KR940001703B1 - Voice mailing system - Google Patents

Abstract

The method removes a voice mail at every pre-set time automatically according to classified voice mail categories. The method comprises the steps of: (a) increasing a time counter for checking an end of time period to remove voice mails; (b) checking a first mail profile at the end of a removing period; (c) reading profiles from a hard disk and writting profiles on a memory; (d) checking a removing reference time for profiles; (e) clearing the voice mail record and removing the record from a bi-directional linked list; and (f) discriminating that all records in the profile is checked.

Description

Automatic deletion of voicemail from voicemail device

1 is a block diagram of a voice mail apparatus applied to the present invention.

2 is a configuration diagram of a voice mail management system applied to the present invention.

3 is a structural diagram of a voicemail record used in the present invention.

4 is a flowchart for automatically deleting a voicemail according to the present invention.

5 is a detailed flow diagram of PCHECK 606 in accordance with FIG.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for more efficiently using a limited mass storage device of a voice mailing system (VMS) that services a large number of subscribers by voice. Particularly, the present invention relates to a predetermined reference time according to classified mail types. The present invention relates to a method for automatically deleting voicemails in a voicemail device that can automatically delete voicemails every time.

The voice mail device digitalizes the analog signal digitally in conjunction with an electronic exchange or alone, and stores it on the hard disk so that it can be played again, thereby enabling voice mail function, advertisement recording, and receiving missed messages. It is a system that performs functions such as receiving a message during a call, message broadcasting, and message switching. To realize these functions, a voice mail management system that systematically manages digitized voice data like data used in a general computer is required.

However, digitized voice data is fundamentally different from general data, and due to its feature that needs to be processed in real time, it is unique to voice mail device that is completely different from file management system (FMS) of general computers. You need a voicemail management system.

In addition, if the voice maintains good quality and digitizes the analog signal, the voice per second requires about 4K bytes for the PCM method and about 4K bytes for the ADPCM method. When a typical voicemail is 30-100 seconds in length, the efficient sorting and operation of voicemail will determine the service capability of the system when such a large amount of data is simultaneously used by a large number of subscribers in a limited amount of auxiliary storage. .

When multiple voicemails are registered in a mailbox, the mailbox user of the mailbox accesses the mailbox, listens to the registered mails in turn, and decides whether to delete or keep the mail. .

The voicemail device can delete or keep the voicemail reproduced according to this input from the system.

That is, for example, if there is no input after listening, it is deleted, and if there is a separate input after listening, it is stored. Also, after listening, there is a case to input the archive or delete.

The above-mentioned conventional technique is not a problem when the capacity of the system is larger than the number of serviceable subscribers or the mailbox subscribers do not use much, or when the users clean their mailboxes very frequently, but the system usage is very frequent. When used close to the maximum of the system, the user's indifference or the presence of unneeded voicemails makes available subscriber capacity less.

In other words, even if a lot of voice mails arrive, the mailbox subscriber does not organize his or her mailbox, or if the mailbox subscribers keep the mails unconditionally arrived for a long time, the secondary memory device of the voice mail device has always had a lot of mails. .

Accordingly, an object of the present invention is to provide a method for automatically deleting a voice mail at a predetermined reference time according to a classified mail type to provide a service to more subscribers.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a system block diagram according to the present invention, which digitizes a subscriber connection unit and an analog signal that matches a public network or a telephone network, simultaneously converts the digitized voice data into an actual analog voice, and compresses general voice data. A voice processing unit (hereinafter referred to as a VPU) 10 for reducing the amount of information or reproducing compressed voice information, and a central processing unit (hereinafter referred to as a CPU) 20 for controlling the system; Memory 30 for storing the program and voice information for controlling the CPU 20, a hard disk unit 50 for storing the processed voice data, and according to the command of the CPU 20 And a disk controller 40 for generating data and writing control signals to and from the hard disk unit 50.

2 is a management table constituting the present invention. The voice mail management system of the voice mail apparatus includes a subscriber table 100, a mailbox profile 200, a TRN (TRANSACTION) 300, and a voice cell. 400 and so on.

The voice mail refers to a message of a voice recorded by the user and corresponds to 1: 1 with the TRN (TRANSACTION) 300. The voice cell 400 refers to a predetermined size of memory in the hard disk unit 500 in which recorded voices are stored. That is, the voicemail may be stored in several voice cells displayed on the TRN 300. One voicemail is composed of a combination of voice cells of a certain size because the processing of multiple channels in real time and the size of digitized voice data are very large.

To maintain good voice quality and digitize the analog signal, the PCM method per second requires approximately 8KBYTE and the ADPCM method requires about 4KBYTE. When such a large amount of data is required simultaneously in a plurality of channels (recording or listening), the processing capacity of the hard disk unit 50 storing the actual data determines the system's capability.

