KR100637562B1 - Answering machine for mobile phone and Method for controlling it - Google Patents

Abstract

According to the present invention, a mobile communication terminal having an automatic answering function detects a rest period in which there is no voice, and stops storing in the memory of the terminal in the part and resumes storing in the memory in the section in which the voice is transmitted. An object of the present invention is to provide a memory control apparatus and a method of a mobile communication terminal for efficiently using a memory for storing the data.

To this end, the present invention is to decode the voice data received by the terminal after digital conversion and then compare the decoded data with the comfort noise if the auto-response function is set, and if the comparison result of the comfort noise does not store the unvoiced voice data in the memory And storing voiced voice data in a memory when the noise is not comfort noise, and stopping voiced data in the memory of the terminal in the absence of voice, and storing voiced data in the memory in the section where voice is present. By resuming this, it provides a useful effect of efficiently using the memory for storing the voice message of the other party's sender.

Mobile communication terminal, unvoiced voice, memory, codec, DSP

Description

Answering machine for mobile phone and Method for controlling it}

1 is a block diagram of an automatic answering device embedded in or inside a mobile communication terminal according to an embodiment of the present invention.

2 is a block diagram showing an automatic response function of a digital baseband processing unit and an analog baseband processing unit of the present invention;

3 is a view showing in detail the interior of the comfort noise detection unit of the present invention.

4 is a flowchart illustrating an overall operation flow according to a memory control method of a mobile communication terminal according to an embodiment of the present invention.

The present invention relates to a memory control device and a method of a mobile communication terminal, and more particularly, a mobile communication terminal having an auto-response function detects a rest period in which there is no voice, and stops the operation of storing the data in the memory of the terminal. The present invention relates to a memory control apparatus and a method of a mobile communication terminal for efficiently using a memory for storing a sender's voice message by resuming the operation in the memory section.

Many auto-response functions currently implemented in mobile communication terminals store the sender's sender's voice message in the base station. When the sender wants to hear the voice message left by the sender, he makes a request (call) to the base station and stores the voice message stored in the base station. You must listen.

 As described above, the user of the conventional mobile communication terminal must bear a service usage fee in order to receive various voice services provided by the mobile communication terminal service provider through the base station, and also call the service provider to check the received voice message. There was a problem in that the burden on the user's additional service usage fee, such as the communication fee should be paid.

In addition, in the environment where the receiver's terminal cannot find the base station signal, the receiver cannot hear the sender's message. Therefore, in order to solve the disadvantage, an auto-response function can be used regardless of the base station. The voice message of the other party is stored in the internal memory of the terminal.

 In a mobile communication terminal having an auto-response function for storing the sender's voice message in its own mobile communication terminal, not the base station, the sender's message needs to be continuously stored for a predetermined time, thereby causing a problem of occupying too much memory of the limited terminal.

However, when actually analyzing the stored voice message, the data in the absence or rest period occupies a considerable part, and this part does not need to be stored in the memory of the terminal.

Therefore, when the rest period without voice is detected and the portion is stopped in the memory of the terminal, the memory can be saved.

Therefore, the present invention has been proposed to solve the above-mentioned problems, and the mobile communication terminal having an auto-response function detects a rest period without voice, and stops the operation of storing the portion in the memory of the terminal at that portion. It is an object of the present invention to provide a memory control apparatus and a method of a mobile communication terminal for efficiently using a memory for storing a sender's voice message by resuming the operation in the memory.

In order to achieve the above object, the present invention provides an automatic answering device for a mobile communication terminal, comprising: a DSP for digitally processing voice data input from a voice codec and converting the voice data into numerical data; A voice sensing unit for receiving a processing signal of a DSP, detecting a section in which there is no voice, stopping the operation of storing the voice in the voice memory, and resuming storing in the voice memory in the section of the voice; And a controller having a ROM for storing a control program for an auto answering function and a RAM for temporarily storing data generated during the program execution.

The automatic answering device is embedded in a mobile communication terminal or a peripheral device of the terminal, and the silent detector comprises a comfort noise detector provided between the voice decoder and the voice memory of the DSP, and the comfort noise detector comprises the voiceless voice data. And voiced voice data are compared and added in units of bits, and the addition result of each bit is added to distinguish between voice and voice.

