JPH01175380A - Reproducing device - Google Patents

Abstract

PURPOSE:To improve operability when a medium on which plural voice sequences are recorded is reproduced by controlling a reproducing means so as to make access for an area where the voice sequence is recorded when the start of the reproduction is instructed. CONSTITUTION:When the start of the voice sequence reproduction is instructed, a head 3 is controlled so as to make access for the area where the voice sequence is recorded when an area for which the head 3 makes access is not the voice sequence. Next, when information which should be reproduced is detected to be the voice sequence, the head 3 is moved so as to reproduce the information of a first track among tracks where the voice information of that sequence is recorded. The voice data is fetched in a memory 17 and simultaneously to that, image information corresponding to the voice data is displayed on a monitor 15. Then, the voice signal stored in the memory 17 is read by a memory controller 24 and reproduced from a speaker 21. Thus, a user can execute the reproduction with a simple operation and the operability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a reproducing device, and particularly to a reproducing device for reproducing audio signals and image signals.

[Conventional technology]

The electronic still video conference standardized the image, audio, and data formats recorded on video floppies. In the format standardized by the Electronic Still Video Conference, it is specified that one continuous sound and the corresponding image may be recorded in a mixed manner at different positions on the medium.

Therefore, a device that plays back from a medium recorded with audio signals and image signals mixed in different areas, such as shown in such a format, temporarily stores the audio signal in the device's internal memory and plays it back as audible sound. At the same time,
2. Description of the Related Art A device is known that searches a medium for an image to be paired with the audio signal and displays the image on a monitor.

[Problem to be solved by the invention]

However, with the above-mentioned device, when no audio signal is recorded in the area that the playback head is accessing,
When attempting to play back an audio signal, before issuing an instruction to start playback, first move the playback head to manually locate the area where the audio signal is recorded, and then issue an instruction to start playback. There was a problem that the operation was very troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to provide a playback device that solves these problems and improves operability.

[Means for solving problems]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a playback device that plays back a medium in which a plurality of audio sequences each consisting of a series of audio signals and image signals recorded in different areas are recorded. Reproducing means for reproducing each region of the medium; means for instructing to start reproducing the audio sequence; and when an instruction from the instructing means is given and the region being accessed by the reproducing means is not an audio sequence; , means for controlling said playback means to access an area in which an audio sequence is recorded.

[For production]

In the above configuration, when the control means instructs the instructing means to start reproduction, the reproducing means is controlled to access the area in which the audio sequence is recorded.

〔Example〕

FIG. 4 is a block diagram of an embodiment of the present invention, where I is a magnetic disk, 2 is a DC motor for rotating the magnetic disk l at a constant speed, 3 is a magnetic head, and 4 is a motor for moving the magnetic head 3. A head moving mechanism, 5 a head drive motor for driving the head movement mechanism 4, 6 a motor driver for driving the head drive motor 5, 7 a magnetic head 3 accessing the innermost track on the magnetic disk. The innermost track detection SW, S, which is turned on when
A PG pulse generator including a G coil, 9 a DC motor driver for driving the DC motor 2, and 10 a DC motor driver to which an output signal from the PG pulse generator is input and to rotate the magnetic disk at a constant speed. 11 is a reproducing amplifier for amplifying the output signal from the magnetic head 3; 12 is an FM demodulating circuit into which the signal from the reproducing amplifier is input; 13 is an FM demodulating circuit 12
This is a video signal processing circuit into which signals from the following signals are input, and is connected to the video mute circuit 14. The video mute circuit 14 is a circuit whose mute operation is controlled by a system controller 28, which will be described later.
The output to 5 is limited. Reference numeral 16 denotes an A/D conversion circuit to which the output of the FM demodulation circuit is input, and a clock signal is input from the oscillation circuit 26 to the A/D conversion circuit. Reference numeral 17 denotes a memory, into which the signal output from the A/D conversion circuit 16 is input, and the address of the memory is controlled by a signal from the address generation circuit 24. This memory has a function of time-expanding the time-base compressed audio signal. D/A conversion circuit 1
8 is a circuit for digital-to-analog conversion of the output signal from the memory 17, and this output is connected to an audio signal processing circuit 19 that performs processing such as noise reduction of the audio signal. The output of the audio signal processing circuit 19 is connected to an audio mute circuit 20, which is a circuit block whose mute is controlled by a system controller 28, which will be described later, and whose output is connected to a speaker 21. Reference numeral 22 receives the output signal from the FM demodulation circuit 12, and also receives the timing generation circuit 2.
This is an information signal demodulation circuit to which the signal from No. 5 is input, and demodulates the control information signal for reproducing the audio recorded on the audio signal recording track. This demodulated data signal is connected to a system controller 28, which will be described later, and a portion of the demodulated data is also input to a timing generation circuit. Reference numeral 23 denotes a reproduction signal discrimination circuit to which the output signal of the FM modulation circuit 12 is input, and this discrimination circuit discriminates whether the signal is a reproduction signal, a video, or something else, and inputs this output to the system controller 28. Reference numeral 24 denotes a memory controller that controls the memory 17 for reading and writing audio, and this is a block that includes circuits that control reading and writing of the memory 17 and control memory addresses. Reference numeral 25 denotes a timing generation circuit, into which the PG pulse from the PG pulse oscillator and the output signal from the information signal demodulation circuit are input, and outputs a timing signal to the information signal demodulation circuit 22 and the memory controller 24.

