JP2002223296A - Key telephone device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a key telephone device in which conditions and system for recoding a message can be set easily. SOLUTION: The key telephone comprises a main unit 1, an extension telephone 3, and a voice storage unit 7. The voice storage unit 7 comprises a control section 8, a voice encoding section 9, a decoding section 10, a message data base 11, an erasure message data base 12, a code conversion conditions storing section 13, a control command buffer 14, and a command monitoring section 15 wherein voice information transmitted from the main unit 1 is converted into digital encoded data and stored in the message data base 11. When a command from the main unit 1 satisfies conditions held in the code conversion conditions storing section 13, encoding system of a message stored in the message data base 11 is converted in response to a designation from the command monitoring section 1 and stored in the deleted message data base 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key telephone apparatus having a voice storage function.

[0002]

2. Description of the Related Art A key telephone device includes one or more extension telephones and a main device, and is connected to a public line. The main unit is connected to an extension telephone and one or more office lines, and controls the transmission and reception of an extension telephone and an arbitrary office line, holding of the office line during a call, call transfer to another extension telephone, and the like. Is what you do. A voice storage function is added by connecting a voice storage device for recording and storing a call with an office line, a call between extension telephones, a message, and the like to the main device.

FIG. 6 shows a schematic configuration of a conventional key telephone apparatus having a voice storage function. In FIG. 6, a main device 101 includes a telephone interface 102, a central office interface 104, and a central processing unit 105. One or more extension telephones 103 (only one is shown in the figure) are connected to the telephone interface 102, and the office line interface 104 is connected to a public line. The central processing unit 105 controls the telephone interface 102 and the central office interface 104 to make and receive calls between an arbitrary extension telephone 103 and an arbitrary office line, hold an office line during a call, and transfer a call to another extension telephone 103. And so on.

[0004] The voice storage device 107 is connected to the main device 101 via an interface cable 106. The interface cable 106 is connected between the main device 101 and the audio storage device 1.
07 and the control information.
The audio storage device 107 includes a control unit 108, an audio encoding unit 1
09, code restoration unit 110, message database 11
1. Includes a delete message database 112.

[0005] The voice encoding unit 109 converts the voice of the message transmitted from the main unit 101 into digitally encoded data, and is capable of encoding with a plurality of encoding methods having different compression rates. The encoded message data is stored in the message database 111.
At the time of storage, message management information such as the registration date and time of the message, the recording time, and the encoding method is added. The deletion message database 112 stores messages instructed to be deleted among the messages stored in the message database 111. The code restoration unit 110 decodes the message data extracted from the message database 111 or the deleted message database 112 and restores the original speech.
A plurality of decodings corresponding to the encoding method performed by the N.9 is possible. The control unit 108 controls transmission and reception of audio data and control information to and from the main device 101 via the interface cable 106, and also controls the audio encoding unit 109, the code restoring unit 110, the message database 111, and the deletion message database 112 Voice storage device 107 including
It controls the whole.

The deletion message database 112
Is provided to make it possible to re-listen a message that has been deleted by mistake or a message that has been listened to once and is no longer needed. In addition, the configuration for recording a message or listening to the recorded message in accordance with an instruction from the extension telephone 103 or an external line is omitted because various types of systems are well known.

Next, the operation when recording a message using the key telephone apparatus of FIG. 6 will be described. When recording a message such as a telephone call with an office line, a telephone call between extension telephones, or a message, when a predetermined condition is satisfied, for example, a predetermined operation performed from the extension telephone 103 or a public line is sent to the central processing unit 105. When notified, the central processing unit 105 transmits voice information from the extension telephone 103 or a public line to the control unit 108 via the interface cable 106. The control unit 108 controls the voice encoding unit 10
9 is operated to convert voice information into coded data and store the coded data in the message database 111 by a coding method determined in advance by user setting or the like. At this time, as shown in FIG. 7, the stored audio property information such as the message registration date and time 111a, the listened flag 111b (not listened at the time of recording), the message recording time 111c, and the encoding method 111d are set. The stored message management information and the encoded data 111e are stored in association with each other. In FIG. 7, these pieces of information are shown integrally, but may be stored separately in the database 111.

When playing back a recorded message, when a predetermined operation performed from the extension telephone 103 or the public line is notified to the central processing unit 105, the central processing unit 1
05 instructs the control unit 108 to take out the message. The control unit 108 extracts the message whose reproduction is instructed from the message database 111, and
The code restoring unit 110 is operated by a method corresponding to 0d to restore the coded data 111e into audio information. Control unit 10
8 is the interface cable 10
The central processing unit 105 transmits the voice to the extension telephone 103 or the public line to reproduce the message. When the message is reproduced, the control unit 108 changes the listened flag 111b of the message from unlisted to listened.

