JP2004319026A - Medium transport apparatus and information processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To normally transport a medium even when the presence/nonpresence of the medium can not be detected. <P>SOLUTION: In an information processor 3, when a disk 2 is inserted into an insertion/ejection slot 5 and a first switch 7 detects the disk 2, a loading driving part 4 draws in the disk 2, whereas when a play key 12b is operated when the first switch 7 does not detect the disk 2, the disk 2 is drawn in. This can forcedly draw in the disk 2 even when the disk 2 has high transmittance and the first switch 7 can not detect the disk 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a medium transport device and an information processing device that detect the presence or absence of a medium by a detection unit and start and stop the transport of a medium. Specifically, in addition to the detection result of the detection unit, by starting and stopping the conveyance of the medium by a predetermined operation and timing, even if the detection unit cannot detect the presence or absence of the medium, the medium can be normally conveyed. It is like that.
[0002]
[Prior art]
2. Description of the Related Art In many apparatuses for transporting a medium, sensors for detecting a medium are provided in a transport path, and the presence or absence of a medium is detected, so that transport can be started or stopped. In a so-called slot-in type device in which an audio device such as a CD (Compact Disc) player can take in a compact disc from a slit-shaped insertion / ejection opening and mount it on a turntable, a sensor provided near the insertion / ejection opening is provided. Detects the presence or absence of a compact disk, and controls the start and stop of transport (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent No. 2918373
[0004]
[Problems to be solved by the invention]
As sensors for detecting the presence or absence of a medium, there are mechanical detection means using displacement of a lever and the like, and optical detection means using light receiving and emitting elements. A disk-shaped recording medium typified by a compact disk has a label printed or affixed to the surface thereof, but in recent years, disks having high transmittance have been distributed. In the detecting means using infrared rays as the light emitting element, if the transmittance is increased by 2 to 3%, light may be transmitted. In this case, the detecting means cannot detect the disk despite the presence of the disk.
[0005]
For this reason, in a device that detects the presence / absence of a disc by the detection means and starts or stops the transfer, there is a problem that the transfer cannot be started or stopped normally when a disk with a high transmittance is inserted. Was.
[0006]
SUMMARY An advantage of some aspects of the invention is to provide a medium transport apparatus and an information processing apparatus which can transport a medium even when the presence or absence of a medium cannot be detected. .
[0007]
[Means for Solving the Problems]
In order to solve the above-described problem, a medium transport device according to the present invention includes a medium transport device that transports a medium between a first position and a second position; Detecting means for detecting the presence / absence of a medium, operating means for receiving an operation, and when the detecting means detects the medium, it controls the carrying means to execute a carrying operation of the medium from the first position to the second position. And control means for controlling the transport means to execute a medium transport operation when a transport command is received from the operation means in a state where the detection means does not detect the medium.
[0008]
According to the medium transport device of the present invention, when a medium is present at the first position, if the detecting means can detect the medium, the transport of the medium from the first position to the second position is started. On the other hand, when the detection unit cannot detect the medium at the first position, the conveyance of the medium from the first position to the second position is started by, for example, a user operation.
[0009]
Thus, even if the detection unit cannot detect the medium even though the medium is present at the first position, the operation of transporting the medium can be performed. Therefore, for example, when a light receiving / emitting element is used as a detecting unit for cost reduction, if the transmittance of the medium is high, there is a possibility that the detecting unit may not be able to detect the medium. And restrictions on the types of media that can be conveyed can be reduced.
[0010]
In addition, a medium transport device according to the present invention is a media transport device that transports a medium between a first position and a second position, wherein a transport unit that transports the medium and a presence or absence of the medium at the second position are detected. Detecting means, an operating means for receiving an operation, and receiving a transport command from the operating means, controlling the transport means to execute a transport operation of the medium from a first position to a second position, and When the medium is no longer detected from the state in which is detected, the transport operation is stopped, and when the medium is transported, if the detecting means does not detect the medium, the transport operation is performed after a predetermined time has elapsed. Control means for stopping.
[0011]
According to the medium transport device of the present invention, when the medium is transported from the first position to the second position, the transport is stopped when the detecting unit stops detecting the medium. On the other hand, if the detecting means cannot detect the presence or absence of the medium, the conveyance of the medium is stopped after a predetermined time has elapsed.
[0012]
Thus, even if the detection unit cannot detect the presence or absence of the medium, the conveyance of the medium can be stopped at a predetermined position. Therefore, for example, when a light emitting / receiving element is used as a detecting means for cost reduction, if the medium has a high transmittance, the detecting means may not be able to detect the medium. This can reduce the restrictions on the types of media that can be conveyed.
[0013]
An information processing apparatus according to the present invention employs the above-described medium transport device. That is, the medium includes an insertion / ejection port for a medium, a processing unit that performs processing on the medium, a conveyance unit that conveys the medium between the insertion / ejection port and the processing unit, and a light receiving / emitting element. Detecting means for detecting the presence / absence, operating means for receiving a user's operation, and when the detecting means detects the medium, controls the transporting means to execute a pull-in operation of the medium from the insertion / ejection opening, and the detecting means And control means for controlling the transport means to execute a medium pull-in operation when a pull-in instruction is received from the operating means in a state where no is detected.
[0014]
According to the information processing apparatus of the present invention, when a medium is inserted into the insertion / ejection port, if the detecting means can detect this medium, the operation of pulling in the medium from the insertion / ejection port is started. On the other hand, when the detection unit cannot detect the medium inserted into the insertion / ejection port, the operation of pulling in the medium from the insertion / ejection port is started by the operation of the user.
[0015]
Thus, even when the medium is inserted into the insertion / ejection port and the detecting unit cannot detect the medium, the medium can be pulled in. Therefore, when the optical detection means including the light receiving and emitting elements is used for cost reduction, the medium may not be detectable if the transmittance of the medium is high, but even with such a medium, the pull-in operation is performed. And the restrictions on the types of media that can be processed can be reduced.
