JP4073279B2 - Recording medium playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording medium reproducing apparatus capable of selecting and reproducing desired data from a recording medium on which a plurality of data is recorded.
[0002]
[Prior art]
In a conventional recording medium reproducing apparatus such as a CD or MD reproducing apparatus, when reproducing a desired track of a recording medium, a method of directly inputting a track number using 10-key input or a 10-key is adopted. For devices that do not, the method of using the UP / DOWN key or the like is used.
[0003]
However, if the number of tracks increases, an apparatus that does not employ 10-key input has to repeatedly press the UP / DOWN key by the desired number of tracks, which is very laborious. In addition, even with 10-key input, an input space dedicated to 10-keys or a remote control with 10-keys is required, which increases costs and affects the design. In particular, in a vehicle-mounted or portable device, it is easy to cause difficulty in arrangement and design of 10 keys.
[0004]
By the way, even when the key arrangement space is limited, an operation system for an in-vehicle device that can execute a desired input operation with a single touch according to the user's preference is disclosed (for example, see Patent Document 1). Thus, by registering operations frequently used by the user in advance, a desired operation can be performed simply by pressing and holding the key.
[0005]
[Patent Document 1]
JP 2002-2416 A (page 3-6, FIG. 2)
[0006]
[Problems to be solved by the invention]
However, the technique of Patent Document 1 must register a desired operation in advance. For this reason, it cannot be applied to such a CD or MD that changes in a timely manner, such as a track selection number. Therefore, for example, when it is desired to reproduce data of 75 tracks out of 100 tracks in a device that does not employ the 10 key, the UP / DOWN key must be pressed 75 times, which requires a lot of trouble.
[0007]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a recording medium playback apparatus capable of selecting desired data with a small number of operations without taking time and effort even when 10 keys are not employed. To do.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a recording medium reproducing apparatus of the present invention is a recording medium reproducing apparatus capable of selecting and reproducing a desired track from a recording medium in which a plurality of tracks are stored.
A first switch for selecting track jump for each track;
A second switch for selecting a track jump for each of a predetermined number of tracks equal to or greater than two, and the first switch is used both as a switch for selecting a track jump for each track and a switch for switching modes. The second switch functions as a switch other than selecting a track jump when the mode is not selectable by switching the mode.
[0009]
According to this configuration, even when 10 keys cannot be adopted as in the past due to space and design, the first switch and the second switch can be used efficiently to reduce the number of operations with less effort. Can be selected.
[0010]
In the recording medium playback apparatus, the second switch functions as a switch for selecting a track jump in a mode in which a track can be selected by switching modes, and in a mode in which a track cannot be selected. Can function as a switch other than selecting a track jump, and can effectively use the space of the operation unit.
[0011]
Further, the second switch can function as a volume adjustment switch for adjusting the volume at the time of reproduction in a mode in which selection of a track is not possible. Usually, a knob is often used as a volume control switch, and desired data can be selected more quickly and easily by rotating the knob.
[0012]
In the recording medium reproducing apparatus, the first switch can be used as a switch for selecting a track jump for each track and a mode switching switch for switching modes. Since a mode in which a track can be selected can be obtained by pressing a function switch related to track selection, there is no need to provide a dedicated mode selection key or the like, and the user can switch modes without hesitation.
[0013]
Further, in the recording medium playback device, by associating the volume scale of the volume control switch with the number of tracks, when the volume control switch is moved by a predetermined scale, the track jumps by the number of tracks associated with the track, When moved in the direction opposite to the moved direction, the track is returned by the number of tracks associated with the moved scale.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the recording medium playback apparatus 10. In FIG. 1, the recording medium playback apparatus 10 shows an in-vehicle MD playback apparatus as an example.
[0015]
The recording medium playback apparatus 10 in FIG. 1 includes an operation unit 12 provided with a plurality of switches 11a to 11m each having a function, a display unit 13 including an LCD, and a recording medium loading unit 14 for loading an MD. Composed. Reference numeral 11a denotes a volume control knob that can adjust the volume by rotating clockwise / counterclockwise. When a playback track selection screen is displayed, the cursor is set for each predetermined number of tracks (for example, 10). Functions as a fast-forward switch to move. Reference numeral 11b denotes an UP / DOWN key as a forward switch for moving the cursor to a desired position one by one when a display image on the display unit 13 is selectable. 11c is a reproduction / pause key for the recording medium, 11d is a stop key, 11e is an FF key, and 12f is a REW key. Although 11g-11m has an individual function, description is abbreviate | omitted here.
