JPH09214888A - Video signal recording device and video signal reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the efficiency of a recording medium by replacing data at a prescribed position in compressed data with additional information generated by an additional information generating means. SOLUTION: 422-Sets of digital video signals are divided into two 222-sets of digital video signals by a video signal divider 1001. Furthermore, an additional information generator 101 generates prescribed additional information. A video signal converter 1002 adds prescribed dummy signals to a luminance signal in the 211-sets of the digital video signals to convert the signals into 411-sets of digital video signals. A high efficiency coder 1003 provides an output of compression data resulting from applying high efficiency coding to the received 411-sets of the digital video signals. A data replacement device 102 replaces the additional information generated from the additional information generator 101 with data in a prescribed area of the compressed data and provides an output of the result. An error correction coder 1004 provides an output of error correction coded formed by adding a prescribed error correction code to the compressed data. Then a recorder 1005 records the error correction coded data to a prescribed area of a recording medium 1006.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal recording device for recording a video signal and a video signal reproducing device for reproducing the same.

[0002]

2. Description of the Related Art In recent years, many video signal recording apparatuses have been developed for digitally recording data obtained by compressing information of a digital video signal by using a predetermined compression. However, standardization of compression methods and hardware compression algorithms (such as LSI)
Since a huge amount of money and labor are required, a new video signal recording device has been developed with a small modification by using an existing standard and a compression algorithm already hardened.

A conventional video signal recording device and video signal reproducing device will be described below. FIG. 9 is a block diagram of a conventional video signal recording device. Reference numeral 1001 denotes a 422 digital video signal in which a luminance signal and a color difference signal are formed in a ratio of 4: 2: 2, and a luminance signal and a color difference signal are formed in a ratio of 2: 1: 1 with respect to an input signal based on a predetermined division format. A video signal divider 1002 that divides into two 211 digital video signals adds a predetermined dummy signal to the brightness signal in the input 211 digital video signal, and the brightness signal and the color difference signal are 4: 1: 1 411 digital. A video signal converter for converting to a video signal, 1003 is a high efficiency encoder for encoding the input 411 digital video signal with a predetermined high efficiency to create compressed data, and 1004 is a predetermined error correction code for the compressed data. Error correction encoder for adding data, 10
Reference numeral 05 denotes a recorder for recording the error correction encoder 1004, 1
Reference numeral 006 is a recording medium.

The operation of the video signal recording apparatus configured as described above will be described. For a 422 digital video signal in which a luminance signal and a color difference signal, which are input signals, are composed of 4: 2: 2, a luminance signal and a color difference signal are input to the input signal by a video signal divider 1001 based on a predetermined division format. It is divided into two 211 digital video signals composed of: 1: 1.

The video signal converter 1002 adds a predetermined dummy signal to the luminance signal in the 211 digital video signal,
It is converted into a 411 digital video signal in which the luminance signal and the color difference signal are 4: 1: 1. Here, an example of this conversion will be described. 211 The data sequence of the digital video signal is the order of the luminance signal (Y), the luminance signal (Y), the color difference signal (V), and the color difference signal (U), which are the luminance signal (Y) and the dummy signal (D). ), A luminance signal (Y), a dummy signal (D), a color difference signal (V), and a color difference signal (U) in that order. This dummy signal (D) is
Same data.

The high-efficiency encoder 1003 receives the input 4
11 The digital video signal is highly efficient coded using a predetermined highly efficient coding algorithm, and compressed data is output. Here, an example of the format of the compressed data will be described with reference to FIG. The high-efficiency encoder 1003 originally performs high-efficiency encoding of the 411 digital video signal by an algorithm using DCT conversion, and a DCT block composed of 8 × 8 pixels of horizontal and vertical 8 pixels is a luminance signal (Y ) Is 4
A macro block is a set of one color difference signal (V) and one color difference signal (U). The compressed data of this macroblock is arranged as shown in FIG.
Each DCT block has a DC component at the beginning, ancillary information data after that, and AC components at other portions.
However, in the conventional video signal recording apparatus, since the dummy signal is used, the DCT blocks are arranged as shown in FIG. 10 (b). The block of the dummy signal (D) is a code E for notifying the end of the block after the predetermined DC component at the beginning of the block, the additional information data after that.
OB (End Of Block) is lined up.

The error correction encoder 1004 outputs error correction encoded data obtained by adding a predetermined error correction code to the input compressed data.

