WO2010139211A1

WO2010139211A1 - Video telephone, method for dialing and answering video telephone and device thereof

Info

Publication number: WO2010139211A1
Application number: PCT/CN2010/072016
Authority: WO
Inventors: 齐迅
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-06-04
Filing date: 2010-04-21
Publication date: 2010-12-09
Also published as: CN101610380A

Abstract

A video telephone, method for dialing and answering video telephone and device thereof are provided. A data terminal device and an application device, such as PC and a mobile terminal, are connected with each other. The application device with higher standard configuration is utilized to realize the communication of the visual telephone. Not only the quality of the communication is improved, but also the quality of the video image is improved, and the video image size is increased, so as to improve the experience of the user visual calling.

Description

The present invention relates to the field of communications, and in particular, to a method and apparatus for dialing and answering a videophone and a videophone. BACKGROUND OF THE INVENTION As a communication tool that is indispensable in daily life and work, telephones are widely used for their convenience and speed, but ordinary telephones can only provide voice communication services. Videophones enable people to not only hear each other's voices while on the phone, but also to see each other's images. It is not only suitable for family life, but also can be widely used in various fields of various industries such as business activities, distance learning, confidentiality monitoring, hospital care, medical diagnosis, scientific investigation, etc., and thus has broad market prospects.

In the late 1980s, with the continuous development of communication, computer, voice and video codec technology, videophones have developed rapidly in countries around the world. In order to achieve interoperability and promote the development of video telephony and video conferencing systems, the International Telecommunication Union-Telecommunication Standardization Sector (ITU-T) introduced H.310 and H.320 in the 1990s. , a series of multimedia communication standards for H.321, H.322, H.323 and H.324.

With the development of modern communication technologies, multimedia communication has become a new business need. Among them, the mobile multimedia videophone service realizes the comprehensive processing of various media such as audio, video, data (text, graphic, etc.), so that users in different locations can perform real-time audio and video communication, and more and more People are concerned. In the actual development of the third generation mobile communication system (3G, 3nd Generation Mobile Telecommunications), the conditions for developing videophone services are already available. Some operators have already launched videophone services, such as broadband code division multiple access. WCDMA (WCDMA, Wideband Code Division Multiple Access) circuit domain video telephony service, Evolution Data Optimized (PP-DO), packet domain video telephony service, time division synchronous code division multiple access (TD-SCDMA, Time Division-Synchronized CDMA) Videophone service in the circuit domain.

At present, in 3G environment, videophones can be made through 3G mobile phones. However, there are some problems that are limited by the specifications of 3G mobile phones. For example, the size of video images is limited by the screen size of mobile phones, and the video pixels of cameras are too low. Poor quality, etc., which affects the user's experience. Summary of the invention

The present invention is directed to the problem of using a 3G mobile phone to make a videophone limited by the specifications of the mobile phone itself, and proposes a method and device for dialing and answering a videophone and a videophone.

In order to achieve the above object, the technical solution of the present invention is implemented as follows:

The present invention provides a videophone, including a dialing device and an answering device, wherein: the dialing device includes a first application device and a first data terminal device, where: the first application device includes a first video codec module The receiving device includes a second application device and a second data terminal device, where: the second application device includes a second video codec module, and the first data terminal device is configured to receive from the answering device The called video coding result is sent to the first video codec module, and is further configured to send the video coding result of the calling party from the first video codec module to the answering device;

The first video codec module is configured to: decode the video encoding result of the called device, and display the video decoding result on an application interface of the first application device; and further, receive the first The video data of the calling party acquired by the application device is encoded, and the video encoding result of the calling party is sent to the receiving device by using the first data terminal device;

The second data terminal device is configured to receive a video coding result of the calling party from the dialing device, and send the result to the second video codec module, and is further configured to: send the called party from the second video codec module The video encoding result is sent to the dialing device; The second video codec module is configured to decode the video encoding result of the calling party, and display the video decoding result on an application interface of the second application device; and further, receive the second The called video data acquired by the application device is encoded, and the called video encoding result is sent to the dialing device by the second data terminal device.