[0016]
Further, an information processing apparatus according to the present invention employs the above-described medium transport apparatus. That is, the medium includes an insertion / ejection port for a medium, a processing unit that performs processing on the medium, a conveyance unit that conveys the medium between the insertion / ejection port and the processing unit, and a light receiving / emitting element. Detecting means for detecting the presence / absence, operating means for receiving a user's operation, and upon receiving a discharge command from the operating means, controls the transport means to execute a discharging operation of the medium from the processing section, and the detecting means When the medium is no longer detected from the detection state, the discharging operation is stopped, and when the medium discharging operation is performed, if the detecting means has not detected the medium, the discharging operation is stopped after a predetermined time has elapsed. And control means for performing the control.
[0017]
According to the information processing apparatus of the present invention, when the medium is ejected from the processing unit to the insertion / ejection port, the ejection operation of the medium is stopped when the detecting unit stops detecting the medium. On the other hand, if the detecting means cannot detect the presence or absence of the medium, the discharging operation of the medium is stopped after a predetermined time has elapsed.
[0018]
Thus, even if the detecting means cannot detect the presence or absence of the medium, the medium being discharged can be stopped at a predetermined position. Therefore, when the optical detection means including the light receiving and emitting elements is used for cost reduction, it may not be possible to detect the medium if the transmittance of the medium is high. Can be performed, and restrictions on the types of media that can be processed can be reduced.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a medium transport device and an information processing device of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration example of an information processing device in which the medium transport device according to the present embodiment is incorporated.
[0020]
The medium transport device 1 according to the present embodiment detects the presence or absence of a disk-shaped recording medium (hereinafter, referred to as a disk 2) such as a compact disk, which is an example of a medium, and starts transport of the disk 2 or transport of the disk 2. Even if it is not possible to detect the presence / absence of the disk 2 by a device for stopping, normal conveyance can be performed.
[0021]
The information processing apparatus 3 according to the present embodiment is, for example, a CD player that reproduces information signals recorded on the disk 2. The information processing apparatus 3 transports the disk 2 to take in and output to the outside. The device 1 is incorporated.
[0022]
The medium transport device 1 includes a loading drive unit 4 as an example of a transport unit, and is provided between an insertion / ejection port 5 of the disk 2 and a processing unit 6 that performs a process of reproducing an information signal recorded on the disk 2. The disk 2 is transported. Here, when the disc 2 is transported from the insertion / ejection port 5 to the processing section 6, the insertion / ejection port 5 is at the first position and the processing section 6 is at the second position. When the disc 2 is transported from the processing section 6 to the insertion / ejection port 5, the processing section 6 is at the first position and the insertion / ejection port 5 is at the second position.
[0023]
The loading drive unit 4 includes a roller 4a for transporting the disk 2, a motor 4b for driving the roller 4a to rotate, and a transmission mechanism such as a belt for transmitting the driving force of the motor 4b to the roller 4a.
[0024]
The insertion / ejection port 5 is provided on the front of the housing 3a of the information processing device 3, and is a slit-shaped opening slightly wider than the diameter and thickness of the disk 2. The processing unit 6 includes a turntable 6a that chucks and rotates the disk 2. The processing unit 6 further includes a motor (not shown) for rotating the turntable 6a, a mechanism for chucking and releasing the chucking of the disc 2 with respect to the turntable 6a, and an optical device for reading an information signal of the disc 2. A pickup device and the like are provided.
[0025]
In the loading drive unit 4, when the roller 4 is rotated in the direction of arrow a1 by the motor 4b, the disk 2 in contact with the roller 4a is transported in the direction of arrow b1. That is, the disc 2 is transported from the insertion / ejection port 5 toward the processing unit 6. When the roller 4a is rotated in the direction of arrow a2, the disk 2 in contact with the roller 4a is transported in the direction of arrow b2. That is, the disk 2 is transported from the processing unit 6 toward the insertion / ejection port 5.
[0026]
The operation of transporting the disk 2 inserted into the insertion / ejection opening 5 in the direction of arrow b1 and chucking it on the turntable 6a is called a loading operation. The disk 2 is removed from the turntable 6a and transported in the direction of arrow b2. The operation of discharging from the insertion / ejection port 5 is called an unloading operation.
[0027]
A first switch 7 is provided as an example of a detecting unit in order to start transporting the disk 2 by this loading operation. Further, a second switch 8 is provided as an example of a detecting means for stopping the conveyance of the disk 2 by the unloading operation.
[0028]
The first switch 7 and the second switch 8 each include a pair of light receiving and emitting elements. For example, the first switch 7 and the second switch 8 include light emitting diodes (LED: Light Emitting Diode) 7a and 8a as light emitting elements, and a photodiode (PD) as a light receiving element. : Photo Diode) 7b, 8b.
[0029]
The first switch 7 is provided with an LED 7a and a PD 7b facing each other so as to sandwich the surface of the disk 2 conveyed by the loading drive unit 4. Similarly, the second switch 8 is provided with an LED 8a and a PD 8b facing each other so as to sandwich the surface of the disk 2 conveyed by the loading drive unit 4.
[0030]
Here, as an example, the output of the first switch 7 is turned off when the light of the LED 7a reaches the PD 7b, and turned on when the light of the LED 7a is blocked and does not reach the PD 7b. Similarly, as an example, the output of the second switch 8 is turned off when the light of the LED 8a reaches the PD 8b, and turned on when the light of the LED 8a is blocked and does not reach the PD 8b.
[0031]
FIG. 2 is an explanatory diagram showing a positional relationship between the first switch 7 and the second switch 8. The first switch 7 and the second switch 8 detect the presence or absence of the disc 2 at the insertion / ejection port 5. The positional relationship between the first switch 7 and the second switch 8 is such that the first switch 7 is provided closer to the insertion / ejection port 5 than the second switch 8 is. As a result, during loading, the disc 2 is first inserted into the insertion / ejection port 5 and thereby interrupts the optical path of the LED 7a, and the output of the first switch 7 normally changes from "off" to "on". I do.
