KR20070002848A - Method for schedule recording in a digital broadcasting receiver - Google Patents

Abstract

A reservation recording method for a digital broadcasting receiver is provided to record main broadcasting although the recorded quality of a partial interval is degraded when the remaining capacity of the recording medium is insufficient and to record all the main broadcasting and advertisement broadcasting when the rest capacity of the recording medium is sufficient by selectively excepting the advertisement broadcasting from a recorded object according to the rest capacity of the recording medium when a broadcasting signal is reserved and recorded. A control unit checks a reservation recording progress prediction time according to reservation recording setup before performing reservation recording according to the reservation recording setup(S201,S203). The control unit checks a recordable remaining time of a recording medium for recording a broadcasting signal according to the reservation recording setup(S205). The control unit compares the recordable remaining time with the reservation recording progress prediction time, and discriminates whether it is possible to record the entire time of a broadcasting signal according to the reservation recording setup(S207). If the recordable remaining time is sufficient, the control unit records all a main broadcasting program and an advertisement program in the recording medium during a reservation recording setup time(S209). If the recordable remaining time is insufficient, the control unit records only the main broadcasting program except for the advertisement program in the recording medium during the reservation recording setup time(S211).

Description

Schedule recording method of digital broadcast receiver {METHOD FOR SCHEDULE RECORDING IN A DIGITAL BROADCASTING RECEIVER}

1 is a block diagram of a general digital broadcast receiver;

2 is a block diagram of a digital broadcast receiver capable of performing a reservation recording method according to the present invention;

3 is a flowchart for explaining a reservation recording method according to the present invention;

<Explanation of symbols for main parts of the drawings>

11: receiver 13: decoder

15 codec section 17 D / A conversion section

19: control unit 21: storage unit

23: input unit 25: EPG processing unit

100: advertising detection unit

The present invention relates to a reserved recording method of a digital broadcast receiver, and more particularly, to reserve recording of a digital broadcast receiver to selectively exclude commercials from a recording target according to the remaining capacity of a recording medium at the time of reserved recording of a broadcast signal. It is about a method.

As is well known, digital broadcasting refers to television broadcasting which compresses and outputs a television signal in a digital form in which information signals are encoded and recorded. Conventional analogue television broadcasting can only carry one image in one radio wave, and voice has to be transmitted in another radio wave. On the other hand, since digital broadcasting can carry a plurality of images or audios in one radio wave and can compress information without degrading the quality, 4 to 8 channels can be set in the frequency band of the conventional analog broadcasting channel. . In addition, it is easy to control information using a computer, and it is also possible to interactively export information ordered from the viewer side. Digital broadcasting compresses video and audio, and modulates multiple signals. Communications and computers also use these compression and multimodulation techniques. Therefore, digital broadcasting is a core technology of the multimedia age where broadcasting, communication, and computer are combined.

Recently, with the rapid development of such digital broadcasting technology, a PVR (Personal Video Recorder, PVR) using a storage device such as a hard disk driver (HDD) as an image storage medium by combining with computer technology has been in the spotlight. The PVR is a personal video storage device that can digitally store the received broadcast signal in the HDD instead of the existing video tape.

Such a PVR can digitally record broadcasts such as over-the-air TVs, cable TVs, and satellites. If a pause command is input during broadcast playback, the PVR can record until a play command is input. Therefore, even after a predetermined time elapses after the user presses the pause button, the user can view a broadcast from the time when the user presses the pause button. At this time, the broadcast signal from when the pause command is input to when the play command is input is stored in a storage device such as an HDD.

1 illustrates a block diagram of a PVR as an example of a general digital broadcast receiver.

As shown in FIG. 1, the PVR includes a receiver 11, a decoder 13, a codec 15, a D / A converter 17, a controller 19, a storage 21, and an input 23. ) And the EPG processing unit 25.

The decoder 13 converts a digital broadcast signal received through the receiver 11 from the outside into a signal that can be viewed or stored. When the broadcast signal received from the outside is a CVBS (Composite Video Signal) signal, the decoder 13 converts the CVBS signal into a YUV signal or an RGB signal.

When a recording command for a broadcast signal is input through the input unit 23, the decoder 13 converts an analog signal CVBS signal into a digital signal YUV signal and outputs it.

The codec unit 15 encodes, ie, compresses, the input YUV signal and outputs the MPEG data. The compressed MPEG data is stored in the storage unit 21. The storage unit 21 uses a mass storage medium such as a hard disk driver (HDD).

