KR19990059524A - Simultaneous recording / playback apparatus and method - Google Patents

Abstract

The present invention relates to a recording / reproducing apparatus and a method for enabling simultaneous recording / reproducing.

A simultaneous recording / reproducing apparatus according to the present invention includes first and second pickup modules for accessing a recording medium divided into a recording area and a reproduction area, and first and second high frequency amplification signals for amplifying a high frequency signal detected by the recording medium. And first and second servo units for controlling the tracking and focusing of the first and second pickup modules and the rotational speed of the recording medium, main controllers for controlling the first and second servo units, and simultaneous recording of data. And an application block for setting a reproduction mode.

Description

Simultaneous recording / playback apparatus and method

The present invention relates to a recording / reproducing apparatus and method for a recording medium, and more particularly, to a recording / reproducing apparatus and method for enabling simultaneous recording / reproducing.

In general, an optical recording medium records information desired by a user by forming a pit on a recording surface of the optical recording medium, and irradiates a light beam to the recording surface to form a difference in the reflected light beam depending on whether the pit is present or not. By restoring the data, the desired data is reproduced. On the other hand, the magnetic tape is to record the information by forming a current magnetic field corresponding to the information desired by the user on the magnetic surface, to reproduce the desired information by restoring the current magnetic formed on the magnetic surface to electromotive force.

As an example, the recording / reproducing apparatus according to the prior art, as shown in FIG. 1, includes a pickup module 4 for optically accessing the optical recording medium 2, tracking and focusing and optical recording of the pickup module 4; A servo unit 8 for controlling the rotational speed of the medium 2, a main controller 10 for controlling the servo unit 8, and a radio frequency detected from the optical recording medium (hereinafter referred to as "RF"). RF amplification unit (6) for amplifying. The pickup module 4 is configured to irradiate a recording surface of the optical recording medium 2 with a light beam having a predetermined wavelength to detect a tracking error signal due to a difference in the reflected light beam detected according to the presence or absence of pits formed on the recording surface; (Hereinafter referred to as "TES"), a focusing error signal ("FES") and a radio frequency ("RF") signal, and the RF amplifier 6 The RF signal is amplified and a signal processor (not shown) restores the RF signal to data in its original form. Meanwhile, the main controller 10 controls the servo unit 8 according to TES and FES to perform forking and tracking of the pickup module 4.

However, such a recording medium cannot be reproduced when recording, and cannot be recorded when reproducing. In other words, recording / playback is impossible at the same time. As a result, the user is inconvenient to use the recording / playback apparatus only for one purpose (for example, data reproduction), and there is a demand for a recording / playback apparatus capable of performing recording and playback at the same time.

Accordingly, it is an object of the present invention to provide a simultaneous recording / reproducing apparatus and a method for simultaneously recording / reproducing.

1 is a block diagram showing a configuration of a recording / reproducing apparatus according to the prior art.

2 is a block diagram showing a configuration of a simultaneous recording / reproducing apparatus according to the present invention.

3 is a flowchart showing a simultaneous recording / reproducing method according to the present invention.

4A to 4C show a recording / reproducing method of an optical recording medium.

5A to 5C show a recording / reproducing method of magnetic tape.

* Explanation of symbols for main parts of the drawings

2, 12: optical recording medium 4, 14: pickup module

6, 16: high frequency amplifier 8, 18: servo control unit

10, 20: magnetic tape 22: application block

24: magnetic tape

In order to achieve the above object, a recording / reproducing apparatus according to the present invention includes first and second pickup modules for accessing a recording medium divided into a recording area and a reproduction area, and a first signal for amplifying a high frequency signal detected by the recording medium. And a second high frequency amplifier, first and second servos for controlling the tracking and focusing of the first and second pickup modules, and a rotation speed of the recording medium, and a main controller for controlling the first and second servos. And an application block for setting a simultaneous recording / reproducing mode of data.

The simultaneous recording / reproducing method according to the present invention includes a first step of setting a simultaneous recording / reproducing mode, a second step of selecting a pickup module according to the set mode, and a case of selecting a second pickup module in the pickup module selection step. And a third step of determining whether the second pickup module is in use, and if the second pickup module is not in use, recording the second pickup module on a recording medium divided into a recording area and a reproduction area by the control of the second servo unit. And / or a fourth step of performing playback, a fifth step of determining whether to use the first pickup module when the first pickup module is selected in the pickup module selection step, and when the first pickup module is not in use, And a sixth step in which the first pickup module performs recording and / or reproduction on a recording medium divided into a recording area and a reproduction area by the control of the first servo unit.

Other objects and features of the present invention other than the above object will become apparent from the description of the embodiments with reference to the accompanying drawings.

A preferred embodiment of the present invention will be described with reference to FIGS. 2 to 5C.

FIG. 2 is a diagram showing a simultaneous recording / reproducing apparatus according to the present invention, wherein the simultaneous recording / reproducing apparatus according to the present invention in the configuration of FIG. Tracking and focusing of the second pickup modules 14a and 14b, the RF amplifiers 16a and 16b for amplifying the RF signal detected by the optical recording medium, and the first and second pickup modules 14a and 14b. First and second servo units 18a and 18b for controlling the rotational speed of the optical recording medium 12, main controller 20 for controlling the first and second servo units 18a and 18b, and data; And an application block 22 for setting a simultaneous recording / reproducing mode of. When the recording / reproducing mode is simultaneously set in the application block 22, the main controller 20 controls the first and second servo units 18a and 18b to record and reproduce the positions on the optical recording medium 12. The first and second pickup modules 14a and 14b are moved. For example, when the first pickup module 14a performs data reproduction, the first pickup module 14a detects an RF signal, TES and FES from the reflected light beam by irradiating an optical beam to the optical recording medium, thereby detecting TES, The first servo unit 18a is controlled by transmitting the FES to the main controller 20, and the RF signal is amplified by the RF signal by the first RF amplifier 16a, and then by the signal processor (not shown). Restores the original signal. On the other hand, when the second pickup module 14b records the data, the optical recording medium is irradiated with a light beam to record the data in the user information military service. 3 is a flowchart showing a simultaneous recording / reproducing method according to the present invention.

