JPH089331A - Reproducing device - Google Patents

Abstract

PURPOSE:To allow the reproducing device having reproduction outputs of a still image and two systems of audio to adjust a sound volume automatically. CONSTITUTION:A still image reproduction circuit 14 reproduces image data from a recording medium 10 and provides an output of it to an output terminal 28. An audio A reproduction circuit 16 reproduces audio A data (main audio data) from the recording medium 10 and an audio B reproduction circuit 18 reproduces audio B data (BGM) from the recording medium 10. A control circuit 26 controls the reproduction circuits 14, 16, 18 according to a reproduction sequence program recorded on the recording medium to control an attenuation of attenuators 20, 22. Outputs from the reproduction circuits 16, 18 are fed to a mixing circuit 24 via the attenuators 20, 22, in which the signals are synthesized and the resulting signal is fed to a speaker 34 via an audio output terminal 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus having one system for still image output and two systems for audio output.

[0002]

2. Description of the Related Art As a method for synchronizing a still image and a sound in a reproducing apparatus which outputs a still image and a sound at the same time, a sector interleave method adopted in CD-1I is known. This is 1 sector (about 2
This is a method of physically managing data in units of K bytes) and alternately arranging sectors of image data and sectors of audio data.

Further, as a method of easily synchronizing a still image and a sound at the time of authoring, while listening to the sound,
There is a method of tuning the output timing of the image data from the memory by cut and try.

[0004]

However, in the conventional reproducing apparatus for simultaneously outputting a still image and a sound, in general,
Since the output timings of the still image and the sound are not managed, the output timings are misaligned, which gives the viewer a great deal of discomfort.

Further, in order to synchronize the image and the sound at the time of authoring, the cut-and-try is only used as described above, and once the reproduction interval of the still image is changed, the cut-and-try is redone and the editing work is performed. It took a lot of man-hours.

Furthermore, when there are two systems of audio output, in the conventional example, the volume of each system of audio must be manually adjusted, which is very difficult for a general viewer to handle. Therefore, when listening as a continuous program, it is very difficult to operate.

It is an object of the present invention to provide a reproducing apparatus which does not cause such inconvenience.

[0008]

A reproducing apparatus according to the present invention is a multimedia reproducing apparatus which outputs a still image and two audio systems in parallel, and reproduces one audio system in synchronization with the still image. It is characterized in that it is provided with a means for doing.
Preferably, it is provided with a means for automatically adjusting the output level of another system of the audio according to the reproduction state of one system of the audio.

[0009]

With the above-mentioned means, the viewer does not have to adjust the audio output of the two systems by himself, and the operability is remarkably improved. You can easily control the still image output and the two audio outputs synchronously.
Further, even when editing, the time and cost spent for editing can be greatly reduced.

[0010]

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

FIG. 1 shows a schematic block diagram of an embodiment of the present invention. In FIG. 1, 10 is still image data,
A recording medium in which audio A data and audio B data, a reproduction sequence program, etc. are recorded, and more specifically, a hard disk, a magneto-optical disk, a CD-RO.
It consists of an optical disk such as M. Reference numeral 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 (expands) the audio A data from the recording medium controller 12. The audio A reproducing circuit 18 for outputting as an analog audio signal reproduces (expands) the audio B data from the recording medium controller 12.
The audio A reproducing circuit outputs the analog audio signal.

In this embodiment, the voice A is the main voice (for example, narration) and the voice B is the sub-voice (for example, background music (BGM)).

Reference numeral 20 is an attenuator for adjusting the signal level of the output audio signal of the audio A reproducing circuit 16, and 22 is an audio B.
An attenuator that adjusts the signal level of the output audio signal of the reproduction circuit 18, a mixing circuit 24 that combines the outputs of the attenuators 20 and 22, and a recording medium controller 1
According to the reproduction sequence program from 2, the reading of the recording medium controller 12 is controlled, and the still image reproducing circuit 14, the audio A reproducing circuit, the audio B reproducing circuit, and the attenuators 20 and 22 are controlled to reproduce the reproduced image and the two systems. 2 is a control circuit for adjusting the output timing and output level of the reproduced sound of.

Reference numeral 28 is a video output terminal for outputting the output of the still image reproducing circuit 14 to the outside.
Connect. Reference numeral 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 flow chart 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 triangular mark indicates an event in which the reproduction of one image is one operation.

FIG. 4 is an example of a reproduction sequence program, and the control circuit 26 controls each section according to the program.

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

From the recording medium 10, the reproduction sequence
The program is read and loaded from the recording medium controller 12 to the control circuit 26. That is, the control circuit 26
First requests the recording medium controller 12 to read the reproduction sequence program from the recording medium 10,
In response to this, the recording medium controller 12 causes the recording medium 1
The reproduction sequence program is read from 0, and the control circuit 26 takes in the reproduction sequence program from the output of the recording medium controller 12. The reproduction sequence program is described in the form shown in FIG. After that, the control circuit 26 operates according to the reproduction sequence program.

