JP2004355792A - Data processing device, data processing method, program, and program recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data processing device which can realize simultaneous execution of a plurality of data processing with high transfer rate use efficiency, and a data processing method. <P>SOLUTION: When a transfer rate required for a plurality of data processing to be executed simultaneously exceeds the maximum transfer rate (y) of a recording medium 13, a transfer control part 16 selects data processing having low priority, and changes allocation of a transfer rate of the selected data processing in a range in which a required transfer rate (x) is within the maximum transfer rate (y). The changed transfer rate is informed to a data write-in part 12 or a data read-out part 14, and write-in processing or read-out processing for the recording medium 13 is executed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a data processing device, a data processing method, a program, and a program recording medium, and more specifically, to record / reproduce digital data on / from a recording medium such as a semiconductor memory, an optical disk, a magnetic disk, or a magneto-optical disk. The present invention relates to a data processing device, a data processing method, a program for executing the method, and a medium on which the program is recorded.

  At present, various types of data processing devices for recording / reproducing digital data on / from recording media such as semiconductor memories, optical disks, magnetic disks, and magneto-optical disks have been commercialized. For example, data processing devices that record / reproduce digital video and digital audio include digital video tape recorders, digital hard disk recorders, DVD video disk recorders, and BD video disk recorders. Hereinafter, an outline of the data processing device will be described.

  FIG. 15 is a block diagram showing a schematic configuration of a general conventional data processing apparatus 100 for recording / reproducing digital data. The conventional data processing device 100 shown in FIG. 15 includes a digital data input unit 101, a data writing unit 102, a recording medium 103, a data reading unit 104, and a digital data output unit 105.

  The digital data input to the digital data input unit 101 is converted by the data writing unit 102 in accordance with the format of the recording medium 103, and is then recorded on the recording medium 103. The digital data recorded on the recording medium 103 is read by the data reading unit 104 and output from the digital data output unit 105.

  On the other hand, when the input data is analog data, recording / reproduction of digital data is performed through a process of converting from analog to digital. FIG. 16 is a block diagram showing a schematic configuration of a general conventional data processing device 110 for inputting analog data. The conventional data processing device 110 shown in FIG. 16 has a configuration in which an analog data input unit 106, an encoder unit 107, a decoder unit 108, and an analog data output unit 109 are further added to the conventional data processing device 100 shown in FIG. .

  The analog data input to the analog data input unit 106 is converted into digital data by the encoder unit 107 and then input to the digital data input unit 101. The digital data output from the digital data output unit 105 is converted into analog data by the decoder unit 108 and then output from the analog data output unit 109.

  Now, with the recent technological development, a data processing device equipped with a function capable of simultaneously performing data recording and data reproduction (for example, a chasing reproduction function) has appeared in order to further improve user convenience. In such a data processing apparatus, a simultaneous recording / reproducing function of data is realized by using the following technology (see Patent Document 1).

Usually, the maximum transfer rate at which the recording medium can be accessed at one time, that is, the maximum amount of data per unit time that can be written to or read from the recording medium is limited by the performance of the recording medium. Therefore, when performing a plurality of data processes at the same time, the sum of the transfer rates used by each data process must not exceed the maximum transfer rate. For this reason, in the data processing device that realizes the simultaneous recording / reproducing function of data, a transfer rate usable for data recording and a transfer rate usable for data reproduction are fixedly allocated in advance within the range of the maximum transfer rate. Have done that. For example, if the maximum transfer rate is 50 Mbps, a transfer rate of 25 Mbps is assigned for data recording and a transfer rate of 25 Mbps is assigned for data reproduction.
JP-A-11-110916

  However, in the above-described fixed transfer rate assignment method performed by the conventional data processing apparatus, there is a problem that the maximum transfer rate of the recording medium cannot be effectively used when simultaneous recording and reproduction are not performed. In the above-described example, even when only data recording is performed, the transfer rate of 25 Mbps assigned to data recording is the upper limit of the usable rate, so that the remaining transfer rate of 25 Mbps cannot be used. Therefore, in this case, the transfer rate utilization efficiency is significantly reduced to 50%.

