JPH0998228A - Mobile phone device and received voice processing method thereof - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: A mobile phone device has a problem that it does not have a recording function and is inconvenient, and a mobile phone device capable of recording a received voice without impairing portability and a received voice recording thereof. Provide a processing method. An MPU including a writable memory 8 is provided.
When a recording instruction is input from the recording / playback key 7, the read voice data is read from the receive buffer 3 via the bus control unit 4 and the receive voice data is stored in the memory 8 as the recorded data to receive the voice. Recorded, and also MPU6
However, when receiving a reproduction instruction from the recording / reproduction key 7, the reproduction instruction flag in the bus control unit 4 is set and the reception voice data stored in the memory 8 is transferred to the reception buffer 3 for voice encoding. The processing device 5 is a mobile phone device for recognizing a reproduction instruction flag and converting the recorded data in the reception buffer 3 into a voice and outputting the voice, and a received voice recording processing method thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile phone device used for mobile communication, and more particularly to a mobile phone device capable of recording received voice without impairing portability and a received voice processing method thereof.

[0002]

2. Description of the Related Art Public telephone mobile telephone systems represented by car telephones, mobile telephones and cordless telephones are rapidly becoming popular at present, and the added value of mobile telephone devices is required. In particular, the digital portable telephone device has a feature that noise is difficult to enter because voice data is digital data, and data communication services using a fax machine or a personal computer are also provided.

A conventional mobile phone device will be described with reference to FIG. FIG. 8 is a configuration block diagram of a conventional mobile phone device. As shown in FIG. 8, the conventional mobile phone device is
A demodulation unit 1 that demodulates a radio wave received by an antenna and converts it into reception digital data, and a reception buffer 3 that extracts reception voice data from the reception digital data from the demodulation unit 1.
, A channel coding unit 2 for extracting the transmission voice data from the transmission buffer 12 and assembling it into a transmission format, a reception buffer 3 for temporarily storing the reception voice data, and a PDC (Personal Digital Cellular).
) System voice encoding and decoding, a voice encoding processing unit 5 ′, a μ-Low codec unit 9 which performs digital / analog conversion of received voice and analog / digital conversion of transmitted voice, and outputs received voice. Receiver 10,
The microphone 11 for inputting the transmission voice, the transmission buffer 12 for temporarily storing the transmission voice data encoded by the voice encoding processing unit 5 ', and the transmission data converted by the channel coding unit 2 are converted into analog and modulated. However, the modulation unit 13 sends the signal to the antenna.

The operation of the mobile phone having the above configuration is shown in FIG.
This will be described with reference to FIG. First, when receiving,
The radio wave from the base station received by the antenna is demodulated by the demodulation unit 1, the voice data is extracted by the channel coding unit 2 and stored in the reception buffer 3.
Then, the voice encoding processing unit 5'provides the reception buffer 3
Audio data is extracted from the audio data, is audio-decoded, is further digital / analog converted in the μ-Low codec unit 9, and is received as audio (downstream audio) by the receiver 10
Output from

Further, during transmission, when voice (upstream voice) is input from the microphone 11, the μ-Low codec unit 9 performs analog / digital conversion and voice encoding is performed in the voice encoding processing unit 5 ', It is stored in the transmission buffer 12 as transmission voice data, converted into a transmission data format in the channel coding unit 2, modulated in the modulation unit 13, and transmitted from the antenna.

Conventionally, as a domestic telephone, there is a telephone having a function of recording voice using a magnetic tape or an IC, but a portable telephone device other than a household cordless telephone has a recording function. There was no.

[0007]

However, since the above-mentioned conventional portable telephone device does not have a recording function, the writing instrument should be taken out each time when an important message is received while on the go. However, there was a problem that it was inconvenient.

Further, the magnetic tape used in the analog cordless telephone has a problem that it is not suitable as a recording medium used in a small digital portable telephone device because it is difficult to make the magnetic tape compact and lightweight.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a portable telephone device capable of recording a received voice without impairing portability and a received voice processing method thereof.