26 is the A/D conversion circuit 16 and the memory controller 1
an oscillation circuit that generates a signal serving as a reference clock of 7; 27;
is the D/A conversion circuit 18 and the memory controller 17
This is an oscillation circuit that generates a signal that serves as the reference clock for the

28 is a system controller that controls the entire system; 29 is a RAM that stores a program for controlling the system controller; a ROM 130 that is read and written by the system controller 28; SWI is up for instructing the movement of the magnetic head 3 to the inner track.
SW and SW2 are down SWs for instructing movement of the magnetic head 3 to the outer track. SW3 is the audio playback mode 0N10FF for setting the audio playback mode.
It's a switch.

SW4 is a search up switch for advancing the audio sequence to be reproduced to the next one, and SW5 is a search down switch for returning the audio sequence to be reproduced to the beginning of the current sequence or to the previous sequence. SW6 is a start switch that instructs to start audio reproduction, and SW7 is a stop switch that instructs to stop audio reproduction. SW
Reference numeral 8 denotes an l sequence mode setting switch for switching between reproducing the entire floppy disk or reproducing l sequences.

Reference numeral 31 denotes a magnetic disk detection mechanism composed of a phototransistor and a light emitting diode, and is used to detect whether or not there is a magnetic disk between the phototransistor and the light emitting diode.This output is sent to the system controller 28.
It is connected to the. Reference numeral 32 denotes an envelope detection circuit to which the output signal from the reproduction amplifier 11 is input, and an information signal indicating whether the track is an empty track or a recorded track is connected to the system controller 28 based on the detection result of the reproduction envelope. Next, the operation of the embodiment will be explained. First, the number of tracks formed on the magnetic disk is 50, and the track formed on the outermost circumference of the magnetic disk is defined as the first track, and the track formed on the innermost circumference is defined as 50 tracks. Also, the place where the magnetic head moves to the inner circumference side of the magnetic disk is track uP, and the place where it moves to the outer circumference side is track down.
shall be.

Next, the audio recording format will be briefly explained. In this format, the recording positions of the audio signal and the image signal are not defined, and both are mixed at random. This example is shown in FIG. 6(a), which will be described later. FIG. 5(a) shows one of the audio tracks recorded on a track formed on a magnetic disk. The audio track is divided into four sectors: Sl, S2, . S3. It is indicated as S4.

Further, FIG. 5(b) shows an example of a sector format. A start flag, that is, a start signal for this audio sector, is recorded at the start position of one sector, and then the time axis compression ratio of the audio signal, the image signal track address corresponding to the audio signal, and the audio signal are recorded as control codes. When recording continuously over multiple tracks, the track address where the audio started and the next track address (track address where the audio signal is recorded, etc.) are recorded as a control code for audio signal track playback. .