[0016]
FIG. 2 is a block diagram showing a configuration of the recording medium playback apparatus 10 of FIG. An operation unit 12, a display unit 13, a storage unit 21, and a recording medium reproduction control unit 22 are connected to a control unit 20 that controls the operation of the recording medium reproduction device 10. Further, a recording medium loading unit 14 is connected to the recording medium reproduction control unit 22.
[0017]
The storage unit 21 stores an operation program of the control unit 20, functions of the switches 11a to 11m of the operation unit 12, and the like. The recording medium reproduction control unit 22 reads information on the recording medium based on the control unit 20 and converts it into a reproduction signal.
[0018]
Next, the operation of the recording medium playback apparatus 10 will be described. By operating the switches 11c to 11f, it is possible to reproduce the recording medium in the same manner as a general MD reproducing apparatus. At that time, the recording medium reproducing apparatus 10 receives the signals of the switches 11 c to 11 f by the control unit 20, reads the functions of the received signals from the storage unit 21, and sends them to the recording medium reproduction control unit 22. In response to this, the recording medium reproduction control unit 22 reproduces the recording medium loaded in the recording medium loading unit 14.
[0019]
Next, a case where a desired track is designated and reproduced will be described. FIG. 3 is a flowchart showing the operation of the recording medium playback apparatus 10. In step S10, when the recording medium is loaded in the recording medium loading unit 14, when the UP / DOWN key 11b is pressed regardless of the reproduction / stop state, the process proceeds to step S11 to select a track to be reproduced. The track selection mode is enabled, and a track selection screen 30 as shown in FIG. In FIG. 4, the reverse color track indicates the position where the cursor is currently located. If the recording medium is being reproduced, the cursor position may be displayed in accordance with the currently reproduced track. If the recording medium is in a stopped state, the cursor position may be displayed on the track 1 and displayed. The display content may be a track number and title as shown in FIG. 4, or only the track number may be displayed.
[0020]
Then, the process proceeds from step S11 to step S12 to determine whether or not the UP / DOWN key 11b has been pressed. When the UP / DOWN key 11b is pressed in step S12, the process proceeds to step S13, the current cursor position is moved by one track according to either the UP key or the DOWN key, and then the process proceeds to step S14. On the other hand, when the UP / DOWN key 11b is not pressed in step S12, the process proceeds to step S14 as it is.
[0021]
In step S14, it is determined whether or not the volume control knob 11a has been operated. Since the track selection mode is currently being used, the volume control knob functions as a fast-forward switch that moves the cursor for each predetermined number of tracks (here, 10). The cursor position advances by 10 tracks each time the scale is rotated clockwise, and the cursor position returns by 10 tracks each time the scale is rotated counterclockwise.
[0022]
When the volume control knob 11a is operated in step S14, the process proceeds to step S15, the current cursor position is moved by 10 tracks according to the rotation direction of the volume control knob 11a, and then the process proceeds to step S16. For example, when the volume control knob 11a is rotated one graduation clockwise in the state of FIG. 4, the display unit 13 displays a track selection screen 40 in which the cursor is on the track 15 as shown in FIG. On the other hand, when the volume control knob 11a is not operated in step S14, the process proceeds to step S16 as it is.
[0023]
In step S16, it is determined whether or not the play / pause key 11c has been pressed. The function of the playback / pause key 11c in the track selection mode is to start playback of the track at the cursor position. When the play / pause key 11c is pressed in step S16, it is determined that a desired track has been selected, and the process proceeds to step S17 to start playing the track at the cursor position and end the track selection mode. On the other hand, when the play / pause key 11c is not pressed in step S17, the process proceeds to step S18.
[0024]
In step S18, it is determined whether or not the stop key 11d has been pressed. When the stop key 11d is pressed in step S18, it is determined that the track selection mode is cancelled, and the process proceeds to step S19 to cancel and end the track selection mode. On the other hand, when the stop key 11d is not pressed in step S18, it is determined that the track is still being selected, and the process returns to step S12.
[0025]
In the above track selection mode, for example, to select the track 75, when the cursor is on the track 1, the volume control knob 11a is rotated by 7 scales clockwise, and then the UP key of the UP / DOWN key 11b is pressed. It is only necessary to press five times and then press the play / pause key 11c.
[0026]
According to the recording medium playback apparatus 10 described above, the UP / DOWN key 11b and the volume control knob (fast forward switch) 11a are used in the track selection mode even when the 10 key is not used in the operation unit or the remote controller as in the prior art. By doing so, it is possible to select a desired track with a small number of operations without trouble.
[0027]
The predetermined number of cursor movements of the fast-forward switch described in step S15 in FIG. 4 and the like may be set in advance by the user. Thus, it is possible to provide a recording medium playback device that is easy for individual users to use.
