KR100643435B1 - Apparatus and method for controling digital broadcasting program record - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for recording a digital broadcast program. For example, when recording a digital broadcast program in various types of video recorders such as a DVD-Recorder or the like, each field of digital broadcast data ( If the sequence start code (Seq_S_Code) or the sequence end code (Seq_E_Code) transmitted in units of units is detected and the sequence start code or the sequence end code is not continuously detected during the N field, the recording pose (Rec_Pause) Set the operation automatically, and if the sequence start code or the sequence end code is not detected continuously for a predetermined time thereafter, the recording stop (Rec_Stop) operation is automatically set to prevent broadcast data from being received normally due to broadcasting station circumstances or the like. The camera automatically poses and stops the recording operation to record to a recording medium such as an optical disc. Signal (No Signal) is very useful inventions which can be effectively prevented from being recorded.

Digital broadcast program, sequence start code, sequence end code, recording pose, recording stop, OS video, DVD recorder

Description

Apparatus and method for controling digital broadcasting program record             

1 illustrates an embodiment of a digital broadcast program recording control apparatus according to the present invention;

2 illustrates an embodiment of a sequence start / end code detected according to the present invention,

3 is a flowchart illustrating an operation of a method for controlling digital broadcast program recording according to the present invention;

4 and 5 illustrate a guide message for a recording pose and a recording stop displayed on the screen according to the present invention.

※ Explanation of code for main part of drawing

10: optical disc 11: optical pickup

12: VDR system 13: micom

14: OSD generator 15: timer

16: memory 17: tuner

18: sequence code detection unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for recording a digital broadcast program. For example, in various types of video recorders such as a DVD-Recorder, when recording a digital broadcast program, a recording medium such as an optical disc is not present. The present invention relates to a digital broadcast program recording control apparatus and method for efficiently preventing a signal from being recorded.

In general, a disc recorder capable of recording and playing back high-quality video data and high-quality audio data for a long time, for example, a DVD recorder, has been developed and commercialized. In the DVD recorder, an external input is performed. The audio and video signals to be encoded are encoded into audio and video data conforming to a DVD format, for example, AC3 audio data and MPEG 2 video data.

The encoded audio and video data is recorded in one program or title unit in the data area of the optical disc, and navigation for reproduction control of the program or title is performed. Information is generated and recorded and managed in a lead-in area of the optical disc.

On the other hand, in the DVD recorder, when a reproduction operation is requested by a user, a program or title recorded in the data area is read and reproduced by referring to the navigation information. A DVD recorder equipped with a tuner) has been developed and released, and a user can record and store a desired broadcast program on an optical disk such as a DVD (eg, a DVD-RW) capable of rewriting.

In the DVD recorder equipped with the tuner, a broadcast time, a broadcast channel, and a broadcast program name selected by a user may be set as reserved recording information in the device or provided through digital broadcast (EPG: By using the Electonic Program Guide), the user can easily set the reserved recording information for the broadcast program desired by the user.

In the DVD recorder, when the set broadcast time is reached, the system power is automatically turned on and the tuner is operated to control the broadcast channel automatically. After tuning to, a series of scheduled recording operations for recording a broadcast program received through the broadcast channel onto an optical disc are performed.

However, in the general DVD recorder as described above, even if broadcast program data is not normally received due to broadcasting station circumstances, the recording operation is continued until the user stops the recording operation or the scheduled recording end time is reached. Therefore, there is a problem that a no signal section exists in the data area of the optical disc such as a rewritable DVD.

Therefore, the present invention was created to solve the above problems, and for example, when recording a digital broadcast program in various types of video recorders such as a DVD-Recorder, each field of the digital broadcast data In addition to detecting a sequence start code (Seq_S_Code) or a sequence end code (Seq_E_Code) transmitted in units of (Field), and according to a detection result of the sequence start code or sequence end code, recording pause (Rec_Pause) or recording stop ( It is an object of the present invention to provide a digital broadcast program recording control apparatus and method for automatically setting a Rec_Stop operation so that no signal is recorded on a recording medium such as an optical disc.

In accordance with another aspect of the present invention, there is provided a digital broadcast program recording control apparatus comprising: receiving means for receiving a digital broadcast program; Detection means for detecting a sequence start code or sequence end code transmitted in units of fields of the digital broadcast program data; And control means for variably controlling a recording operation of the digital broadcast program according to a detection result of the sequence start code or sequence end code.

In addition, the digital broadcast program recording control method according to the present invention comprises the steps of: detecting a sequence start code or sequence end code transmitted for each field unit while recording digital broadcast data; And if the sequence start code or the sequence end code is not detected continuously during the N field, two steps of automatically setting a recording pose operation.

Hereinafter, exemplary embodiments of a digital broadcast program recording control apparatus and method according to the present invention will be described in detail with reference to the accompanying drawings.

First, the apparatus and method for recording a digital broadcast program according to the present invention can be applied to various types of video recorders such as a DVD recorder. For example, the DVD recorder to which the present invention is applied, as shown in FIG. , Optical disc 10, optical pickup 11, VDR (Video Disc Record) system 12, microcomputer 13, OSD generating unit 14, timer 15, memory 16, And a tuner 17 and a sequence code detector 18.

On the other hand, in the microcomputer 13, the tuner 17 is operated to tune to any one broadcast channel, and a digital broadcast program received through the broadcast channel is output to the optical disc through the VDR system 12. A recording operation for recording and storing at 10 is performed, or output is displayed through an external connection device such as a television.

