KR19990016128A - Information recording / reproducing apparatus and method - Google Patents

Abstract

The information recording / reproducing apparatus and its method encodes any information desired by a user when recording a composite video signal, inserts it into the vertical blanking interval of the signal, and then plays back the recorded video signal. In order to decode and use the information recorded together, the information recording apparatus includes information input means for inputting information for recording desired information in a video signal to be recorded, and information for recording the information of the information input means. First control means for converting the data into a horizontal line in the vertical blanking interval section of the video signal, and a vertical blank interval of the video signal to be recorded for recording the converted data according to the control signal of the first control means. The horizontal line searching means for searching for a horizontal line in the section, and the control signal according to the control signal of the first control means. Information insertion means for inserting the converted information into a horizontal line searched by the flat line search means and synthesizing it with a video signal to be recorded, and video signal recording means for recording the synthesized video signal of the information insertion means on a recording medium; The information reproducing apparatus includes: information extracting means for extracting previously recorded information from the reproduced video, second control means for converting the information extracted by the information extracting unit into corresponding image information, and the second control means. An object of the present invention is to provide an information recording / reproducing method comprising a video signal synthesizing means for synthesizing the converted image information and a reproduced video, and video display means for reproducing the synthesized video of the video signal synthesizing means.

Description

Information recording / reproducing apparatus and method

The present invention relates to an information recording / reproducing apparatus and a method thereof, and more particularly, to an information recording / reproducing apparatus for recording / reproducing information by using a vertical blanking interval of a composite video signal. It's about how.

Hereinafter, an information recording / reproducing method according to the related art will be described with reference to the accompanying drawings, divided into an index search method and a method of recording information during recording to IC.

First, an index search method will be described.

1 is an exemplary diagram of an information recording method according to the prior art, in which a portion of a first recorded image 2 recorded at a predetermined position of a VCR tape (or disc) 1 is located in front of the first recorded image 2; An index 3 is recorded.

In addition, the second and third recorded video (4) (6) in front of the second and third recorded video (4) (6) recorded at a predetermined position of the VCR tape (or disk) (1), respectively, Indexes 5 and 7 are recorded respectively.

After the index information is recorded in the signal recording section of the VCR tape (or disk) as described above, the user records the index information by using the VCR tape (or disk) high-speed search function. There is a way to find the interval and read simple information recorded in the index.

Next, a description will be given of a method of recording information at the time of recording to IC.

First, there is a method of recording information on a recorded video in a memory IC in a recording device by a conventional method of recording a video signal and then searching for information on the video signal.

In this method, when recording a video signal, information on the video is recorded in the IC, and when the recorded video is played back, the information in the IC can be viewed.

However, in the information recording / reproducing method according to the prior art, the index search method requires a user to search a VCR tape (or disc) in order to find the information, and the contents of the recording information can also be recorded simply. There is this.

In addition, the method of recording the information at the time of recording to IC IC has a limitation in capacity, and only the reproduction apparatus in which the information is recorded can reproduce the information corresponding to the reproduced video.

That is, it is not suitable for recording information on a large number of images, there is a problem in that the use is limited because the information can be viewed again only if the information is already recorded in the IC (IC).

Accordingly, the present invention has been made to solve the above problems, and when recording a composite video signal, any information desired by the user is encoded and inserted into the vertical blanking interval section of the signal. It is an object of the present invention to provide an information recording / reproducing apparatus which can decode and use recorded information when reproducing a recorded video signal.

It is also an object of the present invention to provide an information recording / reproducing method corresponding to the above apparatus.

Figure 1-Example of the format of an information recording method according to the prior art

2 is an exemplary view showing a waveform of a vertical blanking interval section.

Figure 3-Waveform diagram of writing 16 bits on one vertical line (H line) of vertical blanking intervals

4-block diagram of an information recording apparatus according to the present invention

5-4 flow chart

6-block diagram of an information reproducing apparatus according to the present invention

7-6 flowcharts

8-6 shows an example of the playback screen

＊ Explanation of symbols on main parts of drawing

110: information input unit 120: first control unit

130: horizontal line search unit 140: information insertion unit

150: video signal recording unit 210: video signal playback unit

220: information extraction unit 230: second control unit

240: video signal synthesizing unit 250: video display unit

A feature of the information recording apparatus according to the present invention for achieving the above object is information input means for inputting information for recording desired information in a video signal to be recorded, and a video signal for recording information of the information input means. First control means for converting the data into a horizontal line in the vertical blanking interval section of the video signal, and within the vertical blank interval section of the video signal to be recorded for recording the converted data according to the control signal of the first control means. Horizontal line search means for searching a horizontal line, information insertion means for inserting the converted information into a horizontal line searched by the horizontal line search means and synthesizing it with a video signal to be recorded according to a control signal of the first control means; And video signal recording means for recording the synthesized video signal of the information insertion means on a recording medium.

