JPH11146079A - Communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a reproduction signal from being interrupted even when more data than a prescribed amount are received with a time delay when the data sent via the Internet are temporarily stored by the prescribed amount and reproduced. SOLUTION: This equipment is provided with a buffer 907 that temporarily stores transmitted data, a storage section 921 that stores a data amount A, a coincidence detection section 908 that detects coincidence between the data amount stored in the buffer 907 and the data amount A stored in the storage section 921, and an output control section 920 that outputs the data stored in the buffer 907. When the data amount stored in the buffer 907 reaches A, the data are outputted from the buffer 907, and when the buffer 907 is empty, the data amount stored in the storage section 921 is written into A+Δ, and the data sent via the Internet are stored in the buffer 907. When the data whose amount is A+Δ are stored in the buffer 907, the data output from the buffer 907 is restarted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a communication apparatus for temporarily storing data transmitted via a non-guaranteed service type network such as the Internet and then outputting the data.

[0002]

2. Description of the Related Art Recently, with the spread of the Internet and the promotion of its utilization technology, a service for using the Internet in place of the existing public telephone network, that is, a so-called Internet telephone service has been provided. The use of the Internet has the advantage of being able to make calls at a lower rate than using the existing public telephone network, and there is a tendency for the price gap to increase when talking with a distant place.

FIG. 3 is a block diagram showing an example of a network configuration of the Internet telephone service.

The networks that provide Internet telephone services include general telephones 100 and 1000,
The public telephone network 200, the Internet 600, and a communication carrier that provides a connection service to the Internet 600, a so-called Internet service provider (ISP) 3
00 and 700, a communication protocol conversion device so-called gateway (GW) 400 owned by the ISP 300, and a router 50 for performing route control on the Internet 600.
0, and a communication protocol converter so-called gateway (GW) 900 owned by the ISP 700 and a router 800 for controlling a route on the Internet 600.

In FIG. 3, ISP 300 and telephone 10
0 means that the distances are close to each other, for example, in the same local telephone area. Also, ISP70
It is assumed that 0 and the telephone 1000 are close to each other, for example, in the same local telephone area.

FIG. 4 is a flowchart showing a procedure for making a voice call between the telephone 100 and the telephone 1000 via the Internet 600.

Hereinafter, referring to FIG.
A procedure for making a voice call between the telephone and the telephone 1000 via the Internet 600 will be described.

Telephone 10 connected to public telephone network 200
From 0, a call is made to the GW 400 owned by the ISP 300. When the GW 400 responds, the operator of the telephone 100 notifies the GW 400 of the telephone number of the telephone 1000 of the other party to which the call is to be made by using a PB signal or the like. The GW 400 selects an optimal gateway on the Internet 600 from the telephone number, in this case, the GW 900, and transmits a connection request to the GW 900 to the router 500 in a data packet according to the Internet Protocol (IP). Router 5
00 transmits a connection request packet to the GW 900 to the Internet 600. The connection request packet contains the telephone number of the telephone set 1000 to be connected.

The connection request packet is sent to the Internet 600
Via a plurality of routers in the network, and finally arrives at the router 800 owned by the ISP 700 as the destination.
The GW 900 obtains the telephone number of the telephone set 1000 to be connected from the connection request packet received from the router 800, and makes a call via the public telephone network 200.

When telephone 1000 answers, GW 900
Sends a connection response as a data packet by IP to the router 80
0, and the router 800 sends a connection response packet to the Internet 600. The connection response packet arrives at the router 500 via a plurality of routers in the Internet 600. When the GW 400 receives the connection response packet from the router 500, the GW 400 thereafter receives the connection response packet.
The transmission and reception of the audio signal between the telephone 100 and the telephone 1000 are started in cooperation with.

[0011] The GW 400 converts a continuous voice signal received from the telephone set 100 into a data packet having a protocol header that can be transmitted on the Internet 600, and transmits the data packet to the GW 900 via the Internet 600. The GW 900 converts a data packet including a voice signal received from the GW 400 into a continuous analog or digital voice signal such as PCM, and transmits the digital voice signal to the telephone 1000 via the public network 200.

