JPH1139166A - Portable communication terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To update a control program concerning communicating operation by downloading without necessitating a work memory, etc., of a large capacity at a portable communication terminal equipment with a recording and reproducing function. SOLUTION: This terminal equipment is provided with first and second memories 21 and 22 consisting of electrically non-rewritable nonvolatile memories; a communication control part 19 controlling communicating operation according to a control program stored in the first memory 21, a recording and reproducing control part 20 making the second memory 22 to store voice data to read this to reproduce and on the other hand, making the second memory 22 to download a new control program through a radio line; and multiplexers 31 to 34 provided between the parts 19, 20 and the memories 21, 22 to switch-connect the part 19 with the first memory 21 and the part 20 with the second memory 22 in a first state. In this case, the multiplexers 31 to 34 switch-connect the part 19 with the second memory 22 and the part 20 with the first memory 22 in a second state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable communication terminal such as a PHS terminal or a specified low power transceiver having a function of recording and reproducing voice.

[0002]

2. Description of the Related Art Currently used, for example, PH
In a mobile communication terminal such as an S terminal, a digital mobile phone, or a specific low power transceiver, a control program required for a communication operation is fixedly stored in a semiconductor memory. In this case, the semiconductor memory used specifically is a non-volatile memory such as an EPROM, a flash ROM, an EEPROM, a mask ROM, and a ferroelectric RAM. It is used as something that is not wasted.

However, among the above-listed nonvolatile memories, those whose storage contents can be electrically rewritten are flash ROMs, EEPROMs, and ferroelectric RAMs. When used, it is conceivable that the control program related to the communication operation can be updated by, for example, transmitting and receiving wireless data by version upgrade or the like.

[0004]

However, since the control program is stored in an electrically rewritable nonvolatile memory, the control program relating to the communication operation is actually downloaded by transmitting / receiving wireless data by version upgrade or the like. In the case of updating, a large-capacity work memory that is not necessary for normal communication operation is required, and it is costly to prepare such a large-capacity work memory in advance to upgrade the version. This is very disadvantageous and also affects the price of the mobile communication terminal itself.

In addition, if the portable communication terminal is brought to a service center, the nonvolatile memory itself can be replaced or the stored content can be rewritten even if the nonvolatile memory is not electrically rewritable. Thus, the control program can be updated.

However, in that case, it takes time and effort to bring the terminal to the service center, and during that time, the terminal cannot be used, so that the control program can be easily updated. I can not help it.

[0007] By the way, portable communication terminals such as PHS terminals and digital cellular phones have a recording / reproducing function, and a message from a caller who cannot respond to an incoming call is digitized and stored. In some cases, the contents can be confirmed at a later point in time by reproducing the stored contents. The storage media used in this type of recording / reproducing function are flash ROM, EEPROM,
This is a nonvolatile memory such as a ferroelectric RAM.

Therefore, in a portable communication terminal having a recording / reproducing function, the same kind of non-volatile memory is used for two purposes, one for storing a control program and the other for storing digital audio data. Are used for limited purposes in the circuit and are not used for other purposes.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a portable communication terminal having a recording / reproducing function, for storing a control program and for storing digital audio data. A mobile communication terminal capable of effectively downloading and updating a control program relating to communication operations by effectively utilizing the same type of non-volatile memory used for two purposes and without requiring a large-capacity work memory or the like. To provide machines.

[0010]

According to the first aspect of the present invention, there is provided an electrically rewritable nonvolatile memory for storing one of a communication operation control program and voice data. 1 memory, a second memory which is the electrically rewritable nonvolatile memory for storing the other of the control program or the audio data, and a control program stored in the first or second memory. Communication control means for controlling a communication operation; and a second control means for storing voice data in the second or first memory, reading and reproducing the voice data, and storing a new control program through a wireless line. Recording / playback control means for downloading to the second or first memory; between the communication control means and the first and second memories; Control means and disposed between the second and the first memory, and the first or second memory the communication control means stores the control program,
Switching connection means for switching and connecting the recording / playback control means to the second or first memory for storing the audio data; and after completion of the download, the communication control means for storing the audio data until then by the switching connection means. Switching connection with the second or first memory storing the newly downloaded control program,
Switching control means for switching connection of the recording / reproduction control means to the first or second memory, which previously stored a control program, is provided.

With this configuration, the memory for storing the control program for the communication operation and the memory for storing voice data for answering machine recording are both constituted by electrically rewritable nonvolatile memories, By switching the access route to the memory, it becomes possible to download a new control program from the wireless line, and since a large-capacity work memory is not required at the time of downloading, the circuit can be used by using unnecessary circuit elements. Without increasing the scale and increasing the product cost, you can easily download and update the control program related to the communication operation, upgrade the control program created by the producer to correct defects and improve performance. Can be performed.

