KR20050008390A - A television capable of storing audio signal and a controlling method thereof - Google Patents

Abstract

PURPOSE: A television capable of storing voice signal data and a method of controlling the television are provided to save data of analog voice signals in an internal memory immediately while a user watches the television, thereby enabling desired voice data to be listened repeatedly and easily. CONSTITUTION: A voice processing part(130) converts an analog voice signal of broadcast signals or an analog voice signal from a reproducing unit into analog L(Left)/R(Right) sound. A voice data storage part(140) stores data of the analog L/R sound in an internal memory area. An audio A(Analog)/D(Digital) converter(141) changes the analog L/R sound to digital L/R sound. An encoder(142) encodes the digital L/R sound according to a compress format type set in advance. A memory(143) stores the digital L/R sound. A decoder(144) decodes the digital L/R sound according to the compress format type. An audio D/A converter(145) changes the decoded digital L/R sound to analog L/R sound as an output.

Description

A television capable of storing audio signal and a controlling method

The present invention relates to a television capable of storing an audio signal and a control method thereof, and more particularly, to an analog memory signal of a broadcast signal or an analog audio signal input from a playback device, which can be stored in an internal memory unit by a storage command. A television and a control method thereof.

In general, a television is a device that displays an image by receiving a broadcast signal transmitted from a broadcasting station or an external input signal such as CATV (Cable Television). When a user selects a broadcast channel by operating a remote control transmitter or a key panel, the broadcast signal corresponding to the selected channel is tuned and output. In addition, a signal input from a playback device such as a VCR or a DVD player is demodulated into a video signal and an audio signal and output through a display unit such as a CRT or a speaker.

Conventionally, when a user wants to record a current broadcast signal while watching television, a recording / playback apparatus such as a VCR is used. In addition, when recording only audio signals excluding video signals, a voice recorder or the like was used. However, when recording a broadcast signal or an audio signal by using such a recording / reproducing apparatus, there was a need to prepare a separate recording / reproducing apparatus. In addition, since the storage medium of the recording / reproducing apparatus has a limit of a storage time of 90 minutes to 120 minutes, it is inconvenient to replace and replace the storage medium once every 90 minutes to 120 minutes.

Therefore, in order to eliminate such inconvenience, it may be assumed that the television itself has a memory unit and stores a broadcast signal therein. However, when storing a broadcast signal, that is, an audio signal as well as a video signal together, there is a disadvantage in that many broadcast signals cannot be stored due to the limitation of the memory unit capacity.

In addition, if you want to listen to various voice-related programs stored in the storage media several times using a VCR or DVD player, if you want to listen to the program by the conventional method, you should install and play the storage media in the recording / playback device every time you listen. There was a hassle.

It is an object of the present invention to provide a television and a control method thereof capable of storing an analog audio signal input to the television in an internal memory.

It is still another object of the present invention to provide a television and a control method thereof capable of storing not only an analog audio signal but also an analog audio signal input from a playback device in an internal memory.

1 is a block diagram showing a portion of a television according to the present invention;

2 is a flowchart showing a process of storing an analog audio signal in a memory unit in a television according to the present invention; and

3 is a flowchart illustrating a process of reproducing a voice signal stored in a memory unit according to the present invention.

Explanation of symbols on the main parts of the drawings

150: audio signal storage unit 151: audio A / D conversion unit

152: encoder 153: memory unit

154: decoder 155: audio D / A converter

In order to achieve the above technical problem, the present invention, the voice processing unit for receiving any one of the analog voice signal of the broadcast signal, and the analog voice signal input from the playback device to convert to analog L / R sound, and Provided is a television comprising a voice data storage for storing the converted analog L / R sound in a predetermined internal memory area.

The audio data storage unit may include an audio A / D converter for converting the converted analog L / R sound into a digital L / R sound, an encoder for encoding the converted digital L / R sound according to a predetermined compression format. A memory for storing the digital L / R sound in the predetermined internal memory area, a decoder for decoding the stored digital L / R sound according to the compression format method, and an output target analog for the decoded digital L / R sound. And an audio D / A converter for converting to L / R sound.

In order to achieve the above technical problem, the present invention, (a) selecting the analog voice signal source, (b) receiving an analog voice signal from the selected analog voice signal source, (c) the analog input And converting the audio signal into analog L / R sound, and (d) storing the converted analog L / R sound in a predetermined internal memory area.