A feature of the information reproducing apparatus according to the present invention for achieving the above object is information extracting means for extracting previously recorded information from a video to be reproduced, and the information extracted from the information extracting unit to the corresponding image information. And a second control means for converting, a video signal synthesizing means for synthesizing the image information and the reproduced video converted by the second control means, and a video display means for reproducing the synthesized video of the video signal synthesizing means.

A feature of the information recording method according to the present invention for achieving the above object is to search whether there is information input from the information input unit, to convert the input data into the form of data (Data) for recording and convert the converted data vertically The horizontal lines in the blank interval section are selected for recording on the recording medium.

A feature of the information reproducing method according to the present invention for achieving the above object is a signal for searching whether there is previously recorded information in a video signal reproduced from a recording medium and synthesizing the retrieved information into a reproduced video signal. After the conversion, the converted signal and the video signal are synthesized and reproduced.

Hereinafter, an information recording / reproducing apparatus and a method thereof according to the present invention will be described with reference to the accompanying drawings.

FIG. 2 is an output waveform diagram of a vertical blanking interval, FIG. 3 is a waveform diagram of recording 16 bits in one vertical line (H line) of the vertical blanking interval, and FIG. 4 is an information recording apparatus according to the present invention. As a block diagram, an information input unit 110 for inputting information for recording information desired by a user in a video signal to be recorded, and a horizontal line in a vertical blanking interval section of the video signal for recording information of the information input unit 110. Search for a horizontal line in a vertical blank interval section of a video signal to be recorded in order to record the converted data according to a control signal of the first control unit 120 and the first control unit 120 for converting the data to be recorded on A video signal to be recorded by inserting the converted information into the horizontal line searched by the horizontal line searcher 130 and the horizontal line searched by the horizontal line searcher 130 according to a control signal of the first controller 120. And an information signal recording unit 150 for recording the synthesized video signal of the information insertion unit 140 on a tape (not shown) or a disc (not shown).

5 is a flowchart of FIG. 4.

6 is a block diagram of an information reproducing apparatus according to the present invention, in which a video signal reproducing unit 210 for reproducing a video signal recorded on a recording medium and previously recorded in a reproduced video of the video signal reproducing unit 210 are shown. An information extracting unit 220 for extracting information, a second control unit 230 for converting the information extracted by the information extracting unit 220 into image information corresponding thereto, and a conversion of the second control unit 230. And a video display synthesizing unit 240 for synthesizing the image information and the reproduced video, and a video display unit 250 for reproducing the synthesized video of the video signal synthesizing unit 240.

7 is a flowchart of FIG. 6, and FIG. 8 is an exemplary view of a playback screen of FIG. 6.

The information recording / reproducing apparatus and method thereof according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, when the video signal to be recorded is input, the first controller 120 searches whether the information is input from the information input unit 110 (S1).

That is, when the user inputs the desired information through the information input unit 110 to record the desired information in the video signal to be recorded, the first control unit 120 transmits the input information within the vertical blanking interval. The data is converted into data for writing on a horizontal line (H-line) and outputted (S2).

Here, the vertical blanking interval section is composed of 21 horizontal lines (H-line), and the 21 horizontal lines (H-line) are equalization pulse sections and 3 horizontal lines of 3 horizontal lines (H-line). It consists of a vertical synchronization period of (H-line), an equalization pulse section of 3 horizontal lines (H-line), and a section capable of recording information of 12 horizontal lines (H-line).

An embodiment in which 16 bits (b0 to b15) of information is recorded in one horizontal line H-line among the information recording sections is shown in FIG.

Then, the horizontal line search unit 130 searches for the horizontal line in the vertical blanking interval section of the video signal to be recorded as shown in FIG. 2 according to the control signal of the first control unit 120 and converts the horizontal line. A section in which the recorded data can be recorded is selected (S3).

