JP2003235023A - Data supply apparatus, data supply method, and program for allowing computer to execute the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data supply apparatus for simply and surely supplying data to a data processing apparatus. <P>SOLUTION: A video server 10 acting like the data supply apparatus includes: a decoder 12 for executing similar decoding processing to that of a plurality of decoders 20 acting like data processing apparatuses; a supply section 14a for sequentially supplying encoded data stored in a storage section 11 to the decoders 20, 21 in a similar timing; a consumption monitoring section 14b for monitoring a progress state of the processing by the decoder 12 and discriminating whether or not the state is available for receiving and processing data sequentially supplied by the supply section 14a without missing; and a supply control section 14c for controlling the supply section 14a to stop supply of data when the consumption monitoring section 14b discriminates that the state is a processing impossible state and controlling the supply section 14a to continue or restart supply of data when the consumption monitoring section 14b discriminates that the state is a processing possible state. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data supply device, a data supply method, and a data supply method for sequentially supplying data via a network to a data processing device that executes predetermined processing while sequentially inputting predetermined data. The present invention relates to a program that causes a computer to execute the method, and more particularly to a data supply device, a data supply method, and a program that can supply data to a data processing device simply and accurately.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, a plurality of data processing devices 40, which perform predetermined processing while sequentially inputting predetermined data, and a plurality of data supply devices 30,
A data supply system is known that is communicably connected via a network 1 such as an AN or the Internet and sequentially supplies data from a data supply device 30 to a data processing device 40.

In such a data supply system, coded data is sequentially input from a video server (corresponding to the "data supply device 30" shown in FIG. 3) which stores coded data obtained by coding moving images. There is a data supply system or the like that sequentially supplies encoded data to a decoder (corresponding to the "data processing device 40" shown in FIG. 3) that executes a decoding process.

In such a data supply system, if data is supplied unilaterally without grasping the progress of data processing by the data processing device 40,
Unless the data processing device 40 is provided with a vast storage area for storing the supplied data, it becomes impossible to accurately execute the scheduled data processing. This is because the data supply speed (data input speed) to the data processing device 40 generally exceeds the data processing speed (data consumption speed) by the data processing device 40.

Specifically, the data supply system composed of the above video server and decoder will be described as an example. In the decoder which is the data processing device 40, the input speed of encoded data is generally the speed of the decoding process. Will exceed. Therefore, unless a vast memory for storing the encoded data is provided, the encoded data that is sequentially supplied overflows without being input to the decoder, which makes it impossible to perform the decoding process accurately. .

From the above, in the data supply system as shown in FIG. 3, in order to prevent the sequentially supplied data from being overflowed without being input to the data processing device 40. It is common practice to adjust the timing of supplying data at 30.

As a conventional technique for adjusting the data supply timing, a case where the data processing device 40 adjusts the data supply timing by analyzing the content of the data will be described below. FIG. 4 is a block diagram showing a configuration example of the data supply device 30 shown in FIG. 3 when the timing of supplying data is adjusted by analyzing the content of the data.

As shown in the figure, the data supply device 30
Is a storage unit 31 that stores data (for example, encoded data), a communication control IF unit 32 that controls communication with the data processing device 40, and a control that controls supply of data to the data processing device 40. The control unit 33 further includes a unit 33, and the control unit 33 analyzes the content of data.
3a.

A data supply device 3 having such a configuration
At 0, the analysis unit 33a analyzes the content of the data (data stored in the storage unit 31) supplied to the data processing device 40, and thereby the progress of the processing by the data processing device 40 supplied with this data. Understand the situation virtually. Then, the control unit 33 continues, stops, or restarts the data supply based on the virtually recognized progress status of the data processing device 40, so that the sequentially supplied data is input to the data processing device 40. Don't let it overflow.

[0010]

However, in the above-mentioned conventional technique, the data supply device 30 bears complicated processing, but the data processing device 40 does not always supply data accurately. There was a problem that I could not do it.

That is, in the above-mentioned conventional technique, the data supply device 30 analyzes the content of the data supplied to the data processing device 40 in order to virtually grasp the progress of the processing by the data processing device 40. It is necessary to bear complicated processing. Further, when the content of the data cannot be analyzed (for example, when the data is encrypted), the progress status cannot be virtually grasped, so that the data processing device 40 cannot On the other hand, it becomes impossible to supply data accurately.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and is a data supply device and a data supply device that can supply data to a data processing device easily and accurately. It is an object to provide a method and a program that causes a computer to execute the method.

