JP2004039121A - Optical disk playback device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk playback device in which the direct transmission of force applied to an operation disk by a user to a motor is prevented thereby reducing the load applied to the motor and reducing the deterioration and faults of the motor. <P>SOLUTION: The optical disk playback device is constituted of the motor 3 provided with a 1st rotation shaft 3a, a 2nd rotation shaft arranged on a position different from the 1st rotation shaft 3a, an operation dial 12 which is rotated synchronously with the 2nd rotation shaft 17, an operation disk 25 arranged on the operation dial 12 through a friction member, a belt 31 for transmitting the rotational driving force of the motor 3 to the dial 12, a detection means for detecting the rotational speed/rotational direction of the disk 25, and a control means for controlling the reading speed and reading order of audio data stored in a storage means in accordance with the rotational speed and rotational direction of the disk 25 which are detected by the detection means. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an optical disk reproducing apparatus provided with an operation dial capable of changing a reproduction speed and a reproduction order of audio data reproduced from an optical disk.
[0002]
[Prior art]
The optical disc playback apparatus includes an injection button for operating the optical disc in and out of the operation panel, a play button for starting playback and a stop button for stopping, an operation dial, that is, a jog wheel, a pitch volume for varying a playback speed, and a display unit. A reproducing unit for loading an optical disk in the apparatus, placing the optical disk on a turntable, and reproducing information recorded on the optical disk by an optical pickup, an output terminal for reproducing and outputting an audio output by the reproducing unit, A control unit for controlling the playback unit and a power switch are provided.
Then, by rotating the operation dial, a control pulse is output for the reproduction operation by Seibu Re.
[0003]
[Problems to be solved by the invention]
A DJ (Disk Jockey) operates the operation dial to adjust the base beat, and even if the DJ releases his / her hand from the operation dial to finish the operation, the moment of inertia acts on the operation dial, so that the rotation of the operation dial does not stop instantaneously. . Therefore, a control pulse is output from the operation dial until the rotation stops, so that there is a problem that it takes time to return to the normal reproduction speed.
[0004]
In addition, even if the DJ releases his / her hand after performing a scratch operation, rotation of the operation dial does not stop, so that it takes time to return to the normal reproduction speed. There is also a method of ignoring an output pulse from the operation dial by pressing a play button or a dedicated button in order to instantly return to a normal reproduction speed. However, there is a problem in that the number of operation procedures is increased.
[0005]
In order to solve these problems, the present applicant has previously proposed an "optical disk reproducing apparatus" (Japanese Patent Application No. 2002-153514). This optical disc reproducing apparatus includes a reproducing section for reproducing audio data recorded on an optical disc, a storage section for storing the audio data reproduced by the reproducing section, and a reading speed and a reading order of the audio data stored in the storing section. An optical disc playback device comprising a read instruction unit for instructing, an operation disk unit, a disk unit on which the operation disk unit is placed, a drive unit for rotating and driving the operation disk unit and the disk unit, and A first detection unit that detects a rotation speed and a rotation direction of the operation disk unit and generates a first pulse signal, a second detection unit that detects a rotation speed and a rotation direction of the disk unit and generates a second pulse signal, The reading speed and the reading order of the audio data stored in the storage unit are controlled by a first pulse signal generated by the first detection unit, and the second detection is performed. It is characterized in that it comprises a control unit for controlling the drive unit by a second pulse signal but generated.
[0006]
In such a configuration, when the user rotates the operation disk unit, it is desired that the load applied to the motor is reduced by the fact that the force applied by the user to the operation disk unit is not directly transmitted to the motor. Became.
[0007]
In view of the foregoing, the present invention provides an optical disk reproducing apparatus in which a force applied by a user to an operation dial is not directly transmitted to a motor, and a load applied to the motor is small, so that deterioration and failure of the motor can be reduced. The purpose is to do.
Also, if the operation dial is increased in size to improve the operational feeling of the user, the size of the optical disk reproducing device is also increased, so that it may not be possible to arrange the optical disk playback device in a limited DJ booth.
