WO2011137872A2

WO2011137872A2 - Method, system, and corresponding terminal for multimedia communications

Info

Publication number: WO2011137872A2
Application number: PCT/CN2011/077651
Authority: WO
Inventors: 张潇
Original assignee: 华为终端有限公司
Priority date: 2011-07-27
Filing date: 2011-07-27
Publication date: 2011-11-10
Also published as: CN102308566B; CN102308566A; WO2011137872A3

Abstract

Disclosed in embodiments of the present invention are a method, a system, and a corresponding terminal for multimedia communications. The method comprises: a first terminal establishing a communication link with a second terminal; the first terminal determining, on the basis of a user operation, which multimedia file within a multimedia library a user has selected; the first terminal converting file code of the user-selected multimedia file into a dual-tone multi-frequency (DTMF) signal and sending said signal to the second terminal. The second terminal decodes the DTMF signal into file code, then retrieves and plays from a multimedia library a corresponding multimedia file on the basis of the file code. The method, system, and corresponding terminal for multimedia communications disclosed in embodiments of the present invention utilize DTMF signals to combine the mood of a multimedia performance with traditional voice communication, enabling an emotional experience richer than in traditional voice communication, thereby enhancing sentimental exchange by voice communication.

Description

Multimedia communication method, system and corresponding terminal

The invention relates to a communication, in particular to a multimedia communication method, system and corresponding terminal. Background technique

On the one hand, with the popularity of various smart mobile terminals, more and more mobile terminal applications are gradually changing people's communication life. Many traditional communication and usage habits that people are accustomed to are being changed by more and more humanized new applications. For example, we can now add a variety of emotional emojis to conversational text messages to increase the fun of communication and give each other More rich emotional experiences.

However, as the most basic function of the mobile terminal, the traditional call mode has been used, and only the voice mode has been used. After the two parties establish a call, the two parties interact more univocally through the voice, and lack the humanity features such as fun and face-to-face communication.

On the other hand, Dual Tone Multi Frequency (DTMF) has been used for more than 10 years. DTMF consists of a high frequency group and a low frequency group. The high and low frequency groups each contain four frequencies. The DTMF signal is superimposed by a high frequency signal and a low frequency signal to form a combined signal representing a number. Therefore, the DTMF signal has a total of 16 codes. The corresponding DTMF dial pad is a 4x4 matrix, with each row representing a low frequency and each column representing a high frequency (as shown in Figure 1). Each time a button is pressed, a DTMF signal is formed by combining a combination of high frequency and low frequency sinusoidal signals, such as Ί' equivalent to 697 and 1209 Hz (Ηζ). The switch can decode these DTMF signals to determine the corresponding button. The DTMF signal is originally used to transmit telephone dialing information through the channel/time slot carrying the voice. The DTMF mode is selected because it can reliably distinguish the dialing information from the voice. In general, the sound signal 4 is difficult to cause an erroneous trigger to the DTMF receiver. Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a multimedia communication method, system and corresponding terminal, which combines the emotional multimedia expression form with the traditional voice communication mode by using DTMF, which brings more people than the traditional communication mode. Rich emotional experience, enhance emotional communication during the call.

In order to solve the above technical problem, an embodiment of the present invention provides a multimedia communication method, and a packet Includes:

The first terminal establishes a communication connection with the second terminal;

The first terminal determines, according to a user operation, a multimedia file selected by the user in the multimedia library; the first terminal converts the file of the multimedia file selected by the user into a dual-tone multi-frequency DTMF signal, and sends the file to the Said second terminal;

The second terminal decodes the DTMF signal into a file encoding, and invokes and plays a corresponding multimedia file in its own multimedia library according to the file encoding.

The first terminal determines, according to a user operation, the multimedia file selected by the user in the multimedia library, including:

The first terminal presents the multimedia file in the multimedia library to the user, and determines the multimedia file selected by the user according to the operation of the user; or

The first terminal determines a file code corresponding to the group of buttons according to a user operation on a group of buttons, and further determines a multimedia file selected by the user according to the file encoding.

The multimedia library stores a multimedia file and a file encoding corresponding to each multimedia file; the same multimedia file has the same file encoding in the first terminal and the second terminal; a multimedia file and the first file Corresponding to a group of buttons on the terminal/second terminal, the file encoding of the multimedia file is composed of the identifiers of the group of buttons.

