JPH04348400A - Voice recording device - Google Patents

Abstract

PURPOSE:To securely record a desired voice without missing part of it by recording the voice repeatedly in a prerecording (previous recording) area from a specified address of a memory. CONSTITUTION:A key input part 11 is equipped with a mode switch 11a for switching between a small-sized electronic computer mode and a voice recording mode, a ten-key 11b for specifying the address of a voice recording part, a prerecording (PREREC) key 11c for prerecording (repetitive recording for a specific time), a stop key 11d, a start key 11e, a playback key 11f, a search key 11g, and a pause key 11h, and their operation signals are sent to a control part 12. When the prerecording key 11c is operated, the area for prerecording of a specific time, e.g. 10 seconds is provided from the specified address of the memory 18 and the repetitive recording in this area is performed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio recording device for recording and reproducing audio as a digital signal.

0002

[Prior Art] Recently, small electronic calculators have become more and more multi-functional. It is considered.

[0003] However, in the past, the patent application No. 55-1318 proposed by the present applicant as realizing such a function
There is something like No. 1 (Japanese Unexamined Patent Publication No. 56-111000). This is a system in which numerical data stored in advance is displayed on a display means, and audio is used as information regarding the numerical data.In particular, for recording and reproducing audio, multiple keys are provided in the input section. By operating the address designation key, the storage area of the audio recording unit corresponding to the key operation is specified, and the encoded audio is stored in the storage area,
After that, by operating the address specification key again to specify the storage area of the audio recording section corresponding to the operation key,
The audio code recorded in the storage area is read out and the audio is generated.

0004

[Problem to be Solved by the Invention] However, when the recording operation is started for the voice that one wants to record, the timing is missed because the voice has already been uttered, and part or all of the desired voice is lost. It is conceivable that the data may be recorded with some missing parts. One way to deal with this situation is to start recording the desired audio early, but in some cases this may not be possible, and the storage capacity of the memory that stores the audio may be limited. This is not a very practical method due to capacity limitations.

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide an audio recording device that can reliably record desired audio without missing any part of it.

[0006]

[Means and operations for solving the problem] When the pre-recording key is operated, the pre-recording for a specific period of time, for example 10 seconds, is performed from the designated address in the memory at that time.
A pre-recording area is provided, and recording is performed repeatedly in this area, making it possible to reliably record the desired audio without missing any part of it.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is used as an additional function in a small electronic device such as a small electronic calculator will be described below with reference to the drawings.

FIG. 1 shows the circuit configuration thereof, and 11 is a key input section. This key input section 11 includes a mode switch 11a for switching between a small electronic calculator mode and a voice recording mode, a numeric keypad 11b for specifying an address for the voice recording section, Pre-recording (PRERE) to perform pre-recording (repeated recording of a specific time)
C) Key 11c, stop (S) which instructs to stop each operation.
TOP) key 11d, Start (
START) key 11e, playback (PLAY) key 11f to instruct playback of recorded audio, search (SEARCH) key 11g to search for playback audio, port to instruct pause during playback. A PAUSE key 11h is provided, and these operation signals are sent to the control section 12.

[0009] The control unit 12 stores various programs.
It is composed of an OM, a timing circuit, and the like. The control unit 12 also receives address data, numerical codes,
It outputs various operation commands, giving operation commands and address data to the record management section 13 and address counter 14, as well as giving operation commands to the timer 15.
Display data is sent to the display control section 16, and a recording/playback switching signal is sent to the voice synthesis section 17, respectively.

The address counter 14 performs a counting operation according to address data from the control section 12 or the record management section 13, and specifies an address for an audio memory section 18 that stores digitized audio signals. .

[0011] The audio memory unit 18 has, for example, 2M (mega)
It is composed of a DRAM with a storage capacity of 1 byte, and is capable of storing approximately 2 minutes worth of audio signals.The internal memory can be set to maximum by repeatedly operating the stop key 11d and start key 11e of the key input section 11. It is possible to record audio signals by dividing them into seven areas. If these seven areas are named records 1 to 7, the audio data will be stored in order from the area of record 1 to the area of record 7 according to the address designation of the address counter 14.

