JPH076563A - Disk recorder - Google Patents

Abstract

PURPOSE:To obtain a disk recorder capable of copying at high speed referring to the copying of disk data. CONSTITUTION:Two disk devices having two reproducing heads a3, b4 and two recording heads a5, b6 are provided, then groups of reproducing head and recording head copying the copy area which is set from a copy area setting signal 8, by sharing the work with P pieces (P<=M) of reproducing heads and Q pieces (P<=Q<=N) of recording heads, are decided. Then, the control is made by a control means 7 of copy area calculation and reproducing head/recording head so that the copies of each group are finished at the same time, then the coping is made for each group.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk recording device for copying data on a disk.

[0002]

2. Description of the Related Art FIG. 4 shows an example of copying a disc in a conventional disc recording apparatus. In the conventional disc recording apparatus, there are one reproducing head 15 for reproducing the disc a1 and one recording head 16 for recording the reproduced signal 17 reproduced by the disc a1 on the disc b2.
Based on the copy area setting signal 18 input from the outside through the reproducing head recording head control means 20, the disk a
Copying is performed by reproducing the data in the area on the first recording area with the reproducing head 15 and recording the reproduced data in the area on the disk b2 determined by the recording area set by the recording head 16.

[0003]

However, in the above-mentioned conventional disk recording apparatus, one reproduction head reproduces the copy area of the disk a1 and the reproduced data is recorded in the copy area of the disk b2 by one recording head. Was. In such a case, the time required for copying is longer than the time for reproducing the copy area with one head even if the reproduction and the recording are performed at the same time.

SUMMARY OF THE INVENTION In view of the above points, an object of the present invention is to provide a disk recording apparatus capable of high-speed copying, which shortens the time required for copying.

[0005]

In order to achieve the above object, the present invention provides a copy source disk device with a plurality of reproducing heads and a copy destination disk device with a plurality of recording heads. The copy area is divided, and each divided copy area is shared by each reproducing head / recording head pair for copying, and the copying of each reproducing head / recording head pair operates simultaneously. This is a configuration for copying.

[0006]

With this configuration, when N sets of reproducing heads / recording heads perform copying, the time required for copying is at least N minutes as compared with the case where one set of reproducing heads / recording heads performs copying as in the conventional case. Becomes 1.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a block diagram showing the configuration of a disk recording apparatus according to a first embodiment of the present invention.

In FIG. 1, a disk a1 is a copy source disk. The disk b2 is a copy destination disk. That is, an area on the disk a1 and an area on the disk b2 are set by a copy area setting signal 8 from the outside.
Data is copied from the area on the disk a1 to the area on the disk b2. The disc a1 has a reproduction control signal 1
1. Based on the reproduction control signal 13, the reproduction head a3 and the reproduction head b4 respectively reproduce the reproduction signals 9 and 10, and the reproduction signal 9 of the reproduction head a3 is sent to the recording head a5. The reproduction signal 11 from the reproducing head b4 is sent to the recording head b6. Further, on the disc b2, the reproduction signals 9 and 11 are recorded by the recording head a5 and the recording head b6 based on the recording control signals 12 and 14.

The copy area calculation / playback head / recording head control means 7 sets the copy area set by the copy area setting signal 8 to, for example, the playback head a3 and the recording head a5.
Area to be copied by the reproducing head b4 and the recording head b6
Is divided so that each copy ends at the same time as the area to be copied, the reproduction area of each reproduction head can be reproduced, and reproduction data can be recorded in the distribution area of each recording head. Control playback and recording. By performing the copy in this way, in this example, the copy is completed in a minimum half of the time required when the copy is performed by using one conventional reproducing head and one recording head.

A disk recording apparatus using a plurality of disk apparatuses having a plurality of reproducing / recording heads in the second embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is a block diagram showing the configuration of a disk recording apparatus according to the second embodiment of the present invention. An example of copying in a system of four disk apparatuses having two reproducing heads and two recording heads. It is the figure which showed. FIG. 3 is a diagram showing the operation of each head during copying. Since the copy area is usually set by a logical address, even a continuous area on the logical address is usually divided into several areas on the physical address in many cases. Copying when the copy area setting is a continuous area on the logical address and spans different disk devices on the physical address will be described with reference to these drawings.

The four disks, disk c21, disk d22, disk e23, and disk f24, each have two reproducing heads and two recording heads (reproducing heads dk and recording heads dk). The output of each reproducing head and the input of each recording head are connected to the input and output of the crossbar switch 43, respectively. The copy area setting signal 8 from the outside is input to the copy area calculating and reproducing head / recording head control means 42. The copy area calculation / playback head / recording head control means 42 divides the copy source area and the copy destination area so that the copy of each playback head / recording head pair operates at the same time. Control.

