JP5461367B2 - Playback device - Google Patents

Description

  The present invention relates to a playback apparatus that plays back data stored in a recording medium.

  Conventionally, tape recorders, digital audio tape recorders (DAT), magneto-optical disk devices, and the like are generally provided as recording / reproducing devices for recording / reproducing dynamic data such as audio data and image data. However, in these conventional recording / reproducing apparatuses, for example, a motor for driving a magnetic tape or the like for rotating a magneto-optical disk or the like, or such a recording medium in relation to a recording medium to be used. Various mechanisms such as a magnetic head or optical head for recording / reproducing data, and a shutter mechanism, a feeding mechanism, a chucking mechanism, and the like for attaching / detaching a recording medium to / from the outer casing are indispensable. Therefore, such a conventional recording / reproducing apparatus has its own limitations in promoting the reduction in size and weight and cost.

  On the other hand, for example, an audio using a nonvolatile semiconductor memory such as an electrical erasable programmable read only memory (hereinafter referred to as an EEPROM) as a recording medium. A recording / reproducing apparatus (hereinafter referred to as an IC recorder) is provided.

  In such an IC recorder, the use of a semiconductor memory as a recording medium eliminates the need for the above-described motor, head, and various mechanisms, and thus the entire apparatus can be reduced in size and weight and cost. In recent years, further reduction in cost and performance of the entire device has been promoted by realizing reduction in cost and increase in capacity of the semiconductor memory.

  In the IC recorder, when audio data is recorded, control is performed so that an index number is attached to one piece of data from the start of recording to the end of recording and recorded in the semiconductor memory. For example, the first recorded audio data is assigned an index number of 01, the next recorded audio data is assigned an index number of 02, and so on. is there. When playing back audio data, in order to select the audio data to be played back, this index number is displayed in advance on a display unit such as a liquid crystal display panel, and the target index number is selected with the operation button and corresponds to the index number. Audio data to be played back.

Japanese Patent Application Laid-Open No. 07-066551

  When audio data is reproduced by the IC recorder as described above, it is necessary to operate a plurality of operation buttons such as a reproduction button, a forward search button, and a backward search button. Specifically, when a plurality of data is recorded, the forward search button and the reverse search button are pressed to select the data to be reproduced prior to reproduction, and the index number of the data to be reproduced is set as described above. An operation to display on the display unit was performed. Here, when the index number is very large, each search button has to be kept pressed to display the target index number. Also, when performing a so-called cue / review operation for searching or cueing during data playback after the playback button is pressed, it is necessary to keep pressing each search button during the playback. It was.

  As described above, in the conventional IC recorder, since it is necessary to press and use a plurality of operation buttons for data reproduction, there is a problem that the operability of searching for an index number before reproduction or searching for data during reproduction is poor. Had.

  The present invention has been proposed in view of the above-described conventional situation, and an object of the present invention is to provide a playback apparatus that improves operability during playback.

A reproducing apparatus according to the present invention proposed for achieving the object as described above includes a storage means for storing a plurality of data each including management data corresponding to main data, and the plurality of data stored in the storage means. Reproducing means for reproducing the main data of the above data, operating means for user operation that allows both rotation operation and pressing operation with only the thumb of the user's left hand while the user holds with the left hand, and a predetermined period by counting the number of output pulses during an operation speed detecting means for detecting the speed of the rotation operation of the operation means, the speed of the rotational operation of the manipulating means and sensed by the operation speed detection means a predetermined Control means for determining whether or not the speed is higher than the speed and controlling retrieval of data stored in the storage means based on the determination result .

In this reproducing apparatus, the control means, when the speed of the rotating operation of the operation means determines that slower than the predetermined speed, or increase the index in the management data one by one in response to the pulse If the speed of rotation of the operating means is determined to be lower than the predetermined speed, the search is performed while increasing or decreasing the index in the management data by two or more according to the pulse. And a specific portion of the management data is selected according to the pressing operation of the operation means.

  Further, the operation means searches for the data in a direction to increase the index based on the direction of the rotation operation of the operation means.

  Further, the operation means may search for the data in a direction to decrease the index based on the direction of the rotation operation of the operation means.

  Further, the control means performs control so that one main data among the plurality of data is reproduced by the reproduction means when there is an instruction to reproduce the main data for the searched index.