[0013]

[Means for Solving the Problems]
To achieve the object, a data supply device according to the invention of claim 1 is a data supply device for sequentially supplying predetermined data through a network to a data processing device that executes predetermined processing while sequentially inputting the data. A supply device, processing means for executing a predetermined process while sequentially inputting the data at an input speed and a processing speed similar to the input speed and the processing speed of the data processing device, and the data processing device and the processing means And a control means for controlling the supply of the data by the supply means according to the progress status of the processing by the processing means. To do.

Further, in the data supply apparatus according to a second aspect of the present invention, in the invention according to the first aspect, the control means monitors the progress status of the processing by the processing means and sequentially supplies the data by the supply means. Monitoring means for determining whether or not it is in a state in which it is possible to input and process data without leakage, and in a state in which it is impossible to input and process the data without leakage by the monitoring means If it is determined that the data is supplied, it is determined that the supply unit is controlled to stop the supply of the data and the monitoring unit can input and process the data without leaking. In this case, a supply control unit that controls the supply unit to continue or restart the supply of the data is provided.

The data supply apparatus according to a third aspect of the present invention is the data supply apparatus according to the first or second aspect, wherein the processing means executes the same processing as the processing executed by the data processing apparatus. Is characterized by.

A data supply device according to a fourth aspect of the present invention is the data supply device according to the first, second or third aspect of the invention, wherein the data processing device sequentially inputs a coded stream consisting of a series of coded data. While performing the decoding process, the supply means sequentially supplies the coded stream.

According to a fifth aspect of the present invention, there is provided a data supply method in which data is sequentially supplied to a data processing device which executes predetermined processing while sequentially inputting predetermined data via a network. A method, wherein the input speed and the processing speed of the data processing device are the same as the input speed and the processing speed, the processing unit performing the predetermined processing while sequentially inputting the data, and the data processing device, It is characterized by including a supply step of sequentially supplying the data at the same timing, and a control step of controlling the supply of the data by the supply step according to the progress status of the processing by the processing unit.

A program according to a sixth aspect of the present invention is a data supply method for sequentially supplying the data via a network to a data processing device which executes a predetermined process while sequentially inputting the predetermined data. A program to be executed by a computer, the processing unit executing the predetermined processing while sequentially inputting the data at an input speed and a processing speed similar to the input speed and the processing speed of the data processing apparatus, and the data processing apparatus. On the other hand, a computer is made to perform a supply step of sequentially supplying the data at the same timing and a control step of controlling the supply of the data by the supply step according to the progress status of the processing by the processing unit. Is characterized by.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a data supply apparatus, a data supply method, and a program for causing a computer to execute the method according to the present invention will be described in detail below with reference to the accompanying drawings. In the present embodiment,
A case where the present invention is applied to a so-called video server will be described.

(System Outline and Features) First, the outline and main features of the data supply system using the video server according to the present embodiment will be described. Figure 1
FIG. 1 is a system configuration diagram showing an overall configuration of a data supply system using a video server according to this embodiment.

As shown in the figure, this data supply system includes a plurality of video servers 10 and a plurality of decoders 20.
And are communicably connected via a network 1 such as a LAN or the Internet. The video server 10 corresponds to the "data supply device" described in the claims, and the decoder 20 corresponds to the "data processing device" described in the claims.

Generally, in this data supply system,
Each video server 10 is an MPEG (moving p).
Each of the decoders 2 is an encoded stream (hereinafter referred to as “encoded data”) obtained by encoding a moving image by a compression encoding method called an icture experts group).
0 is sequentially supplied. In addition, each decoder 20 converts the encoded data sequentially supplied from each video server 10,
The decoding process is executed while sequentially inputting.

That is, when the encoded data is sequentially supplied from one video server 10 to each decoder 20,
Each decoder 20 executes a decoding process while sequentially inputting encoded data at the same input speed and processing speed. Therefore, when a display device such as a monitor is connected to each decoder 20, in each display device,
The decoded moving image is displayed at the same display speed.

The data supply system is characterized mainly in the data supply processing by the video server 10. Specifically, the video server 10 includes each decoder 20.
A decoder 12 having the same functional configuration as the above, and a supply unit 14a that sequentially supplies encoded data to the decoder 12 and each decoder 20 at the same timing,
Furthermore, depending on the progress of processing by the decoder 12,
The supply of data by the supply unit 14a is controlled,
Data can be supplied to each decoder 20 easily and accurately.