[0008]
According to the present invention, the arrangement of the operation dial and the motor is freely determined, so that the apparatus is reduced in size and thickness.
[0009]
[Means for Solving the Problems]
Therefore, according to the optical disk reproducing apparatus of the present invention, in the optical disk reproducing apparatus including the reproducing means for reproducing the data recorded on the optical disk, the storage means for storing the data reproduced by the reproducing means, and the operation dial, Is provided with detecting means for detecting the rotation speed and rotation direction of the operation dial by rotating the motor with a motor, and the motor rotation axis and the operation dial rotation axis are separated, that is, separately provided, and the rotation speed of the operation dial detected by the detection means is provided. The reading speed and the reading order of the data read from the storage means are controlled in accordance with the rotation direction.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of an optical disk reproducing device.
In FIG. 1, an optical disc reproducing apparatus 1 varies an injection button 40 for operating an optical disc in and out of the operation panel 2, a play button 38 for starting reproduction, a stop button 37 for stopping, an operation dial 12, and a reproduction speed. A pitch volume 39 and a display unit 41 are provided. An optical disk is loaded into the device, the optical disk is placed on a turntable, and a reproduction unit that reproduces information stored in the optical disk with an optical pickup, an output terminal that reproduces the reproduction unit and outputs an audio output, and a reproduction unit. It has a control unit for controlling and a power switch.
[0011]
By rotating the operation dial 12, a control pulse for controlling the reproducing operation of the reproducing unit is output.
Generally, a device used by a DJ who is a user uses the operation dial 12 for a search function, a pitch bend function, and a scratch function.
[0012]
The search function is capable of searching for a target position for recording information to be reproduced at a rate of one frame per one pulse in accordance with the number of control pulses to be output. This function allows you to search accurately. Turning the operation dial 12 clockwise advances the playback position, and turning it counterclockwise returns the playback position.
[0013]
The pitch bend function is a function of temporarily varying the reproduction speed of the audio signal being reproduced according to the number of output control pulses. Turning the operation dial 12 clockwise temporarily increases the reproduction speed, and turning it counterclockwise temporarily decreases the reproduction speed. This makes it possible to easily match the base beat of the audio signal to be reproduced next to the audio signal currently being reproduced.
[0014]
The scratch function is a function of outputting an audio signal in a memory built in the optical disk reproducing apparatus main body according to the number of output control pulses. An audio signal is output at a rate of one frame with respect to one pulse. When the signal is turned clockwise, the reading order of the audio signal increases. When the signal is turned counterclockwise, the reading order of the audio signal decreases.
[0015]
By rotating the operation dial 12 quickly, the speed is determined from the number of output control pulses, and the read speed of the audio signal in the memory is adjusted.
[0016]
FIG. 2 is a schematic configuration diagram of the operation dial 12 of the optical disk reproducing device.
In FIG. 2, a motor 3 is attached to an operation panel 2 of the optical disc reproducing apparatus 1 with screws 4. A pulley 5 is fixed to a rotating shaft 3 a of the motor 3 with a screw 6.
In the operation panel 2, the bearing 2a is insert-molded, that is, integrally formed (the same applies hereinafter).
[0017]
The second scale holder 7 for the operation dial 12 has a scale 8 attached with screws 9. The second scale holding section 7 is formed by insert molding the bearing 2a. The scale holding unit 7 is inserted into the bearing 2 a of the operation panel 2 via the washer 10 and held by the E-ring 11. The operation dial 12 is attached to the second scale holding unit 7 with a screw 13. A pulley portion 12a is provided on the back surface of the operation dial 12.
The optical sensor 14 that outputs a pulse by the scale 8 for the operation dial 12 is attached to the substrate 15 and attached to the operation panel 2 with screws 16.
[0018]
The rotating shaft 17, which is the operation disk holding shaft, has the bearing 2a formed by insert molding. The rotating shaft 17 is inserted into and held by a bearing 2 a of the operation panel 2 via a washer 18. The first scale holder 19 for the operation disk 25 is inserted into the rotating shaft 17 via the washer 20, and the scale holder 19 is attached with the screw 21. A scale 22 is attached to the first scale holding section 19 with screws 23. The optical sensor 28 that outputs a control pulse is attached to the substrate 29 by the scale 22 for the operation disk 25, and is attached to the operation panel 2 with the screw 30.
