JP3415634B2 - CD autochanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to a CD autochanger.
More specifically, magazine and disk address detection
CD autochanger with mounting and lifting mechanism
You. [0002] 2. Description of the Related Art FIG. 5 shows a conventional CD autochanger.
Showing disk address detection device and its surroundings
It is a front view. In the figure, reference numeral 42 denotes a magazine.
The magazine 42 has n CDs 43a._-1~ 43a_-nIs stored
Have been. Reference numeral 40 denotes a disk address detecting device.
The disk address detecting device 40 includes a slit plate 41 and
And a count sensor 50. Slit plate 4
1 has n slits 41a in a line in the vertical direction._-1~ 41a
_-nAre formed, and the slit 41a is formed._-1~ 41a_-nRank
The CD43a stored in the magazine 42_-1~ 43a_-n
Corresponds to the position. The count sensor 50 receives and emits light.
It is configured to include an optical element, etc.
Is attached. The gantry 44 is attached to the lifting mechanism 45
Along the slit plate 41 by the lifting mechanism 45
To move up and down. In the above-mentioned conventional CD autochanger,
When the gantry 44 is raised or lowered,
The slit is detected in order by the light emitting element, and the slit is detected.
Each time the count sensor 50 outputs a pulse,
It is supposed to be. Current position of count sensor 50
The slit 41a_-k, And at this time the magazine 42
CD to be pulled out and played back CD43a_-m(T
However, 1 ≦ m ≦ n). Then, CD43a_-m
Position on the slit plate 41, in other words, counting
The target position of the sensor 50 is the slit 41a._-mIndicated by
Will be done. Therefore, CD43a_-mTake out
If the position of the count sensor 50 is
1a_-kSlit 41a of target from position_-mPosition
The gantry 44 is moved. That is, the count sensor 50
The current slit 41a of the pulse output from_-kRank
To the slit position where the total from the installation is | mk
44 is raised (or lowered if the value of (mk) is negative)
You. [0004] However, the above-mentioned digital
In the disk address detection device 40, the disk address
(Slit 41a_-1~ 41a_-nPosition)
If the gantry 44 shakes due to vibration or the like,
There is a possibility that chattering may occur in the unit 50. Chatari
When slitting occurs, the same slit is doubled or tripled.
Detect and show slit detection from count sensor 50
An extra pulse signal is output in addition to the regular pulse signal
As a result, the disk address cannot be detected accurately
I will. That is, the conventional CD autochanger is
Disk address detection device
When 44 is shaken, the disc
There is a problem that the address cannot be detected accurately.
Such a problem is, inter alia, a car CD auto-chute.
It is even more serious in Nja. The gantry 44 shakes due to vibration or the like.
Even if the count sensor 50 causes chattering,
Accurate display of slit position without miscounting
Disk address detection that can detect
There is a need for a CD autochanger with an intelligent device.
Was. The present invention has been made in view of the above problems.
The base is shaken by vibrations and the count sensor is chattered.
Even if the ring is raised, the slit is correctly detected without erroneous detection.
Disks that can reliably detect disk addresses
Provide CD auto changer with address detection device
It is intended to be. [0007] [MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
In addition, the CD autochanger according to the present invention includes a magazine,
CD recorder with disk address detection device and lifting mechanism
-In the changer, the disk address detection device;
PlaceCorresponds to the disc storage position of the magazinePickpocket
Are formed in two rowsSlit plate,For each column
slitAnd two sensors for detecting
Only when the slits in each row are detected alternately.
Counting means for counting for detecting the address
HaveIt is characterized by: [0008] [Action] In the above configuration,TwoSensor
A and sensor B. CD autochange according to the present invention
In the case of the sensor, the slit is alternately formed by the sensor A and the sensor B.
The number of slits is detected and counted. That is, even
The slit corresponding to the number of disk addresses
The disk detected by the source A and corresponding to the odd disk address
The lit is detected by the sensor B, for example. Do this
And, for example, sensor A (or
Even if pulses are continuously output from the sensor B), the sensor A
(Sensor B) outputs a pulse indicating slit detection.