Further, the first application device further includes: a first control instruction generation and parsing module, configured to send an instruction to the first data terminal device, and send a caller and/or to the first data terminal device The channel service type, data rate, and connection unit used when receiving the video coding result of the called party are pre-set;

The second application device further includes: a second control instruction generation and parsing module, configured to send an instruction to the second data terminal device, and receive the calling and/or send the called party to the second data terminal device The channel service type, data rate, and connection unit used in the video coding result are preset.

Further, the first application device further includes: a dialing module, configured to determine that the current network environment is suitable for dialing a videophone, and determine that the called number is valid, and call the called number; When the number is called, the call instruction is sent by the first control instruction generation and parsing module to the answering device by the first data terminal device;

The second application device further includes: an incoming call detecting module and an incoming call type determining module, where: the incoming call detecting module is configured to receive, by the second control instruction generating and parsing module, the second data terminal device The instruction sent by the dialing device is parsed to determine that the instruction is an incoming call instruction, and the call type determining module is triggered;

The call type determining module is configured to determine, according to the incoming call instruction, that the incoming call is a normal voice call or a video call, and display an incoming call number and a call type on an application interface of the second application device, prompting the called party to answer the main Called.

Further, the first application device further includes: a first multimedia processing module, configured to be used by the calling and the called party on the application interface of the first application device when performing a videophone call The called video image is saved, intercepted, paused or played;

The second application device further includes: a second multimedia processing module, configured to: when the calling party and the called party perform the videophone, save the calling video image on the application interface of the second application device , intercept, pause, or play.

Further, the first application device is a first personal computer (PC) with a camera or a first mobile terminal device with a videophone;

The second application device is a second pc with a camera or a second mobile terminal device with a videophone.

The invention also provides a method for dialing a videophone, the method comprising:

The first application device establishes a connection with the first data terminal device, and initializes the first video encoding and decoding module;

The first application device dials the called number, and after the called party answers, the first application device transmits the video data of the calling party acquired by its own camera to the first video codec module, and performs coding. And transmitting, by the first data terminal device, the video encoding result of the calling party to the called party;

Receiving, by the first data terminal device, a video coding result from the called party, transmitting the called video coding result to the first video codec module, performing decoding, and presenting the video decoding result in the The application interface of the first application device.

Further, before the first application device dials the called number, the method further includes: the first application device sends a command to the first data terminal device by using a first control instruction generation and parsing module, The channel service type, the data rate, and the connection unit used by the first data terminal device when transmitting the calling and/or receiving the called video coding result are pre-set.

The invention also provides a method for answering a videophone, the method comprising:

The second application device establishes a connection with the second data terminal device, and starts the second video coding and decoding module. Piece;

After the second application device answers the call of the calling party, the second data terminal device receives the video coding result from the calling party, and sends the result to the second video codec module, performs decoding, and decodes the video. The result is presented on an application interface of the second application device;

The second application device transmits the called video data acquired by the own camera to the second video codec module, performs encoding, and transmits the video encoding result to the calling party by using the second data terminal device.

Further, before the second application device answers the call of the calling party, the method further includes: the second application device sends a command to the second data terminal device by using the second control instruction generation and parsing module, The channel service type, the data rate, and the connection unit used by the second data terminal device when receiving the calling and/or transmitting the called video coding result are pre-set.

The present invention also provides a dialing device for a videophone, comprising: a first application device and a first data terminal device, wherein the first application device comprises a first video codec module;

The first data terminal device is configured to receive a video encoding result of the called party, and send the video encoding result to the first video encoding and decoding module, and configured to send the video encoding result of the calling party from the first video encoding and decoding module to the Call

The first video codec module is configured to decode the video encoding result of the called device, and then display the video decoding result on an application interface of the first application device; and further, receive the first The video data of the calling party acquired by the application device is encoded, and the video encoding result is sent to the called party by using the first data terminal device.