  The control means may be configured to reproduce the plurality of data being reproduced based on the direction of the rotation operation of the operation means when one main data of the plurality of data stored in the storage means is being reproduced. Cue reproduction of one of the main data.

  Further, the control means is configured to reproduce the plurality of data being reproduced based on the direction of the rotation operation of the operation means when one main data of the plurality of data stored in the storage means is being reproduced. Review and replay one of the main data.

  Furthermore, the control means intermittently performs the plurality of the plurality of data based on the direction of the rotation operation of the operation means when one main data among the plurality of data stored in the storage means is being reproduced. One main data in the data is reproduced.

  Furthermore, the control means intermittently controls the plurality of the plurality of data based on the rotational speed of the operation means when one main data among the plurality of data stored in the storage means is being reproduced. Control is performed to reproduce one main data in the data.

  The reproducing apparatus according to the present invention controls the search number of data stored in the storage unit based on the operation speed of the operation unit operated by the user when reproducing a plurality of data stored in the storage unit. Therefore, it is possible to search for a plurality of data stored in the storage means according to the operation speed of the operation means, and even if a large number of data is stored in the storage means, the purpose and The data to be searched can be quickly searched and reproduced.

It is a circuit block diagram of the IC recorder to which the present invention is applied. It is a figure showing the appearance of an IC recorder roughly. It is a figure for demonstrating the structure of a jog dial, (A) is the figure showing the external appearance from the front side, (B) is the figure showing the external appearance from the back side. It is the figure which showed the output waveform of the rotation direction of a jog, and the signal detected with respect to it. It is a figure for demonstrating the operation of the jog regarding cue / review reproduction | regeneration, and the transfer of the reproduction | regeneration state with respect to it. It is the figure which showed the process when operation of rotation of a jog or a press is performed from the stop state. It is the figure which showed the process when operation of rotation of a jog or a press is performed from the reproduction | regeneration state of audio | voice data.

  An embodiment of a recording / reproducing apparatus according to the present invention will be described in detail with reference to the drawings. In the embodiment described below, an audio signal from a microphone is converted into audio data and written to a semiconductor memory as a recording medium, and audio data stored in the semiconductor memory is read out from a speaker. The recording / reproducing apparatus of the present invention is applied to an IC recorder that outputs sound based on audio data. This IC recorder is capable of verbally storing necessary items as voice data, instead of a user writing predetermined items in a memo.

  As shown in FIG. 1, the IC recorder 1 converts a sound signal from the microphone 11 into sound data and stores the sound data in the semiconductor memory 9 and the sound data stored in the semiconductor memory 9. A reproduction unit 20 that reads out and converts into audio signals to drive the speaker 24, a control unit 30 that controls the recording unit 10 and the like, a display unit 40 that displays operation states and operation procedures, and various operations performed by the user And an operation unit 50.

  The recording unit 10 includes an amplifier 12 that amplifies the audio signal from the microphone 11 and an automatic gain controller (hereinafter referred to as AGC) 13 that sets the level of the audio signal amplified by the amplifier 12 to an appropriate level. And an encoder 14 that converts the audio signal from the AGC 13 into audio data, and a buffer memory 15 that temporarily stores the audio data from the encoder 14.

  In the recording unit 10, sound input from the microphone 11 is converted into an audio signal and supplied to the amplifier 12, and the amplifier 12 amplifies the audio signal and supplies it to the AGC 13. Then, the AGC 13 amplifies the audio signal amplified by the amplifier 12 so that the level becomes an appropriate level, and supplies the amplified signal to the encoder 14.

  Since the audio signal has a strong temporal correlation, the encoder 14 encodes the audio signal with a small amount of data by, for example, adaptive differential pulse code modulation (hereinafter referred to as ADPCM), and converts the audio data into The audio data is generated and supplied to the buffer memory 15.

  The buffer memory 15 temporarily stores the audio data supplied from the encoder 14 and supplies it to the semiconductor memory 9.

  In the semiconductor memory 9, for example, an electrically erasable / programmable read-only memory (hereinafter referred to as an EEPROM) is turned off. However, the memory content of the memory element is a nonvolatile semiconductor memory that is retained without being erased. The semiconductor memory 9 stores the audio data supplied from the buffer memory 15 and also stores management information (hereinafter referred to as TOC information) for managing in which area each audio data is stored. Specifically, the semiconductor memory 9 has a storage capacity of 4M × 8 bits, for example, and can store audio data corresponding to an audio signal in a predetermined band for about 30 minutes.