[0012] The voice synthesis section 17 is a record management section 13.
It processes audio signals that are written to/read from the audio memory section 18 in response to a recording/reproduction switching signal from the audio memory section 18. The voice synthesis section 17 receives an audio signal inputted through a microphone 19, amplified through an amplifier 20, and then digitized at an A/D converter 21. PCM, A.D.
The audio memory unit 1 is modulated by a modulation method such as PCM.
8 and have it written. On the other hand, the speech synthesis section 17
demodulates the audio signal read out from the audio memory section 18 using a method opposite to the modulation method described above, converts it into an analog value audio signal with the D/A converter 22, and then amplifies it via the amplifier 23, The speaker 24 outputs audio.

The record management section 13 is the audio memory section 1.
8 is used to store address data when performing address control, and as shown in FIG. It consists of a register that stores a stop address and a recorded flag, a recording record register that stores the number of the record area to be recorded at the current time, and a playback record register that stores the number of the record area to be played back.

Each of the recorded flag registers has a storage capacity of 4 bits, and has a black rectangular symbol code indicating that the record area has been recorded, and conversely a code of a black rectangular symbol indicating that the record area has been recorded. A code with a white rectangle symbol to indicate that the record is currently being recorded or played back, but a code with the letter “P” to indicate that recording or playback is paused; A code such as a black triangle symbol indicating that the record is a playback record is stored and set.

The timer 15 is used to measure the repetition time during pre-recording, and its reset, start, etc. are controlled by operation commands from the control section 12, and the timing data is sent to the control section. 12.

[0016] The display control section 16 also includes a control section 12.
The display data sent from the display buffer 16a is held in the display buffer 16a, and sent to the display section 26 via the display decoder 25. The display section 26 is composed of, for example, a liquid crystal display element, and as shown in FIG.
A record consisting of segments corresponding to areas numbered 1 to 7.
It has a code status display section 26a, and a numerical value display section 26b which is made up of a multi-digit Japanese character segment and displays numerical data.

In the figure, record 4 of the audio memory section 18
This shows a state where the audio has been recorded up to the area of record 4 and the audio of the area of record 4 can be played back. If you wish to record further audio at this point, the audio will be recorded in the audio memory section 18.
In addition to the state shown in FIG. 3, the fifth segment at the corresponding position on the record state display section 26a will be displayed blinking. Next, the operation of the above embodiment will be explained. It is now assumed that audio recording is started with nothing recorded in the audio memory unit 18.

First, to set the mode for recording audio, the mode switch 11a of the key input section 11 is set to "R".
When the mode is switched to "EC" mode, the processing shown in FIGS. 4 and 5 is started by setting the "REC" mode.

In FIG. 4, first, as shown in step A01, whether or not there is a recorded record in the audio memory section 18 is determined by checking the recorded flag register corresponding to each record in the record management section 13. Judge based on the content. At this point, there are no recorded records yet, and the contents of the recorded flag registers corresponding to each record are all "0", so the determination result is NO, and the process proceeds to step A02. In step A02, the numerical value "1" indicating the area of the first record 1 is input and set in the recording record register of the record management section 13, and in the subsequent step A03, the recording record register of the record management section 13 is set.
After inputting address "0" to the start address register of record 1 of No. 3, the process proceeds to step A04. In step A04, the current record status is displayed on the record status display section 26a of the display section 26 by subroutine processing.