The recorder 1005 is a predetermined recording medium 1
The error correction coded data is recorded at a predetermined position of 006.

FIG. 11 is a block diagram of a conventional video signal reproducing apparatus. Reference numeral 1006 denotes a recording medium recorded by the above conventional video signal recording apparatus, and 2001 denotes a recording medium 10.
A regenerator for regenerating the error correction coded data from 06, 20
Reference numeral 02 denotes an error correction decoder that performs error correction based on the error correction code added by the video signal recording device and outputs compressed data. Reference numeral 2003 denotes the inverse of the high efficiency coding performed by the video signal recording device. A high-efficiency decoder that performs the conversion of the above to decode a digital video signal, and 2004 is the above-mentioned video in the 411 digital video signal in which the luminance signal and the color difference signal decoded by the high-efficiency decoder 2003 are 4: 1: 1 A video signal separator that separates the dummy signal added by the signal recording device and outputs a 211 digital video signal in which the luminance signal and the color difference signal are configured in a 2: 1: 1 ratio with respect to the input signal,
Reference numeral 2005 is a video signal combination that combines the 211 digital video signals output from the two video signal separators 2004 into a 422 digital video signal in which a luminance signal and a color difference signal are configured in a 4: 2: 2 based on a predetermined synthesis format. vessel.

The operation of the video signal reproducing apparatus configured as described above will be described. The reproducer 2001 reproduces the error correction coded data recorded at a predetermined position in the recording medium 1006. Error correction decoder 200
2 performs error correction based on the error correction code added by the video signal recording device and outputs compressed data. The high-efficiency decoder 2003 performs the reverse conversion of the high-efficiency encoding performed by the video signal recording device to the compressed data, decodes the digital video signal, and outputs the 411 digital video signal. The video signal separator 2004 is a high-efficiency decoder 200.
The dummy signal added by the video signal recording device in the 411 digital video signal decoded in 3 is separated and the luminance signal and the color difference signal output the 211 digital video signal. The video signal synthesizer 2005 includes two video signal separators 2004.
The 211 digital video signal which is the output of the above is synthesized into a 422 digital video signal based on a predetermined synthesis format and outputted.

[0011]

However, in the conventional video signal recording apparatus, since the compressed data already compressed using the hardened compression algorithm is recorded, there is a predetermined empty area in the recording medium. Therefore, there is a problem that the efficiency is low. That is, the portion in which the dummy signal is recorded is an empty area.

A video signal recording device and a video signal reproducing device of the present invention solve the above problems by recording additional information and a video signal other than an effective area in a recording medium of a conventional video signal recording device. An object of the present invention is to provide a video signal recording device in which the use efficiency of a recording medium is improved by increasing the amount of information recorded, and a video signal reproducing device for reproducing this recording medium.

[0013]

In order to achieve the above object, a video signal recording apparatus according to a first aspect of the present invention comprises an effective area dividing means for dividing an effective area from a digital image signal, and additional information. Additional information generating means for generating, video signal adding means for adding an additional signal to the video signal in the effective area, and compression means for generating compressed data by performing predetermined high efficiency encoding of the video signal to which the additional signal is added. And a data replacement unit that replaces data at a predetermined position in the compressed data with the additional information generated by the additional information generation unit,
Recording means for recording the compressed data replaced by the data replacing means on a predetermined recording medium.

The video signal recording apparatus according to a second aspect records a digital video signal outside the effective area as additional information, and the video signal recording apparatus according to the second aspect of the invention is effective from the digital video signal. Effective area dividing means for dividing an area, additional information generating means for generating additional information, and additional information compressing means for generating compressed data by performing predetermined high efficiency encoding of the additional information generated by the additional information generating means. A video signal adding means for adding an additional signal to the video signal in the effective area; a compression means for performing a predetermined high efficiency encoding of the video signal added with the additional signal to create compressed data; A data replacement means for replacing the data at a predetermined position with the data compressed by the additional information compression means, and the compressed data replaced by the data replacement means for a predetermined recording medium. In which and recording means for recording.

The video signal recording apparatus according to a fourth aspect records a digital video signal outside the effective area as additional information, and the video signal recording apparatus according to the third aspect of the invention is effective from the digital video signal. Effective area dividing means for dividing the area, additional information generating means for generating additional information, and video signal adding means for adding the additional information generated by the additional information generating means to a predetermined position of the video signal of the effective area. When,
The video signal of the effective area, to which the additional information is added, is provided with a compression means for performing predetermined high efficiency encoding to create compressed data, and a recording means for recording the compressed data on a predetermined recording medium. .

