KR20070010897A - Method for setting video density mode on reserving record - Google Patents

Abstract

A method of setting a record quality mode when reservation recording is performed is provided to allow a user to select a record quality mode through preview when a displayed image is reservation-recorded in a digital image recorder to set the record quality of the image. A method of setting a record quality mode when reservation recording is executed includes steps of displaying multiple record quality modes according to a record quality setting function when a digital image is reservation-recorded(S208), setting a record quality mode selected by a user for the digital image(S212), and recording the digital image in the set record quality mode(S216).

Description

Quality Mode Setting for Scheduled Recording {Method for Setting Video Density Mode on Reserving Record}

1 is a block diagram schematically showing the configuration of a digital video recorder to which the image quality mode setting method is applied during reservation recording according to an embodiment of the present invention.

2 is a flowchart illustrating a method of setting an image quality mode during reservation recording according to an embodiment of the present invention.

3 is a configuration diagram schematically showing the configuration of the recording / reproducing section.

<Description of Symbols for Main Parts of Drawings>

100: digital video recorder 110: tuner

120: Demux 130: audio buffer

132: audio decoder 140: video buffer

142: video decoder 150: data buffer

160: recording / playback unit 170: control unit

172: memory 180: storage

190: key input processing unit 192: remote control

320: MPEG encoder 321: picture capture unit

322 to 325: first to fourth buffers 330: menu graphic generating unit

The present invention relates to a method for setting the image quality mode during reservation recording, and more particularly, when making a reservation recording on a digital video recorder for an image watched through a digital TV, the user can select each image quality mode in advance. The present invention relates to a method for setting a video quality mode at the time of scheduled recording, which enables to set a video quality of a recorded video.

In general, when a user records a desired broadcast image while watching a digital TV broadcast, the user inputs a recording command by operating a remote controller or the like, and accordingly, a transport stream for the broadcast image of the channel to be recorded is recorded on the DVD ( Recording on a storage medium such as a DVD) or a hard disk (HDD). In this case, the image quality of the broadcast image recorded on the storage medium is encoded in a recording quality selected by the user in advance and recorded on the storage medium.

For example, if the recording quality is set to HQ (High Quality) in the digital video recorder, the video data is encoded at a bit rate of 9.72 Mbits / sec and the audio data is encoded at a bit rate of 384 Kbits / sec. When the recording quality is set to SQ (Standard Quality), video data is encoded at 5.07 Mbits / sec and audio data is encoded at 256 Kbits / sec, so that the standard quality and standard sound quality are recorded, and the recording quality is LQ. When set to (Low Quality), video data is encoded at 3.38 Mbits / sec and audio data is encoded at 256 Kbits / sec to record with low and standard sound quality, and when the recording quality is set to EQ (Extension Quality). It encodes video data at 2.54 Mbits / sec and audio data at 256 Kbits / sec, recording the lowest and standard sound quality.

Accordingly, a user equipped with a digital video recorder such as a DVD recorder can, for example, set the recording quality to HQ mode to record video and audio in high quality and high sound quality, or set the recording quality to EQ mode for the lowest quality. Video and standard-quality audio can be recorded for a long time.

However, a general digital video recorder does not provide a function for allowing a user to directly compare video quality according to each recording quality of HQ / SQ / LQ / EQ. Accordingly, a user may sometimes record video and / or audio data at a quality that he / she does not want, and there is a problem in that the image quality of a program to be recorded cannot be predicted.

In addition, when recording in high quality, the picture quality may be clear and good for viewing, but it takes up a lot of storage capacity, and in the case of recording at low quality, it takes up less storage capacity but has a disadvantage of poor quality. .

In addition, in order to check the video quality according to each recording quality, a problem arises in that the video data already recorded according to each recording quality must be played back one by one.

In order to solve the above problems, the present invention, when pre-recorded recording on the digital video recorder for the video to watch through a digital TV, the user to preview the respective image quality mode to select the user, and the quality of the recorded image It is an object of the present invention to provide a method of setting an image quality mode during scheduled recording.

According to an aspect of the present invention, there is provided a method for setting a video quality mode during reservation recording, comprising: a first step of displaying a screen for selecting a multi-stage video quality mode in accordance with a video quality setting function when recording recording of a digital video; A second step of setting a user-selected image quality mode for the image quality of the digital image; And a third step of recording the digital image in a set image quality mode.