FIG. 6 shows the processing contents of the subroutine of step A04, and at the beginning, step B01 is executed.
As shown in FIG. 3, a black rectangular code is set in the display area of the display buffer 16a corresponding to the record for which "1" is set as a flag in the recorded flag register of the record management section 13. Here, since there is no recorded flag register record set to "1", the code of the black rectangular symbol is not set to the display buffer 16a. In the following step B02, contrary to step B01, a white rectangular symbol is displayed in the display area of the display buffer 15a corresponding to the record for which "0" is set as a flag in the recorded flag register of the record management unit 13. The code of
Set the code. Here, all the recorded flag registers corresponding to records 1 to 7 are set to "0", so white rectangular symbols are displayed in all display areas corresponding to records 1 to 7 of the display buffer 16a. - is set. Thereafter, in step B03, a blanking code indicating a blank is displayed in the display area of the display buffer 15a corresponding to the record for which the full flag "F" is set as a flag in the recorded flag register of the record management unit 13. Set the code. Since this does not correspond to any of records 1 to 7, this processing is not performed here. Next, in step B04, a black triangle symbol code is displayed in the display area of the display buffer 16a corresponding to the record according to the contents of the playback record register of the record management section 13.
Set the code. Here again, since it does not correspond to any of records 1 to 7, this processing is not performed. Then, in step B05, blinking display data is set in the display area of the display buffer 15a corresponding to record 1 indicated by the recording record register, and the process of FIG. 6 is thus completed.

When the process of displaying the record status in step A04 shown in FIG.
Here, it is decoded and output to the display section 26. As a result, in the display section 26, the display areas indicating records 1 to 7 of the record status display section 25a are all displayed as unrecorded white rectangular symbols, and especially the display area indicating record 1 is displayed as white rectangular symbols. A blinking rectangle symbol is displayed. Step A04
After the record status is displayed as described above, the process waits for the operation of the start key 11e to instruct the start of audio recording in step A05.

When the start key 11e is operated, the process proceeds to step A06, where the contents of the start address register of record 1 indicated by the recording record register of the record management section 13 are set to "0". is input and set in the address counter 14. Next, the process moves to step A07, and an actual recording operation is performed. That is, the analog audio signal input from the microphone 19 and amplified by the amplifier 20 is
The signal is digitized by the A/D converter 21 at a specific sampling frequency and sent to the speech synthesis section 17. The voice synthesis section 17 modulates the input voice signal according to the recording/playback switching signal from the control section 12, and then sends it to the voice memory section 18 for writing. In this case, the address data set as the start address of record 1 in step A06 above is read out from the record management section 13 and set in the address counter 14, and this address data The address counter 14 specifies the writing position of the audio signal in the audio memory unit 18.

Thereafter, in step A08, it is determined whether the specified address of the address counter 14 is the end position of the audio memory section 18, and in step A09, it is determined whether or not the stop key 11d for instructing to stop recording has been operated. If the answer to any of these questions is NO, then
Next, in step A10, the count value of the address counter 14 is updated by "+1", and the process returns to step A07 to continue the recording operation.

Thereafter, the address counter 14 is sequentially updated by "+1" and recording continues until the end position of the audio memory section 18 is reached and the stop key 11d is operated. At this time, the display section 26 performs the same process as shown in FIG.
A white rectangular symbol is displayed in the display area indicating 7.

[0025] If the stop key 11d is operated while recording is being performed as described above, it will start at step A09.
Then, the process proceeds to step A11. Step A1
1, the value of the address counter 14 at that time is set as the stop address of the record 1 of the record management section 13. Next, in step A12, "1" is set in the recorded flag register of record 1 of the corresponding record management section 13 as a flag indicating that it has been recorded, and in the subsequent step A13, the record management section 13 sets the flag to "1". Transfer and set the value ``1'' in the recording record register to the playback record register. Thereafter, in step A14, it is determined from the contents of the recorded flag register whether there are any unused records. Here, records 2 to 7 are unused and the contents of their recorded flag registers are "0", so the judgment result is YES, and the process then proceeds to step A15 to record the contents of the recorded record registers. "1" is updated by "+1" to become "2", and the recording process for record 1 is thus completed. Next, the audio of record 2 is recorded in the audio memory section 18.

That is, in the process shown in FIGS. 4 and 5, first, in step A01, it is determined whether or not there is a recorded record in the audio memory section 18, corresponding to each record in the record management section 13. The judgment is made based on the contents of the recorded flag register. Here, since the recorded flag register of record 1 is "1", the determination result is YES, and the process then proceeds to step A16.

In step A16, the stop address of the last record being used, in this case the stop address of record 1, is read, and this is incremented by "+1" to create the new start address of record 2. As record management department 1
Set the input to 3. Next, in step A17, the numerical value of record 1, which is the largest record currently used, is
1" is updated by "+1" and becomes "2", which is input and set to the recording record register in the record management section 13.