  Therefore, an object of the present invention is to dynamically change a transfer rate assigned to each data processing according to the number of data processings to be executed at the same time, thereby simultaneously executing a plurality of data processings at a high transfer rate utilization efficiency. It is an object of the present invention to provide a data processing device and a data processing method which can be realized by the above.

  The present invention is directed to a data processing device that performs a process of recording digital data on a recording medium and / or a process of reproducing digital data from the recording medium. To achieve the above object, a data processing device according to the present invention includes a data reception unit, a transfer rate control unit, and a data processing execution unit.

  The data receiving unit can receive a plurality of data processes. The transfer rate control unit controls the plurality of data processing units so that the total transfer rate per unit time assigned to each of the plurality of data processes received by the data reception unit does not exceed the maximum transfer rate that the recording medium can process per unit time. Controls the assignment of transfer rates for data processing. The data processing execution unit simultaneously executes a plurality of data processes on the recording medium according to the transfer rate assigned by the transfer rate control unit.

  Typically, the transfer rate control unit, when the total transfer rate of the plurality of data processing exceeds the maximum transfer rate due to the new data processing received by the data receiving unit, at least one of the plurality of data processing Limit the transfer rate of processing. The data processing for limiting the transfer rate may be determined based on a preset priority.

  Further, when the data processing for limiting the transfer rate is a dubbing process performed by recording data reproduced from the recording medium on the recording medium again, the transfer rate control unit may control the transfer rate during the dubbing reproduction. And the transfer rate during dubbing recording may be limited to the same value or different values. The data processing for limiting the transfer rate may be determined based on a preset priority.

  The transfer rate is limited to a different value by temporarily writing digital data reproduced from the recording medium by the data processing execution unit at the reproduced first transfer rate, and performing the second transfer different from the first transfer rate. This can be performed using a buffer that reads data at a rate and re-inputs it to the data processing execution unit. Alternatively, a decoder unit for converting digital data reproduced from a recording medium by the data processing execution unit to analog data reproduced at a first transfer rate, and converting the analog data converted by the decoder unit to a first transfer rate It can also be performed by using an encoder unit that converts the digital data into digital data at a second transfer rate different from the above and re-inputs it to the data processing execution unit.

  When any data processing is completed, the transfer rate control unit may release some or all restrictions on the data processing that limits the transfer rate. The data processing for releasing the restriction may be determined based on a preset priority.

  When the transfer rate is limited, the transfer rate control unit can calculate the remaining time until the processing is completed for the data processing with the limited transfer rate, and present it to the user.

  Further, the present invention is also directed to a data processing method for performing a process of recording digital data on a recording medium and / or a process of reproducing digital data from the recording medium. In order to achieve the above object, the data processing method of the present invention includes a receiving step of receiving data processing, and a total of a transfer rate per unit time required for each of the plurality of data processings received in the receiving step. A calculating step of calculating, and a control step of controlling assignment of transfer rates to a plurality of data processes such that the total transfer rate calculated in the calculating step does not exceed a maximum transfer rate that the recording medium can process per unit time. And an execution step of simultaneously executing a plurality of data processes on the recording medium according to the transfer rate assigned in the control step.

  Typically, the above-described data processing method is provided in the form of a program for causing a computer to execute a series of processing procedures. This program may be introduced into a computer in a form recorded on a computer-readable recording medium.

  As described above, according to the present invention, the transfer rate assigned to each data process is dynamically changed so that the total transfer rate used by a plurality of data processes falls within the range of the maximum transfer rate of the recording medium. I do. Thereby, even if a new data process that exceeds the maximum transfer rate of the recording medium occurs during a certain data process, both data processes can be executed simultaneously. For data processing in which the transfer rate has been temporarily reduced due to simultaneous processing, the transfer rate is automatically restored as soon as the transfer rate can be assigned. Therefore, higher quality digital data can be recorded.

(1st Embodiment)
FIG. 1 is a block diagram illustrating a configuration of a data processing device 1 according to the first embodiment of the present invention. 1, a data processing device 1 according to the first embodiment includes a digital data input unit 11, a data writing unit 12, a recording medium 13, a data reading unit 14, a digital data output unit 15, a transfer rate And a control unit 16. The digital data input unit 11 and the digital data output unit 15 constitute a data receiving unit. The data writing unit 12 and the data reading unit 14 constitute a data processing execution unit.
First, an outline of each configuration of the data processing device 1 according to the first embodiment will be described below.

