, and proxy servers. Provide RJ11 and Ethernet interface to facilitate access to different networks. The present invention reduces other supporting equipment required by users in the past, reduces the hardware equipment cost investment required for the application of the videophone service, and provides more functions.

Description of drawings

FIG. 1 is a block diagram illustrating the overall structure of a videophone according to an embodiment of the present invention.

FIG. 2 is a functional block diagram illustrating a network module of a videophone according to an embodiment of the present invention.

Fig. 3 is a flow chart illustrating the implementation of a videophone call by switching from a PSTN network to a DSL or Ethernet network according to an embodiment of the present invention.

Detailed ways

The invention provides three kinds of network interfaces, which are respectively PSTN interface, DSL interface and standard Ethernet interface, and supports simultaneous access and application of the interfaces. Users can apply the present invention to carry out traditional telephone services, using the same way as traditional telephones, and can also automatically switch from simple voice calls to video calls. At this time, the involved networks are switched by the present invention Products are auto-completed. The present invention also covers all or main functions of many products in application, and the products involved are listed below:

standard telephone

Standard videophone (based on IP network)

DSL modem

ethernet switch

small proxy server

small router

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples of implementation.

As shown in Figure 1, the embodiment of the present invention is mainly made up of seven modules: telephone module 1, network module 2, main processing module 3, image acquisition module 4, display module 5, audio processing module 6 and system storage module 7.

Main processing module 3: Realize data interaction with Ethernet, audio and video collection and playback, when it is necessary to switch from voice call to video call, first pass the PSTN link to the video call between the two parties based on the broadband Internet network address and data information. According to the information obtained, the videophone terminals of both parties on the call establish a videophone connection through the broadband Internet network, thereby realizing the automatic conversion from voice call to video call.

Image acquisition module 4: realize signal acquisition and processing of CMOS camera and client video.

Display module 5: realize the video signal input by Ethernet, output to TV for playback through the video port, and LCD display.

System storage module 7: composed of SDRAM and FLASH memory. SDRAM provides external data storage space, and FLASH provides program storage space.

Audio processing module 6: realize data collection of MIC audio data input, and output audio data to the speaker.

Telephone module 1: Realize the functions of ordinary telephones, mainly including off-hook, dialing, busy, connecting, talking, hanging up, hands-free, ringing, redialing, HOLD (hold), MUTE (mute), caller ID, time Display, etc., and realize the videophone function under the control of the main processing module.

Network module 2: The network module provides 4 RJ45 Ethernet interfaces, and realizes the conversion from ADSL signaling to Ethernet signaling.

As shown in FIG. 2 , the network module of the present invention is composed of two submodules: an ADSL routing module 21 and an Ethernet switching module 22 . Wherein the ADSL routing module 21 and the PSTN network share an RJ11 port as an input, and there is a data transmission path between it and the Ethernet switching module 22 . When the user's access line is an ADSL network line, according to the characteristics of the ADSL line, the network module 2 connects signals to two modules: the telephone module 1 and the ADSL routing module 21 . The original signal is distributed to the telephone module 1, and the telephone module 1 uses it as the network path of the voice telephone service part; the ADSL routing module 21 first modulates and demodulates the input and output signals so as to comply with the DSL specification (this process is the same as a standard ADSL modem) , and then exchange data with the Ethernet switching module 22 through the data channel.

The Ethernet switch module 22 and the ADSL routing module 21 and the main processor module 3 all maintain data channels, and also provide four-way bidirectional Ethernet interfaces (RJ45), and one of them can be assigned to a broadband internet network (such as the Internet) to access The service provider is used as an access port, and the other three are provided to other standard Ethernet devices. All four ports can also be provided to standard Ethernet devices.

The Ethernet switching module provides a data exchange mechanism inside, which is responsible for exchanging data from ports to channels, and can also exchange data between ports. At this time, for standard Ethernet devices connected to Ethernet ports, the Ethernet module Equivalent to an Ethernet switch.

The network module 2 provides the ability to analyze the route of the incoming and outgoing data, that is to say, the network module 2 will automatically distinguish the destination address of the data transmission, whether it is transmitted to a standard device under a certain Ethernet port, or to the main processing module, or to the external Broadband access terminal (if it is ADSL access, the signal will be modulated by ADSL module).

Among them, the connection methods through the network module 2 are as follows:

●The RJ11 port is connected to the PSTN network, and the four RJ45 ports are free. At this point the invention is used as a standard telephone.