When the recorded message is no longer needed,
When a predetermined operation performed from the extension telephone 103 or the public line is notified to the central processing unit 105, the central processing unit 105 instructs the control unit 108 to delete the message. The control unit 108 controls the message database 111
, The message instructed to be deleted is taken out and stored in the deleted message database 112 again. At this time, there has been proposed a method in which the extracted coded data is restored by the code restoration unit 110, and the encoded data is encoded again by the audio decoding unit 109 and stored again. In this case, by re-encoding with an encoding method having a higher compression rate, the occupied capacity of the memory can be reduced. By increasing the compression rate, the quality of the reproduced sound is reduced, but it is sufficient to consider the possibility of re-listening after the deletion instruction.

[0010]

However, the conventional one re-encodes the coded voice information in accordance with each instruction, and is not always convenient. Although a message that automatically re-encodes a message that satisfies a certain condition has also been proposed, the condition is set in advance, and it is difficult to set the message in accordance with the use condition of the user.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a key telephone apparatus in which a condition for re-encoding a message and a re-encoding method can be easily set.

[0012]

According to the present invention, there is provided a key telephone apparatus having a voice storage function, comprising: a main unit connected to an extension telephone and a public line; and a main unit connected to the main unit for storing voice from the main unit. Encoding means for encoding audio by a plurality of methods having different compression rates, decoding means for restoring encoded audio data, and storing the encoded audio data. Storage means, a code conversion condition setting means, and a code conversion processing means, wherein the code conversion condition holding means holds conditions for converting the coding system of the coded audio data stored in the storage means. Wherein the code conversion processing means, when the condition is satisfied, restores the corresponding encoded audio data by the decoding means, and encodes the restored audio by different encoding by the encoding means. It is to encode in the expression. Therefore, the conditions for re-encoding the encoded voice message stored in the key telephone apparatus can be set arbitrarily and easily.

Further, in the key telephone apparatus of the present invention, the code conversion condition holding means holds instruction information from the main apparatus, for example, information for instructing deletion of the encoded voice data stored in the storage means. Things. In this case, the encoding method is converted according to the instruction from the main device, and the storage capacity can be controlled.

Further, in the key telephone apparatus of the present invention, the storage means stores voice property information such as message listening information, recording time information, and registration date and time information, and stores the voice conversion information in the code conversion condition holding means. It holds the property information of. With such a configuration, the encoding system is converted according to the state of the stored audio information, and the storage capacity can be controlled.

In the key telephone apparatus of the present invention, the encoding system information of the encoded audio data to be further stored is stored in association with the encoding system information of the encoded audio data in the code conversion condition holding means. Is further used as the conversion condition. By doing so, it is possible to perform code conversion only on data accumulated by an arbitrary coding method, and it is possible to perform conversion with higher precision.

In the key telephone apparatus according to the present invention, the code conversion condition holding means holds information for designating the converted encoding system in correspondence with the code conversion condition. In this case, the degree of compression of data can be changed according to the remaining storage capacity, and the storage capacity can be controlled with higher accuracy.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.

(First Embodiment) FIG. 1 shows a schematic structure of a key telephone apparatus according to a first embodiment of the present invention. The key telephone apparatus of FIG. 1 includes a main apparatus 1, one or more extension telephones 3 (only one is shown in the figure), and a voice storage device 7, and is connected to a public line. The main device 1 and the audio storage device 7 are connected via an interface cable 6 for transmitting audio data and control information.

The main unit 1 includes a telephone interface 2, an office line interface 4, and a central processing unit 5. The extension telephone 3 is connected to the telephone interface 2, and the office line interface 4 is connected to a public line. Is done. The central processing unit 5 controls the telephone interface 2 and the central office interface 4 to send / receive an arbitrary extension telephone 3 to / from an arbitrary office line, hold an office line during a call, and transfer a call to another extension telephone 3. And so on. Further, it controls transmission of audio data and control information to and from the audio storage device 7.

The speech storage device 7 includes a control unit 8, a speech encoding unit 9, a code restoration unit 10, a message database 11,
Deleted message database 12, code conversion condition storage unit 13, control command buffer 14, command monitoring unit 15
Specifically, it is realized mainly by a processor operated by a program, an internal memory, and a file device.

The voice coding unit 9 converts voice information such as a message transmitted from the main unit 1 into digital coded data, and can perform coding by a plurality of coding methods having different compression rates. . The encoded data is stored in the message database 11 or the deletion message database 12. At the time of storage, message storage information such as registration date and time of the message, recording time, and the like, and message management information including an encoding method are added. The deletion message database 12 stores messages for which deletion has been instructed among the messages stored in the message database 11. The code restoring unit 10 decodes the message data extracted from the message database 11 or the deleted message database 12 and restores the original speech, and a plurality of decodings corresponding to the encoding scheme performed by the speech encoding unit 9. Is possible.