  The digital data input unit 11 inputs digital data to be recorded and information such as a file name and recording quality (bit rate) related to the digital data in response to a recording request given by a user or the like. Then, the digital data input unit 11 instructs the data writing unit 12 to record digital data. When receiving a recording instruction from the digital data input unit 11, the data writing unit 12 writes digital data on the recording medium 13 under the control of the transfer rate control unit 16. The data writing unit 12 can simultaneously write a plurality of digital data.

  The digital data output unit 15 inputs information such as a file name of digital data to be reproduced in response to a reproduction request given by a user or the like. Then, the digital data output unit 15 instructs the data reading unit 14 to reproduce the digital data. When receiving a reproduction instruction from the digital data output unit 15, the data reading unit 14 reads digital data from the recording medium 13 under the control of the transfer rate control unit 16. The digital data output unit 15 outputs the digital data read (reproduced) by the data read unit 14. The data reading unit 14 can simultaneously read and process a plurality of digital data.

  The recording medium 13 is a medium that can record digital data such as video and audio, and is, for example, a hard disk (HDD), a flash memory, a DVD medium, and a BD medium. In the recording medium 13, as shown in FIG. 2, the recorded digital data is managed as a data file, and a management information file relating to the digital data is recorded in association with the data file. The management information file includes, for example, a data file name of digital data, a content name, a data size, a recording bit rate, and the like. This recording medium 13 may be composed of one medium, or may be composed of a plurality of media.

  The transfer rate control unit 16 performs control for optimally allocating a transfer rate (an amount of data transferred per unit time) used in the recording processing and the reproduction processing. This control is performed based on information on the status of all recording processing and reproduction processing executed by the data processing device and information on the maximum transfer rate that can access the recording medium 13 at one time. FIG. 3 is a diagram illustrating an example in which the transfer rate control unit 16 holds such information in the form of a management table. The management table in FIG. 3 includes a table that holds the maximum transfer rate of the recording medium 13 and a table that holds the transfer rate requested and the assigned transfer rate for the recording process and the reproduction process (process type) being executed. Be composed. In the example of FIG. 3, the total transfer rate of the recording 1, the reproduction 1 and the recording 2 where the total transfer rate requested for the HDD is 65 Mbps is equal to or less than the maximum transfer rate of the recording medium 13 of 50 Mbps. In this example, the transfer rate of the recording 2 is assigned a small value. FIG. 4 is a diagram illustrating an example of a priority determination table and a processing determination table used by the transfer rate control unit 16 for priority determination. In this priority determination table, information indicating which process is to be prioritized and the transfer rate is allocated is registered. In the example of FIG. 4, the priority is given in the order of the shaded recording processing, the reservation recording processing, and the processing requested later. It should be noted that which of the reference 1 and the reference 2 is set is determined by the specifications of the apparatus. In the process determination table, information is set which indicates whether or not the transfer rate assignment should be changed for the process selected by the priority determination.

  Hereinafter, the data processing method performed by the data processing device of the present invention will be described in detail with reference to FIGS. FIG. 5 is a flowchart illustrating a procedure of a control process performed by the transfer rate control unit 16. FIG. 6 and FIG. 7 are diagrams exemplifying transfer rate states when a plurality of processes are executed.

  The processing in FIG. 5 includes an inquiry from the data writing unit 12 based on a recording instruction, an inquiry from the data reading unit 14 based on a reproduction instruction, a notification of the completion of the recording process from the data writing unit 12, or a reproduction from the data reading unit 14. The process is started when the transfer rate control unit 16 receives one of the processing completion notifications.

  The transfer rate control unit 16 compares the transfer rate x required for the recording process and / or the reproduction process to be executed with the maximum transfer rate y of the recording medium 13 (step S501). Here, the required transfer rate x, when received an inquiry, is the sum of the transfer rate assigned to the process registered in the management table and the transfer rate requested by the inquiry. When the transfer rate is received, the transfer rate is obtained by removing the transfer rate assigned to the completed processing from the transfer rate assigned to the processing registered in the management table. The transfer rate requested by the inquiry about the reproduction process is given by the recording bit rate in the management information file recorded on the recording medium 13.