  On the other hand, as shown in FIG. 1, the playback unit 20 amplifies the audio signal from the decoder 21 and the filter 22 that converts the audio data read from the semiconductor memory 9 into an audio signal, and the audio signal from the filter 22 to the speaker 24. And an amplifier 23 to be supplied.

  The decoder 21 corresponds to the encoder 14 of the recording unit 10 and decodes audio data read from the semiconductor memory 9, that is, audio data encoded by the ADPCM method, and generates a so-called PAM signal. The filter 22 removes a high frequency component of the voice band or higher from the PAM signal and outputs a voice signal. The amplifier 23 amplifies the audio signal supplied from the filter 22 and drives the speaker 24. Thus, the recorded sound is output from the speaker 24.

  The control unit 30 includes a ROM 31 that stores a program for controlling the operation of the IC recorder 1 and a microcomputer (hereinafter referred to as a CPU) that controls each block by executing the program stored in the ROM 31. ) 32 and a random access memory (hereinafter referred to as RAM) 34 for temporarily storing time, program execution results, and the like.

  The display unit 40 displays the operation state of the IC recorder 1 and the storage state of audio data based on a control signal from the control unit 30, and illuminates the liquid crystal display panel 41 and the liquid crystal display panel 41. The backlight 42 is provided.

  The operation unit 50 supplies various input signals to the control unit 30 when recording / reproducing audio. The operation unit 50 includes various operation buttons, operation switches, and a jog dial, which will be described later, for the user to operate during recording / reproduction. In the IC recorder 1, various input signals from these operation buttons / switches and the jog dial are supplied to the control unit 30.

  Based on an input signal from the operation unit 50, the CPU 32 of the control unit 30 reads out and executes a program corresponding to the input signal from the ROM 31, and controls each block. For example, when a recording start button to be described later is pressed, the CPU 32 reads out and executes a program corresponding to recording from the ROM 31, operates the amplifier 12, the AGC 13, the encoder 14, the display unit 40, etc., and is temporarily stored in the buffer memory 15. The audio data is stored in a free area of the semiconductor memory 9, for example. When reproducing the audio data, the CPU 32 reads out and executes a program corresponding to the reproduction from the ROM 31 and operates the decoder 21, the filter 22, the amplifier 23, the display unit 40, etc. The audio data stored in is read out and output to the speaker 24.

  The control unit 30 controls the writing and reading of the audio data to and from the semiconductor memory 9 in this way. For example, the control unit 30 performs control to write up to 99 pieces of audio data to the semiconductor memory 9 with an index number for identifying each. In addition, the control unit 30 performs control for reading audio data from the semiconductor memory 9 based on the index number.

  Next, the operation unit 50 of the IC recorder 1 will be described with reference to FIGS. FIG. 2 schematically shows the appearance of the IC recorder 1. The IC recorder 1 shown in FIG. 2 is portable, and electrical circuits such as the recording unit 10 and the reproduction unit 20 described above are mounted inside an exterior casing 2 that is configured to be gripped with a palm. A printed circuit board (not shown) is provided. In addition, the liquid crystal display panel 41 and the speaker 24 described above are disposed on the main surface portion 2 a of the exterior housing 2.

  In the IC recorder 1, various operation buttons / switches 51 to 57 constituting the operation unit 50, and a jog dial 60 are disposed on the main surface 2 a and each side surface of the exterior housing 2. As a result, the IC recorder 1 can be operated while being gripped with the left hand, and can be used in combination with work such as writing normally performed by the user with the right hand.

  Here, as the operation buttons, as shown in FIG. 2, a file (FILE) button 51, a menu (MENU) button 52, a priority (PRIORITY) button 53, and a stop (STOP) for stopping recording or the like. A button 54, a recording start (REC) button 55 for starting recording, and an erasing (ERASE) button 56 for erasing audio data stored in the semiconductor memory 9 are respectively the main surface portions of the outer casing 2. 2a. In addition, as an operation switch, a slide-type hold switch 57 is attached slightly below the left side surface portion 2 b of the exterior housing 2. The operation unit 50 includes a volume for adjusting the volume of reproduced sound, an earphone jack, and the like, and each is provided on a side surface of the exterior housing 2 although not shown.