After this, step A04 is reached, and the subroutine
The record status display section 26a of the display section 26 is
Displays the current record status. That is, by the same process as in FIG. 6 above, a black triangular symbol indicating the playback position is displayed in the display area indicating record 1 of the record status display section 26a, and a white unrecorded symbol is displayed in the display area indicating records 2 to 7. In addition to displaying a rectangular symbol, a white rectangular symbol in the display area indicating record 2 is displayed blinking. Step A
After completing the record status display process shown in FIG. 6 in step A04, the process waits for operation of the start key 11d to instruct the start of audio recording in step A05.

When the start key 11e is operated, the process proceeds to step A06, and the contents of the start address register of record 2 indicated by the recording record register of the record management section 13 are stored in the address counter. Set the input to 14. Next, the process moves to step A07, and an actual recording operation is performed in the same manner as in the case of record 1 described above.

Thereafter, until it is determined in step A08 that the specified address of the address counter 14 is the end position of the audio memory unit 18, or it is determined that the stop key 11d instructing to stop recording is operated in step A09. , repeating steps A07 to A10,
Continue recording operation.

When the stop key 11d is operated, this is determined in step A09, and the value of the address counter 14 at that time is stored in the record of the record management section 13.
Set as the stop address for code 2. Next, in step A12, the corresponding record of the record management unit 13 is
A flag indicating that recording has been completed is set to "1" in the recorded flag register of the record management section 13, and the value "2" in the recorded record register of the record management section 13 is set in step A13.
" is transferred to the playback record register. Thereafter, in step A14, it is determined from the contents of the recorded flag register whether there are any unused records. Here, records 3 to 7 are unused and the contents of their recorded flag registers are "0", so the judgment result is YES, and the process then proceeds to step A15 to record the contents of the recorded record registers. "2" is updated by "+1" to become "3", and the recording process for record 2 is thus completed. After that, record 3
, 4 is assumed to have been performed by the same process as above.

At this point, address data is written in the start address register and stop address register corresponding to records 1 to 4 of the record management section 13, and a flag is written in the recorded flag register. “1” is set. Furthermore, the contents of the recorded flag register corresponding to records 5 to 7 of the record management unit 13 are "0", and the contents of the recording record register are "5" indicating record 5. , the content of the playback record register becomes "4" indicating record 4. Each recorded flag register and recording record
Depending on the contents of the record register and playback record register, the record status display section 26a of the display section 26 displays records 1 to 3.
A black rectangular symbol indicating the recorded record is placed in the display area indicating record 4, and a black triangle symbol representing the next playback position is placed in the display area indicating record 4.
An unrecorded white rectangular symbol is displayed in the display area indicating records 5 to 7, and the display area indicating record 5 is displayed blinking.

Although not shown above, if it is determined in step A08 that the specified address of the address counter 14 is the end position of the audio memory section 18, no further recording can be performed, so the next recording cannot be performed. The process then proceeds to step A18, where a FULL flag "F" is set in the recorded flag register corresponding to the record after the record specified in the recording record register, and then the process proceeds to step A11.

[0034] Also, in step A14 above, unused records are
If it is determined that there is no record, the process proceeds to step A19, where the numerical value "1" indicating the first record 1 is set in the recording record register, and this process is terminated. In this state, press pre-recording key 1 to instruct repeated recording for a certain period of time.
When 1c is operated, Figs. 7 and 8 are displayed for that key operation.
The processing shown in is performed.

In FIG. 7, first, as shown in step C01, whether or not there is a recorded record in the audio memory section 18 is determined by checking the recorded flag register corresponding to each record in the record management section 13. Judge based on the content. Here, since up to record 4 has been recorded, the determination result is YES, and the process then proceeds to step C02. In step C02, the stop address of record 4, which is the last record among the recorded records, is read out, updated by "+1", and set as the new start address of record 5. input. Next, in step C03, the numerical value "4" of record 4, which is the largest record currently in use, is updated by "+1" to become "5", and this numerical value "5" is stored in the same record management section. It is input to the recording record register in 13. Thereafter, in step C04, the contents of the start address register of record 5 indicated by the recording record register of the record management section 13 are transferred and set to the address counter 14. Next, at step C05, a flag "1" is set in the recorded flag register of this record 5. Next, the process proceeds to step C06, where the timer 15 starts counting the repetition time of pre-recording.