According to a sixth aspect of the present invention, there is provided a video signal recording apparatus for recording a digital video signal outside the effective area as additional information.

According to a fourth aspect of the present invention, there is provided a video signal recording apparatus, which comprises: an effective area dividing means for dividing an effective area from a digital video signal; and an additional information generating means for generating additional information.
Additional information compression means for compressing the additional information generated by the additional information generation means to a predetermined high efficiency to generate compressed data, and compressed data generated by the additional information compression means for a predetermined video signal in the effective area. Video signal adding means for adding the compressed data to the position, compression means for creating compressed data by performing predetermined high efficiency encoding of the video signal of the effective area to which the compressed data is added, and the compressed data for a predetermined recording medium. And recording means for recording.

The video signal recording apparatus according to the present invention records a digital video signal outside the effective area as additional information.

According to a ninth aspect of the present invention, there is provided a video signal reproducing apparatus which comprises reproducing means for reproducing compressed data recorded on a predetermined recording medium and inverse conversion of the compressed data by predetermined high efficiency coding. Decoding means for decoding and outputting a digital video signal, area dividing means for dividing the digital video signal into a predetermined effective area and additional information, and effective areas divided by the area dividing means in a predetermined order. And a means for recognizing the additional information divided by the area dividing means by a predetermined method.

According to a tenth aspect of the present invention, there is provided a video signal reproducing apparatus for reproducing a digital video signal outside the effective area as additional information.

According to a sixth aspect of the present invention, there is provided a video signal reproducing apparatus which comprises reproducing means for reproducing compressed data recorded on a predetermined recording medium, and inverse conversion of the compressed data by predetermined high efficiency coding. Decoding means for decoding and outputting a digital video signal, area dividing means for dividing the digital video signal into a predetermined effective area and a predetermined additional area,
A video signal rearranging means for rearranging the digital video signals of the effective area and the additional area divided by the area dividing means in a predetermined order is provided.

According to the twelfth aspect of the present invention, the video signal reproducing apparatus reproduces the digital video signal outside the effective area as additional information.

According to a seventh aspect of the present invention, there is provided a video signal recording apparatus in which an effective area dividing means for dividing an effective area from a digital video signal, additional information generating means for generating additional information, and the digital video signal are adjacent to each other. A compression means for creating a compressed data by performing a predetermined high-efficiency encoding performed in a block unit in which a plurality of pixels made up of pixels are combined, and additional information in the compressed data and an end codeword of a block used in the high-efficiency encoding. And a recording means for recording the compressed data on a predetermined recording medium.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) The device configuration of the video signal recording apparatus of the first invention is as shown in FIG.

In FIG. 1, reference numeral 1001 denotes a 422 digital video signal in which a luminance signal and a color difference signal are 4: 2: 2 based on a predetermined division format, and the luminance signal and the color difference signal are 2: 1 with respect to the input signal. 2 composed of 1
A video signal divider for dividing into two 211 digital video signals, 101 is an additional information generator for generating additional information, 10
Reference numeral 02 is a video signal converter for adding a predetermined dummy signal to the luminance signal in the inputted 211 digital video signal to convert it into a 411 digital video signal in which the luminance signal and the color difference signal are 4: 1: 1. A high-efficiency encoder that creates compressed data by performing predetermined high-efficiency encoding on the generated 411 digital video signal, and 102 replaces data at a predetermined position in the compressed data with data output from the additional information generator 101. A data replacer 1004 is an error correction encoder for adding a predetermined error correction code data to the compressed data, 1
Reference numeral 005 is a recorder for recording the error correction code data output from the error correction encoder 1004, and 1006 is a recording medium.

The operation of the video signal recording apparatus configured as described above will be described. For a 422 digital video signal in which a luminance signal and a color difference signal, which are input signals, are composed of 4: 2: 2, a luminance signal and a color difference signal are input to the input signal by a video signal divider 1001 based on a predetermined division format. It is divided into two 211 digital video signals composed of: 1: 1.

Further, the additional information generator 101 generates predetermined additional information. The video signal converter 1002 includes 211
A predetermined dummy signal is added to the luminance signal in the digital video signal to convert it into a 411 digital video signal.