  Here, the file button 51 is a button for switching a file set in the IC recorder 1. The file referred to here corresponds to a directory or folder used in the personal computer, and in this embodiment, five types of files are set. In other words, the IC recorder 1 can store up to 99 audio data for each file. Each file is identified by displaying different icons on the liquid crystal display panel 41.

  The menu button 52 is a button that is pressed while recording / reproduction is stopped in order to change the initial setting of the IC recorder 1 or the like. Here, changes in the initial settings include, for example, changes in date and time, changes in timer ON / OFF, changes in the band of audio data to be recorded, beep sounds when various operation buttons are pressed, alarm sounds, etc. For example, a change in the sensitivity of the microphone 11 and the like.

  The priority button 53 is a button that is pressed during playback or stop to give priority to playback of recorded audio data. In the IC recorder 1, when the priority button 53 is pressed, the index number of the target audio data is changed to a lower number, and the audio data is preferentially reproduced in the file.

  The hold switch 57 is a switch for maintaining the operation or stop state of the IC recorder 1. When the hose switch 57 is turned on, the IC recorder 1 is in a state where it does not accept operations of the operation buttons 51 to 56, the jog dial 60, and the like.

  In the IC recorder 1, a part of the jog dial 60 is exposed from a notch 2c formed on the upper side of the left side surface 2b of the exterior housing 2. The jog dial 60 has a disk-like rotation operation member 61 having a rotation center shaft 62 and various members whose details will be described later, and most of these constituent members are accommodated in the outer casing 2. A part of the rotation operation member 61 faces outward from the notch 2c. The rotation operation member 61 of the jog dial 60 is rotatable in the A and B directions shown in FIG.

  Furthermore, the rotation operation member 61 of the jog dial 60 has a rotation center shaft 62 that can move in the X and Y directions shown in FIG. 2 in the exterior housing 2. In a normal state, the rotation operation member 61 moves in the Y direction by a spring (not shown). It is energized. Therefore, the rotation operation member 61 of the jog dial 60 can be rotated in the AB direction and can be pressed in the X direction orthogonal to the rotation center axis 62 by a user operation.

  The jog dial 60 is supplied with an input signal corresponding to the rotation angle and the rotation speed and is pressed in the X direction by rotating the rotation operation member 61 in the AB direction. Thus, an input signal corresponding to the pressing time is supplied to the control unit 30. Specifically, in the IC recorder 1, the control unit 30 detects the rotation direction, the rotation angle, and the rotation speed of the rotation operation member 61, or whether or not the rotation operation member 61 is pressed, and further the press 1 is read and executed from the ROM 31 to control each block shown in FIG. 1. The detailed contents of this control will be described later.

  The jog dial 60 is operated in various cases such as to perform various operations during reproduction or to change the initial setting described above, and is frequently used. Therefore, the jog dial 60 is disposed at the position as described above, so that when the user grips the exterior housing with the left hand, the rotation operation member 61 can be rotated and pressed only with the thumb. Yes.

  Further, the configuration of the jog dial 60 will be described with reference to FIGS. Here, FIG. 3A shows the appearance from the front side (the main surface portion 2a side of the exterior housing 2) of the jog dial 60, and FIG. 3B shows the appearance from the back side. As shown in FIG. 3, the jog dial 60 includes the rotation operation member 61 described above, a base member 63 to which the rotation operation member 61 is attached, a plate spring-like electrode 64, four terminals a attached to the base member 63, It consists of b, c, d, etc.

  The base member 63 is formed of an insulating member, and the main surface portion 63a shown in FIG. 3B is attached to the inside of the exterior casing 2 to fix the entire jog dial 60 to the exterior casing 2. Further, as shown in FIG. 3B, the base member 63 has a substantially oval cutout hole 65 that is long in the XY direction, and one of the rotation operation members 61 is provided with respect to the cutout hole 65. A circular rotation center shaft 62 formed at the center of the main surface portion 61a is fitted so as to be rotatable and movable in the XY directions. Thereby, the jog dial 60 is configured such that the rotation operation member 61 is rotatable in the AB direction and movable in the XY directions orthogonal to the rotation center shaft 62.