The GW 900 converts a continuous voice signal received from the telephone 1000 into a data packet having a protocol header that can be transmitted on the Internet 600, and transmits the data packet to the GW 400 via the Internet 600. The GW 400 converts a data packet containing a voice signal received from the GW 900 into a continuous analog or PCM data packet.
The digital audio signal is transmitted to the telephone 100 via the public network 200.

By the above procedure, a voice call is established between the telephone 100 and the telephone 1000 via the Internet 600.

When the public network 200 is an analog public network, the GW 900 modulates a voice signal included in a data packet received from the GW 400 into an analog modulated signal by a modem and transmits the modulated signal to the telephone 1000.
However, the received analog modulation signal may be demodulated by a modem and output as voice. Further, when the public network 200 is a digital public network, the GW 900 transmits an audio signal included in a data packet received from the GW 400 to the telephone 1000 as digital data.
However, the received digital data signal may be output as audio. The same applies when the GW 400 outputs a voice signal included in a data packet received from the GW 900 from the telephone 100.

[0015]

However, since the Internet is originally a communication network constructed for the purpose of communicating data for which real-time characteristics are not strictly required, at present, voices that require strong real-time characteristics are transmitted. When,
An unacceptable delay may occur. In addition, the delay time may fluctuate in various ways depending on the degree of network congestion, which further exacerbates the problem.

As a method of alleviating this problem, data of a voice call is temporarily stored on a receiving side, and after a certain amount of data is stored, the data is reproduced. As a result, a call can be made without interruption even if a delay of the accumulated time occurs.

However, even if this method causes a delay exceeding a predetermined storage amount, the call is interrupted. Also, if the accumulation amount is set large from the beginning, a large delay will occur constantly,
Calls are very difficult to talk about.

Accordingly, the present invention provides a communication device that does not make the operator aware of the deterioration of communication quality even when voice communication data that requires strong real-time properties is received with various delay times. The purpose is to:

[0019]

In order to achieve the above object, according to the present invention, there is provided a temporary storage means for temporarily storing data transmitted through a non-guaranteed service quality network, and a method for storing data in the temporary storage means. State monitoring means for monitoring the state of the temporary storage means, and output control means for restoring the data stored in the temporary storage means into a continuous signal and outputting the data when the state of the temporary storage means satisfies a first condition. Wherein the output control means changes the first condition when the state of the temporary storage means satisfies a second condition.

[0020]

FIG. 1 is a block diagram showing the configuration of a gateway 900 embodying the present invention. The configuration of the network is the same as that of FIG.

The gateway 900 includes, for example, a LAN interface 902 accommodating a LAN 901 such as an Ethernet, a protocol 903 for analyzing a data packet received by the LAN interface 902 and controlling the entire gateway 900, a working memory RAM 904, and a program memory. Storage memory ROM 905
Buffers 907 and 913 for temporarily storing audio data after the protocol header has been removed from the data packet by the CPU 903;
Buffer controllers 907C and 913C for controlling the output of data from
3 and a line interface 91 for connecting a plurality of public lines 912 and 918 to codecs 910 and 916 for converting digital audio data output to analog audio data and outputting them to line interfaces 911 and 917.
1, 917, LAN interface 902 and CPU
903, RAM 904, ROM 905, and buffer 90
7, 913 and a data bus 906 for exchanging data between the codecs 910, 916.

The codecs 910 and 916
07, the data stored in the buffer 913 is restored to a continuous signal and output to the public lines 912 and 918 via the line interfaces 911 and 917.

The router 800 and the gateway 900 are:
It is connected via a LAN 901.

The data stored in the buffers 907 and 913 are transmitted from the telephone 100 to the public network 200, the gateway 400, the router 500, and the Internet 60.
0, the router 800, and the LAN 901.

The Internet 600 is a service quality non-guaranteed network in which real-time performance is not guaranteed and the delay time fluctuates variously depending on the degree of network congestion. Note that the present invention can be applied to a communication device that temporarily stores data transmitted via a non-guaranteed service quality network other than the Internet.

The gateway 900 has a public line 912,
In response to 918, two sets of buffers 907 and the like are provided, but three or more buffers 907 may be provided. Further, the number of connected public lines may be one.