Here, an example of this conversion will be described. 211 The data sequence of the digital video signal is the order of the luminance signal (Y), the luminance signal (Y), the color difference signal (V), and the color difference signal (U), which are the luminance signal (Y) and the dummy signal (D). ), A luminance signal (Y), a dummy signal (D), a color difference signal (V), and a color difference signal (U) in that order. This dummy signal (D) is
Same data.

The high-efficiency encoder 1003 receives the input 4
11 The digital video signal is highly efficient coded using a predetermined highly efficient coding algorithm, and compressed data is output.

Here, an example of the format of the compressed data will be described with reference to FIG. High efficiency encoder 1003
Is originally a high-efficiency encoding of a 411 digital video signal with an algorithm using DCT conversion. A DCT block composed of 8 × 8 pixels of horizontal and vertical 8 pixels has four luminance signals (Y) and color difference. A set composed of one signal (V) and one color difference signal (U) is defined as a macroblock.

The compressed data of this macroblock is shown in FIG.
They are arranged as shown in (a), and DC is placed at the beginning of each DCT block.
Component, then auxiliary information data, AC for other parts
The ingredients are lined up. However, in the conventional video signal recording apparatus, since the dummy signal is used, the DCT blocks are arranged as shown in FIG. 10 (b). In the block of the dummy signal (D), a predetermined DC component is arranged at the head of the block, ancillary information data is arranged thereafter, and EOB (End Of Block), which is a code indicating the end of the block, is arranged behind it.

The data replacer 102 is the additional information generator 1
The additional information generated in 01 is replaced with the data in a predetermined area in the compressed data and output. Here, an example of the replacement method will be described with reference to FIG. The additional information is the DC component data or DC in the dummy signal recording area shown in FIG.
Replace the component data and attached information data with the combined part.

The error correction encoder 1004 outputs error correction encoded data obtained by adding a predetermined error correction code to the input compressed data.

The recorder 1005 is used for the predetermined recording medium 1
The error correction coded data is recorded at a predetermined position of 006.

As described above, in this embodiment, by adding the additional information generator 101 and the data replacer 102, more information can be recorded than the conventional video signal recording apparatus.

The additional information is input to the input signal 422.
The video signal recording apparatus according to claim 2 uses the digital video signal other than the effective area in the digital video signal.

(Embodiment 2) The equipment configuration of the video signal recording apparatus of the second invention is as shown in FIG.

In FIG. 2, components having the same numbers as those in FIG. 1 are the same devices, and the description thereof will be omitted. Reference numeral 201 denotes a high-efficiency encoder that outputs compressed data obtained by highly-efficiently encoding the additional information generated by the additional information generator 101 using a predetermined high-efficiency encoding algorithm.

The operation of the video signal recording apparatus configured as described above will be described. Also, in FIG.
Those having the same numbers as those in FIG. 1 perform the same operations, and thus description thereof will be omitted.

The high-efficiency encoder 201 outputs the compressed data obtained by highly-efficiently encoding the pixel data of the additional area temporarily stored in the additional information generator 101 using a predetermined high-efficiency encoding algorithm. The data replacing unit 102 replaces the compressed data generated by the high efficiency encoder 201 with the data in a predetermined area in the compressed data generated by the high efficiency encoder 1003 and outputs the compressed data.

As described above, in this embodiment, the additional information generator 101, the high-efficiency encoder 201, and the data replacer 102 are used.
By adding, it is possible to record more information than the conventional video signal recording device.

The additional information is input signal 422.
The video signal recording apparatus according to claim 4 uses the digital video signal other than the effective area in the digital video signal.

(Embodiment 3) The equipment configuration of the video signal recording apparatus of the third invention is as shown in FIG.

In FIG. 3, components having the same numbers as those in FIG. 1 are the same devices, and the description thereof will be omitted. 301 adds the additional information generated by the additional information generator 101 to the luminance signal in the input 211 digital video signal to obtain 411
It is a video signal converter for converting into a digital video signal.

The operation of the video signal recording apparatus configured as described above will be described. In addition, in FIG.
Those having the same numbers as those in FIG. 1 perform the same operations, and thus description thereof will be omitted.

The video signal converter 301 adds the additional information generated by the additional information generator 101 to the luminance signal in the 211 digital video signal to convert it into a 411 digital video signal.