When a playback command for the MPEG data stored in the storage unit 21 is input, the codec unit 15 detects the stored MPEG data from the storage unit 21. The codec unit 15 decompresses the detected MPEG data and outputs the compressed YUV signal. That is, the compression codec unit 15 compresses and encodes the YUV signal under the control of the control unit 19, or compresses and decodes the compression-encoded signal.

The D / A converter 17 converts the decompressed YUV signal into an RGB signal which is an analog signal. On the other hand, when there is no storage command for the received broadcast signal from the input unit 23, the decoder 13 converts the CVBS signal into an RGB signal and outputs it.

The RGB signal converted by the decoder 13 or the D / A converter 17 is input to an image display unit (not shown) to implement an image.

The controller 19 controls the decoder 13 to convert the received broadcast signal into a digital signal when a storage command for the broadcast signal is input from the input unit 23. In addition, when a reproduction command for the stored compressed data is input, the controller 19 controls the codec unit 15 to detect and decompress the stored compressed data.

The digital broadcast signal received through the receiver 11 includes not only audio and video packets but also a program and system information protocol (PSIP), so that the information on the program of each channel can be known. That is, the packetized audio and video information is configured so that the contents can be viewed only when the PSIP information is present. The PSIP information includes EIT (Event Information Table) information, which is commonly called a broadcast guide.

The decoder 13 extracts the EIT table included in the digital broadcast signal under the control of the controller 19, and the program ID (PID), start time, broadcast time length, program grade, image from the EIT table for broadcast guidance. It decodes and outputs information such as type and voice multiplex.

Then, the EPG processor 25 configures the broadcast guide information decoded by the decoder 13 in its own unique format to display the broadcast guide screen, that is, the EPG screen, on the display device.

On the other hand, in such a PVR, "reserved recording" means that if a recording command for a specific program is set in advance through a broadcast guide screen, that is, an EPG screen, the specific program is automatically recorded at the corresponding time under the control of the controller 19. It is called a function.

However, only the main broadcast of the program is included in the broadcast signal, and most of the broadcast signals include advertising broadcasts. In the conventional reservation recording, commercial broadcasts are often recorded, and thus, the capacity of the recording medium is wasted as unnecessary information.

As a conventional technique for solving such a problem, a broadcast station transmits advertisement identification information for identifying an advertisement program when the digital broadcast stream includes the advertisement program, and the digital broadcast receiver excludes the advertisement program during reservation recording. There has been proposed a technique for recording only the present program.

However, the advertisement program is inserted before or after the broadcast program or in the middle of the broadcast program. Since the time difference between the broadcast program and the advertisement program is very short, the recording start time, the recording pause time, and the end time of recording are precisely determined. Only by controlling can the desired recording quality be achieved.

However, since a hard disk or a DVD-RW mainly used as a recording medium in a digital broadcasting receiver requires pre-drive for recording, it is very difficult to accurately match a recording start time.

Accordingly, when only the broadcast program is recorded except for the advertisement program, there is a problem that the recording quality is deteriorated in some sections of the broadcast program.

The present invention has been proposed to solve such a conventional problem, and by selectively excluding commercials from the recording target according to the remaining capacity of the recording medium at the time of reserved recording of the broadcast signal, when the remaining capacity of the recording medium is insufficient, Even if the recording quality of the recording is somewhat reduced, only the main broadcast is recorded, but when the remaining capacity of the recording medium is sufficient to record both the main broadcast and the commercial so that the recording quality of the main broadcast does not deteriorate.

The reservation recording method of the digital broadcasting receiver according to the present invention for realizing the above object comprises the steps of checking a scheduled recording progress time according to the reservation recording setting before performing the reservation recording according to the reservation recording setting; Checking the recordable remaining time of the recording medium for recording the broadcast signal according to the setting, and comparing the scheduled recording progress time with the recordable remaining time to record the broadcast signal of all the times according to the scheduled recording setting on the recording medium. Determining whether it is possible, and if it is determined that the remaining recordable time is sufficient according to the determination result, recording both the present program and the advertisement program on the recording medium during the scheduled recording setting time; If it is determined that it is insufficient, the advertisement program during the scheduled recording time Recording only the broadcast program in a recording medium in a state excluding the recording process.

There may be a plurality of embodiments of the present invention, hereinafter with reference to the accompanying drawings will be described in detail a preferred embodiment. Through this embodiment will be able to better understand the objects, features and advantages of the present invention.

FIG. 2 is a block diagram of a digital broadcast receiver capable of performing a reservation recording method according to the present invention. In comparison with the conventional digital broadcast receiver illustrated in FIG.