Accordingly, the information inserting unit 140 inserts the data converted by the first control unit 120 into the horizontal line searched by the horizontal line searching unit 130 and synthesizes the video signal to be recorded (S4).

Then, the video signal recording unit 150 records the synthesized video signal of the information insertion unit 140 on a tape (not shown) or a disk (not shown) (S5).

For example, the user manipulates the information input unit 110 to record the information as described below in the video signal to be recorded as shown in FIG.

May 5, 1997 Sunny

The day my family goes on a picnic to Seoul Grand Park

It was a long time out and everyone was happy.

The wind was blowing but the weather was very good and it was a nice day.

Then, the first control unit 120 converts the data into data Data to be recorded on the horizontal line H-line in the vertical blanking interval.

Then, the horizontal line search unit 130 searches for the horizontal line in the vertical blanking interval section of the video signal to be recorded as shown in FIG. 2 according to the control signal of the first control unit 120 and converts the horizontal line. Select the section in which recorded data can be recorded.

Accordingly, the information inserting unit 140 converts the data converted by the first control unit 120 into the horizontal blanking interval of the vertical blanking interval of the video signal to be recorded, which is searched by the horizontal line searching unit 130. The data converted by the first control unit 120 is inserted into the synthesized video signal to be recorded and output.

That is, the information inserting unit 140 inserts the data converted by the first control unit 120 into a horizontal line in the vertical blanking interval of the video signal as shown in FIG. 8 to record the video signal. Synthesize and output.

Then, the video signal recording unit 150 records the synthesized video signal of the information insertion unit 140 on a tape (not shown) or a disk (not shown).

Thereafter, the first controller 120 repeats the information input through the information input unit 110 through the processes S1 to S5 as described above, and the horizontal line in the vertical blanking interval of the video signal to be recorded. To record.

In this way, the user can immediately obtain the pre-recorded information at any part of playback of the recorded video signal.

Next, the information reproducing apparatus and method thereof according to the present invention will be described.

First, the video signal reproducing unit 210 reproduces the video signal recorded on the recording medium.

Then, the information extracting unit 220 searches whether there is already recorded information in the reproduced image of the image signal reproducing unit 210 (ST1).

That is, the information extracting unit 220 searches for a horizontal line in a vertical blanking interval section of the reproduced image output from the image signal reproducing unit 210 and extracts and outputs the recorded information if there is already recorded information. .

Accordingly, the second control unit 230 converts the information extracted by the information extraction unit 220 into image information corresponding thereto and outputs it (ST2).

The video signal synthesizing unit 240 synthesizes and outputs the image information converted by the second control unit 230 and the reproduced video (ST3).

Accordingly, the video display unit 250 reproduces the video screen as shown in FIG. 8 according to the composite video of the video signal synthesizing unit 240 (ST4).

As described above, the information recording / reproducing apparatus and method thereof according to the present invention encode any information desired by a user when recording a composite video signal and insert it into a vertical blanking interval section of the signal. Then, when the recorded video signal is reproduced, the information recorded together can be decoded and used, whereby the recorded information can be immediately seen when the video signal is recorded.

In addition, since the present invention can record a variety of information desired by the user, there is an effect that it is very convenient to know what the image is when storing and storing the image signal.

Claims (4)

Information input means for inputting information for recording desired information in a video signal to be recorded; First control means for converting information of the information input means into data for recording on a horizontal line in a vertical blanking interval section of a video signal to be recorded; Horizontal line searching means for searching for a horizontal line in a vertical blank interval of a video signal to be recorded in order to record the converted data according to a control signal of the first control means; Information insertion means for inserting the converted information into a horizontal line searched by the horizontal line search means and synthesizing it with a video signal to be recorded according to the control signal of the first control means; And information signal recording means for recording the synthesized video signal of the information insertion means on a recording medium. Information extraction means for extracting previously recorded information from the reproduced video; Second control means for converting the information extracted by the information extraction unit into image information corresponding thereto; Video signal synthesizing means for synthesizing the image information converted from the second control means with the reproduced video; And information display means for reproducing the synthesized video of the video signal synthesizing means. Retrieving whether there is information inputted from the information input unit and converting the information into data for recording the input information; Selecting and recording the converted data in a horizontal line in a vertical blank interval; And recording the recorded information and the image information on a recording medium. Searching whether there is already recorded information in the video signal reproduced from the recording medium; Converting the retrieved information into a signal for combining with the reproduced video signal; And synthesizing and converting the converted signal and the video signal.