It should be noted that image I reproduction and image II shown in FIG.
In this embodiment, a program for image reproduction such as reproduction is considered as one operation for convenience of description, and is called an event.

The reproduction operation will be described with reference to the 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 the audio B data from the recording medium 10,
It is applied to the reproducing circuit 18. The audio B reproduction circuit 18 immediately starts the reproduction of 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 a program representing an event, it does not immediately start the reproduction operation, detects a program of the same event, and synchronizes within one event.

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

The command "Pulse 104: Playback audio A / I, time 2.80" synchronizes audio A and image I with 2.80 ".
It indicates to output. In response to such a synchronous output command, the control circuit 26 causes the reproduction circuits 14, 16, 18
Also, the attenuators 20 and 22 are synchronously operated according to the instruction content.

That is, in response to the command made up of P103 and P104, the control circuit 26 first gradually increases the attenuation amount of the attenuator 22 through which the output of the audio B reproducing circuit 18 passes to maximize it (fade out). Next, the control circuit 2
6 is a command for "sound A / I reproduction, time 2.80""(P1
The recording medium controller 12 is requested to read out the audio A data shown in 04). 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 stored in the image memory in the still image reproduction circuit 14. As a result, the reproduced sound output of the sound A reproduction circuit 16 is applied to the speaker 34 via the mixing circuit 24 and the sound output terminal 32.

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

Subsequently, the control circuit 26 outputs 2.80 "from the" voice A / I reproduction, time 2.80 "" command (P104).
After that, the attenuation amount of the attenuator 20 is maximized to minimize the output of the audio A (cutout of the audio A), the attenuation amount of the attenuator 22 is gradually decreased, and finally the attenuation amount of the audio A is minimized (fading of the audio B). Inn).

The above operation is a series of operations for one event, and basically the same operation is performed for the following events. For example, the control circuit 26 immediately gradually increases the attenuation amount of the attenuator 22 and finally maximizes it in response to the second event, "Image II reproduction, time 7.00""command (P105). (Voice B fade out).

The reproduction of the background sub-sound is started by the sound B reproduction command indicated by Pl02 of the reproduction sequence program shown in FIG. 4, and a series of processing thereafter is performed.
It is represented by the flowchart shown in. The flowchart shown in FIG. 2 is in the form of a subroutine program, and thereafter, the reproduction sequence programs Pl03, Pl05, Pl07, Pl09 and Pl1 shown in FIG.
The operation shown in FIG. 2 is executed each time an event for instructing the reproduction of one image such as 1 occurs.

The control circuit 26 waits for the occurrence of an event (S1). "Image I play, time 5.00""(P1
03), the control circuit 26
Raises the attenuation amount of the attenuator 22 to lower the output level of the voice B (S2), and lowers the attenuation amount of the attenuator 20 to raise the output level of the voice 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 voice A (S4).

After that, the control circuit 26 sets Pl04 in FIG.
Continuation of the reproduction of the audio A while comparing the specified value of the reproduction time of the audio A such as "Sound A / I reproduction, time 2.80""described in 1) with the value of the timer in the control circuit 26. Yes (S5).

When the reproduction time of the voice A in the event is finished, the control circuit 26 maximizes the attenuation amount of the attenuator 20 (S6), reduces the attenuation amount of the attenuator 22 and raises the output level of the voice 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 in FIG. 2 is repeated for each event.

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

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

At P202, the BGM of the voice B starts to flow, and at P204, the narration of the voice A starts to flow.
In P204, the volume of BGM is changed to "Sound B att 1
It is specified by the description "0". This is the state in which the BGM volume is turned down most.

Next, at P206, narration for the next event begins to flow, but at this time, the still image II and BG
Since M has a strong relationship, we call it "Voice B att 05".
Instead of completely turning down the voice B, the BGM volume is turned down to the extent that it does not disturb the narration.

In the above embodiment, the audio output of two systems is controlled by the reproduction sequence program.
It is also possible to provide a monitor circuit for monitoring the output level of and to control the reproduction output system of the audio B according to the monitor result.

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

[0040]

As can be easily understood from the above description, according to the present invention, the still image output and the two-system audio output can be synchronously controlled by a very simple process. Further, even when editing, the time and cost spent for editing can be greatly reduced.

[Brief description of drawings]

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

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

FIG. 3 is a schematic diagram of an output sequence of this embodiment.

FIG. 4 is an example of a reproduction sequence program of this 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 reproducing circuit 16: audio A reproducing circuit 18: audio B reproducing 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 (2)

[Claims] 1. A multimedia reproducing apparatus for outputting a still image and two audio systems in parallel, the reproducing apparatus comprising means for reproducing one system of audio in synchronization with the still image. . 2. The reproducing apparatus according to claim 1, further comprising means for automatically adjusting an output level of another system of audio according to a reproduction state of one system of the audio.