The device further includes: a first control instruction generation and parsing module, configured to send an instruction to the first data terminal device, send the calling party to the first data terminal device, and/or receive the called party The channel service type, data rate and connection unit used in the video coding result are pre-set; a dialing module, configured to determine that the current network environment is suitable for dialing a videophone, and determining that the called number is valid, calling the called number; and further, when calling the called number, by using the first control instruction Generating and parsing module transmitting the call instruction by the first data terminal device to the called party;

The first multimedia processing module is configured to save, intercept, pause or play the called video image on the application interface of the first application device when the calling and called parties make a videophone call.

The present invention also provides a receiving device for a videophone, comprising: a second application device and a second data terminal device, wherein the second application device comprises a second video codec module;

The second data terminal device is configured to receive a video encoding result of the calling party, and send the result to the second video encoding and decoding module, and configured to send the video encoding result of the called video from the second video encoding and decoding module to the main Call

The second video codec module is configured to decode the video encoding result of the calling party, and then display the video decoding result on an application interface of the second application device; and further, receive the second The called video data acquired by the application device is encoded, and the video encoding result is sent to the calling party by the second data terminal device.

The apparatus further includes: a second control instruction generation and parsing module, configured to send an instruction to the second data terminal device, to receive the caller and/or send the called party to the second data terminal device For the video coding result, the channel service type, data rate and connection unit used are pre-set;

The call detection module is configured to: when the second control instruction generation and parsing module parses the instruction received by the second data terminal device, and determines that the instruction is an incoming call instruction, triggering an incoming call type determining module;

The call type determining module is configured to determine, according to the incoming call instruction, that the incoming call is a normal voice call or a video call, and display an incoming call number and an application interface on the application interface of the second application device. Call type, prompting the called party to answer the incoming call;

The second multimedia processing module is configured to save, intercept, pause or play the calling video image on the application interface of the second application device when the calling and called parties perform the videophone.

The method and device for dialing and answering a videophone and a videophone according to the present invention are used to connect a data terminal device with an application device, such as a PC or a mobile terminal, and realize a videophone by using a higher specification configuration of the application device. The call not only improves the quality of the call, but also improves the quality of the video image and increases the size of the video image, thereby improving the user's visual experience. DRAWINGS

1 is a block diagram of a videophone according to an embodiment of the present invention;

2 is a schematic flow chart of a method for dialing a videophone according to an embodiment of the present invention;

3 is a schematic flow chart of a method for answering a videophone according to an embodiment of the present invention;

4 is a schematic diagram of a dialing device module of a videophone according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an answering device module of a videophone according to an embodiment of the present invention. detailed description

The method and apparatus for dialing and answering a videophone and a videophone according to the present invention will be described below with reference to the accompanying drawings.

Please refer to FIG. 1 , which is a schematic diagram of a module of a videophone according to an embodiment of the present invention.

The videophone of the embodiment of the present invention comprises: a dialing device of the videophone and an answering device of the videophone.

The dialing device of the videophone includes a first application device with a camera and a first data terminal device. The first application device includes a dialing module 101, a first video codec module 102, a first control instruction generating and parsing module 103, and a first multimedia processing module 104.

The dialing module 101 is configured to determine whether the current network environment is suitable for dialing a videophone, When it is determined to be appropriate, and when it is determined that the dialed number is valid, the called telephone is dialed; and the port number for transmitting the video and audio data stream between the first data terminal device and the first application device is obtained, and the port number is transmitted. To the first video codec module 102.

The first video codec module 102 is configured to encode the calling video stream acquired by the camera of the first application device, and transmit the video by using a port for transmitting the video and audio data stream between the first data terminal device and the first application device. And transmitting, to the first data terminal device, a port for transmitting the video and audio data stream between the first data terminal device and the first application device, and receiving the called video coding result received by the first data terminal device, And decoding, and then presented on the application interface of the first application device, the user sees the called video image in the application interface. The codec type library of the first video codec module 102 includes: an MPEG4 decoding library, an MPEG4 encoding library, and an AMR codec library.

