KR970002346B1 - Moving radio telephone - Google Patents

Abstract

An information message, stored in a memory(401) as voice data will be converted into an analog voice signal at a VSELP decoder(208) through a SW5, and will be transmitted from a modem transmitter thru SW2, SW8, SW4, and SW3 to a FM transmitter. In case the listener of the information message of the user leaves reply message, a DTMF signal will be transmitted. In case the DTMF signal is inputted, a control system(205) stops the transmission of the information message and in case the counter part does not transmit the DTMF signal, it will judge whether the counter part is finished with the communication or not.

Description

Absence guidance device of mobile wireless telephone

1 is a block diagram showing an embodiment in the related art.

2 is a block diagram according to the present invention.

3 is a detailed circuit diagram of FIG. 3 in accordance with the present invention.

4 is a block diagram specifically showing the modem of FIG.

FIG. 5 is a block diagram specifically showing the memory device of FIG.

6 is a flow chart for setting a guide message recording mode according to the present invention.

7 is a flow chart setting guide message confirmation board according to the present invention.

8 is a flow chart for setting a missed announcement message and a counterpart message recording mode according to the present invention.

9 is a flowchart of setting a counterpart message playback mode according to the present invention.

The present invention relates to a missed guidance device for a mobile wireless telephone, and in particular, to automatically provide a guide message for a call request from a counterpart when a user is absent, to store a response message of the counterpart accordingly, and to be transferred to a user later. The present invention relates to a missed guidance device in a wireless telephone.

Mobile radio telephones generally used include a car phone mounted on a car, a mobile phone that a user can carry, and the like.

Recent mobile radiotelephones are designed to automatically send guide messages as needed even when the user is absent or to have an automatic response capable of recording a delivery message of the other party in itself.

1 is a block diagram of a mobile radio telephone having a conventional answering machine.

In FIG. 1, the circuit for performing the auto-response function is an internal circuit of reference block 100 indicated by a dotted line. The guide message is stored in the first memory 10 in the form of a specific parameter, and the counterpart's response or message is stored in the second memory 4.

The automatic response operation of FIG. 1 will be described. When a call is received from the other party in the absence of the user, the control device 7 sends data to the voice synthesizer 11 to transmit the stored contents. The voice synthesizer 11 receiving this data synthesizes certain parameters (amplitude, frequency, timbre information, etc.) already stored in the first memory 10 by the LPC (Linear Predictive coding) method to generate the first low pass filter 12. ) To remove the noise of the high-frequency component to deliver a message to the other party through the radio transmitter (1). The other party sends a voice or DTMF in response to this message. The other party's voice is transmitted to the speech analysis synthesizer 3 by removing the high frequency noise from the second low-pass filter 2, and the speech analysis synthesizer 3 analyzes the transmitted speech by ADM (Adaptive Delta Modulation) and stores the second memory. Store in

However, since the characteristic parameter values stored in the first memory 10 cannot be changed at will by the user, the first memory can be changed only by using a predetermined device that changes the voice into characteristic parameter values such as amplitude, frequency, and tone information. 10 can be stored. That is, the conventional invention technology is often inconvenient because it can only guide broadcast within some message limits already defined in the first memory 10. In the announcement broadcast, the voice synthesizer 11 synthesizes a voice and the voice recording and reproduction of the other party's voice have a dual system in which the voice analysis synthesizer 3 analyzes and synthesizes the voice.

Representative prior arts that solve these problems are disclosed in detail in Korean Patent Application No. 91-8596 (name: Missing Guidance Device for Mobile Radiotelephones), which was invented by Park Sang-yoon and others and patented by the present applicant.

In the above-described conventional application, the user's voice recording, guide broadcasting, counterpart voice recording, and counterpart voice reproduction are performed by a voice analysis synthesizer using the same ADM method, and the guide broadcast can be changed as desired by the user. Since the broadcasting and the other party's voice recording are made by a single voice analysis synthesizer and a memory, there is an advantage that the circuit configuration can be efficiently performed.

