JPH09179599A - Voice recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prolong he life of a memory by providing a data recording means and a recording address administration means, etc., by which a high rewriting frequency data group administrates the addresses recorded by a low rewriting frequency data group, and equally using an entire memory. SOLUTION: At the time of voice-recording, a voice signal inputted from a microphone 101 is converted into digital data by an A/D converter 103, being subjected to a compression-processing in each frame by an encoder 104, being sent to CPU 105 in each frame, and being recorded in a solid memory 110 with various additional data and various management data which accompany the voice data, via an interface part 111. And since theaddress administration of the recorded memory is done by administrating the addresses recorded by a low rewriting frequency data group by a high rewriting frequency data group, an entire memory is equally used and the memory life can greatly be prolonged.

Description

Detailed Description of the Invention

[0001]

The present invention relates to an audio recording / reproducing apparatus.

[0002]

2. Description of the Related Art An audio recording / reproducing apparatus for converting an audio signal into digital data, recording it in a rewritable solid-state memory, and reproducing the audio signal from the solid-state memory has been conventionally known. JP-A-6-162791 or JP-A-7-162791
Japanese Patent Publication No. 168600 discloses such an audio recording / reproducing apparatus.

In these devices, the entire memory is divided into a plurality of blocks each consisting of a predetermined block unit,
The data to be recorded is recorded in a plurality of blocks in this block unit. Memory management is performed by recording the address of each block in which data is recorded and the order of each block in a specific area of the memory as an access table. Further, additional data associated with the audio data such as the recording date and time, the audio file name, the name of the recording person, and erroneous erasure protection are also recorded in a specific area of the memory in association with the audio data.

Further, in consideration of the case of rewriting recorded data, a memory such as a flash memory capable of erasing and rewriting data in blocks is used, which simplifies the configuration and integrates the memory. I try to increase my degree.

[0005]

However, a memory such as a flash memory is generally limited in the number of rewrites, and when data that needs to be rewritten frequently, such as an access table, is recorded in a specific area of the memory, that area is rewritten. However, there is a drawback that the entire memory becomes unusable because the rewrite limit is reached before the other areas.

Further, when management data such as access table data and additional data accompanying audio data are recorded in a specific area of the memory, even when only a part of the data is rewritten, the data is erased in block units. It was necessary to store the data for a unit in another memory, execute the erasing, and rewrite the data at the same address again, resulting in unnecessary processing time and an extra memory area for a block unit.

Further, since the management data and the additional data are collectively recorded at the same place in the specific area of the memory, each time the data which is relatively frequently rewritten is rewritten, the data which is relatively frequently rewritten is also rewritten. It wasted wasted processing time.

The audio recording / reproducing apparatus of the present invention has been made in view of such a problem, and its purpose is to use not only a specific area of the memory but also the entire memory uniformly. It is an object of the present invention to provide an audio recording / reproducing device capable of extending the life of the device.

Another object of the present invention is to provide an audio recording / reproducing apparatus capable of reducing the memory capacity required for rewriting data as much as possible.

Another object of the present invention is to provide an audio recording / reproducing apparatus capable of performing memory management so that the data to be rewritten is minimized when rewriting various management data and additional data. To do.

[0011]

In order to achieve the above object, an audio recording / reproducing apparatus according to a first aspect of the present invention includes audio data converted into digital data, a plurality of additional data attached to the audio data, and A classifying unit that classifies a plurality of management data for managing recorded data into a plurality of groups according to the rewriting frequency of the data, and a solid-state memory that is rewritable in block units, and a memory that records the data for each group A data recording unit that records data without fixing the address, and a recording address management unit that manages the addresses recorded by the data groups whose rewriting frequency is low and whose rewriting frequency is low.

The audio recording / reproducing apparatus according to the second invention converts an audio signal into digital data, records it in a rewritable solid-state memory in units of the first block, and reproduces the audio signal from the solid-state memory. A device for classifying digitized voice data, a plurality of additional data accompanying voice data, and a plurality of management data for managing recorded data, for each data, into a data group of a plurality of groups Means, first recording means for recording data in a second block unit in which the memory address to be recorded is not fixed for each group, and the data groups of the upper group and the data groups of the lower group are hierarchically grouped. And a second recording means for recording the memory address data in which the is recorded.

An audio recording / reproducing apparatus according to a third aspect of the invention is an apparatus for converting an audio signal into digital data, recording it in a rewritable solid-state memory in block units, and reproducing the sound signal from the solid-state memory. The first, second, third, fourth and fifth audio data converted into digital data, a plurality of additional data accompanying the audio data, and a plurality of management data for managing the recorded data. The data group of the first group includes memory address data in which the data groups of the second and fifth groups are recorded, and the data group of the second group is classified. Includes memory address data in which the data groups of the third, fourth, and fifth groups are recorded.
The data group of the group includes memory address data in which the data group of the fifth group is recorded.

An audio recording / reproducing apparatus according to a fourth aspect of the invention is an apparatus for converting an audio signal into digital data, recording it in a rewritable solid-state memory in block units, and reproducing the sound signal from the solid-state memory. Therefore, some of the audio data converted to digital data, the additional data accompanying the audio data, and the multiple management data for managing the recorded data can be changed in content. When rewriting, all the data in the first memory block including the data to be changed are rewritten to the second memory block including the data whose contents are not changed, and the first memory block. Change the data in the third memory block where the address data of the second memory block was recorded to the address data of the second memory block, Also includes a second rewriting means for rewriting the fourth memory block including data that does not change the contents of all of the data in the memory block.

That is, the audio recording / reproducing apparatus according to the first aspect of the invention includes audio data converted into digital data, a plurality of additional data accompanying the audio data, and a plurality of management data for managing the recorded data. For each data,
Divide into multiple groups according to the rewriting frequency,
Data is recorded in a rewritable solid-state memory in block units without fixing the memory address to be recorded for each group, and a data group having a high rewriting frequency manages the recorded address of a data group having a low rewriting frequency.

The audio recording / reproducing apparatus according to the second invention converts an audio signal into digital data, records it in a rewritable solid-state memory in the first block unit, and reproduces the audio signal from the solid-state memory. In the device, digitized voice data, a plurality of additional data accompanying the voice data, and a plurality of management data for managing the recorded data are classified for each data into a data group of a plurality of groups, Data is recorded in units of the second block in which the memory address to be recorded is not fixed for each group, and the memory address data in which the data group of the lower group is recorded is added to the data group of the upper group by hierarchically grouping the groups. And record it.

The audio recording / reproducing apparatus according to the third aspect of the invention is an apparatus for converting an audio signal into digital data, recording the same in a rewritable solid-state memory in block units, and reproducing the sound signal from the solid-state memory. The first, second, third, fourth and fifth audio data converted into digital data, a plurality of additional data accompanying the audio data, and a plurality of management data for managing the recorded data. The data group of the first group includes memory address data in which the data groups of the second and fifth groups are recorded, and the data group of the second group is the third, The data groups of the fourth and fifth groups include recorded memory address data, and the data group of the fourth group includes memory address data in which the data group of the fifth group is recorded. To useless.

An audio recording / reproducing apparatus according to a fourth aspect of the invention is an apparatus for converting an audio signal into digital data, recording it in a rewritable solid-state memory in block units, and reproducing the sound signal from the solid-state memory. Therefore, some of the audio data converted to digital data, the additional data accompanying the audio data, and the multiple management data for managing the recorded data can be changed in content. When rewriting, all the data in the first memory block including the data to be changed are rewritten to the second memory block including the data whose contents are not changed, and the address data of the first memory block is recorded. The data stored in the third memory block is changed to the address data of the second memory block, and the third memory block is changed. Tsu for all data in the click to be rewritten in the fourth memory blocks, including data that does not change the contents.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing the configuration of a solid-state memory audio recording / reproducing apparatus to which the present invention is applied. In the figure, the microphone 101 includes a CPU 10 through an input amplifier 102, an A / D converter (A / D) 103, and an encoder 104 in order.
5 is connected to the first terminal. In addition, the speaker 106
Are the output amplifier 107 and the D / A converter (D / A) 10 in order.
8, connected to the second terminal of the CPU 105 via the decoder 109.