The first multimedia processing module 104 is configured to save, intercept, pause or play the called video image on the application interface when the video call is made, and also close the local image or Replace the local image.

The first control instruction generation and parsing module 103 is configured to transmit the parameters required for dialing the videophone to the first data terminal device by means of an instruction, that is, send data to the called party and receive the called party to the first data terminal device. The channel service type, data rate, and connection unit used when transmitting the data are pre-set.

a first data terminal device, configured to receive, by using a port that transmits a video and audio data stream with the first application device, a local video coding result sent by the first control instruction generation and parsing module 103, to send to the called party; And receiving a video encoding result sent by the called party, and transmitting the called video encoding result to the first video via the first control instruction generation and parsing module 103 by using a port for transmitting the video and audio data stream with the first application device. Codec module 102.

Further, in this embodiment, the first application device may be a first PC with a camera or a first mobile terminal device with a video phone. The answering device of the videophone comprises a second application device with a camera and a second data terminal device. The second application device with a camera or the mobile terminal device with a videophone includes an incoming call detection module 105, an incoming call type determination module 106, a second video codec module 107, a second control instruction generation and analysis module 108, and a second Multimedia processing module 109.

a second control instruction generation and parsing module 108, configured to generate or parse an instruction transmitted between the second application device and the second data terminal device, and transmit the parameter required for dialing the videophone to the second The data terminal device, that is, the channel service type, the data rate, and the connection unit used for the second data terminal device when transmitting data to the calling party and receiving the data transmitted by the calling party, is preset.

The call detection module 105 is configured to parse the command sent by the dialing device transmitted by the second data terminal device by using the second control command generating and parsing module 108, and if the command is an incoming call command, triggering the call type determining module 106.

The call type determining module 106 is configured to receive an incoming call command sent by the incoming call detecting module 105, determine, according to the incoming call instruction, whether the incoming call type is a normal voice call or a video call, and display the caller number and the call type on the application interface, prompting the called party Answer the incoming call from the caller.

The second video codec module 107 is configured to encode the video stream acquired by the camera of the second application device, and transmit the video encoding result by using a port for transmitting the video and audio data stream between the second data terminal device and the second application device. Transmitted to the second data terminal device, and configured to receive a video encoding result of the calling video received by the second data terminal device by using a port for transmitting the video and audio data stream between the second data terminal device and the second application device, and performing The decoding is further presented on the application interface of the second application device, and the called party sees the calling image through the application interface. The codec type library of the second video codec module 107 includes: an MPEG4 decoding library, an MPEG4 encoding library, and an AMR codec library.

The second multimedia processing module 109 is configured to save, intercept, pause or play the calling video image on the application interface when the video call is made by the calling party and the called party. To close a local image or replace a local image.

a second data terminal device, configured to receive, by using a port that transmits the video and audio data stream with the second application device, the local video coding result sent by the second control instruction generation and parsing module 108, and send the result to the calling party, And receiving a video encoding result sent by the calling party, and transmitting the video encoding result of the calling party to the second video via the second control instruction generating and parsing module 108 by using a port for transmitting the video and audio data stream with the second application device. Codec module 107.

Further, in this embodiment, the second application device may be a second PC with a camera or a second mobile terminal device with a videophone.

Referring to the videophone device of FIG. 1, the method for dialing a videophone according to the embodiment of the present invention is as shown in FIG. 2, and includes the following steps:

Step S1, the first PC with the camera establishes a connection with the first data terminal device, and the dialing module detects whether the current network environment allows the videophone to be dialed. If yes, step S12 is performed; otherwise, step S17 is performed.

