JP3327683B2 - Reproduction apparatus and control method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a still image and two sound systems.
Reproducing apparatus for reproducing a recording medium on which voice and voice are recorded, and its control
About your method .

[0002]

2. Description of the Related Art As a method of synchronizing a still image and a sound with a reproducing apparatus for simultaneously outputting a still image and a sound, a sector interleaving method used in CD-I is known. This is equivalent to one sector (about 2
In this method, data is physically managed in units of (K bytes), and sectors of image data and sectors of audio data are alternately arranged.

[0003] Also, as a method of easily synchronizing a still image and audio during authoring, while listening to audio,
There is a method of tuning the output timing of the image data from the memory by cut and try.

[0004]

However, in a conventional reproducing apparatus that outputs a still image and a sound simultaneously, generally,
Since the output timing of the still image and the sound is not managed, there is a deviation in the output timing, and this gives the viewer a great deal of discomfort.

In order to synchronize the image and the sound at the time of authoring, there is no other way but to cut and try as described above. If the reproduction interval of the still image is changed, the cut and try is redone and the editing work is performed. It required a lot of man-hours.

Furthermore, when there are two systems of audio output, in the conventional example, the volume of each system audio must be manually adjusted, which is very difficult for ordinary viewers to handle. Therefore, when previewing as a serial program, the operation has been extremely difficult.

An object of the present invention is to provide a reproducing apparatus and a control method thereof which do not cause such inconvenience.

[0008]

SUMMARY OF THE INVENTION A reproducing apparatus according to the present invention is a reproducing apparatus for reproducing a still image and two types of sound , and controls so as to output a first type of sound in accordance with the still image. Then , the output of the audio of the first system is started.
Automatically lowers the output level of the audio of the second system.
And wherein the gel.

Further, the control method according to the present invention provides a method for controlling a still image
And a control method in a playback device for playing back two types of audio, wherein control is performed such that a first type of audio is output in accordance with a still image, and the output of the first type of audio is opened.
When starting, automatically set the output level of the audio of the second system.
It is characterized by being lowered to.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the present invention. In FIG. 1, reference numeral 10 denotes still image data;
A recording medium on which audio A data and audio B data, a reproduction sequence program, and the like are recorded. Specifically, a hard disk, a magneto-optical disk, a CD-RO
M, etc. 12 is a recording medium controller that controls reading of data from the recording medium 10,
A still image reproducing circuit 14 reproduces (expands) the still image data from the recording medium controller 12, converts it into a video signal of a predetermined format, and outputs it, and 16 reproduces (extends) the audio A data from the recording medium controller 12. The audio A reproduction circuit 18 outputs an analog audio signal, and reproduces (decompresses) the audio B data from the recording medium controller 12.
And an audio A reproduction circuit that outputs the analog audio signal.

In this embodiment, it is assumed that the sound A is a main sound (for example, narration) and the sound B is a sub sound (for example, background music (BGM)).

Reference numeral 20 denotes an attenuator for adjusting the signal level of the audio signal output from the audio A reproduction circuit 16;
An attenuator for adjusting the signal level of the audio signal output from the reproducing circuit 18; a mixing circuit 24 for combining the outputs of the attenuators 20 and 22;
2 by controlling the reading of the recording medium controller 12 and controlling the still image reproduction circuit 14, the audio A reproduction circuit, the audio B reproduction circuit, and the attenuators 20 and 22 in accordance with the reproduction sequence program from This is a control circuit for adjusting the output timing and output level of the reproduced sound.

Reference numeral 28 denotes a video output terminal for outputting the output of the still image reproducing circuit 14 to the outside.
Connect. 32 is an audio output terminal for outputting the synthesized audio signal output from the mixing circuit 24 to the outside,
Usually, the speaker 34 is connected.

FIG. 2 shows a flowchart of a processing sequence by the control circuit 26, and FIG. 3 shows a schematic diagram of an output sequence in this embodiment. In FIG. 3, the thickness of the band indicates the output level amount, and the triangle indicates an event in which one image reproduction is one operation.

FIG. 4 shows an example of a reproduction sequence program. The control circuit 26 controls each section according to the program.

