JPS6013376A - Storing method of information - Google Patents

Abstract

PURPOSE:To discriminate an additional recording start position on a recording medium automatically and easily by storing the number of times of recording in an external storage means or a non-data storage area in the recording medium. CONSTITUTION:When a driving motor of an optical disc (recording medium) 1 is turned on, a tracking servo loop 31 is opened and the previously stored number (n) of times of recording is detected. An information end signal is detected during the reproducing of recording information on the recording medium 1, the number (n) of times of recording recorded immediately after the detection and whether the number of times of recording coincides with the final number (n) of times of recording or not is judged. If both values coincide with each other, picture information 17 starts to be recorded on the recording medium 1 through a laser modulating circuit 16 and a semiconductor laser 5. After recording, an information end signal is recorded immediately after the recording information and then a signal indicating the number (n+1) of times of recording is recorded. At the recording of the information end signal and the number (n+1) of times of recording, these signals are stored in the external storage means or the non-data storage area in said recording medium 1.

Description

TECHNICAL FIELD The present invention relates to an information storage method, and more particularly to an information storage method for recording and reproducing information on a disc-shaped recording medium using a light beam.

BACKGROUND OF THE INVENTION A device as shown in FIG. 1 has heretofore been used as an information storage device suitable for carrying out the method of the present invention.

In FIG. 1, a recording medium 1, which is a rotating disk, is connected to a turntable 3, which rotates the spindle of a motor 2.
The motor 2 rotates the motor 2. Reference numeral 4 indicates a recording head, which includes a semiconductor laser 5, a polarizing plate 6, a half mirror 7, a king mirror 8, an imaging lens (focus lens) 9, an astigmatism optical system 1°, and a light receiving system. It is provided with an element 11 and is movable in the radial direction of the recording medium 1, that is, in the direction of arrow A, by a drive mechanism (not shown).

A laser beam output from the semiconductor laser 5 passes through a polarizing plate 6 and a half mirror 7, is reflected by the tracking mirror 10, and is focused onto the recording medium 1 by the imaging lens 9.

On the other hand, the light reflected from the recording medium 1 passes through the imaging lens 9. ) It is reflected by the racking mirror 8, further reflected by the half mirror 7, passes through the astigmatism optical system 10, and enters the light receiving element 11.

By the method described above with reference to FIG. 1, information corresponding to the drive signal of the semiconductor laser 5 is recorded.

One way to use this glaze for storing information is as a file device. In general, this file device often stores image information from several manuscripts to several dozen autumn equinoxes in multiple batches, and additional recording is performed to record additional data on an optical disc that has already recorded data. . In this case, in order to perform additional recording without creating an unrecorded area, it is necessary to detect the final position of the recorded information.

An information signal indicating the end of recording is recorded immediately after the last recorded information on the optical disc, and when additional recording is performed, the information that has already been recorded is played back and the information end signal is Additional recording must be performed immediately after detection.

However, in the conventional information storage method, only the information end signal is recorded immediately after each piece of recorded information, so when the third and subsequent information recordings are additionally recorded, multiple information end signals on the recording medium are required. It is not possible to determine which of the information end signals is the desired signal, that is, the signal indicating the final position, and this has the disadvantage that it takes a great deal of time to find the position at which additional recording should start. .

OBJECTIVES An object of the present invention is to provide an information storage method that eliminates the drawbacks of such conventional information storage methods and allows automatic and easy determination of the additional recording start position on a recording medium.

A feature of the present invention is that a signal indicating the number of recordings is recorded together with a recording end signal immediately after the last recording information, and the number of recordings is stored in an external storage means or a non-data storage area of a recording medium (optical disc). It is about achieving a goal.

That is, in the case of performing additional recording, the information storage method according to the present invention detects the number of recordings stored in the non-data storage area on the external recording means or recording medium, and performs a general head access and then records the data after reading. The information recorded is reproduced, and additional recording is performed immediately after a signal on the recording medium corresponding to the number of recordings is detected.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments will be described with reference to FIGS. 2 and 3, taking as an example the case where the present invention is implemented in a recordable image file device.

In FIG. 2, corresponding parts of the optical disk device described in FIG. 1, such as the recording medium 1 and the recording head 4, are indicated by the same reference numerals, and the recording head 4 in FIG. 2 also serves as a playback head. ing.

Reference numeral 12 indicates an external image reading device, and an image reading preparation signal 13 is sent to the controller 14 from this reading device. This image reading preparation signal 13 is turned ON when the reading preparation is completed, and turned OFF when the reading is completed. On the other hand, an information request signal 15 is sent from the controller 14 to the image reading device 12 . The image reading module 12 sends image information 17 to the laser modulation circuit 16 in accordance with this information request signal 15.
send.

This laser modulation circuit 16 modulates the image information 17 into MFM and outputs it as a laser drive signal 18.

Further, the laser modulation circuit 16 switches between recording the laser power (5) - (strong) and beef cattle (weak) in accordance with the instruction signal 19 from the controller 14 .

The laser drive signal 18 from the laser modulation circuit 16 is sent to the head 40 and the semiconductor laser 5, which also serves as a recording/reproducing head, and by driving this, recording or reproduction is performed.

The movement of the disk 4, that is, the drive in the radial direction of the recording medium (disk) 1, is performed by a head drive motor 2o.
The motor is controlled by a motor control circuit 21.

The controller 14 sends control signals 22 to the motor control circuit 21 to control the motor 2o, such as forward movement, fast forward movement, rear corner, and stop. A position signal 23 is sent.

