JPH03256261A - Disk reproducing device - Google Patents

Abstract

PURPOSE:To eject a disk when the disk cannot be unloaded by unloading the disk again from a loading completion position. CONSTITUTION:When the disk cannot be unloaded to an ejecting completion position within a prescribed time, a loading part 5 is operated under the loading state to load the disk into the loading completion position. Next, the disk is ejected again after rotating a spindle motor of a reproducing part 6 so as to displace the disk in its circumferential position. Consequently, when the disk cannot be unloaded, since the unloading of the disk is performed again from the loading completion position, and hence the disk is changed in its circumferential position to be remountable on a tray, etc., the disk is ejected.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a disc playback device such as a compact disc player or a jukebox that plays back information recorded on a disc such as a compact disc or record. .

[Conventional technology]

Hereinafter, a compact disc player using a disc changer will be explained as an example of a disc playback device.

In a compact disc player that uses a disc changer, when a disc changer containing multiple discs is installed in the loading unit and you operate the input key on the operation unit to specify loading, the disc will be rotated with the clamper. Load the information held between the tables until it reaches the loading completion position where it can be reproduced.

Therefore, after the loading of the disc is completed, the information recorded on the disc can be reproduced by the reproducing unit by operating the input key on the operating unit.

After the reproduction of the information from the disc is completed, when unloading is designated by operating the input key on the operation unit, the disc is unloaded to the eject completion position in the disc changer.

[Problem to be solved by the invention]

Conventional disc playback devices are configured as described above, so for example, in the process of unloading a disc,
If the disc cannot be ejected because it cannot be placed in the correct position on the tray of the disc changer, or if the disc is not ejected because the disc ridge is hitting a part of the disc changer, you may have to repeatedly press the operation panel to eject the disc. There was an inconvenience that the disc could not be ejected even if the human key was operated.

The present invention has been made to solve the above-mentioned inconveniences, and provides a disc playback device that can eject a disc.

[Means to solve the problem]

The disc playback device according to the present invention is provided with a timer unit that measures time, and when the control unit causes the disc to be ejected based on the output of the operation unit, it operates the loading unit to an unloading state and resets the timer unit. If the disc cannot be unloaded to the eject completion position within a predetermined time based on the output of the timer unit, the loading unit is operated to the loading state, the disc is loaded to the loading completion position, and the circumferential direction of the disc is After rotating the spindle motor of the playback section to displace the position, the loading section is operated to an unloading state to eject the disk again.

[For production]

If the control unit of the disc playback device according to the present invention cannot uncode the disc to the ejection completion position within a predetermined time, it operates the loading unit to the loading state to load the disc to the loading completion position, and loads the disc in the circumferential direction of the disc. After rotating the spindle motor of the reproducing section to displace the position of the disc, the disc is ejected again.

Therefore, if the disk cannot be unloaded, the disk must be unloaded again from the loading completion position, so the circumferential position of the disk can be changed and the disk can be reloaded onto a tray, etc. It can be ejected.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a compact disc player according to an embodiment of the present invention, which uses a disc changer.

In FIG. 1, reference numeral 1 designates an operating section, which is used to specify the operating mode of a loading section 5, a reproducing section 6, etc., which will be described later, by operating a human key.

Reference numeral 2 indicates a loading completion detection section, in which information can be reproduced by moving the tray in the loading section 5 to take out the disc at the ejection completion position located in the disc changer from the disc changer, and holding it between a clamper and a turntable in the playback section 6. It detects that loading has been completed at a certain loading completion position and outputs a loading completion signal.

That is, the loading completion detection section 2 detects whether the disk is located at the loading completion position or the clamper is located at the loading completion position, and outputs a loading completion signal.

Reference numeral 3 designates a disc detection unit, which receives a disc presence/absence detection signal when the loading unit 5 detects the presence or absence of a disc in the process of loading the disc from the ejection completion position to the loading completion position, that is, in the process of horizontally moving the tray of the disc changer. It's something to output.

Reference numeral 4 denotes an ejection completion detection section, which detects that the disk is unloaded from the loading completion position to the ejection completion position by the loading section 5 and outputs an ejection completion signal.

That is, the eject completion detection section 4 detects that the tray of the disc changer has been returned to the storage position and outputs an ejection completion signal.

5 indicates a loading section, which loads the disc from the eject completion position to the loading completion position,
This is to unload the disc from the loading completion position to the ejection completion position.

Reference numeral 6 denotes a reproducing section, which reproduces information recorded on the disk and outputs a reproduced signal, and includes a spindle motor for rotating the disk, a pickup for reading information, and the like.

Reference numeral 7 indicates a timer unit that measures time, and 8 indicates a display unit that displays various information.

9 indicates a control unit having a built-in memory for storing each information;
Loading unit 5 to display unit 8 based on the outputs of operation unit 1 to tamper completion detection unit 4, playback unit 6 and timer unit 7
is controlled as described below.

Note that the disc changer described above includes a plurality of trays for accommodating discs.

FIG. 2 is a flowchart for explaining the loading operation, and ST1-5T6 indicate each step.

FIG. 3 is a flowchart for explaining the unloading operation, and 5TII-5T24 indicate each step.

Next, the loading operation will be explained based on FIG. 2.

First, with the disc changer attached to the loading section 5, when loading is designated by operating the manual key of the operation section 1 (step 5T1), the control section 9 operates the loading section 5 to the loading state. At the same time as starting the loading of the disc, the timer unit 7 is reset and scooted (step 5T2).

Then, it is determined whether the loading of the disc has been completed based on the loading completion signal from the loading completion detection section 2 (step 5T3). If the loading of the disc has not been completed, it is determined based on the output of the timer section 7 for a predetermined time T5. It is determined whether (for example, 10 seconds) has elapsed (step 5T4).

Next, if it is determined in step ST4 that the predetermined time TL has not elapsed, the process proceeds to step ST3.

Further, if the loading of the disc is completed as determined in step ST3, the loading section 5 is stopped (step 5T5).

Furthermore, if it is determined in step ST4 that the predetermined time TL has elapsed, the loading section 5 is stopped and the display section 8 is made to display that the disk is not being loaded, for example, that there is a failure (step 5T6).

The disc size can be detected, for example, by capturing the disc presence detection signal from the disc detection unit 3 at predetermined time intervals in accordance with the rotation speed of the tray, during the process of rotating the tray relative to the disc changer. The control unit 9 can detect whether the disc is 12 cm or 8 cm attached to the adapter, and stores the detected disc size in the memory.

Therefore, after step ST5, by operating the input key of the operating section 1, the reproducing section 6 can be operated to reproduce the information recorded on the disc.

After step ST6, corresponding processing or measures are performed.

Next, the unloading operation after the reproduction of information from the disc is completed will be explained based on FIG.

First, when unloading is specified by operating the input key of the operation unit 1 (step 5TII), the control unit 9 stores a value n corresponding to the number of unloading operations in the memory as 1 (step 5T12). , loading section 5
is operated in an unloading state to start unloading the disk (step 5T13).

Then, it is determined whether the value n is less than or equal to N (for example, 3) (step 5T14), and if n is less than or equal to N, the timer section 7 is reset and started (step 5T1).
5) Determine whether a predetermined time TE (for example, 10 seconds) has elapsed based on the output of the timer section 7 (step 5T).
16).

Next, if it is determined in step 5T16 that the predetermined time TE has not elapsed, it is determined whether the ejection of the disc has been completed based on the output of the eject completion detection section 4 (step 5T17), and if the ejection of the disc has been completed. If so, proceed to step 5T16.

Further, if the predetermined time TE has elapsed as determined in step ST1.6, the loading unit 5 is operated to the loading state to start loading the disc (step 5T18), and then when the loading of the disc is completed (step 5T19), to determine whether the disc is 12 cm.Step 5T20), the disc is 12 cm.
If the disc is 12 cm, then kick the spindle motor for 2 seconds to apply the brakes (step 5T21), and if the disc is not 12 cm, then the disc is 8 cm.
Therefore, the spindle motor is kicked for 0.8 seconds to apply the brake in response to 8CT11 (step 5T22).

Next, after step 5T21 or 5T22, the memory value n is incremented by one (step 5T23), and then the process proceeds to step 5T13.

Further, if the value n is greater than or equal to N in the determination at step S'r14, the loading section 5 is stopped and the display section 8 is stopped.
A message indicating that the disk has not been unloaded, for example, a failure is displayed on the disk (step 5T24).

As described above, according to this embodiment, when the disc 1 2 cannot be unloaded from the loading completion position to the ejection completion position within a predetermined time, for example, the disc cannot be placed in the correct position on the tray during the unloading process. If you are unable to eject the disc without the disc changing, or if the disc rises up against a part of the disc changer and cannot be ejected, load the disc to the loading completion position, rotate it to avoid integer rotation, and then try again to eject the disc. Since the disc is ejected, the disc can be placed in the correct position on the tray, and since the disc ridge is in a different position, the disc can be ejected.

After step 5T24, corresponding processing or measures are performed.

In addition, in the second embodiment, a compact disc player to which a disc changer can be installed was used as an example.
It goes without saying that the present invention can also be applied to ordinary compact disc players, jukeboxes, and other disc playback devices that cannot be equipped with a disc changer.

〔Effect of the invention〕

As described above, according to the present invention, if the disc cannot be unloaded to the ejection completion position within a predetermined time, the loading unit is operated to the loading state to load the disc to the loading completion position, and the disc is positioned in the circumferential direction. Since the disc is ejected again after the spindle motor of the reproducing unit is rotated to displace the disc, there is an effect that the disc can be ejected.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a compact disc player according to an embodiment of the present invention, and FIGS. 2 and 3 are flow charts for explaining the operation. 1... Operation unit, 2... Loading completion detection unit, 3
... Disc detection section, 4... Ejection completion detection section, 5... Loading section, 6... Playback section, 7...
Timer section, 9... control section. 3 4

Claims (1)

[Claims] The loading section is operated to an unloading state based on the output of the operation section, and the disc is unloaded from the loading completion position where information can be reproduced, where the disc is held between the clamper and the turntable, to the original ejection completion position. In a disc playback device equipped with a control section that controls loading and ejecting the disc, a timer section for measuring time is provided, and when the control section is caused to eject the disc based on the output of the operation section, The loading section is operated to an unloading state, and the timer section is reset and started, and if the disc cannot be unloaded to the ejection completion position within a predetermined time based on the output of the timer section, the loading section is operated in a loading state to load the disc to the loading completion position, and after rotating a spindle motor of the reproducing unit to displace the circumferential position of the disc, the loading unit is brought into an unloading state. A disc playback device characterized in that it is configured to operate to eject the disc again.