Further, a liquid crystal display (LCD) 112 is connected to the third terminal of the CPU 105, and an operation input section 11 is connected to the fourth terminal.
3 are connected to each other, and the solid-state memory 110 is connected to the fifth terminal through an interface (I / F) 111.

In the above structure, at the time of voice recording,
The audio signal input from the microphone 101 is input to the input amplifier 10
Amplified by 2, and converted into digital data by the A / D converter 103. Sampling frequency at A / D conversion is 8K
Hz, the quantization number is 8 bits. The A / D converted digital data is compressed by the encoder 104 in frame units. One frame has a cycle of 25 msec. 24 bytes per high-quality sound mode and 12 in low-quality sound mode.
Compressed into bytes of data. The compressed audio data is sent to the CPU 105 on a frame-by-frame basis and is recorded in the solid-state memory 110 via the interface unit 111 together with various additional data accompanying the audio data and various management data.

Further, at the time of audio reproduction, the audio data already recorded in the solid-state memory 110 is sent to the CPU 105 via the interface unit 111 in 1-frame units, and is further decoded in frame units by the decoder 109 to have a 8 KHz cycle. Converted to 8-bit data. Next, D / A converter 1
After being converted into an analog signal by 08 and amplified by the output amplifier 107, the speaker 106 outputs the sound.

Further, the CPU 105 sets modes such as recording, reproducing and erasing according to the operation input from the operation input unit 113. In addition, the audio data recorded in the fixed memory 110 is managed in file units, and the writing, reading, and erasing of the audio data to the solid-state memory 110 are controlled according to the operation input from the operation input unit 113. Further, according to the operation input from the operation input unit 113, various kinds of additional data accompanying the voice data are set, and the solid-state memory 110
Or read out various additional data associated with the audio data recorded in the solid-state memory 110 and display it on the liquid crystal display unit 112. Further, the CPU 105 has a built-in clock function and counts the current date and time.

The solid-state memory 110 is a solid-state memory that can be rewritten in block units, and has a memory capacity of 2M here.
Bytes, one block is 1K bytes 2048
Shall be composed of blocks. Solid-state memory 11
0 may be integrated with the audio recording / reproducing apparatus main body or may be a separate body. When separated from the main body, the interface unit 111 includes a communication control circuit that controls communication between the main body and the solid-state memory 110, an antistatic circuit, and a contact circuit. Further, when the main body and the solid-state memory 110 are integrated, the CPU 105 and the solid-state memory 110 may be directly connected without the interface section 111.

FIG. 2 shows a liquid crystal display (LCD) 1 shown in FIG.
It is a figure which shows the detailed structure of 12. In FIG.
Reference numeral 1 is a segment indicating an audio data file, and here, 10 files (1 to 10) are prepared and displayed. The operator can select a desired file from these files to perform recording / playback / erasing. The file segment being selected is indicated by a blinking frame segment, and FIG. 2 shows a state in which the file 4 is selected. A file in which audio data is recorded even a little is displayed in a thick frame line, and a file in which no audio data is recorded, that is, a deleted file is displayed in a thin frame line. In FIG. 2, files 1, 2, 4, and 7 are displayed with thick frame lines, indicating that audio data is recorded in these files. Also, files 3, 5,
6, 8, 9, and 10 are displayed with thin frame lines, and indicate a state in which audio data is not recorded.

In addition, a bar segment in the frame is lit according to the recording time of a recorded or recorded file.
Here, one segment is lit every 3 minutes of recording time. In FIG. 2, file 1 has 3 minutes or more, file 2 has less than 3 minutes, file 4 has 6 minutes or more, and file 7 has 9 minutes.
It indicates that more than one minute of audio data is recorded.

Reference numeral 202 is a segment indicating the priority (priority) of the file, and designates the priority when converting the voice data into text. Reference numeral 203 denotes a segment indicating erroneous erasure prevention protection for each file, and a file for which 203 is lit cannot be erased. Reference numeral 204 is a segment for performing an 8-digit dot matrix display composed of 7 dots × 5 dots per digit, and various displays can be performed. Reference numeral 205 is a segment showing the content displayed by the dot matrix display segment 204. When 205 is unlit, the dot matrix display segment 204 displays the currently selected file number and the time from the beginning of the file. Also, 20
When 5 is displaying "TITLE", the dot matrix display segment 204 displays the title name of the currently selected file. Also, 205 is “NA
When "ME" is displayed, the dot-matrix display segment 204 displays the name of the person who recorded the currently selected file. Also, 205 indicates "SECRE".
When "TARY" is displayed, the dot-matrix segment 204 displays the destination name for which the currently selected file is desired to be converted into text.

Further, 206 is a segment indicating an erase operation. A segment 207 displays the date and time when the currently selected file was recorded. Reference numeral 208 is a segment for displaying the remaining recordable time. Here, a solid memory of 2 Mbytes allows recording of all files for 30 minutes.

FIG. 3 is a diagram showing a detailed structure of the operation input unit 113 shown in FIG. In the figure, SW211, S
W213 is for moving the file when selecting the file, and moving the cursor for the segment 204 in the dot matrix display when inputting the file name / recorder name / destination name,
S to select alphabet when entering alphabet
W. SW212 is a determination SW for determining the cursor position on the dot matrix display segment 204 and the input character at the time of alphabet input. SW2
Reference numeral 14 is a SW for alphabet input.
The SW 215 is a display switching SW that switches the display content of the dot matrix display.

In the initial state, the dot matrix display segment 204 displays the file number and the current position time from the beginning of the file. Then, each time the operator presses SW211 or SW213 to select a specific file, the operator moves to the next file or the previous file one by one, and the thick frame line of the segment 201 of the file display blinks. At the same time, the dot matrix display segment 204 displays the file number of the moved file and the current position where the file was last recorded / played.

When the display switching SW 215 is pressed, the dot matrix display is switched to the file name display. The file number is displayed for files for which no file name has been entered. When SW211 and SW213 are pressed while the file name is displayed, the next file or the previous file is selected one after another, and the file name of the selected file is displayed.

When the display switching SW 215 is pressed again, the dot-matrix display segment 204 displays the name of the recorder for each file. A blank is displayed for files for which no recorder name has been entered. When the display switching SW 215 is further pressed, the dot matrix display segment 204 displays the destination name for each file.

If the alphabet input SW 214 is pressed while the dot-matrix display segment 204 is displaying the file name, the recorder name, or the destination name, the mode shifts to the character input mode. In this case, first, the cursor blinks at the bottom of the leftmost digit of the dot-matrix display segment 204, so the operator moves the cursor left and right to the character position to be input or modified by SW211 and SW213. When reaching the left and right ends, scroll up to 16 characters. After moving the cursor to the character position you want to enter or correct, press the confirmation switch
When 212 is pressed, the character at the position where the cursor is displayed is switched to reverse display or blinking display. When the selection SW211 or SW213 is pressed during the reverse display or blinking display, the display characters are switched and displayed in alphabetical order.