Furthermore, in the description of this embodiment, an audio sequence refers to a series of audio signals recorded on a medium and an image signal corresponding to the audio signals, and a signal corresponding to an audio sequence refers to a series of audio signals recorded on a medium and an image signal that corresponds to the audio signals. It is a signal that indicates

Next, the operation of the embodiment configured as described above will be explained using a flowchart of the system controller 28. FIGS. 1 to 3 are diagrams showing such flowcharts.

First, the creation of a track information table used during reproduction will be explained using FIG. When the magnetic disk 2 (hereinafter also referred to as video floppy) is inserted into the device, the RA
The area for storing track information of M30 and the sequence counter (described later) are cleared (SIOI), and the head 3
The first track of the video floppy is accessed (S102).

If the accessed track is a video track, whether it is a frame type or a field type, or if it is an audio track, the information possessed by each track, such as the first track number of the sequence and the corresponding video track number, is retrieved by the information signal demodulation circuit. S103
), the reproduced data is stored in the table in the RAM 30 corresponding to each piece of information (S104). Then, the currently accessed track number is checked (S105), and the above operation is repeated for all tracks on the video floppy (3103-5105, 5106).

When the creation of the track information table for the currently installed video floppy is completed, the track information table determines whether the information recorded on the first track to be played back, for example, the outermost track of the video floppy in this embodiment, is an audio sequence. (that is, whether it is an audio signal or an image that corresponds to an audio signal) or an image that does not correspond to an audio signal (5107), and if it is an audio sequence, the first track of the audio sequence that includes the track is Move the head 3 to reproduce the track and store it in the memory 17 (5108), then move the head 3 to the track where the image signal corresponding to this audio signal is recorded and reproduce the image signal. and displays it on the monitor 15 (S109). If the information recorded on the track to be reproduced first is an image signal that does not correspond to an audio signal, only this image signal is displayed and the mute circuit 20 is controlled to mute the audio (Sl lo). In this state, wait for either the start switch SW6 or the search up/down switch SW4.5 to be turned on at 5ill. When the start switch SW6 is pressed in step 5111, the process advances to playback routine 5112.
Further, when the search up/down SW is pressed, the flow branches to a search routine 5113.

Next, first, the playback routine 5112 is shown in FIG. 2(a).
.

This will be explained using (b). In the playback routine, it is first determined whether the image currently displayed on the monitor 15 is an image that corresponds to the audio sequence (S201).
). If it supports audio sequences, the above 81
Since audio data is already stored in the audio memory 17 in 08, the memory controller 24 is driven,
The audio data stored in the memory 17 is read out, and audio output from the speaker 21 is immediately started (S204). If the audio sequence does not correspond, the audio sequence to be played next, for example, the audio signal recorded on the outermost track of the floppy disk or the video signal of the floppy disk, if there is a corresponding audio signal, and The video signal recorded on the outermost track and its first track number are checked using the track information table created on the RAM 30, the audio data from this track is stored in the memory 17 (5202), and the image corresponding to this audio is stored. to be displayed on monitor 15 (5203), and memory 1
7, the mute of the mute circuit 20 is released, and audio output is started (S204). After starting audio output, switch SW4. SW5. SW7
If it is not turned on, the audio data will be stored one after another in the memory 17 until this audio sequence ends.
08), the corresponding image is displayed (5209). If it is detected in 5205 that the stop switch SW7 has been turned on, the flow branches from 5230 to 5223, stops the audio output (5223), ends the playback, and returns to 5ill in FIG. Also search up/d
When it is detected that the own switch SW4.degree.

Further, during playback of one audio sequence, if the audio data of the last track of the audio tracks constituting the sequence has been loaded into the memory 17, the process returns to 5207.
The flow branches from 5210 to 5210, and waits until the reading of the audio data currently stored in the memory 17 is completed (5210), and then increments the sequence counter so that the audio sequence can be played back (S211).
. Next, it is determined whether or not the reproduction of all the tracks in which the audio signal and the video signal are paired on the video floppy has been completed (5212), and if the reproduction has been completed, the process returns to the first place to be reproduced and waits. (S212, 219-2
21°222). In addition, 5220.5221 is 5202.
This step is similar to step 5203, and step 5222 is a step of moving the head to the outermost image track on the video floppy. When it is determined in step 5212 that the audio has not been completed, the next information to be reproduced, that is, the audio recorded on the outermost side and on the inner side of the track in which the already reproduced information is recorded. In order to play either a sequence or an image that does not correspond to an audio sequence, it is first determined whether an audio sequence exists (S213). If it is detected in 5213 that the next information to be played is an audio sequence, 5214, 5 corresponds to the above-mentioned 3202.5203.
215 and 5216 are executed.

