JP2775753B2 - Optical multi-disc player - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc reproducing apparatus such as a plurality of compact disc players.

2. Description of the Related Art A conventional optical disc reproducing apparatus of this type has a configuration as shown in FIG. That is, it is a disk reproducing device including a disk switching device 11 for switching a plurality of disks according to a command from the logical operation device 13 and a disk reproducing device 12 for controlling reproduction of the disk according to a command from the logical operation device 13.

Problems to be Solved by the Invention The conventional optical disk reproducing apparatus has the following problems. That is, since the signal level of a signal recorded on a disc often differs for each disc, when a plurality of discs are exchanged and reproduced, the output level changes every time the discs are exchanged.

The present invention has been made to solve the above-described conventional problems, and when a plurality of discs are exchanged and played,
It is an object of the present invention to provide an optical disc reproducing apparatus whose output level does not change much even when discs are replaced.

Means for Solving the Problems In order to solve the above problems, the present invention provides a disk switching device that controls the switching of a plurality of optical disks,
A disk reproduction device that controls reproduction of a disk, a signal level detection unit that detects a peak level of a reproduced signal, and a storage device that stores a peak level of each disk,
An output level control device for controlling the output level of the reproduced signal; and a disk reproducing device for reproducing the disk, detecting the peak level of the disk being reproduced from the output of the signal level detection unit, and storing the peak level in the storage device; A logical operation device for exchanging disks with a disk exchanging device, storing peak levels of a plurality of disks in a storage device, and controlling an output level in accordance with the stored peak levels.

Operation The operation of the present invention by the above means is as follows. That is, by storing the peak levels of a plurality of disks in a storage device and controlling the output level in accordance with the stored peak levels, when the plurality of disks are exchanged and reproduced, the output level changes even if the disks are exchanged. It does not.

Embodiment Hereinafter, an optical disc 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 an embodiment of the present invention. The disk switching device 1 controls the replacement of a plurality of disks according to a command from the logical operation device 6, and the disk playback control according to a command from the logical operation device 6. Disc reproducing device 2, signal level detecting unit 3 for detecting peak levels of reproduced signals, storage device 4 for storing peak levels of a plurality of discs, and output level control for controlling output levels of reproduced signals 2 shows a disk reproducing apparatus including the apparatus 6.

FIG. 2 is a flowchart showing the main part of the operation of the embodiment of the present invention. In step 1, the disk replacement device 1 pulls out the first disk in response to a command from the logical operation device 6, and in step 2 whether or not a disk exists. Is determined, and if it does not exist, step 5 and subsequent steps are executed.
Then, the disk reproducing device 2 reproduces the disk in accordance with the command from the logical operation device 6, detects the peak level from the output of the signal level detecting section 3, stores the peak level detected in step 4 in the storage device 4, and in step 5 It is determined whether or not all the disks have been completed, and if not all the disks have been completed, the disk replacement device 1 replaces the disk with the next disk in accordance with a command from the logical operation device 6 in step 6 and executes step 2 and subsequent steps. . Step 7 when all disks are finished
And the disk swapping device 1 according to a command from the logical operation device 6
Is pulled out of the specified disk, and the logical operation device 6 is extracted from the peak level stored in the storage device 4 in step 8.
The output level control device 5 controls the output level in accordance with the instruction of (1), the disk reproducing device 2 reproduces the disk in accordance with the instruction of the logical operation device 6 in step 9, and the logical operation device 6 performs all reproduction (for example, the user) in step 10. It is determined whether or not playback is completed in accordance with the sequence programmed in advance. If playback is completed, the process ends.

By performing the above procedure, when a plurality of discs are exchanged and reproduced, the output level does not change even if the discs are exchanged.

As described above, the present invention provides a disk switching device for controlling the switching of a plurality of optical disks, a disk reproducing device for controlling the reproduction of a disk, and a signal level for detecting a peak level of a reproduced signal. A detection unit, a storage device that stores a peak level of each disk, and an output level control device that controls an output level of a reproduced signal,
The disc is reproduced by the disc reproducing device, the peak level of the disc being reproduced is detected from the output of the signal level detecting section, and stored in the storage device.The disc is replaced by the disc replacing device, and the peak levels of a plurality of discs are stored. By providing a logical operation device that stores the data in a device and controls the output level in accordance with the stored peak level, when a plurality of disks are exchanged and played, even if the disks are exchanged, the output level does not change much. And the usability can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of an optical disc reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a flowchart showing the main part of the operation of the apparatus, and FIG. 3 is a block diagram of a conventional optical disc reproducing apparatus. It is. 1 ... Disc replacement control device, 2 ... Disc playback control device, 3 ... Signal level detector, 4 ... Storage device,
5 ... output level control device, 6 ... logical operation device, 11 ...
... Disk replacement control device, 12 disk playback control device, 13 logical operation device.

Claims (1)

(57) [Claims] 1. A disk switching device for controlling the switching of a plurality of optical disks, a disk reproducing device for controlling the reproduction of a disk, a signal level detecting section for detecting a peak level of a reproduced signal, A storage device for storing the peak level, an output level control device for controlling the output level of the reproduced signal, and a disk reproducing device for reproducing the disk. From the output of the signal level detection unit, the peak level of the disk being reproduced is determined. Detect and store in the storage device, swap the disks with the disk swapping device, store the peak levels of multiple disks in the storage device,
An optical multi-disc reproducing apparatus comprising: a logical operation device for controlling an output level in accordance with a stored peak level.