However, the above-mentioned missed guidance device of the mobile radiotelephone device of the present invention is suitable for the analog method and has a disadvantage in that it cannot be used in dual mode, that is, analog and digital mode.

It is therefore an object of the present invention to provide a mobile wireless telephone having an automatic answering function in the absence of a user.

Another object of the present invention is to provide a mobile wireless telephone which can change a user's guidance message sent at the time of the call of the other party in an automatic response.

Still another object of the present invention is to provide a mobile wireless telephone capable of automatic answering, to change a user's information message arbitrarily, and to be applicable to both digital and analog methods.

The present invention for achieving the above object is a duplexer which is connected to one antenna to use the transmission and reception in common, and to protect the receiver from the transmission output when transmitting and to supply the received signal to the receiver when receiving; A wireless receiver connected to the duplexer and receiving an RF signal; A wireless transmitter connected to the duplexer for inputting a signal to be transmitted and transmitting the RF signal; A receiver for outputting an analog voice signal through an analog demodulation means when the RF signal received from the radio receiver is in an analog mode, and outputting digital voice data through a digital demodulation means and a channel decoder when the RF signal is in an analog mode; And a modem having a transmitter for transmitting a signal through an analog modulation means when the input signal is an audio signal in an analog mode, and switching the mode through a channel encoder and a digital modulation means when the input signal is voice data in a digital mode. A voice signal generator for converting the output of the modem receiver into an analog voice signal and directly applying the signal to an audio receiver, and converting the output of the modem receiver into an analog voice signal and converting the analog voice signal into an audio receiver; A voice signal converter for converting an analog voice signal input from the audio transmitter and / or a voice signal generator into digital voice data; A DTMF signal receiver connected to an output of the voice signal generator to receive a DTMF signal transmitted by the other party; A memory device capable of reading and writing data according to a user guide message and a response message of a counterpart; According to the mode of the other party's signal input, the mode switching operation of the modem, the read operation or the write operation of the memory device, the voice signal generator and the voice signal converter, and controls the DTMF signal from the DTMF signal receiver And a control device for performing the operation control according to the present invention.

Hereinafter, preferred embodiments of the present invention for achieving the above object will be described in detail with reference to FIGS. 2 to 9. According to the following description, the present invention will be understood and fully implemented by those skilled in the art. Also, the construction and function of well-known circuits in general are not described in detail so as not to obscure the features of the present invention.

2 is a block diagram according to the present invention, which is a block diagram showing the configuration of a mobile radiotelephone having an out-of-office guide device operable in dual mode.

Referring to the configuration of FIG. 2, a duplexer 201 having a reception Rx terminal and a transmission Tx terminal connected to one antenna ANT and shielded from each other, and an RF signal connected to the Rx terminal of the duplexer 201 A wireless receiver 202 for receiving, a wireless transmitter 203 connected to the Tx terminal of the duplexer 201 and inputting a signal for transmitting an RF signal to be transmitted as an RF signal, and an audio receiver for listening to an audible sound to a user 209 and an audio transmitter 210 for inputting a user's voice, and when the RF signal received from the radio receiver 202 is in an analog mode, an analog voice signal is output through an analog demodulation means, and the RF signal is in a digital mode. Is a mode for switching the mode and outputting digital voice data through the digital demodulation means and the channel decoder, and the analog signal when the input signal is an audio signal in analog mode. Tank means for transmitting input signals and the transmission modem 204 has a transmitting unit that via a channel encoder and a digital modulating means when the mode transition to the audio data in the digital mode in which the through and; When the output of the modem 204 receiver is an analog voice signal, it is directly applied to the audio receiver 209. When the output of the receiver is digital voice data, the voice signal generator 208 converts the analog voice signal and transmits the analog voice signal to the audio receiver. )Wow; A voice signal converter 207 for converting analog voice signals input from the audio transmitter 210 and / or the voice signal generator 208 into digital voice data; A DTMF receiver 211 connected to an output terminal of the voice signal generator 208 and receiving a DTMF signal transmitted by the other party; A memory device 206 capable of reading and writing data according to a user's guide message and a counterpart's response message; The mode switching operation of the modem 204 and the reading operation or the writing operation of the memory device 206 are controlled according to the mode of the counterpart signal inputted, and the voice signal generator 208 and the voice signal are set according to the set mode. A control unit 205 is configured to control the conversion unit 207 and receive a DTMP signal from the DTMF receiver 211 and perform operation control accordingly.