[0019]
The ring-shaped member 24 and the operation disk 25 are held on the operation dial 12, and the operation disk holding portion 26 is attached to the rotating shaft 17 with the screw 27. The protrusion 25a provided on the operation disk 25 is inserted into the hole 26a of the operation disk holding portion 26, and the first scale holding portion 19 rotates together with the rotation of the operation disk 25.
[0020]
The scales 8 and 22 are provided with slits (openings) so that the optical sensors 14 and 28 output control pulses. When the material of the scales 8 and 22 is metal, the slits are rectangular holes. When the material of the scales 8 and 22 is a transparent or translucent plastic, the scale portion is printed. When carbon is included in the printing paint of the scale portion, the effect of the optical sensor 64 and the optical sensor 28 detecting the scale portion is enhanced.
The ring-shaped member 24 is suitably made of plastic or plastic fiber having a small coefficient of friction. In addition, a material that does not store static electricity is good.
[0021]
The optical sensor 14 and the optical sensor 28 may have the same configuration. Further, the optical sensor 14 and the optical sensor 28 have two optical sensors incorporated in one unit, but two optical sensors may be arranged at the positions of the optical sensor 14 and the optical sensor 28, respectively.
A belt 31 is hung on a pulley 5 a of the pulley 5 fixed to the shaft 3 a of the motor 3 and a pulley 12 a of the operation dial 12.
[0022]
FIG. 3 shows a state where the belt 31 is attached to the pulley portion 5a and the pulley portion 12a. In the figure, a belt 31 is provided between a pulley portion 12a of an operation dial 12 and a pulley portion 5a rotated by a motor 3. With this configuration, the rotational driving force of the motor 3 is transmitted to the pulley portion 12a via the belt 31. Thus, a driving force transmitting unit that transmits the rotational driving force of the motor as the rotational driving force of the operation dial 12 is configured.
[0023]
In such a configuration, when the motor 3 rotates, the pulley 5 attached to the rotating shaft 3a of the motor 3 rotates, and the pulley 5 rotates, so that the pulley 5a of the pulley 5 and the pulley 12a of the operation dial 12 are rotated. The drive is transmitted to the belt 31 that is hung, and the operation dial 12 starts rotating. When the operation dial 12 starts to rotate, the operation disk 25 and the ring-shaped member 24 sandwiched between the operation dial 12 are members having a small coefficient of friction. However, when the operation dial 12 rotates, the operation disk 25 rotates together with its own weight. A member having a friction coefficient sufficient to generate a frictional force. Therefore, when the operation dial 12 rotates, the ring-shaped member 24 and the operation disk 25 also rotate. Thus, the speed change means is provided on the operation dial 12.
[0024]
Also, by removing the screw 27 and the screw 13, the operation dial 12 can be easily removed, and since the operation dial 12 is provided with the hole 12b, the belt 31 can be easily removed and the belt 31 can be easily replaced.
[0025]
FIG. 3 shows a state in which a hole 12b is formed in the operation dial 12. As shown in the figure, the hole 12b is formed in a part of the peripheral part of the pulley part 12a.
[0026]
As described above, the operation dial including the motor 3 including the first rotation shaft 3a, the second rotation shaft separately provided from the first rotation shaft 3a, and the transmission means such as the operation disk 25. 12, a belt 31 which is a driving force transmitting means for transmitting the rotational driving force of the motor 3 as the rotational driving force of the operation dial 12, and detecting means for detecting the rotational speed and rotational direction of the operation dial 12 and the operation disk. An optical disk reproducing device is configured.