According to a second aspect of the present invention, there is provided an electrically rewritable nonvolatile memory for storing a control program and data for a communication operation in different areas, and a control program stored in the memory. Control means for controlling the operation of the terminal; download means for downloading to a previously stored data area of the memory when a new control program is obtained through a wireless line; Area switching means for designating the address of an area of the memory in which the control data is newly downloaded, while specifying the address so that the data is stored in the area of the memory in which the control program used so far is stored. And characterized in that:

With such a configuration, one electrically rewritable nonvolatile memory shares a memory for storing a communication operation control program and a memory for storing voice data for answering machine recording. Configuration as
Since the area position in the memory is controlled,
A new control program can be downloaded from the wireless line while eliminating a switching element for switching a plurality of memories, and a large-capacity work memory or the like is not required at the time of downloading. In order to contribute to downsizing of the device on a large scale and further reduce product costs, it is easy to download and update control programs related to communication operations, to correct defects in control programs created by producers and to improve performance. Can be upgraded.

According to a third aspect of the present invention, there is provided a first memory group including an electrically rewritable nonvolatile memory for storing a control program for a communication operation, and an audio rewritable for storing voice data. A non-volatile memory, a plurality of control means for controlling a communication operation in accordance with a control program stored in a corresponding one of the first memory groups, respectively; Recording and reproduction control means for storing audio data in a memory, reading and reproducing the data, and downloading a new control program obtained through a wireless line to the second memory; One is that after the download is completed, the control program downloaded to the second memory is updated and stored in a corresponding one of the first memory group. And characterized in that.

With this configuration, all memories for storing control programs and audio data in the circuit are constituted by electrically rewritable nonvolatile memories, and the memory for storing audio data is temporarily stored. It is possible to download a new control program for an arbitrary control unit from a wireless line, and it is not necessary to use a large-capacity work memory at the time of downloading. Without increasing the circuit scale and increasing the product cost, the control programs related to various operations in the circuit can be easily downloaded and updated to correct the problems of the control programs created by the producer and improve the performance. Can be upgraded.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) A first embodiment in which the present invention is applied to a PHS terminal 10 having an answering machine recording function will be described below with reference to the drawings.

FIG. 1 shows a schematic configuration thereof. In the figure, reference numeral 11 denotes an antenna, to which a receiving unit 12 and a transmitting unit 13 are connected via an antenna switch (not shown) for distributing transmission / reception. The receiving unit 12 and the transmitting unit 13 include a frequency converting unit and a demodulating unit or a modulating unit.
1 is input through the antenna switch and mixed with a local oscillation signal of a predetermined frequency output from the PLL synthesizer 14 to obtain a 1.9G signal.
The frequency is converted from the Hz band to an IF signal of about 1 MHz, and the IF signal is demodulated and separated into IQ data by a demodulation unit.
TDMA (Time Divis)
ION Multiple Access (Time Division Multiple Access) unit 15.

On the other hand, the transmitting unit 13 generates IQ data from the data transferred from the TDMA unit 15, converts the generated IQ data into a π / 4-shifted QPSK modulated wave, and outputs the modulated data from the PLL synthesizer 14. The frequency is converted to a 1.9 GHz band by mixing with a local oscillation signal having a predetermined frequency, and radiated from the antenna 11 via the antenna switch.

The TDMA unit 15 performs frame synchronization and data format processing of slots. On the receiving side, one slot of data is extracted at a predetermined timing from the received data sent from the modulation unit in the receiving unit 12. After extracting a unique word (synchronization signal) from the data to synchronize the frames and descrambling the control data section and the audio data section, the control data is sent to a communication control section 19 to be described later, The data is transferred to the audio processing unit 16 and the recording / playback control unit 20.

On the transmission side of the TDMA unit 15, control data and the like are added to the audio data sent from the audio processing unit 16, scrambled and the like, and a unique word and the like are added. The data is created, inserted into a predetermined slot in the frame at a predetermined timing, and transmitted to the modulation unit in the transmission unit 13.

The voice processing unit 16 is constituted by a speech codec unit and a PCM codec unit, and operates under the control of the general control unit 23 described later. The speech codec unit performs compression / decompression processing of digital data. On the receiving side, the ADPCM audio data (4 bits × 8 KHz = 32 Kbps) transmitted from the TDMA unit 15 or the recording / reproduction control unit 20 is converted into a PCM signal.
The data is decoded to audio data (8 bits × 8 KHz = 64 Kbps), decompressed, and output to the PCM codec unit. On the other hand, on the transmitting side of the speech codec unit,
The PCM audio data sent from the PCM codec unit is compressed by encoding it into ADPCM audio data and output to the TDMA unit 15.