Step S12: The first PC sends an instruction to the first data terminal device, and selects a channel service type, a data rate, and a connection unit, that is, the first control instruction generation and parsing module sends the data to the called party to the first data terminal device. The channel service type, data rate, and connection unit used when receiving the data sent by the called party are pre-set. For example, the AT command AT+CBST=134.1.0 is issued to select a channel service type, a data rate, and a connection unit, where the first parameter 134 represents a data rate, and the value is 64000 bps, and the second parameter 1 represents a selection. The channel service type is circuit domain data service (synchronization), and the third parameter 0 indicates that the connection unit is transparent transmission. In addition, the called is a personal computer with a camera or a mobile terminal device with a videophone.

Step S13: Initialize the first video codec module. Loading the first video codec module, acquiring a function interface, creating a video application object, and completing the initialization process of the first video codec module. In addition, the size of the form displaying the far-end image and the local image on the first PC application interface is transmitted to the first video codec module. Step S14: The first PC acquires a port number of the video and audio data stream transmitted between the first data terminal device and the first PC by using the dialing module, and sends the port number to the first video codec module. The opening and closing control of this port is controlled by the first video codec module.

Step S15: Dial the called number through the dialing module.

In the above step S15, the dialing module may further determine the validity of the dialed number. If yes, proceed to step S16. Otherwise, step S17 is performed.

Step S16: After the called party answers, the call between the calling party and the called party is successfully established, and the video call state is entered. The first PC transmits the video data acquired by the camera to the first video codec module, performs encoding, and then transmits the video encoding result to the port by transmitting the video and audio data stream between the first data terminal device and the first PC. a data terminal device, the first data terminal device sends the video encoding result to the called party; in addition, the first data terminal device receives the video encoding result from the called party, and then transmits the video between the first data terminal device and the first PC And the port of the audio data stream, sending the video coding result to the first video codec module, performing decoding, and then presenting the video decoding result on the application interface of the first PC, that is, using the first multimedia processing module to the application interface The called video image is saved, intercepted, paused or played. The remote image and the local image form on the application interface respectively display the called image and the local image, and the call is made between the calling party and the called party.

In addition, when the dialing of the videophone is initiated, the user is not successfully dialed, and the user is asked whether to re-initiate the normal voice call. If yes, step S11 is performed; otherwise, step S17 is performed.

Step S17: The application interface displays a call failure message, and enters a call idle state. Referring to the videophone device of FIG. 1, the flow of the method for answering a videophone according to the embodiment of the present invention is as shown in FIG. 3, and includes the following steps:

Step S21: The second PC with the camera establishes a connection with the second data terminal device, and when the second PC is initialized, the caller ID format is extended. When the incoming call is a videophone incoming call, the format of the videophone incoming call is displayed; when the incoming call is made by a normal voice call, the format of the normal voice call is displayed. Step S22: The second data terminal device sends the received caller information to the second control command generation and parsing module. The second control command generating and parsing module generates an incoming call command according to the incoming call information, and transmits the incoming call command to the incoming call. The monitoring module, when the incoming call monitoring module detects the incoming call command, triggers the incoming call type determining module to parse the received incoming call command, obtain the incoming call number and the type of the incoming call, determine the incoming call type as a normal voice call or a video call, and pass the second The multimedia processing module displays the call type and the phone number of the incoming call on the application interface. In addition, the second PC can also play an incoming call tone.

Step S23: The second PC sends an instruction to the second data terminal device by using the second instruction generation and parsing module to select a channel service type, a data rate, and a connection unit, that is, send data to the calling terminal to the second data terminal device. When receiving the data sent by the calling party, the channel service type, data rate, and connection unit used are preset. For example, the AT command AT+CBST=134.1.0 is issued to select the channel service type, data rate, and connection unit, where the first parameter 134 represents the data rate, and the value is 64000 bps, and the second parameter 1 represents the selection. The channel service type is circuit domain data service (synchronization), and the third parameter 0 indicates that the connection unit is transparent transmission. In addition, the caller is a personal computer with a camera or a mobile terminal device with a videophone.

Step S24: Start a second video codec module, and send a call instruction.