Next, the flow of data in this embodiment will be described.

First, from the recording medium 10, a reproduction sequence
The program is read and loaded from the recording medium controller 12 into the control circuit 26. That is, the control circuit 26
First requests the recording medium controller 12 to read out the reproduction sequence program from the recording medium 10,
In response, the recording medium controller 12 controls the recording medium 1
The control circuit 26 reads the reproduction sequence program from 0, and takes in the reproduction sequence program from the output of the recording medium controller 12. The reproduction sequence program is described in a form as shown in FIG. Thereafter, the control circuit 26 operates according to the reproduction sequence program.

The image I reproduction and image II shown in FIG.
In the present embodiment, a program for image reproduction such as reproduction is considered as one operation for convenience of description, and will be referred to as an event.

A reproduction operation will be described with reference to a reproduction sequence program example shown in FIG.

In response to the audio B reproduction command (P102), the control circuit 26 requests the recording medium controller 12 to read the audio B data. Recording medium controller 12
Reads audio B data from the recording medium 10 and
It is applied to the reproduction circuit 18. The audio B reproducing circuit 18 immediately starts reproducing the input audio data.

P103 and P104 are notations indicating reproduction of the image I, and are one event as described above. When the control circuit 26 receives the program indicating the event, it does not immediately start the reproduction operation, but detects the program of the same event and synchronizes within one event.

That is, the control circuit 26 requests the recording medium controller 12 to read image I data in response to the event (P103) of "image I reproduction, time 5.00", and in response to this, recording is performed. The medium controller 12 reads out the image I data from the recording medium 10 and applies it to the still image reproducing circuit 14. The still image reproducing circuit 14 takes in the input still image data (image I data) into a built-in image memory. Since P103 and P104 belong to the same event, this still image data (image I data) is not immediately reproduced, but waits for reading of audio A data specified in P104, and is reproduced in synchronization with audio A data. You.

The "audio A / I playback, time 2.80" command (P104) synchronizes audio A with image I to 2.80 "
Output. In response to such a synchronous output command, the control circuit 26 controls the reproduction circuits 14, 16, 18
Then, the attenuators 20 and 22 are operated synchronously according to the contents of the instruction.

That is, in response to the command consisting of P103 and P104, the control circuit 26 first gradually increases the attenuation of the attenuator 22 through which the output of the audio B reproduction circuit 18 passes to the maximum (fade out). Next, the control circuit 2
6 is a command “Phone A / I playback, time 2.80” ”(P1
04), the recording medium controller 12 is requested to read the audio A data. At the same time, the control circuit 26
Minimizes the attenuation level of the attenuator 20. The recording medium controller 12 reads the audio A data from the recording medium 10 and applies it to the audio A reproduction circuit 16. The audio A reproduction circuit 16 starts reproduction of the input audio data in synchronization with the image I data already taken into the image memory in the still image reproduction circuit 14. As a result, the reproduced audio output of the audio A reproduction circuit 16 is applied to the speaker 34 via the mixing circuit 24 and the audio output terminal 32.

As will be described later in detail, during the output of the sound A, the control circuit 26 maximizes the attenuation of the attenuator 22. As a result, the sound B is not output from the output terminal 32.

Subsequently, the control circuit 26 executes the "audio A / I playback, time 2.80" command (P104) to 2.80 "
Later, the attenuation of the attenuator 20 is maximized to minimize the output of the audio A (cutout of the audio A), and the attenuation of the attenuator 22 is gradually reduced and finally minimized (the fade of the audio B). In).

The above operation is a series of operations for one event, and basically operates in the same manner for the subsequent events. For example, in response to the command “Picture II playback, time 7.00” ”(P105), which is the second event, the control circuit 26 immediately increases the attenuation of the attenuator 22 gradually and finally maximizes it. (Sound B fade-out).

The reproduction of the background sub-audio is started by the audio B reproduction command indicated by P102 of the reproduction sequence program shown in FIG. 4, and a series of processes thereafter are performed as shown in FIG.
Is represented by the flowchart shown in FIG. The flowchart shown in FIG. 2 is in the form of a subroutine program, and thereafter, P103, P105, P107, P109 and P111 of the reproduction sequence program shown in FIG.
The operation shown in FIG. 2 is executed each time an event such as 1 that instructs reproduction of one image occurs.