The PCM codec section of the audio processing section 16 performs analog / digital conversion processing.
On the receiving side, the PCM voice data sent from the speech codec unit is D / A converted and an analog voice signal is output to a speaker 17 constituting a receiver, while on the transmitting side, a microphone constituting a transmitter is provided. A / D-converts the analog audio signal input from
The audio data is output to the speech codec.

The communication control unit 19 includes a first memory 2 described later.
Based on a control program stored in one of the first and second memories 22, the PLL synthesizer 14 and the TDM
A section 15 controls the communication operation.

The recording / reproducing control unit 20 controls the answering machine recording / reproducing operation under the control of the general control unit 23, and stores the ADPCM audio data sent from the TDMA unit 15 into the first memory 21 and the second memory 21. The ADPCM audio data stored in one of the memories 22 and stored in the other of the first memory 21 and the second memory 22 is read and transmitted to the audio processing unit 16.

The first memory 21 and the second memory 22
Are flash ROM, EEPROM, ferroelectric R
It is composed of an electrically rewritable nonvolatile memory such as an AM. On the other hand, the control program of the communication control unit 19 is stored. On the other hand, the ADPCM audio data based on the control of the recording / playback control unit 20 is stored. It will be memorized.

The overall control unit 23 controls the PHS terminal 10
In response to the user's operation, the overall control of the entire circuit is performed, and at the same time, the circuit also serves as a man-machine interface. , The communication control unit 19
And transmission and reception of control data.

Next, the operation of the above embodiment will be described. During a normal call, a radio wave from a base station (not shown) is input to the receiving unit 12 via the antenna 11, demodulated by the receiving unit 12, converted to a baseband IQ data sequence, and transferred to the TDMA unit 15.

The TDMA section 15 separates the demodulated data into a control data section and an audio data section, and transfers the control data section to the audio processing section 16 and the audio data section to the audio processing section 16, respectively.

In the audio processing section 16 having received the audio data section, the digital audio data is converted into an analog signal and output to the speaker 17, and the speaker 17 emits sound. On the other hand, the audio input by the microphone 18 is converted into digital data by the audio
To send to. The TDMA section 15 adds control data given from the communication control section 19 to the audio data to create transmission data in slot units according to a predetermined transmission format, and inserts the data into a predetermined slot in a frame at a predetermined timing. It is sent to the transmission unit 13.

The transmitting section 13 modulates the frequency of the data transferred from the TDMA section 15 and then radiates it from the antenna 11 to transmit the data to the base station (not shown).

During such a call, the communication control unit 19 establishes, continues, and terminates the call according to a procedure based on a control program stored in the first memory 21, for example.
It is assumed that the operation control of the L synthesizer 14 and the TDMA unit 15 is performed.

Next, the recording operation with the answering machine recording function set will be described. When an incoming call is received with the answering machine recording function set, a radio wave from a base station (not shown) is input to the receiving unit 12 via the antenna 11 and demodulated by the receiving unit 12 to obtain baseband IQ.
The data is transferred to the TDMA unit 15 as a data string.

The TDMA section 15 separates the demodulated data into a control data section and a voice data section as in a normal call.
Also, the voice data section is transferred to the voice processing section 16 and particularly to the recording / reproduction control section 20 when the answering machine recording function is set.

The recording / playback control section 20 sequentially stores the audio data (ADPCM audio data) sent from the TDMA section 15 in the second memory 22 for a preset time length.

At this time, the communication control unit 19 controls the PLL synthesizer 14 and the TDMA to establish, continue, and terminate the call in a procedure based on the control program stored in the first memory 21 in the same manner as in the normal call. The operation of the unit 15 is controlled.

After the recording is completed, when the reproduction of the stored audio data is instructed via the overall control unit 23, the recording and reproduction control unit 20 sequentially reads out the audio data stored in the second memory 22 and sequentially reads out the audio data. , And reproduced and output from the speaker 17.

Next, a description will be given of an operation when downloading data of a control program for a new communication operation via a wireless line via a base station (not shown). in this case,
The downloaded data is demodulated via the antenna 11 and the receiving unit 12, and is recognized by the TDMA unit 15 as data of a new control program.
Sent to 0.

The recording / playback control section 20 sequentially stores the data of the new control program sent to the second memory 22, which has been used for storing the audio data, from the lower address position. Then, when all the data of the new control program sent is stored in the second memory 22, the download of the control program is completed, and the communication control unit 19 releases the wireless line.