An example of division of the copy source area and the copy destination area will be described with reference to FIG. Copy area setting signal 8
However, the logical addresses of the copy source and the copy destination are continuous, and the physical addresses of the copy source are on disk c21 and disk d.
22 in two locations, the copy destination physical address spans two locations on the disk e23 and the disk f24, and the reproduction of the copy source area on the disk c21 is performed on the disk d22.
It is assumed that it takes longer than the reproduction of the upper copy source area and that the recording of the copy destination area on the disk e23 takes less time than the recording of the copy destination area on the disk f24.

The copy source area on the disk c21 is the area A1, the copy source area on the disk d22 is the area A2,
The copy destination area on the disk e23 is area B1, and the copy destination area on the disk f24 is area B2. Area A
1 is divided and copied into the areas B1 and B2, and the area A2 is copied into the area B2. In this case, the copy area is divided by the copy area calculation and reproduction head / recording head control means 42 so that each reproduction and recording head operates simultaneously.

That is, the reproducing heads are operated simultaneously,
Since the area A1 is larger than the area A2, the area A1 is divided into two equal parts and allocated to the reproducing head d33 and the reproducing head e34.
The area A2 is assigned to the reproducing head f35. Also,
The area B1 includes the area D assigned to the reproducing head d33 and the reproducing head e34 so that the recording heads operate simultaneously.
Is divided into a part of the area (area E1, area B1 = area D + area E1) allocated to the recording head h.
The area 29 and the area E1 are assigned to the recording head i30 to record the reproduction data.

The area B2 is divided into an area (area E2) assigned to the reproducing head e34 and an area A2 (area F) assigned to the reproducing head f35, and the area E2 is
The recording head j31 and the area F are assigned to the recording head k32 and the reproduction data is recorded. Further, the copy area calculation and reproducing head / recording head control means 42 is provided with the crossbar switch 4 so that such copying can be performed simultaneously.
1 is controlled by the crossbar switch control signal 43. When the copy area is divided in this way and reproduction and recording are performed at the same time, copying is completed only in the time for reproducing the area shared by the reproduction head d33 or the reproduction head e34.

[0017]

As described above, the copy time in the present invention is inversely proportional to the number of reproducing / recording head pairs used.
Therefore, it is possible to perform high-speed copying while shortening the time required for copying.

Even when the reproduction head checks the copy data at the copy destination, the same effect can be obtained by dividing the check area by a plurality of reproduction heads.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a disk recording apparatus according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a disk recording device according to a second embodiment of the present invention.

FIG. 3 is a diagram showing an example of division of a copy area and an example of allocation of a reproducing head and a recording head in the second embodiment.

FIG. 4 is a block diagram of a conventional disc recording device.

[Explanation of symbols]

1 disk a 2 disk b 3 reproducing head a 4 reproducing head b 5 recording head a 6 recording head b 7 copy area calculation and reproducing head recording head control means 21 disk c 22 disk d 23 disk e 24 disk f 25 recording head d 26 Recording head e 27 recording head f 28 recording head g 29 recording head h 30 recording head i 31 recording head j 32 recording head k 33 reproducing head d 34 reproducing head e 35 reproducing head f 36 reproducing head g 37 reproducing head h 38 reproducing head i 39 reproducing head j 40 reproducing head k 41 crossbar switch 42 copy area calculation and reproducing head / recording head control means

Claims (2)

[Claims] 1. M reproducing heads (M is a number of 2 or more) and N reproducing heads.
A first disk device having N (N is a number of M or more) recording heads; a second disk device having N recording heads and M reproducing heads; When the data is copied to the second disk device or the data is copied from the second disk device to the first disk device, a copy area set from the outside and the copy area are stored in the first disk device or the second disk device. The area is shared by the P (P is a number of M or less) reproducing heads of the disk device and the Q (Q is a number of P or more and N or less) recording heads of the second disk device or the first disk device. A set of a reproducing head and a recording head to be copied is determined, and a copy area calculation means for calculating the copy area and copy order of each set so that the copies of each set operate simultaneously, and the copy area calculation means. A reproducing head control means corresponding to each reproducing head of the first disk device or the second disk device for reproducing the shared area, and the recording area for recording the shared area determined by the copy area calculating means. Second
A disk recording device comprising a recording head control means corresponding to each recording head of the disk device or the first disk device. 2. A disk device having M reproducing heads and N recording heads, respectively, and R units, and reproducing head data of each of the disk devices is input to each of the recording heads of the disk device. A crossbar switch that outputs data to, a copy area set from the outside,
S copy areas of the disk device (S is M × R)
The number of reproducing heads and the T recording heads of the disk device (T is a number not less than S and not more than N × R) determine a set of reproducing heads and recording heads that share an area for copying.
Corresponding to the copy area calculating means for calculating the copy area and copy order of each group so that the copies of each group operate simultaneously, and each reproducing head for reproducing the shared area determined by the copy area calculating means. A reproducing head control means and a recording head control means corresponding to each recording head for recording the allocated area determined by the copy area allocation means are provided, and each reproduction head determined by the copy area calculation means. A disk recording apparatus, wherein the crossbar switch is controlled by a set of recording heads.