Here, two examples of this conversion will be described. The first is that the data line of the 211 digital video signal is a luminance signal (Y), a luminance signal (Y), a color difference signal (V),
The order is the color difference signal (U), which is the luminance signal (Y), additional information signal (S), luminance signal (Y), additional information signal (T), color difference signal (V), color difference signal (U). Of 411 digital video signals. At this time, if it is not necessary to add the additional information signal, the dummy signal (D) having the same data is added as in the conventional example.

The second is the order of the luminance signal (Y), the luminance signal (Y), the color difference signal (V), and the color difference signal (U) in the order of the data of the 211 digital video signal. (Y), the additional information signal (S), the luminance signal (Y), the additional information signal (T), the color difference signal (V), and the color difference signal (U). At this time, the additional information signal is supplied to the next high-efficiency encoder 1003 in the horizontal and vertical directions.
When rearranged into a DCT block composed of 8 × 8 pixels, the values in the same DCT block are added to be the same.

As described above, in this embodiment, by adding the additional information generator 101 and changing the video signal converter 301, it is possible to record more information than the conventional video signal recording device.

It should be noted that the additional information is the input signal 422.
The video signal recording device according to claim 6 uses the digital video signal other than the effective area in the digital video signal.

(Embodiment 4) The equipment configuration of the video signal recording apparatus of the fourth invention is as shown in FIG.

In FIG. 4, components having the same numbers as those in FIG. 1 are the same devices, and the description thereof will be omitted. Reference numeral 401 denotes a high-efficiency encoder that outputs compressed data obtained by highly-efficiently encoding the additional information generated by the additional information generator 101 using a predetermined high-efficiency encoding algorithm, and 402 denotes an input 211 digital image. By adding the compressed data that has been encoded by the high efficiency encoder 401 to the luminance signal in the signal,
It is a video signal converter for converting into one digital video signal.

The operation of the video signal recording apparatus configured as described above will be described. Also, in FIG.
Those having the same numbers as those in FIG. 1 perform the same operations, and thus description thereof will be omitted.

The high-efficiency encoder 401 outputs the compressed data in which the additional information generated by the additional information generator 101 is high-efficiency-encoded using a predetermined high-efficiency encoding algorithm. The video signal converter 402 is a high-efficiency encoder 4
The high-efficiency-coded compressed data in 01 is added to the luminance signal in the 211 digital video signal and converted into a 411 digital video signal.

Now, two examples of this conversion will be described. The first is that the data line of the 211 digital video signal is a luminance signal (Y), a luminance signal (Y), a color difference signal (V),
The order is the color difference signal (U), which is the luminance signal (Y), additional information compression signal (C), luminance signal (Y), additional information compression signal (D), color difference signal (V), color difference signal ( U), which is the order of 411 digital video signals. At this time, if it is not necessary to add the additional information compression signal, the dummy signal (D) having the same data is used as in the conventional example.
Add.

The second is the order of the luminance signal (Y), the luminance signal (Y), the color difference signal (V), and the color difference signal (U) in the order of the 211 digital video signal data. (Y), additional information compression signal (C), luminance signal (Y), additional information compression signal (D), color difference signal (V), color difference signal (U
) Digital video signal which is the order of).
At this time, the additional information compression signal is the next high efficiency encoder 10
03, DCT composed of 8 × 8 pixels of horizontal and vertical 8 pixels
When rearranged into blocks, the values in the same DCT block are added so that they are all the same.

As described above, in this embodiment, by adding the additional information generator 101 and the high-efficiency encoder 401 and changing the video signal converter 402, more information can be obtained than in the conventional video signal recording apparatus. Can be recorded.

The additional information is input to the input signal 422.
The video signal recording apparatus according to claim 8 uses the digital video signal other than the effective area in the digital video signal.

(Embodiment 5) The equipment configuration of the video signal reproducing apparatus of the fifth invention is as shown in FIG.

In FIG. 5, reference numeral 1006 denotes a recording medium recorded by the video signal recording apparatus of the first and third embodiments, and 2
Reference numeral 001 is a reproducer for reproducing error correction coded data from the recording medium 1006, and 2002 is an error correction decoder for performing error correction based on the error correction code added by the video signal recording apparatus and outputting compressed data. Reference numeral 2003 denotes a high-efficiency decoder that decodes a digital video signal by performing the inverse conversion of the high-efficiency encoding performed by the video signal recording apparatus, and 501 denotes a 411 digital video decoded by the high-efficiency decoder 2003. A video signal separator for separating the effective area and the additional information added by the above-mentioned video signal recording device from the signal and outputting the additional information as it is as the digital video signal of the effective area is a 211 digital video signal.
A video signal synthesizer for synthesizing the 211 digital video signals output from the two video signal separators 2004 into 422 digital video signals based on a predetermined synthesis format and outputting the 422 digital video signals.
Reference numeral 02 denotes an additional information synthesizer that obtains necessary information by synthesizing the additional information output from the two video signal separators 2004 based on a predetermined synthesizing format.