During the execution of the download, the communication control unit 1
9 controls the operation according to the control program of the communication operation stored in the first memory 21 and accesses the second memory 22 storing the new control program when the download is completed. It operates according to the stored control program.

Accordingly, when the recording / reproduction control unit 20 receives audio data from the TDMA unit 15 thereafter, the audio data is stored in the first memory 21. FIG. 2 illustrates a specific circuit configuration for switching the functions of the first memory 21 and the second memory 22 by the communication control unit 19. The communication control unit 19 and the recording / reproduction control unit 20
Multiplexers 31 to 34 are provided between the first memory 21 and the second memory 22.

The multiplexers 31 to 34 are those in which the multiplexers 31 and 32 and the multiplexers 33 and 34 perform switching operations in conjunction with each other.
1 and 32 are provided by a switching signal from the direct communication control unit 19,
The multiplexers 33 and 34 perform a switching operation according to the switching signal inverted by the inverter 35.

However, the multiplexer 32 is connected to the first memory 21 from the communication controller 19 or the recording / reproduction controller 20.
The multiplexer 31 is used for inputting an address to the communication control unit 19 or the recording / reproduction control unit 20 for outputting data read from the first memory 21 to the communication control unit 19 or the recording / reproduction control unit 20. The multiplexer 34 for inputting an address to the second memory 22 transmits the data read from the second memory 22 to the communication control unit 1.
9 or for output to the recording / playback control unit 20.
In the figure, both the multiplexers 31 and 32 are the communication control unit 1.
9 and the multiplexers 33 and 34 are both connected to the recording / playback control unit 20 side. The control program of the communication control unit 19 is stored in the first memory 21, and the audio data of the recording / playback control unit 20 is stored in the second memory 22. Indicates a state in which is stored.

In this case, the switching signal to the multiplexers 31 to 34 is based on the port output of the communication control unit 19, and the downloaded new control program is transmitted to the second control program.
The communication control unit 19 is reset once, and the operation immediately after the reset is performed depends on the original control program stored in the first memory 21 during the operation. 2 By accessing a specific address of the memory 22, the version of the control program stored in each is decoded, and the contents of the switching signal to the multiplexers 31 to 34 are determined to start the operation using the new control program. It shall be. Therefore, the recording / reproducing control unit 20 immediately starts the first memory 21 immediately after the switching operation.
It is necessary to perform processing to prevent writing of audio data to the specific address.

As described above, according to the first embodiment, the memory for storing the control program for the communication operation and the memory for storing the voice data for answering machine recording are both electrically rewritable non-volatile. It is possible to download a new control program from a wireless line by switching the access route to the memory, and it does not require a large-capacity work memory at the time of downloading. By using elements, the control program for communication operation can be easily downloaded and updated without increasing the circuit scale and increasing the product cost. Version upgrade for improvement is possible.

Although the switching signal to the multiplexers 31 to 34 has been described as being output by the communication control unit 19 as shown in FIG. 2, as shown in FIG.
9 may be output by the overall control unit 23.

In this case, the general control unit 2 notifies that the communication control unit 19 has started downloading a new control program.
3, the general control unit 23 resets the communication control unit 19 at the end of the download,
By inverting the switching signal to the multiplexers 31 to 34 and then releasing the reset to the communication control unit 19,
The operation of the communication control unit 19 by the new control program can be immediately started.

(Second Embodiment) Next, a second embodiment in which the present invention is applied to a PHS terminal 40 having an answering machine recording function will be described with reference to the drawings.

FIG. 4 shows a schematic configuration thereof, which is basically the same as that shown in FIG. 1, so that the same portions are denoted by the same reference numerals and description thereof will be omitted. However,
In place of the first memory 21 and the second memory 22 in FIG. 1 described above, one memory 41 composed of an electrically rewritable non-volatile memory is provided. The operation of writing (reading) / reading (playback) audio data to / from the memory 41 by the control recording / playback control unit 20 in FIG. Instead of the communication control unit 19 '.

Here, the TDMA unit 15 can execute both the control of the communication operation performed by the communication control unit 19 'based on the control program read from the memory 41 and the control of writing / reading the audio data to / from the memory 41. 1 received
After the control data and the audio data in the frame are separated, the audio data that must be processed in real time in the frame is stored in the memory 41, and the received control data is stored between the frame and the next frame. This is because the decryption and the creation of the control data frame to be transmitted next need only be performed, so that the processing does not overlap in time.

