KR100703002B1 - Signal processing apparatus capable of selective encoding and selective coding method thereof - Google Patents

Abstract

A signal processing apparatus capable of selective encoding and a selective encoding method thereof are disclosed. The signal processing apparatus includes an operation unit for receiving a selection command for selecting at least one analog signal among analog video signals and analog sound signals, an encoder unit for encoding an analog signal, and at least one selected according to the selection command. And a control unit for controlling the encoder unit to encode the analog signal. Accordingly, according to the user's selection, only the selected analog signal can be encoded and then reproduced or stored.

Encoding, MPEG-2, encoder, stream

Description

Signal processing apparatus capable of selective encoding and its selective encoding method {Signal process apparatus capable of selective encoding and method

1 is a block diagram schematically showing the configuration of a conventional signal processing apparatus;

2 is a block diagram showing a configuration of a signal processing apparatus according to an embodiment of the present invention;

3 is a diagram illustrating a UI window for selecting an encoding target in a signal processing apparatus according to an embodiment of the present invention, and

4 is a flowchart illustrating an operation of a signal processing apparatus according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: external signal input unit 110: MPEG-2 encoder unit

120: operation unit 130: control unit

140: UI generation unit 150: playback unit

160: storage unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal processing apparatus capable of selective encoding and a selective encoding method thereof. More particularly, the present invention relates to a video signal and an audio signal input in analog form, according to a user's selection. The present invention relates to a signal processing apparatus capable of selective encoding for converting into a video stream or a multi stream, and a selective encoding method thereof.

In recent years, as digitalization of various multimedia proceeds, in order to transmit and store video signals, audio signals, and data signals corresponding to various kinds of information in a large amount in order to provide high quality images and high quality sound to users, MPEG (Moving Picture Experts Group) -2 uses the compression method according to the standard.

For example, after encoding a digital video signal, an audio signal, and a data signal generated by a broadcasting station using MPEG-2 compression, a transport stream (Trasnfport Stream) is generated and transmitted. Then, the broadcast receiving apparatus receives and decodes the transport stream, processes the signal, and provides the signal to the user.

However, since broadcasting is a service industry dealing with an unspecified number of people, it is not possible to change the structure of all broadcasting systems to digital by ignoring the analog method used at once. For this reason, there is a need for a signal processing apparatus such as a digital broadcasting receiver for receiving an analog signal transmitted from a broadcasting station, encoding it using the MPEG-2 scheme, and providing the same to a user.

To this end, conventionally, a signal processing apparatus capable of converting an analog signal into a stream corresponding to the MPEG-2 standard by using an MPEG-2 encoder and playing and storing the same is used.

1 is a block diagram schematically showing the configuration of a conventional signal processing apparatus.

Referring to FIG. 1, a conventional signal processing apparatus includes an external signal input unit 10, an MPEG-2 encoder unit 30, a storage unit 50, and a reproduction unit 70.

The external signal input unit 10 receives a broadcast signal transmitted in an analog form and receives analog video and audio signals from a tuner (not shown) separated into analog video and audio signals. In addition, the analog video and audio signals are received from an external device that reproduces the video and audio signals stored in the analog form.

The MPEG-2 encoder unit 30 converts an analog image and an audio signal input to the external signal input unit 10 into a digital image and an audio signal, and then encodes the image using an MPEG-2 method to convert the image into a video stream and an audio stream. Output

The storage unit 50 is a hard disk drive (HDD) or an external storage medium capable of storing video and audio streams. The reproduction unit 70 decodes the encoded video stream and the audio stream in an MPEG-2 manner, and then processes the signal to output an image and sound.

As described above, since the analog video and the audio signal are conventionally encoded by the MPEG-2 method, there is no choice for the user. That is, even when the user wants to reproduce only the sound signal, since all the video signals are encoded and reproduced, a load is generated in reproducing the sound signal. In addition, even when only the audio signal is to be stored, since the video signal is stored together, the capacity becomes large, and thus only the sound signal desired by the user cannot be stored in the small storage medium.

