JPH04362565A - Disk recording/reproducing device - Google Patents

Abstract

PURPOSE:To obtain a disk recording/reproducing device capable of satisfactorily recording the specifications of deviding and writing even when a power service is interrupted during a recording. CONSTITUTION:This device is provided with a power supply circuit 2 for supplying a power to a main circuit 1 constituted of an optical disk, a writing signal means and an optical means and a backup battery for supplying a power in emergency by detecting a power cut condition from the power supply circuit 2. A power is supplied from the power supply circuit 2 to the main circuit 1, the power interruption state from the power supply circuit 2 is detected by the backup battery 3 and a power is supplied in emergency.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk recording and reproducing apparatus, and particularly to power failure protection thereof.

0002

2. Description of the Related Art A conventional disc recording/reproducing apparatus of this type is shown in FIG. FIG. 3 is a block diagram showing the configuration of a conventional optical disc recording and reproducing device. In the figure, (1) is an optical disc on which desired information can be optically recorded only once, and desired information is written onto this optical disc as a write signal. A main circuit comprising a write signal output means to output, and an optical means to receive a signal from the write signal output means and send an optical signal to the optical disk, (2) a power supply circuit as a power supply means for AC/DC conversion. , (5) is a DC power line from the power supply circuit (2) to the main circuit (1), and (6) is a plug connected to the AC power supply.

Next, the operation will be explained. Power supply circuit (2
) converts the AC supplied via the plug (6) into DC, and the converted DC current is supplied to the main circuit (1) through the DC power line (5).

0004

[Problem to be Solved by the Invention] Since the conventional disk recording and reproducing apparatus as described above is configured as described above, there is a problem that if the power supply is stopped during recording, the address of the recording start and stop point becomes unknown. There is also the problem that the disc cannot be used because it no longer satisfies the divisional writing standards.

The present invention has been made to solve the above problem, and an object of the present invention is to provide a disk recording/reproducing apparatus that can perform recording that satisfies the divisional writing standard even when the power is stopped during recording.

[0006]

[Means for Solving the Problems] A disc recording and reproducing apparatus according to the present invention provides an optical disc on which desired information can be optically recorded only once, and a write signal output that outputs desired information on the optical disc as a write signal. and a main circuit comprising an optical means that receives a signal from the write signal output means and sends an optical signal to the optical disk, a power supply means that supplies power to the main circuit, and detects a state in which power supply from the power supply means is stopped. an emergency power supply means for supplying emergency power;
It is characterized by having the following.

[0007]

[Operation] In the disc recording and reproducing device of this invention,
In the main circuit, a write signal output means outputs desired information as a write signal to an optical disk on which desired information can be recorded only once, and upon receiving a signal from the write signal output means, an optical signal is sent to the optical disk. is transmitted from the optical means, and power is supplied to the main circuit by the power supply means, and the emergency power supply means detects a state in which power supply from the power supply means has stopped, and performs emergency power supply.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, the same reference numerals as in FIG. 3 indicate the same or corresponding parts, and the explanation thereof will be omitted. (3) is a backup battery, and (4) is a signal line for sending the power failure detection binary output detected from the power supply circuit (2) to the main circuit (1).

Next, the operation will be explained. FIG. 2 is a flowchart showing the operation of the embodiment of the present invention, in which (S1) to (S3) indicate each step, respectively.

[0010] When a power outage occurs during recording, the power source is first switched to the backup battery (3). The power failure detection signal is transmitted to the main circuit (1) through the power failure detection signal line (4).

At this point, interrupt processing is performed on the main flow, and the flowchart of FIG. 2 is executed. In step (S1), recording is stopped at a point in accordance with the standard. Then, in step (S2), address data such as a recording start point is recorded at a prescribed position on the disc. Furthermore, in step (S3), the system is stopped and the operation is ended.

In this way, in the embodiment of the present invention, even if a power outage occurs during recording, recording can be stopped in accordance with the standard by using the backup battery and power outage detection.

[0013]

[Effects of the Invention] As explained above, the present invention is configured so that the power supply means supplies power to the main circuit, and the emergency power supply means detects a state in which the power supply from the power supply means is stopped and performs the emergency power supply. If the power supply is stopped during operation, the emergency power supply means supplies emergency power to the main circuit, and the main circuit can be stopped in a manner that satisfies the standards for divided writing, thereby making it possible to accurately record on the disk.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a disc recording/reproducing apparatus according to the present invention.

FIG. 2 is a flowchart showing the operation of the embodiment of the present invention.

FIG. 3 is a block diagram showing the configuration of a conventional device.

[Explanation of symbols]

(1) Main circuit (2) Power supply circuit (3) Backup battery (4) Power outage detection signal line (5) DC power line (6) AC power supply

Claims (1)

[Claims] Claim 1: An optical disc on which desired information can be optically recorded only once, write signal output means for outputting the desired information as a write signal to the optical disc, and a signal received from the write signal output means. In a disc recording and reproducing apparatus that includes a main circuit consisting of an optical means for sending an optical signal to the optical disc, and a power supply means for supplying power to the main circuit, the power supply is started by detecting a state in which the power supply from the power supply means is stopped. What is claimed is: 1. A disk recording and reproducing device characterized by comprising an emergency power supply means for