The first terminal encodes a file of the multimedia file selected by the user into a DTMF signal, and the DTMF signal generated by the file encoding conversion is consistent with the DTMF signal generated by a group of buttons corresponding to the multimedia file.

The second terminal decodes the DTMF signal into a file code, and invokes and plays the corresponding multimedia file in the multimedia library according to the file encoding, including:

The second terminal distinguishes the DTMF signal from the signal sent by the first terminal, and decodes the DTMF signal into a corresponding file code:

The second terminal searches for a corresponding multimedia file in its own multimedia library according to the file encoding;

The second terminal plays the multimedia file.

The second terminal decodes the DTMF signal into a file code, and invokes and plays the corresponding multimedia file in the multimedia library according to the file encoding, and further includes:

If the second terminal decodes the DTMF signal into a file encoding, its own multimedia library There is no corresponding multimedia file;

And acquiring, by the second terminal, the multimedia file corresponding to the file encoding to the first terminal or the server according to the file encoding, and saving the multimedia file in the multimedia library.

Correspondingly, the embodiment of the present invention further provides a multimedia communication system, including: a first terminal and a second terminal;

The first terminal includes:

a communication connection module, configured to establish a communication connection with the second terminal;

a first multimedia library, configured to store a multimedia file, and determine, according to a user operation, a multimedia file selected by the user in the multimedia library thereof;

An encoding processing module, configured to convert a file encoding of a multimedia file selected by a user into a DTMF signal, and send the data to the second terminal by using the communication connection module, so that the second terminal is configured according to the DTMF signal The second multimedia library of the second terminal invokes and plays the corresponding multimedia file;

The second terminal includes:

a signal receiving module, configured to establish a communication connection with the first terminal, receive a signal sent by the first terminal, and distinguish a DTMF signal from the signal;

a second multimedia library, configured to store a multimedia file, and a file encoding corresponding to each multimedia file; the same multimedia file has the same file encoding in the second multimedia library and the first media library; Decoding the DTMF signal differentiated by the signal receiving module into a corresponding file encoding, and searching for the corresponding multimedia file in the second multimedia library according to the file encoding and playing.

Correspondingly, the embodiment of the present invention further provides a terminal, including:

An encoding processing module, configured to convert a file encoding of a multimedia file selected by a user into a DTMF signal, and send the data to the second terminal by using the communication connection module, so that the second terminal is configured according to the DTMF signal The multimedia library of the second terminal calls and plays the corresponding multimedia file.

The first multimedia library includes:

a file storage unit, configured to store a multimedia file, and a file encoding corresponding to each multimedia file; the same multimedia file has the same file encoding in the terminal and the second terminal; The file corresponds to a group of buttons on the terminal, and the file code of the multimedia file is composed of the identifier of the group of buttons;

a file selection unit, configured to present a multimedia file in the multimedia library to the user, and determine a multimedia file selected by the user according to the operation of the user; or determine a file code corresponding to the group of buttons according to a user operation on a group of buttons And determining, according to the file encoding, a multimedia file selected by the user.

The encoding processing module includes:

a DTMF signal conversion unit, configured to convert a file code of a multimedia file selected by a user into a DTMF signal; and generate a DTMF signal generated by the file encoding conversion and a DTMF signal generated by triggering a group of buttons corresponding to the multimedia file on the terminal Consistent

a DTMF signal sending unit, configured to send the DTMF signal generated by the DTMF signal conversion unit to the second terminal, so that the second terminal invokes and plays a corresponding one from the multimedia library of the second terminal according to the DTMF signal. Multimedia files.

Correspondingly, the embodiment of the present invention further provides another terminal, including:

a second multimedia library, configured to store a multimedia file, and a file encoding corresponding to each multimedia file; the same multimedia file has the same file encoding in the second multimedia library and the first terminal; a multimedia processing module, The DTMF signal used to distinguish the signal receiving module is decoded into a corresponding file code, and the corresponding multimedia file is searched and played in the second multimedia library according to the file encoding.