Further, if it is detected in 5213 that the information to be reproduced next is not an audio sequence, the above-mentioned 5110
Similar steps are performed.

When it is detected in 5213 that the information to be reproduced next is an audio sequence, the head 3 is moved so that the information of the first track among the tracks in which the audio information of that sequence is recorded is reproduced. , the audio data is imported into the memory 17 (S215), and then 3216
is executed, and the corresponding image information is displayed on the monitor 15.

As a result, the image corresponding to the audio sequence to be reproduced next can be visually recognized just by looking at the monitor 15, which is very convenient to use.

Next, in 8217, it is determined whether the mode is one sequence mode, that is, whether it is a mode in which all the audio sequences on the video floppy are played back, or a one sequence mode in which playback is stopped after playing one audio sequence. However, if the mode is 1 sequence mode, the process proceeds to B in FIG. 2(a) and branches to 5ill in FIG.

Therefore, when the 1-sequence mode is set, the audio reproduction is temporarily stopped after the audio signal of one sequence and the video signal corresponding to the audio signal are reproduced. If the 1 sequence mode is not set, the flow branches to 5204 shown in FIG.
The audio signal stored in 7 is read out by the memory controller 24 and reproduced from the speaker 21, and the audio signal stored in 8
When the flow below 204 is executed and all the audio sequences on the video floppy are played, the flow is 5.
The process branches from 212 to 5219, and the operations described above are performed.

In this embodiment, after all the audio sequences on the video floppy are played back, the image signal recorded on the outermost track on the floppy, or the first audio signal of the audio sequence including the audio signal recorded on the outermost track An image signal corresponding to the track on which the image is recorded is reproduced as a visible image on the monitor 15.

Therefore, if it is desired to observe the image signal and reproduce it again, all the audio sequences on the floppy disk will be reproduced by simply turning on the start switch SW6.

Also, when the start switch SW6 is turned on, the head 3
If the information recorded in the track being accessed does not correspond to the audio sequence, an adjacent audio sequence will be automatically searched for and played back by executing steps 5202 and 5203 described above.

Next, search up/do in 5ill shown in Figure 1.
The search routine Sl 13 executed when the wn switch is turned on will be described with reference to FIG.

In this routine, it is first determined whether the search up switch SW4 and the search down switch SW5 are turned on (S301).

If the search up is instructed here, it is necessary to determine whether or not the user is currently in the audio sequence, that is, the audio information is being played back (5302). If you are playing information, increment the sequence counter (
S303). Further, in 5302, if the information being visually reproduced by the monitor 15 is an image signal that does not correspond to an audio signal, the sequence counter indicates the audio sequence to be reproduced next, so 8303 is not executed.

Then, prepare to play the next sequence to be played (8
306-308). Also, 5306 to 308 are 5214
This is the same step as 5216. Also, if the instruction is search down, the flow branches from 5301 to 5304, checks whether the current position is in the middle of the audio sequence, and if it is not in the middle, that is, the information being played at that point is If the image signal corresponds to the audio signal recorded on the first track of the audio sequence or the image signal does not correspond to the audio sequence, the sequence counter is decremented to play the previous sequence (530).
5) When in the middle, prepare to play the audio sequence while keeping the sequence counter as it is in order to play the sequence that is currently being played from the beginning again (
3306-308).

Here, from 5lll in Fig. 1 to search switch SW4.
゜When the flowchart shown in FIG. 3 is executed by turning on SW5, only the image is displayed on the monitor 15, and the audio playback is stopped. When this search routine is executed, Standby, ready to play the audio sequence.

