JPH05225759A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To enable recording of a UTOC on a recording medium in a short time, when the recording medium is taken out by the electric power supplied next to the state of no current supplied, after the timer recording is performed. CONSTITUTION:A memory 5a to store a latest UTOC information, a memory 5b to store a start address of recording or reproducing, and a memory 5c to store the information of whether a rewriting of the UTOC is necessary or not, are subjected to battery backup. When the need to rewrite the UTOC is generated by the timer recording, the information of the need to rewrite the UTOC information/UTOC and the start address of recording or reproducing are stored in the aforementioned each memory, then the UTOC is written into the recording medium based on the storage of the aforementioned memories when the recording medium is taken out by the current supplied again after the timer recording is finished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a UTOC (user TO
The present invention relates to a recording / reproducing apparatus for recording C) on a recording medium, and more particularly to a means for enabling timer recording by turning on / off a power supply with a timer switch.

[0002]

2. Description of the Related Art Among conventional recording / reproducing devices, for example, MO
The configuration of the device (magneto-optical disk device) is shown in FIG. The recording / reproducing device 1 is controlled by the microcomputer 2 and the MO
Recording / playback is performed on the disc.

The microcomputer 2 includes a ROM and an R
It has a built-in AM and operates in accordance with a program written in a ROM and signals sent from the timer switch 3, the key matrix 6 and the reset circuit 4 to control the recording / reproducing device 1.

The timer switch 3 outputs a signal for instructing recording or reproduction to the microcomputer 1 when the power source is energized by a timer. Key matrix 6
Outputs a signal for operating the device to the microcomputer 1 by a user's operation.

The reset circuit 4 outputs a power-on reset signal to the microcomputer 1 when the power is turned on.

[0006]

When the above-mentioned conventional recording / reproducing apparatus is used to turn on / off the power supply by the timer for timer recording, the MO recording is performed when the power supply is turned off.
Since the UTOC of the disc cannot be recorded,
Next, UTOC recording is performed when the power is turned on.

At this time, since the UTOC information is not held by the recording / reproducing apparatus, it is necessary to reproduce the MO disk from the beginning and check the track number and its start time and end time from the subcode of the recorded data.
There was a drawback that it took a long time to record the TOC.

Further, in the MD system in which the track number or the like is not recorded in the recording data, the UTOC information cannot be obtained after the timer recording, so that the timer recording cannot be performed.

The present invention has been made in view of the above points, and an object of the present invention is to carry out the UTOC on the recording medium in a short time after the timer recording is performed and then when the recording medium is taken out. An object is to provide a recording / reproducing device capable of recording.

[0010]

The recording / reproducing apparatus of the present invention stores the latest battery-backed UTOC information in the recording / reproducing apparatus for recording the UTOC information as the table-of-contents information of the information recorded by the user on the recording medium. A memory, a memory for storing whether or not it is necessary to rewrite the UTOC, and a memory for storing a start address of recording or reproduction are provided, and when it becomes necessary to rewrite the UTOC by timer recording, it is necessary to rewrite the UTOC information and the UTOC. And the start address of recording or reproduction are stored in the respective memories, and when the timer recording is completed and the recording medium is taken out and the recording medium is taken out, the UTOC is written in the recording medium based on the storage of the memory. Is.

[0011]

According to the recording / reproducing apparatus of the present invention, the UTOC information is held in the battery-backed memory after the timer recording is performed. The UTOC can be promptly recorded on the recording medium based on the UTOC information.

Further, since the recording / reproducing start address is also stored in the memory, it is possible to promptly start recording or reproducing by searching the address.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording / reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a recording / reproducing apparatus which is an embodiment of the present invention. In the figure, reference numeral 1 is a recording / reproducing device for recording / reproducing on / from an MO disc, which is controlled by a microcomputer 2.

The microcomputer 2 includes a ROM and an R
It has a built-in AM and operates in accordance with a program written in a ROM and signals sent from the timer switch 3, the key matrix 6 and the power supply monitoring circuit 4a to control the recording / reproducing device 1.

Reference numeral 3 denotes a timer switch having three positions, which instructs the microcomputer 2 to start recording, start reproducing, or stop after energization is started.

Reference numeral 5 denotes a battery-backed memory, which comprises a UTOC information storage memory 5a, a stop address memory 5b and a UTOC rewrite flag memory 5c.

The UTOC information storage memory 5a stores the contents of the UTOC read from the recording medium, and the contents are updated each time recording is performed, and hold the latest UTOC information. The stop address memory 5b stores the absolute time of the recording medium when recording or reproduction is stopped. The UTOC rewriting flag memory 5c is a flag that is set when it is necessary to rewrite the UTOC by timer recording.

The key matrix 6 outputs a signal for operating the device to the microcomputer 1 by a user's operation.

