KR100738794B1 - Method for setting time-shift area in hard disc type recorder - Google Patents

Abstract

A time shift recording area management method of a hard disk-type recorder is provided to record broadcasting programs of each channel in a time shift area by dividing the broadcasting programs, therefore user management is easily conducted later on. When a random broadcasting program is received to a hard disk-type recorder, EPG(Electronic Program Guide) data loaded on a VBI(Vertical Blanking Interval) area of the broadcasting program is extracted(S200). Image data of the program and the extracted EPG data are simultaneously recorded in a time shift recording area(S202,S204). The extracted EPG data is checked in real time to decide whether the EPG data is changed(S206,S208). If so, the changed EPG data and broadcasting program division block data are sequentially recorded in the time shift recording area(S210).

Description

How to manage the time-shifted recording area of the hard disk recorder {METHOD FOR SETTING TIME-SHIFT AREA IN HARD DISC TYPE RECORDER}

1 is a schematic structural block diagram of a hard disk type recorder, for example a PVR system, for implementing a method according to the present invention;

2 is a flowchart of a time shift recording area management process of a hard disk type recorder according to a preferred embodiment of the present invention;

3 is an exemplary diagram of a time shift recording area in which EPG data and block data are separately recorded in the video data recording process of FIG. 2;

FIG. 4 is a diagram illustrating an OSD use screen for each broadcast program in which respective image data are divided and recorded according to the EPG data and the block data of FIG. 3.

<Explanation of symbols for main parts of the drawings>

100: image processing unit 102: EPG extraction unit

104: MPEG processing unit 106: hard disk storage unit

108: key input unit 110: control unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for managing broadcast program information in a hard disk type recorder, for example, a PVR system. In particular, a hard disk suitable for facilitating subsequent user management by separately recording a broadcast program for each channel on a time shift area. The present invention relates to a method for managing a time shift recording area of a method recorder.

As is well known, the PVR is a personal recording / playback apparatus, and has a large storage medium (e.g., a hard disk driver (HDD), etc.) therein for storing recorded data (i.e., broadcast program data). And a function of reproducing data stored in such a storage medium.

Here, the broadcast program data stored in the storage medium is encoded (compressed) and stored in the MPEG2 method in order to increase the utilization of the storage space. When the stored data is reproduced, the broadcast program data is decoded (restored) in the MPEG2 method and output. Therefore, the PVR can record a large amount of broadcast program data on a storage medium.

On the other hand, the time-shift (time-shift) function is a function for storing a broadcast program data in such a storage medium and allowing the user to arbitrarily watch the stored broadcast program data after a predetermined time elapses. A progress bar is displayed on the display and displays the current progress of the total playback capacity. In other words, the cursor on the progress bar gradually moves from left to right to represent the recording or playback process.

By the way, the time shift section in the conventional PVR or hard disk type recorder combo is always fixed. For example, although the time is different for each product, the time shift section is limited to a space of 1 to 3 hours, and when the time shift section is filled with the image data, an algorithm that automatically deletes the image data in the stored order is employed. Doing.

Accordingly, the present applicant can selectively edit, move, and delete image data required by the user if the image data recorded in the time shift recording area, that is, the broadcast programs can be easily visually distinguished and displayed to the user. It is easy to understand that the efficiency is increased in terms of space utilization of the time shift recording area.

The present invention is based on the conventional concept described above, and according to the change of EPG (Electronic Program Guide) data of the VBI (Vertical Blanking Interval) region, the image data of the time-shift recording region is recorded and recorded so that each program can be easily divided into OSD (On). It is an object of the present invention to provide a time shift recording area management method of a hard disk type recorder capable of maximizing user management convenience of recorded video data.

According to a preferred embodiment of the present invention for achieving the above object, as a video data recording method in a time shift mode of a hard disk type recorder, if any broadcast program is received by the hard disk type recorder, a VBI area of the broadcast program is provided. Extracting the EPG data loaded into the; and simultaneously recording the video data of the broadcast program and the extracted EPG data in a time shift recording area; and checking the extracted EPG data in real time to determine whether a change in the EPG data occurs. A method of managing a time shift recording area of a hard disc type recorder, comprising the step of determining, and sequentially recording the changed EPG data and block data in the time shift recording area when a change of the EPG data occurs.

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

Prior to the description of the embodiment, the present invention is to distinguish and record the image data of the time-shift recording region according to the change of EPG (Electronic Program Guide) data of the VBI (Vertical Blanking Interval) region, so that each program can be easily OSD processing, From this technical idea, it is possible to easily achieve the object of the present invention. In general, an NTSC TV screen sent from a broadcasting station is composed of 30 screens (frames) per second, and there is an empty space in which no data is loaded between the screens. This is called VBI, and data broadcasting performed by a broadcasting station is performed by loading information on the VBI. Applications that allow you to watch data broadcasts consist of a TV receive window and a browser window that shows data. These data broadcasts allow you to read relevant information while watching TV, and to search for relevant Internet sites as if you were surfing the web on a PC connected to the Internet. In the present embodiment, it is possible to easily distinguish a plurality of broadcast programs using the VBI.

1 is a schematic block diagram of a hard disk type recorder for implementing a method according to the present invention, for example, a PVR system, which includes an image processor 100, an EPG extractor 102, an MPEG processor 104, and a hard drive. The disk storage unit 106, a key input unit 108, and a control unit 110 are included.