That is, the audio data to be reproduced next is stored in the audio memory 17, and an image corresponding to the audio data is displayed. On the other hand, in 8205 of the flow shown in FIG. 2(a), the search SW, SW4. If it is detected that SW5 is turned on, this is an instruction to search while audio is being output, so the audio output is temporarily stopped in step 5224, and then the search subroutine shown in FIG. 3 is executed. (S2
25) is executed, but when preparations for audio sequence playback are made by executing the subroutine for this search,
Since the flow branches to 5204, audio output starts immediately. Therefore, when the search routine is executed,
Regardless of whether information constituting the audio sequence is currently being reproduced or an image signal that does not correspond to the audio sequence is being reproduced, the beginning of the audio sequence is always reached.

Next, FIG. 7 is a flowchart showing a modification of the search routine shown in FIG. 3.

In the search routine described below, unlike the flow shown in Fig. 3, when the search down switch is turned on, the sequence counter is decremented regardless of whether or not audio is being played. speaker 2
Control is performed to search for the beginning of the audio sequence of the previous sequence, regardless of whether or not there is audio being played back from the beginning. Such a search routine will be explained using FIG.

Search switch SW4. When SW5 is pressed, this search routine is entered, and it is determined whether a search up or down instruction has been issued (S401), and then the sequence counter is decremented (S402).

This causes the sequence counter to indicate the sequence immediately before the sequence currently being played.

After that, use this sequence number to refer to the table and search for the first track number from the table. 5405
), the head 3 is moved to the track, the audio data is played back, and the audio data is stored in the memory 17.S
406) and display the corresponding image (S407).

By configuring the flow as described above, the search
When the n-switch SW5 is turned on, the previous audio sequence is controlled to be searched regardless of whether audio is being reproduced from the speaker 21 or not.

In the flowchart explained above, FIG. 2(b)
When the 1-sequence mode is selected as explained in , if there is a next audio sequence after playing one audio sequence, the image information corresponding to the first audio of the next audio sequence is displayed on the monitor 15. will be visibly played.

Therefore, the user can visually check the image information corresponding to the next audio sequence in advance.

Next, regarding an embodiment in which after one audio sequence is played back, the image information corresponding to the last audio signal of the sequence continues to be visually played back on the monitor 15, so that it can be used without any discomfort. Figure 8(a),
This will be explained using (b).

In FIG. 8, S211 in FIG. 2(a) and S211 in FIG.
The steps S21 to S5225 shown in b) are replaced as shown. Furthermore, step 32 in FIG. 2(a)
01-8204 is transformed as shown in FIG. 8(a).

The operation will be explained below.

In the embodiment shown in FIG. 8(b), steps 5213 to 5215 are executed after 5210 to detect the presence or absence of the next audio sequence 2 (5213).
14. Execute 5215 and save the audio data to memory 17.
5217), and if it is not l-sequence mode, the sequence counter is incremented for the first time (5211), and if it is l-sequence mode, the second
The process moves to step B in FIG. 5A and returns to step 5111. After incrementing the sequence counter in 5211, it is determined from the value of the sequence counter whether the entire sequence has been completed or not (5212). If the entire sequence has not been completed, in 5215 the audio data taken into the memory 17 is The head is moved to the track where the corresponding image information is recorded, and the monitor 15
The image information is visually reproduced (S216).

If all sequences have been completed, steps 8219 to 5221 are executed, and the same operations as described above are performed.

Therefore, the steps up to the start of audio reproduction in FIG. 2(a) are slightly changed.

That is, it is checked whether the currently displayed screen is an image corresponding to the next audio to be played (S251), and if the final image of the previous audio sequence is being displayed, that image is By displaying (S203), audio output is started (3204).

In the embodiment described above, 5215 is followed by 521
7 is running, so if it is l sequence mode, 1
When two audio sequences are reproduced, image information corresponding to the last audio is displayed on the monitor 15 after the audio signal has been reproduced. Therefore, the image information recorded on the medium can be reproduced satisfactorily without causing any discomfort to the user.

Next 5103. The audio track numbers input from the table by executing 3104 and 5105 will be explained. In this explanation, the priority is basically recorded on the outer edge of the video floppy.
Tables read out in step c are prepared in accordance with the following playback modes.