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

First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings.

In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram schematically showing the configuration of a digital video recorder to which the image quality mode setting method is applied during reservation recording according to an embodiment of the present invention.

The digital image recorder 100 to which the present invention is applied includes a tuner 110, a demultiplexer 120, an audio buffer 130, an audio decoder 132, and a video. Buffer 140, Video Decoder 142, Data Buffer 150, Record & Play Unit 160, Controller 170 , A memory 172, a storage 180, a key input processor 190, a remote controller 192, and the like.

Here, the tuner 110 is for receiving a digital broadcast signal by tuning a specific broadcast channel according to a channel tuning command from the controller 170, and the demux 120 is a digital broadcast signal received through the tuner 110. To parse MPEG transport streams into video, audio and data signals.

In addition, the audio buffer 130 is for buffering and temporarily storing the audio signal parsed by the demux 120, and the audio decoder 132 decodes the audio signal through the audio buffer 130 to enable playback output. To restore the audio signal. In addition, the video buffer 140 is for buffering and temporarily storing the video signal parsed by the demux 120, and the video decoder 142 decodes the video signal through the video buffer 140 to enable playback output. To restore the original video signal, the data buffer 150 buffers and temporarily stores the data signal parsed by the demux 120.

The recording / reproducing unit 160 converts data input from the outside into data suitable for recording under the control of the control unit 170, and records the data on a recording medium such as a DVD, a video tape, a hard disk (HDD), or the like. A series of data recording and reproducing operations for reading and reproducing the data recorded in the above is performed.

The controller 170 tunes the channel selected by the remote controller 192 through the tuner 110 and controls to record or display a broadcast image corresponding to the tuned channel. In addition, when the user selects the image quality setting through the remote controller 192 when setting the recording schedule, the controller 170 provides an image quality mode such as XQ, SQ, LQ, EQ, etc., and sets the image quality mode selected by the user to broadcast the broadcast. Controls the video to be recorded at the set quality.

The memory 172 stores a channel selected by a key input, or stores information on an image quality mode selected by a user, and also stores demo images for each image quality mode. The storage 180 may be, for example, a DVD or a hard disk (HDD) in which various programs of digital video and audio data are recorded and stored.

Meanwhile, as illustrated in FIG. 3, the recording / reproducing unit 160 includes the MPEG encoder 320, the picture capturing unit 321, and the first to fourth buffers 322, 323, 324, and 325, and the menu graphic generator. The voice portion 330 may be configured.

Therefore, when the user sets the recording quality, the controller 170 controls the picture capture unit 321 to capture an intra-picture of an input video data stream, and the MPEG decoder 320 By controlling, the captured I-pictures are encoded in the recording quality of HQ / SQ / LQ / EQ, respectively.

In addition, the controller 170 selectively enables the first to fourth buffers 122, 123, 124, and 125 so as to display the still images of the encoded HQ / SQ / LQ / EQ, respectively. After divided into four buffers, the menu graphic generator 330 is controlled to display still images of HQ / SQ / LQ / EQ in the recording quality selection menu screen. At this time, the information related to the recordable time for each recording quality of the HQ / SQ / LQ / EQ, for example, the recording time ratio Rec_time_ratio information, is displayed in association with the still images of the HQ / SQ / LQ / EQ.

Therefore, the user can easily compare the video qualities according to the respective recording qualities, and accurately select the appropriate recording qualities desired by the user.

Next, an operation of the digital image recorder 100 having the above-described configuration will be described with reference to FIG. 2.

2 is a flowchart illustrating a method of setting a quality mode during reservation recording according to an embodiment of the present invention.

First, in the digital video recorder 100, the controller 170 parses the digital broadcast signal of the broadcast channel tuned through the tuner 110 into the video, audio, and data signals of the MPEG transport stream through the demux 120. The audio decoder 132 and the video decoder 142 reproduce and output audio and video signals.

At this time, when the user wants to set a recording reservation for the next program while watching the broadcast video, the user performs a key input related to the recording reservation through the remote controller 192 (S202).

If there is a key input related to recording reservation through the key input processing unit 190, the control unit 170 displays and outputs a plurality of menus related to recording reservation setting (S204). In this case, a plurality of menu screens related to recording reservation setting may be output through an OSD screen, and the plurality of menus include menus for setting a recording date, a recording time, a recording name, a recording quality, and the like.