Then, the slit is detected by the sensor B (sensor A).
Be counted only when informed
Therefore, the chattering output is ignored. I
Accordingly, in the CD autochanger according to the present invention,
Is a false detection even if the sensor causes chattering
(= The number of slits is incorrectly counted)
The address is accurately detected. [0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a CD autochanger according to the present invention will be described.
Embodiments will be described with reference to the drawings. FIG. 1 relates to the embodiment.
FIG. 2 is a configuration diagram schematically showing a CD auto changer.
In the figure, reference numeral 14 denotes a pedestal, and the pedestal 14 has a magazine.
42, the lower ends of the slit plate 10 and the lifting mechanism 45
It is attached. Magazine 42 has n CDs 43a_-1
~ 43a_-nAre stored in the slit plate 10
The upper and lower ends of the lifting mechanism 45 are formed in two rows.
Is mounted with a gantry 44. Front of the gantry 44
Is equipped with a count sensor 11,
The driving means 13 is connected to the rear end of the fourth member 4. Coun
The sensor 11 is connected to the control means 12,
Is connected to the driving means 13. The control means 12
Indicates the current slit position of the count sensor 11.
A counter 12a is provided inside. FIG. 2 shows a slit plate 10 and a count sensor.
It is the expansion perspective view which showed 11. As shown in FIG.
The slit plate 10 has even-numbered rows of slits 10a and odd-numbered rows.
Of the slit 10b
The sensor 11 includes two sensors A and B.
Have been. The count sensor 11 moves along the slit plate 10
The slit 10a is connected to the sensor A
And slit 10b is detected by sensor B.
It is. Sensor A and sensor B are light-receiving / light-emitting elements, etc.
Are combined, and the slits 10a and
The slit position number of the slit 10b is
It corresponds to the disk number. [0011] The CD autochange constructed as described above.
The operation of the keyer will be described with reference to FIG. FIG.
2 showing the disk address detection processing in FIG.
It is a art. First, in step 1, the count sensor 11
Of the counter 12a indicating the current slit position
Is odd. Of the counter 12a
If the value is odd, a sensor that detects even-numbered slits
A is selected (step 2), and the value of the counter 12a is
If not odd, a sensor to detect odd numbered slits
B is selected (step 3). And in step 4
Is the sensor selected in step 2 or 3
Pulse signal indicating slit detection from A or sensor B
It is determined whether the signal has been output. The pulse signal is
If it is output, the value of the counter 12a is
Is updated, and in step 6, the value of counter 12a is
Disc number of CD43a to be played (= target slit)
(Position number) is determined. on the other hand,
Whether the pulse is output from sensor A or sensor B
If so, the process proceeds directly from step 4 to step 6. S
At step 6, the value of the counter 12a is changed to the disc number of the CD.
Signal, the so-called target slit position,
Returning to step 1, the value of the counter 12a is changed to the target slit position.
The above process is repeated until the
You. The contents indicated by the above-mentioned flowchart are constituted.
The following is a brief description from the aspect. Count
When the slit is detected by the sensor 11, the slit position
If the number is even, the slit position number from sensor A
In the case of odd numbers, a pulse indicating slit detection from sensor B
A signal is output and the counter provided in the control means 12 is
The value of the data 12a is updated. And the updated counsel
The disk number of the CD from which the value of the
If it does not match with the target slit position number),
The driving means 13 is controlled by the
Therefore, the gantry 44 (count sensor 11) is
The elevating mechanism 15 is driven until the position of the slot is reached. As described above, the CD auto-chair according to the embodiment is described.
In the jar, even numbered slits 10a
With the sensor A, the odd-numbered rows of slits 10b are connected to the sensor b.
The frame 44 is shaken due to vibration or the like.
Miscounting the number of slits even if chattering occurs
Disk address can be accurately detected
You. This operation will be specifically described with reference to FIG. Figure 3
Timing indicating pulse output of sensor A and sensor B
It is a chart. For example, the second CD (disk number 2)
43a_-2And then the fifth (disk number 5) C
D43a_-FiveTo play
You. The current (initial) position of the count sensor 11 is slit
10a_-2It is. Therefore, the value of the counter 12a is
Since the number is even, it is shown in the flowchart of FIG.