After the character to be input is selected, the operator presses the confirmation SW 212 to confirm the input. When the input is confirmed, the inverted or blinking display is switched to the normal display, and the operator moves the cursor to the next character position to be input / corrected with SW211 or SW213. After inputting all the characters, pressing the alphabet input switch 214 again causes the cursor to disappear and the input characters to be written in the memory. Up to 16 characters can be entered for each item.
You can enter 3 items for each file. Here, the file name, the recorder name, and the recipient name are entered, but they may be used for other purposes.

There are 74 types of characters that can be input: 26 uppercase letters and 26 lowercase letters of the alphabet, 10 numbers, other symbols and 10 blanks, a symbol indicating insertion and a symbol indicating deletion. When the operator selects the symbol indicating insertion and presses the confirmation SW 212, the characters after the cursor position are shifted to the right one by one, and the blank character is inserted at the cursor position so that the character selection can be continued. Also,
When the operator selects the symbol indicating deletion and presses the confirmation SW 212, the character at the cursor position is deleted and the characters after the cursor position are shifted to the left one by one.

The SW 216 is a SW for recording an I mark (instruction mark). The operator is SW
When the user presses 216, an I mark is recorded in the voice data at the current position, which allows the voice data at the position where the I mark is recorded to be searched and reproduced later. SW217
Is a SW for recording a P mark (priority mark), and when the operator presses SW217, the priority display 202 is lit on the currently selected file, and the operator who writes the voice data into a file writes the file. You can specify the priority. The file is already turned on by the priority display 202, and the operator again presses SW21.
Press 7 to clear the priority record and display 202
Turn off the light.

SW 218 is a switch for setting erroneous erasure prevention protection. When the operator presses SW 218, the erroneous erasure prevention protect mark is recorded in the currently selected file and the segment 203 is turned on. Files that are protected from accidental erasure cannot be erased. If the SW 218 is pressed for a file that has already been protected against accidental erasure, the accidental erasure protect record is erased and the display 203 is turned off.

Further, SW219 and SW222 are fast-reverse and fast-forward SW. When these SWs are pressed, fast-reverse and fast-forward are performed from the displayed current position. Fast-reverse and fast-forward are performed for each file and stopped when the beginning or end of the file is reached. SW220 is for recording / playback.
This is a SW that stops fast forward / fast reverse. SW221 is a reproduction SW, and when the operator presses the reproduction SW221, the sound is reproduced from the current position displayed. Playback is performed for each file and is stopped when the end of the file is reached. When the operator presses the I mark SW 216 during reproduction, the reproduction is continued by skipping to the closest audio data position after the current position where the I mark is recorded.

When there is no I mark recording after the current position of the selected file, the reproduction is continued without skipping. Here, in fast-reverse / fast-forward playback, it stops when reaching the end or the end of the file and does not operate any more.However, without stopping, skips to the next end of the file or the end of the previous file and continues the mode You may do it. Alternatively, the operation may be stopped once and then skipped by re-inputting the SW.

Further, the SW 223 is an erasing SW. When the operator presses the erasing SW 223 at the head of the portion to be erased, the erasing display segment 206 blinks and the erasing head position is stored. Next, when the operator moves to the end position of the portion to be erased by fast rewind / fast forward / play and presses the SW 223 again, the erase display segment 206 is turned on and the erase end position is stored. When the operator presses the SW 223 again within 5 seconds after the erase display segment 206 is turned on, the stored voice data in the erase range is erased and the erase display segment 206 is turned off.

When the operator pushes the SW 223 twice (twice in a few seconds in succession), it means that the entire file currently selected is instructed to be erased. In this case, first, the thick frame line of the file display 201 is blinked at a cycle different from the normal one and the erase display segment 206 is turned on. When the operator presses the SW 223 again within 5 seconds, the audio data of the entire file and the data (including the file name, the recorder name, the destination name) added to the file are deleted, and the selected file display 201 is displayed. It turns into a thin border.

If the SW 223 is not pressed within 5 seconds after the erasing display segment is lit, or if another operation input is made by the operator, the erasing operation is canceled to prevent the erasing. Further, as described above, a file which is protected against accidental erasure will not be erased by displaying an alarm.

SW 224 is a recording SW, and the operator
By operating in combination with W219 to SW222 or by operating independently, four kinds of recording modes as described below are executed.

The recording mode will be described below with reference to FIG. FIG. 4A is a diagram showing a state of the overwrite recording mode, which is executed by pressing the recording SW 224 and the reproduction SW 221 at the same time. As shown in the figure, the file before the start of recording has audio data A-
It is assumed that C is recorded and the current position is point B, which is 2 minutes from the beginning of the file. If overwrite recording is performed for 1 minute from point B, the audio data BD before recording is deleted,
It is replaced with newly recorded voice data B'-D '.
The recording time A'-C 'of the entire file does not change.

FIG. 4B is a diagram showing the state of the insert recording mode, which is executed by pressing the recording SW 224 and the stop SW 220 at the same time. Current position B before recording starts
If you insert and record for 1 minute from the point, the recorded voice data B '
-D'is inserted from the B'point and voice data B before recording-
C becomes D'-C '. In this case, the recording time A'-C 'of the entire file is added by the recording time.

FIG. 4C is a diagram showing a state of the table-of-contents recording mode, which is executed by simultaneously pressing the recording SW 224 and the fast-reverse SW 219. In this mode, no matter where the current position B is before the start of recording, the file is inserted and recorded at the beginning D'-A 'of the file. By recording the outline of the file contents as the contents to be recorded, the contents can be used for a file search at the time of reproducing at a later date. Further, by recording a table-of-contents signal in the audio data at the end of the table-of-contents recording section, it is possible to reproduce only the table-of-contents recording section.

FIG. 4D is a diagram showing a state of the additional recording mode, which is executed by simultaneously pressing the recording SW 224 and the fast-forward SW 222. In this mode, regardless of the current position B before the start of recording, the file is first skipped to the end of the file and recorded at the end of the file C'-D '.

The above-mentioned four recording modes are the recording SW 22.
4 and the other operation SWs 219 to 222 are simultaneously pressed. However, when the recording SW 224 is operated independently, any one of the above four modes may be executed. . Particularly in the case of an erased blank file, all of the above four recording modes have the same operation, and therefore recording may be performed only by the recording SW 224. Further, when recording is performed from the end position of the file, the overwrite recording / insertion recording / additional recording mode has the same operation, so it is only necessary to distinguish it from the table of contents recording mode.

FIG. 5 is a diagram showing the configuration of the solid-state memory 110 shown in FIG. Here, the entire memory has a capacity of 2 Mbytes and is managed by being divided into 2048 blocks of 1 Kbyte each. Then, each block is assigned a block number from block 0 to block 2047 in the order of memory addresses.

A flash memory is used as the solid-state memory 110. When recording, the voice data is recorded byte by byte, but when erasing, it is erased in block units. Therefore, the structure is simplified and the degree of integration can be increased. As shown in FIG. 5, here, the erase blocks of the solid-state memory 110 are composed of erase blocks 0 to 511, and each erase block has 4 blocks.
It is composed of 4 blocks with a size of K bytes, and therefore when rewriting data, data for 4 blocks is rewritten at the same time. In the solid-state memory 110, after erasing, all the bit data are 1 and the 1-byte data is "FFH".

Further, the voice data recorded in the solid-state memory 110, the additional data accompanying the voice data, and the management data for managing the recorded data are plural by the CPU 105 as the classification means according to the rewriting frequency for each data. Groups, here five types of groups are grouped and recorded in block units. That is, the groups are hierarchized and the memory address data in which the data group of the lower group is recorded in the data group of the upper group is recorded. Then, the CPU 105 as the recording address management means manages the recording address of the data group having the high rewriting frequency and the data group having the low rewriting frequency.