The terminal further includes: a multimedia file obtaining module, configured to: when the multimedia file corresponding to the file code decoded by the DTMF signal is not in the second multimedia library, to the first terminal or server Obtaining a multimedia file corresponding to the file encoding, and saving the file in the second multimedia library.

The multimedia communication method, system and corresponding terminal provided by the embodiments of the present invention use DTMF to combine the emotional multimedia expression form with the traditional voice communication mode, which brings more emotional emotional risks and enhancements to the people than the traditional communication mode. Emotional communication during the call. DRAWINGS The drawings used in the examples or the description of the prior art are described in a single manner. It is obvious that the drawings in the following description are only some embodiments of the present invention, and are not creative to those skilled in the art. Other drawings can also be obtained from these drawings on the premise of labor.

Figure 1 is a schematic diagram of frequency combination of DTMF signals;

2 is a schematic flowchart diagram of a first embodiment of a multimedia communication method according to the present invention;

3 is a schematic flow chart of a second embodiment of a multimedia communication method provided by the present invention;

Figure 4 is a schematic diagram of the storage of multimedia files;

FIG. 5 is a schematic structural diagram of an embodiment of a multimedia communication system according to the present invention; FIG.

6 is a schematic structural diagram of a terminal embodiment provided by the present invention;

FIG. 7 is a schematic structural diagram of another terminal embodiment according to the present invention. detailed description

The multimedia communication method, system and corresponding terminal provided by the embodiments of the present invention use DTMF to combine the emotional multimedia expression form with the traditional voice communication mode, which brings more emotional experience and enhances the call than the traditional call mode. Emotional communication in the middle.

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

2 is a schematic flowchart of a first embodiment of a multimedia communication method provided by the present invention, as shown in FIG. 2:

In step S100, the first terminal establishes a communication connection with the second terminal.

In step S101, the first terminal determines, according to a user operation, a multimedia file selected by the user in its multimedia library.

In step S102, the first terminal converts the file of the multimedia file selected by the user into a dual-tone multi-frequency DTMF signal.

In step S103, the first terminal sends the DTMF signal to the second terminal.

In step S104, the second terminal decodes the DTMF signal into a file encoding.

In step S105, the second terminal is invoked in its own multimedia library according to the file encoding. Play the corresponding multimedia file.

The multimedia communication method provided by the embodiment of the present invention combines the emotional multimedia expression form with the traditional voice communication mode by using DTMF, which brings more rich emotional experience and enhances emotional communication during the call than the traditional communication mode.

Referring to FIG. 3, it is a schematic flowchart of a second embodiment of a multimedia communication method according to the present invention. Compared with the previous embodiment, the flow of the multimedia communication method will be described in more detail in this embodiment.

In the first terminal and the second terminal involved in the embodiment of the present invention, there is a multimedia library, and the multimedia file library stores a multimedia file and a file code corresponding to each multimedia file (see FIG. 4). The multimedia files include: pictures, animations, videos, audio, and the like. If the same multimedia file is stored in both the first terminal and the second terminal, the multimedia file has the same file encoding in the first terminal and the second terminal.

Further, the file encoding of the multimedia file is composed of the identifiers of a group of buttons on the terminal, that is, the file encoding of a multimedia file can be represented by a group of buttons on the terminal. For example, the multimedia file "smile face. JPG" has a file code of "101", and a set of buttons corresponding to the file is the buttons "1", "0", "1" on the terminal. At the same time, for the same multimedia file stored in the first terminal and the second terminal, not only the file code is the same, but the corresponding group of buttons is also the same. For example, if the audio multimedia file "Rainbow.mp3" is stored in both the first terminal and the second terminal, the file encoding of the multimedia file is "40" in the first terminal and the second terminal, and is in the first In the terminal and the second terminal, the multimedia file corresponds to the terminal buttons "4" and "0" "1".

Further, since the DTMF signal has a total of 16 code words, in a multimedia file, the file coded code words can only be composed of the identifiers of the corresponding buttons of the 16 DTMF code words on the terminal.

The flow of the multimedia communication method provided by the embodiment of the present invention is as shown in FIG. 3, and includes:

In step S200, the first terminal establishes a communication connection with the second terminal. The establishing the communication connection means that the first terminal communicates with the second terminal through dialing, switch/server transfer, and the user of the first terminal and the second terminal can make a call. It is of course also possible for the second terminal to initiate a communication connection.