The receiver of the modem 204 has an analog demodulation means and a digital demodulation means, and the transmitter has an analog modulating means and a digital demodulating means, and is controlled by the control device 205 and is switched mode (analog mode to digital mode or digital mode). To analog mode). Representative examples of the analog signal demodulation means and the modulation means are a frequency (Frequen cy Modulation) receiver and a transmitter. Further examples of the digital modulation means and demodulation means include a π / 4-DQPS (Differential Quadrature Phase Shift Keying) transmitter and a receiver. The π / 4-DQPSK receiver is a device for demodulating the input RF digital signal and outputting the digital voice data, and the π / 4-DQPSK transmitter is a device for modulating and transmitting the input digital voice data. to be. The π / 4-DQPSK receiver and transmitter are described in detail in Korean Patent Application No. 92-1898 (Title: π / 4-DQPSK Transmission Method and Apparatus) invented by the inventor Park Sang-yun and assigned to the present applicant.

The voice signal generator 208 and the voice signal converter 207 bypass the input signal if the input signal is an analog mode, and generate analog voice signals and digital voice data through a digital voice encoder, respectively, in the digital mode. Let's do it. That is, the voice signal generator 208 converts the voice data in the digital mode into the voice signal in the analog mode, and the voice signal converter 207 converts the voice signal in the analog mode into voice data in the digital mode. .

As a representative example of the digital voice encoder, a VSELP decoder (Vector Sum Excite d Linear Prediction Decoder) may be mentioned. A detailed description of the VSELP decoder is described in US Patent No. 4,8 17,157, invented by A.Gerson et al. (Title: DIGITAL SPEECH CODER HAVING IMPROVED VECTOR) EXCITATION SOURCE).

The memory device 206 has a memory device (for example, DRAM) capable of a read operation and a write operation, and stores or outputs a user's guide message and / or a response message of the other party. Will have

The controller 205 analyzes the incoming call from the other party to determine whether the other party's RF signal is in analog mode or digital mode, and accordingly, the modem 204, the voice signal generator 208, and the voice signal. The conversion unit 207 is controlled to make a call. In addition, during the automatic response, the modem 204, the voice signal generator 208, the voice signal converter 207, and the memory device 206 are controlled to send the stored guide message and to receive and store the response message of the other party. do.

3 is a specific circuit diagram of FIG. 2 according to the present invention, which is a block diagram embodied using a switching element.