FIG. 5 shows the processing timing, and FIG. 5 (1) shows a received frame in the received signal. As shown in FIG.
The communication control unit 19 ′ immediately stores the audio data separated by the MA unit 15 sequentially in the area of the memory 41. Then, when the reception frame is completed and all the separated audio data have been stored in the memory 41, the processing shown in FIG.
As shown in (3), T until the next reception frame period is reached.
It performs communication processing such as decoding control data separated by the DMA unit 15 and creating control data to be transmitted in the next transmission frame.

The memory 41 has a memory area configuration as shown in FIG. 6, and a control program for a basic communication operation which is not affected by version upgrade is fixedly stored in the first address area. The data including the jump address, which will be described later, is rewritably stored in the area on the address space in the same manner as the control program for the basic communication operation, so that the remaining address space is divided into two parts. 2 areas are provided. In these first and second areas, one stores a control program for a communication operation corresponding to the version at that time, and the other stores voice data for an answering machine recording function.

Next, the operation of the above embodiment will be described. However, in the PHS terminal 40, the operation at the time of a normal call is the same as that of the first embodiment, so that the description thereof is omitted, but the communication control unit 19 'is stored in the memory 41. The communication operation is controlled in accordance with the basic control program and the control program stored in one of the first and second areas.

During the operation of the answering machine recording function, the communication control unit 19 'presets the audio data (ADPCM audio data) separated from the received signal by the TDMA unit 15 via the antenna 11 and the receiving unit 12 as a recording operation. The writing is sequentially performed on the other side of the first and second areas of the memory 41 for the length of time that has been performed.

After the end of the recording operation, when the reproduction of the audio data stored in the memory 41 is instructed via the general control unit 23, the communication control unit 19 'moves the other side of the first and second areas of the memory 41 to the other side. The stored audio data is sequentially read out, sent to the audio processing unit 16, and reproduced and output from the speaker 17.

Next, the operation of downloading a new control program data for a communication operation via a wireless line will be described with reference to FIG. In this case, at the start of the operation, it is assumed that the data of the control program for the communication operation is stored in, for example, the first area of the memory 41 or the audio data is stored in the second area.

The downloaded data is stored in the antenna 11,
The data is demodulated through the receiving unit 12, is recognized by the TDMA unit 15 as data of a new control program, and is transmitted to the communication control unit 19 '.

According to the basic control program stored in the memory 41 and, for example, the control program stored in the first area, the communication control unit 19 'stores the data in the memory 41 which has been used for storing the audio data until then. The data of the new control program sent to the area No. 2 is sequentially stored from the lowest address position (step S).
1).

When it is determined that all the data of the new control program that has been sent is stored in the second area of the memory 41, the communication control unit 19 '(step S10).
2) It is assumed that the download of the control program has been completed, the wireless line is released, and the jump address stored in the rewritable area of the basic control program stored in the memory 41 is set to the top of the first area. The rewriting is set from the address to the head address of the second area (step S3).

Thereafter, the communication control unit 19 '
3 is sent (step S4), and the control unit 23 waits for a reset signal from the general control unit 23 (step S5).

When the reset signal is actually received from the overall control unit 23, the communication control unit 19 'resets the data including the temporarily stored various data therein.
The control of the communication operation is started again according to the basic control program of the memory 41 and the control program from the head address of the second area corresponding to the jump address rewritten and set in step S3 included in the basic control program (step S3). S6) Then, the processing of FIG. 7 ends, and the processing shifts to a processing according to an instruction from the overall control unit 23.

Accordingly, if the communication control unit 19 'receives voice data from the TDMA unit 15 when the answering function is performed thereafter, the communication control unit 19' stores the voice data in the first area.

As described above, according to the second embodiment, one electrically rewritable nonvolatile memory stores a memory for storing a communication operation control program and voice data for recording an answering machine. And a memory element for controlling the memory area position. Therefore, switching elements such as multiplexers 31 to 34 for switching memories as shown in the first embodiment are used. While excluding, a new control program can be downloaded from the wireless line.

Further, since a large-capacity work memory or the like is not required at the time of downloading, the control program relating to the communication operation can be easily performed while contributing to downsizing of the device with a smaller circuit scale and further reducing the product cost. Download and update, it is possible to correct defects in the control program created by the producer and upgrade the version to improve performance.

(Third Embodiment) Next, a third embodiment in which the present invention is applied to a PHS terminal 50 having an answering machine recording function will be described with reference to the drawings.

FIG. 8 shows a schematic configuration thereof, which is basically the same as that shown in FIG. 1, and therefore, the same parts are denoted by the same reference numerals and description thereof will be omitted. Then
A first ROM 51 for storing a processing algorithm and a control program of the voice processing unit 16 for the voice processing unit 16
And a first RAM 52 serving as a work area when the audio processing unit 16 performs data processing.

