JP2006268902A - Optical disk reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control panel which achieves scratch reproduction using an optical disk with good operability in small size. <P>SOLUTION: The operation means is constituted of; a rotatable operation disk section 23; a rotation detection means 27 and 29 which detect rotation direction and rotation speed of the operation disk section; and a plurality of pressing detection means which detect that the operation disk section is pressed. According to the signals outputted from the rotation detection means and the plurality of pressing detection means, predetermined kinds of reproduction are carried out. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique of an optical disk reproducing apparatus including an operation disk unit that stores audio data read from an optical disk in a storage unit, and instructs a reading speed and a reading order of the audio data stored in the storage unit.

  A disc jockey (DJ: Disc Jockey) that operates an optical disc playback device to play back audio data is playing back a signal recorded on a disc such as an analog record or a compact disc (CD: Compact Disc). There is a case where special reproduction called scratch reproduction for generating sound effects such as rubbing sound is performed. When a DJ performs scratch playback using an analog record player, the DJ is forced to manually rotate the analog record being played in the clockwise direction, which is the normal rotation direction, or counterclockwise, which is the opposite direction. Generates a rubbing sound. There is also a DJ CD player capable of performing scratch reproduction similar to the scratch reproduction by the analog record player.

  This DJ CD player includes a jog dial and a storage unit (memory), stores audio data reproduced from the CD in the memory, and is stored in the memory by rotating the jog dial clockwise or counterclockwise. Controls the reading speed and reading order of audio data, and generates sound effects equivalent to rubbing sounds by analog records. As described above, the DJ can perform the same scratch reproduction as the analog record by rotating the jog dial in the same way as the analog record by reproducing the audio data recorded on the CD by the CD player for DJ. (For example, refer to Patent Document 1).

  Such a DJ CD player reproduces audio data recorded on a CD at a standard speed (hereinafter referred to as normal reproduction) when the jog dial is not operated. When the jog dial is rotated, the DJ CD player detects the rotation speed and rotation direction of the jog dial, and reads the audio data read from the CD and stored in the memory according to the detected rotation speed and rotation direction. In addition, scratch reproduction is performed to change the reading order.

  In addition to the jog dial, the DJ CD player has input buttons and the like that are not available on a normal CD player. For example, the A button for setting a start point (A point) for performing loop (repeated) playback, the B button for setting an end point (B point) for performing loop playback, and returning to the position (cue point) at which track playback is started. Cue button for standby mode, pitch bend button for changing playback speed, memo button for memorizing and reading setting data such as A point and B point for loop playback, preset for preset mode for setting initial state There are buttons and a pitch slider to adjust the playback speed.

Japanese Patent Laid-Open No. 11-86446

  In a conventional DJ CD player, in order to obtain the same operation feeling as an analog record turntable, the jog dial needs to have the same size as an analog record.

  When the jog dial is enlarged, the area of the operation panel is limited, so that it is difficult to arrange a plurality of input buttons as described above. In this case, there is a problem that if the input button is made smaller, the operation feeling becomes worse, and if the area is larger than that of the conventional operation panel, there is a problem that the entire apparatus becomes larger.

  In order to solve the above-described problems, the present invention provides a technique capable of reducing the size of an operation panel and reducing the size of the entire apparatus without sacrificing operability in an optical disk reproducing apparatus. Objective.

  In order to solve the above-mentioned problems, the present invention is configured to output different signals depending on the pressing position on the operation disk part, and the operation disk part operation can be reproduced in different modes according to the output signal. Apply.

  Specifically, it is an optical disk reproducing device for reproducing information recorded on an optical disk, wherein a reading means for reading information from the optical disk, a storage means for storing information read by the reading means, and the storage means Control means for controlling the reproduction of information stored in the control means, operation means for receiving a predetermined instruction for reproduction in the control means, and output means for outputting information reproduced by the control means, The operation means includes a rotatable operation disk portion, a rotation detection means for detecting a rotation direction and a rotation speed of the operation disk portion, and outputting a detection result to the control means as a first control signal, and the operation disk portion A plurality of press detecting means arranged at different positions to detect that the operation disk portion is pressed and to output a predetermined signal to the control means. The control means includes an output signal instruction means for instructing the plurality of press detection means to output a signal type when the press is detected, the first control signal, and the plurality of press detections. There is provided an optical disc reproducing apparatus comprising: a reproduction control unit that controls to perform reproduction of a predetermined type in accordance with a signal output from the unit.

  According to the present invention, in the optical disc reproducing apparatus, the size of the operation panel can be reduced without sacrificing operability, and the entire apparatus can be reduced in size.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of the optical disc playback apparatus 100 of the present embodiment. In FIG. 1, an optical disk reproducing apparatus 100 includes a turntable 1, a spindle motor 2, a servo control unit 3, an optical pickup 4, a reproduction amplifier 5, a signal processing unit 6, a memory control unit 7, a RAM (Random Access Memory) 8, a DAC. (Digital1 Ana1og Converter) 9, an output terminal 10, a control unit 11, an operation unit 12, and a display unit 13.

  The optical disc playback apparatus 100 according to this embodiment includes a jog dial in the operation unit 12 and can change the reading speed and reading order of digital audio data reproduced from a CD and stored in the RAM 8 in accordance with instructions from the jog dial. It is a CD player.

  The turntable 1 fixed to the spindle motor 2 fixes the CD. When a playback start instruction is input through the operation unit 12, the servo control unit 3 controls the spindle motor 2 by rotating it at a predetermined linear velocity. In addition, the servo control unit 3 controls a focus servo circuit and a tracking servo circuit (not shown) in order to correctly trace the pit row of the CD by the laser light from the optical pickup 4.

  Digital audio data read by the optical pickup 4 is shaped and amplified by a reproduction amplifier 5 and input to a signal processing unit 6. The signal processing unit 6 performs processing such as demodulation of digital audio data, extraction of an error signal such as a focus error signal and a tracking error signal, and a synchronization signal, and inputs the digital audio data to the memory control unit 7.

  The memory control unit 7 controls the input digital audio data to be input to the RAM 8. The RAM 8 stores the input digital audio data. The digital audio data stored in the RAM 8 is read out and input to the DAC 9 under the control of the memory control unit 7. The DAC 9 converts digital audio data into an analog audio signal. The analog audio signal converted by the DAC 9 is output from the output terminal 10.

  The display unit 13 displays the playback time, track number, etc. of the currently playing track.