[0032]
Also, at the position where the disk 2 is chucked on the turntable 6a, the optical paths of the LEDs 8a and 7a are blocked by the disk 2, and both the outputs of the first switch 7 and the second switch 8 are normally "on". It has become. Thereby, at the time of unloading, first, the output of the second switch 8 changes to "OFF" from the state where the outputs of the first switch 7 and the second switch 8 are both "ON".
[0033]
Here, the second switch 8 is set so that the position of the disk 2 when the output of the second switch 8 changes to “OFF” during unloading is a position where the disk 2 does not drop from the insertion / ejection port 5. The position is set.
[0034]
The positional relationship between the first switch 7 and the second switch 8 and the loading drive unit 4 is such that when the disc 2 is inserted through the insertion / ejection port 5, the leading end of the disc 2 is detected by the first switch 7. , The roller 4 a is in a positional relationship where the roller 4 a can come into contact with the disk 2. As a result, when the disk 2 is inserted from the insertion / ejection port 5 and the leading end of the disk 2 reaches the position detected by the first switch 7 and the output of the first switch 7 changes to "ON", the rollers 4a Thus, the disk 2 can be transported.
[0035]
A third switch 9 is provided to detect that the disc 2 is chucked on the turntable 6a by the loading operation and that the disc 2 comes off the turntable 6a by the unloading operation. The third switch 9 is a mechanical switch that operates by the chucking operation of the disc 2 by the turntable 6a. In a state where the disc 2 is not chucked by the turntable 6a, for example, the output is “OFF”. When 2 is chucked on the turntable 6a, the output changes to "ON".
[0036]
A panel 10 is provided on the front of the information processing device 3. Further, a panel driving unit 11 as an example of a driving unit is provided to open and close the panel 10. The panel drive unit 11 includes a guide member (not shown) that slidably supports the panel 10, a motor (not shown) that slides the panel 10, a sensor (not shown) that detects opening and closing of the panel 10, and the like.
[0037]
3A and 3B are external perspective views of the information processing apparatus 3, in which FIG. 3A shows a state where the panel 10 is closed, and FIG. 3B shows a state where the panel 10 is opened. In a state where the panel 10 is closed, the insertion / ejection port 5 is closed by the panel 10 as shown in FIG. On the other hand, when the panel 10 is opened, as shown in FIG. 3B, the insertion / ejection port 5 is exposed, and the disc 2 is inserted into the insertion / ejection port 5 and the disc 2 is inserted from the insertion / ejection port 5. It is ready to discharge.
[0038]
Returning to FIG. 1, the information processing device 3 is provided with an operation unit 12 as an example of operation means for operating the present device. The operation unit 12 includes several keys (operation buttons) and the like for operating the information processing apparatus 3. As an example, an eject key 12 a for instructing ejection of the disc 2 and the like, Is provided. Although not shown, the operation unit 12 includes a key for instructing stop of reproduction, a main switch for turning on and off the power, and the like. The operation unit 12 is provided, for example, on the panel 10 as shown in FIG. The panel 10 is provided with a display 12c for displaying the number of the song being reproduced and the mode being executed in addition to various keys constituting the operation unit 12.
[0039]
Returning to FIG. 1, the information processing apparatus 3 is provided with a microcomputer (hereinafter, referred to as a microcomputer) 13 as an example of a control unit. The microcomputer 13 includes a central processing unit (CPU) 13a, a read only memory (ROM) storing a program executed by the CPU 13a, and a memory configured by a random access memory (RAM) in which the CPU temporarily stores information. 13b.
[0040]
The microcomputer 13 is connected to the loading drive unit 4, the processing unit 6, the first switch 7, the second switch 8, the third switch 9, the panel drive unit 11, and the operation unit 12. Then, the microcomputer 13 receives an instruction signal by operating various keys of the operation unit 12 and detection signals from the first switch 7, the second switch 8, and the third switch 9, and stores them in the memory 13b. A control signal is output to the loading drive unit 4, the processing unit 6, and the drive unit 11 in accordance with the program.
[0041]
Further, the microcomputer 13 is provided with a timer 13c for measuring a predetermined time. Further, the memory 13b of the microcomputer 13 is provided with a transparent CD ejection memory 13d for storing, as necessary, the fact that the operation of ejecting the disk 2 has been performed.
[0042]
4 and 5 are flowcharts showing the flow of processing in the information processing device 3 of the present embodiment. The operation of the information processing device 3 incorporating the medium transport device 1 of the present embodiment will be described below with reference to FIG. 3 will be described with reference to FIG. Here, in the flowcharts of FIGS. 4 and 5, the disk 2 is referred to as a CD, the first switch 7 is referred to as SW1, the second switch 8 is referred to as SW2, and the third switch 9 is referred to as SW3.
[0043]
When the user presses the eject key 12a of the operation unit 12 (step S1), the microcomputer 13 determines whether the panel 10 is closed as shown in FIG. It is determined whether it is open as shown in (b) (step S2).
[0044]
If the microcomputer 13 determines that the panel 10 is closed in step S2, the microcomputer 13 determines that pressing of the eject key 12a by the user is an instruction to open the panel 10, and controls the panel driving unit 11 to perform an operation of opening the panel 10. Send a signal. The panel driving unit 11 opens the panel 10 according to the control signal from the microcomputer 13 (Step S3).
[0045]
When the panel 10 is opened, the microcomputer 13 determines from the detection signal of the third switch 9 whether or not the disk 2 is chucked on the turntable 6a (Step S4).
[0046]
If the output of the third switch 9 is "OFF" in step S4 and it is determined that there is no disk 2 inside, it is determined that the user is about to insert the disk 2. Hereinafter, an operation of pulling the disk 2 into the information processing device 3 by the medium transport device 1 will be described.
