JP3614298B2 - Recording medium playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording medium reproducing apparatus such as an MD (mini disk).
[0002]
[Prior art]
As a conventional recording medium playback device, for example, an MD (mini disc) playback device, a disc playback unit is built in the main body, and a disc insertion slot for loading an MD disc into the disc playback unit is disposed at a predetermined position on the front panel, Some operation keys for instructing the operation function of the apparatus are arranged in the vicinity of the disk insertion slot, for example, directly under the panel design.
[0003]
[Problems to be solved by the invention]
In the MD reproducing apparatus having such a panel design, since the operation keys are arranged in the vicinity of the disk insertion slot, there are cases where the operation keys are unconsciously pushed when the disk is inserted (inserted). Then, when the disc is inserted, a function unintended by the user is turned on by unintentionally pressing the operation key.
[0004]
It is an object of the present invention to provide a recording medium reproducing apparatus that solves the problems of the conventional apparatus.
[0005]
[Means for Solving the Problems]
According to the recording medium reproducing apparatus of the present invention, a recording medium reproducing unit built in the apparatus main body and a predetermined position on the front panel are arranged to load the recording medium into the recording medium reproducing unit. When the recording medium insertion slot is operated and operated, a command signal for commanding the operation function of the apparatus is supplied to the control means for controlling the overall operation of the apparatus. In a recording medium reproducing apparatus having an operation key, recording medium detecting means for detecting that a recording medium is inserted into the recording medium insertion port is provided, and the control means loads the recording medium into the recording medium reproducing unit. is in a and the recording medium detecting unit, the "recording medium presence" detection signal until the recording medium passes occurs, invalidates the operation of the operation key which has been made in the generation period of the signal, further If the recording medium detecting means in the loading condition occurs the "Mu recording medium" detection signal, and controls to validate the operation of the operation key in a subsequent.
[0006]
According to the recording medium reproducing apparatus of the present invention, as described in claim 2, in the recording medium reproducing apparatus according to claim 1, the control means further includes a recording medium detecting means for detecting a “recording medium present” detection signal. After the occurrence, the operation key is pressed, and when the recording medium detection means recognizes that the same operation key is being pressed even after the “No recording medium” detection signal is generated, the key operation is invalidated. Control is performed as follows.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The drawings show an embodiment of a recording medium reproducing apparatus according to the present invention. FIG. 1 is a partial perspective view showing a state where a disc is hung on a disc insertion slot. 2A and 2B are partial cross-sectional views. FIG. 2A shows a state of FIG. 1 viewed from the side, FIG. 2B shows a state immediately after the disc is pushed in, and FIG. The loading state is shown.
[0009]
1 and 2, reference numeral 1 denotes an apparatus main body, 2 denotes a disk reproducing unit built in the apparatus main body, 3 denotes a front panel, 4 denotes a disk insertion port formed in the front panel 3, 5 denotes a disk presence / absence sensor switch, and 6 denotes An operation key 7 and an MD disk are arranged just below the disk insertion slot 4 of the front panel 3 .
The disk presence / absence sensor switch 5 is composed of, for example, a light emitting element 5a provided at an almost upper middle in the disk insertion slot 4 and a light receiving element 5b provided at the lower part for receiving light from the light emitting element 5a. When the light emitted from 5a reaches the light receiving element 5b, a detection signal indicating "no disk" is generated, and when blocked by the MD disk 7, a detection signal indicating "disk present" is generated. When the operation key 6 is operated, a command signal for instructing the operation function of the apparatus is supplied to a microcomputer (not shown, but hereinafter referred to as a microcomputer) that controls the entire operation of the apparatus. Operation is controlled.
[0010]
In the above configuration, first, as shown in FIG. 2A, when the MD disk 7 is inserted into the disk insertion slot 4, the disk presence sensor switch 5 is turned on, and the MD disk 7 is inserted into the disk insertion slot 4. Is detected, and a detection signal is supplied to the microcomputer.
Next, as shown in FIG. 2 (B), the MD disc 7 is further pushed in with the finger from that state, and then, as shown in FIG. 2 (C), the MD disc 7 is loaded on the disc reproducing unit 2 away from the finger. (Drawn).
[0011]
The detection signal from the disk presence / absence sensor switch 5 is supplied to the microcomputer from when the MD disk 7 is inserted into the disk insertion slot 4 until the MD disk 7 passes the disk presence / absence sensor switch 5 after the finger is released. The
While the disk reproducing unit 2 is in the loading state and the disk presence / absence sensor switch 5 is on, the microcomputer executes a process of invalidating the operation of the operation key 6. Therefore, even if the operation key 6 is accidentally pressed when the MD disc 7 is inserted, the key operation is invalidated, and the reproduction apparatus does not malfunction.