The operation of the video signal reproducing apparatus configured as described above will be described. The reproducer 2001 reproduces the error correction coded data recorded at a predetermined position in the recording medium 1006.

The error correction decoder 2002 performs error correction based on the error correction code added by the video signal recording device and outputs compressed data.

The high-efficiency decoder 2003 performs a reverse conversion of the high-efficiency encoding performed by the video signal recording device to the compressed data, decodes the digital video signal, and outputs a 411 digital video signal.

The video signal separator 501 is a high efficiency decoder 2
The 411 digital video signal decoded in 003 is separated into the effective area and the additional information added by the video signal recording device, and the digital video signal in the effective area is output as the 211 digital video signal, and the additional information is output as it is. To do.

The video signal synthesizer 2005 synthesizes the 211 digital video signals in the effective area, which are the outputs of the two video signal separators 501, into a 422 digital video signal based on a predetermined synthesis format, and outputs it.

The additional information synthesizer 502 synthesizes the additional information output from the two video signal separators 501 based on a predetermined synthesis format to obtain necessary information.

As described above, in this embodiment, by adding the additional information synthesizer 502 and changing the video signal converter 501, the video signals recorded by the video signal recording apparatus of the first and third embodiments are recorded. Can be played.

When the additional information is a digital video signal other than the effective area in the 422 digital video signal, the additional information synthesizer 502 outputs the digital video signal other than the effective area to synthesize the video signals. The 422 digital video signal is reproduced by combining with the output of the device 2005. This is the video signal reproducing apparatus of claim 10.

(Embodiment 6) The equipment configuration of the video signal reproducing apparatus of the sixth invention is as shown in FIG.

In FIG. 6, reference numeral 1006 denotes a recording medium recorded by the video signal recording apparatus of the second and fourth embodiments, and other components having the same numbers as those in FIG.

A high-efficiency decoder 602 decodes the additional information by converting the compressed data of the additional information, which is the output of the video signal separator 501, by the inverse conversion of the predetermined high-efficiency encoding.

The operation of the video signal reproducing apparatus configured as described above will be described. Video signal separator 501
Separates the 411 digital video signal decoded by the high-efficiency decoder 2003 into the effective area and the compressed data of the additional information added by the above-mentioned video signal recording device, and the effective area digital video signal is the 211 digital video signal. Output as
The compressed data of the additional information is output as it is.

The high-efficiency decoder 602 performs the inverse conversion of the predetermined high-efficiency coding on the compressed data of the additional information, decodes the additional information, and outputs it.

As described above, in this embodiment, by adding the high-efficiency encoder 601 and the additional information synthesizer 502 and changing the video signal converter 501, the video signal recording of the second and fourth embodiments is performed. The video signal recorded by the device can be reproduced.

When the additional information is a digital video signal other than the effective area in the 422 digital video signal, the additional information synthesizer 502 outputs the digital video signal other than the effective area to synthesize the video signals. The 422 digital video signal is reproduced by combining with the output of the device 2005. This is the video signal reproducing apparatus according to claim 12.

(Embodiment 7) The equipment configuration of the video signal recording apparatus of the seventh invention is as shown in FIG.

In FIG. 7, the same reference numerals as those in FIG. 1 are the same devices, and the description thereof will be omitted. Reference numeral 701 denotes a predetermined high-efficiency encoding of the input 411 digital video signal to create compressed data, and addition of the additional information and the end code word of the block used in the high-efficiency encoding in the compressed data. It is a high-efficiency encoder capable of inserting information blocks.

The operation of the video signal recording device configured as described above will be described. In addition, in FIG.
Those having the same numbers as those in FIG. 1 perform the same operations, and thus description thereof will be omitted.