  As a result of the comparison in step S501, when the required transfer rate x matches the maximum transfer rate y (only at the time of inquiry), the transfer rate control unit 16 allocates the transfer rate requested by the inquiry as it is to the management table. It is registered (x = y in step S501 and step S506). For example, at the time of transition from the first period to the second period in FIG. The shaded rectangles in FIG. 6 represent the transfer rate per unit time. Then, the transfer rate control unit 16 responds to the inquiring data writing unit 12 or the data reading unit 14 that the requested transfer rate has been allocated. The contents of this response are also transmitted to the digital data input unit 11 or the digital data output unit 15.

  Also, as a result of the comparison in step S501, if the required transfer rate x exceeds the maximum transfer rate y (only at the time of inquiry), the transfer rate control unit 16 performs priority determination (x> y in step S501 and step S503). This priority determination is performed to determine data processing that can be assigned at a transfer rate different from the requested transfer rate in order to keep the required transfer rate x within the maximum transfer rate y. The transfer rate control unit 16 refers to the priority determination table and selects the data processing with the lowest priority. For example, if the reproduction process and the manual recording process have already been executed, and the reproduction process has been started first, the reproduction process has the lowest priority according to the priority determination table illustrated in FIG. Is selected as Then, the transfer rate control unit 16 refers to the processing determination table and determines whether or not the transfer rate allocation of the selected data processing can be changed so that the required transfer rate x falls within the maximum transfer rate y. (Step S505). For example, in the example of FIG. 4, since the reproduction processing is set to change the transfer rate for reproduction, it is determined that the reproduction can be changed.

  If the allocation cannot be changed in step S505, the transfer rate control unit 16 responds to the inquiring data writing unit 12 or the data reading unit 14 that the requested data processing cannot be executed. On the other hand, if the assignment can be changed, the transfer rate control unit 16 changes the transfer rate assigned to the selected data processing and updates and registers it in the management table (step S506). For example, at the time of transition from the first period to the second period in FIG. In FIG. 7, since the two data processes are the same recording process, the later data process is prioritized and the assignment of the earlier data process is changed. Then, the transfer rate control unit 16 responds to the inquiry to the data writing unit 12 or the data reading unit 14 that the transfer rate of the selected data processing has been changed. The contents of this response are also transmitted to the digital data input unit 11 or the digital data output unit 15.

  Also, as a result of the comparison in step S501, if the required transfer rate x is less than the maximum transfer rate y, the transfer rate control unit 16 is assigned at a rate different from the requested transfer rate in the currently executed data processing. It is determined whether or not there is any data processing (x <y in step S501 and step S502). If there is no data processing assigned at a different rate, the transfer rate control unit 16 assigns the transfer rate requested by the inquiry as it is, or deletes the registration of the completed data processing and registers it in the management table ( Step S506). For example, at the time of transition from the second period to the third period in FIG. On the other hand, when there is data processing assigned at a different rate, the transfer rate control unit 16 performs a priority determination regarding the data processing (step S504). The transfer rate control unit 16 refers to the priority determination table and determines whether to change the transfer rate assigned to the data processing. For example, if the priority is higher than the predetermined level, it is determined that the priority should be changed. When the transfer rate should be changed, the transfer rate control unit 16 changes the transfer rate assigned to this data processing and updates and registers it in the management table within a range in which the sum of the necessary transfer rates x falls within the maximum transfer rate y ( Step S506). This is a transition from the second period to the third period in FIG. Then, the transfer rate control unit 16 responds to the data writing unit 12 or the data reading unit 14 that has inquired or notified that the transfer rate of the data processing has been changed. The contents of this response are also transmitted to the digital data input unit 11 or the digital data output unit 15.

  As described above, according to the data processing device according to the first embodiment of the present invention, each of the transfer rates used by a plurality of data processes is set to fall within the range of the maximum transfer rate of the recording medium. Dynamically change the transfer rate assigned to data processing. Thereby, even if a new data process that exceeds the maximum transfer rate of the recording medium occurs during a certain data process, both data processes can be executed simultaneously. For data processing in which the transfer rate has been temporarily reduced due to simultaneous processing, the transfer rate is automatically restored as soon as the transfer rate can be assigned. Therefore, higher quality digital data can be recorded.