The control circuit 26 waits for the occurrence of an event (S1). "Image I playback, time 5.00""(P1
03) occurs, the control circuit 26
Increases the attenuation of the attenuator 22 to lower the output level of the sound B (S2), and decreases the attenuation of the attenuator 20 to increase the output level of the sound A (S3). Next, the control circuit 26 controls the still image reproduction circuit 14 and the audio A reproduction circuit 1
6 is synchronously controlled to synchronously output the designated image and the sound A (S4).

Thereafter, the control circuit 26 operates as shown in FIG.
The reproduction of the audio A is continued while comparing the specified value of the reproduction time of the audio A such as “Audio A / I reproduction, time 2.80” described in (S5).

When the reproduction time of the sound A in the event ends, the control circuit 26 maximizes the attenuation of the attenuator 20 (S6), decreases the attenuation of the attenuator 22, and raises the output level of the sound B. Go (S7). Finally, after the end of the image reproduction time (S8), a series of operations ends.

The above is the basic operation for one event, and the operation shown in the flowchart of FIG. 2 is repeated for each event.

Since an attenuator capable of controlling the amount of attenuation is provided for each of the two audio reproduction systems, the audio output of the two systems can be controlled, and the audio output level can be changed at an arbitrary speed.

FIG. 5 shows another example of the reproduction sequence program. In FIG. 5, a parameter for designating the output level of the audio B to an arbitrary level is added.

At P202, the BGM of the voice B starts flowing, and at P204, the narration of the voice A starts flowing.
In P204, the volume of the BGM is changed to “audio Batt 1
0 ". This is a state in which the BGM volume is most reduced.

Next, in P206, a narration for the next event starts to flow, but at this time, the still image II and the BG
Since the relation of M is strong, “voice Batt 05”
The BGM volume is reduced to a level that does not hinder the narration, rather than completely reducing the voice B.

In the above embodiment, the audio output of two systems is controlled by the reproduction sequence program.
A monitor circuit for monitoring the output level of the audio B may be provided, and the reproduction output system of the audio B may be controlled based on the monitoring result.

The expression format of the reproduction sequence program shown in FIGS. 4 and 5 is merely an example, and it goes without saying that other expression formats may be used. It goes without saying that a part thereof may be implemented by hardware.

[0040]

As can be easily understood from the above description, according to the present invention, a still image output and a two-system audio
The output can be controlled automatically.

[Brief description of the drawings]

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

FIG. 2 is a flowchart of a main part relating to synchronous reproduction according to the embodiment.

FIG. 3 is a schematic diagram of an output sequence according to the present embodiment.

FIG. 4 is an example of a reproduction sequence program according to the present embodiment.

FIG. 5 is another example of the reproduction sequence program of the present embodiment.

[Explanation of symbols]

 10: Recording medium 12: Recording medium controller 14: Still image reproduction circuit 16: Audio A reproduction circuit 18: Audio B reproduction circuit 20: Attenuator 22: Attenuator 24: Mixing circuit 26: Control circuit 28: Video output terminal 30: Video monitor 32: audio output terminal 34: speaker

Claims (4)

(57) [Claims] 1. A playback device for playing back a still image and two-system sound, comprising controlling to output a first-system sound in accordance with a still image, and outputting the first-system sound. If you want to start the second
A reproducing apparatus characterized by automatically lowering the output level of system audio . Further, when stopping the output of the first system sound, the output level of the second system sound is adjusted.
2. The playback device according to claim 1, wherein the playback device is automatically turned on. 3. A control method in a reproducing apparatus for reproducing a still image and two systems of audio, wherein the first system audio is controlled so as to output a first system audio in accordance with the still image. To start the output of
A control method characterized by automatically lowering the output level of system audio . 4. Further, when stopping the output of the audio of the first lines, the output level of the audio of the second system
The control method according to claim 3, wherein the control is automatically performed .