  The operation unit 12 includes an input switch for receiving a predetermined instruction such as a reproduction / reproduction stop instruction or an ejection instruction. In addition, the operation unit 12 in the present embodiment includes a rotatable operation disk unit such as a jog dial in order to receive a predetermined instruction.

  2 and 3 are views showing a side cross section of the jog dial included in the operation unit 12 of the optical disc reproducing apparatus 100 according to the present embodiment. FIG. 4 is a top view of the jog dial provided in the operation unit 12 of the optical disc playback apparatus 100 according to this embodiment.

  2, 3, and 4, the operation unit 12 includes a placement unit 21, a mat unit 22, an operation disk unit 23, a projection unit 23 a, a holding unit 24, a rotating shaft 25, a screw 26, a scale unit 27, and a slit unit. 27a, the housing part 28 of the optical disk reproducing apparatus 100, the optical sensor part 29, the eight pressure detection parts 301 to 308, the switch part 30a provided in each of the pressure detection parts 301 to 308, and the eight LEDs 401 to 408. Prepare.

  The operation disk portion 23 in the present embodiment is configured by a disk-shaped jog dial corresponding to the size of an analog record having a diameter of 1 cm to 30 cm, and is attached to the upper surface of the optical disc playback apparatus 100.

  The placement unit 21 is fixed to the housing unit 28. The mat portion 22 is placed on the upper surface of the placement portion 21 with the rotation shaft 25 inserted in the center. The operation disk portion 23 is placed on the upper surface of the mat portion 22 with a rotation shaft 25 inserted in the center thereof. The mat portion 22 is a split mat or the like, and is used for the operation disk portion 23 to smoothly rotate on the placement portion 21. The mat portion 22 has substantially the same outer shape as that of the operation disk portion 23, and is made of a resin material having a small friction coefficient and hardly generating static electricity.

  The placement unit 21, the mat unit 22, and the operation disk unit 23 correspond to a turntable, a slip mat, and an analog record of an analog record player used by the DJ as an operator. Therefore, the operator can operate the optical disc playback apparatus 100 according to the present embodiment with the same operation feeling as that of an analog record player.

  The placement unit 21 is made of polycarbonate resin or the like. Here, if the material which can rotate smoothly on the mounting part 21 and does not generate static electricity is used as the operation disk part 23, the mat part 22 described above is formed between the mounting part 21 and the operation disk part 23. It is not necessary to prepare for it.

  The holding part 24 has a rotary shaft 25 inserted in the center thereof and is placed on the upper surface of the operation disk part 23, and a protrusion 23 a provided on the operation disk part 23 is provided in a recess (not shown) provided in the holding part 24. Inserted and fixed to the rotary shaft 25 with screws 26. For this reason, even if the operation disk part 23 is rotated, it does not come off from the rotating shaft 25 and can rotate on the upper surface of the mounting part 21 via the mat part 22.

  The scale portion 27 has a rotary shaft 25 inserted in the center thereof and is fixed to the rotary shaft 25 with a screw (not shown). Since the operation disk part 23 and the scale part 27 have an integral structure via the rotation shaft 25, when the operation disk part 23 is rotated, the scale part 27 also has the same rotational speed and speed as the operation disk part 23. Rotate in the same direction. The scale part 27 includes a slit part 27a made of a slit formed in the outer peripheral part. The slits of the slit portion 27a are formed by printing with a rectangular paint or printing paint containing carbon, for example.

  The optical sensor unit 29 which is the first detection unit of the present embodiment detects the rotation direction and the rotation speed of the operation disk unit 23 and outputs a first control signal. The optical sensor unit 29 includes two optical sensors at different positions on the same circumference, and detects the rotational speed and direction of the scale unit 27 that rotates together with the operation disk unit 23. The optical sensor unit 29 is fixed to a position of the housing unit 28 where the slit unit 27a can be detected. When the two optical sensors of the optical sensor unit 29 detect the slit unit 27 a of the scale unit 27 that rotates as the operation disk unit 23 rotates, the optical sensor unit 29 generates a pulse signal a and a pulse signal b, respectively, and outputs them to the control unit 11. . This is the first control signal described above. Since the two photosensors of the photosensor unit 29 are installed at different positions, the detection time of the rotating slit unit 27a is shifted. Therefore, the pulse signal a and the pulse signal b output from each have a phase difference (for example, a phase difference of 90 degrees).

  The press detection units 301 to 308 as the second detection units of the present embodiment detect that a predetermined position of the operation disk unit 23 has been pressed, respectively, and in response to an instruction from the control unit 11, Three control signals are output. The pressure detection units 301 to 308 are provided on the casing unit 28 at equal intervals on the same circumference of a circle with a radius R centered on the center of the rotation shaft 25. The press detection units 301 to 308 detect that the operator has pressed a position on the operation disk unit 23 above the press detection units 301 to 308, and output a control signal. Is for. Therefore, as shown in FIG. 4, it is provided on the housing 28 at a position in the vicinity of the outer edge of the operation disk portion 23 and directly below the inner side of the outer edge. Further, the length of the radius of the operation disk part 23 and the radius R may be provided approximately equal, that is, provided at a position directly below the outer periphery of the operation disk part 23. The reason why the press detection units 301 to 308 are provided at positions where it is possible to detect pressing near the outer peripheral portion of the operation disk portion 23 will be described later.

  In the present embodiment, the eight press detection units 301 to 308 are provided so that the distances between the adjacent press detection units are equal. However, the number of the press detection units 301 to 308 is not limited to this, and is determined according to the size of the operation disk unit 23 and the elastic strength of the placement unit 21 and the operation disk unit 23.

  Moreover, the press detection parts 301-308 are each provided with the switch part 30a so that the mounting part 21 may be contact | connected between the mounting parts 21. FIG. Each switch part 30a is, for example, a push-type switch of a soft touch type (a type in which the repulsion resistance is small when the switch part 30a is pushed down), and the movement amount (stroke) of the switch part 30a is about 0.5 m. is there. The press detection units 301 to 308 detect that the corresponding switch unit 30a is pressed (touched) and released (released), and detects that the switch unit 30a is pressed (touched). Then, the output of the second control signal or the third control signal is started, and when the pressing is released (released), the output of the second control signal or the third control signal is stopped.

  Note that the switch unit 30 a is pressed when the operator of the optical disc playback apparatus 100 presses the outer periphery of the operation disk unit 23. That is, as shown in FIG. 3, when the operator of the optical disc reproducing apparatus 100 presses the outer peripheral portion of the operation disc portion 23, the placing portion 21, the mat portion 22 and the operation disc portion 23 are pressed with the D point as a fulcrum. Therefore, the placement portion 21 presses the switch portion 30a.