As illustrated in FIG. 1, the image processor 100 performs image processing on broadcast program image information of an arbitrary channel tuned through a tuner, not shown, and provides the same to the MPEG processor 104 described later.

The EPG extractor 102 extracts EPG data from a broadcast program of an arbitrary channel tuned through a tuner and provides the extracted EPG data to the MPEG processor 104. EPG data may be extracted from the VBI region as described above.

The MPEG processor 104 serves to combine the image information from the image processor 100 and the EPG data from the EPG extractor 102 and store the combined information in the hard disk storage 106. The MPEG processing unit 104 is controlled by the control unit 110 described later.

The hard disk storage unit 106 is a main feature of the PVR system and serves to store image information processed by the MPEG processing unit 104. The hard disk storage unit 106 may be divided into an image data storage area in which a broadcast program is stored and a time shift recording area in which an image in a time shift mode is stored.

The key input unit 108 is a key signal input means formed on the front panel or the remote controller of the PVR system. The key input unit 108 generates a key signal corresponding to a user's input action and applies it to the controller 110.

The controller 110 controls overall operation of the PVR system in response to the key signal from the key input unit 108. In particular, the controller 110 checks the EPG data of the recorded video from time to time according to the present embodiment and controls the recording of the image data when the EPG data changes.

Hereinafter, the above-described configuration will be described in detail with reference to the flowchart of FIG. 2 attached to a time-shifted recording area management process of a hard disk type recorder, for example, a PVR, according to a preferred embodiment of the present invention.

As shown in FIG. 2, when an arbitrary broadcast program is received by the PVR, the controller 110 proceeds to step S200 to extract EPG data carried in the VBI area of the broadcast program.

Subsequently, the controller 110 proceeds to step S202 and step S204, when the time shift mode is performed, the image data of the broadcast program from the image processing unit 100 and the EPG extracted from the EPG extraction unit 102. The MPEG processing unit 104 is controlled to simultaneously record data in the time shift recording area. In this case, whether to activate the time shift function in which the time shift mode is performed may be set by the user through the key input unit 108 or may be set to be automatically set to the time shift mode when a broadcast program is received. Those skilled in the art will readily appreciate, and a detailed description thereof will be omitted.

Meanwhile, as in step S206, the controller 110 checks EPG data of the recorded video in real time.

As a result of the check in step S206, it is determined whether a change in the EPG data occurs (S208), and when a change in the EPG data occurs, the controller 110 proceeds to step S210 to change the changed EPG data and the broadcast program division block. The MPEG processing unit 104 is controlled to sequentially record data in the time shift recording area.

The process of step S210 is a process for classifying and recording each image data according to the present embodiment, and the result is as shown in FIG. 3.

As shown in FIG. 3, the time shift recording area stored in the hard disk storage unit 106 is an EPG data area in which corresponding EPG data is recorded before data of an image is recorded, and for distinguishing a broadcast program. It can be divided into a block data area and a video data area in which actual broadcast programs are recorded. Each of the image data is divided into first program image data and second program image data. When there is a change in the EPG data as in step S208, the first program image data having separate EPG data and block data and It may be divided into second program image data.

Subsequently, if the time shift function end key signal is applied from the key input unit 108 in the middle of recording the image data in the time shift recording area as described above (S212), the controller 110 ends the process.

On the other hand, as described above, when the EPG data and the image data are separately recorded, the OSD menu screen which is finally output through the video device (for example, the television receiver) is as illustrated in FIG. 4.

As shown in FIG. 4, since each broadcast program may be OSD processed by different information, for example, different colors, by each program division block data information, a user may search for a time shift area on the OSD menu. When you need to quickly and intuitively select the broadcast program you need. This feature of the present invention can facilitate a user editing (copy, move, delete, playback, etc.) function in each program, for example, the first program.

As mentioned above, although this invention was demonstrated concretely based on the Example, this invention is not limited to this Example, Of course, various deformation | transformation is possible for it within the technical idea and the scope of the following claim.

According to the present invention, the channel (program) information is recorded in the PVR as separate information on the time shift recording area so that the user needs to search the time shift area through the OSD menu screen. Since it is possible to quickly and easily recognize which channel a broadcast program is, it provides a user environment for easily editing (copying, moving, deleting, playing, etc.) broadcasting programs of unnecessary channels.

Claims (4)

A video data recording method in a time shift mode of a hard disk type recorder, Extracting EPG data carried in the VBI area of the broadcast program when an arbitrary broadcast program is received by the hard disk type recorder; Simultaneously recording the video data of the broadcast program and the extracted EPG data in a time shift recording area; Checking the extracted EPG data in real time to determine whether a change in the EPG data occurs; Sequentially recording the changed EPG data and the program block data in the time shift recording area when the EPG data changes. Method of managing a time shift recording area of a hard disk type recorder comprising a. The method of claim 1, The method, And classifying each broadcast program according to the changed EPG data and the block data to perform OSD processing. The method of claim 1, The time shift recording area is A method for managing a time shift recording area of a hard disk type recorder, characterized by comprising a plurality of broadcast information comprising an EPG data area, a broadcast program division block data area, and a broadcast program video data area. The method according to any one of claims 1 to 3, And said hard disk type recorder is a PVR.

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