A method of controlling an automatic answering device for a mobile communication terminal, the method comprising: after digital conversion of the voice data received by the mobile communication terminal and decoding, and if the automatic answering function is set, comparing the decoded data with the comfort noise; In this case, the method may include storing voice voice data in the memory if it is not comfort noise without storing voice voice data in the memory.

If the auto-response function is not set, processing the voice data without storing the memory in the memory, and comparing the decoded data with the comfort noise compares the decoded data and the comfort noise in units of bits.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating an automatic answering device embedded in a mobile communication terminal or a peripheral device according to an exemplary embodiment of the present invention.

The automatic answering device is mainly configured inside the mobile communication terminal, but in some cases, the automatic answering device may be built in a peripheral device of the mobile communication terminal such as a charging device for charging the mobile communication terminal.                     

Referring to FIG. 1, the control unit 100 temporarily stores a ROM for storing a program that collectively controls the overall operation of an automatic answering device embedded in a mobile communication terminal or a peripheral device, and temporarily stores data generated during the execution of the program. And a ram for the same.

The digital signal processor (DSP) 110 digitally processes the voice data input from the voice codec 120 and converts the voice data into numerical data.

The audio memory 130 stores a voice guidance message for the auto answering function and a voice message received from the sender.

The key input unit 140 includes a plurality of function keys including an auto answer mode key for setting an auto answer mode for a voice mail service in an auto answering device embedded in a terminal or a peripheral device. The generated key data is transmitted to the controller 100.

The LCD display unit 150 displays an operation state of the answering machine provided from the control unit 100.

The microphone 121 applies a voice signal input from the user to the voice codec 120, and the speaker 122 outputs the voice signal output from the voice codec 120 to the outside of the answering machine.

The voice codec 120 is connected to the DSP 110 and digitizes the analog signal and converts it into data that is easy for signal processing or converts the digitized data into an analog signal and outputs the converted signal.                     

The silent detection unit 160 detects a rest period without a voice in an automatic answering device embedded in a mobile communication terminal or a peripheral device, and stops storing the portion in the voice memory 130 at that portion, and in the section with a voice, a voice. The operation of storing the memory 130 is resumed.

In the standard of the mobile communication terminal (for example, the GSM standard), there is a function that does not transmit when there is no voice of the other party during a general voice call.

This function is referred to as DTX (Discontinuous Tx), and does not transmit voice data continuously, but only discontinuously transmits a portion of voice.

In this section where voice data is not transmitted, Comfort Noise is generated inside the mobile communication terminal.

If there is no sound while not speaking during the transmission and reception of the terminal, the user is in a chaos and falls into chaos, thereby generating natural noise, and the silent detection unit 160 detects and processes it.

The RF processor 170 converts an RF signal including voice data and image data from a transmitting and receiving terminal of the terminal into a wireless signal and transmits the signal to a base station through an antenna, and receives an RF signal from the base station and receives an intermediate frequency (IF) signal. Converted to and transmitted to the control unit 100.

FIG. 2 is a block diagram illustrating an automatic response function of a digital baseband processor and an analog baseband processor of the present invention. The analog baseband processor 210 is an RF processor 170 of FIG. ) And the analog baseband of the voice codec 120 in detail, and the digital baseband processor 220 shows the DSP 110, the voice memory 130, and the unvoiced detector 160 of FIG. 1 in detail. will be.

The voice message of the other party received through the antenna ANT is converted into a digital signal through a downlink analog-to-digital converter (Downlink ADC) 212 in the analog baseband processor 210 and is transmitted to the digital baseband processor 220. .

In the digital signal processor (DSP) 230 inside the digital baseband processor 220, the voice data is subjected to speech decoding by the voice decoder 232, and then the auto answer function is turned on / off. According to the operation, it is stored in the voice memory receiver (Rx) 250 via the comfort noise detector 240 or directly transmitted to the audio reception (Rx) processor 213 of the analog baseband processor 210. It is converted into an analog signal and then output to the outside through the speaker SPK.

In the part of the voice data, in which the voice of the other party is actually loaded, it is stored in the voice memory Rx 250 or is directly transmitted to the audio receiving processor 213, converted into an analog signal, and then output to the outside through the speaker SPK. If there is a rest period without a voice in which the other party's voice is not present, the comfort noise detector 240 detects the rest period without the voice, and stops the operation of storing the voice rest section in the voice memory receiver 250. In the section where the voice is present, the memory for storing the voice message of the other party is efficiently used by resuming the operation in the voice memory receiver 250.

