JPH05268537A - Output control method in multimedia device - Google Patents

Abstract

(57) [Abstract] [Purpose] A multimedia device that has two or more playback devices for playing audio and images, such as CD-I and TV tuner, that can be used at the same time, which was previously available only by itself. To An audio selection unit 3 for selecting which of an audio signal output from an audio control unit of a CD-I reproduction unit 1 and an audio signal output from a TV reproduction unit 2 is input to an audio output unit 5, It has an image selection unit 4 for selecting which of the image signal output from the image control unit of the CD-I reproduction unit 1 and the image signal output from the TV reproduction unit 2 is input to the image display unit 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an output control system in a multimedia device having a CD (compact disc) medium as a medium and a built-in television (TV) tuner.

[0002]

2. Description of the Related Art Conventionally, a multimedia device having a built-in CD reproducing device (for example, a CD-I device) and a TV tuner displays a display screen and a speaker when a switch for TV reproduction is turned on during CD reproduction. The input signal of was switched to the signal from the TV tuner. That is,
Since I could only select CD playback or TV playback, C
The DI device and the TV tuner could only be used alone.

[0003]

SUMMARY OF THE INVENTION In the above conventional technique,
When the TV reproduction switch was turned on during CD reproduction, the input signal to the display screen and the speaker was automatically switched to the signal from the TV tuner. Therefore, there is a problem that it is impossible to listen to a music CD while watching TV.

[0004]

In order to solve the above-mentioned conventional problems, the present invention solves the above-mentioned problems by outputting an image selection unit for selecting an image signal input from each reproduction unit to an image display unit by a switch or the like and an audio output from each reproduction unit. By providing an audio selection unit for selecting an audio signal input to the switch by a switch or the like, it is possible to control the output of the image and the audio independently.

[0005]

With the above-described structure, the present invention allows a music CD to be listened to while watching the TV, for example, by turning on the TV reproduction switch during CD reproduction and switching the image selection section to the TV side. Also, by switching the audio selection unit to the TV side, the audio from the TV tuner is output from the speaker. Of course, the reverse of the above is also possible.

[0006]

1 shows a simple block diagram of a multimedia device according to an embodiment of the present invention. In FIG. 1, a CD-I playback unit that reads data from a (compact disc) and plays back audio and images, 2 is a TV playback unit that plays back audio and images from video signals, and 3 is an audio signal from the CD-I playback unit. Alternatively, an audio selection unit 4 for selecting one of the audio signals from the TV reproduction unit, 4 is an image selection unit for selecting either an image signal from the CD-I reproduction unit or an image signal from the TV reproduction unit, and 5 is an input. An audio output unit that outputs the input audio signal as audio, and an image display unit 6 that displays the input image signal on a TV screen or the like. FIG. 2 is a detailed block diagram of a multimedia device according to an embodiment of the present invention. In FIG. 2, 7 is a CD mechanical unit for reading data from a CD, and 8 is a C for controlling the CD mechanical unit.
D mechanical control unit, 9 is a data decoding unit that decodes data read from a CD, 10 is a voice control unit that decodes audio data read from a CD, 11 is a TV tuner, and 12 is voice control Section or audio output section for converting audio data input from a TV tuner into an audio signal, 13
Is a CPU, 14 is a ROM in which programs are stored, and 15 is C
An image control unit for decoding the image data read from D, 16 is an RA used as a work area of the CPU
M and 17 are image display sections for displaying the image data output from the image control section 15 or the TV tuner section 11, and 18 is audio data input to the audio output section from the audio control section or the TV tuner section. Voice selector, 19
Is an image selection unit for selecting the image data to be input to the image display unit from the image control unit or the TV tuner, 20 is a CD selection unit for instructing CD reproduction by a switch, and 21 is an instruction for TV reproduction by a switch The TV selection unit 22 to be operated is a power supply control unit that supplies power to the entire system. FIG. 3 shows an example of the configuration of the audio selection unit 18 and the image selection unit 19 in FIG. The audio signal input to the audio output unit is selected by the switch (1) in FIG. 3, and the image signal input to the image display unit is selected by the switch (2) in FIG. In the multimedia device of FIG. 1, a case where a TV is desired to be displayed on the screen while listening to a music CD will be described. If both reproducing devices are in the stopped state, the switch of the CD-I reproducing unit 1 and the switch of the TV reproducing unit 2 are turned on to start the reproduction of the CD and the TV. Next, in the audio selection unit 3, the audio data from the CD-I reproduction unit 1 is selected by the switch (1), and in the image selection unit 4, the image data from the TV reproduction unit 2 is selected by the switch (2). It is realized by.

[0007]

As is apparent from the above embodiment, the present invention is used as a CD player or a TV tuner in a multimedia device having a built-in CD player and TV tuner. However, according to the present invention, a multimedia device having two or more devices for reproducing sounds, images, etc., allows a user of the device to output each reproduction signal output from a plurality of reproduction devices. It has an effect that it can be selected and used.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a multimedia device according to an embodiment of the present invention.

FIG. 2 is a detailed block diagram of a multimedia device according to an embodiment of the present invention.

FIG. 3 is a diagram showing a configuration example of a voice selection unit and an image selection unit according to an embodiment of the present invention.

[Explanation of Codes] 1 ... CD-I playback unit, 2 ... TV playback unit, 3, 18 ... Audio selection unit, 4, 19 ... Image selection unit, 5, 12 ... Audio output unit, 6, 17 ... Image display unit , 7 ... CD mechanical part, 8 ... C
D mechanical control section, 9 ... data decoding section, 10 ... audio control section, 11 ... TV tuner section, 13 ... CPU, 14 ...
ROM, 15 ... Image control section, 16 ... RAM, 20 ... CD selection section, 21 ... TV selection section, 22 ... Power supply control section.

Claims (1)

[Claims] 1. A multimedia device having two or more reproducing units for decoding encoded audio signals and image signals, wherein audio signals and image signals outputted from the two or more reproducing units are provided. An output control method for multimedia devices that enables independent output control.