[0027]
By the way, as shown in FIG. 2, the motor 3 is disposed immediately below the peripheral portion of the operation dial 12, the rotation shaft 17 is located at the center, and the rotation shaft 3 a and the pulley portion 5 a face the rear surface of the operation dial 12. It is constructed upright. The rotating shaft 3a and the rotating shaft 17 which are separate bodies are arranged in parallel with each other in a state where the rotating shaft 3a and the rotating shaft 17 partially overlap each other in the axial direction. According to this arrangement, the idle area immediately below the peripheral portion of the operation dial 12 can be used for the arrangement. With this configuration, the device can be reduced in size and thickness.
[0028]
In this manner, the motor 3 having the first rotating shaft 3a and the second rotating shaft 17 arranged separately from the first rotating shaft 3a and wrapped in the axial direction with the first rotating shaft 3a are arranged in parallel. Optical disc, comprising: an operation dial 12 provided with an operation dial, an operation disk 25 disposed on the operation dial, and a driving force transmitting means for transmitting the rotational driving force of the motor 3 as the rotational driving force of the operation dial 12, ie, a belt 31. A playback device is configured.
[0029]
FIG. 4 is a block diagram of the optical disc reproducing apparatus 1 equipped with the operation dial 12 of the present invention.
When a play button 38 arranged on the operation panel 2 of the operation unit 33 is pressed, a control signal is input to the microcomputer 32 to rotate the motor 3. When the motor 3 rotates, the operation dial 12 rotates via a pulley 5 attached to the motor 3 and a belt 31 hung on a pulley portion 12 a of the operation dial 12, and the scale 8 attached to the operation dial 12 becomes an optical sensor 14. To output a control pulse to the microcomputer 32. The microcomputer 32 calculates the rotation speed of the operation dial 12 based on the control pulse output from the optical sensor 14, and controls the motor 3 so that the rotation speed becomes a predetermined rotation speed.
[0030]
That is, the optical sensor 28, which is the first optical sensor unit, detects the opening of the slit portion of the scale 22 and generates a first control pulse according to the rotation state (rotation speed and rotation direction) of the operation disk 25. Input to the microcomputer 32. The optical sensor 14 serving as a second optical sensor detects the opening of the slit portion of the scale 8, generates a second control pulse according to the rotation state of the operation dial 12, and inputs the second control pulse to the microcomputer 32. When the rotation speed of the operation dial 12 rotating at a predetermined speed changes while operating the operation disk 25, the microcomputer 32, which is a control unit, transmits a signal from the optical sensor 14 forming the second optical sensor. The motor 3 is controlled so that the rotation speed of the operation disk 25 maintains a predetermined speed in accordance with the number of second control pulses input during a certain period of time. Since the operation disk 25 rotates together with the operation dial 12, the first control pulse is output to the microcomputer 32 when the scale 22 attached to the operation disk 25 passes through the optical sensor 28.
[0031]
When the optical disc is inserted into the reproducing section 34 and the play button 38 arranged on the operation panel 2 of the operation section 33 is pressed, the reproducing section 34 reads the audio data of the optical disc by a control signal from the microcomputer 32. The audio data read by the reproducing unit 34 is sent to the memory 35 by the reproducing unit 34 and is temporarily stored in the memory 35. The stored audio data is sent to the audio output unit 36 according to an instruction from the microcomputer 32.
[0032]
The reproducing operation of the optical disk reproducing apparatus according to the present embodiment in a general DJ operation will be described with reference to FIGS.
DJs usually use two optical disc playback devices to perform, and when one is playing, the other is used to prepare the next song to be played. An optical disk is inserted into the optical disk reproducing apparatus 1 and a music to be played next is selected. The playback speed of the tune being played and the tune to be played next are adjusted by the pitch volume 39. Even if the playback speed of the song currently playing and the song to be played next match, the base beat is shifted, so the temporary playback speed is varied to match the base beat. This operation will be described with reference to the optical disk reproducing apparatus of this embodiment. The operation dial 12 is rotating at a predetermined speed, and the operation disk 25 is also rotated by the frictional force of the ring-shaped member 24. Since the ring-shaped member 24 has a small friction coefficient, when the DJ touches the operation disk 25 with a finger, the rotation speed of the operation disk 25 can be changed without changing the rotation speed of the operation dial 12. At this time, the microcomputer 32 determines the reproduction speed of the audio data output from the difference between the control pulses output from the optical sensor 14 and the optical sensor 28, and controls the read speed of the audio data stored in the memory 35. When the DJ increases the rotation speed of the operation disk 25, the reproduction speed increases by increasing the number of first control pulses output from the optical sensor 28, and when the DJ decreases the rotation speed of the operation disk 25, the optical sensor By reducing the number of first control pulses output from 28, the reproduction speed is reduced. When the DJ releases his / her hand from the operation disk 25, the operation dial 12 is rotating at a predetermined speed. Therefore, the operation disk 25 is rotated at the same speed as the rotation speed of the operation dial 12 by the frictional force of the ring-shaped member 24. Start spinning with. Thereby, the optical sensor 28 outputs the first control pulse for normal reproduction, and the optical disc reproducing apparatus 1 starts normal reproduction.