[0010]

The invention according to claim 1 for solving the problems of the above-mentioned conventional example is a reception buffer for storing reception voice data, a transmission buffer for storing transmission voice data, and a voice data. In a mobile phone device having a voice encoding processing unit for performing encoding and decoding of a voice, a voice output unit for outputting voice, and a voice input unit for inputting voice, received voice data is stored as recording data in frame units. Memory, a playback instruction flag set at the time of playback and reset at the end of playback, a recording key for inputting an instruction to record the received voice data, a playback key for inputting an instruction to play the recording data, and the recording key In response to a recording instruction from, the reception voice data from the reception buffer is stored in the memory as recording data in units of frames, and recording is performed. A voice-encoding processor, which sets the reproduction instruction flag in response to a reproduction instruction, reads the recorded data from the memory, transfers the recording data to the reception buffer, and resets the reproduction instruction flag when reproduction is completed. Is a voice encoding processing unit that recognizes the set of the reproduction instruction flag and decodes and reproduces the recorded data transferred and stored in the reception buffer, without impairing portability, Received voice can be recorded.

According to a second aspect of the present invention for solving the problems of the conventional example, in the received voice processing method of the portable telephone device according to the first aspect, when a recording instruction is input from the recording key, the control unit is operated. However, it is characterized in that the received voice data is read from the reception buffer frame by frame and stored in the memory as recorded data for recording, and the received voice can be recorded without impairing portability.

According to a third aspect of the present invention for solving the above-mentioned problems of the conventional example, in the received voice processing method of the portable telephone device according to the first aspect, when a reproduction instruction is input from the reproduction key, the control unit is operated. Sets the reproduction instruction flag, transfers the recording data from the memory to the reception buffer in frame units, and the voice encoding processing unit recognizes the reproduction instruction flag and finishes the processing of decoding the recording data in the reception buffer. Then, the reproduction instruction flag is reset, and the received voice can be recorded without impairing portability.

[0013]

Embodiments of the present invention will be described with reference to the drawings. A mobile phone device and a received voice processing method thereof according to an embodiment of the present invention are provided with a writable memory as a recording medium, and an MPU writes voice data in the memory to record the voice data. By taking out and reproducing as voice, a mobile phone device with a received voice recording function having excellent portability is realized.

FIG. 1 is a block diagram showing the configuration of a portable telephone device (present device) according to an embodiment of the present invention. Note that portions having the same configuration as in FIG. 8 are described with the same reference numerals. As shown in FIG. 1, the basic configuration of this device is as follows.
This is the same as the conventional mobile phone device shown in FIG. 8, and as the same parts as the conventional one, the demodulation unit 1, the modulation unit 13, the channel coding unit 2, the reception buffer 3, the transmission buffer 12, and the μ- Low codec unit 9, receiver 10 as voice output unit, and microphone 11 as voice input unit
As a characteristic part of the present device, a bus control unit 4 for performing data bus control, a voice encoding processing unit 5, a recording / playback key 7 for inputting recording and playback instructions, and voice data are provided. Memory 8 for storing and MPU for storing audio data in the memory 8 based on an instruction from the recording / playback key 7.
6 is provided.

The reception buffer 3, MPU 6, memory 8 and voice coding processing section 5 are connected by a data bus 15 via a bus control section 4. Data bus 15
The microprocessor data bus 15a, which is a data transmission path to the MPU 6, the buffer data bus 15b, which is a data transmission path connected to the reception buffer 3 and the transmission buffer 12, and the data to the audio encoding processing unit 5. A digital signal processor data bus 15c, which is a transmission line, is provided.

Next, the features of the present apparatus will be specifically described. The bus control unit 4 performs bus control of a data bus that connects the reception buffer 3 and the transmission buffer 12, the memory 8, the MPU 6, and the voice encoding processing unit 5. For example, the voice encoding processing unit 5 and the MPU 6 are connected to the reception buffer 3 via the bus control unit 4 and read the reception voice data in the reception buffer 3. Further, the transmission voice data from the voice encoding processing unit 5 is the bus control unit 4
The data is stored in the transmission buffer 12 via.

Based on a recording instruction from the recording / playback key 7, the MPU 6 receives the reception buffer 3 via the bus control unit 4.
Performs the recording process to store the voice data in the memory 8
Also, based on a reproduction instruction from the recording / reproduction key 7, a reproduction process of reading the audio data stored in the memory 8 is performed. Particularly, in the reproduction process, a flag read instruction signal is sent to the audio encoding processing unit 5. The operation of the MPU 6 will be described later in detail.

The recording / playback key 7 is an input key for the user to input instructions such as recording, playing, and stopping.
It is connected to PU6. Then, when a recording or reproducing instruction is input from the recording / reproducing key 7, the instruction signal is sent to the MPU 6, and the MPU 6 performs the recording or reproducing process based on the input instruction.