The gateway 400 is a gateway 900
Since the configuration is similar to that described above, the description is omitted.

FIG. 6 is a block diagram showing the configuration of the buffer controller 907C.

The buffer controller 907C includes a state monitoring unit 908 for monitoring the amount of data stored in the buffer 907, a state where the buffer 907 is empty, and a
03, a storage unit 921 for storing an arbitrary state (accumulated amount) of the buffer 907 designated by the instruction unit 03;
8 and the storage unit 921 to match the empty state of the buffer 907 with the match detecting unit 919 that detects the occurrence of an empty state and detects the occurrence of an arbitrary state specified by the CPU 903. The interrupt signal line 9 for notifying the CPU 903 of the detection by the detection unit 919
09 and an output control unit 920 that controls the buffer 907 to start outputting when notified by the match detection unit 919 that the buffer 907 matches the arbitrary state specified by the CPU 903.

The buffer controller 913C has the same configuration as the buffer controller 907C, and a description thereof will be omitted.

FIG. 2 is a block diagram showing the configuration of the buffer 907. The configuration of the buffer 913 is as follows.
Same as 7.

Hereinafter, with reference to FIGS. 1, 2 and 6,
A procedure for storing an audio signal in the buffer 907 will be described.

The voice data packet from the LAN 901 received by the LAN interface 902 is
3 and protocol analysis. The header portion is removed from the data packet, and only the audio data is extracted.
To be temporarily stored.

Here, the buffer 907 is a first-in
It is a first-out type (FIFO) memory.
2 are intermittently input from the left IN of FIG. That is, the first input data is accumulated at the rightmost position of the buffer 907, the next data is accumulated at the second position from the right of the buffer 907, and so on.

After a predetermined amount A is accumulated in the buffer 907, it is continuously output from the right OUT. When the data output from the buffer 907 starts, the data transfer from the buffer 907 to the codec 910 is continuously performed at a constant data transfer rate, for example, 64 kbps. When data is output from the rightmost position of the buffer 907, the second data from the right shifts to the right, and the third and subsequent data from the right shift to the right one by one.

The current Internet 600 is not built for the purpose of transmitting data in real time, and the arrival of data is delayed due to the degree of congestion of the network through which the data propagates. When the data arrives at the LAN interface 902 with a delay due to the delay, the data is not input to the buffer 907 for the delay time. The buffer 907 continuously outputs O at a constant rate.
Since data is output from the UT, the buffer 907 becomes empty unless new data is input from IN while outputting the stored data, and as a result, the operator of the telephone 1000 is interrupted. I will let you know.

In order to prevent this, if the amount of A is set in advance to a large value, for example, about 1 second, even if a large delay occurs in the arriving data, the amount of A remains empty. During this period, no audio break occurs. However, on the other hand, if the amount of A is set to be large, a delay occurs in the reception and listening by the operator of the telephone 1000 by that amount. In general, people who hear a delay of hundreds of milliseconds in receiving will feel uncomfortable with the call.

Therefore, if the network is not crowded,
If the delay in arriving data is small, the amount of data stored in the buffer 907 is set to a small value so that the audio is not interrupted. If the data arrives with a large delay due to network congestion, the amount of data stored in the buffer 907 is reduced. It is configured to be set large so as not to be interrupted, so that the quality of the reception listened to by the operator of the telephone 1000 is improved.

FIG. 5 is a flow chart showing a procedure for changing the storage amount for starting the output of data stored in the storage unit 921 by the CPU 903 and the buffer controller 907C. FIG. 7 is a flowchart in which the procedure of a program executed by the CPU 903 to change the amount of storage for starting data output stored in the storage unit 921 is extracted. The program shown in FIG. 7 is stored in the ROM 905. This program may be stored in the RAM 904. When the program is stored in the RAM 904, the program may be transferred from the outside via the LAN 901 and stored in the RAM 904, or may be transferred from a disk memory (not shown) to the RAM 904 by a disk memory reader (not shown). You may make it.

The gateways 400 and 900 are stored in the ROM 9
05 or a computer that performs the following functions by a program stored in the RAM 904.