Set the simultaneous recording / playback mode in the application block. In step 31, the application block 22 sets a recording / reproducing mode to transmit to the main control unit 20. The pickup module is selected by the mode set in the application block. (Step 32) The main controller 20 selects the first and / or second pickup modules 14a and 14b to access the optical recording medium under the control of the application block 22. When the second pickup module is selected in step 32, it is determined whether the second pickup module is used. (Step 33) When the second pickup module 14b is selected by the main controller 20, it is determined whether the second pickup module 14b is currently in use. If the second pickup module is not in use, recording and / or reproduction of the second pickup module is performed by the control of the second servo unit. (Step 34) When the second pickup module 14b is not in use, the main controller 20 controls the second servo unit 18b to move the position of the second pickup module so that the recording area and the reproduction area are divided. Data is recorded and / or reproduced on the divided optical recording medium 12. When the first pickup module is selected in step 32, it is determined whether the first pickup module is used. (Step 35) When the first pickup module 14a is selected by the main controller 20, it is determined whether the first pickup module 14a is currently in use. If the first pickup module is not in use, the first pickup module performs recording and / or reproduction under the control of the first servo unit. In operation 36, when the first pickup module 14a is not in use, the main controller 20 controls the first servo unit 18a to move the position of the first pickup module to move the position of the first pickup module 14a. Data is recorded and / or played back. As described above, the first and second pickup modules 14a and 14b are used to simultaneously record / reproduce information on the optical recording medium 12 in which the reproduction area and the recording area are divided.

Meanwhile, in order to simultaneously record / reproduce information as described above, the optical recording medium 12 should be divided into a reproduction area and a recording area so that information can be simultaneously recorded / reproduced. In detail, the first optical recording medium is divided into an upper surface 12a and a lower surface 12b, and each is divided into a recording area and a reproduction area. For example, when the upper surface is used as the recording area, the lower surface is used as the reproduction area, and the division method at this time is shown in Fig. 4A. Second, the optical recording medium is divided into an inner circumferential surface 12c and an outer circumferential surface 12d, and each is divided into a recording area and a reproduction area. The division method at this time is shown in FIG. 4B. Third, tracks of the optical recording medium are alternately divided into odd tracks 12e and even tracks 12f, and are divided into recording areas and playback areas. The classification method at this time is shown in Fig. 4C.

2 and 3 can be equally applied to the case where magnetic tape is used as the recording medium. To this end, the magnetic tape 24 should be divided into a playback area and a recording area so that information can be recorded / reproduced at the same time. In detail, the first magnetic tape is divided into a front surface 24b and a rear surface 24a, and each of the magnetic tape is divided into a recording area and a reproduction area. For example, when the front surface 24b is used as the recording area, the rear surface 24a is used as the reproduction area, and the division method at this time is shown in Fig. 5A. Second, the magnetic tape is divided into an upper surface 24c and a lower surface 24d, and each is divided into a recording area and a reproduction area. The classification method at this time is shown in Fig. 5B. Third, magnetic tapes are alternately divided into diagonal lines 24c and 24f to divide each into a recording area and a reproduction area. The classification method at this time is shown in Fig. 5C.

As described above, the recording medium is divided into a recording area and a reproduction area, and information is simultaneously recorded / reproduced on the recording medium by using a simultaneous recording / reproducing apparatus.

As described above, the synchronous recording / reproducing apparatus and method of the present invention divides the recording medium into a recording area and a reproducing area, and simultaneously records / reproduces information on the recording medium by using the simultaneous recording / reproducing device and method. There is this.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (8)

First and second pickup modules for accessing a recording medium divided into a recording area and a reproduction area; First and second high frequency amplifiers for amplifying the high frequency signals detected by the recording medium; First and second servo units for controlling the tracking and focusing of the first and second pickup modules and the rotational speed of the recording medium; A main control unit controlling the first and second servo units; And an application block for setting a simultaneous recording / reproducing mode of data. The method of claim 1, And the upper and lower surfaces of the recording medium are divided into a recording area and / or a reproduction area. The method of claim 1, And an inner circumferential surface and an outer circumferential surface of one surface of the recording medium are divided into a recording area and / or a reproduction area. The method of claim 1, And an odd-numbered track and an even-numbered track of one side of the recording medium are alternately divided into a recording area and / or a reproduction area. The method of claim 1, And a recording area and / or a reproduction area of the front and back of the recording medium. The method of claim 1, And the upper portion and the lower portion of one side of the recording medium are divided into a recording area and / or a reproduction area. The method of claim 1, And a portion of the recording medium divided by diagonal lines is alternately divided into a recording area and / or a reproduction area. The first step of setting the simultaneous recording / playback mode; A second step of selecting a pickup module by the set mode; A third step of determining whether to use the second pickup module when the second pickup module is selected in the pickup module selection step; A fourth step of, when the second pickup module is not in use, recording and / or reproducing by a second pickup module on a recording medium divided into a recording area and a reproduction area by the control of the second servo unit; A fifth step of determining whether to use the first pickup module when the first pickup module is selected in the pickup module selection step; And a sixth step of performing recording and / or reproducing on a recording medium divided into a recording area and a reproduction area by the control of the first servo unit when the first pickup module is not in use. Simultaneous recording / playback method.