Here, the five types of data groups are the current position block (first group) in which data relating to the current position in which recording and reproduction are performed and the overall data in which management data of the entire memory is recorded. Block (second
Group), an additional data block in which additional data is recorded for the entire memory and for each audio file (third group), and an access table block (memory group for each block and the access order of the audio data block are recorded). A fourth group) and audio data blocks (fifth group) in which audio data and additional data recorded at the same time as the audio data are recorded.

In this embodiment, as will be understood from the following description, the data group of the first group includes the memory address data in which the data groups of the second and fifth groups are recorded, and the data group of the second group The group includes memory address data in which the data groups of the third, fourth, and fifth groups are recorded, and the data group of the fourth group includes memory address data in which the data group of the fifth group is recorded. Contains.

Further, the contents of any one of the audio data converted into digital data, a plurality of additional data accompanying the audio data, and a plurality of management data for managing the recorded data are changed. When rewriting, all the data in the first memory block including the data to be changed are rewritten to the second memory block by the CPU 105 as the rewriting means, including the data whose contents are not changed. Similarly, the first
The data in the third memory block in which the address data of the memory block is recorded is changed to the address data of the second memory block, and the contents of all the data in the third memory block are not changed. It is rewritten in the 4th memory block including it.

Each of the above-mentioned five types of data groups will be described in detail below.

FIG. 6 is a diagram showing the structure of the current position block. In the figure, at the block head 201, an identification code "FAH" indicating the current position block is recorded as 1-byte data. In 202, the entire data block number is recorded as 2-byte data. In 203, the currently selected file number is recorded as 1-byte data. In 204 to 206, the current position information of the last recorded and reproduced audio data is recorded for each file. The breakdown of the position information of the audio data for each file is related to the audio data position (211) consisting of a block number of 2 bytes and a frame number of 1 byte from the block head, that is, a total of 3 bytes, and the time from the file head (212). 3-byte information and the number of blocks from the beginning of the file (2
It consists of 2 bytes of information regarding 13). 10 here
Although the number of files is used, if the number of files is increased, the memory for the files may be used. If the current position is moved to the beginning or end of the file each time a file is selected, only one piece of current position information is required regardless of the number of files.

Reference numeral 207 is 1-byte data indicating the current operation mode of this device, which is normally in the unwritten state,
That is, it is "FFH", but at the start of recording, data of "10H" to "13H" is recorded according to the recording mode. At the start of erasing, “20
Audio data of "H" to "22H" is recorded. Remaining 93
Do not use 9 bytes.

The current position block is sequentially recorded in blocks 0 to 7 each time recording, erasing, reproducing, fast-forwarding and fast-reversing are performed. This is shown in FIGS. 12 (a) to 12 (d). Initially, voice data is recorded in the block 0 (FIG. 12A). When rewriting the current position block, the block 1 is first rewritten with new data and then "00H" is recorded in the first byte of the block 0 (FIG. 12A). 12
(B)). Therefore, when reading the voice data, the position of the current position block can be known by reading the data of the first byte of blocks 0 to 7.

The state recorded in block 3 (see FIG. 12)
When rewriting the audio data from (c)), new data is recorded in the block 4 and then the blocks 0 to 3 are erased (FIG. 12 (d)). The purpose of erasing after rewriting is to prevent the current position information from becoming inaccurate when an abnormality occurs during erasing.

If the block 7 is rewritten in the following order, the process returns to the block 0 for recording and the blocks 4 to 7 are erased. Here, audio data is recorded in order from block 0 to block 7. This is because the size of the erase block is four blocks. If the size of the erase block is different, change the block range to be recorded. I don't care. When the size of the erase block is one block or less than one block, the blocks 0 and 1 may be recorded alternately. Further, since the current position data is about 100 bytes, one block may be divided into small blocks of, for example, 128 bytes, and the divided small blocks may be sequentially recorded.

FIG. 7 is a diagram showing the structure of the entire data block. An identification code "FBH" for the entire data block is recorded in the block head 221 as 1-byte data. Reference numeral 222 denotes an area for recording the block number to be recorded next. Here, for four types of blocks except the current position block, C as a data recording means is used.
Since the PU 105 sequentially records in blocks 8 to 2047 without fixing the address, the number of the blank block to be recorded next is recorded in the area 222. However, in this case, the data is recorded in the second block unit different from the recording unit (first block unit) when the audio signal is converted into digital data and stored in the solid-state memory 110.

The area 223 is used for calculating the remaining recordable time by the number of blank blocks. The area 224 is the number of files used by the system and is used for calculating the memory capacity of the current position data, management data, and additional data.
Here, the number of files is fixed at 10. However, when the number of files is increased, the number of files is recorded in the area 224, and the current position data for each file described above and the management data and additional data for each file described below are stored in the file. Record as many as.

Reference numeral 225 is an area for recording a block number of an access table block which will be described later. Since a memory of 2 Mbytes is used here, eight access table blocks are required. Since the block number is 2 bytes per block, 16 bytes are used for 8 blocks. Reference numerals 227 to 229 are areas for recording management data for each file, and each file has 15 bytes, and here 10 files for 150 bytes are used. This management data consists of 2 bytes of information regarding the audio data block number (231) at the beginning of the file and the audio data block number (2
32), 2 bytes of information about the number of audio data blocks used by the file (233), 3 bytes of recorded time per file (234), and the last recorded file. It is composed of 6-byte information regarding the recording date and time (235) when the recording is finished. The recording date and time (235) may be the date and time when the recording was last started, or the date and time when the recording was first started or ended. Also, the file management data for unrecorded files is blank ("FF
H ″). The entire data block is rewritten each time recording / erasing is performed.

FIG. 8 is a diagram showing the structure of the additional data block. An additional data block identification code “FCH” is recorded as 1-byte data in the block head 241. Reference numeral 242 is an area for recording additional data on the entire memory, and reference numerals 243 to 245 are areas for recording additional data for each file, which are provided for files.
As shown in FIG. 8, the total additional data includes 4 bytes of information regarding the manufacturer format code (251), 2 bytes of information regarding the memory capacity (252), 1 byte of information regarding the additional data capacity (253), and various types. Flag (2
54) 2-byte information and password (255)
4-byte information about memory and memory title (256)
16 bytes of information and blank memory (25
7) and.

Of these, the manufacturer format code (251)
Is composed of a maker code of this device, a format code of audio data, a memory format code, a system code, etc., and is used for memory compatibility and future version upgrade. As the memory capacity (252), the capacity of the memory used is recorded in units of 1 Mbyte. Since 2 Mbytes of memory is used here, "2" is recorded. The value of the memory capacity (252) does not have to match the actual memory capacity. When a part of the actual memory capacity is used and the other part is used for another purpose, one memory may be divided and virtually used for a plurality of memories. In that case, the present embodiment is applied to a part or each divided part.

In the area of the additional data capacity (253), the total additional data (242) and the file additional data (243)
.. to 245) are recorded. Since each uses a memory of 64 bytes, "40
H ″ is recorded, but the total additional data has a capacity obtained by subtracting 1 byte of the identification code (241).
Is various flags related to the entire memory, and includes an erase prohibition flag, a recording prohibition flag, a reproduction prohibition flag, etc. of the entire memory. The recitation number (255) is a recitation number for permitting reproduction when the reproduction prohibition flag described above is set, and is automatically created and notified to the operator when an operation input by the operator or reproduction prohibition is set. In the memory title (256), the contents of the entire memory, memory reference number, etc. are ASCII code 1
6 bytes are recorded. The recording is performed by the operation input of the operator.