In addition, the sequence code detector 18 detects a sequence start code Seq_S_Code or a sequence end code Seq_E_Code transmitted in units of fields of broadcast program data received through the tuner 17. As shown in Fig. 2, the start sequence end code (Seq_E_Code) is transmitted at the head of the blanking section of the digital broadcast signal corresponding to the blanking section of the analog broadcast signal, and the video corresponds to the effective scanning line of the digital broadcast signal. At the head of the data block, the sequence start code (Seq_S_Code) is transmitted along with it.

The sequence start code and the sequence end code, for example, have a length of 4T (T = 37ns) and have a code value of 'FF 00 00 XY', and the blanking interval and the effective scan line interval of the digital broadcast signal are In the case of a 625 scan line broadcast signal, the length is 228T and 1440T, and the digital scan line of one field is 1728T long, and in the case of a 525 scan line broadcast signal, the length is 176T and 1440T, and the digital scan line of one field is 1716T. Length.

On the other hand, when the microcomputer 16 records the broadcast program received through the tuner 17 on an optical disc 10 such as a rewritable DVD (eg, DVD-RW or the like), the sequence code detector 18 After determining whether there is no signal of the broadcast data by referring to the detection result of the sequence start code or the sequence end code detected in each field unit, the recording pose (Rec_Pause) or the recording stop (Rec_Stop) operation is performed. By setting this to automatic, no signal is recorded on the optical disc. This will be described in detail below.

3 is a flowchart illustrating a method for controlling recording of a digital broadcast program according to the present invention. For example, in the microcomputer 13, the tuner 17 may be used at the request of a user or in accordance with reserved recording information. And the VDR system 12 to perform a series of broadcast program recording operations for recording and storing the digital broadcast program on the optical disc 10 (S10).

Meanwhile, as described above with reference to FIG. 2, the sequence code detector 18 detects a sequence start code or sequence end code included in each field of a digital broadcast signal received through the tuner 17. When the sequence start code or the sequence end code is a predetermined period, for example, 625 scan line broadcast signals, the microcomputer 13 outputs to the microcomputer 13 (S11). It is checked whether the detection is normally detected at 1728T length intervals, and in the case of a 525 scan line broadcast signal, it is checked whether the detection is normally performed at 1716T length intervals corresponding to the digital scan lines of one field.

If the check result indicates that normal detection is not made (S12), a cumulative count of detection error occurrences is performed, for example, a sequence start code or sequence continues for a preset N field (eg, N = 10). If an error occurs in end code detection (S13), the microcomputer 13 operates the VDR system 12 to automatically set a recording poise operation, and the OSD generating unit 14 By controlling the operation, as shown in FIG. 4, it is displayed to guide that the recording pose operation (Rec_Auto_Pause) is automatically set due to a broadcasting error (Broadcasting Error) (S14).

On the other hand, in the microcomputer 13, when the recording start operation is set as described above, when the sequence start code or the sequence end code is not continuously detected for a predetermined time (for example, one minute) (S15), Operation control of the VDR system 12 to automatically set the recording stop operation, and operation control of the OSD generator 14 to automatically record the recording media due to a broadcast error as shown in FIG. In operation S16, the guide indicates that the wood operation Rec_Auto_Stop is set.

Subsequently, when performing any corresponding operation requested by the user or performing a scheduled recording operation, the system power is automatically turned off, and if a broadcast data is not received due to broadcasting station circumstances, the recording operation is automatically included. Wood and stop so that no signal is recorded on the optical disc.

For reference, the present invention can be applied not only to a DVD recorder but also to various other video recorders. In the OS video, a variety of messages may be included or displayed, or the OS video display operation may be omitted.

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

The digital broadcast program recording control apparatus and method according to the present invention constructed and configured as described above, for example, when recording a digital broadcast program in various types of video recorders such as a DVD-Recorder, digital broadcast data If the sequence start code (Seq_S_Code) or the sequence end code (Seq_E_Code) transmitted in units of each field is detected and the sequence start code or the sequence end code is not continuously detected during the N field, By setting the Rec_Pause operation automatically, and if the sequence start code or the sequence end code is not detected continuously for a predetermined time thereafter, the recording stop (Rec_Stop) operation is automatically set so that broadcast data may be If you do not receive normally, automatically record and stop recording operation. Greater and is extremely useful inventions which can be effectively prevented that a no-signal (No Signal) recorded on the same recording medium.

Claims (15)

delete delete delete delete delete delete delete delete Checking the type of broadcast received; Variably setting a search unit of specific information according to the identified broadcast type: Detecting specific information in the variable set search unit while recording the broadcast data; And And if the specific information is not continuously detected during the N search units, automatically setting a recording poise operation. The method of claim 9, The type of broadcasting is either 625 scanning line broadcasting or 525 scanning line broadcasting, and the specific code is a sequence start code and a sequence end code. The method of claim 10, And when the type of the broadcast is 625 scan line broadcast, detecting the sequence start code and the sequence end code in a 1728T length interval search unit corresponding to a digital scan line of one field. The method of claim 10, And the sequence start code and the sequence end code are detected in a search unit of 1716T length interval corresponding to one digital scan line when the type of the broadcast is 525 scan line broadcasts. Receiving means for receiving broadcast data; Detection means for detecting specific information by variably setting a search unit according to the type of the received broadcast data; And And control means for automatically poising the recording operation of the broadcast data if the specific information is not continuously detected during the N search units. The method of claim 13, The control means, when the type of the received broadcast data is 625 scan line broadcasts, operates the detection means to operate the sequence start code which is the specific information in a search unit of 1728T length interval corresponding to the digital scan line of one field. And detecting a sequence end code. The method of claim 13, The control means, when the type of the received broadcast data is 525 scan line broadcasts, operates the detection means to perform a sequence start code of the specific information in a search unit of 1716T length interval corresponding to a digital scan line of one field. And detecting a sequence end code.

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