The memory 8 is a writable memory composed of a RAM or the like, and stores recorded received voice data. That is, in this device, a portable telephone device with a recording function having excellent portability is realized by using the memory 8 which is the work memory of the MPU 6 instead of the conventional magnetic tape as the recording medium.

Further, the voice encoding processing unit 5 is similar to the conventional voice encoding processing unit 5'in a PDC (Personal Digital C
The processing of VSLP or PS-CELP defined in RCR-STD-27, which is the standard of ellular), decodes the reception voice data and encodes the transmission voice data. Further, as a feature of the present device, the voice encoding processing unit 5 receives the flag read instruction signal from the MPU 6 at the time of reproducing the recorded data, reads the flag of the bus control unit 4, and receives the received voice data from the reception buffer 3. It is read and decoded in the same manner as normal received voice data. At that time, when the audio encoding processing unit 5 reads the received audio data from the reception buffer 3, the audio encoding processing unit 5 sends a read end signal to the MPU 6. The operation of the voice encoding processing unit 5 will also be described in detail later.

Next, the operation of the portable telephone device according to the embodiment of the present invention will be described. Among the constituent parts of the present apparatus shown in FIG. 1, the operation is similar for the same part as the conventional one. The basic operation at the time of reception and transmission is the same as the conventional operation described above, but the operation at the time of reception of this device will be briefly described with reference to FIGS. 1, 2, and 3. FIG. 2 is an explanatory diagram of a slot structure in a subframe in this device, and FIG. 3 is an explanatory diagram showing a data format of received data of this device.

As shown in FIG. 2, in this apparatus, TDD in which carriers of the same frequency are shared by transmission and reception in a time division manner is used.
(Time Division Duplex) system is adopted, and the slot structure in the subframe is a transmission slot (T), antenna switching diversity level measurement (LM), reception slot (R), idle (I). .

As shown in FIG. 3, the data format in the communication physical channel is such that the burst transient response guard time (R) is followed by a preamble (P), a sync word (SW), and a color code (CC). ), A stale flag (SF), a low speed associated control channel (SACCH), and a user information transfer channel (TCH). Audio data is included in the user information transfer channel (TCH) as user information. It is what is done.

When the mobile phone receives the radio wave from the base station, the demodulation unit 1 converts the received signal into received digital data and outputs it to the channel coding unit 2 at the timing of the receiving slot shown in FIG. Then, the channel coding unit 2 extracts the reception voice data in the user information transfer channel (TCA) from the reception data in the format shown in FIG. 3, and stores it in the reception buffer 3.

At this time, the reception voice data is stored in the reception buffer 3 for each reception frame, with the reception voice data received in one reception slot as one frame (reception frame), and thereafter, the reception frame is used as a unit. Is treated as.

When the reception voice data is stored in the reception buffer 3, the voice encoding processing section 5 reads the data,
VSLP or PS-CELP voice decoding is performed and output as reception digital data to the μ-Low codec unit 9. The μ-Low codec unit 9 performs digital / analog conversion on the reception digital data, and the reception voice is received by the receiver 10. It is designed to output.

Next, a received voice processing method, which is a characteristic part of this apparatus, will be described with reference to FIG. FIG. 4 is an explanatory diagram showing a recording operation of a received voice in the mobile phone device according to the embodiment of the present invention. When the recording / playback key 7 is pressed and a recording instruction is input during reception, the MPU 6 is stored in the reception buffer 3 at that time via the bus control unit 4 as shown in FIG. The received voice data (voice data 1) of the received frame n is read out and stored in the memory 8
To be stored.

In the next receive slot, receive frame n + 1
When the received voice data of M is stored in the reception buffer 3, M
Similarly, the PU 6 reads the reception voice data of the reception frame n + 1 from the reception buffer 3 and stores it in the memory 8. Then, the above operation is repeated until the recording stop instruction is input from the recording / playback key 7, and the reception voice data is stored in the memory 8 for each reception frame. As a result, the received voice is recorded in the memory 8. FIG.
In the above example, received audio data from the received frame n to the received frame n + m (audio data 1 to audio data m + 1)
Is stored in the memory 8 and recorded.