The user selects the image quality setting menu immediately after setting the recording reservation data according to the recording reservation setting (S206).

When the image quality setting menu is selected through the remote controller 192, the controller 170 displays each image quality mode screen such as XQ, SQ, LQ, EQ, etc. on the output screen or the OSD screen according to a user's selection key input. It outputs (S208). That is, the controller 170 controls the picture capturing unit 321 to capture any one picture of the input video data stream, for example, to capture an I-picture. The controller 170 controls the MPEG decoder 120 to encode the I-pictures captured by the picture capture unit 321 with the recording quality of HQ / SQ / LQ / EQ, respectively, and includes the first to fourth buffers ( 122, 123, 124, and 125 are sequentially enabled, so that a still image encoded with HQ recording quality is stored in the first buffer 322, a still image encoded with SQ recording quality is stored in the second buffer 323, and LQ. Still images encoded with the recording quality are stored in the third buffer 324 and still images encoded with the EQ recording quality are stored in the fourth buffer 325.

As described above, when all encoding operations are completed in HQ / SQ / LQ / EQ image quality, the controller 170 controls the menu graphic generator 330 to display the still images stored in the first to fourth buffers, respectively. It is displayed in the mode selection screen. Here, the image quality mode selection screen displays still images encoded in each image quality of HQ / SQ / LQ / EQ together in a predetermined size, and in each still image, a relative recording time ratio (Rec_time_ratio) according to each image quality. This linkage can be displayed. Each recording quality includes 100% of recording time for HQ recording quality, 200% of recording time for SQ recording quality, 300% of recording time for LQ recording quality, and 400% of recording time for EQ recording quality. It can be displayed in conjunction with a still image.

In addition, any one still image displayed on the image quality selection menu screen may be superimposed with a cursor for selecting a corresponding recording quality. For example, if a user wants to record high quality video, the user selects a still image of HQ quality, and selects a still image of EQ quality if a user wants to record for a long time instead of recording the lowest quality video.

Therefore, the user selects a desired image quality mode to be set while sequentially checking the XQ image quality mode screen, the SQ image quality mode screen, the LQ image quality mode screen, and the EQ image quality screen by operating the arrow button through the remote controller 192 (S210). .

The controller 170 sets the image quality of the output screen in the image quality mode selected by the user (S212).

Subsequently, the user performs a key input related to start of recording through the remote controller 192 (S214), and the controller 170 displays the corresponding broadcast image through the recording / playback unit 160 in the image quality mode selected and set by the user. The program is recorded and stored in the storage 180 such as a DVD or a hard disk (HDD) (S216).

For example, when the user selects the HQ image quality mode, the controller 170 controls the MPEG encoder 320 to encode input video data at a bit rate of 9.72 Mbits / sec and input audio data at 384 Kbits / sec. The camera will record high quality and high sound quality. On the other hand, when the user selects the EQ image quality mode, the MPEG encoder 320 is controlled to encode the input video data at a bit rate of 2.54 Mbits / sec and the audio data at 256 Kbits / sec to record the lowest image quality and the standard sound quality. Done.

Therefore, the user can easily compare the video quality, and can record the broadcast image in the quality mode that the user wants to watch.

As described above, according to the present invention, when pre-recorded recording on a digital video recorder for an image viewed through a digital TV or the like, the user can select each image quality mode by previewing the image quality to set the image quality of the recorded image. A picture quality mode setting method can be realized during reservation recording.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, when the broadcast video input from the outside is recorded on the recording medium, the user can set and record the image quality mode that the user wants to watch, thereby improving user convenience.

Claims (4)

A first step of displaying a screen for selecting a multi-stage image quality mode according to the image quality setting function when recording a recording of a digital image; A second step of setting a user-selected image quality mode for the image quality of the digital image; And And a third step of recording the digital image in a set image quality mode. The method of claim 1, The image quality mode of the multi-stage includes HQ, SQ, LQ, EQ stages, characterized in that the recording mode recording method characterized in that the step. The method of claim 1, And the screen for selecting the image quality mode is to display still images encoded with each image quality of HQ / SQ / LQ / EQ in a predetermined size. The method of claim 3, wherein The still image is generated by encoding pictures captured from a video stream with multi-level image quality, respectively. And a relative recording time ratio (Rec_time_ratio) according to each image quality is displayed in association with each still image.

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