[0028]
In the above embodiment, the volume control knob 11a is also used as the fast-forward switch. However, the fast-forward switch may be used as any of the other switches 11e to 11m. Moreover, although shown as the volume control knob 11a in FIG. 1, it is not limited to a knob and may be a key or a slide type.
[0029]
The fast-forward switch function can also be used as one or more switches. For example, the volume control knob 11a has a function of moving every 10 tracks as described above, and the FF key 11e and the REW key 11f May have a function of moving every 50 tracks. Furthermore, it is possible to provide another key with a function of moving by a different predetermined number.
[0030]
In addition, the cursor movement of a predetermined number of tracks using the fast-forward switch makes it easy to see the screen because the track number is switched continuously if one screen is sent each time the key is pressed according to the number of displayed tracks. Easy to use.
[0031]
In the present invention, the display unit may be a separate display device, and the recording medium playback device may be provided with a connection terminal with the display device.
[0032]
The recording medium playback apparatus of the present invention is not limited to the in-vehicle MD playback apparatus described in the above embodiment, and is applied to a recording medium playback apparatus in which a plurality of sessions, files, and tracks are recorded. For example, it can be used for a CD playback device, a DVD playback device, and the like. In particular, the present invention can be effectively used for a small-sized device having no space for 10 keys such as a vehicle-mounted device or a portable device.
[0033]
【The invention's effect】
According to the recording medium reproducing apparatus of the present invention, the operation unit includes a plurality of switches each having a function. The operation unit includes a first switch that selects a track jump for each track, and two or more switches. By providing a second switch for selecting a track jump for each predetermined number of tracks, the first switch and the second switch can be used even when 10 keys cannot be employed as in the prior art due to space and design. By using it efficiently, it is possible to select desired data with a small number of operations without trouble.
[0034]
According to the present invention, the second switch functions as a switch for selecting a track jump in a mode in which a track can be selected by switching modes, and in a mode in which a track cannot be selected, By functioning as a switch other than selecting the jump, it is not necessary to provide the second switch as a single switch. In other words, it can also be used as a switch for selecting a track only when data is selected in combination with a switch having other functions, and the space of the operation unit can be used effectively.
[0035]
Further, according to the present invention, the second switch can function as a volume adjustment switch for adjusting the volume at the time of reproduction in a mode in which a track cannot be selected. Usually, a knob is often used as a volume control switch, and desired data can be selected more quickly and easily by rotating the knob.
[0036]
According to the present invention, the first switch can be used both as a switch for selecting a track jump for each track and a mode switching switch for switching modes. When a switch for selecting a track is pressed, a mode in which the track can be selected is entered. Therefore, there is no need to provide a dedicated mode selection key or the like, and the user can switch modes without hesitation.
[0037]
According to the present invention, it is possible to perform the track jump of the number of tracks corresponding to the scale indicating the volume of the volume adjustment switch, and the user can know the number of track jumps while looking at the scale.
[Brief description of the drawings]
FIG. 1 is a front view of a recording medium playback apparatus of the present invention.
FIG. 2 is a block diagram showing a configuration of the recording medium playback device in FIG. 1;
FIG. 3 is a flowchart showing the operation of the recording medium playback apparatus of the present invention.
FIG. 4 is a diagram showing a track selection screen displayed on the display unit.
FIG. 5 is a diagram showing another track selection screen displayed on the display unit.
[Explanation of symbols]
10 Recording medium playback device 11a Volume control knob 11b UP / DOWN key (forward switch)
12 Operation unit

Claims (4)

In a recording medium reproducing apparatus capable of selecting and reproducing a desired track from a recording medium storing a plurality of tracks,
A first switch for selecting track jump for each track;
A second switch for selecting two or more track jump of a predetermined number of each track, Bei example, said first switch, combined with a switch for selecting a track jump for each track, a switch for switching modes In the recording medium reproducing apparatus, the second switch functions as a switch other than selecting a track jump when the mode is not selectable by switching the mode . 2. The recording medium playback apparatus according to claim 1, wherein the second switch functions as a volume control switch for adjusting a volume during playback in a mode in which a track cannot be selected. By associating the volume scale of the volume control switch with the number of tracks, when the volume control switch is moved by a predetermined scale, the track jumps by the number of associated tracks, and the direction in which the volume control switch is moved 2. The recording medium reproducing apparatus according to claim 1, wherein when the recording medium is moved in the opposite direction, the track is returned by the number of tracks corresponding to the moved scale. 5. The recording medium playback device according to claim 4, wherein the number of tracks associated with one volume scale of the volume control switch can be set by a user.

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