JP2003100065A - Recording medium reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording medium reproducing device that can clearly indicate a relation between an actual search result and indication in the case of executing a job search. SOLUTION: A HEAD switch 22 is depressed at the detection of a head of a desired music on a CD and an END switch 24 is depressed at the detection of the end of the music. After any of the switches is selected, a forward skip switch 18f or a backward skip switch 18g is used to move to a track of a desired music, a PAUSSE switch 18b is depressed and a job dial 20 is operated to implement repetitive reproduction. Then the job dial 20 is operated to move a reproduction frame group by one frame each and to identify the beginning or the tail end frame of the music, and to depress a MEMO switch 26 to store a frame of the detected head position or end position. At the detection of head, the head of the reproduction frame is used for a display identification position of the reproduction frame group and the end of the reproduction frame is used for a display identification position of the reproduction frame group for the detection of the end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in detection position display in a recording medium reproducing apparatus, particularly in a compact disc (CD) or the like, when detecting the beginning or the end of a recorded music piece or the like.

[0002]

2. Description of the Related Art Conventionally, compact discs (CD) and digital versatile discs (D) have been used as recording media.
VD), mini disk (MD), etc. are used. The method of using such a recording medium is not limited to simply viewing and listening. For example, a plurality of recording media may be edited and put together into one recording medium, or a desired song or video may be recorded from different recording media. In some cases, things are extracted and used.
Especially, in the music industry and the broadcasting industry, it is indispensable to connect music and images. When performing such work, it is required to accurately cut out the contents (songs or images) recorded on each recording medium.

For example, a plurality of music pieces are recorded on a music CD or the like with a predetermined blank (non-recording portion) interposed therebetween. Therefore, when detecting the beginning of the song (cueing), it can be performed by temporarily stopping (pausing) at "0 minutes 0 seconds" based on this blank portion. However, the song does not always start at 0 minutes and 0 seconds. The recording medium is composed of multiple frames (0 to 74 per second),
In many cases, the recording signal is written from a position several frames ahead of "0 minute 0 second 0 frame". Therefore, even if the reproduction is started from the paused position, the reproduction of the music does not always start immediately. The time for several frames is several tens of ms, but when listening to music or the like even in such a short time, it is often uncomfortable.

On the other hand, some commercial recording medium reproducing devices (for example, CD players) have a jog dial. The jog dial can move the frame one frame at a time. In a CD player having such a jog dial, as shown in FIG. 3, during the pause, repetitive reproduction is executed for a predetermined number of frames, and during the repetitive execution, the frames are moved forward and backward by the jog dial to accurately reproduce the reproduction start frame. You can search. The repetitive reproduction is executed in a reproduction frame group 100 consisting of a predetermined number of frames before the position (0 minutes, 0 seconds, 0 frames), which is a normal pause position, for example, 10 frames, and the jog dial is shown in FIG. As shown, the playback frame group 100 is moved in frame units.

Therefore, the reproduction frame group can be sequentially moved by the jog dial to accurately find the frame where the music starts. By recording the retrieved cueing frame in a memory or the like and calling the frame when necessary, a good cueing work can be performed. In FIG. 3, as indicated by reference numeral 100a, it is shown that there is a recording signal from "0 minutes 0 seconds 03 frames" and the actual reproduction starts.

[0006]

By the way, a plurality of CDs
When performing an editing operation or the like using, etc., it is sometimes desired to detect the end as well as the beginning of the music. At this time, when the jog search as described above is performed, it is actually
Even if the recording signal of the music piece ends at "74 frames per second" and the reproduction is ended, if the end is detected based on the repeated reproduction, the jog dial must be operated to the position of the next 10 frames after the end of the music. I can't confirm no recording. In other words, although the end position of the song must be displayed as "x minutes x seconds 74 frames", the area after the song ends is displayed as "0 minutes 0 seconds 9 frames", and the searched display Is unnatural and very confusing and easily misrecognized.

The present invention has been made in view of the above problems of the prior art, and an object thereof is a recording medium capable of clearly showing a relation between an actual search result and a display when performing a jog search. It is to provide a reproducing apparatus.