In step S201, the first terminal determines the multimedia file selected by the user in its multimedia library according to the user operation. The multimedia file selected by the first end user is a multimedia file that the second end user that the user wishes to talk to hears or hears.

More specifically, the first terminal determines that the multimedia file selected by the user includes:

The user enters the first terminal multimedia library through operation (that is, the first terminal presents the user to the multimedia The multimedia file in the library, and then the user selects the multimedia file according to the needs of the user; or the user directly operates on the button of the first terminal, and the first terminal determines the file code corresponding to the group of buttons according to the operation of the user, and further according to the The file encoding determines the multimedia file selected by the user. In the first way, the user can intuitively see all the optional multimedia files in the multimedia library, but the operation is more complicated than the second method; the second method is quick and simple, but the user needs to remember the multimedia files that he wants to select. coding. In practical applications, the above two methods can be used in combination.

In step S202, the first terminal converts the file code of the multimedia file selected by the user into a DTMF signal. More specifically, the conversion of the file code into the DTMF signal means that the first terminal converts each bit code of the file code of the multimedia file selected by the user into a DTMF signal. For example, if the multimedia file selected by the user is "Rainbow.mp3" and the file code is "401", the first terminal superimposes the corresponding low frequency group and high frequency group signal according to the frequency combination diagram of the DTMF signal shown in FIG. 4" is the superposition of the 770HZ and 1209HZ signals, "0" is the superposition of the 941HZ and 1336HZ signals, and "1" is the superposition of the 697HZ and 1209HZ signals.

It should be noted that the DTMF signal generated by the file encoding conversion is consistent with the DTMF signal generated by a group of buttons corresponding to the multimedia file. For example, when the first terminal converts "4" in the file encoding into a DTMF signal, the 770HZ and 1209HZ signals are superimposed; and when the user directly presses the button "4" on the first terminal, the DTMF signal generated by the first terminal is generated. It is also a superposition of the 770HZ and 1209HZ signals.

In step S203, the first terminal sends the DTMF signal generated by the file encoding conversion to the second terminal. More specifically, the first terminal can transmit the DTMF signal through a voice channel or a signaling channel established between the second terminal. The reason why the DTMF signal can be transmitted over the voice channel is that the DTMF signal contains two sets of frequency signals, and the DTMF signal receiver can convert it from the time domain to the frequency domain by mathematical transformation, and then perform frequency detection. Since the DTMF signal has higher energy only on the fundamental wave, and the speech signal is superimposed with a strong second harmonic on the fundamental wave, the DTMF can be distinguished by detecting the fundamental wave and the second harmonic of the signal. Signal and voice signals.

In addition, the DTMF signal is different from the monophonic coding (speech signal), and the DTMF signal is formed by taking a frequency of 8 and taking a frequency signal from each of the high and low frequency groups. The frequencies of the eight frequency signals are different. There is no harmonic relationship, so the interference of other signals on the DTMF signal is greatly reduced, and the DTMF signal has high operational reliability, especially anti-interference ability.

In step S204, the second terminal receives the DTMF signal sent by the first terminal, and re-decodes it. Encode multimedia files. More specifically, the second terminal is separated from the signal sent by the first terminal.

DTMF signal, and determining the corresponding codeword according to the frequency of each DTMF signal, and combining the codewords corresponding to each DTMF signal, that is, forming a file encoding, which is the first end user wants the second end user to see The file encoding of the multimedia file.

In step S205, the second terminal searches for a corresponding multimedia file in its own multimedia library according to the file encoding. If it can be found, step S206 is performed; otherwise, step S207 is performed.

In step S206, the second terminal plays the multimedia file that it finds in its own multimedia library. More specifically, because the same multimedia file necessarily has the same file encoding in the first terminal and the second terminal, the multimedia file obtained by the second terminal search is necessarily selected by the first terminal user in the media library of the first terminal. The multimedia file that is expected to be presented to the second terminal user is the same, so the second terminal can directly call and play the multimedia file from the media library of the terminal, without acquiring or downloading the multimedia file to the first terminal or other server. The utility model not only saves network transmission resources, but also can present the multimedia file to the second terminal user more quickly, and can also be fully applied in a real-time application scenario with strong voice calls.