■Audio sequence priority mode (first mode) Each audio sequence is played from the outer circumference of the first track position.

■ Video track priority audio sequence playback mode (second
mode) The first track of each audio sequence is played from the outer circumference of the corresponding video track position.

Regarding this first mode and second mode, Fig. 6(a) to (
This will be explained in detail using c).

Section 6j5(a) determines whether the signal recorded on each track is a video signal or an audio signal, and if it is a video signal, which track's audio signal it corresponds to, and if it is an audio signal, which audio signal it corresponds to. FIG. 3 is a diagram showing whether or not the sequence is compatible.

In the column labeled A/V in FIG. 6(a), if the signal recorded on each track is a video signal, the uppercase letter V1 indicates an audio signal, and if the signal is a lowercase letter, the alphabet is shown. . Note that the lowercase alphabet starts with "a" and continues with "b" and "C", and if the audio sequence is the same, the same type of alphabet is assigned. Further, the numbers attached to the alphabets indicate the playback order within the audio sequence. The column indicated as audio sequence indicates which audio signal corresponds to the track in which the video signal is recorded, and the column indicated as sequence l indicates the video corresponding to the audio track indicated as "a". If it is a track, the same reference numerals as those shown in the A/V column are given.

Therefore, to give an example, 2 tracks have a video signal recorded thereon, and the video signal is the audio track designated as "b1", i.e., according to the figure, 13) the video signal corresponding to the audio signal recorded on the rack. It is.

The above-mentioned 81 is used for playing back a video floppy on which each track is recorded as shown in FIG. 6(a).
The table referenced in 2008 and others is shown in FIG. 6(b). 6th
In the track number column of FIG. 2B, the tracks to be accessed by the head 11 are sequentially written from left to right according to each of the aforementioned modes. Also, Fig. 6(C) shows Fig. 6(b).
It shows the order in which the head moves in order to reproduce the video signal when reproducing is performed while referring to each table in . For example, in the first mode, the 11th track is played first in the playback order. Since this track is the track on which the audio signal is recorded, the head
1) After playing the rack and writing the audio to the memory 17, the video track corresponding to the 11th track, that is, the 4th
The track is played back, and then the audio written in the audio memory 17 is read out and played back at the same time as the video on the fourth track, and the head 11 moves to the 12th track when the remaining space in the memory 17 becomes low. Then, the audio of the twelfth track is played back and written to the memory 17, and the seventh track records a video signal corresponding to the audio signal of the twelfth track.
The head moves to the track, the same operation as described above is performed, and the sequence continues as shown in the figure below (In addition, in the second mode, if there are multiple audio sequences, the head will move to the first track of each of them). The sequence related to the outermost video of each track in which video is recorded is played first.Explaining with reference to FIG.
”, the track in which the video corresponding to the first track of the audio sequence is recorded is the fourth track, respectively.
truck.

This is the second track. Therefore, in the case of the second mode, “a
” are played in sequence, then “
The audio sequences shown as "b" will be played in order.

Above is the first part. In the second mode, video signals that do not correspond to audio signals are skipped without being played back.

Therefore, during playback, the video is always played back on the monitor and the sound is played back from the speakers at the same time, making it very convenient to use.

Next, the first. A mode in which video signals skipped in the second mode can be sequentially reproduced will be described.

First, the third mode is a mode in which, in addition to the operation of the first mode, when the head is moved from the outer circumferential side, tracks with no corresponding audio signals are given priority for reproduction, and then the first mode is executed. be.

An example of such a mode will be explained.

First, in this case, video signals without corresponding audio signals, that is, the first track and the third track, are reproduced from the outer circumferential side. Here, the second track is skipped because it corresponds to the second audio sequence to be played in the first mode. Next, each track belonging to a series of audio sequences including the video signal recorded on the fourth track is played back, and when this audio sequence is finished, a series of audio sequences including the video signal on the second track is played. Ru.

As mentioned above, the third mode is executed,
The fourth mode corresponds to the second mode and is similar, so the explanation will be omitted.

That is, in the fourth mode, the track number of the video signal corresponding to the first track of each audio sequence is compared with the number of the track for which there is no corresponding audio signal, and the tracks with the lowest number are played back. .