[0047]
When the user inserts the disc 2 into the insertion / ejection port 5 (step S5), if the disc 2 is a normal disc, the optical path of the LED 7a is blocked when the leading end side of the disc 2 reaches the detection position of the first switch 7. , PD7b is shut off, and the output of the first switch 7 changes from "off" to "on" (step S6).
[0048]
When the output of the first switch 7 changes to “ON”, the microcomputer 13 sends a control signal to the loading drive unit 4 to start the conveyance of the disk 2, here, the drawing operation. The loading drive unit 4 receives the control signal from the microcomputer 13 and rotates the roller 4a in the direction of arrow a1. As a result, the disk 2 in contact with the roller 4a is transported in the direction of the arrow b1, and drawing in of the disk 2 from the insertion / ejection port 5 is started (step S7).
[0049]
When the pull-in of the disk 2 is started, the microcomputer 13 monitors the output of the third switch 9 (Step S8). In step S8, when the output of the third switch 9 is turned on by the disc 2 being conveyed to a predetermined position and chucked on the turntable 6a by a mechanism (not shown), the microcomputer 13 causes the loading drive unit 4 to operate. A control signal for stopping the transport of the disk 2 is sent. The loading drive unit 4 receives the control signal from the microcomputer 13, stops driving the motor 4b, stops rotation of the roller 4a, and stops pulling in the disk 2 (Step S9). Here, when the disk 2 is chucked on the turntable 6a, the disk 2 and the rollers 4a are separated from each other.
[0050]
When the drawing of the disk 2 is stopped, the microcomputer 13 sends a control signal for causing the panel driving unit 11 to perform an operation of closing the panel 10. The panel drive unit 11 closes the panel 10 according to the control signal from the microcomputer 13 (Step S10).
[0051]
In the case of a normal disk 2, the above-mentioned operation enables the reproduction of, for example, music as an information signal.
[0052]
On the other hand, in the process of step S5 described above, when the user inserts, for example, the disc 2 having a high transmittance into the insertion / ejection port 5, the tip side of the disc 2 reaches the detection position of the first switch 7 and Also, since the light of the LED 7a passes through the disk 2 and the light enters the PD 7b, even if the disk 2 is inserted, the output of the first switch 7 remains "OFF" and does not change. For this reason, the microcomputer 13 cannot start drawing in the disk 2 from the output of the first switch 7.
[0053]
In the case where the disc 2 is not pulled in even when inserted into the insertion / ejection port 5, the user presses a predetermined key, for example, a play key 12b. When the play key 12b is pressed (step S11), the microcomputer 13 sends a control signal to the loading drive unit 4 to start the operation of drawing the disk 2. The loading drive unit 4 receives the control signal from the microcomputer 13 and rotates the roller 4a in the direction of arrow a1. As a result, the disk 2 in contact with the roller 4a is transported in the direction of the arrow b1, and the drawing of the disk 2 from the insertion / ejection port 5 is started regardless of the output of the first switch 7 (step S12).
[0054]
When the pull-in of the disk 2 is started, the microcomputer 13 monitors the output of the third switch 9 and starts time measurement by the timer 13c (step S13). In step S13, when the output of the third switch 9 is turned on by the disc 2 being conveyed to a predetermined position and chucked on the turntable 6a by a mechanism (not shown), the microcomputer 13 causes the loading drive unit 4 to operate. A control signal for stopping the transport of the disk 2 is sent. The loading drive unit 4 receives the control signal from the microcomputer 13, stops the rotation of the roller 4a, and stops the drawing of the disk 2 (Step S14).
[0055]
When the drawing of the disk 2 is stopped, the microcomputer 13 sends a control signal for causing the panel driving section 11 to perform an operation of closing the panel 10. The panel drive unit 11 closes the panel 10 according to the control signal from the microcomputer 13 (Step S15).
[0056]
With the above operation, even if the disc 2 has a high transmittance and the presence / absence of which cannot be detected by the first switch 7, the disc 2 is pulled in and chucked on the turntable 6a, thereby enabling, for example, music reproduction as an information signal. It becomes a state. The third switch 3 is a mechanical switch, and can detect whether or not the disk 2 is chucked on the turntable 6a regardless of the transmittance of the disk 2.
[0057]
In step S13, if the output of the third switch 9 does not change to “ON” even after 5 seconds from the start of the drawing of the disk 2, the user inserts the disk 2 into the insertion / ejection port 5. The microcomputer 13 sends a control signal to the loading drive unit 4 to stop the transport of the disk 2 to the loading drive unit 4, judging that the play key 12 b was pressed without inserting the disk 2. The loading drive unit 4 receives the control signal from the microcomputer 13, and stops the rotation drive of the roller 4a (Step S14).
[0058]
Then, the microcomputer 13 sends a control signal for causing the panel driving unit 11 to perform an operation of closing the panel 10. The panel drive unit 11 closes the panel 10 according to the control signal from the microcomputer 13 (Step S15).
[0059]
Next, the operation of ejecting the disk 2 will be described. When the panel 10 is opened in the process of step S3 described above, and the disc 2 is determined to be chucked on the turntable 6a from the detection signal of the third switch 9 in step S4, the user attempts to eject the disc 2. Is determined, and the ejection operation of the disk 2 is started (step S16).
[0060]
That is, the microcomputer 13 sends a control signal to a mechanism (not shown) of the processing unit 6 to cancel the chucking by the turntable 6a. Further, the microcomputer 13 sends a control signal to the loading drive unit 4 to start the operation of ejecting the disk 2. The loading drive unit 4 receives the control signal from the microcomputer 13 and rotates the roller 4a in the direction of arrow a2. Thereby, the chuck 2 is released, and the disc 2 in contact with the roller 4a is transported in the direction of the arrow b2, and the ejection of the disc 2 from the processing unit 6 is started.