  The LEDs 401 to 408 are means for indicating to the operator the position on the operation disk portion 23 where the third control signal is output when the operation disk portion 23 is pressed. The outer side of 308 is disposed outside the operation disk portion 23. The LEDs 401 to 408 are turned on in response to an instruction from the control unit 11 when corresponding press detection units 301 to 308 on the same radius are selected, that is, the operation disc is selected. The operator is shown that the third control signal is output when the user presses down on the pressing detection unit of the unit 23. With the lighting of the LEDs 401 to 408, the operator rotates the part other than the above-described press detection part on the operation disk part 23 while pressing it, as will be described later, in the case of the optical disc playback apparatus 100 of the present embodiment. It can be known that the scratch reproduction is realized and the scan is realized by rotating the other portion while pressing.

  The control unit 11 includes an LED selection processing unit 111, a pressed location determination processing unit 112, a rotation direction and speed determination unit 114, and a reproduction control unit 115.

  Moreover, the control part 11 hold | maintains the press detection parts 301-308 adjacent to every LED401-408 as the positional information 700 in the memory which is not shown in figure. FIG. 5 shows an example of the position information 700. As shown in the figure, the position information 700 includes an LED storage unit 701 that stores information for specifying the LEDs 401 to 408 and a proximity press detection unit that stores information for specifying the press detection units 301 to 308 close to the LED. A storage unit 702 and a state storage unit 703 that stores information indicating whether or not an LED specified by information stored in the LED storage unit 701 has been selected by an instruction from a selection instruction unit (not shown).

  When the LED selection processing unit 111 receives an instruction to select any one of the LEDs 401 to 408 from a selection instruction unit (not shown) that receives a user's LED selection instruction, the state storage unit corresponding to the selected LED 703 stores information indicating that the item is selected. In this embodiment, “lighting” is stored. Then, the selected LED is turned on. Thereafter, the control unit 11 refers to the position information 700 and controls output of various control signals described later.

  The pressed location determination processing unit 112 determines whether or not the press detection units 301 to 308 that detect the pressing of the corresponding switch unit 30a are close to the selected (lighted) LED, It is determined and instructed whether the press detection units 301 to 308 output the second control signal or the third control signal. In the present embodiment, in the case of notifications from the press detection units 301 to 308 that are not in close proximity, the press detection units 301 to 308 that are the notification sources are instructed to output the second control signal, and the press detection units 301 to 308 that are in close proximity are instructed. In the case of the notification from the notification, the notification source press detection units 301 to 308 are instructed to output the third control signal.

  Specifically, when receiving a press detection notification from one or more press detection units 301 to 308, the pressed location determination processing unit 112 of the control unit 11 refers to the position information 700 and notifies the detection of the press. Whether or not the detected pressure detection units 301 to 308 are stored in the proximity press detection unit storage unit 702 as being close to the selected LEDs 401 to 408 (“ON” is stored in the state storage unit 703) Is determined. When it is determined that it is not stored, an instruction to output the second control signal is instructed to the press detection units 301 to 308 that are notification sources, and when it is determined that it is stored, an instruction to output the third control signal is notified. The original pressure detection units 301 to 308 are instructed.

  In the present embodiment, among the LEDs 401 to 408, the third control signal is output from only one press detection unit close to the selected LED, and the second control signal is output from the other press detection units. However, a configuration may be adopted in which the third control signal is output from a plurality of press detection units close to the lit LED. For example, when the LED 401 is selected, when three press detection units close to the LED 401, that is, the press detection units 301, 302, and 308 are pressed, a third control signal is output from those press detection units. When other press detection units are pressed, the second control signal may be output from those press detection units. In this case, a plurality of press detection units may be registered in the proximity press detection unit storage unit 702 of the position information 700.

  For example, among the LEDs 401 to 408, when the LED 401 is lit by an instruction signal from a selection instruction unit (not shown), the outer peripheral portion of the placement unit 21 is held in the position information 700 as a press detection unit close to the LED 401. This is the pressure detection unit 301. Therefore, the control unit 11 instructs the press detection unit 301 to output the third control signal when the press is detected, and when the other press detection units 302 to 308 detect the press, Instruct to output the second control signal.

  When the switch unit 30a of the pressure detection unit 302-308, which is a pressure detection unit other than the pressure detection unit 301, is pressed down and a press is detected, the press detection units 302-308 that have detected the press are detected by the second control signal. Is output to the control unit 11. On the other hand, when the switch unit 30 a of the press detection unit 301 is pressed down and a press is detected, the press detection unit 301 outputs a third control signal to the control unit 11.

  Further, the rotation direction and speed determination unit 114 determines the rotation direction of the operation disk unit 23 based on the input first control signal, and calculates the rotation speed. Specifically, the rotation direction of the operation disk portion 23 is determined based on the phase difference between the pulse signal a and the pulse signal b of the first control signal that is input. For example, when the phase difference between the pulse signal a and the pulse signal b is 90 degrees, the pulse signal a is about +90 degrees relative to the pulse signal b when the operation disk portion 23 is rotated in the clockwise direction. On the other hand, when the operation disk portion 23 rotates counterclockwise, the pulse signal a exhibits a phase difference of −90 degrees with respect to the pulse signal b. The rotation direction and speed determination unit 114 of the control unit 11 determines the rotation direction based on the phase difference plus or minus. Further, the rotation direction and speed determination unit 114 of the control unit 11 rotates the operation disk unit 23 from the number of pulses of either the pulse signal a or the pulse signal b of the first control signal input for a certain time. Calculate the speed.

  A third control signal is output when the press detection units 301 to 308 close to the lit LED are pressed down, and a second control signal is output when the other press detection units 301 to 308 are pressed down. The output configuration is such that when the operation disk portion 23 rotates in a state where the operation disk portion 23 in the vicinity of the lit LEDs 401 to 408 is pressed, and when the operation disk portion 23 in the other portion rotates. This is to make it possible to distinguish the operation mode to be realized when the operation disk portion 23 is rotated in the pressed state.

  The optical disc playback apparatus 100 according to the present embodiment realizes a scan mode in which fast forward or fast reverse is performed when a portion close to the LEDs 401 to 408 lit on the operation disk portion 23 is pressed, and other portions are When the button is pressed, a scratch mode is realized in which scratch reproduction is performed according to the rotation operation given to the operation disk by the operator. In addition, the optical disc playback apparatus 100 according to the present embodiment, when receiving a playback instruction, performs a normal playback mode for performing normal playback of a mounted CD, and a pitch bend for performing playback by continuously changing the playback speed. Mode.