  In the first embodiment, the case where the transfer rate to be assigned to each data processing is determined with the upper limit of 100% of the maximum transfer rate of the recording medium. However, depending on the device, a delay in reading and writing may occur due to an access error or the like. Therefore, in order to cope with such a case, the transfer rate to be assigned to each data processing may be determined with an upper limit of a numerical value (90%, 80%, or the like) equal to or less than the maximum transfer rate of the recording medium.

(Second embodiment)
In the first embodiment, a case has been described in which the plurality of data processes for controlling the assignment of the transfer rate are either the recording process or the reproduction process. In the following second embodiment, transfer rate allocation control in the case where dubbing processing is added to data processing will be described. The dubbing process is a data process in which the reproduction process and the recording process are performed integrally.

  FIG. 8 is a block diagram showing a configuration of the data processing device 2 according to the second embodiment of the present invention. 8, the data processing device 2 according to the second embodiment includes a digital data input unit 21, a data writing unit 12, a recording medium 13, a data reading unit 14, a digital data output unit 25, a transfer rate A control unit 26 and a dubbing control unit 27 are provided. The digital data input unit 21 and the digital data output unit 25 constitute a data reception unit. As shown in FIG. 8, the data processing device 2 according to the second embodiment includes a data processing device 1 according to the first embodiment, a digital data input unit 21, a digital data output unit 25, and a transfer rate control unit. 26 and the dubbing control unit 27 are different. Hereinafter, the data processing device 2 according to the second embodiment will be described focusing on this different configuration.

  The transfer rate control unit 26 performs control to optimally assign a transfer rate used in the recording processing, the reproduction processing, and the dubbing processing. This control is performed based on information on the status of all recording processing, reproduction processing, and dubbing processing executed by the data processing device, and information on the maximum transfer rate that can access the recording medium 13 at one time. . FIG. 9 is a diagram illustrating an example in which the transfer rate control unit 26 holds such information in the form of a management table. The information stored in this management table is as described in FIG. In the example of FIG. 9, the total transfer rate of the recording 1, reproduction 1 and dubbing 1 in which the total transfer rate requested for the HDD is 65 Mbps is equal to or less than the maximum transfer rate of the recording medium 13 of 50 Mbps. In this example, the transfer rate of dubbing 1 is assigned a small value. FIG. 10 is a diagram illustrating an example of a priority determination table and a processing determination table used by the transfer rate control unit 26 for priority determination. The information stored in each table is as described in FIG.

  The dubbing control unit 27 inputs digital data read from the recording medium 13 via the data reading unit 14 and the digital data output unit 25 at the read transfer rate A, and inputs the digital data at a predetermined transfer rate B. 21. The predetermined transfer rate B is determined by assignment control performed by the transfer rate control unit 26. The conversion from the transfer rate A to the transfer rate B may be performed on digital data or may be performed on analog data. In the former case, a digital buffer or the like capable of reducing the amount of digital data by recompression processing or thinning processing may be used. In the latter case, it is easy to use the dubbing control unit 27 having the configuration illustrated in FIG. The dubbing control unit 27 in FIG. 11 includes a decoder unit 271, an encoder unit 272, and a dubbing buffer 273. The digital data output from the digital data output unit 25 is input to the dubbing buffer 273, and is converted into analog data at the transfer rate A in the decoder unit 271. The converted analog data is converted again into digital data at the transfer rate B in the encoder unit 272. The reconverted digital data is output to the digital data input unit 21 via the dubbing buffer 273.

  Next, the control performed by the transfer rate control unit 26 will be described in detail with reference to FIGS. FIG. 12 is a diagram illustrating a state of the transfer rate when a new data processing exceeding the maximum transfer rate y of the recording medium 13 is requested during the dubbing processing. FIG. 12 shows an example of a normal dubbing process that does not involve the conversion of digital data, in which the reproduction transfer rate and the recording transfer rate are the same.

