JPH09244926A - File recording / playback device - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To increase the access time when recording / reproducing a plurality of data files in an external storage device. A plurality of data files 2 to 4 are input to a control unit 5 via a communication device 1 and stored in an internal storage device 9. The internal storage device 9 holds the files 2 to 4 and the addresses assigned to these files 2 to 4 on the external storage device 10. The files 2 to 4 are stored in the external storage device 10 having a plurality of concentric tracks that rotate.
Is recorded in a track unit, or is reproduced in a track unit from the external storage device 10. [Effect] The external storage device 10 is no longer accessed on a file-by-file basis, and recording / playback time delay is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for recording or reproducing a plurality of file data on a plurality of rotating concentric tracks.

[0002]

2. Description of the Related Art As an external recording device such as a computer,
A rotating disk-shaped storage medium is used. This storage medium has a plurality of concentric circular tracks, data is recorded on the tracks, and the recorded data is reproduced (read). FIG. 6 is a schematic configuration diagram of an external storage device showing a conventional file recording / reproducing device.

In the figure, 7 is an external storage device, which has a rotating disk-shaped storage medium 15. The storage medium 15 has concentric tracks 16 and 17, and each track 1
6 and 17 are composed of 8 sectors. 27 is a first sector and 28 is a fourth sector. Data files 31 and 32 are stored in the external storage device 7 (hereinafter referred to as files). The size of the file 31 is 3 sectors, and the size of the file 32 is 4 sectors. Reference numeral 33 is a head that moves forward and backward with respect to the storage medium 15 to record and reproduce data.

The conventional file recording / reproducing apparatus is constructed as described above, and the data in the files 31 and 32 is recorded on the tracks 16 and 17 of the storage medium 15 via the head and reproduced from the tracks 16 and 17. It At this time, the tracks 16 and 17 are accessed in file units. Now, assuming that the file 31 is recorded in the external storage device 7, and the file 31 is recorded from the sector 27 of the track 16, the head 33 detects the position of the sector 27, and in the worst case, the head 16 is used for the track 16. I have to wait for one lap of time.

Further, assuming that the file 32 is continuously recorded and the file 32 is recorded from the sector 28 of the track 16, the head 33 detects the position of the sector 28, and in the worst case, the head 33 of the track 16 is detected. You have to wait for one lap.

[0006]

In the conventional file recording / reproducing apparatus as described above, a plurality of files 31, 32 are recorded / reproduced in / from the external storage device 7 having a plurality of rotating concentric tracks 16, 17. When doing so, since the external storage device 7 is accessed in file units, there is a problem that the execution speed is slow and the workability is poor.

Further, in the communication with the outside, when the content of the communication data is composed of a plurality of files, the external storage device 7 is accessed in file units, and therefore, when the data is recorded in the external storage device 7, There is a problem that a time delay occurs between the files and the communication means must be constructed in consideration of this time delay during communication, resulting in a slow communication speed.

The present invention has been made to solve the above-mentioned problems, and when recording / reproducing a plurality of files to / from an external storage device, it is possible to improve work efficiency and increase the communication speed with the outside. It is an object of the present invention to provide a file recording / reproducing device that is configured as described above.

[0009]

A file recording / reproducing apparatus according to a first aspect of the present invention records a file in an external storage device on a track-by-track basis or reproduces a file from the external storage device on a track-by-track basis. It is a thing.

Further, the file recording / reproducing apparatus according to the second invention stores the input file in the internal storage device, detects the free space of the recordable track of this file, and stores it in the internal storage device. The file is recorded in the external storage device in track units according to the free space.

A file recording / reproducing apparatus according to a third aspect of the present invention is the file recording / reproducing apparatus according to the second aspect of the invention, wherein the file recorded in track units in the external storage device is reproduced from the external storage device.

A file recording / reproducing apparatus according to a fourth aspect of the invention is a file recording / reproducing apparatus for transferring and recording a plurality of files from a first external storage device to a second external storage device.
The file to be copied stored in the external storage device is detected and stored in the internal storage device, and the recordable free space existing in the track of the second external storage device is detected and stored in the internal storage device. The file to be copied is recorded in track units in the second external storage device according to the free space.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. 1 and 2 show the first and second embodiments of the present invention.
1 is a diagram showing an embodiment of the invention, FIG. 1 is a block diagram,
FIG. 2 is a recording operation flowchart. Note that FIG. 6 is also used in the first embodiment.

In FIG. 1, 1 is a communication device for receiving files 2 to 4 and transmitting data, 5 is a control unit connected to the communication device 1, and is a current track 16 of a storage medium 15.
Free space detection unit 6 of the track for detecting the free space of 17
And a track remaining free space inspection unit 7 for inspecting the remaining free space of the tracks 16 and 17 at the time of recording the file.

Reference numeral 9 denotes an internal storage device connected to the control unit 5,
Reference numeral 10 denotes an external storage device shown in FIG. 6, which has a rotating disk-shaped storage medium 15, and the storage medium 15 has concentric circular tracks 16 and 17, and each track 16 and 17 has eight sectors. It consists of

Next, the recording operation of this embodiment will be described with reference to FIG. In step S1, the track free space detection unit 6 of the control unit 5 causes the storage medium 1 of the external storage device 10 to operate.
It is detected how much space is present in the tracks 16 and 17 of No. 5. Now, assuming that the communication device 1 receives the file 2, the received file 2 is stored in the internal storage device 9 in step S2. Similarly, file 3 and file 4
Are received from the communication device 1 and stored in the internal storage device 9.