  The playback control unit 115 of the control unit 11 switches between these modes according to the types and combinations of control signals input from the respective detection units provided in the optical disc playback apparatus 100.

  When it is determined that none of the first control signal, the second control signal, and the third control signal is input, the playback control unit 115 controls the optical disk playback device 100 to operate in the normal playback mode. This is a state in which the operation disk portion 23 is not rotated.

  The reproduction control unit 115 controls to realize reproduction in the pitch bend mode when detecting the input of only the first control signal from the state where none of the first control signal, the second control signal, and the third control signal is input. To do. That is, when the operator rotates the operation disk part 23 with a force that does not cause the placement part 21, the mat part 22 and the operation disk part 23 to bend, and only the first control signal is input to the control part 11, The reproduction control unit 115 that has detected the memory control unit 7 so as to increase or decrease the reading speed of the digital audio data read from the RAM 8 according to the rotation direction of the operation disk unit 23 determined from the input first control signal. To achieve playback in pitch bend mode.

  When the reproduction control unit 115 detects that the second control signal is input in addition to the first control signal, the reproduction control unit 115 controls to realize reproduction in the scratch mode. That is, the memory control unit 7 is controlled to read the digital audio data from the RAM 8 at the reading speed and reading order according to the rotation direction and the rotation speed of the operation disk unit 23 determined by the first control signal. The memory control unit 7 controls the reading speed and reading order of digital audio data stored in the RAM 8 (whether the audio data is read with an ascending address or a descending address) according to an instruction of the reproduction control unit 115.

  For example, the LED 401 is turned on by an instruction signal from a selection instruction unit (not shown), and the switch unit 30a of the press detection units 302 to 308 which are press detection units other than the press detection unit 301 close to the LED 401 when the operation disk unit 23 is pressed. When is pressed, when it is determined that the operation disk unit 23 has been rotated in the clockwise direction, the reproduction control unit 115 reads at a reading speed corresponding to the operated (determined) rotation speed. The digital audio data stored in the RAM 8 is controlled to be read out in ascending order. On the other hand, when it is determined that the operation disk portion 23 has been rotated counterclockwise under the same conditions, the digital audio stored in the RAM 8 is read at a read speed corresponding to the operated (determined) rotation speed. Control to read data in descending order.

  Furthermore, when the reproduction control unit 115 detects that the third control signal is input in addition to the first control signal, the reproduction control unit 115 controls to realize reproduction in the scan mode. That is, fast forward (increase the reproduction speed in the normal reproduction direction) or fast reverse (increase the reproduction speed in the direction opposite to the normal reproduction direction) according to the rotation direction of the operation disk portion 23 determined from the first control signal. The memory control unit 7 is controlled to execute the scan.

  For example, the LED 401 is turned on by an instruction signal from a selection instruction unit (not shown), and the switch 30a of the press detection unit 301 that is a press detection unit close to the LED 401 is pressed by pressing the operation disk unit 23. When it is detected that the operation disk unit 23 is rotated in the clockwise direction, the reproduction control unit 115 executes a fast-forward double speed scan (a reproduction speed twice the normal reproduction speed), When the operation disk portion 23 is rotated counterclockwise under the same conditions, control is performed to execute a fast-reverse double-speed scan.

  Next, details of operations in each operation mode of the optical disc playback apparatus 100 of the present embodiment will be described.

  First, the normal playback mode will be described. The operator presses a playback button (not shown) of the operation unit 12 to start normal playback of audio data recorded on the CD. That is, the optical disc playback apparatus 100 according to the present embodiment performs normal playback when a playback instruction is received and the operation disk unit 23 is not rotated. This is because the control unit 11 of the optical disc playback apparatus 100 according to the present embodiment detects that the playback button of the operation unit 12 has been pressed, and any one of the first control signal, the second control signal, and the third control signal. Is also detected by controlling the memory control unit 7 to reproduce the audio data recorded on the CD placed on the turntable 1 in the normal reproduction mode.

  Next, reproduction in the scratch mode will be described. When performing reproduction in the scratch mode, that is, scratch reproduction, the operator quickly rotates clockwise or counterclockwise while pushing the outer peripheral portion of the operation disk portion 23 by hand during normal reproduction.

  Normally, when performing scratch reproduction using an analog record player, an operator performs a rotation operation (scratch operation) while pressing the analog record in order to quickly rotate the analog record against the rotation of the turntable. Since it is easier to rotate the analog record by putting a hand on the outer periphery than the inner periphery of the analog record, the operator performs a rotation operation (scratch operation) while pushing the outer periphery. Also, the operator presses not the entire outer periphery of the analog record but a part on the operator's dominant arm side.

  Also in the optical disc playback apparatus 100 of the present embodiment, when performing scratch playback, if the operator operates the operation disk part 23 with the same operation feeling as in the case of analog records, the operation disk part 23 is A part of the operator's dominant arm is rotated while being pressed downward. That is, when the operator is right-handed, a scratch operation (rotation operation) is performed by pressing a range within the right half of the outer periphery of the operation disk portion 23 as viewed from the operator. On the other hand, when the operator is left-handed, a range within the left half of the outer peripheral portion of the operation disk portion 23 as viewed from the operator is pressed and a scratch operation (rotation operation) is performed.

  For this reason, for example, when the operator is right-handed, the operator inputs an instruction via the selection instruction unit so that the LED on the opposite side to the dominant hand, that is, the leftmost LED as viewed from the operator is turned on. To do. Then, according to the instruction of the selection instruction unit that has accepted the input, the control unit 11 turns on the LED 407 that is the leftmost LED among the LEDs 401 to 408 when viewed from the operator. At this time, when the pressing of the switch unit 30a corresponding to the press detection unit 301 to 306 or 308 is detected, the second control signal is output, and the pressing of the switch unit 30a corresponding to the press detection unit 307 is detected. The third control signal is output.

  When the operator is right-handed, the scratch reproduction instruction is normally performed by pressing the outer peripheral portion of the right half as viewed from the operator of the operation disk portion 23. Therefore, the pressing is performed by the press detection units 301 to 305. Detected. Therefore, according to this configuration, when the outer peripheral portion of the right half is pressed as a normal scratch reproduction instruction, the second control signal is output and reproduction in the scratch mode is performed.

  Here, the control at the time of transition between normal reproduction and scratch reproduction will be described. FIG. 6 is a diagram for explaining how the control signals are input to the control unit when the optical disk playback apparatus 100 according to the present embodiment shifts from normal playback 501 to scratch playback 502 and then returns to normal playback 503. FIG.