[0033]
Next, a description will be given of a scratch operation of the DJ in the optical disc reproducing apparatus according to the present embodiment.
The DJ's finger touches the rotating operation disk 25 to stop the rotation of the operation disk 25. At this time, the operation dial 12 continues to rotate at a predetermined speed. When the rotation of the operation disk 25 stops, the first control pulse is not output from the optical sensor 28, so that the microcomputer 32 stops reading the audio data stored in the memory 35. When the DJ subsequently rotates the operation disk 25 in small increments in the forward and reverse directions with respect to the rotation direction of the operation dial 12, a pulse is output from the optical sensor 28. The microcomputer 32 determines the reading speed and the reading order of the audio data in the memory 35 from the number of the first control pulses output from the optical sensor 28 in a fixed time and the phase relationship between the two first control pulses. 35 is controlled. When the DJ finishes the scratch device and releases his / her finger from the operation disk 25, the operation disk 25 starts rotating in accordance with the rotation speed of the operation dial 12. Thereby, the optical sensor 28 outputs the first control pulse for normal reproduction, and the optical disc reproducing apparatus 1 starts normal reproduction.
[0034]
According to the optical disk reproducing apparatus of the present embodiment, the operation dial 12 is rotated, so that the operation can be immediately returned to the normal reproduction after the operation of the operation dial 12 is completed.
That is, when performing the scratch reproduction using the CD player according to the embodiment of the present invention, the DJ repeats the operation of quickly rotating the operation disk 25 in the forward or reverse direction by hand. The microcomputer 32 determines the rotation speed and the rotation direction of the operation disk 25 from the first pulse input from the optical sensor 28 serving as the first optical sensor unit. The microcomputer 32 controls a memory control unit (not shown) according to the determined rotation speed and rotation direction. The memory control unit controls the read speed and read order (read out the audio data in ascending order or read out in descending order) of the digital audio data stored in the RAM (memory 35). The digital audio data read from the memory 35 is converted into an analog audio signal, amplified by an amplifier (not shown), and output as an effect sound such as a rubbing sound from an audio output unit 36 connected to an output terminal. .
[0035]
As described above, the motor 3 having the first rotating shaft 3a, the second rotating shaft 17 provided separately from the first rotating shaft 3a, and the operation dial 12 rotating in synchronization with the second rotating shaft 3a. And a belt 31 for transmitting the rotational driving force of the motor 3 to the operation dial 12 disposed on the operation dial 12 via a friction member, and a rotation speed rotation of the operation disk 25 provided with the optical sensor 28. An optical disc comprising: detecting means for detecting the direction; and control means for controlling a reading speed and a reading order for reading audio data stored in the storage means in accordance with the rotation speed and the rotation direction of the operation disk 25 detected by the detection means. The playback device 1 is configured.
[0036]
According to this embodiment, the DJ who normally operates the analog recording device can perform the same operation of adjusting the base beat to the rotating disk and the scratching operation by using the rotating operation dial of the optical disk reproducing device of the present invention.
Further, by separating the rotation axis of the motor and the rotation axis of the operation dial, the degree of freedom in the arrangement of the motor is increased, and the size of the optical disk reproducing apparatus can be reduced.