  Upon receiving an inquiry about a new data process from the data writing unit 12, the transfer rate control unit 26 determines the transfer rate x necessary for the dubbing process being performed and the new data process, and the maximum transfer rate y of the recording medium 13. A comparison is made (step S501). As a result of the comparison, since the required transfer rate x exceeds the maximum transfer rate y, the transfer rate control unit 26 performs a priority determination (x> y in step S501 and step S503). In the example of FIG. 10, since the priority of the dubbing process is the lowest and the change of the transfer rate of the dubbing process is permitted, the transfer rate control unit 26 assigns the transfer rate of the dubbing process to the required transfer rate x Is changed so as to fall within the maximum transfer rate y (step S505). For example, at the time of transition from the first period to the second period in FIG. Basically, the transfer rate control unit 26 changes the transfer rate in association with both dubbing reproduction and dubbing recording accompanying the dubbing process. Therefore, in this case, the transfer rate z required for new data processing is subtracted from the maximum transfer rate y, and 1/2 of the remaining transfer rate is set as the transfer rate C for both dubbing reproduction and dubbing recording. (C = (yz) / 2).

  By performing the above-described assignment processing, dubbing processing and other data processing can be performed simultaneously. However, in the dubbing process in which the transfer rate is reduced, although the quality of the dubbing data is maintained, it takes more time to complete the dubbing than usual because of the longer transfer time. Therefore, in the second embodiment, when the transfer rate of the dubbing process is changed, a mechanism is provided for notifying the user of the remaining time until the completion of the dubbing process. Hereinafter, this mechanism will be described.

  FIG. 13 is a block diagram showing a configuration for realizing a mechanism for notifying the user of the remaining time until the completion of dubbing. In FIG. 13, a configuration for realizing this mechanism includes a transfer rate measurement unit 261, a rate change determination unit 262, a rate change instruction unit 263, a remaining time measurement unit 264, a priority instruction input unit 265, and a remaining time notification unit 266. Be composed. The transfer rate measurement unit 261, the rate change determination unit 262, the rate change instruction unit 263, and the remaining time measurement unit 264 are configured inside the transfer rate control unit 26.

  The transfer rate measuring unit 261 inputs a transfer rate of each data processing to be executed. The rate change determination unit 262 determines data processing for changing the transfer rate with reference to the management table, the priority determination table, and the processing determination table. An instruction for data processing to be prioritized by a user or the like can be input via the priority instruction input unit 265. Therefore, data processing for changing the transfer rate may be determined based on an instruction directly input from the priority instruction input unit 265 without using the priority determination table and the processing determination table. The rate change instructing unit 263 instructs the data writing unit 12 and the data reading unit 14 on the data processing and the transfer rate determined by the rate change determining unit 262. In the case of the dubbing process, the remaining time measuring unit 264 obtains the total amount of digital data to be dubbed, and divides the total amount by the assigned transfer rate to obtain the remaining time until the completion of dubbing. The obtained remaining time is presented to the user via the remaining time notification unit 266.

As described above, according to the data processing device according to the second embodiment of the present invention, even when dubbing processing is executed, it is possible to simultaneously execute a plurality of data processing.
The data processing executed simultaneously with the dubbing processing may be any of a recording processing, a reproduction processing, and another dubbing processing. The instruction input from the priority instruction input unit 265 is not limited to the time when a data processing request is generated, and may be performed as needed when necessary. These instructions may be explicitly performed by a remote controller or the like, or may be performed at the time of setting for reservation recording or the like. Further, the notification of the remaining time can be applied not only to the remaining time until the completion of dubbing, but also to the remaining time until the completion of recording or reproduction. Further, the notification to the user may be made not only about the remaining time but also about the fact that the transfer rate has been changed. As a method of notifying the user, a method such as display on a screen, display on a front panel of the apparatus, and voice guidance can be considered.

(Third embodiment)
In the first and second embodiments, the case where the input data is digital data has been described. However, each embodiment is further provided with the following configuration, so that input of analog data can be supported. FIG. 14 is a block diagram showing a configuration of a data processing device 3 in which the data processing device 1 of FIG. 1 is configured to handle analog data. As shown in FIG. 14, in order to support analog data, an analog data input unit 31 and an encoder unit 32 are provided before the digital data input unit 11, and a decoder unit 33 and an analog data output unit are provided after the digital data output unit 15. What is necessary is just to provide each part 34.