That is, the video server 10 monitors the progress of the decoder 12 which executes the decoding process while sequentially inputting the encoded data at the same input speed and processing speed as the decoders 20. Ultimately, the progress status of the processing by each decoder 20 is monitored by the method, and the data sequentially supplied is used for each decoder 2
I try not to overflow without being input to 0.

(Structure of Video Server) Next, the structure of the video server 10 shown in FIG. 1 will be described. As shown in the figure, each video server 10 includes a storage unit 11 and a decoder 1.
2, a communication control IF unit 13, and a control unit 14. The decoder 12 corresponds to the "processing means" described in the claims, and the control unit 14 corresponds to the "supplying means" and the "control means" described in the claims.

Of these, the storage unit 11 is the network 1
Is a memory for storing data supplied to each decoder 20 connected to the decoder 12 and the decoder 12 included in the video server 10. Specifically, MPEG1 and MPEG
2. An encoded stream (encoded data) encoded by an image encoding method such as MPEG4 is stored for each video source.

In the coded stream, so-called variable length coded data is arranged in order from the head.
Then, the decoding device (decoder 20 and decoder 12)
Sequence, so that you can receive correctly on the side
It has a hierarchical structure of GOP (Group of Pictures), pictures, slices, macroblocks, and blocks, and its data structure is finely determined.

The decoder 12 is a processing unit having the same functional configuration as each of the decoders 20 connected to the network 1, and sequentially inputs encoded data at the same input speed and processing speed as each decoder 20. Execute the decryption process.

Specifically, the decoder 12 (and each decoder 20) decodes the variable-length coded data to restore the quantized DCT coefficient, and the restored quantized DCT coefficient. Inverse quantization processing for inverse quantization to restore DCT coefficients, inverse discrete DCT conversion processing for inverse DCT conversion of restored DCT coefficients to restore pixel data, motion compensation for performing motion compensation on restored pixel data The decryption process is executed after each process step of process. Then, these processes are executed in predetermined units such as so-called slice units, row units, or macroblock units.

Therefore, the decoder 12 (and each decoder 20) receives each of the encoded data from the storage unit 11 and then performs each processing (variable length decoding processing, dequantization processing,
The inverse discrete DCT transform process and the motion compensation process) are not sequentially executed, but the respective processes are executed in parallel while sequentially inputting the encoded data from the storage unit 11 for each predetermined unit. Further, each of these processes is executed at the same input speed and processing speed as each decoder 20 connected to the network 1.

The decoder 12 executes the decoding process while sequentially inputting encoded data at the same input speed and processing speed as the decoders 20.
Since data that can be processed by each decoder 20 can also be processed by the decoder 12, there is a problem due to the inability to analyze the content of the data (a situation in which the progress cannot be grasped), as described in the related art. Cannot occur.

The communication control IF unit 13 is used by the video server 10.
Communication control between the network and the network 1. The control unit 14 has an internal memory for storing a control program such as an OS (Operating System), a program defining various processing procedures, and required data, and executes various processing by these. Functionally conceptually, the supply unit 14a and the consumption monitoring unit 14b
And a supply controller 14c.

Of these, the supply unit 14a sequentially supplies the encoded data stored in the storage unit 11 to each decoder 20 connected to the network 1 and the decoder 12 included in the video server 10 at the same timing. It is a supplying means. That is, each decoder 20 or decoder 1
Different coded data is not specifically supplied to 2 but the same coded data is simultaneously supplied to each decoder 20 and the decoder 12.

The consumption monitor 14b is a monitor for monitoring the progress of processing by the decoder 12 provided in the video server 10. More specifically, in the decoder 12, generally, the input speed of the encoded data exceeds the speed of the decoding process. Therefore, if the supply of the encoded data to the decoder 12 is continued, the input data of the decoder 12 is vast. Unless it has a memory, it becomes impossible to input encoded data without leakage.

Therefore, the consumption monitoring unit 14b has the decoder 1
2 monitors the progress of the processing by the decoder 12,
It is determined whether or not the data sequentially supplied by the supply unit 14a can be input and processed (data can be consumed) without leaking. Also, the consumption monitoring unit 14
b, together with this determination, whether all of the encoded data to be supplied from the storage unit 11 (from the beginning to the end of the encoded data) has been supplied while the encoded data is being supplied by the supply unit 14a. judge.

The decoder 12 is, as described above,
Decoding processing is executed while sequentially inputting encoded data at the same input speed and processing speed as the decoders 20 connected to the network 1. Therefore,
The consumption monitoring unit 14b monitors the progress status of the processing by the decoder 12, and ultimately monitors the progress status of the processing by each decoder 20 connected to the network 1.