  When the operator performs a rotation operation while pressing the outer peripheral portion of the operation disk portion 23 during normal reproduction 501, as shown in FIG. 3, the placement portion 21, the mat portion 22, and the operation disk portion 23 are The body part 28 is bent downward by a pressing force with the point D as a fulcrum. At this time, when the outer peripheral portion of the placement unit 21 depresses each switch unit 30a of the one or more press detection units 301 to 308, each press detection unit 301 to 308 receives the second control signal according to the instruction of the control unit 11. 505 is generated and output to the control unit 11. A point in time when the press detection units 301 to 308 detect pressing is defined as point A.

  Further, when the operation disk unit 23 starts rotating, the optical sensor unit 29 detects the rotating slit unit 27a and generates and controls the first control signal (the pulse signal a and the pulse signal b described above) 504. To the unit 11.

  Therefore, when the operator starts the rotation operation while pressing the outer peripheral portion of the operation disk portion 23, the first control signal 504 and the second control signal 505 are started from the point A in the optical disc reproducing apparatus 100 as shown in FIG. Is output to the control unit 11.

  When both the first control signal 504 and the second control signal 505 are input, the control unit 11 determines the read speed corresponding to the rotation speed and the rotation direction of the operation disk unit 23 determined based on the first control signal 504, and The memory control unit 7 is controlled to read the digital audio data from the RAM 8 in the reading order, and scratch reproduction 502 is performed.

  When the operator releases his / her hand from the operation disk part 23, the placement part 21, the mat part 22 and the operation disk part 23 return to the state before the operation disk part 23 is pressed by elasticity as shown in FIG. When the mounting unit 21 does not depress the switch units 30a of the press detection units 301 to 308, the press detection units 301 to 308 that detect release of the press stop output of the second control signal 505 toward the control unit 11. To do. The time point when the press detection units 301 to 308 detect the disclosure of pressing is set as the B time point.

  At this time, the operation rotating unit 23 continues to rotate for a while due to inertia. For this reason, the first control signal 504 is input to the control unit 11 from the optical sensor unit 29 for a while. A period from the time point B until the operation rotating unit 23 stops rotating and the input of the first control signal 504 from the optical sensor unit 29 is ended is C.

  Even if the first control signal 504 is input from the optical sensor unit 29, the control unit 11 of the optical disc playback apparatus 100 according to the present embodiment stops the input of the second control signal 505 from the press detection units 301 to 308. The scratch reproduction 502 is finished (time B shown in FIG. 6), and the memory control unit 7 is controlled to read the digital audio data from the RAM 8 at the normal reproduction read speed and to perform the normal reproduction 503.

  That is, as shown in FIG. 6, the control unit 11 performs control to read digital audio data from the RAM 8 based on the first control signal while both the first control signal 504 and the second control signal 505 are input. If the input of the second control signal 505 is stopped and only the first control signal 504 is input (part C in FIG. 6), the first control signal 504 is input. Also, the digital audio data is controlled to be read from the RAM 8 at the normal reading speed. That is, the control unit 11 controls to perform normal reproduction when only the first control signal 504 is input while the first control signal 504 and the second control signal 505 are input. .

  Therefore, even if the first control signal 504 (part C shown in FIG. 6) generated while the operation disk portion 23 is rotated by inertia is input to the control unit 11, the optical disk reproducing apparatus of the present embodiment. 100 can return from the scratch reproduction 502 to the normal reproduction 503 when the input of the second control signal 505 to the control unit 11 is stopped.

  As described above, in the optical disc playback apparatus 100 according to the present embodiment, the end timing of scratch playback is determined based on whether or not the second control signal output by pressing the predetermined press detection units 301 to 308 is detected. Therefore, it is possible to return to normal reproduction at a timing closer to the operator's intention without being affected by the rotation of the operation disk portion 23 due to the inertia.

  The above-described processing has been described by taking as an example the case of returning from the reproduction in the scratch mode to the normal reproduction, but the processing in the case of returning to the normal reproduction from the scan mode is basically the same. However, the process performed by the second control signal described above is performed by the third control signal.

  Next, the operation in the pitch bend mode will be described. When performing the operation in the pitch bend mode, the operator moves the operation disk portion 23 in the clockwise direction or with a force that does not cause the placement portion 21, the mat portion 22 and the operation disk portion 23 to bend during normal reproduction. Rotate counterclockwise. When the optical sensor unit 29 detects the slit of the slit unit 27 a as the operation disk unit 23 rotates, the optical sensor unit 29 generates a first control signal (pulse signal a and pulse signal b) and outputs the first control signal to the control unit 11. At this time, since the placement unit 21 does not press down the switch units 30 a of the press detection units 301 to 308, the press detection units 301 to 308 do not output the second control signal to the control unit 11.

  When only the first control signal is input from the state where none of the first control signal, the second control signal, and the third control signal is input, the control unit 11 receives the pulse signal a and the pulse signal b of the first control signal. The memory control unit 7 is controlled to increase or decrease the reading speed of the digital audio data to be read from the RAM 8 in accordance with the rotation direction of the operation disk unit 23 determined based on the phase difference.

  For example, when it is determined from the first control signal that the operator has rotated the operation disk portion 23 in the clockwise direction, the control unit 11 determines the number of rotations of the operation disk portion 23 (the input pulse signal a or the pulse signal b). The memory control unit 7 is controlled so as to increase the speed of the digital audio data read from the RAM 8 in accordance with the number of pulses). Conversely, when it is determined from the first control signal that the operator has rotated the operation disk unit 23 counterclockwise, the control unit 11 reads the digital audio read from the RAM 8 in accordance with the number of rotations of the operation disk unit 23. The memory control unit 7 is controlled so as to reduce the data speed. When detecting that the input of the first control signal is stopped, the control unit 11 controls the memory control unit 7 to read the digital audio data from the RAM 8 at the reading speed during normal reproduction.

  Next, operations in the scan mode will be described. When performing an operation in the scan mode, the optical disc reproducing apparatus 100 turns on one LED instructed among the LEDs 401 to 408 in advance according to an instruction from the selection instruction unit. Here, the case where the LED 407 is turned on will be described as an example.

  During normal playback, the operator presses the outer peripheral portion of the operation disk portion 23 close to the LED 407 and rotates the operation disk portion 23 in the clockwise direction or the counterclockwise direction. When the outer peripheral part of the operation disk part 23 is pushed down, the placing part 21, the mat part 22 and the operation disk part 23 are bent downward by a pressing force with the point D as a fulcrum. When the pressing detection unit 307 detects that the corresponding switch unit 30 a is pressed by the outer peripheral part of the placement unit 21, the press detection unit 307 generates a third control signal according to an instruction from the control unit 11 and outputs the third control signal to the control unit 11.