[0008]

To achieve the above object, the present invention provides a pause operation means for repeatedly reproducing a reproduction frame group set by a predetermined number of frames of the recording medium during reproduction of the recording medium. And a display means for displaying the current reproduction position of the recording medium by time and the number of frames, and a jog search means capable of arbitrarily selecting the position of the reproduction frame group. Then, when displaying the paused state of reproduction on the display means, there is provided a changing means for arbitrarily changing the display identification position of the reproduction frame group.

At this time, the change of the display identification position by the changing means can be switched at least when the beginning portion of the recorded contents of the recording medium is displayed and when the ending portion is displayed.

As described above, by arbitrarily changing the display identification position of the reproduction frame group, the actual contents of the search result can be properly displayed on the display means when the search is performed by the jog search means. it can.

Further, when the head portion or the end portion of the recorded contents is selected by the jog search means, it is possible to include an offset means for offsetting the display identification position by a predetermined number of frames with respect to the head portion or the end portion. In this case, it is possible to easily and surely avoid so-called head breakage at the head portion. Further, since the reproduction time can be recognized to be longer by a predetermined amount at the end portion, it is possible to prevent a break or the like due to an overlap with the content to be connected later.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention (hereinafter referred to as embodiments) will be described below with reference to the drawings.

FIG. 1 shows a block diagram of a CD player 10 as a recording medium reproducing apparatus of this embodiment, for example. Since the CD reproducing operation of the CD reproducing section 12 is the same as the conventional one, detailed description thereof will be omitted. In FIG. 1, only the configuration necessary for explaining the present embodiment is shown. The CD reproducing unit 12 processes the data read from the CD with an optical pickup (not shown),
Output from audio output. The control itself of the CD reproducing unit 12 is performed by a microcomputer (hereinafter, referred to as a microcomputer) 14. The microcomputer 14 includes a CPU 14a for overall control, a ROM for storing programs for CD reproduction and other various controls.
14b, a work area for performing various controls, a RAM 14c as a storage unit for temporarily storing data, and the like.

Further, the microcomputer 14 has a display section (display means) for indicating the current reproduction position of the CD by time and the number of frames.
16 are connected. The display unit 16 displays the minute (MIN) 1
6a, second (SEC) 16b, frame (FRAME) 1
6c can be displayed. The minutes 16a, the seconds 16b, and the frame 16c show the relative time from the beginning of the track. Since the maximum recording time of the CD is 74 minutes in the portion of the minute 16a, it suffices if 0 to 74 can be displayed.
Recently, some have been recorded for a longer time, and the display number of the portion of the minute 16a can be appropriately changed. The part of the second 16b is
0 to 59 can be displayed, and the portion of the frame 16c is
Since 75 frames correspond to 1 second, 0 to 74 can be displayed.

An operation unit 18 that is directly operated by the user is also connected to the microcomputer 14. The operation unit 18 has a C
PLAY switch 1 for issuing a playback command to the D playback unit 12
8a, PAUSE switch 18b for pausing playback
(Pause operation means), STOP for completely stopping the CD
Switch 18c, FF switch 18d for fast forward, REW switch 18e for fast rewind, forward skip switch 18f for skipping forward by CD unit, backward skip switch 18g for skipping backward, and pause by operating PAUSE switch 18b A jog dial 20 (jog search means) for shifting the reproduction frame group one frame at a time in the repeated reproduction is arranged.

In addition to the above, the operation unit 18 has a switch, which is a feature of the present embodiment, for switching between the beginning detection and the end detection of the music of the CD, that is, the display identification position of the reproduction frame group is arbitrarily set in the pause state. It has a HEAD switch 22 used at the time of head detection and an END switch 24 used at the time of end detection, which functions as a changing means for changing to.
Further, the MEMO switch 26 for storing the display position (time) of the display unit obtained as a result of the start detection and the end detection,
Jog dial 2 at the beginning or end of the recorded content
When the selection is made by 0, an OFFSET switch 28 as an offset means for arranging the display identification position with respect to the display unit 16 by a predetermined number of frames is arranged with respect to the head portion or the end portion. It should be noted that other switches, dials, etc. for executing various functions are also present on the actual operation unit 18, but illustration and description thereof are omitted.

CD player 1 having the above structure
Operation and display unit 16 at the time of detecting the start and end by 0
Will be described.