Hereinafter, a procedure for changing the storage amount for starting the data output stored in the storage unit 921 will be described with reference to FIGS.

In the buffer 907 for temporarily storing the audio signal received from the telephone 100 via the Internet 600, the CPU 903 determines the amount of data stored in the storage unit 921 at the start of the voice call.
The storage unit 92 is set so as to have a predetermined initial value A.
1 is set (step S510).

Then, the output control section 920 controls the buffer 9
The data output of the buffer 907 is stopped until the data amount of the audio signal received from the telephone set 100 stored in 07 reaches A (step S515). Data amount is A
Is reached (step S520), the coincidence detecting unit 919 detects this and notifies the output control unit 920. Upon receiving this notification, the output control unit 920 starts outputting data from the output OUT of the buffer 907 (step S52).
5).

As shown in FIG. 2, data is accumulated in the buffer 907 in order from the right,
Monitors the storage area in which the data input to the buffer 907 is stored, and outputs the result to the coincidence detection unit 919. The coincidence detection unit 919 determines whether the data amount of the data stored in the buffer 907 has reached A, that is, whether the data input to the buffer 907 has been stored in a specific storage area corresponding to A. to decide.

While the buffer 907 is outputting data from the OUT at a constant rate, if the data input from the IN is delayed and the buffer 907 becomes empty, the coincidence detecting unit 919 detects this, and the CPU 903 detects this. Interrupt line 90
9 is notified. Upon receiving this notification (step S535), the CPU 903 understands that the amount of data to be stored in the buffer 907 is insufficient, and increases the amount A to be stored in the buffer 907 stored in the storage unit 921 by Δ (delta). Is changed using the data bus 906 (step S540). The accumulated amount Δ to be increased is determined by IS
It is assumed that it is set in advance in consideration of the equipment configuration of P700.

As described above, when the first condition that the amount of data stored in the buffer 907 reaches A is satisfied, the data stored in the buffer 907 is restored to a continuous signal and output. When the second condition for emptying the buffer 907 is satisfied, the first condition is changed by increasing the data amount A.

When the data amount of the data stored in the buffer 907 becomes 0, instead of changing the storage amount A, the data amount of the data stored in the buffer 907 becomes 1
When the number of data becomes two or two, the reading of data from the buffer 907 may be stopped, and the storage amount at which the reading of data is restarted may be changed.

The buffer 907 in an empty state stops outputting in steps S515 and S520 until the amount of A + Δ is accumulated, and after the accumulation, the step S525 is executed.
Then, the output is started again from the output OUT at a constant rate.

After that, when the network becomes more congested, the delay increases, and the buffer 907 becomes empty, the match detection unit 919 determines in step S535
In step S540, the CPU 903 changes the storage unit 921 so that the storage amount is further increased by Δ.

The buffer 907 which is in an empty state stops outputting until the amount of A + Δ × 2 is accumulated in steps S515 and S520.
At 25, output is started again from the output OUT at a constant rate.

As described above, every time the state in which the buffer 907 becomes empty in step S535 occurs,
At 540, the data storage amount in the buffer 907 is increased by Δ, and this is continued up to the upper limit of the entire capacity of the buffer 907 (steps S545 and S550). Also, the buffer 9 is added to the maximum storage amount in steps S545 and S550.
A limit smaller than the capacity of 07 may be provided.

In step S540, assuming that the number of times the buffer 907 becomes empty in one call is n, Δ × n is added to the initial value A to obtain the accumulated amount. Exponentially as the nth power of the buffer 90
7 may be increased. Also, for example, Δ1,
The accumulation amount to be increased for the n-th empty state of the buffer, such as Δ2 and Δ3, may be determined in advance.

When CPU 903 detects that the call has ended (step S530), it ends the process.

The buffer 913 has the same configuration as the buffer 907, and a description thereof will be omitted.

As described above, when data is accumulated in the buffer 907 at a speed lower than the predetermined speed V, the buffer 9
Step S until the accumulated amount in the value 07 becomes an appropriate value AA.
At 540, the process of increasing the storage amount is repeated.