In step S207, if the second terminal decodes the DTMF signal into a file encoding, there is no corresponding multimedia file in its own multimedia library; then the second terminal acquires the file encoding from the first terminal or the server according to the file encoding. Corresponding multimedia files and play. At the same time, the second terminal saves the multimedia file in its own multimedia library. This process enables the second terminal to update its own multimedia library during the call.

In the existing communication network, during the conversation between the first terminal and the second terminal, if the user presses a numeric button on the first terminal, the second terminal user will hear a "beep" because the user is When a digital button is pressed on the first terminal, the first terminal sends the DTMF signal corresponding to the button to the second terminal, and the second terminal also receives the DTMF signal, but does not analyze it, but directly The audio signal is processed, so the second end user will hear a "beep".

The above example shows that the transmission, transmission, and reception process of the DTMF signal from the first terminal to the second terminal can be implemented in the existing communication network. Therefore, the multimedia communication method provided by the embodiment of the present invention is not required to be modified on the existing network. It only adds the DTMF signal parsing function of the terminal, and uses the DTMF signal to combine the emotional multimedia expression with the traditional voice communication method, which brings more emotional experience to the people than the traditional call mode, and enhances the call. Emotional communication, no changes to the live network, and no increase in overhead. FIG. 5 is a schematic structural diagram of an embodiment of a multimedia communication system according to the present invention. As shown in FIG. 5, the system includes: a first terminal 1 and a second terminal 2;

The first terminal 1 specifically includes:

The communication connection module 11 is configured to establish a communication connection with the second terminal 2.

The first multimedia library 12 is configured to store the multimedia file, and determine the multimedia file selected by the user in the multimedia library according to the user operation.

The encoding processing module 13 is configured to convert the file code of the multimedia file selected by the user into a DTMF signal, and send the data to the second terminal 2 through the communication connection module 11, so that the second terminal 2 according to the DTMF The signal is called from the second multimedia library 22 of the second terminal 2 and plays the corresponding multimedia file.

The second terminal 2 specifically includes:

The signal receiving module 21 is configured to establish a communication connection with the first terminal 1, receive a signal sent by the first terminal 1, and distinguish a DTMF signal from the signal.

The second multimedia library 22 is configured to store multimedia files and file codes corresponding to the respective multimedia files; the same multimedia file has the same file encoding in the second multimedia library 22 and the first media library 12.

The multimedia processing module 23 is configured to decode the DTMF signal differentiated by the signal receiving module 21 into a corresponding file encoding, and search for the corresponding multimedia file in the second multimedia library 22 according to the file encoding and play .

The multimedia communication system provided by the embodiment of the present invention combines the emotional multimedia expression form with the traditional voice communication mode by using DTMF, which brings more rich emotional experience and enhances emotional communication during the call than the traditional communication mode.

FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention. The terminal provided in this embodiment can be used as the first terminal in the multimedia communication system shown in FIG. 5, and the structure of the terminal is as shown in FIG. The communication connection module 11, the first multimedia library 12, and the encoding processing module 13.

The communication connection module 11 is configured to establish a communication connection with the second terminal. The establishing the communication connection means that the communication connection module 11 communicates with the second terminal through dialing, switch/server transfer, and the user of the first terminal and the second terminal can make a call.

The first multimedia library 12 is configured to store the multimedia file, and determine the multimedia file selected by the user in the multimedia library according to the user operation. More specifically, the first multimedia library 12 includes: The file storage unit 121 is configured to store a multimedia file, and a file code corresponding to each multimedia file (FIG. 4). The multimedia files include: pictures, animations, videos, audio, and the like. If the same multimedia file is stored in both the terminal and the second terminal, the multimedia file has the same file encoding in the file storage unit 121 and the multimedia library of the second terminal.

Further, the file encoding of the multimedia file is composed of the identifiers of a group of buttons on the terminal, that is, the file encoding of a multimedia file can be represented by a group of buttons on the terminal. For example, the multimedia file "smile face. JPG" has a file code of "101", and a set of keys corresponding to the file is the buttons "1", "0", "1" on the terminal. At the same time, for the same multimedia file stored in the terminal file storage unit 121 and the second terminal, not only the file code is the same, but also a corresponding group of buttons are the same. For example, if the audio file "Rainbow.mp3" is stored in both the terminal file storage unit 121 and the second terminal, the file encoding of the multimedia file is "401" in the file storage unit 121 and the second terminal. And in the terminal and the second terminal, the multimedia file corresponds to the terminal buttons "4" and "0" "1".