  Further, when detecting the slit of the rotating slit portion 27a, the optical sensor unit 29 generates a first control signal (the pulse signal a and the pulse signal b described above) and outputs the first control signal to the control unit 11.

  The control unit 11 is a case where both the first control signal and the third control signal are input, and when it is determined that the operation disk unit 23 is rotated in the clockwise direction, a preset speed is set. When a forward scan at is performed and it is determined that the operation disk portion 23 has been rotated counterclockwise, control is performed to execute a reverse scan at a preset speed. For example, when the double speed is set in advance, when the operation disk unit 23 is rotated in the clockwise direction, a fast-forward double-speed scan is executed, and the operation disk unit 23 is rotated in the counterclockwise direction. Then, the fast reverse double speed scan is executed.

  In the present embodiment, when the operation disk unit 23 is pressed and the third control signal is input from the pressure detection units 301 to 308, if the operation disk unit 23 is rotated in the clockwise direction, fast-forwarding is performed. When a double-speed scan is executed and the operation disk unit 23 is rotated counterclockwise, control is performed so that a fast-reverse double-speed scan is executed. In the same case, the operation disk unit 23 is rotated. The scanning speed may be changed according to the angle.

  For example, when the first angle is 10 °, the operation disk unit 23 is pushed in the clockwise direction when the operation disk unit 23 is pressed and the third control signal is input from the press detection units 301 to 308. When it is detected that the rotation operation is performed by an angle smaller than the angle (for example, 1 ° to 9 °), the reproduction control unit 115 performs a fast-forward double-speed scan, and the operation disk unit 23 performs the first clockwise operation. When it is detected that the rotation operation is performed more than an angle, a fast-forwarding quadruple speed scan may be executed. Thus, the fast-forward or fast-reverse scan speed can be changed according to the rotation direction and rotation angle of the operation disk portion 23.

  In the above description, the third control signal is output only when it is detected that the press detection units 301 to 308 close to the lit LEDs 401 to 408 are pressed. However, the present invention is not limited to this. . For example, when a press detection unit (in this case, the press detection unit 301) close to a lit LED (for example, LED 401) is pressed first from a state where the operation disk unit 23 is not pressed, the press detection is performed. While it is detected that any one of the pressure detection units 301 to 308 including the other pressure detection units 302 to 308 is detected after the pressing of the unit 301 is detected, the pressing is detected. The press location determination processing unit 112 of the control unit 11 controls to output the third control signal from the press detection units 301 to 308, and the scanning speed may be increased according to the rotation angle of the operation disk unit 23. .

  For example, the operation disc unit 23 is pressed while the operation detection unit 23 is pressed down first when the press detection unit (in this case, the press detection unit 301) close to the lit LED (in this case, LED 401). Is rotated in the clockwise direction, the reproduction control of the control unit 11 is performed so that the fast-forward scanning speed increases in order of 2 × speed, 4 × speed, 8 × speed, and 16 × speed as the rotation angle of the operation disk portion 23 increases. The unit 115 controls. Further, the operation disk portion 23 of the press detection unit (in this case, the pressure detection unit 301) close to the lit LED (in this case, the LED 401) is pressed first, and the operation disk unit 23 remains pressed. When the operation disk unit 23 is rotated counterclockwise, the control unit 11 increases the fast reverse scan speed of 2 ×, 4 ×, and 8 × as the rotation angle of the operation disk 23 increases. The reproduction control unit 115 may control. With this configuration, it is possible to finely adjust the fast-forward or fast-reverse scan speed according to the rotation direction and rotation angle of the operation disk portion 23.

  Next, the reproducing operation in the optical disc reproducing apparatus 100 of this embodiment will be described. FIG. 7 is a flowchart for explaining the reproducing operation of the optical disc reproducing apparatus 100 according to the present embodiment. The control unit 11 performs the processing described in the following flowchart according to a CD playback program stored in a memory (not shown). In the following processing, a case where the LED 407 is turned on by the selection instruction unit will be described as an example.

  When the control unit 11 detects that a play button (not shown) of the operation unit 12 is pressed, the control unit 11 reads the digital audio data recorded on the CD, and stores the read digital audio data in the RAM 8 (step S1).

  The control unit 11 causes the digital audio data to be read from the RAM 8 at the reading speed during normal reproduction (step S2). Here, since the first control signal, the second control signal, and the third control signal are not inputted, as described above, the control unit 11 sends the memory control unit 7 from the RAM 8 at the read speed during normal reproduction. Control to read digital audio data.

  The control unit 11 determines whether or not the first control signal is input from the optical sensor unit 29 to the control unit 11 (step S3). When the operation disk unit 23 is rotated, the optical sensor unit 29 detects the slit of the slit unit 27a, generates a first control signal (pulse signal a and pulse signal b), and inputs the first control signal to the control unit 11. That is, it is determined whether or not the operation disk portion 23 has been rotated by the operator. When the first control signal is detected, the control unit 11 proceeds to step S4. On the other hand, while the first control signal is not detected, the control unit 11 continues normal reproduction.

  Next, the control part 11 discriminate | determines whether the 2nd control signal was input into the control part 11 (step S4). In step S <b> 3, among the outer peripheral portions of the operation disk portion 23, the outer peripheral portion of the right half as viewed from the operator is rotated while being pressed downward, and the placement portion 22 is at least one of the press detection portions 301 to 305. When the above switch unit 30a is pressed down, the press detection units 301 to 305 corresponding to the pressed switch unit 30a generate and output a second control signal. In this case, both the first control signal and the second control signal are input to the control unit 11. That is, when the operator starts a rotation operation (point A shown in FIG. 6) while pressing the right half of the outer peripheral portion of the operation disk portion 23, the first control signal and the second control signal are changed as shown in FIG. Input to the control unit 11. If it is determined that both the first control signal and the second control signal are input to the control unit 11, the process proceeds to step 5. On the other hand, if it is determined that the second control signal is not input to the control unit 11, the step is performed. Proceed to step 8.

  When it is determined that both the first control signal and the second control signal are input to the control unit 11, the control unit 11 performs control to use the operation to the jog dial received from the operator as a reproduction instruction in the scratch mode. (Step S5). That is, the control unit 11 reads the digital audio data read from the RAM 8 and the reading order (audio data in ascending order address) based on the first control signal input from the optical sensor unit 29 with the rotation operation of the operation disk unit 23. Or read in descending order).