Accordingly, an object of the present invention is a signal processing apparatus capable of selectively encoding an analog signal selected according to a user's selection in an MPEG-2 manner and a selective encoding method thereof in order to reproduce or store only a video signal or an audio signal desired by a user. In providing.

According to an aspect of the present invention, there is provided a signal processing apparatus including: an operation unit for receiving a selection command for selecting at least one analog signal among an analog image signal and an analog sound signal, an encoder unit for encoding the analog signal; And a controller for controlling the encoder to encode at least one analog signal selected according to the selection command.

Here, the encoder unit preferably encodes the at least one analog signal using a Moving Picture Experts Group (MPEG) -2 scheme.

The encoder may further include an audio encoder for encoding the analog sound signal to generate an audio stream, a video encoder for encoding the analog video signal to generate a video stream, and the audio. It is possible to include a multi-stream generator for multiplexing the stream and the video stream to generate a multi-stream.

In the selective encoding method of the signal processing apparatus according to the present invention, a selection command for selecting at least one analog signal from among an analog image signal and an analog sound signal is received, and at least one analog signal selected according to the selection command. Encoding the encoding.

In this case, the encoding of the at least one analog signal is characterized by using Moving Picture Experts Group-2 (MPEG-2).

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. However, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be abbreviated or omitted.

2 is a block diagram showing the configuration of a signal processing apparatus according to an embodiment of the present invention.

2, the signal processing apparatus includes an external signal input unit 100, an MPEG-2 encoder unit 110, an operation unit 120, a control unit 130, a UI generation unit 140, a playback unit 150, And a storage unit 160.

The external signal input unit 100 receives a broadcast signal transmitted in an analog form, and receives analog video and audio signals from a tuner (not shown) separated into analog video and audio signals. In addition, the analog video and audio signals are received from an external device that reproduces the video and audio signals stored in the analog form.

The MPEG-2 encoder unit 110 encodes the selected analog signal by MPEG-2 according to the control of the controller 130 to be described later, and generates an audio encoder 112, a video encoder 114, and a multistream generator. Section 116.

The audio encoding unit 112 converts the analog sound signal input through the external signal input unit 100 into a digital sound signal, and then encodes the signal in an MPEG-2 manner to generate an audio stream.

The video encoding unit 114 converts the analog video signal input through the external signal input unit 100 into a digital video signal, and then encodes the video signal in MPEG-2 to generate a video stream.

The multistream generator 116 multiplexes the encoded audio stream and the video stream to generate a multistream. That is, each of the audio stream and the video stream is divided into packet data lengths, and then an audio packet and a video packet are generated. The generated audio packet and the video packet are combined into one multistream.

The operation unit 120 includes various keys (not shown) for controlling the operation of the signal processing apparatus, and the user selects at least one analog signal among analog video signals and analog sound signals by operating various keys. Input the command to the signal processing device.

The controller 130 controls the MPEG-2 encoder 110 to encode the selected analog signal in an MPEG-2 manner according to a user's selection command input through the manipulation unit 120. For example, when an analog sound signal is selected through the operation unit 120, the controller 130 controls the MPEG-2 encoder 110 to convert the analog sound signal into a digital sound signal, and then MPEG-2. Encoding in the

The user interface (UI) generation unit 140 generates an on-screen display (OSD) menu corresponding to a user command input through the manipulation unit 120 under the control of the controller 130. That is, an OSD menu corresponding to a user's selection command for selecting an encoding target is generated.

The playback unit 150 decodes the stream output from the MPEG-2 encoder 110 in an MPEG-2 manner, processes the signal, and provides the same to a user. That is, when the audio stream is output from the MPEG-2 encoder unit 110, the audio signal is processed and output as sound. When the video stream is output from the MPEG-2 encoder unit 110, the signal is processed and output as an image.