According to the present invention, it is possible to store an analog audio signal in a television and easily listen repeatedly.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the internal structure of a television according to the present invention.

The television 100 according to the present invention receives an analog voice related signal from a voice signal source. The voice related signal may be a voice signal itself or a signal including a voice signal. The audio signal source includes a broadcast signal transmitted from a broadcasting station and received through an antenna, and a reproduced audio signal directly input through an interface unit (not shown) of the television 100. However, the present invention is not limited to those presented above as a voice signal source, and any one can be provided to the television 100. In this case, the reproduced audio signal refers to an audio signal output from a DVD player, a VCR, or the like connected to the television 100.

The television 100 according to the present invention includes a switching unit 110, a tuner 120, a voice processing unit 130, a voice signal storage unit 140, a voice signal amplifier AMP 150, And a speaker 160. And an input unit not shown.

The input unit (not shown) receives a user command. The user command related to the present invention includes a voice signal source selection command, a voice signal storage command, a playback target voice signal selection command, and a voice signal reproduction command. When the voice signal source selection command is input, the controller (not shown) controls the switching unit 110 based on the input. That is, when the user selects a broadcast signal as a voice signal source, the switching unit 110 receives the broadcast signal and outputs the broadcast signal to the tuner 120. When the user selects the reproduced voice signal as the voice signal source, the switching unit 110 directly outputs the reproduced voice signal to the voice processor 130. When a voice signal storage command is input, the controller (not shown) may control the voice processor 130 and the audio A / D converter to store the voice signal input to the television 100 in the memory unit 143 through a predetermined process. 141, the encoder 142, and the memory unit 143 are controlled. When a play target voice signal selection command is input based on the voice signals stored in the memory unit 143, a corresponding play target voice signal is loaded from one or more voice signals stored in the memory unit 143 under the control of a controller (not shown). And output through a predetermined process. When a voice signal reproduction command is input, the controller (not shown) may output the voice signal stored in the memory unit 143 to the speaker 160 through a predetermined process. The memory unit 143, the decoder 144, and the audio D / The A converter 145, the AMP 150, and the speaker 160 are controlled.

The tuner 120 receives an RF (Radio Freuency) broadcast signal through an antenna (not shown) and tunes the selected channel. In addition, the analog voice signal among the input broadcast signals is processed by outputting an intermediate frequency (IF). Before the sound IF processing, the broadcast signal is separated into a video signal, an audio signal, and the like through a predetermined process. Since the separation of the signal is a known technique, detailed description thereof will be omitted.

The voice processor 130 receives an analog voice signal output through the tuner 120 or an analog reproduced voice signal directly input through the switching unit 110. Then, the input analog voice signal is converted into L-sound and R-sound.

The voice signal storage unit 140 stores the L-sound and the R-sound input through the voice processor 130 through a predetermined process. In order to store the voice signal through a predetermined process, the voice signal storage 140 may include the audio A / D converter 141, the encoder 142, the memory 143, the decoder 144, and the audio D / A. The converter 145 is provided.

The audio A / D converter 141 converts the input L-sound and R-sound from analog to digital. The digitally converted L-sound and R-sound are encoded by the encoder 142 according to a predetermined compression format. As a predetermined compression format method, it is preferable to adopt a sound MPEG-2 compression method. The encoded L-sound and R-sound are stored in the memory unit 143. The memory unit 143 may include a large capacity hard disk drive (HDD) or a small capacity memory device.

When a voice signal reproducing command and a reproducing target voice signal selection command are input through the input unit (not shown), under the control of the control unit (not shown), the decoder 144 receives the corresponding reproducing target voice signal stored in the memory unit 143. Load and decode according to the encoded compression format. The decoded audio signal to be reproduced, that is, the corresponding L-sound and R-sound, is converted from digital to analog by the audio D / A converter 145. The L-sound and R-sound converted to analog are then amplified by the AMP 150 and output through the speaker 160.

Hereinafter, a process in which a voice signal is stored in the voice signal storage 140 and the stored voice signal is loaded and output through a speaker according to the present invention will be described with reference to FIGS. 2 and 3.

2 is a flowchart illustrating a process of storing an analog audio signal in a memory unit in a television according to the present invention.