If the time taken to read the data of D BYTES corresponding to the voice T seconds from the hard disk unit 50 (HARD DISK SEEK TIME + DATA TRANSFER TIME) is t seconds, in order to process n channels simultaneously in real time, n × The condition of t <= T must be satisfied. Direct access of the hard disk unit 50 using the voice cell index recorded in the TRN 300 by dividing the voice cell 400 into a size satisfying such a condition is more efficient than the file unit access for voice mail management. Therefore, direct access of the hard disk unit 50 using the voice cell index recorded in the TRN 300 and the voice cell 400 to a certain size is more efficient than file access for voice mail management. These voicemails are stored in the subscriber profile PROFILE in the structure as shown in FIG. 3 at the time of recording or registration.

The voice mail subscriber will access his mailbox using the mailbox number assigned to him. In addition, all services in a voice mail device are performed using a mailbox number. The voicemail management system has one mailbox profile 200 per such mailbox number.

The structure of the mailbox profile 200 is shown in FIG. The mailbox profile 200 classifies and stores the general information area 500 for storing general information about the mailbox, and indexes for classifying mail records 504 according to the purpose and linking and storing them in a bidirectional linked list. A mail record classification index area 501, and a mail record area 503 in which actual mail records are stored.

In the general information area 500 for storing general information, data for basic database configuration such as a mailbox number, a password, a type of mailbox, a service level, and a user's telephone number are stored. The mail record classification index area 501 has a predetermined number of mail classification index records 502 according to the type of mailbox. For example, when classifying and indexing only incoming mails, the type of mail classification index record 502 is received only, C is the number of mails connected to this record, and S is the first mail record of voicemails connected to this record. The position in the mail record area 503 of 504 is shown in E, and the position in the mail record area 503 of the last mail record among the voice mails linked to this record 502. In FIG. That is, in the mail record area 503, the mail records 504 are stored in the bidirectional linked list by classification according to the mailbox type.

The mail record area 503 is made up of mail records 504 that store information about a single voicemail, and the mail record is made up of mail records 504 that are stored in FIG. It has the same structure as 505. Each area information at 505 is as follows.

TYPE: Type of voice mail

TIME1: E-mail recording time (year, month, date, minute),

TIME2: Mail sending, sending, receiving or storing time (year, month, date, hour),

TIME3: Message deletion time (year, month, date, minute)

HEAD: Forward Link Field (End: -1)-the message immediately before,

TAIL: Backward Link Field (End: -1)-Mail immediately behind,

TRN INDEX: The index for the actual mail (TRN).

This represents the most basic data for carrying out the invention, and may store other information for other functions.

The mailbox profile 200 has an area capable of storing a certain number of mail records so that when a voice mail is registered in the mailbox (new recording or transmission of recorded mail), information on the voice mail is provided. Will be stored as shown in FIG. At the time of registration, the deletion reference time classified as below must be recorded for automatic deletion of e-mail.

Voicemail is classified as follows.

-SYS_MAIL (System Mail)

This is the mail used by the system to inform all users about system failures or information. Only system administrators can use it.

-GRT_MAIL (Greeting Mail)

It is a message to save the greeting of each personal mailbox and to be heard when first entering the mailbox.

-AD_MAIL (Advertizing Mail)

This is an advertisement mail. Message recorded in the inbox.

-TMD_MAIL (Timed Mail)

This is a mail for sending to other subscribers by designating time.

-BRD_MAIL (Broadcasting Mail)

This is a mail for sending the list simultaneously.

-RCV_MAIL (Receive Mail)

Unregistered mail received and registered in your mailbox.

-RCP_MAIL (Receipt Mail)

Acknowledgment mail, which informs the sender whether the mail sent to the sender has been received.

-NOTRN_MAIL (No-transfer Mail)

Recipients are prevented from sending (switching) received mail to third parties.

-BAK_MAIL (Back-up Mail)

Mail received and backed up to his or her mailbox for retention.

-OG_MAIL (Outgoing Mail)

It's an email that dials outside and delivers mail (immediately).

-TBRD_MAIL (Timed Broadcasting Mail)

This is a mail for sending the list simultaneously by specifying the time.

-TOG_MAIL (Timed Outgoing Mail)

It is a mail that forwards mail by calling outside by designating time.

Such voicemails are classified according to their purpose of use and also by the deletion reference time as follows for automatic deletion.

-Mail that can be deleted only by user's choice

These mails are not auto-deleted and can only be deleted by the delete input of the subscriber with access rights. These mails include greeting mail for greeting a person who accesses to leave a mail in a mailbox, advertisements for a specific information or advertisement for an article for a person accessing a mailbox. System Mail also belongs to this.

