JPH05224581A - Optical disk player for language practice - Google Patents

Abstract

PURPOSE:To eliminate the need to pay attention to equipment operation and improve the efficiency of learning by an optical disk player for language practice which reproduces an optical disk for language practice where index numbers for lessons are added by performing short-range repeating operation extremely easily by button operation, etc., and providing a margin time for the button operation. CONSTITUTION:This disk player is equipped with holding means 7 and 9 which, hold the index number of speech data being reproduced delaying by a specific time, and a means which generates a track jump signal for a jump to a destination based upon the index number and supplies it to the driving circuit 2 of an optical pick up 1. Only the data part is repeatedly reproduced only by single- time switch operation within the specific time most suitable for short-section repeating operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc player suitable for use in language practice.

[0002]

2. Description of the Related Art Compact disc (hereinafter referred to as CD)
Is widely used as software for listening to music, karaoke, language learning, music lessons, etc. Among such fields of use, it is considered that the repeat function of the CD player becomes important and is frequently used since it is important to hear repeatedly when the CD is used especially for language learning. In a conventional CD player, a function of searching for a track number recorded on a CD and repeating it (C where a song is recorded
In addition to (for example, one song unit repeat in D), there is one that is provided with a function to repeat and reproduce only a specific section. This specific section repeat reproduction is performed at time A and time B.
Is specified, repeat playback is performed between this time AB. When using this function for language learning, for example,
While listening to the playback content, the user has searched for the portion of the content to be repeated, and then specifies the repeat portion for repeat playback.

[0003]

However, in the case of the repeat by the track number, in the case of the language learning CD,
It becomes a lesson unit repeat, and it is impossible to repeat only the necessary part, and in the section repeat as described above, the operation of specifying the repeat part is troublesome,
There was a problem that I couldn't concentrate on the learning because the learning was interrupted due to the operation or the operation of the device made me nervous during the language practice. Also, during language practice, I usually try to repeat playback just after listening to a difficult sentence or a sentence containing difficult-to-understand pronunciations. Even if a function that allows repeat playback is added from the beginning of a sentence, the problem that the first finished listening sentence cannot be heard if the next sentence playback is started with a slight delay in the repeat operation. was there.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a voice being reproduced by a CD player for reproducing a language practice CD in which an index number is recorded for each sentence. Holding means for holding the index number of the data after delaying for a predetermined time,
By providing a means for generating a track jump signal targeting the index number held in the holding means when the repeat signal is supplied and supplying the track jump signal to the drive circuit of the optical pickup, the index of the sentence being reproduced. The number is stored, and even after the sentence is finished, the index number is held for a certain period of time so that repeat reproduction can be performed.

[0005]

Since the index number of the audio data being reproduced is held by the holding means with a delay of a predetermined time, it remains constant even during the reproduction of a certain sentence, or when the sentence ends and the next sentence starts. Within the time of, the desired repeat playback of the sentence can be performed by searching the index number held in the holding means only by performing a simple repeat operation with a repeat button or the like.

[0006]

FIG. 1 shows an embodiment of the present invention.
In the figure, reference numeral 1 is an optical pickup for reading recorded information while moving in the radial direction of the optical disk D, and the drive circuit 2 moves in the radial direction. A part of the reproduction signal read by the optical pickup 1 is input to the servo circuit 3 to supply the servo signal to the drive circuit 2, and the audio data, time code, index code, etc. are supplied to the signal demodulation circuit 4. Will be. The audio data demodulated by the signal demodulation circuit 4 is subjected to signal processing by the digital signal processing circuit 5, and D /
It is supplied to the audio signal reproducing circuit via the A converter 6 and output as an analog audio signal.

The optical disc player of the present invention obtains useful features for language practice by the circuits of symbols 7 to 10 described below. That is, the disc D
Is language practice software for, for example, English lessons, and an index number that divides the recorded data content in a short period (for example, every sentence of English sentence) other than the track number is recorded as a control signal. Reference numeral 7 is a memory (RAM) for extracting and storing the index number from the signal supplied to the signal demodulation circuit 4, that is, the signal currently being reproduced. Writing and reading of data are controlled under the control of the control circuit 8. Has been done.
Reference numeral 9 is a latch circuit for latching the data (index number) read from the memory 7 by a control signal from the control circuit 8 for a predetermined time. The latched data is supplied to the jump signal generating circuit 10 for repeat reproduction. It is used as the target position. S ₁ is a repeat operation signal generated when the repeat operation button is pressed, and S ₂ is a mode selection signal sent from the mode selection switch for selecting whether the repeat operation is one-time repeat or continuous repeat. Yes, these signals S ₁ and S ₂ are supplied to the control circuit 8.