Next, the process moves to step C07, and a pre-recording recording operation is executed. That is, an analog audio signal input from the microphone 19 and amplified by the amplifier 20 is digitized by the A/D converter 21 at a specific sampling frequency and sent to the audio synthesis section 17. The voice synthesis section 17 modulates the input voice signal according to the recording/playback switching signal from the control section 12, and then sends it to the voice memory section 18 for writing. At this time, the count value of the address counter 14 is sent to the audio memory section 18 to designate the writing position of the audio signal.

Thereafter, in step C08, it is determined whether or not the stop key 11d for instructing to stop recording has been operated, and in step C09, the clock value of the timer 15 is determined to be a preset repetition time "T", for example, "10 seconds". If it is determined NO in either of these cases, the time value of the timer 15 is set to "+1" in step C10, and the address counter is set to "+1" in step C11. The count value of 14 is continuously updated by "+1", and the process returns to step C07 to continue the recording operation. Thereafter, step C is performed until the stop key 11d is operated and until the timer value of the timer 15 reaches "T".
The processes from 07 to C11 are repeated to continue pre-recording.

[0038] Continue pre-recording as described above and set the timer.
When the time value of No. 15 reaches the preset value "T", this is determined in step C09, and the process then proceeds to step C12. In step C12, the time value of the timer 15 is reset, and in the subsequent step C13, the current count value of the address counter 14 is transferred and set to the stop address register of record 5 of the record management section 13. At this point, as shown in FIG.
This means that it was set as record 5. Next, in step C14, the record is set to perform repeated recording in the area of record 5 newly set in the audio memory section 18.
The contents of the start address register of record 5 of the card management section 13 are transferred to the address counter 14, and then,
Step C07 until the stop key 11d is operated again and the timer value of the timer 15 reaches "T".
The processes from to C11 are repeated to continue pre-recording.

If the stop key 11d is operated during pre-recording as described above, it will stop at step C.
The determination is made in step C15, and the process then proceeds to step C15. In step C15, it is determined whether the stop address register of record 5 is set according to the value "5" in the recording record register of the record management section 13. this is,
This is to determine whether or not the above step C13 has been performed, that is, whether or not the area in the audio memory unit 18 has been set by pre-recording.If the determination is NO, then step C16 is performed. The count value of the address counter 14 at that time is transferred and set to the stop address register of record 5, but since the stop address of record 5 has already been set, this process is omitted, and the next step It reaches C16.

In step C16, the timer 15 is reset, and in the subsequent step C17, the content "5" of the recording record register of the record management section 13 is transferred and set to the reproduction record register. In the next step C18, it is determined from the contents of the recorded flag register whether there are any unused records. Here, records 6 and 7 are unused and the contents of their recorded flag registers are "0", so the judgment result is YES, and the process then proceeds to step C19 to prepare for later recording processing. Therefore, the content "5" in the recording record register is updated by "+1" to become "6", and this recording process is thus completed.

At this point, address data is written in the start address register and stop address register corresponding to records 1 to 5 of the record management section 13, and a flag is written in the recorded flag register. “1” is set. Furthermore, the contents of the recorded flag register corresponding to records 6 and 7 of the record management unit 13 are "0", and the contents of the recording record register are "6" indicating record 6. , the content of the playback record register becomes "5" indicating record 5. Each recorded flag register and recording record
Depending on the contents of the record register and playback record register, the record status display section 26a of the display section 26 displays records 1 to 4.
A black rectangular symbol indicating the recorded record is placed in the display area indicating record 5, and a black triangle symbol representing the next playback position is placed in the display area indicating record 5.
An unrecorded white rectangular symbol is displayed in the display area indicating records 6 and 7, and the white rectangular symbol in the display area indicating record 6 is displayed blinking.