The communication control unit 19 is provided with a second ROM 53 storing control programs such as wireless management, movement management, and preliminary control performed by the communication control unit 19, and a communication control unit 19 for processing data. The second work area
The RAM 54 is connected.

Further, a third RAM 56 for temporarily storing digital voice data during an answering machine telephone call, an answering message for answering machine recording, and a digital voice data stored in the third RAM 56 after the telephone call to the recording / playback controller 20. Is connected.

Then, the fourth ROM 5 storing the control program of the general control unit 23 is transmitted to the general control unit 23.
7 and the 4th R serving as a work area for the general control section 23
AM 58 is connected.

Next, the operation of the above embodiment will be described. Here, the PHS terminal 50 is connected to the first ROM 51, the second ROM 53, the third ROM 53 via a base station (not shown).
An operation when a new control program is downloaded to one of the ROM 55 and the fourth ROM 57 will be described.

FIG. 9 shows the structure of data to be downloaded. The entire data is composed of a header 101 and a data 1.
02. The header section 101 includes
A rewrite identifier 103 indicating that the data is a download for rewriting the control program, a length 104 indicating the capacity of the data to be downloaded, a ROM number portion 105 indicating which ROM is to be rewritten, and a A rewrite start address section 106 indicating a rewrite start address is described. The data section 10
In 2, the sequence of the control program to be actually rewritten is continuously described.

Thus, the download data from the base station is demodulated via the antenna 11 and the receiving unit 12, and TD
When output to the MA unit 15, the TDMA unit 15 rewrites the rewrite identifier 10 of the header 101 in the data header 101.
3 to the communication control unit 19, and
Transmit the contents of Upon receiving this, the communication control unit 19 transmits the contents of the header unit 101 to the higher-level general control unit 23.

The overall control unit 23 first recognizes the start of the download of the control program based on the rewrite identifier 103 sent thereto, and issues a route instruction to the third ROM 55 for temporarily storing data to be downloaded to the communication control unit 19. At the same time, a storage command and storage start address data are instructed to the recording / reproduction control unit 20 so that the output of the TDMA unit 15 is stored in the third ROM 55.

The communication control unit 19 receives the route instruction from the general control unit 23 and operates the TDMA unit 15 so that the data from the TDMA unit 15 is output to the recording / reproduction control unit 20.

The recording / playback control unit 20 stores the output from the TDMA unit 15 in the third ROM 55 in accordance with the storage start address specified by the general control unit 23. This 3rd R
The storage in the OM 55 is performed continuously for the data length indicated by the length 104. After storing the data of the data length, the download of the control data is completed, and the antenna 11, the receiving unit 12, and the TDMA unit 15 are stored. Release the connection with the base station.

Thereafter, the overall control unit 23 stores the third ROM 55
A first ROM 51 and a second ROM 5 for actually rewriting the control data of the download data stored in the
3 and any one of the fourth ROM 57.

In this case, the overall control unit 23 sends the header 1
01, the transfer destination is confirmed by reading the ROM number portion 105, and then, before the start of the transfer, the transfer program stored in the fourth ROM 57 is transferred to the fourth RAM 58, and the area of the transferred fourth RAM 58 is accessed. To start the transfer program. Next, any one of the audio processing unit 16, the communication control unit 19, and the overall control unit 23 connected to the ROM to be rewritten is shifted to the transfer reception state. Note that the transfer reception state here refers to the transfer status of the ROM
Is transferred to the RAM connected thereto, and each control unit accesses the area of the transferred RAM to start the transfer reception program.

By starting both the transfer program of the transfer source and the transfer program of the transfer destination in this way, the overall control unit 23 controls the recording / playback control unit 20 to execute the transfer program shown in FIG. That is, the overall control unit 23 refers to the download start address of the third ROM 55 (step A1), and instructs the recording / reproduction control unit 20 to download the header part 101 of the data of the downloaded control program.
Is transmitted (step A2).

Next, in response to the request, the header 1
01 is received from the recording / reproduction control unit 20 (step A3), and when it is determined that it has been received, at least a part including the ROM number part 105 and the rewrite start address part 106 in the header part 101 is analyzed. (Step A4),
A rewrite start command for the ROM connected to the rewrite-destination control unit is output (step A5).

Thereafter, the process waits for a response from the rewriting destination control unit to be output (step A6). When it is determined that the response has been output, the rewriting destination control unit sends the rewriting start address unit 10
6 is transmitted (step A7), and then a command to transmit the data section 102 of the next address held in the third ROM 55 is output to the recording / reproduction control section 20 (step A8).