First, when a user selects a voice signal source (S210), a voice related signal is input from the selected voice signal source (S220). The user inputs a voice signal storage command to store the analog voice signal (S230). When the selected voice signal source is a broadcast signal, an analog voice signal of the input broadcast signal is input to the voice processor 130 through the tuner 120 (S240). In the tuner 120, the analog voice signal is subjected to sound IF processing (S250). When the selected audio signal source is an analog reproduction audio signal output from a reproduction device (not shown), the input analog reproduction audio signal is input to the audio processing unit 130 without passing through the tuner 120 (S240).

The voice signal input to the voice processor 130 is converted into L-sound and R-sound (S260), and the converted L-sound and R-sound are converted to analog through the audio A / D converter 141. It is converted to digital (S270). The digitally converted L-sound and R-sound are encoded by the encoder 142 in a predetermined compression format (S280), and the encoded L-sound and R-sound are predetermined in the memory unit 143. Is stored in the memory area (S290). Through this, the analog audio signal is stored in the memory unit 143 in the television.

3 is a flowchart illustrating a process of reproducing a voice signal stored in a memory unit according to the present invention.

First, the user selects a playback target voice signal from the voice signals stored in the memory unit 143 (S310). In addition, the user inputs a voice signal reproduction command (S320). Then, the playback target audio signal selected under the control of the controller (not shown) is loaded from the memory unit 143. The loaded playback target audio signal is decoded by the decoder 144 according to the encoded compression format (S320). The decoded audio signal, i.e., L-sound and R-sound, is converted from digital to analog by the audio D / A converter 145 (S330). The L-sound and the R-sound converted to analog are amplified by the AMP 150 and output to the speaker 160 (S340). This allows the user to listen to the audio signal stored in the television.

In the above description, the present invention has been described with reference to the internal structure related to the audio signal, and the television internal structure related to the video signal is omitted in the present specification because it is not significantly related to the present invention.

Although the present invention has been described in detail through the representative embodiments, those skilled in the art to which the present invention pertains can make various modifications without departing from the scope of the present invention. Will understand. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

According to the present invention, when a storage command is input for an input analog broadcast signal, the analog voice signal may be stored in a memory unit of the television. Therefore, the analog voice signal that the user wants to store while watching television can be immediately stored and then repeatedly listened to by the easy method.

In addition, it is possible to store analog reproduction audio signals reproduced through a playback device such as a DVD player, a VCR, or the like. Therefore, the audio signal of the voice related program to be listened to can be reproduced at first and stored in the TV internal memory, and then it can be repeatedly listened to by a simple method.

Therefore, according to the present invention, when only the voice signal of the broadcast signal received through the television is the information desired by the user, for example, in the case of foreign language conversation broadcasting and music-related broadcasting, it is not necessary to record all of the broadcast signal itself. Only signals can be separated and stored. In this manner, many voice signals can be stored even if the capacity of the internal memory unit is not large.

Claims (5)

A voice processing unit for receiving any one of an analog voice signal from a broadcast signal and an analog voice signal input from a playback device, and converting the analog voice signal into analog L / R sound; And And a voice data storage unit for storing the converted analog L / R sound in a predetermined internal memory area. The method of claim 1, The voice data storage unit, An audio A / D converter for converting the converted analog L / R sound into digital L / R sound; An encoder for encoding the converted digital L / R sound according to a predetermined compression format method; A memory for storing the encoded digital L / R sound in the predetermined internal memory area; A decoder for decoding the stored digital L / R sound according to the compression format method; And And an audio D / A converter for converting the decoded digital L / R sound into an output target analog L / R sound. (a) selecting an analog voice signal source; (b) receiving an analog voice signal from the selected analog voice signal source; (c) converting the input analog voice signal into analog L / R sound; And (d) storing the converted analog L / R sound in a predetermined internal memory area. The method of claim 3, In step (d), (d1) converting the converted analog L / R sound into digital L / R sound; (d2) encoding the converted digital L / R sound according to a predetermined compression format method; And (d3) storing the encoded digital L / R sound in the predetermined internal memory area. The method of claim 4, wherein (e) decoding the digital L / R sound stored in the predetermined internal memory area according to the compression format according to a playback command; (f) converting the decoded digital L / R sound into an output target analog L / R sound; And (g) outputting the output analog L / R sound to be converted.