In addition, when the multi-stream is output from the MPEG-2 encoder 110, the signal is processed and output as an image and sound. Then, the OSD menu generated by the UI generator 140 is processed to be displayed on the screen.

The storage unit 160 is an external storage medium such as a hard disk drive (HDD) or a DVD, and a video, which can store a stream output from the MPEG-2 encoder unit 110. The storage 160 stores audio streams, video streams, or multi-streams output from the MPEG-2 encoder 110 according to a user's needs.

3 is a diagram illustrating a UI window for selecting an encoding target in a signal processing apparatus according to an embodiment of the present invention.

The UI window 200 of the signal processing apparatus includes an output selection window 220 and a storage selection window 240.

The output selection window 220 includes an output button 221 for selecting whether to output an image or sound, an image selection button 223 for selecting whether to encode an analog video signal, and selecting whether to encode an analog sound signal. It includes a sound selection button 225 for.

The storage selection window 240 includes a storage button 241 for selecting whether to store a video stream or an audio stream, an image selection button 243 for selecting whether to encode an analog video signal, and whether to encode an analog sound signal. Sound selection button 245 for selecting the.

As shown in FIG. 3, a case in which the user 'ON' the sound selection button and 'OFF' the image selection button, 'ON' the output button, and 'OFF' the storage button will be taken as an example. . At this time, the analog sound signal of the input analog sound signal and the analog video signal is encoded by the MPEG-2 encoder unit 110 and output as an audio stream, the playback unit 150 decodes the audio stream by the MPEG-2 method To the user.

4 is a flowchart illustrating an operation of a signal processing apparatus according to an embodiment of the present invention.

According to FIG. 4, first, it is checked whether an encoding target selection command has been received. That is, the user displays the UI window 200 on the screen through the operation unit 120 and selects whether to play or store the image and sound (S300).

Among the input analog video signal and analog sound signal, the analog signal corresponding to the selection command is encoded in the MPEG-2 method and output as a stream. In this case, when the selected signal is an analog sound signal, it is output as an audio stream, and when the selected signal is an analog video signal, it is output as a video stream. If both the analog sound signal and the analog video signal are selected, they are output in multistream (S320).

Then, the output stream is stored or played. That is, as illustrated in FIG. 3, when the user displays the UI window on the screen through the operation unit 120, the storage button 241 is 'ON', and the playback button is 'OFF', the selected stream is signal processed. And output (S340).

By the above method, the video and the sound can be selected and stored or reproduced.

As described above, according to the present invention, only one analog signal according to the user's selection is encoded by the MPEG-2 method among the input analog video signal and the audio signal, thereby widening the user's selection and reducing the storage capacity. The efficiency of the processing device can be increased.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the above-described specific embodiment, the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Anyone of ordinary skill in the art that various modifications can be made, as well as such changes are within the scope of the claims.

Claims (5)

An operation unit for receiving a selection command for selecting at least one analog signal from among analog video signals and analog sound signals; An encoder unit for encoding the selected analog signal; A reproduction unit for reproducing a signal encoded by the encoder unit according to an output command input through the operation unit; A storage unit storing a signal encoded by the encoder unit according to a storage command input through the operation unit; And And a controller configured to control the encoder to encode at least one analog signal selected according to the selection command, and to control at least one operation of storing and reproducing the signal encoded by the encoder. Signal processing apparatus. The method of claim 1, The encoder unit, And encoding at least one analog signal using a Moving Picture Experts Group (MPEG) -2 scheme. The method of claim 1, The encoder unit, An audio encoding unit encoding the analog sound signal to generate an audio stream; A video encoding unit encoding the analog video signal to generate a video stream; And And a multi-stream generator for multiplexing the audio stream and the video stream to generate a multi-stream. Receiving a selection command for selecting at least one analog signal from among analog video signals and analog sound signals; Encoding at least one analog signal selected according to the selection command; And And performing at least one of storage and playback on the encoded signal. The method of claim 4, wherein And encoding the at least one analog signal comprises using Moving Picture Experts Group-2 (MPEG-2).

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