The power supply monitoring circuit 4a gives an instruction to start the operation to the microcomputer 2 after the power supply is stabilized after the start of energization, and when it is in a non-energized state, it receives a voltage drop and is necessary for the microcomputer 2. Memory 5
Instructing to stop the microcomputer 2 when the voltage further decreases.

Next, the operation of the recording / reproducing apparatus will be described. When the power supply is started, the power supply start circuit 4a starts the operation of the microcomputer 2 after the power supply is stabilized. The microcomputer 2 checks the setting state of the timer switch 3 and starts the set operation.

When the timer switch 3 is set to the stopped state, the UTOC rewrite flag memory 5c is checked. If the flag is not set, the contents of the UTOC recorded on the recording medium are read as they are, and the UTOC information storage memory 5 is read.
It is stored in a and becomes a stopped state.

If the flag of the UTOC rewrite flag memory 5c is set, the contents of the UTOC information storage memory 5a are recorded at the UTOC recording position of the recording medium, and the flag of the UTOC rewrite flag memory 5c is lowered to stop the operation.

When the timer switch 3 is set to reproduction, the microcomputer 2 reproduces the recording medium from the position stored in the stop address memory 5b. When a stop instruction is received from the key matrix 6 during reproduction, or an information storage instruction to the memory 5 is received from the power supply monitoring circuit 4a, reproduction is interrupted and the stop address memory 5b stores the position of the stopped recording medium.

During playback, the UTO from the key matrix 6
When the C information change command is received, the flag of the UTOC rewrite flag memory 5c is set, and if the flag is set, the changed UTOC information is set to the UT.
It is stored in the OC information storage memory 5a.

Key matrix 6 during playback or stop
When the removal of the recording medium is instructed, if the flag of the UTOC rewrite flag memory 5c is set, the contents of the UTOC information storage memory 5a are recorded at the UTOC recording position of the recording medium, and the flag of the UTOC rewrite flag memory 5c is set. Stop address memory 5b after unloading and ejecting recording medium
To clear.

If the flag of the UTOC rewrite flag memory 5c is not set, the stop address memory 5b is cleared after the recording medium is ejected.

When the timer switch 3 is set to record, the microcomputer 2 starts recording on the recording medium from the position stored in the stop address memory 5b and sets the flag in the UTOC rewrite flag memory 5c.

If the position stored in the stop address memory 5b indicates the final position of the recordable area of the recording medium, the recording is not started.

When an instruction to store information in the memory 5 is received from the power supply monitoring circuit 4a during recording, the recording is interrupted, the stop address memory 5b stores the position of the stopped recording medium, and is changed by the recording so far. Became UTOC
The information is stored in the UTOC information storage memory 5a, and the flag of the UTOC rewrite flag memory 5c is set.

When a discharge command for the recording medium is received from the key matrix 6 during recording, the recording is stopped and the UTOC information changed by the previous recording is changed to the UTOC of the recording medium.
Recording is performed at the recording position, the stop address memory 5b is cleared, the flag of the UTOC rewrite flag memory 5c is lowered, and then the recording medium is ejected.

By the above operation, the UTOC information can be completely retained even in the timer recording by the timer switch of the power cord. Furthermore, a complete UTOC can be recorded even if the timer recording operation is continuously performed.

Moreover, since the position of the recording medium at the time of starting the reproduction or recording is also recorded, the recording or reproduction is promptly started by the search operation.

[0033]

According to the recording / reproducing apparatus of the present invention, even if the recording / reproducing apparatus is in a non-energized state, if the recording medium is in the recording / reproducing apparatus, the UTOC information and U to be recorded on the recording medium.
Since the information indicating whether or not the TOC needs to be rewritten and the start address for recording or reproduction are stored, it is possible to record the UTOC without error on the recording medium even if the timer recording is performed by the timer switch of the power cord. ..

Further, after timer recording, it is possible to record the UTOC in a short time when the recording medium is taken out by energizing.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a recording / reproducing apparatus that is an embodiment of the present invention.

FIG. 2 is a block diagram showing an example of the configuration of a conventional recording / reproducing apparatus.

[Explanation of symbols]

 1 recording / reproducing device 2 microcomputer 3 timer switch 4a power supply monitoring circuit 5a UTOC information storage memory 5b stop address memory 5c UTOC rewrite flag memory 6 key matrix

Claims (1)

[Claims] 1. In a recording / reproducing apparatus for recording UTOC information as a table of contents of information recorded by a user on a recording medium, a memory for storing the latest battery-backed UTOC information, and whether or not it is necessary to rewrite the UTOC are stored. A memory and a memory for storing the start address of recording or reproduction are provided, and when it becomes necessary to rewrite the UTOC by timer recording, the UTOC information, the information that the UTOC needs to be rewritten, and the start address of the recording or reproduction are described above. A recording / reproducing apparatus configured to store in each memory, and write the UTOC to the recording medium based on the storage of the memory when the recording medium is taken out after the timer recording is finished and the power is supplied again.