The high efficiency encoder 701 receives the input 411
The digital video signal can be encoded with a predetermined high efficiency to create compressed data, and the additional information and the additional information block composed of EOB can be inserted into the compressed data. Here, an example of the insertion compression code of the additional information block will be described. FIG. 8A shows the structure of a macro block of a conventional video signal recording device. (Same as Figure 10 (b))
FIG. 8B shows a part of the compressed code in which the additional information block is inserted, the block indicated by J is the additional information block, and as shown in the figure, is composed of only the additional information data and EOB. .

As described above, in the present embodiment, by adding the additional information generator 101 and changing the high-efficiency encoder 701, the compression in which the additional information block which can be reproduced by the conventional video signal reproducing apparatus is inserted is inserted. Data can be generated.

Although the apparatus has been described in all the embodiments, the processing for obtaining the same result may be performed by software. Although error correction encoding or error correction decoding is performed in all the embodiments, this need not be performed.

[Brief description of drawings]

FIG. 1 is a block diagram of a video signal recording device according to a first invention of the present invention.

FIG. 2 is a block diagram of a video signal recording device according to a second invention of the present invention.

FIG. 3 is a block diagram of a video signal recording device according to a third invention of the present invention.

FIG. 4 is a block diagram of a video signal recording device according to a fourth invention of the present invention.

FIG. 5 is a block diagram of a video signal reproducing device according to a fifth invention of the present invention.

FIG. 6 is a block diagram of a video signal reproducing device according to a sixth invention of the present invention.

FIG. 7 is a block diagram of a video signal recording device according to a seventh invention of the present invention.

FIG. 8 is a diagram illustrating an example of a format of a compressed code according to the present invention.

FIG. 9 is a block diagram of a conventional video signal recording device.

FIG. 10 is a diagram illustrating an example of a format of a conventional compressed code.

FIG. 11 is a block diagram of a conventional video signal reproducing device.

[Explanation of symbols]

 101 additional information generator 102 data replacer 1001 video signal divider 301, 402, 1002 video signal converter 201, 401, 701, 1003 high efficiency encoder 1004 error correction encoder 1005 recorder 1006 recording medium 2001 player 2002 Error correction decoder 601, 2003 High efficiency decoder 501, 2004 Video signal separator 2005 Video signal synthesizer 502 Additional information synthesizer

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuji Fujiwara 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (13)