As shown in FIG. 2, the digital broadcast receiver of the present invention includes a receiver 11, a decoder 13, a codec unit 15, a D / A converter 17, a controller 19, and a storage 21. ), An input unit 23, an EPG processing unit 25, and an advertisement detection unit 100.

In describing the functions of the individual components of the digital broadcast receiver according to the present invention, the receiver 11, the decoder 13, the codec unit 15, the D / A converter 17, the storage 21, Since the input unit 23, the EPG processing unit 25, and the like have the same or similar functions as the corresponding components of the conventional digital broadcast receiver shown in FIG. 1, the description thereof will be omitted.

The advertisement detector 100 extracts advertisement identification information included in the digital broadcast signal received through the receiver 11 and provides the extracted advertisement identification information to the controller 19.

The controller 19 controls the decoder 13 to convert the received broadcast signal into a digital signal when a storage command for the broadcast signal is input from the input unit 23. In addition, when a reproduction command for the stored compressed data is input, the control unit 19 controls the codec unit 15 to detect and decompress the stored compressed data. In addition, when a reserved recording command for a broadcast signal is input through the input unit 23, the remaining recordable capacity of the storage unit 21 is checked before the scheduled recording is performed, and the scheduled time and recording time according to the reserved recording setting are possible. By comparing the remaining time, when the remaining recordable capacity is insufficient, only the present broadcast is recorded in the state excluding the commercial, and when the remaining recordable capacity is sufficient, both the present broadcast and the commercial are recorded.

A process of reserved recording by the digital broadcast receiver according to the present invention configured as described above will be described in detail below with reference to FIGS. 2 and 3.

First, when the broadcast guide information decoded by the decoder 13 is composed of a broadcast guide screen, that is, an EPG screen by the EPG processing unit 25 and displayed on the display device, the user refers to the EPG screen and inputs the input unit 23. Set scheduled recording of a specific program through.

Then, the controller 19 checks the start time of the reservation recording based on the reservation recording setting information, and checks the scheduled recording progress time according to the reservation recording setting before performing the reservation recording.

After the controller 19 checks the recordable remaining capacity of the storage unit 21, the controller 21 compares the scheduled recording progress time with the recordable remaining time, and stores the broadcast signal for all the times according to the reserved recording setting. Determine whether recording is possible. That is, it is determined whether the recordable remaining time is not sufficient or whether the recordable remaining time is insufficient.

If it is determined in step S207 that the recordable remaining time is sufficient, both the present program and the advertisement program are stored in the storage unit 21 in the same manner as in the normal reserved recording mode.

However, if it is determined in step S207 that the recordable remaining time is insufficient, only the broadcast program viewed in the state excluding the advertisement program, that is, the advertisement broadcast, is stored in the storage unit 21 based on the advertisement identification information extracted through the advertisement detection unit 100. Save it.

As a result, when the remaining recording time is sufficient in the storage unit 21, all the broadcast programs according to the schedule recording setting are recorded, so that some of the errors occurred due to difficulty in accurately controlling the recording start time, the recording pause time, and the recording end time. This is to prevent deterioration of the recording quality of the section.

It has been described so far limited to one embodiment of the present invention, it is obvious that the technology of the present invention can be easily modified by those skilled in the art. Such modified embodiments should be construed as naturally included in the technical spirit described in the claims of the present invention.

As described above, the present invention selectively excludes the commercial from the recording target according to the remaining capacity of the recording medium at the time of reserved recording of the broadcast signal, so that when the remaining capacity of the recording medium is insufficient, even if the recording quality of some sections is somewhat reduced. When recording only a broadcast but the remaining capacity of the recording medium is sufficient, the recording quality of the main broadcast is reduced by recording both the main broadcast and commercial broadcast.

Claims (1)

A method of recording a broadcast signal in accordance with a scheduled recording setting in a digital broadcast receiver, Checking a scheduled recording progress time according to the reserved recording setting before performing the scheduled recording according to the reserved recording setting; Checking a recordable remaining time of a recording medium for recording the broadcast signal according to the reserved recording setting; Comparing the scheduled recording progress time with the recordable remaining time to determine whether a broadcast signal of all times according to the reserved recording setting can be recorded on the recording medium; Recording both the present program and the advertisement program on the recording medium during the reserved recording setting time when it is determined that the recordable remaining time is sufficient according to the determination result; If it is determined that the recordable remaining time is insufficient according to the determination result, recording only the main program on the recording medium in the state of excluding the advertisement program for the reserved recording setting time. Reservation recording method of the digital broadcast receiver comprising a.

Images