The code conversion condition storage unit 13 stores a condition for converting the encoding system of the message stored in the message database 11. The control command buffer 14 stores the control command buffer 14 in the voice storage device 7. Commands for controlling each unit are buffered.
The command monitoring unit 15 monitors the control command buffer 14 and controls activation of the code conversion process.

The control unit 8 controls the transmission and reception of audio data and control information with the main unit 1 via the interface cable 6, and also controls the audio encoding unit 9, the code restoring unit 10,
It controls the entire voice storage device 7 including the message database 11, the deletion message database 12, the code conversion condition storage unit 13, the control command buffer 14, and the command monitoring unit 15. The control command for the voice storage device is executed after being received from the main device 1 and buffered in the control command buffer 14.

Next, the operation of the key telephone apparatus of FIG. 1 will be described. Calls with office lines, calls between extension phones,
The operation of recording a message such as a message is basically the same as that shown in FIG. When the message is stored in the message database 11, as shown in FIG. 2, the property information of the stored voice, such as the message registration date / time 11a, the listened flag 11b (not listened at the time of recording), the message recording time 11c, And message management information including the encoding method 11d and the encoded data 11e are stored in association with each other. As in the case of FIG. 6, the information may be stored integrally or may be stored separately.

Next, a description will be given of the operation in the case where the capacity of a predetermined message among the messages stored in the message database 11 is reduced by converting the encoding method, and stored in the deleted message database 12. The code conversion condition storage unit 13 includes a start command storage area 13a for setting a start command for performing conversion of an encoding method as shown in FIG. 3, and a pre-conversion coding method for setting an encoding method of a message to be converted. Storage area 13b, post-conversion coding scheme storage area 13c for setting a post-conversion coding scheme
Is provided, and conditions for converting the encoding method are stored in advance. In this case, the pre-conversion coding method storage area 13c
Is set at a higher compression rate than the coding method A stored in the pre-conversion coding method storage area 13b.

When the deletion of the stored message is instructed from the main unit 1, the control unit 8 buffers the deletion command in the control command buffer 14. The command monitoring unit 15 compares the buffered command with the command stored in the activation command storage area 13a,
If they do not match, it instructs the control unit 8 to execute the buffered command. If they match, the control unit 8 is instructed to start the code conversion process.

Since the buffered command matches the command in the activation command storage area 13a, the control unit 8 holds the message to be deleted by the delete command in the encoding scheme 11d and the pre-conversion scheme storage area 13b. Compare methods. If they match, the encoded data 11e is restored by the code restoring unit 10, and the encoded data is re-encoded by the voice encoding unit 9 using the method of the post-conversion method storage unit 13c. Let it.

As described above, since the necessary conversion can be performed by providing the code conversion condition storage unit, the stored message can be re-encoded under any conditions.

Various methods are known for commands for recording a message, listening to the recorded message, and instructing a message to be deleted, and a method for realizing them according to an instruction from the extension telephone 103 or an external line. Therefore, the description is omitted.

(Second Embodiment) FIG. 4 shows a schematic configuration of a key telephone apparatus according to a second embodiment of the present invention. The key telephone apparatus of FIG. 4 includes a main apparatus 1, one or a plurality of extension telephones 3 (only one is shown in the figure), and a voice storage device 70, and is connected to a public line. The key telephone apparatus of FIG. 4 is the same as the key telephone apparatus of FIG. 1 except that the configuration of the voice storage device 70 is partially different. Therefore, the different parts will be mainly described, and the common parts will be omitted.

The voice storage device 70 includes a control unit 8, a voice coding unit 9, a code restoration unit 10, and a message database 1.
1, code conversion condition storage unit 13, database monitoring unit 16
Specifically, similarly to the voice storage device 7 of FIG. 1, the processor is realized mainly by a processor operated by a program, an internal memory, and a file device.

The speech encoding unit 9, the code restoration unit 10, and the message database 11 are the same as those included in the speech storage device 7 of FIG. The code conversion condition storage unit 13 stores a condition for converting the encoding method of the message stored in the message database 11, and sets the encoding method of the message to be converted as shown in FIG. Pre-conversion coding method storage area 1
3b, a post-conversion coding method storage area 13c for setting a post-conversion coding method, a monitoring target data storage area 13d, and a monitoring content storage area 13e. The information held in the monitoring target data storage area 13d indicates which information of the property of the stored audio is to be monitored, and the information held in the conversion condition storage unit 13e indicates which property information to monitor It is stored whether or not to activate the code conversion operation when such a value is reached. The database monitoring unit 16 is started at regular intervals and monitors the message database 11. The control unit 8 is the same as that of FIG.
It controls the transmission and reception of audio data and control information to and from the main device 1 via the interface cable 6 and controls the entire audio storage device 7.