Step S25: Accept the call of the calling party, and the call between the called party and the calling party is successfully established, and the call state is entered. The second video codec module receives the video coding result of the incoming call by the port of the device that transmits the video and audio data stream between the second data terminal device and the second PC, and decodes the data through the second multimedia processing module. The calling image and the local image will be displayed on the application interface of the second PC, and the call between the called party and the calling party will be performed.

For the above-mentioned videophone dialing method, the present invention provides a dialing device, as shown in FIG. 4, including: a first application device and a first data terminal device, the first application device includes a first video codec module 102; a first data terminal device, configured to receive a video encoding result of the called party, and send the video encoding result to the first video encoding and decoding module 102; and configured to send the video encoding result of the calling party from the first video encoding and decoding module 102 to the called party;

The first video codec module 102 is configured to: decode the video encoding result of the called device, and then display the video decoding result on the application interface of the first application device; and further, receive the caller acquired by the first application device. The video data is encoded, and the video encoding result is sent to the called party through the first data terminal device.

The dialing device further includes: a first control instruction generating and parsing module 103, configured to send an instruction to the first data terminal device, when the first data terminal device sends the calling party and/or receives the video encoding result of the called party The channel service type, the data rate, and the connection unit are preset, and the dialing module 101 is configured to determine the number of the called party when the current network environment is suitable for dialing the videophone and the determined called number is valid; When the called number is called, the first control instruction generating and parsing module 103 sends the call instruction to the called party by the first data terminal device; the first multimedia processing module 104 is configured to perform the calling and the called party. The called video image on the application interface of the first application device is saved, intercepted, paused, or played back during the call.

The present invention also provides a receiving device for a videophone. As shown in FIG. 5, the present invention includes: a second application device and a second data terminal device, where the second application device includes a second video. Codec module 107;

a second data terminal device, configured to receive a video encoding result of the calling party, and send the result to the second video encoding and decoding module 107; and configured to send the video encoding result of the called video from the second video encoding and decoding module 107 to the calling party;

The second video codec module 107 is configured to: decode the video encoding result of the calling party, and then display the video decoding result on the application interface of the second application device; and further, receive the called video acquired by the second application device. Data, encoding, and then video through the second data terminal device The encoded result is sent to the caller.

The apparatus further includes: a second control instruction generation and parsing module 108, configured to send an instruction to the second data terminal device, and when the second data terminal device receives the calling and/or transmits the video encoded result of the called party, The channel service type, the data rate, and the connection unit are configured in advance; the call detection module 105 is configured to parse the command received by the second data terminal device by using the second control instruction generation and parsing module 108, and determine that the command is an incoming call. When instructing, the call type determination module 106 is triggered;

The call type determining module 106 is configured to determine, according to the incoming call instruction, that the incoming call is a normal voice call or a video call, and display the caller number and the call type on the application interface of the second application device, and prompt the called party to respond to the incoming call;

The second multimedia processing module 109 is configured to save, intercept, pause, or play the calling video image on the application interface of the second application device when the calling and called parties perform the videophone.

Compared with the prior art, the present invention provides a method and a device for dialing and receiving a videophone and a videophone, and connects the data terminal device with an application device, such as a PC and a mobile terminal, and utilizes a higher specification configuration of the PC. The realization of the videophone call not only improves the call quality, but also improves the video image quality and increases the video image size, thereby improving the user's visual call experience, and is suitable for using a mobile phone, a wireless data card, and a universal serial. A data terminal device such as a USB modem (USB Modem, Universal Serial BUS Modem) makes and receives a video call.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A videophone, comprising: a dialing device and an answering device, wherein: the dialing device comprises a first application device and a first data terminal device, wherein: the first application device comprises a first video encoding a decoding module, comprising: a second application device and a second data terminal device, wherein: the second application device comprises a second video codec module; the first data terminal device is configured to receive the answering The called video coding result of the device is sent to the first video codec module, and is further configured to send the video coding result of the calling party from the first video codec module to the answering device;

The second data terminal device is configured to receive a video coding result of the calling party from the dialing device, and send the result to the second video codec module, and is further configured to: send the called party from the second video codec module The video encoding result is sent to the dialing device;

The second video codec module is configured to decode the video encoding result of the calling party, and display the video decoding result on an application interface of the second application device; and further, receive the second The called video data acquired by the application device is encoded, and the called video encoding result is sent to the dialing device by the second data terminal device.

2. A videophone according to claim 1 wherein:

The first application device further includes: a first control instruction generation and parsing module, configured to send an instruction to the first data terminal device, and send the calling party and/or receive the called party to the first data terminal device The channel service type, data rate and connection unit used in the video coding result are pre-set;

The second application device further includes: a second control instruction generation and parsing module, configured to deliver Directing to the second data terminal device, presetting the channel service type, data rate, and connection unit used by the second data terminal device when receiving the calling and/or transmitting the video encoding result of the called party .

3. The videophone of claim 2, wherein

The first application device further includes: a dialing module, configured to determine that the current network environment is suitable for dialing a videophone, and determine that the called number is valid, and call the called number; and is further used when calling the called number Transmitting, by the first control instruction generation and parsing module, the call instruction by the first data terminal device to the answering device;

4. The videophone of claim 3, wherein

The first application device further includes: a first multimedia processing module, configured to: when the calling party and the called party make a videophone call, perform the called video image on the application interface of the first application device Save, intercept, pause or play;

5. A videophone according to any one of claims 1 to 4, characterized in that

The first application device is a first personal computer (PC) with a camera or a first mobile terminal device with a videophone; The second application device is a second PC with a camera or a second mobile terminal device with a videophone.

6. A method for dialing a videophone, the method comprising:

The method according to claim 6, wherein before the first application device dials the called number, the method further includes:

The first application device sends a command to the first data terminal device by using a first control instruction generation and parsing module, and sends the caller and/or receives the called party to the first data terminal device. The channel service type, data rate, and connection unit used in the video coding result are preset.

8. A method for answering a videophone, the method comprising:

The second application device establishes a connection with the second data terminal device, and starts the second video codec module;

Transmitting, by the second application device, the called video data acquired by the camera to the first The second video codec module performs encoding, and sends the video encoding result to the calling party through the second data terminal device.

The method according to claim 8, wherein before the second application device answers the call of the calling party, the method further includes:

The second application device sends a command to the two data terminal devices by using a second control instruction generation and parsing module, and the second data terminal device receives the caller and/or sends the called party. The channel service type, data rate, and connection unit used in the video coding result are preset.

A device for dialing a videophone, comprising: a first application device and a first data terminal device, wherein the first application device comprises a first video codec module;

The device according to claim 10, further comprising: a first control instruction generation and parsing module, configured to send an instruction to the first data terminal device, to the first data terminal The channel service type, the data rate, and the connection unit used by the device when transmitting the calling and/or receiving the video encoding result of the called party are pre-set; the dialing module is configured to determine that the current network environment is suitable for dialing Referring to the telephone, and determining that the called number is valid, calling the called number; and further, when calling the called number, using the first control instruction generation and parsing module to Sending, by the first data terminal device, the called party; The first multimedia processing module is configured to save, intercept, pause, or play the called video image on the application interface of the first application device when the calling and called parties make a videophone call.

12. A device for answering a videophone, comprising: a second application device and a second data terminal device, wherein the second application device comprises a second video codec module;

The device according to claim 12, further comprising: a second control instruction generation and parsing module, configured to send an instruction to the second data terminal device, to the second data terminal The device performs pre-setting of the channel service type, data rate, and connection unit used when receiving the calling and/or transmitting the called video coding result, and the call detection module is configured to pass the second The control instruction generation and parsing module parses the instruction received by the second data terminal device, and when the instruction is an incoming call instruction, triggers an incoming call type determining module;

The call type determining module is configured to determine, according to the incoming call instruction, that the incoming call is a normal voice call or a video call, and display an incoming call number and a call type on an application interface of the second application device, prompting the called party to answer the incoming call. ;