FIG. 9 is a diagram showing the structure of file additional data (243 to 245 in FIG. 8) in the additional data block, which is 2-byte information on various flags (261),
4-byte information about the code number (262), 16-byte information about the file title (263), 16-byte information about the recorder name (264), 16-byte information about the destination name (265), and a blank And a memory (266).

Of these, the various flags (261) include an erasure prohibition flag, a recording prohibition flag, a reproduction prohibition flag, a priority flag, etc. for each file. For files with the erasure prohibition flag set, erasure of audio data and additional data is prohibited, and for files with the recording prohibition flag set, audio recording is prohibited. Further, in a file for which a reproduction prohibition flag is set, reproduction is prohibited unless a later-described password is input. The priority flag is a flag that indicates the priority of the file to the person who plays it back. Although only the presence or absence of priority is recorded here, the priority may be set by numerical data and recorded.

The recitation number (262) is a recitation number for permitting reproduction when the reproduction prohibition flag described above is set, and is set on the device side at the time of operator input, reproduction prohibition setting, or recording end. It is also possible to automatically create and notify the operator.

The file title (263) is title data or reference number relating to the audio data content of each file, the recorder name (264) is the name or department name of the person who recorded, and the destination name (265) is Record the name of the person who wants to reproduce the voice data and turn it into a sentence, or the destination name to which the sentence in which the voice data is turned is sent. Here, the file title (263) and the recorder name (26
Each of 4) and the destination name (265) is recorded as an ASCII code character by character by the operation input of the recorder.

Although the file title is recorded in the area 263, the recorder name is recorded in the area 264, and the destination name is recorded in the area 265, they may be used for other purposes. For example, if there is a sentence or property related to the voice content, the document or property content may be recorded. Here, when the audio file is erased for each file, the corresponding file additional data (243 to 245 in FIG. 8) is erased to make the blank “FFH”.

The additional data block in FIG. 8 is rewritten every time the additional data is changed.

FIG. 10 is a diagram showing the structure of the access table block. In the access table, data that manages the use status of blocks and the connection order of audio data blocks is recorded. Here, 1 block = 4 per 1 Kbyte
Since the management data of bytes is used for management, the memory of 256 blocks can be managed by the management data of 1024 (1K) bytes as shown in FIG. That is, the access table 1 has blocks 0 to 255.
The access table 2 has blocks 256 to 5
11 will be managed. Therefore, since 2048 blocks of data are managed, an access table composed of 2048 ÷ 256 = 8 blocks of management data is required.

The following data is recorded as the above-mentioned 4-byte management data. That is, if the managed block is an erased blank block, 4
“FFFF_FFFFH” as byte management data
Is recorded and is set to a non-recorded state. When it is being used as a data block other than the audio data block, "F0F"
F_FFFFH ”is recorded. When used as an audio data block, the recorded audio data block number 2 bytes before the corresponding audio data block and the next recorded audio data block number 2 bytes are recorded according to the recording order. If the corresponding audio data block is the audio data block at the beginning of the file or the audio data block at the end of the file, “FFFF is used instead of the previous audio data block number or the next audio data block number.
H "is recorded.

FIG. 11 is a diagram showing the structure of an audio data block. The audio data block identification code "FDH" is recorded as 1-byte data in the block head 281.
From the next block 282, audio data is recorded as frame data in units of one frame. One frame is composed of 24 bytes of data in the high sound quality mode and 12 bytes of data in the low sound quality mode. High-quality sound or low-quality sound is identified by a flag in the audio data. In the second byte (block 284) from the end of the audio data block, the file number from the block head of the frame in which the I mark is recorded is recorded. What is an I mark?
A signal that is added to the audio data being recorded from 3
By recording the mark, it is possible to search and reproduce when reproducing. Here, one I mark can be recorded for one audio block. For the voice block in which the I mark is not recorded, I in block 284
Blank data “FFH” is recorded as the mark data.

When I mark recording is performed after the recording is completed, the frame number is recorded and the I mark recording is performed only when the I mark data of the audio data block including the audio frame at the current position is "FFH". To do. In the block in which the I mark is already recorded, the I mark is not recorded even if the frame number is different. Although only the I mark is recorded here, other signals may be recorded. For example, an S mark signal indicating the importance of voice data and a signal indicating the beginning and end of the table-of-contents voice data are recorded in the table-of-contents recording. In that case, take a memory capacity for each signal or record the signal type and frame number.
One type of data may be recorded for each block. In addition, the final block (28
In 5), the number of frames recorded in the audio data block is recorded.

The voice data block is recorded at the time of recording and erased at the time of erasing. Further, when recording starts in the middle of the file or ends in the middle of the file, the audio data in the audio data block that started or ended recording is rewritten into a new audio data block in frame units.

FIG. 13 is a flow chart for explaining the recording operation according to this embodiment. After the start of recording, first, in step S401, the current position data and the operation mode data in the current position block are changed and rewritten. Here, there are four recording modes. In other words, overwrite recording mode in which recorded audio data is erased while recording, insert recording mode in which recording is performed at the current position, table recording mode in which recording is performed at the beginning of the current file, and end of file It is an additional recording mode in which recording is performed in addition to. Of these, the current position is not changed in the overwrite recording mode and the insertion recording mode, so only the information regarding the operation mode (207) shown in FIG. 6 is recorded. Since the operation mode data before recording starts is blank data,
In overwrite recording mode and insert recording mode, it is not necessary to rewrite the entire current position block. Current position data in contents recording mode and additional recording mode (211 to 213 in FIG. 6)
Is changed to the memory address at the beginning or end of the file, and the current position block is rewritten together with the operation mode data. In step S401, the memory address at which recording is started is stored in the CPU 105.

Next, in the memory transfer step of S402, the audio data is transferred and recorded in the solid-state memory 110 only in the overwrite recording mode and the insert recording mode. That is, in the audio data block including the current position, the audio data from the audio frame at the beginning of the block to the audio frame at the current position is transferred and recorded in the blank block to be recorded next. Here, if the additional data (284 in FIG. 11) that is recorded at the same time as the audio data such as the I mark signal is the data added to the transfer data, it is also transferred and recorded.

In the case of the table-of-contents recording mode, the current position is always set at the beginning of the audio data block, so that it is not necessary to transfer it. In the case of additional recording, it is set at the end of the file, so the memory after the current position should be blank. Therefore, the block number to be recorded next is changed to the block number at the current position and additionally recorded at the block at the current position. Here, even in the overwrite recording mode or the insert recording mode, it is not necessary to transfer the audio data when the current position is the block start or block end or the file end.

In the steps after S403, the voice signal is recorded. First, in the one-frame encoding step of step S403, the audio signal is encoded frame by frame as described above and converted into digital data. Then S4
In the step of recording 1 frame of 04, the encoded audio data is recorded in a blank block to be recorded next frame by frame in order from the block head. At this time, if an additional signal such as an I-mark signal that is directly added to the audio data is input, it is recorded together with the audio block being recorded.

Next, in step S405, it is determined whether or not one block of audio data has been recorded, and if it has been stored, the flow advances to step S406 to record the access table. That is, the table data (FIG. 10) of the access data block corresponding to the recorded audio data block number is recorded. Here, the recorded audio data block number is recorded in the next audio data block number data (second half 2 bytes) of the access table data of the audio data block before the recorded audio data block, and the recording is completed. The previous audio data block number is recorded in the previous audio data block number data (first 2 bytes) of the access table data of the audio data block. Normally, the access table data remains blank because it is recorded in a blank block, but since the memory transfer was performed immediately after the start of recording, the next audio data block number of the access table data of the previous audio data block If is already recorded, rewrite it collectively after recording.