Reference numeral 24 indicates an external image forming apparatus, and an image forming preparation signal 25 is sent from this image forming apparatus to the controller 14 during reproduction. This image formation ready 25 is turned ON when the image formation preparation is completed, and turned OFF when image 1 dust formation is completed.
It becomes F. On the other hand, a recording signal read by the light receiving element 11 of the head 4 is amplified by an amplifier (6) 26 and demodulated by a demodulator 27 into an image information signal. This demodulator 27 sends an image information signal 29 to the image forming apparatus 24 in accordance with an image information transfer signal 28 from the controller 14 . On the other hand, among the signals sent from the light receiving element 11 to the demodulator 27 through the amplifier 26, the synchronization signal and the start and end signals 30 of the image information are returned to the controller 14.

Reference numeral 31 indicates a tracking circuit, which is connected to the light receiving element 1.
The tracking mirror 8 is driven by inputting signals 32 and 33 from 1 and outputting a tracking mirror IgA movement signal 34 based on these signals.

Next, with reference to FIG. 3, an explanation will be given of the operational procedure when implementing the information storage method according to the present invention in the image file device of FIG. 2. Similarly, here, the image reading device 1
A case will be described in which the information read in step 2 is converted into an image information signal 17 and this is additionally recorded in a spiral manner.

First, when recording mode is selected on Stella, 7°101,
In step 102, the drive motor 2 of the optical disc (recording medium) 1 is turned on, and the optical disc starts rotating, and the tracking sensor? The loop opens. Accordingly, in step 103, the number n of recordings stored in advance in a non-data storage area on the outermost periphery of the disk or an external storage area such as a ROM is detected.

Next, using the Stella f104, the head 4 is advanced in fast forward motion, the semiconductor laser 5 is turned on with the reproducing power, and the autofocus is turned on. In this operating state, a track crossing signal is generated because the laser spot crosses an already recorded information track. Therefore,
In step 105, this track (^4 disconnection signal is detected,
When this track crossing signal is no longer generated (step 106), the radar 4 is temporarily stopped. Then,
As the head 4 is moved backward at Stella 7°107, it again enters the area where the track crossing signal is generated, p1 step f1.
This track crossing signal is detected in step 08, and upon detection, the head 4 is stopped (step 109).

In this state, when the controller 14 receives the reading preparation signal 13 from the image reading device W12 in the Stella 7'llO, in step 111, the head 4 is advanced at the reproduction speed, and the tracking loop is closed to remove the already recorded data. track the track.

The purpose of the operation procedure explained above is to access the recording start position of the head at high speed.Instead of this operation procedure, the number of recorded tracks is memorized in advance, At the time of additional recording, it is also possible to adopt an operation procedure in which the head is accessed to the approximate position by fast-forwarding based on this information, and then the head is moved forward at the playback speed while tracking.

While the recorded information on the recording medium 1 is being reproduced in the state of the Stella f111, the Stella 7' detects an information end signal.
l 12) Immediately after that, playback the number of recordings n recorded, and at Stella 7°113, this number of recordings will be the final number of recordings n.
determine whether it is equal to

(9) If it is not equal to n, continue to reproduce the information, repeat the detection of the information end signal and the reproduction of the number of recordings, and judge whether this number of recordings is equal to the final number of recordings n. Give it back. If it is equal to n, proceed to the next step 114 where the tracking sensor opens a loop and Stella 7'l
At step 15, the controller 14 sends an image information request signal 15 to the image reading device 12. Therefore, step 116
Then, the laser power is switched from reproduction (weak) to recording (strong), and recording of the image information 17 sent from the image reading device onto the recording medium 1 through the laser modulation circuit 16, semiconductor laser 5, etc. is started.

When the recording of the image information 17 is completed (step 117
), an information end signal is recorded immediately after this storage 1'# information (image information) in Stella f118, and further, in step 119, a signal indicating the number of recordings n+1 is recorded.

Finally, in step 120, the laser, autofocus, and spindle motor (disc removal motor 2) are all turned off, and then, in step 7'' 121, the blade 4 is returned to its home position.

When recording the information end signal and the number of recording times n+1 in steps 118 and 119, these signals are stored in the external storage means or the non-data recording area of the recording medium 1 at the same time.

This completes one cycle of the information storage method according to the present invention (step 122).

The present invention is not limited to the optical disk device of the embodiment, but can be applied to various types of devices. For example, the recording medium may be drum-shaped or card-shaped.

Further, the present invention can be applied not only to devices that perform recording and reproducing using a light beam, but also to devices equipped with a magnetic head or other terrestrial recording and reproducing means.

As is clear from the above description of the embodiments, the configuration of the present invention allows the recording head to be easily moved to the final position of the recorded information (the end position of the final recorded information) no matter how many times additional recording is performed one after another. Moreover, it is possible to provide an information recording method that allows quick access and allows smooth connection of recording tracks of each piece of recorded information.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram illustrating the structure of an optical disk device suitable for implementing the information storage method according to the present invention, and FIG.
A block diagram illustrating the overall configuration and recording and reproducing operation when the optical disk device shown in the figure is used as an image file device,
FIG. 3 is a flowchart illustrating a specific operational procedure when implementing the information storage method of the present invention using the image file device shown in FIG. 1... Recording medium (optical disk), 2... Motor, 4
... Recording head (recording/reproducing head), 5... Semiconductor laser, 8... Tracking mirror, 9... Imaging lens (focus lens), 11... Light receiving element, 12
...image reading device, 14...controller, 16.
...Laser modulation circuit, 18...Laser drive signal, 20
...Head drive motor, 24...Image forming device, 2
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Claims (1)

[Claims] (1) In an information storage method for recording and reproducing information on a recording medium, when repeatedly performing additional recording, a signal indicating the end of recording and a signal indicating the number of recording times are recorded immediately after the last recorded information, and An information storage method, characterized in that the number of times of recording is recorded in an external storage means or a non-data storage area of the recording medium.