If data is stored in the buffer 907 at a speed higher than the predetermined speed V, the process of increasing the storage amount in step S540 is repeated until the amount of data stored in the buffer 907 becomes AAA smaller than the AAA. . However, if the state where the next data is accumulated in the buffer 907 before the buffer 907 becomes empty, the accumulation amount remains A.

The present invention can be modified as follows.

That is, if the data amount has become 0 in step S535, it is determined by the elapsed time since the data amount became 0 and the storage amount increased before (when the data amount becomes 0 for the first time since the start of communication). If the elapsed time is longer than the predetermined time T, the process for increasing the storage amount is not performed. In other words, if the interval between audio breaks is long enough,
The process of increasing the storage amount so as not to interrupt the sound is not performed.

Further, in step S535, the data amount becomes 0
When the data amount becomes 0, the elapsed time from the previous time when the data amount has become 0 and the storage amount has increased (if the data amount has become 0 for the first time since the start of communication, the elapsed time since the start of communication) If the time is longer than the predetermined time TT, the storage amount is reduced. That is, if the interval at which the voice is interrupted is sufficiently long, the delay time is shortened so that communication can be performed more naturally.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIGS. 1, 3, 6, 8, and 9. FIG.
9 shows the operation of reading data from the buffer 907 of the present embodiment, and FIG.
3 is a flowchart showing a program for performing a function. The program of the CPU 903 is stored in the ROM 90
5, or stored in the RAM 904 in advance.

The CPU 903 determines a predetermined amount AB as the accumulated amount.
Is stored in the storage unit 921 (step S805). The output control unit 920 has stopped outputting data from the buffer 907 (step S810).

In this embodiment, when the communication starts and data is input to the buffer 907, the CPU 903 measures the time from the start of the communication (step S).
815). The state monitoring unit 908 monitors the data amount of the data stored in the buffer 907 and outputs the data amount to the coincidence detection unit 919. The coincidence detecting unit 919 determines whether or not the data amount matches the predetermined amount (AB) stored in the storage unit 921. Note that, instead of the lapse of time since the start of communication, the lapse of time since the start of accumulation of data in the buffer 907 may be measured.

Before the data amount of the data stored in the buffer 907 matches the predetermined amount (AB) stored in the storage unit 921, the elapsed time from the start of communication reaches the preset time TA. Then (step S825), the CPU
903 rewrites the predetermined amount stored in the storage unit 921 from AB to AC (step S830). However, AC
Indicates a data amount larger than AB. Therefore, after a predetermined time TA has elapsed from the start of the communication, the match detection unit 919 determines whether or not the data amount of the data stored in the buffer 907 matches the predetermined amount AC larger than AB. . Further, the data amount of the data stored in the buffer 907 is the predetermined amount (AC) stored in the storage unit 921.
If the elapsed time from the start of the communication reaches the preset time TB before matching (step S835),
The CPU 903 sets the predetermined amount stored in the storage unit 921 to A
Rewrite from C to AD (step S840). However, AD indicates a larger data amount than AC. Therefore, after a lapse of a predetermined time TB from the start of data accumulation in the buffer 907, the coincidence detecting unit 919 determines whether or not the data amount of the data accumulated in the buffer 907 matches the predetermined amount AD larger than AC. Is determined.

When the coincidence detecting unit 919 detects that the amount of data stored in the buffer 907 matches the amount of data stored in the storage unit 921 (that is, until the predetermined time TA from the start of communication, A predetermined amount of data AB, a predetermined amount of data AC from a predetermined time TA to TB after the start of communication, and a predetermined time TC after the start of communication.
After that, when it is detected that the data amount matches the predetermined data amount AD), this is notified to the CPU 903 via the interrupt line 909 (step S829). Also,
The output control unit 920 starts outputting data from the buffer 907 (step S845).

When the communication is completed (step S850),
The CPU 903 ends the processing. The buffer 90
If the communication ends before the data amount of the data stored in the storage device reaches the storage amount, the process is similarly terminated.