As described above, the count sensor 11 detects the disk number (or
Is the slit position number) When moving from 2 to 3,
The sensor B is selected and the sensor B detects the slit detection.
It is determined whether there is a loose output. Therefore, the slit
When moving from position number 2 to position 3, sensor A
Since the sensor A is not selected even if the ring is raised,
The output due to the chattering is ignored. The slit 10b is detected by the sensor B._-3Is detected
Then, the value of the counter 12a is updated from 2 to 3, and
The current position of the und sensor 11 is the slit 10b_-3It is in
Is shown. For moving from slit position number 3 to 4
With regard to the movement from the slit position number 2 to 3,
Differently, since the value of the counter 12a is an odd number,
Sensor A is selected, indicating the slit detection from sensor A
It is determined whether there is a pulse output. Accordingly
When moving from slit position number 3 to 4,
Even if sensor B chatters, sensor B is selected
Since there is no chattering output, the chattering output is ignored. The slit 10a is detected by the sensor A._-FourIs detected
Then, the value of the counter 12a is updated from 3 to 4, and
The current position of the und sensor 11 is the slit 10a_-FourIt is in
Is shown. For moving from slit position number 4 to 5
The value of the counter 12a is an even number.
In the same manner as the movement from the slit position number 2 to 3,
Thus, the sensor B is selected. Therefore, sensor A
Even if chattering occurs, the chattering output is ignored.
You. Slit 10b by sensor B_-FiveIs detected
Then, the value of the counter 12a is updated from 4 to 5.
When the value of the counter 12a reaches 5, this corresponds to the flow of FIG.
Counter 12 as shown in step 6 of the chart.
Since the value of a becomes the target slit position number,
In the dress detection process, the sensor B detects the slit 10b._-FiveDetect
It ends at the point of time. And the slit 10b_-FiveCorresponding to
CD43a_-FiveIs pulled out and played. As described above, the CD autochute according to the embodiment is
In the case of the anger, the sensor A and the sensor B
Lit is counted alternately and disk address is detected
Is counted, the count sensor 11 outputs an even number (odd number).
No.) to odd-numbered (even-numbered) slits
When moving, chattering from sensor A (sensor B)
Erroneous detection can be prevented.
As a result, the gantry 44 shakes due to vibration or the like, and
Even if the sensor 11 chatters, the disk address
Play back the specified CD without erroneously detecting
Can be [0019] As described in detail above, the CD audio according to the present invention is
-For a changer, a disk address detection device
However, according to the magazine disk storage positionThe slit
Formed in two rowsSlit plate,The slip of each column
GSensors that detect the
Disk only when the slits are detected alternately.
Counting means for performing counting for detecting
ingSoSaidEven if the sensor chatters,
Designated CD without erroneous detection of disk address
Can be reliably reproduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram schematically showing an embodiment of a CD autochanger according to the present invention. FIG. 2 is a schematic enlarged perspective view showing a slit plate and a count sensor constituting a disk address detecting device of the CD auto changer according to the embodiment. FIG. 3 is a timing chart showing pulse outputs of a sensor A and a sensor B; FIG. 4 is a flowchart showing a disk address detecting process in a control means. FIG. 5 is a configuration diagram schematically showing a disk address detection device and its periphery in a conventional CD auto changer. [Description of Signs] 10 slit plates 10a, 10b slit 11 count sensor 12 control means 12a counter 45 elevating mechanism 42 magazine 43 CD

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 17/26 G11B 15/68

Claims (1)

(57) Patent Claims 1. A magazine, CD Oh with a disk address detection device and the lifting mechanism - in DOO changer, the disk address detection device, corresponding to disc storage positions of said magazine A slit plate in which the slits are formed in two rows, two sensors that detect the slits in each row, and the slits in each row are alternately detected by these sensors.
Count for disk address detection only when
And a counting means .