Then, the process waits for reception of the data portion 102 sent from the data portion 102 in response to the transmission command (step A9). When it is determined that the data portion 102 has been received, the received data portion 102 is rewritten. This is transmitted to the previous control unit (step A10).

In response to this transmission, it waits for the reception completion signal to be sent from the rewriting control unit (step A1).
1) At the time when it is determined that the data has been sent, it is determined whether or not there is still a data portion 102 to be transferred (step A1).
2) If it is determined that there is, the process from step A8 is repeated and the entire data unit 102 is transferred to the control unit at the rewriting destination.

If it is determined in step A12 that there is no more data section 102 to be transferred, a transfer end signal is sent to the rewriting destination control section (step A1).
3) With the above, the execution of the transfer program by the overall control unit 23 is completed.

On the other hand, in the rewriting destination control unit that receives the data from the general control unit 23, the ROM rewrite command received from the general control unit 23 in step A5 described above causes
The transfer receiving program shown in FIG.

That is, the control unit at the rewriting destination first sets the R
In response to the OM rewrite command, after sending a signal indicating that the activation of the transfer reception program has been completed to the overall control unit 23 (step B1), the recording and playback control unit 20
Waits for the rewriting start address section 106 to be sent from the server (step B2). When it is determined that the rewriting start address section 106 has been received (step B3), the received contents of the rewriting start address section 106 are stored in the rewriting destination ROM. (Step B4).

Thereafter, it waits for the corresponding data section 102 to be transferred from the general control section 23 (step B).
5) When it is determined that this has been received (step B)
6) After holding the received data portion 102 in the temporarily connected RAM, confirm that the content of the data is not a signal indicating the end of transfer (step B7), and then store the data portion in the RAM. 102 is the destination ROM
Is set (step B8).

Next, a signal indicating the completion of reception is output to the general control unit 23 (step B9), and after the rewrite address of the ROM is updated and set to "+1" (step B1).
0), and by repeatedly executing the processing from step B5 again, all of the transmitted data portion 102 is RO
Write to M.

If it is determined in step B7 that the received data is a signal indicating the end of the transfer, the execution of the transfer receiving program by the control unit is completed.

FIG. 12 shows the path of the downloaded data in the case where the contents of the first ROM 51 are rewritten, which are indicated by bold lines. Similarly, FIG. 13 shows the path of the downloaded data in the case of rewriting the contents of the second ROM 53, which is indicated by a bold line.

FIG. 14 shows the path of the downloaded data in the case of rewriting the contents of the fourth ROM 57, which is indicated by a bold line. In this case, the transfer destination ROM is the fourth ROM 57. ROM 5 to which the overall control unit 23 itself that has started the
7 is rewritten, there is no need to newly start the transfer receiving program.

As described above, according to the third embodiment, all the memories for storing the control program and audio data in the circuit are constituted by electrically rewritable nonvolatile memories, and the audio data is stored in the memory. By temporarily storing the memory to be stored, it is possible to download a new control program for an arbitrary control unit from a wireless line, and since a large-capacity work memory or the like is not required at the time of downloading, unnecessary use is possible. By using circuit elements, the circuit scale is increased, and without increasing the product cost,
It is easy to download and update control programs related to various operations in the circuit, and it is possible to upgrade the version of the control program created by the producer to correct defects and improve performance.

Although the first to third embodiments have been described with reference to the case where the present invention is applied to a PHS terminal, the present invention is not limited to this, and has a function of recording and reproducing voice. Of course, if it is a portable communication terminal, it can be applied to a digital / analog mobile phone, a specific low power transceiver, and the like. In addition, the present invention can be variously modified and implemented without departing from the gist thereof.

[0092]

According to the first aspect of the present invention, both the memory for storing the control program for the communication operation and the memory for storing the voice data for answering machine are electrically rewritable nonvolatile memory. By switching the access route to the memory, it becomes possible to download a new control program from the wireless line.Furthermore, since a large-capacity work memory or the like is not required at the time of downloading, unnecessary circuit elements are used. By using it, the circuit scale is increased and the product cost is not increased.
It is possible to easily download and update a control program related to communication operation, and to correct a defect in a control program created by a producer or upgrade the version to improve performance.

According to the second aspect of the present invention, one electrically rewritable nonvolatile memory shares a memory for storing a communication operation control program and a memory for storing data. Since it is configured to control the area position in the memory, it is possible to download a new control program from a wireless line while eliminating a switching element for switching a plurality of memories. Since it does not require a large-capacity work memory or the like, it contributes to the downsizing of the device with a smaller circuit scale, and further reduces the product cost. It is possible to fix bugs in the control program created by the producer and upgrade the version to improve performance That.