Referring to the configuration of FIG. 3, a duplexer 201 is connected to one antenna ANT to make transmission and reception common, and protects the receiver from the transmission output when transmitting and supplies the received signal to the receiver when receiving; A wireless receiver 202 connected to the Rx terminal of the duplexer 201 and receiving an RF voice signal or an analog data, and a Tx terminal of the duplexer 201 and an audio signal Mode or voice data (Digital Mode) and the RF transmitter 203 for transmitting an RF signal, and when the RF signal input from the radio receiver 202 is a digital mode modulated through the π / 4-DQPSK receiver A receiver for outputting voice data through a post channel decoder and outputting a voice signal through an FM receiver when the RF signal is in analog mode, and a channel encoder and π / when the input signal is in digital mode. A modem 204 comprising a transmitter for modulating through a 4-DQPSK transmitter and transmitting to the wireless transmitter 203 and transmitting to the wireless transmitter through an FM transmitter when the input signal is in an analog mode, and the output of the modem receiver is In the analog mode, the audio signal path is switched to the audio receiver 209. In the digital mode, SW1 connects the voice data to the VSELP decoder, and the VSELP decoder decodes the digital voice data and converts it into an analog voice signal. 208 and SW2 for transmitting the audio signal restored in the VSELP-decoder 215 to the audio receiver 209 in the analog mode, and filtering the audio signal supplied from the SW2. an audio receiver 209 for filtering and delivering to the user, and an audio transmitter for receiving and filtering the voice of the user and sending the same to the SW4 ( 210), SW4 for transmitting a voice signal to the VSELP encoder in the digital mode, and SW3 for transmitting the voice signal to the SW3 in the analog mode, and a VSELP encoder 207 for converting the signal received from the SW4 into the voice data in the digital mode; In analog mode, SW4 transmits a voice signal to the transmitter of the modem 204 and transmits the voice data passed through the VSELP encoder 207 in the digital mode, and receives an input signal from the audio receiver 209. DTMF receiver 211 which decodes when a tone is received and transmits the data to the control unit 205, controls the modem, controls SW1, SW2, SW3, and SW4 appropriately for analog or digital mode, A control device 205 for controlling data input / output operations of the 206 and receiving data from the DTMF receiver 211 and a memory device 206 capable of reading and writing data and controlled by the control device 205. It becomes bait.

4 is a block diagram of the modem 204 of FIG. 3, and FIG. 5 is a block diagram of the memory device 206 of FIG.

6 is a flow chart for setting a guide message recording mode according to the present invention.

7 is a flow chart illustrating a guide message confirmation mode setting according to the present invention.

8 is a flow chart for setting the missed announcement message and the other party message recording mode according to the present invention.

9 is a flowchart of setting a counterpart message playback mode according to the present invention.

The automatic response function of FIG. 3 will be described with reference to FIGS. 4 to 9. At this time, there are various operation processes, for convenience of description, the operation mode of the control device will be described by specifying an operation mode as shown in Table 1 below. Therefore, the following operation description will be described with reference to Tables 1 and 3 to 9 below. In Table 1, the switch marked with X in each mode is independent of the operation of the mode, i.e., a don't care, and the switch marked 1-2 or 1-3 indicates input terminal 1 And output terminal 2 or output terminal 3 connection.

First, referring to FIG. 6, the user looks at the mode ① for recording a guide message. At this time, the user's voice is converted into digital voice data by the audio transmitter 210 and the VSELP encoder 207 and stored in the memory 401. The switch control operation performed by the control device to perform mode ① is shown in Table 1.

Next, the mode ② in which the user checks the contents of the guide message will be described with reference to FIG. 7. At this time, when the voice data of the memory 401 is converted into a voice signal through the SW5 and VSELP decoder 208 and input to the audio receiver 209 via the SW2, the recorded guide message is reproduced. Table 1 shows the switch control operation performed by the control device to perform mode ②.

Next, referring to FIG. 8, an auto-answer mode for transmitting a guide message and recording a response message when a call is received from the other party will be described. At this time, when the other party's telephone signal is input in analog mode, mode ③ and mode ④ are performed when digital mode is input.

When a call comes in, it checks whether auto answer mode is set. The auto answer mode is set by the user. When the auto answer mode is set, the control unit 205 determines whether the received signal of the other party is an analog mode or a digital mode. The mode ④ in Table 1 is used in the analog mode, and the mode ④ in Table 1 is used in the digital mode. By controlling the switch to perform the control to output a guide message to the memory device (401).

In the above mode ③, the announcement message is transmitted from the VSELP decoder 208 to the analog voice signal through the SW5, SW2, SW8, SW4 and SW3 from the modem transmitter to the FM transceiver via SW5. It is sent out.