The operation of this circuit will be described with reference to the case where an English learning disk is used. Disk D has
For example, as shown in FIG. 2A, English conversation for lessons is recorded, and an index number (... n, n + 1, n +) is used as a control signal for each voice data of one sentence.
2) is recorded as a code signal in the track number or the like. Therefore, in the signal supplied from the optical pickup 1 to the signal demodulation circuit 4, along with the signal corresponding to the English conversation voice data, the index code signals C _n , C _{n + 1} , C _n as shown in FIG. ₊₂ ... will be included. At the same time when this index code signal is detected, its index number is stored in the memory 7, but the index number read from the memory 7 is latched in the latch circuit 9 after a fixed time (t) under the control of the control circuit 8. To be done. That is, the timing of the index number held in the memory 7 and the latch circuit 9 is shown in FIG.
As shown in (c) and (d), they are shifted by t time.

Now, the English conversation sentence shown in FIG. 2A (in the figure,
~)), And if the learner wants to repeat the sentence when he finishes listening to the sentence "Is this table ..." Just press the repeat button. Then, the repeat signal S ₁ is supplied to the control circuit 8. The control circuit 8 transmits the input of the repeat signal S ₁ to the jump signal generation circuit 10, and the jump signal generation circuit drives the signal for jumping to the track in which the index number held in the latch circuit 9 is recorded. Supply to circuit 2.

By the way, usually, it takes some time from the completion of listening to a sentence to the judgment of whether or not to repeat the reproduction and the pressing of the repeat button. Here, the learner's button operation is T ₈ It should be done by the time. That is, since the index number in the latch circuit 9 to the time T ₈ (n + 2) is held, the optical pickup 1 by the drive circuit 2 when the repeat operation is performed up to this point index number (n +
2), and repeat playback from that, that is, (n
The second sentence having an index number of +2) is repeatedly played. As described above, the target point of the track jump in the case of performing the repeat operation corresponds to the data held in the latch circuit 9 which is delayed from the data of the memory 7 by t time, so that the repeat is performed between T _{2 and} T _{4 in the} figure. the statement by performing the operation, the statement if between T ₄ through T ₆ point, T ₆ through T ₈
If it is between the time points, the first sentence will be repeatedly reproduced.

As described above, the control circuit 8 controls the memory 7 to send the index number to the latch circuit 9 with a delay time of t hours, whereby the reproduction of the next sentence is started and the next index number is started. Even if is stored in the memory 7, the desired sentence, that is, the previous sentence can be repeatedly reproduced within t hours. That is, by appropriately setting the time t (normally about 0.2 to 0.5 seconds), it is possible to cover the delay in button operation.

In this repeat reproduction operation, it is possible to select a repeat only once or a continuous repeat by mode switching. That is, when the repeat mode is selected once by the mode signal S ₂ from the mode changeover switch, the next sentence is reproduced as it is after the above-described repeat operation, but in the case of the continuous repeat mode, Repeatedly playing the first sentence as in the example above,
At the time when the index number (n + 3) of the sentence is detected, the jump signal generation circuit 10 again supplies the track jump signal to the drive circuit 2 under the control of the control circuit 8, and the repeat operation is repeated.

In this way, the optical disc player for language practice of the present invention can repeat and reproduce a desired sentence with only one button operation, so that the button operation can be further performed without any trouble in operating the device during learning. Since it is possible to repeat reproduction of a desired sentence in response to a slight delay of, the learning efficiency can be greatly improved.

Since the operation is simple, it is also useful as a portable disc player as shown in FIG. In this figure, 20 is a portable disc player main body, 21 is a repeat operation button attached in the middle of the cord 23 of the earphone 22, and 24 is a repeat mode changeover switch. By thus attaching the repeat operation button 21 to the earphone cord, the repeat operation can be performed without touching the main body, and the repeat operation can be easily performed. In addition, the repeat operation button is also used as the temporary stop button, so that the operation switch section can be simplified. When playing a CD without an index number, the above repeat operation is
It will be based on the track number, for example, it will be a repeat in lesson units.

[0015]

As described above, the optical disc player for language practice of the present invention can very easily perform a repeat operation in a short range by operating a button, and further, a sentence for which repeat reproduction is desired. Even if you enter the next sentence after the end of the above, there is a margin for button operation, and you do not have to panic to operate repeat button operation, so you do not have to be nervous about device operation. , It is possible to minimize the trouble of the learner to operate the device and improve the learning efficiency.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a timing of holding an index number.

FIG. 3 is a perspective view of a portable disc player according to the present invention.

[Explanation of symbols]

1 Optical pickup 2 Drive circuit 7 Memory 8 Control circuit 9 Latch circuit 10 Jump signal generation circuit S ₁ Repeat signal S ₂ Mode signal

Claims (1)

[Claims] 1. An optical disc player for reproducing an optical disc, in particular, an optical disc player for language practice for reproducing an optical disc for language practice to which an index number for lesson is added, the index number of audio data being reproduced. Holding means for delaying and holding for a predetermined time, and means for generating a track jump signal targeting the index number held in the holding means when a repeat signal is supplied and supplying the track jump signal to the drive circuit of the optical pickup. Is provided so that the repeat operation of the audio data part in the index section unit can be repeatedly played between the time when a certain time has elapsed after the start of the reproduction of the audio data part and the time when a certain time has elapsed after the end of the reproduction. An optical disc player for language practice.