  The controller 11 determines whether or not the input of the second control signal is stopped (step S6). When the rotation operation by the operator is finished, the placing portion 21, the mat portion 22 and the operation disc portion 23 return to the state before the operation disc portion 23 is pressed as shown in FIG. When none of the switch units 30 a of the units 301 to 305 is pressed, the press detection units 301 to 305 stop inputting the second control signal to the control unit 11. When the stop of the input of the second control signal is detected, the process returns to step 2 to resume normal reproduction.

  When it is determined in step S4 that the second control signal is not input, the control unit 11 determines whether or not the third control signal is input (step S8). When the outer peripheral part close to the LED 401 is pressed out of the outer peripheral part of the operation disk part 23, that is, the press detection part 307 detects that the switch 30a provided corresponding to the press detection part 307 is pressed. When the third control signal is generated and output to the control unit 11, the control unit 11 determines that the third control signal is input. At this time, the first control signal and the third control signal are input to the control unit 11. If it is determined that the third control signal is input, the process proceeds to step S9. If it is determined that the third control signal is not input, the process proceeds to step S11.

  When the third control signal is input in addition to the first control signal, the control unit 11 performs control using the operation of the jog dial by the operator as an operation instruction in the scan mode (step S9). That is, the memory control is performed so that the controller 11 performs a fast-forward or a fast-reverse scan according to the rotation direction of the operation disk unit 23 while receiving both the first control signal and the third control signal. The unit 7 is controlled.

  When the pressing detection unit 307 does not detect the pressing of the switch unit 30a provided in association with itself, that is, when the pressing of the operation disk unit 23 is stopped, the pressing detection unit 307 causes the control unit 11 to The output of the directed third control signal is stopped. When the control unit 11 detects that the input of the third control signal is stopped while performing the control in which the operation of the jog dial is the operation in the scan mode (step S10), the process returns to step S2. Control to resume normal playback.

  In step S8, when the input of the third control signal is not detected, the control unit 11 performs a control in which an operation to the jog dial is an operation instruction in the pitch bend mode. That is, when it is detected that only the first control signal is input in a state where the input of the second control signal and the third control signal is not detected, the control unit 11 uses the operation of the jog dial as an instruction for the pitch bend operation. Accept. The control unit 11 increases or decreases the reading speed of the audio data read from the RAM 8 to the memory control unit 7 based on the first control signal input from the optical sensor unit 29 when the operation disk unit 23 is rotated. To perform control.

  When the operation disk unit 23 stops rotating while receiving an operation instruction in the pitch bend mode, the optical sensor unit 29 stops outputting the first control signal to the control unit 11. When the control unit 11 detects the stop of the first control signal while receiving the operation instruction in the pitch bend mode (step S12), the control unit 11 returns to step S2 and controls to resume normal reproduction.

  Note that when the reproduction of all data read into the RAM 8 during the above process is completed, or when an instruction to terminate the reproduction is received via a stop button (not shown), the control unit 11 ends the reproduction process.

  In the above-described embodiment, the case where the switch unit 30a (second detection unit) provided in association with the press detection units 301 to 308 is a push-type switch has been described as an example, but the present invention is not limited thereto. Absent. Any configuration capable of detecting that a predetermined position of the operation disk portion 23 is pressed may be used. For example, the second detection unit may be configured with an optical sensor. When the second detection unit is an optical sensor, the optical sensor can detect the outer peripheral portion of the mounting portion 21 when the outer peripheral portion of the mounting portion 21 of the housing 28 is bent to a predetermined position. Fix in a possible position.

  The operation disk unit 23 may be driven by a motor in accordance with the reproduction speed during reproduction. In this case, the same processing as described above is performed by subtracting the driving direction and speed of the motor from the first control signal indicating the rotational direction and speed, and calculating the rotational direction and speed actually operated by the operator. Can do.

  As described above, in the optical disc playback apparatus 100 according to the present embodiment, the operator performs a scratch operation while pushing the outer peripheral portion of a predetermined portion (for example, the right half) of the operation disk portion 23 by hand. When the reproduction in the mode is executed, the hand is released from the operation disk unit 23 and the scratch operation is finished, the reproduction in the scratch mode can be immediately returned to the reproduction in the normal reproduction mode.

  Further, the scan mode can be realized when the operator rotates the operation disk portion 23 while manually pressing a portion near the LED 407 which is the outer peripheral portion of the operation disk portion 23. Further, by rotating the operation disk portion 23 while weakening the force applied to the operation disk portion 23, reproduction in the pitch bend mode can be realized.

  As described above, according to the present embodiment, when the operation disk portion 23 is rotated with a force that does not press the switch portions 30a of the press detection units 301 to 308, and when the operation disk is operated with a strong force that is pressed. It can be accepted as instructions for different operations from the case of rotating the unit 23. Further, the scratch mode, the scan mode, and the pitch bend mode can be switched depending on whether or not the pressing position is close to the lit LED.

  That is, the optical disc reproducing apparatus 100 according to the present embodiment realizes different modes depending on the magnitude of the pressing force of the operation disk unit 23. Further, when the force level is large, different modes are realized when the operation disk unit 23 is operated by pressing a predetermined part and when the other part is pressed and operated.

  Accordingly, since it is possible to accept instructions for all operations in the normal playback mode, scratch mode, scan mode, and pitch bend mode through the operation on the operation disk unit 23, the operator switches the mode every time the operation mode is switched. There is no need to operate buttons and the operability is improved.

  Further, according to the present embodiment, since the operation disk unit 23 also serves as an input switch for a plurality of instructions, there is no need for a selection button for switching between the above-described modes. Therefore, the number of buttons required for the operation can be reduced, and the number of buttons that need to be arranged on the operation panel of the operation unit 12 is reduced. That is, according to the optical disc playback apparatus 100 of the present embodiment, the size of the operation panel can be reduced without sacrificing operability, and the overall size of the optical disc playback apparatus 100 can be reduced accordingly. It becomes. Further, since a plurality of operation instructions are also used by one operation disk part, necessary input functions can be set efficiently, and a limited space can be used efficiently.

  Also, in a conventional DJ CD player, when the DJ rotates the jog dial and releases the jog dial, the rotation of the jog dial does not stop immediately due to inertia but the DJ returns to normal playback at the intended timing. May not be possible. However, according to the above-described embodiment, when the scratch reproduction is performed, when the operator releases his / her hand from the jog dial, the scratch reproduction is terminated and the normal reproduction is immediately resumed. For this reason, it is possible to return to the scratch reproduction at the timing intended by the operator. Therefore, it is possible to generate a sound effect equivalent to the sound effect of analog record scratch reproduction.

