JPS6222160B2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Technical Field of the Invention The present invention relates to a data relocation method in an audio data recording/reproducing device, and more specifically, to a method for converting an analog signal such as audio data into a digital signal and recording it in an audio memory. The present invention relates to a method for rearranging data on an audio memory in order to effectively use the audio memory in an audio data recording and reproducing apparatus that reproduces digital signals recorded in a memory.

(2) Background of the Invention Traditionally, analog voice recording and playback devices using magnetic tape have been the mainstream, and are used for voice responses in telephone exchanges, telephone number change notifications, etc.
Many of the announcement machines used for weather forecasts, traffic information, etc. were analog systems that used endless tape. If you wish to change the message recorded on this analog announcement machine, you will need to temporarily suspend the service of the announcement machine and either re-record the contents of the endless tape or replace it with a different endless tape that has already been recorded. This was an inconvenience. Another drawback was that the mechanical system for rotating the endless tape was difficult to maintain.

Today, in order to improve maintainability, announcement machines without rotating parts are replacing conventional analog announcement machines. This non-rotating recording device records audio in the form of a digital signal after A/D conversion, and uses a semiconductor memory or the like as a recording medium. Digital recording requires a large amount of memory capacity to maintain a certain level of audio quality, and effective use of memory is important in order to record a large number of messages. In order to use memory effectively, an announcement machine must be able to record multiple messages consecutively in the memory area, and use time-sharing memory access technology to record different messages on multiple external devices. It is essential that they can be supplied simultaneously in a time-division manner.

(3) Prior Art and Problems When changing the contents of a message recorded in memory, the length of the message after the change may be different from the length before the change. If the message length after the change is shorter than the message length before the change, overwriting the memory area of the message before the change will create a surplus in the area. If the message length after the change is longer than the message length before the change, the area for the message before the change becomes blank by writing in a blank area that is wide enough to accommodate the message after the change. If there is not enough area to write the changed message, writing is not possible as is, and you must create an area in which the changed message can be written by merging small blank areas.

In the conventional method, when creating an area where a modified message can be written, the announcement service of the announcement machine is temporarily stopped, the messages in the memory that need to be edited are temporarily deleted, and the messages are re-entered one after another. The small blank area was merged into the large blank area, thereby securing a writing area for the changed message.

However, in this conventional method, the announcement service for all messages had to be temporarily stopped in order to re-edit the memory, which caused a problem in that the service deteriorated.

(4) Purpose of the Invention In view of the problems in the conventional method described above, the purpose of the present invention is to provide a digital audio data recording/reproducing device that reads out and/or reads each message in a time-sharing manner.
Apart from the time slot assigned to each message for writing, there is a first time slot assigned for reading one message, and a first time slot assigned for writing the read message into a free area. Based on the concept of creating a second time period that is continuous with the first time period allocated to To provide a data relocation method that collects used areas to create one large unused area and makes it possible to effectively utilize memory to handle new message recording.

(5) Structure of the invention The gist of the present invention to achieve the above object is as follows:
A non-rotating voice memory for recording voice data including a plurality of messages with different contents in a digital format, and reading the message from the voice memory or writing a new message to the voice memory for each of the messages. In an audio data recording and reproducing apparatus equipped with a control unit that allocates one time slot to perform time-sharing, the first additional time slot and the first additional time slot are separated from each of the time slots. a second additional time period that is continuous to the first additional time period, and the control section causes the desired one of the messages recorded in the voice memory to be read out in the first additional time period. , a data relocation method characterized in that a message read out in the first additional time period is rewritten in a desired memory area of the voice memory in the second additional time period. be.

(6) Examples of the invention Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block circuit diagram showing an embodiment of an audio data recording and reproducing apparatus for implementing the data relocation method according to the present invention. In the figure, 1 is an A/D that converts analog voice data A containing multiple messages with different contents into a digital signal D.
A converter, 2, receives the digital signal D via an OR gate 3, and an audio memory, 4, records this.
5 is a control unit that records each of the messages included in the digital signal D in the voice memory in a time-division manner or reads out the recorded messages in a time-division manner; The buffer register 6 is a distribution unit that sends the messages stored in the buffer register 5 to a corresponding external device, such as a talkie trunk in an exchange.

According to the invention, the output of buffer register 5 is connected via data line 7 to the input of OR gate 3.

The control unit 4 has a message number counter 4-1.
, control memory 4-2, and adder 4-3
It is equipped with If all messages recorded or to be recorded in the voice memory 2 are from #0 to #n, the message number counter 4
-1 is a self-running cyclic counter that cyclically outputs values from "0" to "n+2". The control memory 4-2 stores message addresses corresponding to each message number, outputs a message address MA in response to the output of the message number counter 4-1, and accesses the voice memory 2 with the message address. and voice memory 2
Data is written to or read from the audio memory 2. control memory 4
-2 outputs one message address MA, and after one word of the corresponding message is read or written, the adder 4-3 adds 1 to the message address in the control memory 4-2. Prepare for next read or write.

FIG. 2 is a time chart for explaining the operation of the apparatus shown in FIG. First, the message read operation will be explained with reference to FIGS. 1 and 2. Message number counter 4-1 indicates the message number
For example, when the MN outputs a count value "2", the message address MA corresponding to message #2 is read out from the control memory 4-2, and when this message address is given to the voice memory 2, the message address MA corresponding to message #2 is read out from the control memory 4-2. A word worth of data is read into the buffer register 5, and this data is sent to the distribution section 6 and sent to the opposing device designated by the message number MN, which is #2 in this example. Next, the adder 4-3 adds 1 to the message address corresponding to message #2 in the control memory 4-2 to update the message address, and reads out one word of message #2 in the next round. Be prepared for. Then, the message number counter 4-1 outputs a count value of "3". When message #3 is to be read, the same operation as that for message #2 is performed. Thereafter, messages #4 to #n are read out in the same manner.