Further, if it is determined in step C18 that there is no unused record, the process proceeds to step C20.
A numerical value "1" indicating record 1, which is the first record, is set in the recording record register, and this processing is completed.

Although not shown above, step C
If it is determined in step C21 that there is no recorded record, the area in the audio memory unit 18 set by the pre-recording is set as the area of record 1, so step C21 is next performed.
In step C22, input and set the numerical value "1" indicating record 1 in the recording record register of the record management section 13, and in the following step C22, set the start of record 1 in the record management section 13.
After inputting and setting the address "0" to the host address register, the process proceeds to step C04. Next, the reproduction operation of the audio signal recorded as described above will be explained.

FIG. 10 shows the reproduction process in response to the operation of the reproduction key 11f. When the playback key 11f is operated immediately after stopping recording, first, in step D01, it is determined whether or not there is a used record in the audio memory section 17 based on the presence or absence of the recorded flag register in the record management section 13. do.

[0045] If it is determined that there are no used records, playback cannot be performed, so press the playback key 11.
The f operation is invalid (NOP), but since records up to record 5 are used here, the judgment result is YES.
Next, the process advances to step D02.

In step D02, the record management section 13
Whether or not record 5 designated by the numerical value "5" in the playback record register is in use is determined based on the contents of the recorded flag register. If it is determined that it is not in use, then the process goes to step D03, where the content of the playback record register is updated by "+1" and then the process goes to step D02 again, but here the judgment result is YES.
Next, the process advances to step D04.

In step D04, the contents of the start address register of the record 5 indicated by the recording record register of the record management section 13 are input and set in the address counter 14. Next, the process moves to step D05, and an actual playback operation is executed.

That is, the audio signal written in the position specified by the address counter 14 of the audio memory section 18 is read out to the audio synthesis section 17. Speech synthesis section 1
7 demodulates the input audio signal according to the recording/playback switching signal from the control unit 12, and then converts the input audio signal to the D/A converter 22.
and converts it into an analog audio signal. This audio signal is amplified by an amplifier 23, and a speaker 24 is driven to output audio.

Thereafter, in step D06, it is determined whether or not the playback key 11f for instructing repeat playback has been operated.
At step D07, the address counter 14 checks whether or not the stop key 11d, which instructs to stop playback, has been operated.
It is then determined whether the designated address becomes the stop address of record 5 or not. If both of these are determined to be NO, then in step D09 address counter 1 is
Update the count value of 4 by "+1" and go to step D again.
The process advances to step 05 to continue the playback operation. In this way, playback key 1
The count value of the address counter 14 is sequentially updated by "+1" until the stop key 1f and stop key 11d are operated, and reproduction continues.

At this time, the display section 26 displays records 1 to 1 on the record status display section 26a through the same process as shown in FIG.
The display area showing record 4 is displayed as a black rectangular symbol indicating that it has been recorded, the display area indicating record 5 is displayed as a black triangle symbol indicating the playback position, and the display area indicating records 6 and 7 is displayed as a white rectangular symbol indicating that it has not been recorded. Ru.

If the pause key 11h is operated during playback as described above, the update setting of the count value of the address counter 14 is temporarily interrupted, and the audio playback is temporarily stopped. Along with this, the character "P" indicating a temporary stop is added to the recorded flag register of record 5 in the record management section 13.
The code "P" is written, and the letter "P" is displayed in the display area indicating record 5 of the record status display section 26a of the display section 26. Subsequently, when the playback key 11f is operated again, the pause of playback caused by the pause key 11h is canceled in response to this key operation. Furthermore, if the playback key 11f is operated during playback, it is determined in step D06 that the playback key 11f has been operated again, and the next step is step D1 for repeat playback.
It reaches 0.