After recording the connection order of the audio data blocks in the access table block, step S4 is performed.
In step 07, a blank block for recording audio data is detected next. This detects a block number closest to the audio data block number for which recording has been completed in the access table data in the memory address order and the access table data is blank (FFFF_FFFFH). The detected blank block number is stored in the CPU 105, and the next audio data is recorded in the detected blank block.

Next, in step S408, it is determined whether or not the overwrite recording mode is set. If the overwrite recording mode is selected, the process advances to the erase position updating step of S409 to update the erase data position by one frame. That is, in the overwrite recording mode, since old audio data is erased one frame each time audio data is recorded one frame at a time, it is necessary to update the old audio data memory location one frame at a time and store it in the CPU 105. It is not necessary to update the old audio data when it reaches the end of the file and disappears. Since the memory used here is a memory of a method of erasing in block units, actual erasing is not performed until the capacity of the audio data to be erased reaches one block in the determination of step S410. If the voice data to be erased for one block in step S410 is one block of voice data in step S411, the table data of the access table block corresponding to the voice data block number erased in the step of erasing the access table in S412 Erase. At this time, the table data may be changed to blank data and the access table block may be rewritten to a new blank block.
Alternatively, the access table block may be rewritten by blanking it out to 0000H, collecting it after recording, and changing it to blank data.

If the erase block size of the solid-state memory 110 is larger than one block, step S410.
The judgment is suspended until the erase block break is reached.
When the erasure block division is reached, erasure is executed in erase block units. At this time, if an unerased voice data block is included in the same erase block, the unerased voice data block is recorded in a new blank block and the access table block is rewritten. When the size of the erase block is less than or equal to one block, it is determined for each block and erase is executed.

Next, in step S413, recording is continued until the operator performs a recording end operation, or the recorded audio data capacity reaches a predetermined amount, or the number of remaining blank blocks that can be recorded falls below a predetermined value. .

When the recording is completed, the process proceeds to the memory transfer step of S414, and the memory transfer is performed only in the overwrite recording mode and the insert recording mode. In the overwrite recording mode, the voice data block including the erased voice data position at the end of recording, the voice data that is not erased after the erased voice data position is transferred and recorded following the recorded voice data. If there is no erased voice data position or the beginning or end of the block, or if there is no voice data that has reached the end of the file and is not erased, transfer is not necessary.

Further, in the insertion recording mode, the audio data after the audio data memory position where the recording is started is transferred and recorded subsequent to the audio data whose recording is ended for the audio data block where the recording is started. If the audio data memory location where recording is started is the beginning or end of the audio block, transfer is not necessary.

Next, in the block erasing step of S415, when an unnecessary voice data block is generated by the memory transfer in step S414, or a voice data block which is erase-pending in the overwrite recording mode remains. Block is erased, or the access table block is rewritten during recording so that an unnecessary access table block remains. If the size of the erase block is larger than one block and there is a block that is not erased in the same erase block, the block data that is not erased is transferred to a new blank block and recorded.

In the step of recording the access table in S416, the access table data which could not be changed due to the recording stop is changed and the access table block is rewritten. Only the access table block in which the data is changed is rewritten, and the access table block in which the data is not changed need not be rewritten. In addition, step S41
In 6, the access table data corresponding to the old access table block number and the old whole data block number to be rewritten in the next step S417 is erased, and the access table data of the new blank block number to be rewritten next is rewritten.

In the step of recording the entire data block in S417, the management data of the file for which recording has been completed and the management data of the entire memory are changed to rewrite the entire data block. If the erase block is larger than one block, it is preferable that the same erase block does not include an audio data block, but if it does, the block that is not erased is transferred and recorded in a new blank block to rewrite the access table block. .

Finally, in the current position block recording step of S418, the current position data and the operation mode data are changed, the current position block is rewritten in the predetermined area of the memory as described above, and the recording is ended.

FIG. 14 is a flow chart for explaining the recording operation of additional data. The operation input unit 11 described above
When the additional data is changed by the operator from 3,
First, the additional data block is rewritten in the step of recording the additional data block in S421. Next, in the step of recording the access table data block in S422,
The access table data corresponding to the erased old additional data block number, the old access table block number, and the access table number corresponding to the old entire data block number are erased to rewrite the access table block. Next, in the step of recording the entire data block in S423, the new additional data block number data and the new access table block number data which have been rewritten are changed to rewrite the entire data block number. Finally, in the step of recording the current position block in S424, the new position is changed to the new whole data block number data which has been rewritten, and the current position block is rewritten and the process is terminated.

FIG. 15 shows that when the power of this device is turned on,
3 is a flowchart showing an initial process when a system reset is applied or when the solid-state memory 110 is connected to the main body. First, in step S431, the block at the current position is detected. As described above, this reads the data of the block head byte within a predetermined area from the memory head and detects the block in which the current position block identification code "FAH" is recorded. If the current position block is detected in the next step S432, the process proceeds to the display step of S433 to transfer the data of the current position block to the CPU1.
Then, the file data of the current position and the position data from the beginning of the file are displayed on the liquid crystal display unit (LCD) 112. Further, the whole data block data is read based on the whole data block number data and the recording time for each file is displayed. Further, the additional data block data is read based on the additional data block number data and the additional data for the entire memory or for each file is displayed.

On the other hand, if the current position block is not detected in step S432, the process proceeds to step S434 for erasing all memory, and the entire memory is once erased to display that all files are unrecorded. In this case, the display of additional data is reset (blank data). If the current position block is not detected, no data is recorded until the next recording (or recording of additional data). The next time recording is performed, all data will be reset and recorded. The data blocks other than the current position block are sequentially recorded from the memory head of the region excluding the memory predetermined region (here, memory block numbers 0 to 7) in which the current position block is recorded.

In this embodiment, when the current position block is not detected, the memory is completely erased and recording is restarted from the beginning. However, an alarm or a liquid crystal display is used to notify the operator of the memory abnormality and use. You may not be able to do this. In that case, the recording can be performed by the operator again performing the operation of erasing the entire memory.

FIG. 16 is a flow chart for explaining the operation during reproduction. At the time of reproduction, first, in the step of reading one frame in step S441, audio data is read from the solid-state memory 110 frame by frame from the current memory position. Next, in S442, the audio data for one frame is decoded and output as audio. Next, in step S443, 1
Judge whether the audio data for the block has been read,
If read, the process proceeds to the access table read step of S444, the access table data of the access table block corresponding to the read audio data block number is read, and the next audio data block number is stored in the CPU 105.

Next, in step S445, it is determined whether or not the operator has performed an audio file selection operation during reproduction, and if so, the process proceeds to the step S446 for recording the current position block, and the current audio file Change the position data and rewrite the current position block. At the same time, the current position data of the newly selected audio file is read from the current position block and displayed. Then S44
In the step of reading the whole data block of 7,
The management data of the newly selected audio file is read from the entire data block, and in the additional data block reading step of S448, the additional data is read from the additional data block and the liquid crystal display (LCD) 11
2 is displayed. The reproduction is continued from the current position of the new file read in step S446. When there is no voice data in the selected file when the operator selects the file in step S445, the voice reproduction is ended, or the file without voice data is not selected and only the file with voice data can be selected. You can

Next, in step S449, when the operator performs a reproduction end operation or when the end of the audio file currently being reproduced is reached, the process proceeds to the step S450 of recording the current position block, and the current position of the current position block is reached. The data is rewritten to the position where the reproduction is completed, and the reproduction operation is completed.

In the present embodiment, the current position data is rewritten after the reproduction is finished. However, in consideration of the case where the solid-state memory is separated from the main body during reproduction, during reproduction, every predetermined time or a predetermined amount of audio data is read out. It may be rewritten every time. Then, when the solid-state memory is connected next time, it is possible to reproduce from the position immediately before the disconnection.