First, when head detection is performed, the HEAD switch 22 is pressed to enter the head detection mode. Then, by using the front skip switch 18f or the rear skip switch 18g to move to the track of the desired song and pressing the PAUSE switch 18b and then operating the jog dial 20, the jog dial 20 is moved to the blank position before the desired song starts. , Repeat playback. As mentioned above, P
By the operation of the AUSE switch 18b, as shown on the right side of FIG. 2, repetitive reproduction is started with the 0 minute 0 second 0 frame as a reference, for example, 10 frames before that as the reproduction frame group 30a. In this case, this repeated reproduction is in a silent reproduction state because it is a blank portion between the preceding track and the next track. Therefore,
The jog dial 20 is operated to move the reproduction frame group 30a frame by frame to search for a frame in which a recording signal (sound) is recorded. In the case of FIG. 2, "0 minutes 0 seconds 3 frames"
Is the place where the first recorded signal is included, and when the reproduction frame group 30a is moved to this position, the reproduced sound at the beginning of the music can be confirmed. In the actual confirmation work, the jog dial 20 is passed through 3 frames, and after confirming the start of the music based on the reproduced sound including the recording signals of the 4th frame, the 5th frame, etc., the jog dial 20 is rotated forward and While reversing, "0 minute 0 second 3 frame" which is the start position of the actual recording signal is searched for. After the first frame of the song can be identified, the frame display position at the beginning position detected by pressing the MEMO switch 26, that is, the display of “× minutes × seconds 74 frames” is the cue position, that is, the “cue mark”. Memorize as.

When actually reproducing the target music of the CD, it depends on the specifications of the CD player 10,
For example, with the RECALL switch 32 shown in FIG.
By recalling the stored display position and pressing the PLAY switch 18a, for example, reproduction from 0 minutes 0 seconds 3 frames is started. That is, the reproduction of the song is started without any blank time. In other specifications,
The playback may be started by pressing the PAUSE switch 18b once again, or may be started by pressing the HEAD switch 22 once again.

Next, the case of detecting the end will be described. The END switch 24 is pressed to enter the end detection mode. Next, by using the front skip switch 18f or the rear skip switch 18g to move to the track of the desired song, and pressing the PAUSE switch 18b and then moving the jog dial 20, the position immediately before the desired song ends, Plays repeatedly. In this case, by operating the PAUSE switch 18b, as shown on the left side of FIG. 2, repetitive reproduction is started in the vicinity of 70 frames × minutes × seconds, for example, 10 frames as the reproduction frame group 30b. In this case, since the repeated reproduction is performed in the middle of the desired music (near the end), the sound of a part of the music is output. So, jog dial 2
0 is operated in the same manner as when the head is detected, and the reproduction frame group 30b
Is moved frame by frame until the end of the song, that is, the silent part.

By the way, in the head detection mode (when the reproduction frame group 30a is searched), as shown in the left side of FIG.
Unless the jog dial 20 is rotated to the 9th frame of the blank portion, the repeated reproduction does not become silent. Of course, at this time, the display on the display unit 16 is "0 minutes 0 seconds 9 frames". In other words, even though the song should have ended, the display will appear as if the next song started.

However, in the case of this embodiment, the display identification position of the reproduction frame group is changed by pressing the END switch 24 as shown by reference numeral 30b on the left side of FIG. That is, the head portion (left end in the figure) of the reproduction frame 30a is set as the display identification position (time display position) of the reproduction frame group when the head is detected, but when the end is detected, the reproduction frame 30b is pressed by pressing the END switch 24. The end portion (right end in the figure) is used as the display identification position (time display position) of the reproduction frame group. That is, in reality, the playback frame 3
0b repeats the operation in the blank portion between the desired music and the next music, but by searching the end of the reproduction frame 30b, it is displayed as the end point (x minutes x seconds 74 frames) of the target music. It is displayed on 16. In this way, when the end position of the music can be detected, the MEMO switch 26 is used to store the display position of this portion as the end position of the music.
Press.

As described above, by using the END switch 24, it is possible to display and store the music in a state where the end of the music and the display of the display unit 16 are completely matched.

The storage of the end position can be called and used, for example, when it is desired to accurately know the length of a music piece, or when another music piece is to be connected after the music piece whose end is detected.