[0061]
Here, the microcomputer 13 monitors the output of the third switch 9 and determines whether or not the chucking by the turntable 6a has been released (step S17). When the chucking by the turntable 6a is released in step S17 and the output of the third switch 9 changes to "OFF", the microcomputer 13 starts measuring the time T1 by the timer 13c (step S18), and the time T2. Timing is started (step S19). Here, the time T1 is set to, for example, 832 ms, and the time T2 is set to 1024 ms.
[0062]
After the timer 13c completes measuring the time T1 (step S20), the microcomputer 13 monitors the outputs of the first switch 7 and the second switch 8, and the output of the first switch 7 is "ON". Is maintained, and it is determined whether or not the output of the second switch 8 has changed from “on” to “off” (step S21).
[0063]
If it is determined in step S21 that the output of the first switch 7 is "ON" and the output of the second switch 8 is not a combination of "OFF", the microcomputer 13 measures the time T2 by the timer 13c. It is determined whether or not has been completed (step S22).
[0064]
If it is determined in step S22 that the time measurement of the time T2 by the timer 13c has not been completed, the microcomputer 13 returns to the processing in step S21, maintains the output of the first switch 7 “ON”, and It is determined whether the output of the switch 8 has changed from “on” to “off”.
[0065]
If it is determined in step S22 that the time measurement of the time T2 by the timer 13c has been completed, the microcomputer 13 determines whether both the output of the first switch 7 and the output of the second switch 8 are a combination of “OFF” ( Step S23).
[0066]
If it is determined in step S23 that the output of the first switch 7 and the output of the second switch 8 are not a combination of "OFF", the microcomputer 13 returns to the process of step S21 and returns to the processing of step S21. It is determined whether the output is “ON” and the output of the second switch 8 is a combination of “OFF”. When the microcomputer 13 determines that the output of the first switch 7 is “ON” and the output of the second switch 8 is “OFF” in step S21, the microcomputer 13 sends the disk drive to the loading drive unit 4. The control signal for stopping the transfer of the second transfer is sent. The loading drive unit 4 receives the control signal from the microcomputer 13, stops the rotation of the roller 4a, and stops the ejection of the disk 2 (Step S24).
[0067]
On the other hand, if it is determined in step S23 that the output of the first switch 7 and the output of the second switch 8 are both "OFF", the microcomputer 13 stores a predetermined value in the transparent CD ejection memory 13d. The value is set, the fact that the disc 2 has been ejected is stored (step S25), and a control signal for stopping the conveyance of the disc 2 is sent to the loading drive unit 4. The loading drive unit 4 receives the control signal from the microcomputer 13, stops the rotation of the roller 4a, and stops the ejection of the disk 2 (Step S24).
[0068]
FIG. 6 is an explanatory diagram showing the transition of each switch when the disc is ejected. Here, in FIG. 6, the normal disk 2 is referred to as a normal CD, and the disk 2 having a high transmittance is referred to as a transparent CD. The position when the disc 2 is chucked on the turntable 6a is indicated by a solid line. In this state, the disk 2 blocks both the detection position of the first switch 7 and the detection position of the second switch 8. Thus, when the disk 2 is in the chucking position, the output of the first switch 7 and the output of the second switch 8 are both “ON” for a normal disk 2. Note that the output of the third switch 9 is “ON”.
[0069]
As described in the flowcharts of FIGS. 4 and 5, when the ejection operation of the disc 2 is started in step S16, the disc 2 is transported in the ejection direction indicated by an arrow in FIG. 6, the position of the disk 2 after a lapse of time T1 (832 ms) after the output of the third switch 9 changes to "OFF" is indicated by a broken line. When the ejection of the disc 2 is continued until the time T1, the disc 2 still blocks both the detection position of the first switch 7 and the detection position of the second switch 8, but the trailing end of the disc 2 in the ejection direction is the fourth position. The time T1 is set so that the position is closer to the detection position of the second switch 8.
[0070]
Although not shown in FIG. 6, when the ejection of the disc 2 is continued until time T2 after the output of the third switch 9 changes to "OFF", the disc 2 is still at the detection position of the first switch 7. And the detection position of the second switch 8 are both blocked, but the time T2 is set such that the rear end of the disc 2 in the ejection direction is closer to the detection position of the second switch 8. .
[0071]
As a result, after the time T2 (1024 ms) elapses after the output of the third switch 9 changes to "OFF", if the transport of the disk 2 in the discharge direction is continued, the discharged disk 2 becomes normal. In the case of the disk 2, the output of the second switch 8 changes from “on” to “off”. At this time, the output of the first switch 7 maintains “ON”. In FIG. 6, the position of the disk 2 conveyed until the output of the second switch 8 changes to "OFF" is indicated by a two-dot chain line.
[0072]
If the rotation of the roller 4a is stopped after the output of the second switch 8 changes to "OFF", before the rear end of the disk 2 passes the detection position of the first switch 7, Transport can be stopped.
[0073]
The reason why the outputs of the first switch 7 and the second switch 8 are monitored after the elapse of the time T1 is that variations in the transport speed of the disk 2 are taken into consideration. Thus, the normal operation of the disc 2 allows the disc 2 to be ejected to the insertion / ejection opening 5 by the above operation.
[0074]
On the other hand, if the disk 2 has a high transmittance, the light of the LED 7 a shown in FIG. 1 passes through the disk 2 and the light of the LED 8 a passes through the disk 2. As a result, even when the disk 2 is in the chucking position indicated by the solid line in FIG. 6, the outputs of the first switch 7 and the second switch 8 are both "OFF". Here, the output of the third switch 9 changes from “on” to “off” when the chucking is released, so that the time T1 and the time T2 can be measured. However, in the case of the disk 2 having a high transmittance, the output of both the first switch 7 and the second switch 8 is kept “off” even if the disk 2 is conveyed in the discharge direction, and the presence or absence of the disk 2 cannot be detected. The change in the output of the second switch 8 cannot stop the transport of the disk 2.