According to the third aspect of the present invention, all memories for storing control programs and audio data in the circuit are constituted by electrically rewritable nonvolatile memories, and the memory for storing audio data is provided. By temporarily holding it,
A new control program for an arbitrary control unit can be downloaded from a wireless line, and a large-capacity work memory or the like is not required at the time of downloading, so that the circuit scale is increased by using unnecessary circuit elements, Also, without increasing the product cost, you can easily download and update the control programs related to various operations in the circuit, and fix bugs in the control programs created by the producer and upgrade the version to improve performance. Becomes

[Brief description of the drawings]

FIG. 1 is a block diagram showing a circuit configuration according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a specific configuration of switching connection of the memory according to the embodiment;

FIG. 3 is a block diagram illustrating another specific configuration of the switching connection of the memory according to the embodiment;

FIG. 4 is a block diagram showing a circuit configuration according to a second embodiment of the present invention.

FIG. 5 is a timing chart showing the contents of an operation process according to the embodiment;

FIG. 6 is a view exemplifying an area configuration of a memory in FIG. 4;

FIG. 7 is a flowchart for explaining an operation according to the embodiment;

FIG. 8 is a block diagram showing a circuit configuration according to a third embodiment of the present invention.

FIG. 9 is an exemplary view showing a configuration of data to be downloaded according to the embodiment;

FIG. 10 is a flowchart for explaining the operation according to the embodiment;

FIG. 11 is a flowchart for explaining the operation according to the embodiment;

FIG. 12 is a view exemplifying a path of downloaded data according to the embodiment;

FIG. 13 is a view exemplifying a route of downloaded data according to the embodiment;

FIG. 14 is a view exemplifying a path of downloaded data according to the embodiment;

[Explanation of symbols]

 10, 40, 50 PHS terminal 11 Antenna 12 Reception unit 13 Transmission unit 14 PLL synthesizer 15 TDMA unit 16 Audio processing unit 17 Speaker 18 Microphone 19, 19 'Communication control unit 20 Recording Reproduction control unit 21 First memory 22 Second memory 23 General control unit 31-34 Multiplexer 35 Inverter 41 Memory 51 First ROM 52 First RAM 53 Second ROM 54 Second RAM 55 Third ROM 56 ... third RAM 57 ... fourth ROM 58 ... fourth RAM 101 ... header section 102 ... data section 103 ... rewrite identifier 104 ... length 105 ... ROM number section 106 ... rewrite start address section

Claims (3)

[Claims] An electrical rewritable nonvolatile memory for storing one of a communication operation control program and audio data; and an electrical memory for storing the other of the control program and audio data. A second memory that is a rewritable non-volatile memory; a communication control unit that controls a communication operation in accordance with a control program stored in the first or second memory; and the second or first memory. To store voice data,
Recording and reproduction control means for reading out and reproducing the data while downloading a new control program obtained through a wireless line to the second or first memory for storing the audio data; The communication control means is provided between the second memory and between the recording and reproduction control means and the second and first memories, and the communication control means is connected to the first or second memory storing the control program. Switching connection means for switching and connecting the recording and reproduction control means to the second or first memory for storing the audio data; I remember
The recording / playback control means is connected to the first or second memory, which has previously stored the control program, by switching connection to the second or first memory storing the newly downloaded control program. And a switching control means for causing the portable communication terminal to perform the switching. 2. An electrically rewritable non-volatile memory for storing a control program and data for a communication operation in different areas, and controlling a terminal operation in accordance with the control program stored in the memory. Control means for performing, when a new control program is obtained through a wireless line, download means for downloading to an area of the memory where data has been stored so far, and after completion of the download, the control means Area switching means for designating an address of an area in which control data is newly downloaded, and for designating an address so as to store data in an area of the memory in which a control program used so far is stored. Characteristic mobile communication terminal. 3. A first memory comprising an electrically rewritable nonvolatile memory for storing a control program for a communication operation.
And a second memory, which is an electrically rewritable non-volatile memory for storing audio data, and a control program stored in a corresponding one of the first memory groups, respectively. A plurality of control means for controlling a communication operation; storing voice data in the second memory; reading and reproducing the voice data; and downloading a new control program obtained through a wireless line to the second memory. Recording / reproduction control means, wherein one of the plurality of control means, after the end of the download, transmits the control program downloaded to the second memory to a corresponding one of the first memory group. A portable communication terminal characterized in that the portable communication terminal is updated and stored.