If the buffer 907 becomes empty before the end of the communication, that is, if the amount of data stored in the buffer 907 becomes 0 (step S855), the coincidence detecting unit 919
Communicates this to the CPU 903 via the interrupt line 909.
Notify. Upon receiving the notification (step S855), the CPU 903 writes the predetermined data amount AB as the storage amount in the storage unit 921 in step S805. The output control unit 920 stops outputting data from the buffer 907 in step S810.

Then, the CPU 903 determines in step S81
At 5, the time elapsed since the buffer 907 became empty is measured. The CPU 903 determines from step S825 to S84
At 0, the accumulation amount is changed according to the passage of this time.

As described above, in the embodiment of the present invention, the storage amount at which data output is started is determined according to the data transfer speed. Then, when the data of the storage amount is stored, the output of the data is started.

When data is stored at a speed higher than the data transfer rate AB / TA such that data of a predetermined data amount AB is stored at a predetermined time TA, the storage amount at which data output is started is set to a predetermined value. This is the data amount AB. That is, when the data of the predetermined data amount AB is accumulated before the predetermined time TA, the output of the data is started.

Further, when the data transfer speed is lower than AB / TA, the storage amount at which data output is started is determined to be a predetermined data amount AC. However, if data of a predetermined data amount AC is not accumulated even after a predetermined time TB,
That is, when the data transmission speed is lower than AC / TB, the storage amount at which data output is started is changed to a predetermined data amount A.
D is determined.

That is, when the data of the predetermined data amount AC is accumulated before the predetermined time TB, the output of the data is started. A predetermined data amount AC before a predetermined time TB
If the data is not stored, the output of the data is started after the data of the predetermined data amount AD is stored.

As described above, in the embodiment of the present invention, the accumulation amount at which data output is started is divided into three types.
In the case of No at 25, the process may return to step S815, and the accumulation amount at which data output is started may be divided into two types. Further, the accumulation amount at which data output is started may be divided into four or more types.

In the above description, the gateway 90
0, 400 controls the output timing of the data from the buffer.
, A buffer may be provided so that the telephones 1000 and 100 control output timing of data from the buffer.

FIG. 10 shows an embodiment of such a telephone set 1000. 10, 150 is a line interface for connecting a line from the public network 200, 155 is a modem, 169 is a buffer, and 160C is a buffer controller. 165 converts the data read from the buffer 160 into an audio signal so that the data is output from the handset of the handset 170;
The voice processing circuit processes the voice signal from the transmitter 70 so that the voice signal is modulated by the modem 155 and transmitted to the public line. 175 is a CPU, 180 is a ROM, a RAM which is a storage medium for storing a program of the CPU, and the like.
And the like.

The configuration of telephone 100 is the same as that of telephone 1000.

In this embodiment, data received from the gateway 900 via the public network 200 is converted into digital data by the modem 155 and stored in the buffer 160. The timing of reading data from the buffer 160 is the same as described above.

In this embodiment, telephone 1000, telephone 1
Reference numeral 00 denotes a computer that performs the above-described functions by a program stored in the memory 180.

When the public network 200 to which the telephone 1000 is connected is a digital network, the modem 155 is unnecessary.

[0079]

As described above, according to the present invention,
If the network is not congested and there is little delay in arriving data, set the storage amount to a small value so that the signal is not interrupted. If the data that requires real-time characteristics is received with various delay times, the communication quality can be properly adjusted in consideration of the intermittent signal and the delay time, even if data that requires real-time characteristics is received with various delay times. It becomes possible to set.

[Brief description of the drawings]

FIG. 1 shows a gateway 9 according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of a 00.

FIG. 2 is a block diagram illustrating a configuration of a buffer 907 according to an embodiment of the present invention.

FIG. 3 is a block diagram illustrating a network configuration example of an Internet telephone service.

FIG. 4 is a diagram showing a procedure for making a voice call between the telephone 100 and the telephone 1000 via the Internet 600.

FIG. 5 is a flowchart illustrating a procedure for changing a storage amount for starting data output according to the embodiment of the present invention.

FIG. 6 is a block diagram illustrating a configuration of a buffer controller 907C according to the embodiment of the present invention.

FIG. 7 is a flowchart illustrating a control program of a CPU 903 according to the embodiment of the present invention.