  As shown in FIG. 3A, the electrode 64 is formed in a leaf spring shape, and its proximal end is fixed on the base member 63. Moreover, each terminal a, b, c, d attached to the base member 63 is connected to the control unit 30 shown in FIG. Here, the terminal a and the terminal b are for supplying an input signal based on the rotation of the rotation operation member 61. The terminal d is for supplying an input signal based on pressing of the rotation operation member 61 in the X direction. Further, the terminal c serves as a common ground for the terminals a, b, and d.

  When the rotary operation member 61 is pressed in the X direction, the tip 64a of the electrode 64 moves in the X direction and contacts another electrode (not shown). The jog dial 60 supplies an input signal from the terminal d to the control unit 30 by this contact of the electrode 64, and stops supplying the input signal when the contact is released by stopping the pressing of the rotation operation member 61. The control unit 30 detects the supplied input signal, further detects whether or not the supply of the input signal has been continuously performed for a predetermined time or more, and reads and executes a program corresponding to the result from the ROM 31. To do.

  Further, the jog dial 60 outputs a two-phase pulse signal as shown in FIG. 4 by the rotation of the rotation operation member 61 in the A direction or the B direction. That is, when the rotation operation member 61 is rotated to the right, the signal α is output from the a-c terminals and the signal β is output from the bc terminals with different phases. Similarly, by rotating the rotation operation member 61 counterclockwise, the signal α is output from between the a-c terminals and the signal β is output from between the bc terminals with different phases. Here, in the jog dial 60, as shown in FIG. 4, when the rotation operation member 61 is rotated to the right, the phase of the signal β is slightly delayed from that of the signal α. The pulse signal is output so that the phase is slightly delayed from the signal β. Therefore, the control unit 30 can detect the direction of rotation of the rotation operation member 61 by detecting which phase is delayed between the signal α and the signal β.

  The jog dial 60 outputs the pulses of the signal α and the signal β by 15 times by rotating the rotation operation member 61 left or right (360 degrees). That is, when the rotation operation member 61 is rotated by 1/15 (24 degrees), the pulses of the signal α and the signal β are each output once. Therefore, the control unit 30 can detect the rotation angle of the rotation operation member 61 by counting the number of pulses output from the jog dial 60, and further count the number of pulses per predetermined time, The rotational speed of the rotary operation member 61 can be detected.

  In the IC recorder 1 configured as described above, icons corresponding to various files are displayed on the liquid crystal display panel 41 based on the control of the control unit 30 by, for example, pressing the file button 51 before recording. Then, the rotation operation member 61 of the jog dial 60 is rotated to select any icon, and by pressing the rotation operation member 61, the icon is specified and the audio data is stored in any file. Is determined by the control unit 30. Further, by pressing the menu button 52 prior to recording, the initial setting state is displayed on the liquid crystal display panel 41 under the control of the control unit 30. When changing the initial setting, the rotation operation member 61 is rotated to select a target item, and the rotation operation member 61 is pressed to change the setting of the item.

  The IC recorder 1 enters a recording start state when the recording start button 55 is pressed. When the user utters a sound toward the microphone 11, the sound data is stored in a designated area of the semiconductor memory 9. Written. When the stop button 55 is pressed, the recording process is canceled. At this time, the audio data is recorded in the semiconductor memory 9, and the TOC information, the file number, and the index number are recorded.

  Next, when the recorded audio data is reproduced in the IC recorder 1, for example, when the file button 51 is pressed as in recording, icons corresponding to various files are displayed on the liquid crystal display under the control of the control unit 30. Displayed on the panel 41. Then, the rotation operation member 61 of the jog dial 60 is rotated to select one of the icons, and by pressing the rotation operation member 61, the audio data stored in any file is designated. The control unit 30 determines whether to reproduce. In the liquid crystal display panel 41 shown in FIG. 2, only the display relating to the index number is shown for convenience of explanation, but in actuality, various displays such as the icon and time are displayed. Here, the display of “02/37” on the liquid crystal display panel 41 shown in FIG. 2 indicates that the number of audio data in which the number of denominators is recorded is the number of numerators currently reproduced or immediately reproducible. Represents the index number of the audio data. Accordingly, in this case, 37 pieces of audio data are stored in a certain file, and the audio data having the index number 02 is being reproduced or can be reproduced immediately (hereinafter referred to as the immediately reproducible state). Is simply called a stopped state).