The supply control unit 14c is a supply control means for controlling the supply of data by the supply unit 14a according to the progress of the processing by the decoder 12 provided in the video server 10. Specifically, it is determined by the monitoring by the consumption monitoring unit 14b that the decoder 12 is in a state in which encoded data cannot be input and processed without leakage (data consumption is impossible). In this case, the supply unit 14a is controlled to stop the supply of encoded data.

On the other hand, by the monitoring by the consumption monitoring unit 14b, the decoder 12 can input and process the encoded data without leakage (a state in which the data can be consumed).
If it is determined that the supply control unit 14c
Controls the supply unit 14a to continue or restart the supply of encoded data.

The supply section 14a is, as described above,
The encoded data is sequentially supplied not only to the decoder 12 included in the video server 10 but also to each decoder 20 connected to the network 1 at the same timing. Therefore, when the supply of data to the decoder 12 is stopped, continued, or restarted by the control of the supply controller 14c, the supply of data to each decoder 20 is also stopped, continued, or restarted.

(Data Supply Process) Next, the procedure of the data supply process by the video server 10 shown in FIG. 1 will be described. FIG. 2 is a flowchart showing a procedure of data supply processing by the video server 10 shown in FIG.

In the video server 10, first, the supply unit 14a sends the encoded data stored in the storage unit 11 to each decoder 20 connected to the network 1 and the decoder 12 included in the video server 10. ,
The process of sequentially supplying at the same timing is started (step S201). In each of the decoder 20 and the decoder 12, the decoding process is executed while sequentially inputting the encoded data at the same input speed and processing speed.

Then, the consumption monitoring unit 14b includes the storage unit 11
Whether all of the encoded data to be supplied from (from the beginning to the end of the encoded data) have been supplied and the progress of processing by the decoder 12 are monitored, and the decoder 12 is sequentially operated by the supply unit 14a. It is repeatedly determined whether or not it is possible to input and process the supplied data without loosing it (to consume the data) (steps S202 and S203).

Here, not all of the encoded data to be supplied from the storage unit 11 is supplied, and the decoder 12 can input and process the data sequentially supplied by the supply unit 14a without leakage. When it is repeatedly determined that there is something (No at Step S202 and Yes at Step S203), the supply control unit 14c controls the supply unit 14a to continue the supply of the encoded data.

Then, when it is determined that all the encoded data to be supplied from the storage unit 11 has been supplied after the supply of the encoded data is continued (step S
If Yes, the supply process of the encoded data by the supply unit 14a ends (step S207).

On the contrary, before all the encoded data to be supplied from the storage unit 11 is supplied, the decoder 12 inputs and processes the data sequentially supplied by the supply unit 14a without leakage. If it is determined that the supply is impossible (NO at step S203), the supply control unit 14c controls the supply unit 14a to stop the supply of the encoded data (step S204).

When the supply is stopped, the decoder 12 and the decoders 20 execute the decoding process while stopping the input process of the encoded data, so that the data sequentially supplied by the supply unit 14a will be input without leakage. It will return to a state in which it can be processed.

Therefore, in the video server 10,
After the supply of the encoded data is stopped (step S20
4), the consumption monitoring unit 14b again monitors the progress of processing by the decoder 12, and the decoder 12 determines that the supply unit 1 has
It is repeatedly determined whether or not it is possible to input and process the data sequentially supplied by 4a (to consume the data) (step S20).
5).

When it is determined that the decoder 12 can input and process the data sequentially supplied by the supply unit 14a without leakage (Yes in step S205), the supply control unit 14c. Controls the supply unit 14a to restart the supply of encoded data (step S206).

Subsequently, the consumption monitoring unit 14b determines in step S
The processing shown in 202 and S203 is restarted. That is, the consumption monitoring unit 14b monitors whether or not all the encoded data to be supplied from the storage unit 11 has been supplied, and the progress status of the processing by the decoder 12, and the decoder 12 causes the supply unit 14a to operate. It is repeatedly determined whether or not it is possible to input and process the sequentially supplied data without leakage (steps S202 and S2).
03).

In this way, the video server 10 repeats the processing shown in steps S202 to S206, and finally it is determined that all the encoded data to be supplied from the storage unit 11 has been supplied. And (step S20
2), the supply process of the encoded data by the supply unit 14a ends (step S207).