Mail deleted by received time

These mails are mails that are automatically deleted by the system if they remain in the system after a certain amount of time has elapsed, based on the time specified as the reception time on the mail record (Figure 3). These mails contain unlisted mails that have been registered with the mailbox. The unlistened mail refers to the mail before being listened to by the receiver among the above-described RCV_MAIL, RCP MAIL, and NOTRN_MAIL.

Mail deleted by recording time

These mails are mails that are automatically deleted by the system if the system remains after a certain amount of time has elapsed, based on the recording time on the mail record (Figure 3). These mails have a BRD_MAIL to broadcast to multiple mailboxes.

Mail deleted by recording time

These mails are mails that are automatically deleted by the system if the system remains after a certain amount of time has elapsed, based on the time specified as the transmission time on the mail record (Figure 3). These mails include TMD_MAIL, OG_MAIL, TBRD_MAIL, and TOG_MAIL described above.

Mail deleted by sending time

These mails are mails that are automatically deleted by the system if they remain in the system after a certain amount of time has elapsed, based on the time specified as the transmission time on the mail record (Figure 3). These mails include TMD_MAIL, OG_MAIL, TBRD_MAIL, and TOG_MAIL described above.

Mail deleted by retention time

These e-mails are automatically deleted by the system if the system remains after a certain amount of time has elapsed, based on the time specified as the storage time on the mail record (Figure 3).

These mails are backup mails that have been received in the mailbox and listened to by the mailbox subscriber, and then backed up to the mailbox again by retention input.

-Mail deleted by input of deletion date and time

These mails are mails that are automatically deleted by the system if they remain in the system even after a certain amount of time has elapsed, based on the time specified by the deletion date and time input of the subscriber with access rights. That is, if the recorder specifies the deletion date and time when the mail is registered, the deletion reference time of the mail becomes the deletion date, not the above times.

By mail classification by deletion standard time, each mail should record the following time when it is registered in mailbox profile, and becomes the deletion standard time when automatic deletion for mail past the retention period.

-SYS_MAIL: Can be deleted only by user's choice

-GRT_MAIL: Can be deleted only by user's choice

-AD_MAIL: Can be deleted only by user's choice

-TMD_MAIL: TIME2 (send time)

-BRD_MAIL: TIME1 (recording time)

-RCV_MAIL: TIME2 (Receive Time)

-RCP_MAIL: TIME2 (receive time)

-NOTRN_MAIL: TIME2 (receive time))

-BAK_MAIL: TIME2 (Storage time)

-OG_MAIL: TIME2 (send time)

-TBRD_MAIL: TIME2 (send time))

-TOG_MAIL: TIME2 (send time)

* All mails with TIME3 deletion date will be deleted.

4 and 5 are flowcharts of automatic deletion of voicemail according to the present invention.

Therefore, in summary, the voice mail management system is represented by a profile (PROFILE) 200 representing a subscriber and a voice mail (TRN: TRANSACTION) indexed from each profile (MAILBOX), in the TRN 300. It is composed of a voice cell 400 of a predetermined index. It can be seen that they are done in FIG. 2 in a system like FIG.

The voice mailbox subscriber has one profile, and the profile has an area for storing a predetermined number of voice mail-related data in the data determined according to the characteristics of the mailbox subscriber. Have The TRN has an index for voice cells in which actual voices are recorded.

Therefore, the present invention has a structure shown in FIG. 2, and according to the flow chart of FIG. Characterized in that it can be used efficiently for the subscriber.

Hereinafter, an embodiment of the operation based on the above-described configuration of the present invention will be described in detail.

First, an automatic deletion method for voicemails registered by the above-described classification method will be described according to the flowcharts according to the present invention of FIGS. 4 and 5.

In FIG. 4, N is the total number of mailbox profiles serviced by the voice mail device, and P is the automatic deletion cycle.

In other words, P is automatically inspected once a day, and P is automatically deleted for 1 day (24 hours). If P is surveyed every 12 hours, P is 12 hours. S represents the performance period of the present flowchart. The voicemail device is thereby determined. S represents the execution cycle of the present flowchart. The voicemail device needs to process a lot of things in order to perform a wide variety of functions, so the mail is automatically deleted by performing this flowchart on a specific time unit.

M is the number of mailbox profiles to process in S cycle.

That is, for example, if N is 10,000, P is 24 hours, and S is 1 hour, then M is 10,000 ÷ 24 approximately 417. In other words, in order to equalize the load on the voice mail system by the automatic deletion of mail, the automatic deletion of mail for N (10,000) subscribers is performed once every P (24 hours) period. Processing must be done for the subscriber M417 in a period.

Where C is the mailbox profile number to be processed first when the flow chart begins at a certain period.