FIG. 17 is a flow chart for explaining the erase operation.

When the erasing range is determined by the erasing operation, first in the step of recording the current position block in S461, the erasing mode data is recorded in the operation mode data of the current position block to rewrite the current position block.
Next, in the memory transfer step of S462, with respect to the audio data block including the audio data to be erased, the audio data from the block head to immediately before the erase start position is transferred and recorded in a new blank block. However, if the erasing start position is the beginning or end of the audio block, it is not necessary to transfer. Next, in the one block erasing step of S463, the audio data blocks are erased one by one, and S
In the access table reading step of 464, the next audio data block number is read from the access table block, and the erasing is repeated until the audio data block including the erasing end position is detected in the next step S465. When the size of the erase block is larger than one block, the erase is suspended until the erase block is delimited, and the erase is performed for each erase block. If there is voice data that is not erased in the same erase block, it is transferred and recorded in a new blank block.

When the voice data block including the erase end position is reached in step S465, the process proceeds to the memory transfer step of S466, and the voice data at the end of the voice data block is stored in step S462 from the voice data immediately after the erase end position. Transfer recording is performed following the block recorded by transfer. After the transfer is completed, the voice data block including the erase end position is erased. If the transfer end position is the beginning or end of the audio data block, it is not necessary to transfer.

Next, in the access table recording step of S467, the access table data corresponding to the erased voice data block number is blanked, or
The access order of the transferred and recorded audio data block is corrected and the access table block is rewritten. When rewriting the access table data in step S467, the access table data of the access table block, the additional data block, and the whole data block to be rewritten in steps S467, S468, and S469 are changed. Next, in the step of recording the additional data block of S468, the additional data of the deleted audio file is changed to rewrite the additional data block. If the erasing mode is partial erasing and there is no need to erase additional data, or if there is no additional data from the beginning, there is no need to rewrite.

Next, in the step of recording the entire data block of S469, the erased voice file and the management data of the entire memory are changed to rewrite the entire data block.

Next, in the step of recording the current position block in S470, the operation mode is changed to blank data, and the current position is changed to the first voice data position transferred to the memory in step S466 (that is, the voice data immediately after the erase end position). Change and rewrite the current position block.

When the erasing mode is file erasing, the audio data from the beginning to the end of the file is erased, the additional data of the file to be erased is erased, and the additional data block is rewritten. The current position may be the erased file number and may be blank (no designation), or may be the beginning of the file of voice data recorded after the erased file number. Further, the specific additional data such as the recorder name and the destination name may be erased with or without erasing the file. By not erasing, it is possible to fix the purpose of use for each file.

When the erase mode is the entire erase, the blocks are erased one by one in order from the beginning of the memory, and after all the blocks are erased, the access table block / additional data block / entire data block / current position block is recorded.
When recording, recording is performed from the next blank block detected before erasing, and recording is not performed again from the beginning of the memory. If the memory IC has a function of erasing the entire memory, this may be used. If the file to be erased when the file is erased has the erase protect flag set, an alarm is displayed and the file is not erased. In the case of the entire deletion, an alarm is sounded and the files for which the deletion protection flag is not set are deleted in order.

By recording the erase mode in the operation mode data before the erase, it is possible to deal with the case where the power is turned off during the erase or the solid-state memory 110 is disconnected from the main body during the erase. That is, when the power is turned on or when the solid-state memory 110 is connected to the main body, the operation mode data is read, and if the erase mode is recorded, it is determined that the erase is in progress and the access table data of the access table block is read. , It is compared and inspected whether or not voice data is actually recorded in the memory. When the voice data in the memory is erased, the access table data for the erased voice data block is rewritten, and the other block data is also corrected and rewritten, whereby the voice processing can be performed again. Before erasing, the erasing start position and erasing end position are recorded in the current position block, and when the power is turned off during erasing or the solid-state memory 110 is disconnected from the main body during erasing, the power is turned on next. When the solid-state memory 110 is connected to the main body, the erasing may be continuously performed, or the erasing may be performed again.

As described above, in the audio recording / reproducing apparatus according to the embodiment of the present invention, the data to be recorded is classified into a plurality of groups according to the rewriting frequency, and when recording and rewriting the data, It records in the blank memory which has already been erased for each group. The address to be recorded is not fixed, regardless of the data contents recorded at that time. Also when rewriting data, the blank memory at another address is recorded and the memory in which the original data is recorded is erased. Then, the address management of the recorded memory is performed by managing the recorded addresses of the group of data having a high rewriting frequency and the group of the data having a low rewriting frequency.

Therefore, since the data to be recorded is always recorded in a block of a new address in block units, only the memory of a specific address is not frequently used but is used uniformly in the entire memory. . As a result, the life of the memory can be greatly extended.
Further, when a part of the data is rewritten, it is rewritten to a block of a new address, so that it is not necessary to store the data for a block unit at a time, and the buffer memory can be small. Further, since the data to be recorded is classified and recorded into a plurality of groups according to the rewriting frequency, it is possible to omit wasteful processing such as frequently rewriting data that does not need to be rewritten. Further, since the group of data having a high rewriting frequency manages the recorded address of the group of data having a low rewriting frequency, it is possible to manage the memory without fixing the memory address to be recorded.

Further, the technical idea of the following configuration is derived from the above-described specific embodiment, and the following effects are achieved.

(1) A plurality of audio data converted into digital data, a plurality of additional data associated with the audio data, and a plurality of management data for managing the recorded data are provided for each data according to the rewriting frequency. , A data recording means for recording data in the solid-state memory that can be rewritten in block units without fixing the memory address to be recorded for each group, and a data group with a high rewriting frequency An audio recording / reproducing apparatus comprising: a recording address management unit that manages an address recorded in a low data group.

(2) A device which converts an audio signal into digital data, records it in a rewritable solid-state memory in units of a first block, and reproduces the audio signal from the solid-state memory. , A plurality of additional data attached to the audio data, and a plurality of management data for managing the recorded data, for each data, a classification means for classifying into a data group of a plurality of groups, and a memory address to be recorded for each group And a first recording unit that records data in a second block unit that does not fix the data, and a memory group in which the data groups of the lower group are added to the data groups of the upper group to record the data. An audio recording / reproducing apparatus comprising: a second recording unit.

(2-1) Among the data groups of the plurality of groups, the data group of any one of the groups is one of the management data for managing the audio data, the additional data accompanying the audio data, or the recorded data. Either 2
The audio recording / reproducing device according to the configuration (2), which is a data group including data of at least types.

(2-2) The audio recording / reproducing apparatus according to (2), in which the first block unit and the second block unit are different.

(2-3) The audio recording / reproducing apparatus according to (2), wherein the first block unit is larger than the second block unit.

(2-4) The audio recording / reproducing apparatus according to the configuration (2), in which both the first and second block units have a size of 256 bytes or more.

(2-5) The data group of one group is composed of one or a plurality of data in the second block unit. When rewriting, only the data that needs to be rewritten is rewritten in the second block unit. The audio recording / reproducing device according to configuration (2).

(2-6) Of the data groups of a plurality of hierarchized groups, the data group of the highest hierarchical group is recorded in a predetermined area of the memory address space,
The audio recording / reproducing apparatus according to the configuration (2), in which the data groups of groups other than the data group of the highest hierarchical layer are recorded in areas other than the predetermined area.