Next, the operation of the key telephone apparatus of FIG. 4 will be described. Calls with office lines, calls between extension phones,
The operation of recording a message such as a message and the operation of storing the message in the message database 11 are basically the same as those in FIG.

When the main device 1 instructs to listen to the message stored in the message database 11,
The control unit 8 controls the code restoration unit 10 to encode the encoded data 11e.
Is restored to audio data and sent to the main device 1 via the interface cable 6, and at the same time, the listened flag 11b of the message is changed from unlisted to listened.

The database monitoring unit 16 is started at regular intervals, and searches for information (listening completed flag in the example of FIG. 5) held in the monitoring target data storage area 13d of the code conversion condition storage unit 13. Then, the monitoring content storage area 13
e, if there is a message that matches the content held in this case (in this case, already listened), the encoding method 1 of that message
1d is compared with the method stored in the pre-conversion method storage unit 13b. If they match, the control unit 8 sets the code restoration unit 1
The coded data 11e is restored to voice data by using 0, and the voice data is further coded by the voice coding unit 9 using the coding method held in the converted format storage unit 13c, and stored in the message database 11 again.

As described above, the properties of the stored speech are set as the conditions held in the transcoding condition storage unit 13 and the message database 11 is periodically monitored by the database monitoring unit 16. When the property is set, it can be re-encoded. In the above example, the listened flag 11b of the message is set as the monitoring property.
If "recording time" is held in the monitoring target data storage area 13d and "60 minutes or more" is set in the monitoring content storage area 13e, a message of 60 minutes or more is re-encoded and stored by the same processing. be able to. Similarly, the same processing can be performed when the “registration date and time” is held.

[0037]

As is apparent from the above description, according to the present invention, it is possible to easily set the conditions for re-encoding the encoded voice message stored in the key telephone apparatus and the re-encoding method. it can.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a key telephone device according to a first embodiment;

FIG. 2 is a schematic diagram showing a configuration of a message in the message database of FIG. 1;

FIG. 3 is a schematic diagram showing a configuration of a code conversion condition storage unit in FIG. 1;

FIG. 4 is a diagram illustrating a schematic configuration of a key telephone device according to a second embodiment;

FIG. 5 is a schematic diagram showing a configuration of a code conversion condition storage unit in FIG. 4;

FIG. 6 is a diagram showing a schematic configuration of a conventional key telephone device having a voice storage function.

FIG. 7 is a schematic diagram showing a configuration of a message in the message database of FIG. 6;

[Explanation of symbols]

 1, 101: Main unit 2, 102: Telephone interface 3, 103: Extension telephone 4, 104: Central line interface 5, 105: Central processing unit 6, 106: Interface cable 7, 70, 107 ... voice storage device 8, 108 ... control unit 9, 109 ... voice encoding unit 10, 110 ... code restoration unit 11, 111 ... message database 12, 112 ... · Deleted message database 13 ··· Code conversion condition storage unit 13a ··· Start command storage area 13b ··· Before conversion method storage area 13c ··· After conversion method storage area 13d ··· Monitoring data storage area 13e ··· · Monitoring content storage area 14 ··· Control command buffer 15 ··· Command monitoring unit 16 ··· Database monitoring unit

Claims (7)

[Claims] 1. A key telephone device having a voice storage function, comprising: a main device connected to an extension telephone and a public line; and a voice storage device connected to the main device and storing voice from the main device. The audio storage device has an encoding unit that encodes audio by a plurality of methods having different compression rates, a decoding unit that restores encoded audio data, and a storage unit that stores encoded audio data. A code conversion condition setting unit, and a code conversion processing unit, wherein the code conversion condition holding unit holds a condition for converting a coding system of the coded audio data stored in the storage unit; The code conversion processing means, when the condition is satisfied,
A key telephone apparatus in which the coded audio data is restored by the decoding unit, and the restored audio is encoded by the encoding unit using a different encoding method. 2. The key telephone device according to claim 1, wherein the condition held by said code conversion condition holding means includes instruction information from said main device. 3. The key telephone apparatus according to claim 2, wherein the instruction information from the main apparatus is an instruction to delete the encoded voice data stored in the storage unit. 4. The key telephone apparatus according to claim 1, wherein said storage means stores the stored audio property information in association with each other, and said condition stored in said code conversion condition storage means. Is a button telephone device including the audio property information. 5. The key telephone apparatus according to claim 4, wherein the property information of the voice is message listening information,
Button telephone device that is either recording time information or registration date and time information. 6. The key telephone apparatus according to claim 1, wherein the storage unit stores the encoding system information of the encoded audio data to be stored, in association with each other. The key telephone device, wherein the condition held in the condition holding means further includes coding method information of the coded voice data. 7. The key telephone apparatus according to claim 1, wherein said code conversion condition holding means holds information designating a converted coding method in correspondence with a code conversion condition. Button telephone equipment.