  Here, when the IC recorder 1 is in a stopped state, the reproduction operation is started by operating the rotation operation member 61 of the jog dial 60 as follows.

  When the rotation operation member 61 is rotated to the left, that is, in the A direction, the control unit 30 executes the forward search control. Specifically, the control unit 30 reads out the subsequent index number from the semiconductor memory 9 according to the number of detected pulse signals and sequentially displays it on the liquid crystal display panel 41 (in this case, 03/37, 04/37). , 05/37,... On the other hand, when the jog dial 60 is rotated in the right direction, that is, in the B direction, the control of the reverse search is executed by the control unit 30. Specifically, the control unit 30 reads the previous index number from the semiconductor memory 9 according to the number of detected pulse signals (in this case, 01, 37, 36,...). ) Control to sequentially display on the liquid crystal display panel 41 is performed.

  When the index number of the audio data to be reproduced is determined and the rotation operation member 61 is pressed, the control unit 30 starts reproducing the audio data corresponding to the index number based on the detected input signal. To control. In addition, when the rotation operation member 61 is pressed for a short time in this playback state (hereinafter, this short press is referred to as a short press), the control unit 30 performs control to stop the playback of audio data. When the rotation operation member 61 is pressed for a predetermined time or longer in this playback state (hereinafter, this long press is referred to as “long press”), the control unit 30 controls repeat playback described later.

  Next, various functions during reproduction in the IC recorder 1 will be described. The IC recorder 1 is provided with a so-called cue & review playback function, repeat playback function, and scan playback function during playback, and these functions can be executed only by operating the rotary operation member 61 of the jog dial 60. It has become.

  FIG. 5 shows the operation of the rotary operation member 61 related to the cue / review reproduction and the transition of the reproduction state corresponding thereto. For convenience of explanation, the rotation operation member 61 of the jog dial 60 is hereinafter simply referred to as the jog 61. When performing cue / review, when the reproduction is started or after the reproduction is started, the jog 61 is pressed in the X direction and rotated in any direction of AB to a predetermined angle. As shown in FIG. 5, in this embodiment, when the jog 61 is pressed and rotated in the left direction, that is, in the A direction, the control unit 30 controls the cue reproduction. When it is rotated in the direction, review playback is controlled. This cue / review reproduction is, for example, 10 times speed, and is continuously executed while the pressing of the jog 61 is maintained. On the other hand, when the press of the jog 61 in the X direction is released and the supply of the input signal based on the press is stopped, the control unit 30 stops the cue / review playback and returns to the normal speed playback. Take control. Further, as shown in FIG. 5, even when the jog 61 is rotated to the right, that is, in the B direction during the cue reproduction, or even when the jog 61 is rotated to the left, that is, in the A direction during the reproduction of the review. Similarly, the control 30 returns to normal speed playback.

  In this embodiment, when the end of the audio data is reached by the cue reproduction, the control unit 30 performs control to stop the cue reproduction and stop at the head portion of the audio data. ing. On the other hand, when the head portion of the first audio data is reached in the review reproduction, the control unit 30 performs control to stop the review reproduction and stop at the head portion of the audio data. . In other words, the IC recorder 1 is controlled so as not to stop at the head portion of the audio data in the middle in either the cue reproduction or the review reproduction.

  When the jog 61 is pressed and held while the audio data is being reproduced, the control unit 30 controls repeat reproduction for the one audio data. In this embodiment, control is performed so that one piece of audio data is repeatedly reproduced by the repeat reproduction. When the jog 61 is pressed or rotated again during the repeat reproduction, the repeat reproduction is canceled and the normal reproduction is resumed. Also, when either the stop button 54 or the delete button 56 is pressed, the repeat reproduction is canceled and control is returned to normal reproduction.

  Furthermore, as shown in FIG. 6, when the jog 61 is pressed and held from the stopped state, the control unit 30 controls the scan reproduction. That is, when the jog 61 is continuously pressed in the X direction for a certain time from the stop state, the control unit 30 performs control to detect the pressed time and start scan reproduction. Here, scan reproduction means that when a plurality of pieces of audio data are stored in a certain file, the first part of the total number of pieces of audio data stored in the file is determined for a certain time (for example, 5 seconds). This is a reproduction method of reproducing.