(3) A device for converting an audio signal into digital data, recording it in a rewritable solid-state memory in block units, and reproducing the audio signal from the solid-state memory, wherein the audio data converted into digital data, A classifying unit that classifies the plurality of additional data associated with the audio data and the plurality of management data for managing the recorded data into the data groups of the first, second, third, fourth, and fifth groups. And the data group of the first group is the second,
A data group of the fifth group includes recorded memory address data; a data group of the second group includes memory address data in which the data groups of the third, fourth, and fifth groups are recorded; The data group of group 4 is the fifth
An audio recording / reproducing apparatus characterized in that the data group of the group includes recorded memory address data.

(3-1) The data group of the first group includes management data relating to the current position of recording / reproducing in the management data, and the data group of the second group includes management data relating to the entire memory. The data group of the third group includes data and management data of each audio file, the additional data of the entire memory of the additional data or the additional data of each audio file is included, and the data group of the fourth group of the additional data is The fifth group of data groups includes additional data recorded at the same time as the audio data among the audio data and the additional data, including the data for managing the memory usage status and the recording order of the blocks in which the audio data is recorded. The audio recording / reproducing apparatus according to the above configuration (3).

(3-2) The audio recording / reproducing apparatus according to (3), in which the memory addresses for recording the data groups of the first, second, third, fourth and fifth groups are not fixed.

(3-3) The data group of the first group is recorded in a predetermined area of the memory, and the data groups of the second, third, fourth and fifth groups are recorded in areas other than the predetermined area. The audio recording / reproducing device according to configuration (3).

(4) A device for converting an audio signal into digital data, recording the same in a rewritable solid-state memory in block units, and reproducing the audio signal from the solid-state memory, wherein the audio data converted into digital data , A plurality of additional data accompanying the audio data, and a plurality of management data for managing the recorded data, which includes data to be changed when the content of any one of the data is changed and rewritten. A first rewriting means for rewriting all data in one memory block, including data whose contents are not changed, into the second memory block, and a third rewriting means in which the address data of the first memory block is recorded. Change the data in the memory block to the address data of the second memory block and change all the data in the third memory block An audio recording / reproducing apparatus comprising: a second rewriting unit that rewrites data in the fourth memory block including data whose contents are not changed.

(4-1) The audio recording / reproducing apparatus according to (4), in which the memory address to be rewritten is not fixed when rewriting.

According to the audio recording / reproducing apparatus having the above-mentioned structure (1), only the memory at the specific address is not frequently used but is used uniformly in the entire memory. As a result, the life of the memory can be greatly extended.

Further, the above-mentioned configurations (2) to (2-6)
According to the audio recording / reproducing apparatus described in (1), it is not necessary to store data for a block unit at a time, and the memory capacity can be small.

Further, the above-mentioned configurations (3) to (3-3)
According to the audio recording / reproducing apparatus described in (1), it is possible to omit useless processing such as frequently rewriting data that does not need to be rewritten.

Further, the above-mentioned configurations (4) and (4-1)
According to the audio recording / reproducing apparatus described in (1), memory management becomes possible without fixing the memory address to be recorded.

[0132]

According to the first aspect of the present invention, only the memory of a specific address is not frequently used but is used uniformly in the entire memory. by this,
This has the effect of significantly extending the life of the memory.

According to the second aspect of the invention, there is an effect that it is not necessary to store data for a block unit at a time and the memory capacity can be small.

Further, according to the invention described in claim 3, there is an effect that wasteful processing such as frequently rewriting data that does not need to be rewritten can be omitted.

Further, according to the invention described in claim 4, there is an effect that the memory management becomes possible without fixing the memory address to be recorded.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a solid-state memory audio recording / reproducing apparatus to which the present invention is applied.

FIG. 2 is a diagram showing a detailed configuration of a liquid crystal display unit shown in FIG.

3 is a diagram showing a detailed configuration of an operation input unit shown in FIG.

4A is a diagram for explaining an overwrite recording mode, FIG. 4B is a diagram for explaining an insertion recording mode, and FIG. 4C is a diagram for explaining a table of contents recording mode. Yes, (d) is a diagram for explaining the additional recording mode.

FIG. 5 is a diagram showing a configuration of a solid-state memory according to the present embodiment.

FIG. 6 is a diagram showing a configuration of a current position block.

FIG. 7 is a diagram showing a structure of an entire data block.

FIG. 8 is a diagram showing a configuration of an additional data block.

FIG. 9 is a diagram showing a structure of file additional data in an additional data block.

FIG. 10 is a diagram showing a configuration of an access table block.

FIG. 11 is a diagram showing a configuration of an audio data block.

12A to 12D are views for explaining that the current position block is recorded in blocks 0 to 7 in order.

FIG. 13 is a flowchart for explaining a recording operation according to this embodiment.

FIG. 14 is a flowchart for explaining a recording operation of additional data.

FIG. 15 is a flowchart showing an initial process when the power of the device is turned on, a system reset is applied, or a solid-state memory is connected to the main body.

FIG. 16 is a flowchart for explaining a reproduction operation according to this embodiment.

FIG. 17 is a flowchart for explaining an erase operation according to this embodiment.

[Explanation of symbols]

101 ... Microphone, 102 ... Input amplifier, 103 ... A / D
(A / D converter), 104 ... Encoder, 105 ... CP
U, 106 ... Speaker, 107 ... Output amplifier, 108 ...
D / A (D / A converter), 109 ... Decoder, 110 ...
Solid-state memory, 111 ... I / F, 112 ... LCD, 113
… Operation input section.

Claims (4)

[Claims] 1. A plurality of audio data converted into digital data, a plurality of additional data accompanying the audio data, and a plurality of management data for managing the recorded data are stored in a plurality of data depending on the rewriting frequency. Classification means for classifying into groups, data recording means for recording data in the solid-state memory that can be rewritten in block units without fixing the memory address to be recorded for each group, and data groups with high rewriting frequency have low rewriting frequency An audio recording / reproducing apparatus comprising: a recording address management unit that manages an address recorded in a data group. 2. A device for converting an audio signal into digital data, recording the same in a rewritable solid-state memory in a first block unit, and reproducing the audio signal from the solid-state memory, wherein the digitized audio data, A plurality of additional data accompanying audio data and a plurality of management data for managing the recorded data are classified into data groups of a plurality of groups for each data, and a memory address to be recorded for each group. A first recording means for recording data in a second block unit which is not fixed; and a first recording means for recording the data by adding the memory address data in which the data group of the lower group is recorded to the data group of the upper group by layering the groups. An audio recording / reproducing apparatus comprising: 3. An apparatus for converting an audio signal into digital data, recording the same in a rewritable solid-state memory in block units, and reproducing the audio signal from the solid-state memory, wherein the audio data and the audio are converted into digital data. A plurality of additional data associated with the data and a plurality of management data for managing the recorded data are classified into first, second, third, fourth and fifth data groups. The data group of the first group includes memory address data in which the data groups of the second and fifth groups are recorded, and the data group of the second group includes the third, fourth and fifth groups. Data group of the fourth group includes the recorded memory address data, and the data group of the fourth group includes the memory address data of the recorded data group of the fifth group. Recording and reproducing apparatus. 4. An audio signal is converted into digital data,
A device for recording in a rewritable solid-state memory in block units and reproducing an audio signal from the solid-state memory, wherein audio data converted into digital data, a plurality of additional data accompanying audio data, and recorded data are recorded. Data that does not change the contents of all the data in the first memory block that contains the data to be changed when the contents of some of the management data for management are changed and rewritten. And a first rewriting means for rewriting to the second memory block including the above, and changing the data in the third memory block where the address data of the first memory block was recorded to the address data of the second memory block. Then, including the data that does not change the contents of all the data in the third memory block, the fourth memory block Audio recording and reproducing apparatus characterized by comprising a second rewriting means for rewriting the click, the.