On the other hand, the voice signal of the terminal user (receiver) is input through a microphone (MIC), converted into a digital signal by the audio transmission (Tx) processor 214 of the analog baseband processor 210, and then stored in the voice memory transmitter 260. Alternatively, an analog signal is converted by the uplink digital analog converter (DAC) 211 of the analog baseband processor 210 through the voice encoder 231 of the DSP 230 and then output to the outside through an antenna ANT. do.

FIG. 3 is a detailed view of the interior of the comfort noise detector of the present invention, and illustrates a pattern of comfort noise.

In FIG. 3, the voice data B0 to B259 are the comfort noise patterns 241, and are unvoiced data detected by the comfort noise detector, and are compared with the input voice data A0 to A259 and 242 in bit units. It is.

In the standard of the mobile communication terminal, the voice data 242 is processed in units of 260 bits of 20 m sec.

The comparison is performed by adding 243 bit by bit to add up all the addition results of each bit (244). If the input voice data 242 is comfort noise, the final addition result will be "0" and the The case will have a different pattern than the comfort noise, so it will have a value other than "0".

The result of the comparison with the comfort noise is determined to determine whether the input data is voice or noise, and switching (245) whether to store the data in the voice memory 250.

FIG. 4 is a flowchart illustrating an overall operation flow according to a memory control method of a mobile communication terminal according to an embodiment of the present invention. When operation is started, downlink DAC 212 converts analog voice data of a counterpart received through an antenna ANT of the terminal. (401) is converted into digital data and then decoded (402) by the voice decoder (232) of the DSP (230).

After decoding (402), the current terminal determines whether the auto answer function is set (403), and if the auto answer function is not set, the voice codec is directly stored without storing the decoded voice data in the voice memory receiver (250). The audio signal is processed by the audio receiving processor 213 and then output to the outside of the terminal through the speaker SPK.

As a result of the determination (403), if the auto answer function is set, the decoded voice data is compared with each other in terms of comfort noise and bit units (405).

The decoded voice data is compared with the comfort noise (405), and then it is determined whether the comparison result is comfort noise (voiceless voice data) (406), and if not the comfort noise, stored in the voice memory receiver 250 (407), If the determination result 406, the comfort noise is not stored in the voice memory receiver 250 (408).

If it is determined that all received voice data has been processed (step 409), if it has not been processed yet, the process proceeds to the step of comparing the decoded voice data (405) and iteratively processed. The audio data is transmitted to the audio receiving processor 213 to process the audio signal 410, and then output 411 to the outside of the terminal through the speaker SPK.

As described in detail above, the present invention detects a rest period without voice in a mobile communication terminal having an auto-response function, and stops the operation of storing the unvoiced data in the memory of the terminal in the portion and the voice data in the section with voice. By resuming the storing operation in the memory, it provides a useful effect of efficiently using the memory for storing the voice message of the other party's sender.

Claims (7)

In the answering machine for mobile communication terminal, A DSP for digitally processing voice data input from the voice codec and converting the voice data into numerical data; A voice sensing unit for receiving a processing signal from the DSP, detecting a section in which there is no voice, stopping the operation of storing the voice in the voice memory, and resuming storing in the voice memory in the section of the voice; And a control unit having a ROM for storing a control program for an auto-response function and a RAM for temporarily storing data generated during the execution of the program. The method according to claim 1, The automatic answering device is an automatic answering device for a mobile communication terminal, characterized in that embedded in the mobile communication terminal. The method according to claim 1, And the silent detector comprises a comfort noise detector provided between a voice decoder and a voice memory of a DSP. The method according to claim 3, And the comfort noise detection unit compares and adds the unvoiced voice data and the voiced voice data by bit to add the sum result of each bit to distinguish between unvoiced and voiced. In the method for controlling an automatic answering device for a mobile communication terminal, Digitally converting and decoding the voice data received by the mobile communication terminal, and then comparing the decoded data with comfort noise if the auto answer function is set; And storing voice voice data in the memory if the voice noise is not comfort noise, and storing voice voice data in the memory, if the comparison noise results in comfort noise. delete The method according to claim 5, And comparing the decoded data with the comfort noise comprises comparing the decoded data with the comfort noise in units of bits.

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