The file selection unit 122 is configured to determine a multimedia file selected by the user in the file storage unit 121 according to a user operation. The multimedia file selected by the end user is a multimedia file that the second end user that the user wishes to talk to hears or hears.

More specifically, the file selection unit 122 determines that the multimedia file selected by the user includes: the user enters the file storage unit 121 by operation (ie, the file storage unit 121 presents the multimedia file stored by the user to the user), and then the user selects the multimedia according to the needs of the user. The file selection unit 122 determines the user's selection; or the user directly operates on the button of the terminal, and the file storage unit 121 determines the file code corresponding to the group of buttons according to the user's operation, and further determines the user selection according to the file code. Multimedia files. In the first way, the user can intuitively see all the optional multimedia files in the multimedia library, but the operation is more complicated than the second method; the second method is quick and simple, but the user needs to remember the multimedia files that he wants to select. coding. In practical applications, the above two methods can be used in combination.

The encoding processing module 13 is configured to convert the file code of the multimedia file selected by the user into a DTMF signal, and send the data to the second terminal by using the communication connection module, so that the second terminal according to the DTMF signal The multimedia library of the second terminal invokes and plays the corresponding multimedia file.

More specifically, the encoding processing module 13 includes:

The DTMF signal conversion unit 131 is configured to convert the file code of the multimedia file selected by the user into DTMF signal. More specifically, the so-called DTMF signal conversion unit 131 converts the file code into a DTMF signal, which means that the DTMF signal conversion unit 131 converts each bit code of the file code of the multimedia file selected by the user into a DTMF signal. For example, if the multimedia file selected by the user is "Rainbow. mp3," and its file code is "401", the DTMF signal conversion unit 131 will combine the corresponding low frequency group and high frequency group signal according to the DTMF signal frequency combination diagram shown in FIG. Superposition: "4" is a superposition of the 770HZ and 1209HZ signals, "0," is the superposition of the 941HZ and 1336HZ signals, and T is the superposition of the 697HZ and 1209HZ signals.

It should be noted that the DTMF signal conversion unit 131 synchronizes the DTMF signal generated by the file encoding conversion of the multimedia file with the DTMF signal generated by a group of buttons corresponding to the multimedia file. For example, when the DTMF signal conversion unit 131 converts the "4" in the file encoding into the DTMF signal, the 770HZ and 1209HZ signals are superimposed; and when the user directly presses the button "4" on the terminal, the DTMF signal generated by the terminal is also 770HZ. Superposition with the 1209HZ signal.

The DTMF signal transmitting unit 132 is configured to send the DTMF signal converting unit 131 to the second terminal to convert the generated DTMF signal, so that the second terminal invokes and plays the corresponding multimedia file from the multimedia library of the second terminal according to the DTMF signal.

More specifically, the DTMF signal transmitting unit 132 can transmit the DTMF signal through a voice channel or a signaling channel established between the terminal and the second terminal. The reason why the DTMF signal can be transmitted over the voice channel is that the DTMF signal contains two sets of frequency signals, and the DTMF signal receiver can convert it from the time domain to the frequency domain by mathematical transformation, and then perform frequency detection. Since the DTMF signal has higher energy only on the fundamental wave, and the speech signal is superimposed with a strong second harmonic on the fundamental wave, the second terminal can detect the fundamental wave and the second harmonic of the signal. Differentiating between DTMF signals and voice messages In addition, DTMF signals are different from monophonic codes (speech signals). DTMF signals are obtained by taking 8 out of 2, and taking a frequency signal from each of the high and low frequency groups. The frequency of the frequency signals is different, and there is no harmonic relationship, so the interference of other signals on the DTMF signal is greatly reduced, and the DTMF signal has high operational reliability, especially anti-interference ability.