Next, the write operation will be explained. For example, when message #3 is to be written, a value corresponding to the written message number, in this example "3", is input to the message number counter 4-1, and the count value of the message number counter 4-1 reaches "3". Then, the output of the message number counter 4-1 is A/
The data is input to the D converter 1 and a write instruction is given. Then, the A/D converter digitizes the input analog voice data of message #3 and inputs it into the voice memory 2. On the other hand, the message address corresponding to message #3 is read from the control memory 4-2 in the same way as when reading, and a write pulse WP is applied to the voice memory 2, thereby specifying one word of message #3. is written to the specified address. In message number 3 in the next cycle of message number counter 4-1, the next one word of message #3 is written to the address next to the address that has already been written.

By the way, in the present invention, a data line 7 for returning the output of the buffer register 5 to the audio memory 2 is newly provided, and after the time period for processing the final message #n, two messages #(n+1) and #(n+2 )
First and second additional time periods were provided to process the audio data to allow rearrangement of the audio data in the audio memory. Hereinafter, an embodiment of the operation of rearranging audio data in the audio memory will be described with reference to FIGS. 3 and 4.

Figure 3 is a table showing the relationship between message numbers and message addresses, Figure 4a is a diagram showing the state of the voice memory before rearrangement, and Figure 4b is a diagram showing the state of the voice memory after rearrangement. be. In this embodiment, the final message #n is message #6, and before the data in the voice memory is rearranged, there is a small unused space between the area of message #5 and the area of message #6, as shown in FIG. 4a. area x ₀
However, by moving the data of message #6 to an area adjacent to the area of message #5, the small unused area _X0 is merged into the large unused area _X1 as shown in Figure 4b. Ru.

As shown in FIG. 3, the addresses of the unused area _X0 are from 5500 to 6499 in this example, and in the initial state, the first address 5500 is stored in advance in the control memory 4-2. Further, the start addresses of the message addresses of messages #0 to #6 are also stored in the control memory 4-2. For example, for message #6, its first address 6500 is control memory 4-2.
is stored in. The data of messages #0 to #6 are stored in the area of the corresponding message address in the voice memory 2. For example, message #6 starts from address 6500 in voice memory 2.
It is stored in area 7499.

First, message number counter 4-1 (first
When the output of (Fig.) reaches "7", which is the next number after message number "6", in the first cycle of operation,
The first address 6500 of message #6 stored in the control memory 4-2 is read out and the voice memory 2 is accessed, and one word of the first voice data of message #6 is read out from the voice memory 2 and marked. It is held in the file register 5. In this case, since the distribution section 6 is prohibited from operating upon receiving the message number "7", the data held in the buffer register 5 is not distributed. Thereafter, the message address of message #6 is updated to 6501 by the operation of adder 4-3. Next, when the output of the message number counter 4-1 reaches "8", the first address ₅₅₀₀ of the small unused area Message #6 held in buffer register 5
One word of the first data is connected to data line 7 and
It is written to the designated address 5500 of the audio memory 2 via the OR gate 3. After this, the unused area stored in control memory 4-2
Address 5500 of X ₀ is obtained by the operation of adder 4-3.
Updated to 5501. In this way, data for one word of message #6 is rearranged. Similarly, in the time period for message numbers "7" and "8" in the next cycle of the message number counter 4-1, data for one word next to message #6 is rearranged, and the same operation follows. By repeating this, all data of message #6 is rearranged.

The present invention is not limited to the above-described embodiments, and the number of messages and the length of each message may be arbitrary, and even if unused areas are scattered, adjacent to the unused areas. By sequentially moving the data of the messages that are sent, it is possible to merge scattered unused areas into one large unused area. Furthermore, the present invention is not only applicable to recording and reproducing messages;
Needless to say, this also applies to the recording and playback of sounds other than real voices.

(7) Effects of the invention As is clear from the above explanation, according to the present invention, by adding a small amount of hardware and allocating an extra time slot for two message numbers, data in the voice memory can be freely used. Therefore, by using this function, you can freely edit the message area in use and the unused area on the voice memory, so you can use the voice memory to its full capacity without wasting it. In addition, in order to edit the contents of the voice memory, there is no need to stop the message playback service and re-record the entire contents, so there are many advantages such as improved service in the announcement machine and improved maintainability of the announcement machine. occurs.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing an embodiment of an audio data recording/reproducing device for implementing the data relocation method according to the present invention, and FIG. 2 is a time chart for explaining the operation of the device shown in FIG. , FIG. 3 is a table showing the relationship between message numbers and message addresses, and FIG. 4 is a diagram showing the state of the voice memory before and after message data is rearranged. 1...A/D converter, 2...audio memory, 3...
...OR gate, 4...control section, 6...distribution section, 7
...Data line, #0 to #n...Message.

Claims (1)

[Claims] 1. A non-rotating voice memory that records voice data including a plurality of messages with different contents in a digital format, and a method for reading a message from the voice memory or writing a new message to the voice memory for each of the messages. In the audio data recording and reproducing apparatus, the audio data recording and reproducing apparatus includes a control unit that allocates one time slot to perform time-sharing processing, in which a first additional time slot is provided separately from each of the time slots;
A second additional time period is provided that is continuous with the first additional time period, and the control unit is configured to perform a desired one of the messages recorded in the audio memory in the first additional time period. and the message read out in the first additional time period is rewritten in a desired memory area of the voice memory in the second additional time period. Data relocation method.