In step D10, address counter 1
The value "N" is subtracted from the count value of 4, and the result of the subtraction is newly set in the address counter 14. This value “
"N" is preset as the count value of the address counter 14 corresponding to, for example, "3" seconds of time, and the subtraction result set in the address counter 14 in the subsequent step D11 is the start address of record 5. It is determined whether or not the value is greater than or equal to the value in the register, that is, whether the count value of the address counter 14 has not been returned too much. If the result of the subtraction is equal to or greater than the value of the start address register of record 5, the process from step D05 is performed according to the counter of the address counter 14 set for the subtraction, and the reproduction is repeated. Also, the subtraction result set in the address counter 14 in step D11 is record 5.
If it is determined that the value of the address counter 14 has been returned too much, the process proceeds to step D04 and the start address of record 5 is transferred to the address counter 14 again. After the settings are made, the process proceeds to the playback process of step D05. In this way, the playback key
The count value of the address counter 14 is sequentially updated by "+1" until the stop key 11f and stop key 11d are operated, and reproduction continues.

[0053] When all the audio signals of record 5 stored in the audio memory section 18 have been reproduced and the specified address of the address counter 14 becomes equal to the stop address of record 5, this is determined in step D08. This completes the playback process.

At this time, in the record status display section 26a of the display section 26, the display area indicating records 1 to 4 is a black rectangular symbol indicating the recorded state, and the display area indicating record 5 is a black triangle indicating the playback position. The display areas showing symbols and records 6 and 7 are displayed as unrecorded white rectangular symbols, and the display area showing record 6 as the next recording record is displayed blinking.

[0055] When the search key 11g is operated, the playback record register of the record management section 13 is incremented by ``+1'', a new input setting is made, and if this record has already been recorded, the audio signal is It is read out and played back. However, "+1"
If the reproduced record is unrecorded, reproducible records are sequentially searched and their audio signals are reproduced.

[0056]

[Effects of the Invention] As detailed above, according to the present invention,
When the pre-recording key is operated, pre-recording for a specific period of time, for example 10 seconds, is performed from the specified memory address at that time (
By setting up an area (pre-recording) and repeatedly recording in this area, it is possible to reliably record the desired sound, and the key operations can be easily performed without distinguishing them from normal recording. At the same time, it is possible to provide an audio recording device that can hold a large amount of pre-recorded audio data in an arbitrary area of the memory.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a circuit configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a register configuration of the record management section in FIG. 1;

FIG. 3 is a diagram showing a display segment configuration of the display unit in FIG. 1;

FIG. 4 is a flowchart showing the processing contents of a recording operation in audio recording mode.

FIG. 5 is a flowchart showing the processing contents of the recording operation in the audio recording mode following FIG. 4;

FIG. 6 is a flowchart showing a subroutine of record status display processing in FIG. 4;

[Figure 7] Flowchart showing processing for pre-recording key operation
Chart.

FIG. 8 is a flowchart showing processing for the operation of the pre-recording key following FIG. 7;

FIG. 9 is a diagram illustrating the setting of the record area of the audio memory section by pre-recording.

FIG. 10 is a flowchart showing processing for playback key operations.

[Explanation of symbols]

11...Key input section, 11a...Mode switch, 11b...
Numeric keypad, 11c...Pre-recording (PRE REC) key
, 11d...Stop key, 11e...Star
START key, 11f...PLAY key
, 11g...SEARCH key, 11h...Port
PAUSE key, 12...Control unit, 13...Record management unit, 14...Address counter, 15...Timer, 1
6... Display control unit, 16a... Display buffer, 17... Voice synthesis unit, 18... Voice memory unit, 19... Microphone, 2
0, 23...Amplifier, 21...A/D converter, 22...D
/A converter, 24... Speaker, 25... Display decoder, 26... Display section, 26a... Record status display section, 26b
...Numeric display section.

Claims (1)

[Claims] Claim 1: Audio that can convert an audio signal input from an audio input element into a digital signal and store it in a memory, convert the audio signal stored in the memory into an analog signal, and reproduce and output it from an audio output element. In the recording device, there is a pre-recording key that instructs the execution of pre-recording, which is repeated recording for a certain period of time, and a memory capacity for a specific period of time from the specified address of the memory at the time when this pre-recording key is operated. area setting means for setting a pre-recording area having;
An audio recording device characterized by comprising: recording control means for storing audio signals in the pre-recording area set by the area setting means while rewriting the recording contents at specific time intervals.