As described above, according to the present embodiment, the video server 10 includes the decoder 12 having the same functional configuration as each of the decoders 20, and the encoded data for the decoder 12 and each decoder 20. Are sequentially supplied at the same timing, and further, the supply unit 14a is provided according to the progress status of the processing by the decoder 12.
Since the data supply is controlled by the above method, the data can be supplied to each decoder 20 easily and accurately.

(Other Embodiments) The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and the scope of the technical idea described in the above claims is not limited thereto. It may be implemented in various different embodiments.

For example, in the present embodiment, the decoder 12 of the video server 10 determines whether or not the data can be input and processed without leaking the data so that the data supplied by the supply unit 14a can be processed. Although the case of controlling the supply has been described, the present invention is not limited to this, and as long as the progress of the processing by the decoder 12 is monitored, for example, the speed of the decoding processing by the decoder 12 and the decoding processing The same can be applied when monitoring all parameters such as results.

Further, in the present embodiment, the video server 1
Although the case where 0 has one decoder 12 has been described, the present invention is not limited to this, and can be similarly applied to the case where there are a plurality of decoders having different input speeds and processing speeds. That is, when the input speed and the processing speed of each decoder 20 connected to the network 1 are different, the video server 10 determines that each decoder 20
, Each of which has a plurality of decoders corresponding to the input speed and the processing speed, monitors the progress of processing by each decoder, and controls the supply of data to each decoder 20 connected to the network 1. .

Further, in the present embodiment, the video server 1
Although the case where 0 supplies the encoded data to the plurality of decoders 20 has been described, the present invention is not limited to this, and the video server 10 supplies the encoded data to one decoder 20. The same can be applied to the case.

In the present embodiment, the video server 1
0 has the storage unit 11, and the case where the data stored in the storage unit 11 is supplied has been described, but the present invention is not limited to this, and the data is sequentially received from the outside of the video server 10. Then, the same can be applied to a case where the sequentially received data is supplied to the decoder 12 and each decoder 20 while being buffered.

Further, in the present embodiment, the video server 1
0 has the decoder 12 having the same functional configuration as each decoder 20 as the data processing device, but the present invention is not limited to this, and the same as the decoder 20 as the data processing device. If it does not have the same functional configuration as long as it executes predetermined processing while sequentially inputting data at the input speed and processing speed of
The same can be applied to the case where a process different from that of the data processing device (decoder 20) is executed.

Further, although the case where the encoded data is supplied to the decoder 20 as the data processing device has been described in the present embodiment, the present invention is not limited to this, and, for example, an image or a text is used. For example, in the case of providing print data to a printer that executes a process of expanding print data while sequentially inputting print data, etc., for all data processing devices that perform a predetermined process while sequentially inputting predetermined data The same can be applied to the case where the data is provided by the user.

Further, of the processes described in the present embodiment, all or part of the processes described as being automatically performed can be manually performed, or can be manually performed. All or part of the described processing can be automatically performed by a known method. In addition, the processing procedures, control procedures, specific names, and information including various data and parameters shown in the above-mentioned documents and drawings can be arbitrarily changed unless otherwise specified.

Further, each component of each device shown in the drawings is functionally conceptual, and does not necessarily have to be physically configured as shown. That is, the distribution of each device
The specific form of integration is not limited to that shown in the drawings, and all or part of the integration may be functionally or physically distributed / integrated in arbitrary units according to various loads and usage conditions. it can. Furthermore, all or arbitrary parts of the processing functions performed by each device may be realized by a CPU and a program that is analyzed and executed by the CPU, or may be realized as hardware by a wired logic.

The data supply method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program can be distributed via a network such as the Internet. Also, this program
Hard disk, flexible disk (FD), CD
It can also be executed by being recorded in a computer-readable recording medium such as ROM, MO, and DVD, and being read from the recording medium by the computer.

[0063]

As described above, according to the first aspect of the invention, the processing means has a predetermined input speed and a processing speed similar to the input speed and the processing speed of the data processing device while sequentially inputting the data. The supply means sequentially supplies data to the data processing device and the processing means at the same timing, and the control means supplies the data by the supply means according to the progress status of the processing by the processing means. Therefore, the data supply device capable of supplying data to the data processing device easily and accurately can be obtained.

According to the second aspect of the present invention, is it possible to monitor the progress of the processing by the processing means and input and process the data sequentially supplied by the supply means without leakage? If it is determined that it is impossible to input and process the data without leaking it, the supply means is controlled to stop the supply of the data and the data is not leaked. If it is determined that the data can be input and processed, the supply means is controlled to continue or restart the supply of the data, so the processing means inputs the data without leaking it. There is an effect that a data supply device capable of accurately supplying data to the data processing device can be obtained by simply monitoring whether or not the data processing can be performed.