The flowchart of FIG. 4 is performed every 600 seconds by means of a built-in timer. This may be 1 second, 10 seconds, or any time, depending on S. When performed every second, the first step is to increase the time count by one second (601) to set the time.

After that, it is checked whether or not it is time to automatically delete the actual mails. First, it is checked whether the P cycle has been reached (602). If the P cycle is reached, the investigation is restarted from the beginning (from the first mailbox number) (603).

Next, it is checked whether or not the S period is reached (604). If the S cycle is reached, the actual investigation is performed according to the flowchart of PCHECK 606 in FIG. Otherwise, the flowchart of FIG. 4 ends (605).

When the S period is reached, the voice mail is automatically deleted according to the flowchart of FIG. This routine is first started 610 and the first mailbox profile to be examined is read into the system memory 30 from the hard disk 50, which is a large capacity secondary storage device (611). Then, the profile corresponding to C is examined for profile authorization which should be investigated according to the present flowchart (612). That is, if the process (611) fails (for example, no profile), or if the profile is a special purpose profile for which ordinary mailbox subscribers are not allowed to use, the process of (621) is not necessary since the procedure according to this flowchart is not necessary. Do this. If the profile is a profile to be investigated according to the present flowchart (FIG. 5), the next step is to examine whether there is a voicemail stored (613). If there is no archived voicemail, no further investigation is required and the process proceeds to the next profile (612). If so, the first voicemail type is checked (614).

If the time of the examined voicemail is a voicemail that can be deleted only by the user's selection, the process immediately proceeds to step 618. Otherwise, the time is compared according to the deletion reference time according to the type (615). The mail retention times required for this comparison are determined by system parameters. For example, if the voice mail time is RCV_MAIL, the deletion reference time of this mail is the reception time. Therefore, the mail is stored in the system for the deleted mails by the reception time at the reception time (TIME2) of the corresponding voice mail record 505. Add time to compare the time with the current system time.

In operation 615, it is determined whether the corresponding voice mail record and the voice mail corresponding thereto are deleted (616). If the time according to the previous calculation is less than the current system time (i.e. already elapsed time), the mail should be deleted. Otherwise go directly to step 618.

Indeed, deletion 617 of the corresponding mail record clears all contents of the mail record 505, deletes the record in the bidirectional linked list, and includes modifying the mail classification index record 502 if necessary.

The process of 618 is to check whether all mail records in one profile have been examined. If there is a record that has not been examined yet, the next mail record is searched for according to the TAIL value according to the linked list (620).

When all mail records have been examined, the process checks in step 619 that all profiles to be processed in S cycle have been examined. If all the profiles (M) that need to be processed in the period S have been examined, it is returned to the fourth degree according to (622); otherwise, it is returned to the investigation of the next profile (611) according to the process (621).

Therefore, the voice mail can be automatically deleted at a predetermined reference time according to the classified mail types.

Although the embodiments of the present invention have been illustrated and described above, the same is not limited to the above embodiments, and it will be understood that various changes and modifications are possible to those skilled in the art.

As described above, the present invention has an advantage of automatically deleting voicemails, and thus, provides voicemail services to more subscribers.

Claims (4)

Digitizes the voice of the subscriber connection part and the analog signal that matches the public or telephone network and converts the digitized voice data into real analog voice and outputs it, and also compresses general voice data to reduce the amount of information or reproduces the compressed voice information. A voice processing unit 10, a central processing unit 20 for controlling the system, a program for controlling the central processing unit 20, a memory 30 for storing voice information, and processed voice data. An audio mail having a hard disk unit 50 for storing and a disk controller 40 for generating data and writing and reading control signals to the hard disk unit 50 according to a command of the central processing unit 20. A method for deleting a voicemail in a device, the method comprising: a first process of increasing a time town to perform deletion of the voicemail at a predetermined time period; A second process for checking from the first mailbox profile when P (where P is an automatic deletion period) time for the voicemail after the integer line, and an S for deleting the mailbox profile after performing the second process S is a PCHECK execution cycle) when the time comes to delete the voice mail, characterized in that the third process for deleting the voice mail. The method of claim 1, wherein the first process comprises P.N.S and is deleted periodically. The method of claim 1, wherein the third step reads the voice mail from the hard disk to the memory in the order of the profile to be checked, and if the profile is deleted in the first step, checks the corresponding voice mail. A second step for comparing time according to a deletion reference time according to a later type, and for clearing all contents of the voice mail record and corresponding voice mail after performing the second step, and deleting a record in the bidirectional linked list. And a fourth step of determining whether all mail records in one profile have been checked after the third step is performed. 4. The method of claim 3, wherein said third step further comprises modifying the mail classification index record.