  In the present embodiment, the case where the number of press detection units is eight has been described as an example, but the number of press detection units is not limited thereto. Moreover, although the case where each press detection part 8 was installed at equal intervals on the same circumference was mentioned as an example, the installation position is not limited to this. The positions may be different from each other, and it is only necessary that the two pressure detection units are installed at positions that are separated from each other so that they are not pressed simultaneously.

  Furthermore, when two adjacent press detection units are pressed at the same time, the function may be controlled as a function different from the above. For example, an input switch that accepts instructions for different functions, a function that accepts instructions for scanning at different speeds, and the like may be assigned.

  In the present embodiment, one LED among the LEDs 401 to 408 is turned on in response to an instruction signal from a selection instruction unit (not shown), but is not limited thereto. For example, when a plurality of press detection units among the press detection units 301 to 308 are continuously pressed, the LED desired by the operator (DJ) may be turned on according to the pressed order. For example, when a press detection unit located at a position facing the center of the operation disk unit 23 is continuously pressed from the press detection units 301 to 308, an LED close to the last pressed press detection unit is displayed. It is good also as a structure which the control part 11 controls to make it light. Specifically, in FIG. 4, when the pressure detection unit 304 is first pressed among the pressure detection units 301 to 308 and then the pressure detection unit 308 is pressed, the LED 408 adjacent to the pressure detection unit 308 is displayed. It is set as the structure which the control part 11 controls so that it may light. In addition, when the press detection unit 305 is pressed first and then the press detection unit 301 is pressed, the control unit 11 controls the LED 401 in the vicinity of the press detection unit 301 to be lit.

  With this configuration, it is not necessary to provide a selection instruction unit on the operation panel, so that the number of input switches other than the operation disk unit 23 can be further reduced, and the area of the operation panel can be further reduced.

  Further, in the present embodiment, the LEDs 401 to 408 are provided outside the operation disk portion 23, and by turning on one LED, the operator indicates a place to be pressed during reproduction in a predetermined mode. I can't. Any configuration may be used as long as the operator can identify the portion of the operation disk unit 23 to be pressed during the reproduction of the predetermined mode.

FIG. 1 is a block diagram showing the configuration of the optical disc playback apparatus of the present embodiment. FIG. 2 is a diagram showing a side cross-section of the jog dial provided in the operation unit of the optical disc playback apparatus of the present embodiment. FIG. 3 is a diagram showing a side cross-section of the jog dial provided in the operation unit of the optical disc playback apparatus of the present embodiment. FIG. 4 is a top view of the jog dial provided in the operation unit of the optical disk reproducing apparatus according to the present embodiment. FIG. 5 is a diagram illustrating an example of position information according to the present embodiment. FIG. 6 is a diagram for explaining how control signals are input to the control unit in each playback mode of the optical disc playback apparatus of the present embodiment. FIG. 7 is a flowchart for explaining the reproducing operation of the optical disk reproducing apparatus of this embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Turntable, 2 ... Spindle motor, 3 ... Servo control part, 4 ... Optical pick-up, 5 ... Reproduction amplifier, 6 ... Signal processing part, 7 ... Memory control part, 8 ... RAM, 9 ... DAC, 10 ... Output terminal DESCRIPTION OF SYMBOLS 11 ... Control part, 111 ... LED selection process part, 112 ... Press location determination process part, 114 ... Rotation direction and speed determination part, 115 ... Reproduction control part, 12 ... Operation part, 13 ... Display part, 21 ... Mounting , 22 ... mat part, 23 ... operation disk part, 23a ... projection part, 24 ... holding part, 25 ... rotating shaft, 26 ... screw, 27 ... scale part, 27a ... slit part, 28 ... housing of optical disc reproducing apparatus 100 Part 29 ... optical sensor part 301-308 ... press detection part 30a ... switch part 401-408 ... LED

Claims (6)

An optical disk playback device for playing back information recorded on an optical disk,
Reading means for reading information from the optical disc;
Storage means for storing information read by the reading means;
Control means for controlling reproduction of the information stored in the storage means;
Operating means for accepting a predetermined instruction for reproduction in the control means;
Output means for outputting information reproduced by the control means,
The operation means includes
A rotatable operation disk, and
Rotation detection means for detecting a rotation direction and a rotation speed of the operation disk part and outputting a detection result to the control means as a first control signal;
A plurality of press detection means arranged respectively at different positions of the operation disk part to detect that the operation disk part has been pressed and to output a predetermined signal to the control means,
The control means includes
An output signal indicating means for instructing the type of signal to be output when detecting a press to the plurality of press detecting means;
An optical disc reproducing apparatus comprising: a reproduction control unit configured to perform a reproduction of a predetermined type in accordance with the first control signal and the signals output from the plurality of press detection units. . An optical disk reproducing apparatus according to claim 1, wherein
The signal output from the pressure detection means is either a second control signal or a third control signal,
The operation means further includes a selection instruction means for receiving an instruction to select a predetermined pressure detection means from the plurality of pressure detection means from a user,
The output signal instruction means instructs to output the third control signal for the pressure detection means selected by the selection instruction means, and to output the second control signal for the non-selected pressure detection means. An optical disc reproducing apparatus characterized by the above. An optical disk reproducing apparatus according to claim 2, wherein
An optical disk reproducing apparatus, further comprising: an identification unit for identifying the press detection unit selected by the selection instruction unit. An optical disk reproducing apparatus according to claim 3, wherein
The identification means includes an LED associated with each pressing detection means,
An optical disk reproducing apparatus, wherein an LED provided corresponding to the pressing detection means selected by the selection instruction means is lit. An optical disk reproducing apparatus according to claim 2, 3 or 4,
The reproduction control means includes
If none of the input of the first control signal, the second control signal and the third control signal has been received, control to perform normal reproduction,
When receiving only the first control signal, according to the rotation direction and rotation speed acquired from the first control signal, pitch bend reproduction,
When receiving the input of the first control signal and the second control signal, according to the rotation direction and the rotation speed acquired from the first control signal, scratch reproduction,
When receiving the first control signal and the third control signal, scanning reproduction is performed according to the rotation direction and rotation speed acquired from the first control signal. Playback device. An optical disk reproducing apparatus according to claim 5, wherein
The reproduction control means includes
The optical disk reproducing apparatus, wherein the scratch reproduction is stopped at a timing when it is detected that the input of the second control signal is stopped.

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