Further, after receiving the DTMF signal, the second terminal re-decodes it into a multimedia file encoding, and then searches for a corresponding multimedia file in its own multimedia library according to the file encoding, and if found, plays the found multimedia file; Corresponding multimedia file; the second terminal may obtain the multimedia file corresponding to the file encoding and play it to the terminal or the server according to the file encoding. In the existing communication network, during the conversation between the first terminal and the second terminal, if the user presses a numeric button on the first terminal, the second terminal user will hear a "beep" because the user is When a digital button is pressed on the first terminal, the first terminal sends the DTMF signal corresponding to the button to the second terminal, and the second terminal also receives the DTMF signal, but does not analyze it, but directly The audio signal is processed, so the second end user will hear a "beep".

The above example shows that the transmission, transmission, and reception process of the DTMF signal from the first terminal to the second terminal can be implemented in the existing communication network. Therefore, the multimedia communication method provided by the embodiment of the present invention is not required to be modified on the existing network. Only the terminal needs to convert the file number of the multimedia file into a DTMF signal and send it to the second terminal. By using DTMF signals, the terminal can combine the emotional multimedia expression with the traditional voice communication method, which brings more emotional experience to the people than the traditional call mode, enhances the emotional communication during the call, and has no change to the existing network. No increase in overhead.

FIG. 7 is a schematic structural diagram of another terminal embodiment provided by the present invention. The terminal provided in this embodiment can be used as the second terminal in the multimedia communication system shown in FIG. 5, and the structure of the terminal is as shown in FIG. 7. , including:

The signal receiving module 21 is configured to establish a communication connection with the first terminal, receive a signal sent by the first terminal, and distinguish the DTMF signal from the signal.

More specifically, the signal receiving module 21 receives a signal transmitted by the first terminal through a voice channel or a signaling channel established between the terminal and separates the DTMF signal from the received signal. Since the DTMF signal contains two sets of frequency signals, the signal receiving module 21 can convert it from the time domain to the frequency domain by mathematical transformation, and then perform frequency detection. Since the DTMF signal has higher energy only on the fundamental wave, and the speech signal is superimposed with a strong second harmonic on the fundamental wave, the signal receiving module 21 detects the fundamental wave and the second harmonic of the signal. The DTMF signal and the speech signal can be distinguished.

The second multimedia library 22 is configured to store the multimedia file and the file encoding corresponding to each multimedia file; the same multimedia file has the same file encoding in the second multimedia library 22 and the first terminal.

The multimedia processing module 23 is configured to decode the DTMF signal differentiated by the signal receiving module 21 into a corresponding file encoding, and search for a corresponding multimedia file in the second multimedia library according to the file encoding and play.

More specifically, the signal receiving module 21 separates the DTMF signal from the signal sent by the first terminal, and the multimedia processing module 23 determines the corresponding codeword according to the frequency of each DTMF signal, and combines the codewords corresponding to the DTMF signals. Together, that constitutes the file code, the file code is the first end The end user wants the file encoding of the multimedia file that the second end user sees.

The multimedia processing module 23 searches for the corresponding multimedia file in the second multimedia library 22 based on the file encoding. If found, the multimedia processing module 23 plays the multimedia file it finds. More specifically, because the same multimedia file necessarily has the same file encoding in the multimedia library of the first terminal and the second multimedia library 22 of the terminal, the multimedia processing module 23 searches for the obtained multimedia file necessarily with the first terminal user. The multimedia file selected in the media library of the first terminal that is desired to be presented to the terminal user is the same, so the multimedia processing module 23 can directly call and play the multimedia file from the second multimedia library 22 of the terminal.

In the embodiment of the present invention, the terminal does not need to obtain or download the multimedia file to the first terminal or other servers, which not only saves network transmission resources, but also can present the multimedia file to the terminal user more quickly, in real time in the voice call. It can also be fully applied in a strong application scenario.

Preferably, if the multimedia processing module 23 decodes the DTMF signal into a file encoding, there is no corresponding multimedia file in the second multimedia library 22; then the multimedia processing module 23 cannot play the multimedia file to the terminal user. To solve the above problem, the multimedia processing module 23 provided in this embodiment further includes:

The multimedia file is used to obtain the file from the first terminal or the server when there is no multimedia file corresponding to the file encoding of the DTMF signal decoded by the multimedia processing module 23 in the second multimedia library 22. The corresponding multimedia file is encoded, played by the multimedia processing module 23, and stored in the second multimedia library 22. The multimedia file acquisition module 24 can enable the terminal to update its own multimedia library during the call.