  Here, the determination as to whether or not to perform scan reproduction is made based on whether or not an input signal based on the pressing of the jog 61 is continuously detected for 3 seconds or more from the start of pressing. That is, the control unit 30 performs scan reproduction control when the input signal is continuously detected for 3 seconds or more from the start of pressing the jog 61, and performs normal reproduction control when the input signal is 3 seconds or less. Run.

  After the scan reproduction is started, the scan reproduction control is continued even if the pressing of the jog 61 is released. Then, when the scan reproduction of the last audio data of the file is completed, the control unit 30 controls to return to the top of the first audio data and stop.

  When the jog 61 is rotated during the scan reproduction, the control unit 30 changes the reproduction to the reproduction of the audio data for the index number before or after according to the number of pulse signals generated by the rotation and performs the scan reproduction. Control to continue. When the target sound is heard during the scan reproduction, the jog 61 is pressed in the X direction while the sound data is being reproduced. In this case, the control unit 30 executes control to return to the normal playback mode as shown in FIG. This operation makes it possible to listen to the audio data from the beginning to the end. Note that when the stop button 54 is pressed during the scan reproduction, the control unit 30 controls to cancel the scan reproduction based on the input signal so as to enter the stop state.

  In this embodiment, when the erasing button 56, the file button 51, and the priority button 53 are pressed during scan reproduction, the control unit 30 does not matter whether the hold switch 57 is on or off. Control is performed so as to invalidate each input signal based on pressing of these buttons.

  In the IC recorder 1, when the jog 61 is rotated in the A direction or the B direction, the control unit 30 detects the rotation speed as described above, and performs processing according to the speed. .

  FIG. 6 also shows a process when the jog 61 is rotated from the stop state. As is apparent from FIG. 6, in the IC recorder 1, when the jog 61 is rotated to the left, that is, in the A direction from the stopped state, the control unit 30 determines the order of each case when the rotation speed is low. The direction search is controlled, and the index number displayed on the liquid crystal display panel 41 is incremented by one. On the other hand, when the rotation speed of the jog 61 is fast, the control unit 30 performs forward search control in which many items are skipped so as to increase the index numbers displayed on the liquid crystal display panel 41 at a stretch.

  Similarly, when the jog 61 is rotated to the right, that is, in the B direction from the stopped state, the control unit 30 performs reverse search control for each case when the rotation speed is low, and the liquid crystal display panel 41 is controlled. Decrease the displayed index number by one. On the other hand, when the rotational speed of the jog 61 is fast, the control unit 30 performs reverse search control in which a large number of items are skipped so as to reduce the index numbers displayed on the liquid crystal display panel 41 at a stretch.

  As a result, in the IC recorder 1, the number of audio data recorded in the semiconductor memory 9 is so large that even if the index number becomes very large, the index number can be obtained by rotating the jog 61 quickly. The target index number can be quickly displayed on the liquid crystal display panel 41 by skipping a large number. Therefore, according to the IC recorder 1, the searchability of the index number before reproduction is greatly improved, and the target audio data can be reproduced quickly with a simple operation.

  Further, FIG. 7 shows processing when the jog 61 is rotated from the reproduction state of the audio data. As is apparent from FIG. 7, in the IC recorder 1, when the jog 61 is rotated to the left, that is, in the A direction from the playback state, the control unit 30 determines the order of each case when the rotation speed is low. Control the direction search. Specifically, the control unit 30 performs control to increase the index number displayed on the liquid crystal display panel 41 by 1 and reproduce the corresponding audio data from the head portion. On the other hand, when the rotation speed is high, the control unit 30 controls the forward search in which many items are skipped. Specifically, the control unit 30 performs control to increase the index number displayed on the liquid crystal display panel 41 at once, and to reproduce the corresponding audio data from the head portion.

  Similarly, when the jog 61 is rotated to the right, that is, in the B direction from the reproduction state, the control unit 30 performs reverse search control for each case when the rotation speed is low. Specifically, the control unit 30 performs control to decrease the index number displayed on the liquid crystal display panel 41 by one and reproduce the corresponding audio data from the head portion. On the other hand, when the rotational speed of the jog 61 is fast, the control unit 30 controls the reverse search in which many items are skipped. Specifically, the control unit 30 performs control to reduce the index number displayed on the liquid crystal display panel 41 at once and reproduce the corresponding audio data from the head portion.