Analog data is input to the analog data input unit 31. The encoder unit 32 converts analog data input to the analog data input unit 31 into digital data. The changed digital data is input to the digital data input unit 11. On the other hand, the decoder unit 33 converts digital data output from the digital data output unit 15 into analog data. The converted analog data is output via the analog data output unit 34.
With this configuration, the data processing method of the present invention can be applied to analog data. The same applies to the data processing device 2 in FIG.

  Typically, the data processing method executed by the data processing device described in the first to third embodiments can execute the above-described processing procedure stored in a storage device (ROM, RAM, hard disk, or the like). Such predetermined program data is realized by being interpreted and executed by the CPU. In this case, the program data may be introduced into the storage device via a recording medium such as a CD-ROM or a flexible disk, or may be executed directly from the recording medium.

  INDUSTRIAL APPLICABILITY The present invention can be used when recording / reproducing digital data to / from a storage medium, and is particularly suitable for a case where a plurality of data processes are to be executed simultaneously with high transfer rate utilization efficiency.

FIG. 1 is a block diagram showing a configuration of a data processing device 1 according to a first embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a data recording method on a recording medium 13. FIG. 3 is a diagram illustrating an example of a management table held by a transfer rate control unit 16. FIG. 4 is a diagram illustrating an example of a priority determination table and a processing determination table held by a transfer rate control unit 16; 5 is a flowchart for explaining a procedure of a control process performed by the transfer rate control unit 16. A diagram illustrating a state of a transfer rate when a plurality of processes are executed. A diagram illustrating a state of a transfer rate when a plurality of processes are executed. FIG. 2 is a block diagram showing a configuration of a data processing device 2 according to a second embodiment of the present invention. FIG. 4 is a diagram illustrating an example of a management table held by a transfer rate control unit 26. FIG. 4 is a diagram illustrating an example of a priority determination table and a processing determination table held by a transfer rate control unit 26. FIG. 2 is a block diagram showing a detailed configuration example of the dubbing control unit 27. A diagram illustrating a state of a transfer rate when a plurality of processes are executed. FIG. 2 is a block diagram showing a configuration for realizing a mechanism for notifying a user of a remaining time until dubbing is completed. FIG. 4 is a block diagram showing a configuration of a data processing device 3 according to a third embodiment of the present invention. FIG. 2 is a block diagram showing a configuration of a conventional data processing device 100. FIG. 2 is a block diagram showing a configuration of a conventional data processing device 110.

Explanation of reference numerals

1 to 3, 100, 110 Data processing device 11, 21, 101 Digital data input unit 12, 102 Data writing unit 13, 103 Recording medium 14, 104 Data reading unit 15, 25, 105 Digital data output unit 16, 26 Transfer rate Control unit 27 Dubbing control unit 31, 106 Analog data input unit 32, 272, 107 Encoder unit 33, 271, 108 Decoder unit 34, 109 Analog data output unit 261 Transfer rate measurement unit 262 Rate change determination unit 263 Rate change instruction unit 264 Remaining time measurement unit 265 Priority instruction input unit 266 Remaining time notification unit 273 Dubbing buffer

Claims (21)