The above example shows that the transmission, transmission, and reception process of the DTMF signal from the first terminal to the second terminal can be implemented in the existing communication network. Therefore, the multimedia communication method provided by the embodiment of the present invention is not required to be modified on the existing network. It only adds the DTMF signal parsing function of the terminal, and uses the DTMF signal to combine the emotional multimedia expression with the traditional voice communication method, which brings more emotional experience to the people than the traditional call mode, and enhances the call. Emotional communication, at the same time The current network has not changed, and it will not increase the overhead.

It should be noted that the terminal provided in this embodiment may be combined with the terminal in the previous embodiment (shown in FIG. 6), and each functional module is integrated into one terminal, so that the terminal is

The file code of the multimedia file can be converted into a DTMF signal, and transmitted to other terminals, or can be received; the DTMF signal sent by other terminals is received, and decoded into a file code, and the corresponding multimedia file is called and played in its own multimedia library.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

A multimedia communication method, comprising:

The multimedia communication method according to claim 1, wherein the first terminal determines, according to a user operation, the multimedia file selected by the user in the multimedia library, including:

The multimedia communication method according to claim 1, wherein the multimedia library stores a multimedia file and a file encoding corresponding to each multimedia file; the same multimedia file is in the first terminal and the second terminal; Have the same file encoding;

A multimedia file corresponds to a group of buttons on the first terminal/second terminal, and the file code of the multimedia file is composed of the identifiers of the group of buttons.

The multimedia communication method according to claim 3, wherein the first terminal converts a file of the multimedia file selected by the user into a DTMF signal, and the DTMF signal generated by the file encoding conversion triggers the The DTMF signals generated by a group of buttons corresponding to the multimedia file are identical.

The multimedia communication method according to claim 1, wherein the second terminal decodes the DTMF signal into a file encoding, and invokes and plays a corresponding multimedia in its own multimedia library according to the file encoding. Documents, including: The second terminal distinguishes the DTMF signal from the signal sent by the first terminal, and decodes the DTMF signal into a corresponding file code:

The second terminal plays the multimedia file.

The multimedia communication method according to any one of claims 1 to 5, wherein the second terminal decodes the DTMF signal into a file encoding, and according to the file encoding, in its own multimedia library Calling and playing the corresponding multimedia file, also includes:

If the second terminal decodes the DTMF signal into a file encoding, there is no corresponding multimedia file in its own multimedia library;

7. A terminal, comprising:

The terminal according to claim 7, wherein the first multimedia library comprises: a file storage unit, configured to store a multimedia file, and a file encoding corresponding to each multimedia file; the same multimedia file is in the present The terminal and the second terminal have the same file encoding; a multimedia file corresponds to a group of buttons on the terminal, and the file encoding of the multimedia file is composed of the identifier of the group of buttons;

a file selection unit, configured to present a multimedia file in the multimedia library to the user, and determine a multimedia file selected by the user according to the operation of the user; or determine a file code corresponding to the group of buttons according to a user operation on a group of buttons And determining, according to the file code, the multimedia text selected by the user

The terminal according to claim 8, wherein the encoding processing module comprises: a DTMF signal converting unit, configured to convert a file encoding of a multimedia file selected by a user into

a DTMF signal; the DTMF signal generated by the file encoding conversion is consistent with a DTMF signal generated by triggering a set of keys corresponding to the multimedia file on the terminal;

10. A terminal, comprising:

The terminal according to claim 10, wherein the terminal further comprises: a multimedia file obtaining module, configured to: in the second multimedia library, not corresponding to the file code decoded by the DTMF signal And acquiring, by the first terminal or the server, the multimedia file corresponding to the file encoding, and saving the multimedia file in the second multimedia library.

A multimedia communication system, comprising: a first terminal and a second terminal; the first terminal includes:

An encoding processing module, configured to convert a file encoding of a multimedia file selected by a user into a DTMF letter And sent to the second terminal by the communication connection module, so that the second terminal is according to the

a DTMF signal, calling and playing a corresponding multimedia file from a second multimedia library of the second terminal;

The second terminal includes: