JPH073729B2 - Disc player - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a disc reproducing apparatus such as a compact disc player or a jukebox for reproducing information recorded on a disc such as a compact disc or a record. .

[Conventional technology]

Hereinafter, a compact disc player using a disc changer as a disc reproducing device will be described as an example.

In a compact disc player that uses a disc changer, when the loading key is loaded with a disc changer containing multiple discs and the loading key is specified by operating the input keys on the operating unit, the disc is placed between the clamper and turntable. Loading is performed up to the loading completion position where the sandwiched information can be reproduced.

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

Then, after the reproduction of the information from the disc is completed, the unload key is designated by operating the input key of the operation unit, so that the disc is unloaded to the eject completion position in the disc changer.

[Problems to be Solved by the Invention]

Since the conventional disc reproducing apparatus is configured as described above, for example, in the process of unloading a disc,
If you cannot eject the disc because it cannot be placed in the correct position on the disc changer tray, or if the disc flash does not hit the disc changer part of the ejector and you cannot eject it, repeat the operation to eject the disc. There is a disadvantage that the disc cannot be ejected even if the input key of the unit is operated.

The present invention has been made to solve the above-described inconvenience, and provides a disc reproducing apparatus capable of ejecting a disc.

[Means for Solving the Problems]

The disc reproducing apparatus according to the present invention is provided with a timer unit for measuring time, and when the control unit ejects the disc based on the output of the operation unit, the loading unit is operated in the unloading state and the timer unit is reset. 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 in the loading state to load the disc to the loading completion position, and After rotating the spindle motor of the reproducing unit to displace the position, the loading unit is operated in the unloading state to eject the disc again.

[Work]

If the disc reproducing apparatus according to the present invention cannot unload the disc to the ejection completion position within a predetermined time, the loading unit operates the loading unit to load the disc to the loading completion position, and position the disc in the circumferential direction. After rotating the spindle motor of the reproducing unit to displace the disc, the disc is ejected again.

Therefore, if the disc cannot be unloaded, the disc will be unloaded again from the loading completion position, and the disc can be repositioned on the tray or the like by displacing the disc in the circumferential direction. Can be ejected.

〔Example〕

 An embodiment 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 denotes an operation unit for designating operation modes such as a loading unit 5 and a reproducing unit 6 described later by operating input keys.

Reference numeral 2 denotes a loading completion detection unit, which can eject the disc at the ejection completion position located in the disc changer from the disc changer by moving the tray at the loading unit 5, and hold the information between the clamper and the turntable of the reproducing unit 6 for information reproduction. The loading completion signal is output by detecting the loading at a different loading completion position.

That is, the loading completion detector 2 detects whether the disc 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 denotes a disc detection unit, which is a disc presence / absence detection signal for detecting the presence / absence of a disc in the process in which the loading unit 5 loads the disc from the ejection completion position to the loading completion position, that is, in the process of moving the tray of the disc changer in the horizontal direction. It is what is output.

Reference numeral 4 denotes an eject completion detection unit, which detects that the loading unit 5 has unloaded the disc from the loading completion position to the ejection completion position and outputs an ejection completion signal.

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

Reference numeral 5 denotes a loading unit, which loads a disc from an eject completion position to a loading completion position,
The disc is unloaded from the loading completion position to the ejection completion position.

A reproducing unit 6 reproduces information recorded on the disc and outputs a reproduction signal, and includes a spindle motor for rotating the disc and a pickup for reading the information.

Reference numeral 7 denotes a timer unit for measuring time, and 8 denotes a display unit for displaying various information.

Reference numeral 9 denotes a control unit having a built-in memory for storing each information,
The loading unit 5 to the display unit 8 based on the outputs of the operation unit 1 to the ejection completion detection unit 4, the reproduction unit 6, and the timer unit 7.
Is controlled as described below.

The disc changer described above includes a plurality of trays for accommodating discs.

FIG. 2 is a flow chart for explaining the loading operation, and ST1 to ST6 show each step.

FIG. 3 is a flow chart for explaining the unloading operation, and ST11 to ST24 show each step.

Next, the loading operation will be described with reference to FIG.

First, when the loading key is operated by operating the input keys of the operation unit 1 with the disc changer mounted on the loading unit 5 (step ST1), the control unit 9 causes the loading unit 5 to move to the loading state. Loading is started, and the timer unit 7 is reset and started (step ST2).

Then, it is determined whether the loading of the disc is completed based on the loading completion signal of the loading completion detecting unit 2 (step ST3). If the loading of the disc is not completed, the predetermined time T is output based on the output of the timer unit 7. _It is determined whether _L (for example, 10 seconds) has elapsed (step ST4).

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

If the disc loading is completed in step ST3, the loading section 5 is stopped (step ST5).

Further, if the predetermined time _TL has elapsed in the determination of step ST4, the loading section 5 is stopped and the display section 8 displays that the disc is not loaded, for example, a failure (step ST6). .

The disc size is detected by, for example, in the process of rotating the tray with respect to the disc changer, by capturing the disc presence / absence detection signal of the disc detection unit 3 at a predetermined time interval in correspondence with the rotation speed of the tray, But
The control unit 9 can detect whether it is 12 cm or 8 cm attached to the adapter, and stores the detected disk size in the memory.

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

Then, after step ST6, a corresponding process or measure is performed.

Next, the unloading operation after the reproduction of the information from the disc is completed will be described with reference to FIG.

First, when unloading is designated by operating the input key of the operation unit 1 (step ST11), the control unit 9 stores a value n corresponding to the number of times of unloading in the memory as 1 (step ST12), and then loads it. The section 5 is operated to the unloading state to start the unloading of the disc (step ST13).

Then, it is determined whether the value n is N (for example, 3) or less (step ST14). If n is N or less, the timer unit 7 is reset and started (step ST15), and then the timer unit 7 is started. Based on the output of the predetermined time T _E (for example, 10 seconds)
Is determined (step ST16).

Next, if the predetermined time T _E has not elapsed in the determination in step ST16, it is determined whether the disc ejection is completed based on the output of the ejection completion detection unit 4 (step ST
17) If the disc ejection has not been completed, the process proceeds to step ST16.

If the predetermined time T _E has elapsed in the determination of step ST16, the loading section 5 is operated to the loading state to start loading the disc (step ST
18) Once the disc is loaded (step
ST19), determine whether the disc is 12 cm (step ST
20) If the disc is 12 cm, apply a spindle motor, for example, kick for 2 seconds to brake the disc corresponding to 12 cm (step ST21). If the disc is not 12 cm, 8 cm
Therefore, the spindle motor corresponding to 8 cm is kicked for 0.8 seconds to brake (step ST2
2).

Next, after step ST21 or ST22, the memory value n is set to 1
After increasing by one (step ST23), the process proceeds to step ST13.

If the value n is N or more in the determination in step ST14, the loading unit 5 is stopped and the display unit 8 displays that the disc has not been unloaded, for example, that it is in failure (step ST24).

As described above, according to this embodiment, when the disc 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 regular position of the tray during the unloading process. If the disc cannot be ejected, or if the disc flash hits a part of the disc changer and cannot be ejected, load the disc to the loading completion position, rotate it so that it does not reach an integer number of revolutions, and then eject the disc again. As a result, the disc can be placed on the regular position of the tray, and the burrs of the disc are at different positions, so that the disc can be ejected.

Then, after step ST24, a corresponding process or measure is performed.

In the above embodiment, the compact disc player to which the disc changer can be attached has been described as an example, but it is needless to say that the present invention can be applied to a disc reproducing device such as a normal compact disc player or a jukebox to which the disc changer cannot be attached.

〔The invention's effect〕

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

[Brief description 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 flowcharts for explaining the operation. 1 ... Operation part, 2 ... Loading completion detection part, 3 ...
Disc detection unit, 4 ... Ejection completion detection unit, 5 ...
Loading section, 6 ... Playback section, 7 ... Timer section, 9 ...
… Control unit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Sasaki 25-1 Nishimachi, Yamada character, Kawagoe City, Saitama Prefecture Pioneer Co., Ltd. Kawagoe Factory (56) Reference JP-A-63-104258 (JP, A)

Claims (1)

[Claims] 1. A loading unit is operated in an unloading state based on an output of an operating unit to unload the disc from an information reproducible loading completion position where the disc is sandwiched by a clamper and a turntable to an original ejection completion position. In a disc reproducing apparatus including a control unit that controls to eject the disc, a timer unit that measures time is provided, and when the control unit ejects the disc based on the output of the operation unit, When the loading unit is operated in the unloading state, the timer unit is reset and started, and 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 activated. Move to loading state Then, the disc is loaded to the loading completion position, the spindle motor of the reproducing unit is rotated to displace the position of the disc in the circumferential direction, and then the loading unit is operated to the unloading state. A disc reproducing apparatus having a structure for ejecting again.