In addition to the input of the recording / playback key 7, the recording stop instruction is such that a recording time is set in advance in the MPU 6 and the recording is stopped when a predetermined time has elapsed from the start of recording. May be. While the MPU 6 is performing the recording process, the audio encoding processing unit 5 reads the received audio data from the reception buffer 3 via the bus control unit 4 and performs the audio conversion process as in the normal operation. Then, the voice is output to the receiver 10.

Now, the recording process of the received voice in the MPU 6 will be described with reference to FIG. Figure 5 shows MPU6
5 is a flowchart showing a recording process of a received voice in FIG. As shown in FIG. 5, when the recording instruction is input from the recording / playback key 7 (100), the MPU 6 reads one frame of received voice data from the reception buffer 3 (1
02), the received voice data is stored in the memory 8 (10
4).

Then, it is judged whether or not a recording stop instruction has been input (106), and when the recording stop instruction has been input, the recording process is ended. When the recording stop instruction is not input in the process 106, the process returns to the process 102 and the process of storing the received voice data in the memory 8 is repeated until the recording stop instruction is input. In this way,
The recording processing of the received voice in this device is performed.

Next, the operation during reproduction will be described with reference to FIG. FIG. 6 is an explanatory diagram showing the operation when reproducing the recorded received voice data. As shown in FIG.
Upon receiving the reproduction instruction from the recording / reproduction key 7, the PU 6 sets a reproduction instruction flag in the bus control unit 4 via the data bus and stores one frame of received audio data in the memory via the bus control unit 4. Transfer from 8 to receive buffer 3,
A flag read instruction signal is sent to the voice encoding processing unit 5. Here, the reproduction instruction flag is a flag for causing the audio encoding processing unit 5 to recognize that the reproduction operation is being performed, and when the reproduction instruction flag is set,
The voice encoding processing unit 5 starts the voice decoding process.

Upon receiving the flag read instruction signal, the voice encoding processing unit 5 reads the flag of the bus control unit 4 via the data bus, recognizes the reproduction instruction flag, and receives the reception buffer at the same timing as during the call. The received voice data is read from 3 to perform voice decoding, and the decoded data is output to the μ-Low codec unit 9.

Then, the μ-Low codec unit 9 performs the same processing as in the case of the normal received voice data, and outputs the voice to the receiver 10. As a result, the received voice data stored in the memory 8, that is, recorded, can be reproduced as voice.

Here, the bus switching unit 41 of the bus control unit 4
When the MPU 6 transfers the reception voice data in the memory 8 to the reception buffer 3, it performs bus switching so as to connect the buffer data bus 15b connected to the reception buffer 3 to the microprocessor data bus 15a, and performs voice encoding. When the processing unit 5 reads the reception voice data in the reception buffer 3, the buffer data bus 15b is controlled to be connected to the DSP data bus 15c.

Then, when the voice encoding processing section 5 reads out the received voice data for one frame from the reception buffer 3, it outputs a read end signal to the MPU 6. Upon receiving the read end signal from the voice encoding processing unit 5, the MPU 6 reads the received voice data of the next frame from the memory 8 and transfers it to the receive buffer 3.

In this manner, the MPU 6 transfers all the received voice data (recorded data) stored (recorded) in the memory 8 to the receive buffer 3 or until the stop instruction is input. The reproduction process of is repeated. Then, when all the recorded data have been transferred to the reception buffer 3, the reproduction instruction flag set in the bus control unit 4 is reset.

That is, at the time of reproduction, the MPU 6 transfers the received voice data once stored in the memory 8 to the receive buffer 3 frame by frame, and the voice encoding processing unit 5 transfers the received voice data at a timing during a normal call. Sequential reading is performed, and thereafter, the voice encoding processing unit 5 and the μ-Low codec unit 9
Is output by processing the same as the normal received voice.

Next, the processing of the MPU 6 when reproducing the recorded received voice data will be described with reference to FIG.
FIG. 7 is a flowchart showing the reproducing process in the MPU 6. As shown in FIG. 7, when the reproduction instruction is input from the recording / reproduction key 7 (200), the MPU 6 sets the reproduction instruction flag in the bus control unit 4 (202). Then, the MPU 6 reads the received voice data for one frame from the head of the memory 8, transfers it to the reception buffer 3 (204), and sends a flag read instruction signal to the voice encoding processing unit 5 (206).