●The RJ11 port is connected to the ADSL network, and the four-way RJ45 can be connected to the standard Ethernet equipment arbitrarily. At this time, the present invention can be used as a standard telephone, or directly dial a standard IP address, and be used as a standard videophone. If the counterparty of the conversation is also the telephone terminal of the present invention, both parties can automatically switch from the voice conversation state to the visual conversation state through a negotiation mechanism (see the accompanying description of FIG. 3 for specific methods). The Ethernet devices connected to the four RJ45 ports can exchange data with each other, and can also exchange data with devices on the INTERNET network through the ADSL network. In this connection mode, the present invention can realize the main functions of standard telephone set, standard videophone set, ADSL modem, Ethernet switch, small proxy server, small router and other equipment.

●RJ11 port is connected to PSTN network, one RJ45 port is connected to broadband Internet network (such as Internet network) to connect to the Ethernet network provided by the service provider, and the other three ports can be connected to standard Ethernet equipment at will. At this moment, the present invention can be used as a standard telephone, and can also directly dial a standard IP address, and be used as a standard videophone. If the counterparty of the conversation is also the telephone terminal of the present invention, both parties can automatically switch from the voice conversation state to the visual conversation state through a negotiation mechanism (see the accompanying description of FIG. 3 for specific methods). Ethernet devices connected to the three RJ45 ports can exchange data with each other, and can also exchange data with devices on the broadband Internet (such as the Internet) through another RJ45 port.

●The RJ11 port is free, one RJ45 port is connected to the broadband Internet (such as the Internet network) to connect to the Ethernet network provided by the service provider, and the other three ports can be connected to standard Ethernet devices arbitrarily. At this moment, the present invention can directly dial the standard IP address, and use it as a standard videophone. Ethernet devices connected to the three RJ45 ports can exchange data with each other, and can also exchange data with devices on the broadband Internet (such as the Internet) through another RJ45 port.

●The RJ11 port is free, and the four RJ45 ports can be freely connected to standard Ethernet devices. At this time, the present invention can be used as a network switch, and the Ethernet devices connected to the four RJ45 ports can realize mutual data exchange.

As shown in Figure 3, when the present invention simultaneously accesses PSTN and IP-based broadband Internet (such as Internet network) (the second and three situations in the above-mentioned connection mode), the present invention can automatically switch to broadband Internet from PSTN network to enable the transition from voice telephony to video telephony. This is to integrate the PSTN network and the broadband Internet network accessed through the broadband operator's access service in the videophone terminal. Before the video call connection is established, the PSTN connection is established first, and then transmitted on the PSTN link. The address and data information required by both parties for visual communication based on broadband internet. After the verification of the information obtained by both parties, the calling party initiates a request through the broadband Internet to establish a connection with the called party, thereby realizing the call establishment system of the videophone and implementing the normal call function.

The present invention has many practical purposes and applications, and provides a simple and convenient way of using the videophone for individual families, users of enterprises and institutions, and public service departments. The invention enables the videophone service to be close to the user's application and meets the demand of mass consumption. The remarkable change that the present invention brings to videophone service is as follows:

●Enabling more users using different networks to utilize the present invention as a videophone.

●Provide multiple functional applications, so that the present invention is not only a tool for talking, but also can be used as a network intermediate device for home network applications.

●Provide automatic switching from PSTN voice call status to video call based on broadband Internet network (such as Internet network), which greatly facilitates the use of users and enables users to access broadband Internet networks (such as Internet network) through different networks Users of the present invention can communicate with each other.

●The multi-device function integration of the present invention objectively reduces the user's capital and maintenance costs, and greatly promotes the operator's provision of videophone services.

Claims (2)

1. A videophone terminal, characterized in that: comprise a main processing module and a telephone module, a network module, an image acquisition module, a display module, an audio processing module and a system storage module that are connected to each other with the main processing module, the telephone The module is connected to the network module, where: The main processing module realizes the data interaction with Ethernet, the collection and playback of audio and video, and when it is necessary to switch from a voice call to a video call, the address required for the video call between the two parties based on the broadband Internet is transmitted through the PSTN link. and data information, the videophone terminals of both parties call based on the obtained information, establish a videophone connection through the broadband Internet network, so as to realize the automatic conversion from voice call to video call; The image acquisition module realizes signal acquisition and processing of complementary metal oxide semiconductor CMOS camera and user-side video; The display module realizes that the video signal input from Ethernet is output to TV and LCD for display through the video port; System storage module, including SDRAM and FLASH memory, SDRAM provides external data storage space, FLASH provides program storage space; The audio processing module realizes data acquisition of MIC audio data input and outputs audio data; The telephone module realizes the function of an ordinary telephone, and realizes the function of a videophone under the control of the main processing module; The network module provides the ability to analyze the route of the incoming and outgoing data, automatically distinguishes the destination address of the data transmission, includes the ADSL routing module and the Ethernet switching module connected to it, and realizes the conversion from ADSL signaling to Ethernet signaling. 2. A videophone terminal according to claim 1, wherein the ADSL routing module shares an input port with the PSTN network, and the Ethernet switching module provides four bidirectional Ethernet interfaces.

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