JPH1127431A - Tone generation method for exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate interruption of a service and to make addition and change of tone simple by storing PCM data and intermittent ratio, generating serial tone data of a specified intermittent ratio and outputting it to a specified time slot. SOLUTION: A purpose and tone number intermittent ratio are inputted, corresponding to a time number from a maintenance terminal (PC) 1 to a central processing equipment(CPE) 2. A CPE 2 generates data for specifying every kind of tone written in a tone data memory, PCM data and the intermittent ratio and sends them to a CPE interface of a tone control device 3 by way of a data bus 5. Then, all kinds of tone registered in a tone selection memory, that is, kinds of tone including corresponding the intermittent ratio corresponding to a time slot number, are outputted to a time division switch(TSW) 4 as a tone signal (TONE) time division multiplexed. Thus, serial tone data are outputted to the specified time slot.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone generation method for generating a tone used in an exchange.

[0002]

2. Description of the Related Art Conventionally, a tone source used in a time-division exchange has a tone at a predetermined frequency and a predetermined level and is stored in a ROM in the form of PCM data processed at a sampling period, and the tone is transmitted. Sometimes RO
The PCM data stored in M is read out at a sampling cycle and sent to the highway.

[0003]

However, in the conventional method as described above, since the PCM data of the tone is stored in the ROM, it is necessary to add a new tone with an increase in the number of services or to add a new tone. If you want to change the type, you need to replace the ROM, RO
While the M is being exchanged, there is a drawback in that the tone cannot be output from the exchange, causing service interruption.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and a central processing unit of a switchboard uses a maintenance terminal device to store a tone frequency, a level, an intermittent ratio, an application, a time slot to be output, and the like. By instructing the apparatus, the tone is converted into PCM sampling data and stored, so that the tone can be easily added or changed without interruption of service.

[0005]

According to a first aspect of the present invention, there is provided an apparatus for outputting tone information comprising a tone frequency, a level and an intermittent ratio, or outputting usage information and a tone to a central processing unit. A maintenance terminal device for inputting a time slot number to be processed, a central processing unit for generating PCM data corresponding to specified tone information or use information by arithmetic processing and transferring the generated PCM data to a tone control device, and the PCM data. And a tone control device for storing the intermittent ratio and generating serial tone data of the specified intermittent ratio and outputting the generated serial tone data to the specified time slot.

According to the present invention, the central processing unit generates the tone PCM data in accordance with an instruction from the maintenance terminal device and stores the tone PCM data in the tone control device, so that a new tone can be easily generated without interrupting the service. It can be added or changed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing only a portion related to tone generation and output of a time division switch.

In the figure, 1 is a personal computer (PC) used as a maintenance terminal device, 2 is a central processing unit (CPE) for controlling the whole exchange, and 3 is PCM data of tone, intermittent ratio and time slot number. Tone control device (TONE CT) that performs accumulation and output control
L), 4 is a time division switch (TSW) for performing time division exchange connection between voice highways (HW), 5 is a central processing unit (CPE) 2, and a tone control device (TONE CTL)
3. A data bus (DATA BUS) for exchanging data between the time division switches (TSW) 4.

FIG. 2 shows the tone control device (T
FIG. 3 is a diagram showing a configuration of a time-division multiplexed tone (TONE) output from an ONE CTL) 3 to a time-division switch (TSW) 4. TS0 to TSn each include (n + 1) pieces of various tone signals. Indicates a time slot.

[0010] FIG. 3 shows a case where the maintenance terminal device (PC) 1
FIG. 9 is a diagram illustrating an example of input designation data when data for each use of a tone is designated and registered for each time slot.

FIG. 4 shows a tone number (T) designated in FIG.
ONE No. 4) shows an example of data for registering the frequency and level of PCM data of each tone.

FIG. 5 shows the tone control device (T
ONE CTL) 3.
1 is a CPE interface (CPE INF) for exchanging information with the central processing unit (CPE) 2 in FIG.
Is an inter-signal counter (INT CNT) as a reference counter for determining the continuity ratio of the tone output, and 33 is a time slot allocation counter (TS CN) for converting the tone PCM data into a time division multiplexed output signal.
T), 34 is a tone selection memory (TONESEL MEM), which is an allocation memory for designating the type of tone, ie, frequency and intermittent ratio, for each time slot, and 35 is a PC of the tone.
A sampling frequency counter (SAMPL CNT) for determining a repetition period for reading M data, 36 is a tone data memory (TO) for storing PCM data for each tone.
NE DATA MEM) 37 is a tone data memory (TONE DATA MEM) 36 which is parallel data.
Is a parallel / serial conversion unit (P / S) for converting PCM data read from the PCM into serial PCM data.

Next, an outline of the tone generation operation in the present embodiment will be described.

First, the maintenance terminal device (PC) 1 to FIG.
As shown in FIG. Enter the frequency and level for each, and register the type of tone.

When the central control unit (CPE) 2 receives this data, it operates on the basis of the frequency and the level value to generate PCM data of the tone, and outputs the data bus (DATA).
BUS) 5 via a tone control device (TONE CT)
L) 3 CPE interface (CPE INF) 31
Send to

At this time, the central processing unit (CPE) calculates,
The PCM data to be generated has such a length that a continuous tone signal can be obtained by repeatedly reading one period of PCM data. Therefore, the length of the generated PCM data varies depending on the frequency.