FIG. 8 is a flowchart showing a procedure for changing a storage amount for starting data output according to the second embodiment of the present invention.

FIG. 9 shows a CPU 9 according to the second embodiment of the present invention.
11 is a flowchart for explaining a control program of FIG.

FIG. 10 shows a telephone 1 according to another embodiment of the present invention.
000 is a block diagram showing a configuration of the 000.

[Explanation of symbols]

 903 CPU 904 RAM 905 ROM 907, 913 Buffer 908 Status monitoring unit 919 Match detection unit 920 Output control unit 921 Storage unit

Claims (32)

[Claims] A temporary storage unit for temporarily storing data transmitted via a non-guaranteed service quality network; a state monitoring unit for monitoring a state in which data is stored in the temporary storage unit; And output control means for restoring the data stored in the temporary storage means into a continuous signal and outputting the continuous signal when the state of the temporary storage means satisfies the first condition, wherein the output control means The communication device changes the first condition when the second condition is satisfied. 2. The communication device according to claim 1, wherein the output control means restores the data stored in the temporary storage means to a continuous signal and transmits the signal to a public telephone network. 3. The communication device according to claim 1, wherein the temporary storage unit uses a first-in first-out (FIFO) storage unit. 4. The communication device according to claim 1, wherein the first condition is a state in which data is stored in a specific storage area of the temporary storage unit. 5. The communication apparatus according to claim 1, wherein the second condition is a state in which data is stored in a specific storage area of the temporary storage unit. 6. Temporary storage means for temporarily storing data transmitted via a service quality non-guaranteed network, and when data of a first data amount is stored in said temporary storage means, said temporary storage means Output control means for restoring the accumulated data to a continuous signal and outputting the same, wherein the output control means outputs data from the temporary accumulation means and stores a data amount of the data accumulated in the temporary accumulation means. When the second data amount is smaller than the first data amount, the data transmitted through the non-guaranteed service quality network is stored in the temporary storage unit, and the second data amount is larger than the first data amount. 3. A communication apparatus, wherein data output from the temporary storage means is resumed after the data having the data amount of 3 is stored in the temporary storage means. 7. The communication device according to claim 6, wherein the output control means restores the data stored in the temporary storage means into a continuous signal and transmits the signal to a public telephone network. 8. The communication apparatus according to claim 6, wherein a first-in first-out (FIFO) storage unit is used as the temporary storage unit. 9. The fourth output control unit according to claim 6, wherein the output control unit outputs data from the temporary storage unit and the data amount of the data stored in the temporary storage unit is smaller than the first data amount. A communication device for stopping the output of the data from the temporary storage means when the data amount is reached. 10. The output control means according to claim 6, wherein said output control means outputs data from said temporary storage means and, when there is no more data stored in said temporary storage means, outputs said data of said third data amount. A communication device, wherein the output of data from the temporary storage unit is resumed after being stored in the storage unit. 11. An output control method for temporarily storing data transmitted via a non-guaranteed service quality network and then outputting the data, wherein when the first amount of data is stored, the stored data is continuously transmitted. When the data amount of the data stored by outputting the data becomes a second data amount smaller than the first data amount,
The data transmitted via the non-guaranteed service type network is accumulated, and the data output is restarted after the third data amount larger than the first data amount is accumulated. Output control method. 12. The output control method according to claim 11, wherein the stored data is restored to a continuous signal and transmitted to a public telephone network. 13. The output control method according to claim 11, wherein data is stored in a first-in first-out (FIFO) type memory. 14. The data processing device according to claim 11, wherein when the data amount of the data stored by outputting the data becomes a fourth data amount smaller than the first data amount,
An output control method, wherein the output of the data is stopped. 15. The method according to claim 11, wherein when the data output and the stored data are exhausted.