[0075]
Therefore, as described in the flowcharts of FIGS. 4 and 5, after the time T2 (1024 ms) elapses in step S22 after the output of the third switch 9 changes to “off”, the first switch in step S23. It is determined whether both the output of the switch 7 and the output of the second switch 8 are in a combination of “off”, and when the output of both switches is “off”, the rotation driving of the roller 4a is stopped.
[0076]
As a result, even when the disk 2 having a high transmittance is being ejected, the conveyance of the disk 2 can be stopped before the rear end of the disk 2 passes the detection position of the first switch 7. The disc 2 can be ejected to the insertion / ejection opening 5 by the operation.
[0077]
In the present embodiment, the rear end of the disk 2 passes through the detection position of the second switch 8 after the time T2 has elapsed since the output of the third switch 9 changed to “OFF”. Is set to time T2.
[0078]
Therefore, after the time T2 has elapsed, when the outputs of the first switch 7 and the second switch 8 are both "OFF" and the drive of the motor 4b is stopped, the second switch as in the case of the normal disk 2 is stopped. As compared with the case where the drive of the motor 4b is stopped after the output of the switch 8 changes to "OFF", the disk 2 is stopped at a position where the disk 2 is slightly drawn into the apparatus. When the second switch 8 cannot detect the presence or absence of the disk 2 in consideration of a time lag when stopping the driving of the motor 4b, the timing of stopping the transport of the disk 2 is delayed, and the disk 2 is inserted and ejected. This is to prevent the device from falling from the position No. 5.
[0079]
Next, an operation of closing the panel 10 after ejecting the disk 2 will be described. If the user presses the eject key 12a of the operation unit 12 in the process of step S1, or if the eject key 12a is pressed after the process of step S24, it is determined that the panel 10 is open in step S2. . That is, the microcomputer 13 determines that pressing of the eject key 12a by the user is an instruction to close the panel 10.
[0080]
Before closing the panel 13, the microcomputer 13 monitors the outputs of the first switch 7, the second switch 8, and the third switch 9, and when the output of the first switch 7 is "ON", It is determined whether the outputs of the switch 8 and the third switch 9 are "OFF" (step S26).
[0081]
In step S26, when it is determined that the output of the first switch 7 is "ON" and the outputs of the second switch 8 and the third switch 9 are "OFF", the disc 2 is inserted into the insertion / ejection port 5. When judging that the disk 2 remains, the microcomputer 13 sends a control signal to the loading drive unit 4 to start the operation of drawing the disk 2. The loading drive unit 4 receives the control signal from the microcomputer 13 and rotates the roller 4a in the direction of arrow a1. As a result, the disc 2 in contact with the roller 4a is transported in the direction of the arrow b1, and the drawing of the disc 2 from the insertion / ejection port 5 is started (step S27).
[0082]
When the pull-in of the disk 2 is started, the microcomputer 13 monitors the output of the third switch 9 (Step S28). In step S28, when the output of the third switch 9 is turned on by the disc 2 being conveyed to a predetermined position and chucked on the turntable 6a by a mechanism (not shown), the microcomputer 13 causes the loading drive unit 4 to operate. A control signal for stopping the transport of the disk 2 is sent. The loading drive unit 4 receives the control signal from the microcomputer 13, stops the rotation of the roller 4a, and stops the drawing of the disk 2 (Step S29).
[0083]
When the drawing of the disk 2 is stopped, the microcomputer 13 sends a control signal for causing the panel driving unit 11 to perform an operation of closing the panel 10. The panel drive unit 11 closes the panel 10 according to the control signal from the microcomputer 13 (Step S30). As a result, even when the disk 2 remains in the insertion / ejection port 5, the panel 10 can be closed after the disk 2 is pulled in, and the disk 2 can be closed by closing the panel 10 while the disk 2 protrudes from the insertion / ejection port 5. Can be prevented from being damaged.
[0084]
If the outputs of the first switch 7, the second switch 8 and the third switch 9 are all "OFF" in step S26, it is determined whether or not the transparent CD ejection memory 13d is set (step S26). Step S31).
[0085]
If it is determined in step S31 that the transparent CD ejection memory 13d is set, the panel 10 is closed after the ejection operation of the disc 2 whose transmittance is so high that the presence or absence of the first switch 7 or the second switch 8 cannot be detected. Since there is a possibility that the disk 2 whose presence or absence cannot be detected by the first switch 7 may remain in the insertion / ejection port 5, the disk 2 is pulled in.
[0086]
That is, the microcomputer 13 clears the transparent CD discharge memory 13d (step S32) and sends a control signal to the loading drive unit 4 to start the operation of drawing the disk 2. The loading drive unit 4 receives the control signal from the microcomputer 13 and rotates the roller 4a in the direction of arrow a1. As a result, if the disk 2 is present, it is conveyed in the direction of arrow b1 by the rollers 4a, and the drawing of the disk 2 from the insertion / ejection port 5 is started regardless of the output of the first switch 7 (step S33).
[0087]
When the pull-in of the disk 2 is started, the microcomputer 13 monitors the output of the third switch 9 and starts time measurement by the timer 13c (step S34). In step S34, when the output of the third switch 9 is turned on by the disc 2 being conveyed to a predetermined position and chucked on the turntable 6a by a mechanism (not shown), the microcomputer 13 causes the loading drive unit 4 to operate. A control signal for stopping the transport of the disk 2 is sent. The loading drive unit 4 receives the control signal from the microcomputer 13 and stops the rotation drive of the roller 4a to stop the drawing of the disk 2 (Step S35).
[0088]
When the drawing of the disk 2 is stopped, the microcomputer 13 sends a control signal for causing the panel driving section 11 to perform an operation of closing the panel 10. The panel drive unit 11 closes the panel 10 according to the control signal from the microcomputer 13 (Step S36).