CPE interface (CPE INF)
Reference numeral 31 transfers and writes the received tone PCM data to an empty area of a tone data memory (TONE DATA MEM) 36. Therefore, the PCM of the tone used
The data is saved as is. This is like a memory area map connected by a dotted line below the tone data memory (TONE DATA MEM) 36 in FIG.

Next, as shown in FIG. 3, from the maintenance terminal device (PC) 1 to the central processing unit (CPE) 2, the application and the tone number (TONE) are associated with the time slot number (TS No.). No.) Enter the intermittent ratio.

The central processing unit (CPE) 2 having received these information sets the tone data memory (TONE DA memory).
TA MEM) 36 of various tones written in
CM data and data designating the interruption ratio are generated, and the CPE interface (CP) of the tone control device (TONE CTL) 3 is generated via the data bus (DATA BUS) 5.
E INF) 31.

CPE interface (CPE INF)
31 stores the received designated data in a tone selection memory (TON
E SEL MEM) 34 and write to the empty area. The tone selection memory (TONE SEL ME ME) shown in FIG.
The memory area map connected by a dotted line below the M) 34 is a part thereof, and follows the example shown in FIG. In addition, there is a memory area for storing the intermittent ratio.

As a result, necessary data is stored in the tone controller (TONE CTL) 3, so that the designated tone can be used.

The intermittent ratio of the tone is determined based on the count value of the inter signal counter (INT CNT) 32, and the tone selection memory (TONE SEL MEM) 34
Sent to

Tone selection memory (TONE SEL ME)
The designated data in the M) 34 is read out by the time slot counter (TS CNT) 33 in the order of the time slot.

According to the read data, one of the memory areas of the PCM data of various tones stored in the tone data memory (TONE DATA MEM) 36 is stored.
PCM data of the tone in the memory area is designated by a sampling counter (SAMPL CNT).
The data is sequentially read out at the sampling frequency cycle counted at 35 and is converted into a parallel / serial converter (P / S) 3.
It is sent to 7.

Parallel / serial converter (P / S) 37
In this example, PCM data of a tone which is parallel data is converted into a serial signal.

Tone selection memory (TONE SEL ME)
M) 34, that is, all types of tones registered, that is, the types of tones including the gating ratio corresponding to the time slot number (TS No.) shown in FIG. 3 are time-division multiplexed as shown in FIG. The tone signal (TONE) is output to the time division switch (TSW) 4.

Each time slot (TS0 to TS0) of FIG. 2 output from the tone controller (TONE CTL) 3
n) is a time-division switch (TONE).
SW) 4 and time-divisionally exchanged with a desired time slot of a desired highway (HW) and transmitted.

As described above, addition or change of the tone frequency or level is performed by the central processing unit (CPE) 2.
And writing the generated PCM data to an empty area of the tone data memory (TONE DATAMEM) 36 of the tone control device (TONE CTL) 3, and specifying data for each tone application shown in FIG. To tone control device (TONE CTL) 3
This is done by writing to an empty area of the tone selection memory (TONE SEL MEM) 34 of the above, so that the operation of the exchange is not affected.

The tone is used for the central processing unit (CP
E) 2 and the type of tone is selected by determining the time slot (TS) in FIG. 2 according to the application.

[0030]

According to the present invention, when a new type of tone is added to the switch or the tone being used is changed, information regarding the frequency, level, intermittent ratio, and use of the tone is stored in the center of the switch. It is only necessary to register necessary information to the tone control unit under the control of the processing unit and the central processing unit, so even while the exchange is operating, the personal computer as a maintenance terminal can add or change the type of tone. Has the effect that it can be easily performed.

Further, since it is possible to easily add or change the tone, the user can add or change the tone by himself even if the maintenance person does not go out.
There is also the effect that it can be changed.

[Brief description of the drawings]

FIG. 1 is a block diagram of relevant control parts of an exchange according to an embodiment of the present invention.

FIG. 2 is a time slot configuration diagram of tone output.

FIG. 3 is an example of registration of designation data for each use of a tone.

FIG. 4 is an example of registration of tone PCM data.

FIG. 5 is a block diagram illustrating a configuration of a tone control device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Maintenance terminal device (PC) 2 Central processing unit (CPE) 3 Tone control device (TONE CTL) 31 CPE interface (CPE INF) 32 Inter signal counter (INT CNT) 33 Time slot counter (TS CNT) 34 Tone selection memory (TONE SEL MEM) 35 Sampling counter (SAMPL CNT) 36 Tone data memory (TONE DATA ME)
M) 37 Parallel / serial converter (P / S) 4 Time-division switch (TSW) 5 Data bus (DATA BUS)

Claims (1)

[Claims] 1. A maintenance terminal device for inputting tone information comprising a tone frequency, a level, and an interrupt ratio to a central processing unit, or application information and a time slot number for outputting a tone, and information on a designated tone. Or, a central processing unit that generates PCM data corresponding to the application information by arithmetic processing and transfers the PCM data to the tone control device, stores the PCM data and the intermittent ratio, and generates serial tone data of the specified intermittent ratio. And a tone control device for outputting to a designated time slot.