JPH03165336A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To obtain the information recording and reproducing device which is shortened in the movement time of its head to shorten the access time greatly and is capable of speedy processing by moving a recording head to a position on a recording medium where a signal is expected to be recorded next in stand-by mode. CONSTITUTION:A switch 9 and a prediction selector register 10 are connected between a seek controller 6 and a drive controller 7 and the switch 9 is set to the signal path to the controller 7 in the access of the recording head 3 to output the erasure/recording signal from the controller 7 to the controller 6, thereby performing erasure or recording. When the head 3 is in stand-by mode, the switch 9 is switched to the signal path to a register 10 and a driving signal for movement to a sector position obtained from a sector table is outputted to the controller 6 to drive a linear motor; and a position detection part 8 detects the position of the head 3 to perform feedback control over a sector where data is recorded next. Consequently, the movement time in the actual operation time of the head becomes equivalent to 0.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an information recording and reproducing device, and more specifically,
The present invention relates to a drive control structure for an optical disk head.

(Prior art) As is well known, light is applied to the unevenness formed on the surface and information is read depending on the state of the reflected light, or conversely, the unevenness is set according to the information to be recorded. An optical disk is a recording medium on which recording is performed by forming pits on the surface.

There are also methods for reading out the magnetic field on a medium called a magneto-optical disk by applying light, and a method called a phase change method for reading out a magnetic field using the crystalline state of the medium.

Some of the above-mentioned optical discs are writable for both recording and reproduction. When using this optical disc, for example, as shown in FIG. An optical access device 2 such as a radially extending or near motor is provided, and in this optical access device 2, a structure is used in which a recording pickup 3 and a reproduction pickup 4 are independently and slidably arranged. .

As the head drive unit in this structure, as shown in FIG. 3, a seek controller 6 is connected to the drive unit 5 of the nonia motor for setting the movement of the head, and target sector information is output to the seek controller 6. A configuration is used in which a drive controller 7 outputs signals from a host section such as a main control section connected to a position detection section 8 for feedback control of the head position, and sector information to be accessed from the host section, so-called address. Information is output to the drive controller 7, and this information is output to the seek controller 6 as a target sector signal.

The above-mentioned seek controller 6 calculates the difference between the current head position and the sector position for access set by the input address information, and moves the belly button at the current position to the target sector position according to this difference. A linear motor is controlled via the drive section 5 to move the object (for example, Japanese Patent Laid-Open No. 63-269336).

(Problems to be Solved by the Invention) By the way, as described above, in an information recording and reproducing apparatus having a structure including a recording pickup independent of a reproducing pick amplifier, for example, when recording information on an optical disk, When erasing and recording, the pickup, or head, is moved to a position corresponding to the recording sector on the optical disk to perform erasing and recording, and the head movement time at this time is limited to the recording/reproducing device. It was included in the access time of the same device as the main access time.

Therefore, if the above-mentioned head movement time becomes longer, the access time including the recording/reproducing processing time in the apparatus becomes longer, and as a result, the recording/reproducing processing cannot be performed quickly6.Therefore, the object of the present invention is to In view of the above-mentioned problems in the conventional information recording and reproducing apparatus, an object of the present invention is to provide an information recording and reproducing apparatus that can shorten the moving time of the head and shorten the access time required for recording and reproducing processing, thereby enabling rapid processing.

(Means for Solving the Problem) In order to achieve this object, the present invention includes a first head having at least a recording function for an information recording medium, and a second head having at least a playback function for the medium. In an information recording/reproducing apparatus having a structure in which a head is driven independently of the head, the head driving section moves the head to a position on the recording medium where a recording operation will be performed next during recording standby. This is a proposal.

(Function) According to the present invention, when the head, particularly the recording head, is in a standby state in which no recording operation is performed, it is moved to a position on the recording medium where it is expected to be recorded next.

(Example) Hereinafter, details of an embodiment of the present invention will be explained with reference to FIG.

FIG. 1 is a block diagram corresponding to FIG. 3 showing a head drive control section in an information recording/reproducing apparatus according to an embodiment of the present invention, and the same structural parts as those shown in FIG. 3 are designated by the same reference numerals. .

The feature of this embodiment is that when the recording head is on standby, the head is moved to the sector position that is expected to be set at the start of the primary operation, thereby eliminating the moving time at the start of the operation. be.

That is, in FIG. 1, a switch 9 and a predicted sector register 10 are connected between the seek controller 6 and the drive controller 7.

The switch 9 described above switches the signal path to the seek controller 6 between the expected sector register 10 and the drive controller 7, and forms a signal path from the expected sector register 10 when the head is in a standby state. ing.

The expected sector register 10 is capable of selecting a drive signal to a sector position corresponding to a sector table managed by the main control unit (host) based on recorded sector information, and the expected sector register 10 allows the recording head 3 to wait. When the switch 9 is connected in this state, a drive signal is output from the sector table to the sector position expected to be recorded next.

In addition, the above-mentioned switch 9 is set in the signal path to the drive controller 7 when the recording head 3 accesses, and outputs the erase/record signal from the drive controller 7 to the seek controller 6 to erase it in the same manner as in the conventional method.・Perform recording.

Since this embodiment has the above configuration, the recording head 3
When in the standby state, the switch 9 is switched to the signal path to the expected sector register 10, and a drive signal for moving to the next recorded sector position obtained from the sector table is output to the seek controller 6. The linear motor is driven and the position of the recording head 3 is detected by the position detection section 8, thereby performing feedback control to the next sector to be recorded.

Note that the above-mentioned selection of the expected sector position is performed by the sector table managed by the main control section on the main body side of the device;
When this information recording and reproducing device is connected to a control device such as a personal computer.

The selection may be made based on a sector table managed by the personal computer.

Further, in the embodiment shown in FIG. 1, a combination of a reproducing head and a recording head including erasing is used, but the combination is not limited to this. For example, the first head has a recording only function, and the second They may be combined so that the head has both erasing and reproducing functions.

(Effects) According to the present invention, when the recording head is in a standby state in which no recording operation is performed, the head is moved to the sector on the recording medium to be recorded next.
By creating the same state as eliminating the moving time that occupies the actual working time of the head, access time can be significantly shortened and recording processing can be executed quickly.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining the main parts of an information recording and reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a plan view model diagram for explaining the outline of the information recording and reproducing apparatus, and FIG.
This figure is a block diagram corresponding to FIG. 1 for explaining the main parts of the information recording and reproducing apparatus shown in FIG. 2. DESCRIPTION OF SYMBOLS 1... Optical disk, 3... Recording head, 4... Playback head, 5... Linear motor drive unit, 6... Seek controller, 7... Drive controller, 9
...Switch, 10... Expected sector register.

Claims (1)

[Claims] A first device having at least a recording function for the information recording medium.
In an information recording/reproducing apparatus having a structure for independently driving a head and a second head having at least a reproducing function for the medium, the drive section of the head is configured to perform a recording operation during recording standby and then a second head having a reproducing function for the medium. An information recording/reproducing apparatus characterized in that the head is moved to a position on the recording medium where the recording is performed.