  Thus, in the IC recorder 1, even when the number of audio data recorded in the semiconductor memory 9 is very large, a large number of audio data is skipped by a simple operation of rotating the jog 61 quickly. Since the first part of the audio data is reproduced promptly, the searchability of the audio data being reproduced is greatly improved.

  As described above, the IC recorder 1 has many functions assigned to the jog dial 60, which can contribute to improvement in operability, miniaturization and weight reduction of the entire apparatus. Specifically, since it is possible to perform all the basic operations during playback by rotating and pressing the jog 61 with one thumb of the left hand, it is not necessary to move the finger around for playback, and operability is improved. Greatly improved. In addition, since many functions are assigned to the jog dial 60, the number of operation buttons and operation switches can be reduced as a whole, which makes it easier to visually understand the operation of the IC recorder 1, and the overall size and weight of the apparatus is small. Can be realized.

  Although the IC recorder 1 has been described in detail above, the recording / reproducing apparatus according to the present invention is not limited to this, and can be applied to all recording devices, particularly portable devices that are convenient to carry. . Further, although the example of the audio data recording / reproducing apparatus has been described in detail, it is needless to say that the present invention may be a recording / reproducing apparatus for recording / reproducing dynamic data other than audio data. is there.

DESCRIPTION OF SYMBOLS 1 IC recorder, 2 exterior housing | casing, 9 semiconductor memory, 10 recording part, 20 reproduction | regeneration part, 30 control part, 40 display part, 41 liquid crystal display panel, 50 operation part, 60 jog dial, 61 rotational operation member (jog), 62 Rotation center axis

Claims (8)

Storage means for storing a plurality of data each including management data corresponding to main data;
Reproduction means for reproducing main data among the plurality of data stored in the storage means;
An operation means for user operation that allows both rotation operation and pressing operation with only the thumb of the left hand of the user while the user holds with the left hand,
An operation speed detection means for detecting the speed of the rotation operation of the operation means by counting the number of pulses output during a predetermined period ;
It is determined whether the speed of the rotation operation of the operating means detected by the operating speed detecting means is faster than a predetermined speed, and the search of the data stored in the storage means is controlled based on the determination result. Control means,
The control means includes
If the speed of the rotational operation of the operation means determines that slower than the predetermined speed, the index in the management data is increased or decreased by one in response to the pulse, the rotation operation of the operation means When it is determined that the speed is faster than the predetermined speed, a search is performed while increasing or decreasing two or more indexes in the management data according to the pulse ,
A reproduction apparatus, wherein a specific portion of the management data is selected in response to a pressing operation of the operation means.   2. The reproducing apparatus according to claim 1, wherein the control unit searches the data in a direction in which the index is increased based on a direction of a rotation operation of the operation unit.   2. The reproducing apparatus according to claim 1, wherein the control means searches for the data in a direction in which the index is decreased based on a direction of a rotation operation of the operation means.   The control means controls so that one main data among the plurality of data is reproduced by the reproduction means when there is an instruction to reproduce the main data for the searched index. The reproducing apparatus according to 1.   The control means is configured to, when one main data among the plurality of data stored in the storage means is being reproduced, the plurality of data being reproduced based on the direction of the rotation operation of the operation means. 3. The reproducing apparatus according to claim 2, wherein one main data is queue-reproduced.   The control means is configured to, when one main data among the plurality of data stored in the storage means is being reproduced, the plurality of data being reproduced based on the direction of the rotation operation of the operation means. The reproduction apparatus according to claim 2, wherein one main data is reviewed and reproduced.   The control means intermittently stores the plurality of data based on the direction of the rotation operation of the operation means when one main data of the plurality of data stored in the storage means is being reproduced. 3. The reproducing apparatus according to claim 2, wherein the main data is controlled to be reproduced.   The control means intermittently stores the plurality of data based on the rotational speed of the operation means when one main data of the plurality of data stored in the storage means is being reproduced. 7. A playback apparatus according to claim 6, wherein the main data is controlled to be played back.

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