In addition, in the third mode and the fourth mode, the head movement is automatically prohibited at the timing shown in the figure (STOP mark ""), and the search up switch SW4 and the search do W are turned off. This state is maintained until the n switch SW5 or the start switch SW6 is operated, but the fifth mode and the sixth mode do not prohibit the movement of the head in the third mode and the fourth mode. In other words, this is a mode in which the access position of the head is always automatically updated at a set interval time.

Also number 1. In the second mode, the movement of the head is automatically prohibited at the timing marked with "" shown in the figure.
This is the case when sequence mode is set.

As explained above, according to this embodiment, each track information is searched and managed in advance and executed in a predetermined mode, so that audio signals and video signals are mixed and recorded. Even if the medium is medium, the whole can be reproduced satisfactorily.

Furthermore, in this embodiment, an example using a disk-shaped recording medium has been described, but the medium is not limited to this.
It may be in the form of a tape or a card. Further, depending on the case, a solid state memory such as a semiconductor memory may be used.

Furthermore, in this embodiment, a start switch is provided and a track information table is provided, so that the area being accessed by the playback head can be located at any position, whether within or outside the area in which information constituting the audio sequence is recorded. Audio can be output by simply turning on the start SW, and there is no need to search for an audio sequence as in the conventional case.

Furthermore, according to this embodiment, depending on whether or not the sequence mode is set, only one of the plurality of audio sequences recorded on the medium is played back, or all the audio sequences are played back in a predetermined manner. You can switch between automatic playback and playback in order, making it extremely easy to use.

Furthermore, in such one sequence mode, an easy-to-use reproduction device can be provided by reproducing an image corresponding to an already reproduced audio signal as an image to be reproduced on a monitor at a stage when audio reproduction is stopped.

In addition, in such one sequence mode, when the audio playback stops, the image played back on the monitor can be changed to the next one (
By using an image that corresponds to the first sound of the sound sequence, a playback device that is easier to use can be provided.

Further, according to this embodiment, search up/do
w n switch SW4. By providing the SW 5, even when a plurality of audio sequences or images that do not correspond to audio coexist on the medium, it becomes possible to easily find and reproduce the beginning of the required audio sequence.

〔Effect of the invention〕

As explained above, according to the present invention, when reproducing an audio signal from a medium in which an audio sequence consisting of a series of audio signals and image signals is recorded, the user performs the reproduction with a simple operation. This has the effect of improving operability.

[Brief explanation of the drawing]

1, 2(a), (b), and 3 are flowcharts showing the operation of an apparatus according to an embodiment of the present invention, and FIG. 4 is a block diagram showing the configuration of an embodiment of the present invention. FIGS. 5(a) and (b) are diagrams showing the recording format in the apparatus of the embodiment, FIGS. 6(a), (b), and (C) are diagrams explaining the playback procedure, and FIG. Flowchart showing a modification of the figure, No. 8
FIGS. 2(a) and 2(b) are flowcharts showing a modification of FIG. 2(b). l・・・・・・・・・・・・Magnetic disk, 19
・・・・・・・・・・・・Audio signal processing circuit 28 ・
・・・・・・・・・System controller, SWI・
・・・・・・・・・・・・・・・UP 5WSW2...
・・・・・・・・・・・・DOWN 5WSW4...
...Search up 5WSW5...
・・・・・・Search down 5WSW6・・・・・・
......Start SW' also 3 Figure (a) Tiger 727 Oron nt (I) Separator 2 Oron H one restart Flow No. 671) 6th section (Run No. (1) A (C) J I 5TOP Cause 8 (b) (Szto Kau)

Claims (1)

[Scope of Claims] A playback device that plays back from a medium in which a plurality of audio sequences each consisting of a series of audio signals and image signals recorded in different areas are recorded, each area of the medium having the following features: reproducing means for reproducing the audio sequence; means for instructing to start reproducing the audio sequence; and when the instruction from the instructing means is given and the area being accessed by the reproducing means is not an audio sequence, the audio sequence is A reproducing apparatus comprising: means for controlling the reproducing means to access a recorded area.