An output control method, wherein the output of the data is restarted after the data of the third data amount is accumulated. 16. Temporary storage means for temporarily storing data transmitted through a non-guaranteed service network in a computer; and temporarily storing data of a first data amount in said temporary storage means. Functioning as output control means for restoring data stored in the means into a continuous signal and outputting the data, wherein the output control means outputs data from the temporary storage means and outputs data of the data stored in the temporary storage means. When the amount becomes the second data amount smaller than the first data amount, the data transmitted through the non-guaranteed service quality network is accumulated in the temporary storage means, and is larger than the first data amount. A program for causing a function of resuming output of data from the temporary storage means after data of the third data amount is stored in the temporary storage means. A storage medium storing the ram. 17. The storage medium according to claim 16, wherein said output control means restores the data stored in said temporary storage means into a continuous signal and transmits it to a public telephone network. 18. The storage medium according to claim 16, wherein said temporary storage means is a first-in first-out (FIFO) storage means. 19. The fourth output control unit according to claim 16, wherein the output control unit outputs data from the temporary storage unit, and the data amount of the data stored in the temporary storage unit is smaller than the first data amount. A storage medium which stops outputting data from the temporary storage means when the data amount is reached. 20. The data processing apparatus according to claim 16, wherein said output control means outputs data from said temporary storage means and, when there is no more data stored in said temporary storage means, outputs said data of said third data amount. A storage medium wherein the output of data from the temporary storage means is resumed after being stored in the storage means. 21. Temporary storage means for temporarily storing data transmitted via a network of non-guaranteed service quality, and said temporary storage means stores data of a data amount corresponding to a speed at which data is stored in said temporary storage means. And an output control unit for restoring the data stored in the temporary storage unit into a continuous signal and outputting the continuous signal when the data is stored in the temporary storage unit. 22. The output control unit according to claim 21, wherein the data of the first output start data amount is stored in the temporary storage unit when the data is stored in the temporary storage unit at a speed lower than a predetermined speed. Once accumulated,
The data stored in the temporary storage unit is restored to a continuous signal and output. If the data is stored in the temporary storage unit at a speed higher than a predetermined speed, the first output start data is stored in the temporary storage unit. A communication apparatus characterized in that when data of a second output start data amount smaller than the amount is accumulated, the data accumulated in the temporary accumulation means is restored to a continuous signal and output. 23. The communication apparatus according to claim 21, wherein said output control means restores the data stored in said temporary storage means into a continuous signal and transmits the signal to a public telephone network. 24. The communication apparatus according to claim 21, wherein the temporary storage means uses a first-in first-out (FIFO) storage means. 25. An output control method for temporarily storing data transmitted via a non-guaranteed service type network and then outputting the data, wherein the input data is stored and a data amount corresponding to a speed at which the data is input. An output control method characterized in that when the data is stored, the stored data is restored to a continuous signal and output. 26. The method according to claim 25, wherein when data is input at a speed lower than a predetermined speed, when data of the first output start data amount is stored, the stored data is restored to a continuous signal. In the case where data is stored at a speed higher than a predetermined speed and data of a second output start data amount smaller than the first output start data amount is stored, the stored data is converted into a continuous signal. An output control method characterized in that the output is restored and output. 27. The output control method according to claim 25, wherein the stored data is restored to a continuous signal and transmitted to a public telephone network. 28. The output control method according to claim 25, wherein data is stored in a first-in first-out (FIFO) type memory. 29. A temporary storage means for temporarily storing data transmitted through a network with a non-guaranteed service quality in a computer, and said temporary storage means stores said temporary data in a data amount corresponding to a speed at which data is stored in said temporary storage means. A storage medium storing a program for functioning as output control means for restoring the data stored in the temporary storage means into a continuous signal and outputting the same when the data is stored in the storage means. 30. The output control unit according to claim 29, wherein the data of the first output start data amount is stored in the temporary storage unit when the data is stored in the temporary storage unit at a speed lower than a predetermined speed. Once accumulated,
The data stored in the temporary storage unit is restored to a continuous signal and output. If the data is stored in the temporary storage unit at a speed higher than a predetermined speed, the first output start data is stored in the temporary storage unit. A storage medium characterized in that when data of a second output start data amount smaller than the amount is stored, the data stored in the temporary storage means is restored to a continuous signal and output. 31. The storage medium according to claim 29, wherein said output control means restores the data stored in said temporary storage means to a continuous signal and transmits the signal to a public telephone network. 32. The storage medium according to claim 29, wherein said temporary storage means is a first-in first-out (FIFO) storage means.