Then, when a read end signal indicating that the reading from the receiving buffer is completed is received from the voice encoding processing unit 5 (208), the MPU 6 determines whether there is the next received voice data in the memory 8. It is checked (210) whether there is no next received voice data,
The reproduction instruction flag of the bus control unit 4 is reset (21
2) End the process.

If there is the next received voice data in the memory 8 in the process 210, the process returns to the process 204 and the memory 8 is processed.
The received audio data of the next frame is read from, and the same processing is repeated until all the received audio data are transferred.
In this way, the processing at the time of reproduction in the MPU 6 is performed.

According to the portable telephone device and the reception voice processing method thereof according to the embodiment of the present invention, the MPU 6 is provided with the writable memory 8, and when the recording instruction from the recording / reproducing key 7 is inputted, The received voice data is read from the reception buffer 3 via the bus control unit 4, and the received voice data is recorded in the memory 8 by storing the received voice data. Further, the MPU 6 issues a reproduction instruction from the recording / reproduction key 7. When received, the received voice data stored in the memory 8 is transferred to the reception buffer 3 and converted into voice through each conversion unit for output, so that the size of the mobile phone device is almost the same. The received voice can be recorded / played back using the memory that has no influence as a recording medium, and the mobile phone device having the recording function of the received voice can be realized without impairing the portability. There is.

Further, according to the portable telephone device according to the embodiment of the present invention, when an important message is received on the go, the received voice can be recorded as it is. Therefore, the writing instrument can be taken out. There is an effect that convenience is improved because it is not necessary to take notes.

[0044]

According to the present invention, when recording the received voice data, the received voice data is stored in the memory from the receive buffer in the unit of frame as the recorded data, and when the recorded data is reproduced, the reproduction instruction is given. A mobile phone device that sets a flag to transfer recorded data from a memory to a reception buffer in frame units, and that the voice encoding processing unit recognizes a reproduction instruction flag to decode the recorded data to reproduce voice. Since the received voice processing method is used, the received voice can be recorded without impairing portability.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of a mobile phone device (present device) according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a slot configuration in a subframe in the mobile phone device according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a data format of received data of the present apparatus.

FIG. 4 is an explanatory diagram showing a recording operation of a received voice in this device.

FIG. 5 is a flowchart showing a recording process of received voice in MPU6.

FIG. 6 is an explanatory diagram showing an operation when reproducing the recorded received voice data.

FIG. 7 is a flowchart showing a reproduction process in the MPU 6.

FIG. 8 is a configuration block diagram of a conventional mobile phone device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Demodulation part, 2 ... Channel coding part, 3 ... Reception buffer, 4 ... Bus control part, 5 ... Voice coding processing part, 6 ... MPU, 7 ... Recording / playback key, 8 ... Memory, 9 ... μ-Low Codec section, 10 ... Receiver, 11 ... Microphone, 12 ... Transmission buffer, 13 ...
Modulation unit, 15 data buses, 41 ... Bus switching unit

Claims (3)

[Claims] 1. A reception buffer for storing reception voice data, a transmission buffer for storing transmission voice data, a voice encoding processing unit for encoding and decoding voice data, and a voice output unit for outputting voice. In a mobile phone device having a voice input unit for inputting voice, a memory for storing received voice data as recording data in frame units, a playback instruction flag set at the time of playback and reset at the end of playback, and the received voice data A recording key for inputting a recording instruction of a recording key, a playback key for inputting a reproduction instruction of recording data, and a recording instruction from the recording key to store received voice data from the reception buffer in a frame unit as recording data in the memory. Then, the recording is performed, the reproduction instruction flag is set by the reproduction instruction from the reproduction key, and the recorded data is read from the memory. And a control unit for resetting the reproduction instruction flag when the reproduction is completed, and the audio encoding processing unit recognizes the set of the reproduction instruction flag and transfers it to the reception buffer. A mobile phone device, wherein the mobile phone device is a voice encoding processing unit that decodes and reproduces the recorded data that has been stored. 2. When a recording instruction is input from the recording key,
2. The method according to claim 1, wherein the control unit reads the received voice data from the reception buffer on a frame-by-frame basis, stores it in the memory as recorded data, and records the data. 3. When a reproduction instruction is input from the reproduction key,
A process in which the control unit sets a reproduction instruction flag, transfers recording data from the memory to the reception buffer in frame units, and the voice encoding processing unit recognizes the reproduction instruction flag and decodes the recording data in the reception buffer. The method of claim 1, wherein the reproduction instruction flag is reset when the process ends.