In the CD player 10 of this embodiment, when the head or the end is detected by using the jog dial 20, the actual operation position of the jog dial 20 (display unit 16).
Display position) and the reproduction position are intentionally shifted, that is, the display identification position for displaying on the display unit 16 is offset by a predetermined number of frames with respect to the head portion or the end portion.
It has an FFSET switch 28. For example, when the head is detected, the beginning portion of the recording signal is completely detected. However, depending on the response performance of the audio equipment used, if the sound output position and the reproduction operation position are completely the same, the reproduction process will be performed. There may be a break in the song in time. Also, depending on the user's preference, there is a case where a person who prefers a one-tempo delayed start or wants to intentionally delay the start. In such a case, conventionally, after the head is detected, the user intentionally operates the jog dial 20 to return the desired frame.

In the present embodiment, by operating the OFFSET switch 28, the head detection position and the display identification position for display can be automatically moved by the set number. That is, the setting can be changed so that the reproduction actually starts at the third frame, but the reproduction starts at the time when the jog dial 20 is operated up to the second frame (see the reproduction frame group 30c). As a result, even if the user presses the MEMO switch 26 at the just timing to determine the cue mark based on the reproduced sound that is repeatedly reproduced, the position of the cue mark is the actual sound output position. It is attached to two frames that are one frame before the frame. That is, when the cue mark is called and reproduced, the reproduction starts from one frame before, and a margin of one frame occurs. That is, the user can prevent the head cut without performing any operation each time the head is detected.

Similarly, even when the end detection is performed, the detection position can be stored by moving the relationship between the end detection position and the display identification position by a preset offset amount. Can be recognized for a predetermined frame longer, and it is possible to prevent disconnection due to overlap with the content to be joined later.

In the present embodiment, the CD player has been described as an example, but the present invention can be applied to other storage medium reproducing devices such as a DVD player and an MD player, and similar effects can be obtained. .

[0029]

As described above, according to the present invention,
By arbitrarily changing the display identification position of the reproduction frame group, the contents of the actual search result can be appropriately displayed on the display means when the search is performed by the jog search means.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of a CD player according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating an operation of a reproduction frame group of the CD player according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram illustrating an operation of a reproduction frame group of a conventional CD player.

[Explanation of symbols]

10 CD player, 12 CD playback unit, 14 microcomputer, 14a CPU, 14b
ROM, 14c RAM, 16 display section, 18 operation section, 18a PLAY switch, 18b PAUSE switch, 18c STOP switch, 18d FF switch, 18e REW switch, 18f forward skip switch, 18g backward skip switch, 20 jog dial, 22 HEAD switch, 24 END switch, 26 MEMO switch, 28 OFFSET switch, 30a, 30b playback frame group, 32 REC
ALL switch.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kenji Oniki             3-7-3 Nakamachi, Musashino City, Tokyo             ACK Co., Ltd. (72) Inventor Yasunobu Shimizu             3-7-3 Nakamachi, Musashino City, Tokyo             ACK Co., Ltd. F-term (reference) 5D077 AA26 BA01 HC03 HD02                 5D110 AA15 AA27 DA18 DB09

Claims (3)

[Claims] 1. A pause operation means for repeatedly reproducing a reproduction frame group set by a predetermined number of frames of the recording medium during reproduction of the recording medium, and a position of the reproduction frame group can be arbitrarily selected. A recording medium reproducing apparatus comprising: a jog search means, and a display means for displaying the current reproduction position of the recording medium by time and the number of frames, wherein the display means displays a reproduction paused state. ,
A recording medium reproducing apparatus having a changing means for arbitrarily changing a display identification position of a reproduction frame group. 2. The apparatus according to claim 1, wherein the change of the display identification position by the changing means displays at least the head portion of the recorded contents of the recording medium,
A recording medium reproducing device characterized by being switchable between a case where an end portion is displayed and a case where an end portion is displayed. 3. The apparatus according to claim 2, further comprising: when a head portion or an end portion of the recorded content is selected by a jog search means, a display identification position is a predetermined number of frames with respect to the head portion or the end portion. A recording medium reproducing apparatus including an offset means for offsetting by an amount.