When the files 2 to 4 are recorded on the tracks 16 and 17, the track remaining free space inspection section 7 inspects whether there is a remaining free space. That is, step S3
To determine if the free space will be exceeded. If there is free space, the process returns to step S2. If the free space is exceeded, the process proceeds to step S4, and files 2 to 4 are recorded in the free areas of tracks 16 and 17 up to the recordable portion. Therefore, the external storage device 10 is accessed only once for the tracks 16 and 17, and the recording execution speed is increased.

Here, step S2 constitutes first file storage means, and step S3 constitutes recordable capacity detection means.

Embodiment 2. FIG. 3 is a reproduction operation flowchart showing an embodiment of the third invention of the present invention.
1 and 6 are also used in the second embodiment. In this embodiment, a file recorded in the external storage device 10 is reproduced.

In step S11, all the sectors of the plural files 2 to 4 to be read are taken out, and in step S12, it is judged whether or not there is a sector to be read on the track.
If there is no sector to be read, the track is advanced by one in step S13 and the process returns to step S11. If there is a sector to be read, the process proceeds to step S14, and all sectors of the plurality of files 2 to 4 to be read on the track are read and stored in the internal storage device 9. Step S15
In step S11, it is determined whether all the sectors have been read. If not, the process returns to step S11. If they have been read, the process ends.

Here, step S14 constitutes the second file recording means, and step S15 constitutes the reproducing means.

Embodiment 3 FIG. 4 and 5 are views showing an embodiment of the fourth invention of the present invention, FIG. 4 is a block diagram, FIG. 5 is a copying operation flowchart, and the same portions as those of the first embodiment are designated by the same reference numerals. Show. Note that FIG. 6 is also used in the third embodiment.

In FIG. 4, 10A and 10B are external storage devices connected to the control unit 5, respectively, which are similar to the external storage device 10 of FIG. 1, and the external storage device 10A has files 21 on the same track. ~ 23 are recorded. In addition to the track free space detection unit 6 and the track remaining free space inspection unit 7, the control unit 5 includes a file detection unit 24 on a track.

Next, the external storage device 10 of this embodiment
The operation of copying the files 21 to 23 from A to the external storage device 10B will be described with reference to FIG. Step S21
Then, the file on-track detecting unit 24 detects the files 21 to 23 to be copied recorded on the track of the external storage device 10A, and stores all the files 21 to 23 in the internal storage device 9 in step S22. Let

Next, in step S1, the track free space detector 6 detects the free space of the track (for example, the track 16) of the external storage device 10B of the copy destination. When the files 21 to 23 are recorded on the track 16 of the external storage device 10B in step S2, the track remaining free space checking unit 7 checks whether or not there is remaining free space. Now, on track 16, all of files 21, 22 and file 2
If it is determined that there is a recordable area up to a portion of No. 3, the process proceeds to step S4, and the recordable portions of the files 21 and 22 and the file 23 stored in the internal storage device 9 are recorded in the track 16.

Here, step S21 constitutes a file recording means, and step S22 constitutes a recordable capacity detecting means.

[0027]

As described above, the first to third aspects of the present invention
According to the fourth aspect of the present invention, a plurality of files are recorded in a track unit in an external storage device having a plurality of rotating concentric tracks, or reproduced from the external storage device in a track unit. Since there is no need to access the file in units of files, it is possible to eliminate the time delay when recording or reproducing a plurality of files.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a recording operation flowchart showing the first embodiment of the present invention.

FIG. 3 is a reproduction operation flowchart showing a second embodiment of the present invention.

FIG. 4 is a block diagram showing a third embodiment of the present invention.

FIG. 5 is a copy operation flowchart showing a third embodiment of the present invention.

FIG. 6 is a schematic configuration diagram of an external storage device showing a file recording / reproducing device according to the related art and the present invention.

[Explanation of symbols]

2 to 4 data files, 5 control unit, 6-track free space detection unit, 7-track remaining free space inspection unit, 9
Internal storage device, 10, 10A, 10B external storage device, 15 storage media, 16, 17 tracks, 24 file detection section, S2 first file storage means, S3 recordable capacity detection means, S4 recording means , S14 second file recording means, S15 reproducing means, S21 file recording means, S22 recordable capacity detecting means.

Claims (4)

[Claims] 1. An apparatus for providing an external storage device with a storage medium having a plurality of rotating concentric tracks, and recording a plurality of data files on the storage medium, or reproducing the data file from the storage medium. A file recording / reproducing apparatus comprising a control unit for recording the data file in the storage medium in the track unit or reproducing the data file in the track unit from the storage medium. 2. An internal storage device and an external storage device are provided,
In an apparatus for providing a storage medium having a plurality of rotating concentric circular tracks in the external storage device and recording a plurality of data files in the storage medium, the input data file is stored in the internal storage device. File storage means, a recordable capacity detection means for detecting the storable capacity of the track in which the input data file can be stored, and a recordable capacity detection means for detecting the data file stored in the internal storage device. A file recording / reproducing apparatus comprising: a recording unit that records the track unit in the storage medium according to a result. 3. A second file storage means for storing, in the internal storage device, a data file recorded in track units on the storage medium of the external storage device, and a reproduction means for reproducing the data file stored in the internal storage device. The file recording / reproducing apparatus according to claim 2, further comprising: 4. A storage medium having an internal storage device, a first external storage device, and a second external storage device, and having a plurality of concentric tracks that rotate on the first and second external storage devices, respectively. And reproducing the plurality of data files recorded in the storage medium of the first external storage device and recording the data files in the storage medium of the second external storage device.
File storage means for detecting the data file to be copied, which is stored in the storage medium of the first external storage device, and storing it in the internal storage device; and present in a track of the storage medium of the second external storage device. A recordable capacity detecting means for detecting a recordable free space, and the second external storage device according to the detection result of the recordable capacity detecting means for the data file to be copied stored in the internal storage device. A recording / reproducing apparatus comprising: a recording unit for recording the above-mentioned track unit on the storage medium.