[0089]
In step S34, if the output of the third switch 9 does not change to "ON" after 2.5 seconds from the start of the pulling-in of the disk 2, it is determined that the disk 2 does not remain. Then, the microcomputer 13 sends a control signal to the loading drive unit 4 to stop the transport of the disk 2. The loading drive unit 4 receives the control signal from the microcomputer 13 and stops the rotation drive of the roller 4a (Step S35).
[0090]
Then, the microcomputer 13 sends a control signal for causing the panel driving unit 11 to perform an operation of closing the panel 10. The panel drive unit 11 closes the panel 10 according to the control signal from the microcomputer 13 (Step S36).
[0091]
With the above operation, even if the transmittance of the disk 2 is high and the presence / absence cannot be detected from the output of the first switch 7, the panel 10 can be closed after the disk 2 has been pulled in, and the disk 2 can be inserted and ejected 5 The disc 2 can be prevented from being damaged by closing the panel 10 while protruding from the panel 10.
[0092]
Here, the monitoring time in step S13 is set to 5 seconds, and the monitoring time in step S34 is set to 2.5 seconds, which is shorter than this, assuming that the disk 2 is inserted in step S13. This is because the monitoring time is set in consideration of the time to capture. On the other hand, in step S34, since there is a high possibility that the disk 2 is not present, the monitoring time is set short so that the user does not feel uncomfortable with the time until the panel 10 is closed.
[0093]
If it is determined in step S31 that the transparent CD discharge memory 13d is not set, it can be determined that the disk 2 is not left in the insertion / ejection port 5, and the microcomputer 13 causes the panel drive unit 11 to perform a control signal for closing the panel 10. Send. The panel drive unit 11 closes the panel 10 according to the control signal from the microcomputer 13 (Step S36).
[0094]
As described above, in the information processing apparatus 3 according to the present embodiment, even when the transmittance of the disk 2 is high and cannot be detected by the first switch 7 or the second switch 8, the information signal is captured and discharged. , Etc., and the restrictions on the disk 2 that can be processed can be reduced. Although the information processing apparatus 3 according to the present embodiment has been described using a CD player as an example, an audio device incorporating a MD (Mini Disc) player into the CD player, an audio device incorporating a tuner, or the like may be used. For example, in the case where an MD player is incorporated, when the operation of playing back the MD is performed after the ejection of the CD, the panel 10 is closed, so that steps S1 and S2 in the flowchart of FIG. The processing after S26 is performed. In this case, the pressing of the key in step S1 may be pressing of a mode switching key or the like for switching the playback device.
[0095]
Further, as an embodiment of the information processing apparatus 3 described above, an example in which the information processing apparatus 3 is applied to a card reader / writer, for example, in addition to the audio equipment, can be considered. That is, an optical switch detects that a magnetic card as an example of a medium has been inserted into an insertion / ejection port, and an apparatus that automatically detects the insertion of a magnetic card and automatically takes in a magnetic card. If a magnetic card is forcibly taken in by an operation, for example, even a transparent or translucent card can be processed.
[0096]
Further, as an embodiment of the medium transport apparatus 1, in addition to the apparatus for transporting the disk 2, the medium to be transported is packed with a medium having a different transmittance, for example, a packing material made of a material that does not transmit light, such as cardboard. The present invention can be applied to a device in which articles packed with a light-permeable material, such as a transparent plastic bag, are transported in a mixed manner.
[0097]
Further, the medium to be conveyed may be a fluid in addition to a solid such as a disk. That is, the present invention can also be applied to a device that detects the presence or absence of a fluid by an optical detection unit and switches the presence or absence of supply.
[0098]
【The invention's effect】
As described above, according to the present invention, in a medium transport device that transports a medium between a first position and a second position, a transport unit that transports the medium, and the presence or absence of the medium at the first position are detected. When the detecting means, the operating means for receiving the operation, and the detecting means detect the medium, the detecting means controls the conveying means to execute the operation of conveying the medium from the first position to the second position, and the detecting means detects the medium. And control means for controlling the transport means to execute a medium transport operation when a transport command is received from the operation means in a state where the detection is not performed.
[0099]
An information processing apparatus according to the present invention employs the above-described medium transport device. That is, the medium includes an insertion / ejection port for a medium, a processing unit that performs processing on the medium, a conveyance unit that conveys the medium between the insertion / ejection port and the processing unit, and a light receiving / emitting element. Detecting means for detecting the presence / absence, operating means for receiving a user's operation, and when the detecting means detects the medium, controls the transporting means to execute a pull-in operation of the medium from the insertion / ejection opening, and the detecting means And control means for controlling the transport means to execute a medium pull-in operation when a pull-in instruction is received from the operating means in a state where no is detected.
[0100]
In the medium transport device of the present invention, even when the detecting unit cannot detect the medium, the medium transport operation can be executed. Therefore, even if the medium cannot be detected by the detecting unit, the transport operation can be performed. Thus, in the information processing apparatus according to the present invention to which the medium transport apparatus according to the present invention is applied, it is possible to reduce restrictions on types of media that can be processed.
[0101]
In addition, a medium transport device according to the present invention is a media transport device that transports a medium between a first position and a second position, wherein a transport unit that transports the medium and a presence or absence of the medium at the second position are detected. Detecting means, an operating means for receiving an operation, and receiving a transport command from the operating means, controlling the transport means to execute a transport operation of the medium from a first position to a second position, and When the medium is no longer detected from the state in which is detected, the transport operation is stopped, and when the medium is transported, if the detecting means does not detect the medium, the transport operation is performed after a predetermined time has elapsed. Control means for stopping.
[0102]
An information processing apparatus according to the present invention employs the above-described medium transport device. That is, the medium includes an insertion / ejection port for a medium, a processing unit that performs processing on the medium, a conveyance unit that conveys the medium between the insertion / ejection port and the processing unit, and a light receiving / emitting element. Detecting means for detecting the presence / absence, operating means for receiving a user's operation, and upon receiving a discharge command from the operating means, controls the transport means to execute a discharging operation of the medium from the processing section, and the detecting means When the medium is no longer detected from the detection state, the discharging operation is stopped, and when the medium discharging operation is performed, if the detecting means has not detected the medium, the discharging operation is stopped after a predetermined time has elapsed. And control means for performing the control.