In the mode ④, the voice message stored in the memory 401 is transmitted to the channel encoder and the π / 4-DQPSK receiver of the transmitter 204 of the modem 204 via SW5, SW6, and SW3 to the counterpart. do.

When the other party hears the user's guide message and wants to leave a response message, the other party transmits the DTMF signal. When the DTMF signal of the other party is input, the control unit 205 stops the transmission of the guide message. ⑥ If the other party does not transmit DTMF signal, it determines whether the other party terminated the call (hanging up).

In the mode ⑤, the analog voice signal message of the counterpart is converted into digital voice data by the VSELP encoder 207 through SW1, SW2, SW8, and SW4 and stored in the memory 401 through SW7. In addition, the mode ⑥ stores the digital voice data message of the counterpart in the memory 401 through SW1, SW6, and SW7. In mode (5) or mode (6), the control unit 205 checks whether the counterpart message is over during execution, and terminates the call at the end of the counterpart message. The switch operating conditions performed in the control device to perform the mode ③-mode ⑥ are shown in Table 1 above.

Next, referring to FIG. 9, the mode ⑦ in which the user plays the other party's message recorded on the telephone will be described. At this time, when the other party message reproduction mode is designated, the other party message stored in the memory 401 through SW1 is converted into an analog voice signal by the VSELP decoder 208 and inputted to the audio receiver 209 via SW2 to be reproduced. The operating conditions of the switch performed by the control device to perform the mode ⑦ are shown in Table 1.

Accordingly, an object of the present invention is to provide a mobile wireless telephone capable of automatically responding in the absence of a user, to change a guide message arbitrarily, and to transmit and receive data in a digital and analog manner.

In addition, since the above-described operations are possible only by the switching operation between the constituent means and configuring the system using a conventional circuit, without the production of a specific specific circuit, the configuration of the control device 205 is greatly facilitated.

In addition, when storing the announcement message in the memory, by adopting the VSELP method having a data reduction function to store the announcement message, the amount of data to be stored in the memory also has the advantage.

6 to 9 in the description of the above embodiment, the control procedure may be implemented using an ASIC device such as a mask ROM, a gate array, or the like without using a control device, and C-language. It may be achieved by programming using a programming language such as).

As described above, the missed guidance device of the mobile wireless telephone according to the present invention can change the contents of the guidance message sent by the automatic response when the other party calls the user in the absence of the user, and in the present invention, VSELP (Vector Sum Exited) By adopting the Linear Perdiction method, the amount to be memorized is reduced, and it can be usefully applied in dual mode mobile phones (Analog and Digital).

Claims (1)

A mobile radio telephone, comprising: a duplexer connected to one antenna to use transmission and reception in common, and to protect the receiver from a transmission output when transmitting and to supply a received signal to the receiver when receiving; A wireless receiver connected to the duplexer and receiving an RF signal; A wireless transmitter connected to the duplexer and transmitting an RF signal by inputting a signal to transmit; When the RF signal received from the wireless receiver is an analog mode, an analog audio signal is output through an analog demodulation means, and when the RF signal is a digital mode, a mode is switched and the digital signal is inputted through a digital demodulation means. A modem having a transmitter for transmitting a signal through an analog modulation means when the signal is an audio signal in an analog mode and switching the mode when the input signal is voice data in a digital mode; A voice signal generator for directly applying to the audio receiver when the output of the modem receiver is an analog voice signal and converting the analog voice signal into an audio receiver when the output of the modem receiver is digital voice data; A voice signal converter for converting an analog voice signal input from the audio transmitter and / or a voice signal generator into digital voice data; A DTMF signal receiver connected to an output of the voice signal generator to receive a DTMF signal transmitted by the other party; A memory device capable of reading and writing data according to a user guide message and a counterpart response message; According to the mode of the other party signal input, the mode switching operation of the modem and the read or write operation of the memory device and the voice signal generator and the voice signal converter are controlled, and the DTMF signal is received from the DTMF signal receiver. A mobile radio telephone comprising a control device for performing operation control.