[0012]
Here, the condition for enabling the operation key from the disabled state is as shown in FIG. 2C when the MD disk 7 is drawn into the disk reproducing unit 2 and the OFF of the disk presence / absence sensor switch 5 is detected. It becomes effective when the MD disk 7 passes the position of the disk presence / absence sensor switch 5.
[0013]
Also, as shown in FIGS. 2B and 2C, after the disk presence sensor switch 5 is turned on, the operation key 6 is pressed, the MD disk 7 leaves the finger, and the disk presence sensor switch 5 is turned off. If the same operation key 6 is kept pressed after that, it is determined that the microcomputer is in such a key operation state, the key operation is invalidated, and all other operation keys 6 are also operated. It is invalidated.
[0014]
In addition, after all the operation keys 6 are released once, that is, after the microcomputer determines that the key is in an off state, the operation is controlled to be valid when any one of the operation keys 6 is pressed again.
[0015]
Next, the above operation will be described with reference to the flowchart shown in FIG.
First, in step S1, the microcomputer determines whether or not the disk reproducing unit 2 is loading. If yes, the process proceeds to S2. If the disk presence sensor switch 5 is on, the microcomputer determines. If yes, the process proceeds to S3. The microcomputer determines whether or not the operation key is on.
If the answer to S3 is yes, the process proceeds to S4, the microcomputer invalidates the key process, and then returns to S1. If the answer to S3 is no, the process returns to S1.
If the answer to S2 is no, the process proceeds to S5 and the microcomputer determines whether or not the operation key is off. If the answer is YES, the process proceeds to S6 and the microcomputer determines whether or not the operation key is turned on. If the answer to S6 is yes, the process proceeds to S7, the microcomputer validates the key process, and then ends the operation.
If the answer to S5 is no, the process proceeds to S8, the microcomputer invalidates the key process, and then returns to S1.
[0016]
As described above, when the MD disk 7 is inserted into the disk insertion slot 4 and the disk presence / absence sensor switch 5 is on, the microcomputer invalidates the key operation even if the operation key 7 is accidentally pressed. Thus, the malfunction of the apparatus (function on) can be prevented.
[0017]
【Example】
Although the embodiments of the present invention have been described with respect to MD discs, the present invention is not limited to this, and there are various cases such as recording / reproducing audio source systems such as cassette tapes and video source systems such as video disks. The present invention can be applied to the recording medium reproducing apparatus.
[0018]
【The invention's effect】
According to the present invention, it is possible to prevent erroneous operation of the operation keys when inserting the recording medium.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a recording medium reproducing apparatus according to the present invention, and shows a state where a disc is placed in a disc insertion slot.
2A and 2B are partial cross-sectional views showing an embodiment of a recording medium reproducing apparatus according to the present invention, in which FIG. 2A shows a state when FIG. 1 is viewed from the side, and FIG. (C) shows a state where the disc reproducing unit is loading the disc.
FIG. 3 is a flowchart for explaining the operation of the recording medium playback apparatus according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Disc reproducing part 3 Front panel 4 Disc insertion slot 5 Disc presence sensor switch 5a Light emitting element 5b Light receiving element 6 Operation key 7 MD disk

Claims (2)

A recording medium playback unit built in the apparatus main body, a recording medium insertion slot for loading the recording medium into the recording medium playback unit, arranged in a predetermined position on the front panel, and a vicinity of the recording medium insertion slot In a recording medium reproducing apparatus having an operation key to be operated, a command signal for instructing an operation function of the apparatus is supplied to control means for controlling the overall operation of the apparatus. Recording medium detecting means for detecting that a recording medium has been inserted is provided, and the control means is loading the recording medium into the recording medium reproducing unit and the recording medium detecting means passes through the recording medium. generates between "recording medium present" detection signal, and disabling the operation of the operation key which has been made in the development period of the signal, further, the recording medium detecting hands in the loading state If a is the "recording medium Mu" detection signal generated, the recording medium reproducing apparatus characterized by controlling so as to enable operation of the operation key in a subsequent. 2. The recording medium reproducing apparatus according to claim 1, wherein the control means further comprises: the operation key is pressed after the recording medium detection means generates a “recording medium present” detection signal, and then the recording medium detection means A recording medium reproducing apparatus, characterized in that, when it is recognized that the same operation key is kept pressed even after the “no recording medium” detection signal is generated, the key operation is controlled to be invalidated.

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