A data processing device that performs a recording process of digital data on a recording medium and / or a reproduction process of the recording medium,
A data receiving unit capable of receiving a plurality of data processes,
The transfer for the plurality of data processes is performed so that the total transfer rate per unit time assigned to each of the plurality of data processes received by the data receiving unit does not exceed the maximum transfer rate that the recording medium can process per unit time. A transfer rate control unit for controlling the rate assignment;
A data processing device, comprising: a data processing execution unit that simultaneously executes a plurality of data processes on the recording medium according to a transfer rate assigned by the transfer rate control unit.   The transfer rate control unit, when a total of the transfer rates of the plurality of data processes exceeds the maximum transfer rate by the new data process received by the data receiving unit, performs at least one of the plurality of data processes. The data processing device according to claim 1, wherein a transfer rate is limited. When the data processing for limiting the transfer rate is a dubbing processing executed by recording data reproduced from the recording medium on the recording medium again,
3. The data processing apparatus according to claim 2, wherein the transfer rate control unit limits a transfer rate during dubbing reproduction and a transfer rate during dubbing recording to the same value. When the data processing for limiting the transfer rate is a dubbing processing executed by recording data reproduced from the recording medium on the recording medium again,
3. The data processing apparatus according to claim 2, wherein the transfer rate control unit limits the transfer rate during dubbing reproduction and the transfer rate during dubbing recording to different values.   Digital data reproduced from the recording medium by the data processing execution unit is temporarily written at a reproduced first transfer rate, and read at a second transfer rate different from the first transfer rate to read the digital data. The data processing device according to claim 4, further comprising a buffer for re-input to the execution unit. A decoder for converting digital data reproduced from the recording medium by the data processing execution unit into analog data at a reproduced first transfer rate;
5. The encoder according to claim 4, further comprising: an encoder that converts the analog data converted by the decoder into digital data at a second transfer rate different from the first transfer rate and re-inputs the data to the data processing execution unit. A data processing device according to claim 1.   3. The data processing apparatus according to claim 2, wherein, when the arbitrary data processing is completed, the transfer rate control unit releases a part or all of the data processing that limits the transfer rate. .   4. The data processing apparatus according to claim 3, wherein when any data processing is completed, the transfer rate control unit releases a part or all of the data processing that limits the transfer rate. .   The data processing apparatus according to claim 4, wherein, when the arbitrary data processing is completed, the transfer rate control unit releases a part or all of the data processing that limits the transfer rate. .   The data processing apparatus according to claim 2, wherein the data processing for limiting the transfer rate is determined based on a preset priority.   4. The data processing apparatus according to claim 3, wherein the data processing for limiting the transfer rate is determined based on a priority set in advance.   The data processing apparatus according to claim 4, wherein the data processing for limiting the transfer rate is determined based on a priority set in advance.   The data processing apparatus according to claim 7, wherein the data processing for releasing the restriction is determined based on a preset priority.   The data processing apparatus according to claim 8, wherein the data processing for releasing the restriction is determined based on a preset priority.   The data processing apparatus according to claim 9, wherein the data processing for releasing the restriction is determined based on a preset priority.   3. The data processing apparatus according to claim 2, wherein the transfer rate control unit calculates a remaining time until the completion of the data processing with the transfer rate restricted, and presents the remaining time to a user.   4. The data processing apparatus according to claim 3, wherein the transfer rate control unit calculates a remaining time until the processing is completed for the data processing in which the transfer rate is limited, and presents the remaining time to a user.   The data processing apparatus according to claim 4, wherein the transfer rate control unit calculates a remaining time until the processing is completed for the data processing with the transfer rate limited, and presents the remaining time to a user. A data processing method for performing a recording process of digital data on a recording medium and / or a reproduction process of the recording medium,
A receiving step for receiving data processing;
A calculating step of calculating a total transfer rate per unit time required for each of the plurality of data processes received in the receiving step,
A control step of controlling the assignment of transfer rates to a plurality of data processes so that the total transfer rate calculated in the calculating step does not exceed the maximum transfer rate that the recording medium can process per unit time,
An execution step of simultaneously executing a plurality of data processes on the recording medium in accordance with the transfer rate assigned in the control step. A computer-readable program for causing a computer to execute a data processing method of performing a recording process of digital data on a recording medium and / or a reproduction process of the recording medium,
A receiving step for receiving data processing;
A calculating step of calculating a total transfer rate per unit time required for each of the plurality of data processes received in the receiving step,
A control step of controlling the assignment of transfer rates to a plurality of data processes so that the total transfer rate calculated in the calculating step does not exceed the maximum transfer rate that the recording medium can process per unit time,
An execution step of simultaneously executing a plurality of data processes on the recording medium in accordance with the transfer rate assigned in the control step. A recording medium recording a computer-readable program for causing a computer to execute a data processing method of performing a recording process of digital data on a recording medium and / or a reproduction process of the recording medium,
A receiving step for receiving data processing;
A calculating step of calculating a total transfer rate per unit time required for each of the plurality of data processes received in the receiving step,
A control step of controlling the assignment of transfer rates to a plurality of data processes so that the total transfer rate calculated in the calculating step does not exceed the maximum transfer rate that the recording medium can process per unit time,
An execution step of simultaneously executing a plurality of data processes on the recording medium according to the transfer rate assigned in the control step.

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