Further, according to the invention of claim 3, the processing means executes the same processing as the processing executed by the data processing apparatus, so that the data processing apparatus itself can be adopted as the processing means. An effect that a possible data supply device can be obtained is obtained.

Further, according to the invention of claim 4, the data processing device executes the decoding process while sequentially inputting the encoded stream consisting of a series of encoded data,
Since the supply means sequentially supplies the encoded stream, when the encoded data is supplied from the so-called video server to the decoder, the data can be easily and accurately supplied to the decoder. There is an effect that a different data supply device can be obtained.

Further, according to the invention of claim 5, a processing unit for executing a predetermined process while sequentially inputting data at an input speed and a processing speed similar to the input speed and the processing speed of the data processing device, and the data. The data is sequentially supplied to the processing device at the same timing, and the data supply is controlled according to the progress of processing by the processing unit. It is possible to obtain the data supply method capable of supplying the data.

Further, according to the invention of claim 6, a processing section for executing a predetermined process while sequentially inputting data at an input speed and a processing speed similar to the input speed and the processing speed of the data processing device, and the data. The data is sequentially supplied to the processing device at the same timing, and the data supply is controlled according to the progress of processing by the processing unit. It is possible to obtain a program capable of supplying

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an overall configuration of a data supply system using a video server according to the present embodiment.

2 is a flowchart showing a procedure of data supply processing by the video server shown in FIG.

FIG. 3 is a system configuration diagram showing an overall configuration of a data supply system according to a conventional technique.

FIG. 4 is a block diagram showing a configuration example of the data supply device shown in FIG.

[Explanation of symbols]

1 network 10 video servers 11 Memory 12 decoder 13 Communication control IF unit 14 Control unit 14a supply unit 14b Consumption monitoring unit 14c Supply control unit 20 decoder

Continued front page    (72) Inventor Koki Kanasaka             10-1 Minamikurokawa, Aso-ku, Kawasaki City, Kanagawa Prefecture             Ceremony company LSI Systems F-term (reference) 5C053 FA23 GA11 GB37 LA15                 5C064 BA07 BB05 BC10 BC18 BC20                       BD02 BD08

Claims (6)

[Claims] 1. A data supply device for sequentially supplying the data via a network to a data processing device that executes a predetermined process while sequentially inputting predetermined data, the input speed of the data processing device. And a processing unit that executes a predetermined process while sequentially inputting the data at an input speed and a processing speed similar to the processing speed, and sequentially supplies the data to the data processing device and the processing unit at the same timing. A data supply device comprising: a supply unit; and a control unit that controls the supply of data by the supply unit according to the progress status of processing by the processing unit. 2. The control means monitors the progress of the processing by the processing means, and determines whether or not it is possible to input and process the data sequentially supplied by the supply means without leakage. When it is determined by the monitoring means that the data cannot be input without being leaked and processed by the monitoring means, the supply means is configured to stop the supply of the data. If the control means determines that the data can be input and processed without being leaked by the monitoring means, the supply means for controlling the supply means to continue or restart the supply of the data. The data supply device according to claim 1, further comprising: control means. 3. The data supply device according to claim 1, wherein the processing unit executes the same process as the process executed by the data processing device. 4. The data processing device executes a decoding process while sequentially inputting an encoded stream composed of a series of encoded data, wherein the supplying means sequentially supplies the encoded stream. The data supply device according to claim 1, 2, or 3. 5. A data supply method for sequentially supplying the data via a network to a data processing apparatus that executes predetermined processing while sequentially inputting predetermined data, the input speed of the data processing apparatus. And a supply step of sequentially supplying the data at a similar timing to a processing unit that sequentially inputs the data and executes a predetermined process at the same input speed and processing speed as the processing speed, and the data processing device. And a control step of controlling the supply of data by the supply step in accordance with the progress status of the processing by the processing section. 6. A program for causing a computer to execute a data supply method of sequentially supplying the data via a network to a data processing device that executes predetermined processing while sequentially inputting predetermined data, the program comprising: A processing unit that executes a predetermined process while sequentially inputting the data at an input speed and a processing speed similar to the input speed and the processing speed of the data processing device, and the same timing of the data to the data processing device. And a control step of controlling the supply of data by the supply step according to the progress status of the processing by the processing unit.