JPH11243522A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device that is provided with a means for storing a video signal and an audio signal which does not depend on provision of an external recording means. SOLUTION: An audio signal and a video signal received from an input means 1 are quantized via a 1st A/D converter 21A and a 2nd A/D converter 21B, and outputs of the A/D converters are composition by a composting means 22 and stored in a buffer 23 consisting of an FIFO under the control of a control means 25. After the audio signal and the video signal stored in the buffer 23 have been separated by a separating means 24, they are restored by a 1st D/A converter 26A and a 2nd D/A converter 26B respectively and outputted from an audio means 27A and a video means 27B respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly to a display device provided with a means for temporarily storing a video signal and an audio signal.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional display device has an audio unit 27A for outputting an audio signal input from an input unit 1, and a control unit 125 for controlling a video signal input from the input unit 1. And an image unit 27B for outputting an image signal controlled by the control unit 125. The audio signal input from the input unit 1 is directly controlled by the audio unit 27A and the image signal input from the input unit 1 is controlled by the image unit 27A. Output by the video image means 27B via the means 125,
There was no means to temporarily store the input signal.

[0003]

Therefore, in the conventional display device, a recording device or the like is separately provided between the device and the input means which is a signal generation source in order to temporarily store the video signal and the audio signal. Needed.

Accordingly, an object of the present invention is to provide a display device provided with a means for storing a video signal and an audio signal without providing an external recording means.

[0005]

In order to solve the above-mentioned problems, a display device according to the present invention comprises a first A / D converter for quantizing an audio signal input from an input means,
A second quantizing the video signal input from the input means;
A / D converter, synthesizing means for synthesizing the video signal and audio signal quantized by the second A / D converter and the first A / D converter, respectively, and a sound signal and a video signal synthesized by the synthesizing means. FIFO to save for a period
, A separating means for separating the audio signal and the video signal stored in the buffer, a first D / A converter for restoring the audio signal separated by the separating means, and a first D / A An audio unit for outputting an audio signal restored by the converter, a second D / A converter for restoring the video signal separated by the separation unit, and a second D / A converter
Video means for outputting a video signal restored by the A-converter, and controlling the buffer so as to store the audio signal and the video signal synthesized by the synthesizing means for a predetermined period, and the audio signal and the video signal stored in the buffer And control means for controlling the separating means so as to separate the two.

[0006]

Next, a display device according to an embodiment of the present invention will be described with reference to the drawings.

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

As shown in FIG. 1, a display device according to one embodiment of the present invention includes a first A / D converter 21A for quantizing an audio signal input from input means 1, and
2A for quantizing the video signal input from the input means 1
/ D converter 21B, the second A / D converter 21
B and a synthesizing means 22 for synthesizing the video signal and the audio signal respectively quantized by the first A / D converter 21A, and a FIFO for storing the audio signal and the video signal synthesized by the synthesizing means 22 for a predetermined period. A buffer 23; a separating unit 24 for separating the audio signal and the video signal stored in the buffer 23; a first D / A converter 26A for restoring the audio signal separated by the separating unit 24; An audio unit 27A for outputting an audio signal restored by the A converter 26, a second D / A converter 26B for restoring the video signal separated by the separation unit 24, and a video signal restored by the second D / A converter 26B And a buffer 2 for storing the audio signal and the video signal synthesized by the synthesizing means 22 for a predetermined period.
3 and control means 25 for controlling the separating means 24 so as to separate the audio signal and the video signal stored in the buffer 23.

Next, the operation of the display device according to one embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the operation of the display device according to the embodiment of the present invention is such that the audio signal and the video signal input from the input means 1 are converted by the first A / D converter 2.
After being quantized via the 1A and second A / D converters 21B and synthesized by the synthesizing means 22, the control means 25 controls the data to be stored in a buffer 23 formed of FIFO for a predetermined period. After the audio signal and the video signal stored in 23 are separated by the separating means 24,
The audio data 27A and the video data 2 are restored by the first D / A converter 26A and the second D / A converter 26B, respectively.
7B.

[0011]

As described above, according to the display device of the present invention, since the audio signal and the video signal input from the input means can be stored in the buffer, the stored data can be stored without using the external recording means. It has the effect of reproducing and reproducing the past video.

[Brief description of the drawings]

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

FIG. 2 is a block diagram of a conventional display device.

[Explanation of symbols]

 Reference Signs List 1 input means 2 display device 22 synthesizing means 23 buffer 24 separating means 21A first A / D converter 21B second A / D converter 26A first D / A converter 26B second D / A converter 27A audio means 27B video means

Claims (1)

[Claims] 1. A first A / D converter for quantizing an audio signal input from an input means, a second A / D converter for quantizing a video signal input from the input means, the second A / D converter, and Synthesizing means for synthesizing the video signal and the audio signal quantized by the first A / D converter, a buffer formed of a FIFO for storing the audio signal and the video signal synthesized by the synthesizing means for a predetermined period, Separating means for separating the audio signal and the video signal stored in the buffer, a first D / A converter for restoring the audio signal separated by the separating means, and a first D / A
An audio unit for outputting an audio signal restored by the converter, and a second unit for restoring the video signal separated by the separation unit.
Controlling the D / A converter, the video means for outputting the video signal restored by the second D / A converter, and the buffer for storing the audio signal and the video signal synthesized by the synthesis means for a predetermined period; A display device, comprising: control means for controlling the separation means so as to separate the audio signal and the video signal stored in the buffer.