[0103]
In the medium transport device of the present invention, the transported medium can be stopped at a predetermined position even when the detection unit cannot detect the presence or absence of the medium. Therefore, even if the medium cannot be detected by the detecting means, a normal discharging operation can be performed. Thus, in the information processing apparatus according to the present invention to which the medium transport apparatus according to the present invention is applied, it is possible to reduce restrictions on types of media that can be processed.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration example of an information processing apparatus in which a medium transport device according to an embodiment is incorporated.
FIG. 2 is an explanatory diagram showing a positional relationship between a first switch and a second switch.
FIG. 3 is an external perspective view of the information processing apparatus.
FIG. 4 is a flowchart illustrating a flow of processing in the information processing apparatus according to the present embodiment.
FIG. 5 is a flowchart showing a flow of processing in the information processing apparatus according to the present embodiment.
FIG. 6 is an explanatory diagram showing transition of each switch when a disc is ejected.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Medium conveyance apparatus, 2 ... Compact disk (disk), 3 ... Information processing apparatus, 4 ... Loading drive part, 5 ... Insertion / ejection port, 6 ... Processing part, 6a ... turntable, 7 ... first switch, 8 ... second switch, 9 ... third switch, 10 ... panel, 11 ... panel drive unit, 12 ...・ Operation unit, 12a ・ ・ ・ Eject key, 12b ・ ・ ・ Play key, 13 ・ ・ ・ Microcomputer, 13a ・ ・ ・ CPU, 13b ・ ・ ・ Memory, 13c ・ ・ ・ Timer, 13d ・ ・ ・ Transparent CD ejection memory

Claims (11)

In a medium transport device that transports a medium between a first position and a second position,
Conveying means for conveying the medium,
Detecting means for detecting the presence or absence of the medium at the first position;
Operating means for receiving an operation,
When the detecting means detects the medium, the medium is controlled from the first position to the second position by controlling the conveying means, and
Control means for controlling the transport means to execute a transport operation of the medium when the transport means receives a transport command from the operation means in a state where the detection means does not detect the medium. Transport device. 2. The medium transport apparatus according to claim 1, wherein the detecting unit includes a light receiving / emitting element, and detects the presence / absence of the medium based on whether light enters the light receiving element. The control unit executes a transport operation of the medium in response to a transport command from the operation unit, and stops the transport operation when the medium does not reach the second position after a predetermined time has elapsed. The medium transport device according to claim 1. In a medium transport device that transports a medium between a first position and a second position,
Conveying means for conveying the medium,
Detecting means for detecting the presence or absence of the medium at the second position;
Operating means for receiving an operation,
When receiving a transport command from the operating unit, the control unit controls the transport unit to execute a transport operation of the medium from the first position to the second position, and the detecting unit detects the medium. When the medium is no longer detected from the state, the transport operation is stopped,
A medium transport device, comprising: a control unit that stops the transport operation after a predetermined time has elapsed when the detecting unit does not detect the medium when the medium transport operation is performed. 5. The medium transport apparatus according to claim 4, wherein the detecting unit includes a light receiving / emitting element, and detects the presence / absence of the medium based on whether light enters the light receiving element. A media insertion / ejection port,
A processing unit that performs processing on the medium,
Conveying means for conveying the medium between the insertion / ejection port and the processing unit,
Detecting means configured by a light emitting / receiving element, detecting the presence or absence of the medium at the insertion / ejection port,
Operation means for receiving user operations;
When the detection unit detects the medium, the control unit controls the transport unit to execute an operation of pulling the medium from the insertion / ejection port,
Control means for controlling the transport means to execute the drawing operation of the medium when receiving the drawing instruction from the operating means in a state where the detecting means does not detect the medium. Processing equipment. The control unit executes a pull-in operation of the medium in response to a pull-in command from the operation unit, and stops the pull-in operation when the medium does not reach the processing unit after a lapse of a predetermined time. 6. The information processing device according to item 6. The control means, upon receiving a discharge command from the operating means, controls the transport means to execute a discharge operation of the medium from the processing unit, and changes the state in which the detection means detects the medium. When the media is no longer detected, the discharging operation is stopped and
7. The information processing apparatus according to claim 6, wherein when executing the discharging operation of the medium, if the detecting unit has not detected the medium, the discharging operation is stopped after a predetermined time has elapsed. A media insertion / ejection port,
A processing unit that performs processing on the medium,
Conveying means for conveying the medium between the insertion / ejection port and the processing unit,
Detecting means configured by a light emitting / receiving element, detecting the presence or absence of the medium at the insertion / ejection port,
Operation means for receiving user operations;
When receiving the ejection command from the operation unit, the conveyance unit is controlled to execute the ejection operation of the medium from the processing unit, and the detection unit stops detecting the medium from the state where the medium is being detected. And stop the discharging operation,
An information processing apparatus, comprising: a control unit that stops the discharging operation after a predetermined time has elapsed when the detecting unit does not detect the medium when performing the discharging operation of the medium. 10. The information processing apparatus according to claim 9, wherein the predetermined time is set before the discharged medium passes through the detection unit. An openable and closable panel for closing the insertion / ejection port,
Driving means for driving the panel to open and close,
The control means, when executing the ejection operation of the medium, if the detection means has not detected the medium, stores in the storage means that the medium has been ejected,
When receiving a command to close the panel from the operation means, if the detection means has detected the medium, and if the storage means has stored that the medium has been ejected, the operation of pulling in the medium is performed. 10. The information processing apparatus according to claim 9, wherein, after the execution, the driving unit is controlled to close the panel.

Images