[0037]
【The invention's effect】
As described above, according to the present invention, the rotating shaft 3a of the motor 3 and the rotating shaft 17 of the operation dial 12 are separated, and the rotational driving force of the motor 3 is controlled via the driving force transmitting means (belt). By transmitting to the dial 12, when the user rotates the operation disk 25 disposed on the operation dial 12, the force applied to the operation disk 25 by the user is not directly transmitted to the motor 3. Therefore, the load applied to the motor 3 can be reduced. Therefore, deterioration and failure of the motor 3 can be prevented. Further, since the arrangement of the operation dial 12 and the motor 3 can be freely determined, the apparatus can be made smaller and thinner than in the past, so that the degree of design freedom is increased.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an optical disk reproducing device.
FIG. 2 is a schematic configuration diagram of an operation dial showing one embodiment of the present invention.
FIG. 3 is a rear view of the operation dial.
FIG. 4 is a block diagram of an optical disc reproducing apparatus showing one embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Optical disk reproducing apparatus, 2 ... Operation panel, 2a ... Bearing, 3 ... Motor, 3a ... Rotating shaft, 5 ... Pulley, 5a ... Pulley part, 8 ... Scale, 12 ... Operation dial (jog dial), 12a ... Pulley part, 12b: Hole, 14: Optical sensor, 15: Substrate, 17: Rotation axis (disk holding shaft), 22: Scale, 25: Operation disk, 25a: Projection, 26: Operation disk holding part, 26a: Hole, 28 ... Optical sensor, 31 belt, 32 microcomputer, 33 operating unit, 34 optical disk reproducing unit, 35 memory, 36 audio output unit, 37 stop button, 38 play button, 39 pitch volume, 40 eject Button, 41 ... Display unit.

Claims (5)

In an optical disc reproducing apparatus including a reproducing unit for reproducing data recorded on an optical disk and a storage unit for recording data reproduced by the reproducing unit,
A motor having a first rotating shaft, a second rotating shaft provided separately from the first rotating shaft, an operation dial rotating in synchronization with the second rotating shaft, and a rotational drive of the motor. A driving force transmitting unit that transmits a force as a rotational driving force of the operation dial, a detection unit that detects a rotation speed of the operation dial, and a driving force transmission unit that detects the rotation speed and the rotation direction of the operation dial detected by the detection unit. An optical disk reproducing apparatus comprising: a control unit that controls a reading speed and a reading order of data read from a storage unit. An optical disc reproducing apparatus comprising: a reproducing unit for reproducing data recorded on an optical disk; and a storage unit for recording data reproduced by the reproducing unit.
A motor having a first rotating shaft, a second rotating shaft separate from the first rotating shaft, an operation dial that rotates in synchronization with the second rotating shaft, and a friction member. An operation disk disposed on an operation dial, a driving force transmission unit for transmitting a rotational driving force of the motor to the operation dial, a detection unit for detecting a rotation speed and a rotation direction of the operation disk, and the detection unit An optical disk reproducing apparatus comprising: a control unit that controls a reading speed and a reading order of data to be read from the storage unit according to a rotation speed and a rotation direction of the operation disk detected by the operation unit. A reproducing unit for reproducing data recorded on the optical disk; a storage unit for storing the data reproduced by the reproducing unit; and an operation dial, and reading from the storage unit in accordance with a rotation speed and a rotation direction of the operation dial. In an optical disc reproducing apparatus for changing a data reading speed and a reading order,
A motor provided with a first rotating shaft, an operation dial provided separately from the first rotating shaft and having a second rotating shaft arranged in parallel with the first rotating shaft in the axial direction, and the motor An optical disc reproducing device, comprising: a driving force transmitting means for transmitting the rotational driving force of the operation dial as the rotational driving force of the operation dial. 4. The optical disk reproducing apparatus according to claim 3, wherein the motor is disposed immediately below a peripheral portion of the operation dial, and the first rotation axis stands upright toward the operation dial. 4. The optical disk reproducing apparatus according to claim 1, wherein the driving force transmitting means is a belt, and the belt is disposed immediately below the operation dial.

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