[Claims] 1. An effective area dividing means for dividing an effective area from a digital video signal, additional information generating means for generating additional information, video signal adding means for adding an additional signal to the video signal of the effective area, and Compression means for generating compressed data by predetermined high-efficiency encoding the video signal added with the additional signal; and data at a predetermined position in the compressed data,
A video comprising: a data replacement unit that replaces the additional information generated by the additional information generation unit; and a recording unit that records the compressed data replaced by the data replacement unit on a predetermined recording medium. Signal recorder. 2. An effective area dividing means for dividing an effective area from a digital video signal, an additional area dividing means for dividing and temporarily storing an additional area in a portion other than the effective area from the digital video signal, and the effective area. Video signal adding means for adding an additional signal to the video signal, compression means for creating compressed data by performing predetermined high-efficiency encoding of the video signal to which the additional signal has been added, and a predetermined position in the compressed data. Data replacement means for replacing the data with the video signal of the additional area temporarily stored in the additional area dividing means, and recording means for recording the compressed data replaced by the data replacement means on a predetermined recording medium. A video signal recording device characterized by the above. 3. An effective area dividing means for dividing an effective area from a digital video signal, an additional information generating means for generating additional information, and a predetermined high efficiency encoding of the additional information generated by the additional information generating means. Additional information compression means for creating compressed data, video signal adding means for adding an additional signal to the video signal in the effective area, and predetermined high efficiency coding of the video signal to which the additional signal is added to create compressed data Compressing means, a data replacing means for replacing the data at a predetermined position in the compressed data with the data compressed by the additional information compressing means, and a predetermined recording of the compressed data replaced by the data replacing means. A video signal recording device comprising: a recording unit for recording on a medium. 4. An effective area dividing means for dividing an effective area from a digital video signal, an additional area dividing means for dividing and temporarily storing an additional area in a portion other than the effective area from the digital video signal, and the additional area. An additional area compression means for creating a compressed data by encoding a video signal of the additional area temporarily stored in the dividing means with a predetermined high efficiency; a video signal adding means for adding the additional signal to the video signal of the effective area; Compressing means for creating compressed data by performing predetermined high-efficiency encoding of the video signal added with the additional signal, and data at a predetermined position in the compressed data is replaced with data compressed by the additional area compressing means. A video signal recording apparatus comprising: a data replacing means; and a recording means for recording the compressed data replaced by the data replacing means on a predetermined recording medium. 5. An effective area dividing means for dividing an effective area from a digital video signal, additional information generating means for generating additional information, and additional information generated by the additional information generating means for converting the effective area of the video signal of the effective area. Video signal adding means for adding at a predetermined position, compression means for performing high efficiency coding of the video signal in the effective area to which the additional information is added to create compressed data, and recording the compressed data in a predetermined manner. A video signal recording device comprising: a recording unit for recording on a medium. 6. An effective area dividing means for dividing an effective area from a digital video signal, an additional area dividing means for dividing and temporarily storing an additional area in a portion other than the effective area from the digital video signal, and the additional area. Video signal adding means for adding the video signal of the additional area temporarily stored in the dividing means to a predetermined position of the video signal of the effective area, and predetermined video signal of the effective area to which the video signal of the additional area is added Compression means for creating highly compressed data by high efficiency encoding of
A video signal recording apparatus comprising: a recording unit that records the compressed data in a predetermined recording medium. 7. An effective area dividing means for dividing an effective area from a digital video signal, an additional information generating means for generating additional information, and a predetermined high efficiency encoding of the additional information generated by the additional information generating means. Additional information compression means for creating compressed data, video signal adding means for adding the compressed data created by the additional information compression means to a predetermined position of the video signal in the effective area, and the compressed data added A video signal recording apparatus comprising: a compressing unit that encodes a video signal in an effective area with a predetermined high efficiency to create compressed data; and a recording unit that records the compressed data on a predetermined recording medium. 8. An effective area dividing means for dividing an effective area from a digital video signal, an additional area dividing means for dividing and temporarily storing an additional area in a portion other than the effective area from the digital video signal, and the additional area. Additional area compression means for creating compressed data by encoding a predetermined high efficiency video signal of the additional area temporarily stored in the dividing means, and the compressed data created by the additional area compression means for the effective area video signal. Video signal adding means for adding the video data in a predetermined position, compression means for creating a compressed data by video-encoding the video signal of the effective area added with the compressed data, and recording the compressed data in a predetermined manner. A video signal recording device comprising: a recording unit for recording on a medium. 9. A reproducing means for reproducing compressed data recorded on a predetermined recording medium, and a decoding for decoding the compressed data which is an inverse conversion of a predetermined high efficiency encoding to output a digital video signal. Means, area dividing means for dividing the digital video signal into a predetermined effective area and additional information, video signal rearranging means for rearranging the effective areas divided by the area dividing means in a predetermined order, and the area dividing And a means for recognizing the additional information divided by the means by a predetermined method. 10. A reproducing means for reproducing compressed data recorded on a predetermined recording medium, and a decoding for decoding the compressed data which is an inverse conversion of a predetermined high efficiency encoding to output a digital video signal. Means, area dividing means for dividing the digital video signal into a predetermined effective area and a predetermined additional area, and video for rearranging the digital video signals of the effective area and the additional area divided by the area dividing means in a predetermined order. A video signal reproducing apparatus comprising a signal rearranging means. 11. A reproducing means for reproducing compressed data recorded on a predetermined recording medium, and a decoding means for decoding the compressed data which is an inverse conversion of a predetermined high efficiency encoding and outputting a digital signal. An area dividing means for dividing the digital signal into a digital video signal of a predetermined effective area and a digital signal of additional information; and a digital signal of the additional information divided by the area dividing means, which is the inverse of a predetermined high efficiency encoding. Additional information decoding means for performing decoding, which is conversion, and video signal rearranging means for rearranging the digital video signals of the effective area divided by the area dividing means in a predetermined order,
A video signal reproducing apparatus comprising: means for recognizing the additional information decoded by the additional information decoding means by a predetermined method. 12. A reproducing means for reproducing compressed data recorded on a predetermined recording medium, and a decoding means for decoding the compressed data which is an inverse conversion of a predetermined high efficiency encoding and outputting a digital signal. Area dividing means for dividing the digital signal into a digital video signal of a predetermined effective area and a digital signal of a predetermined additional area; and a high efficiency encoding of the digital signal of the additional area divided by the area dividing means. Additional area decoding means for performing decoding, which is the inverse conversion of, and outputting a digital video signal, a digital video signal of the effective area divided by the area dividing means, and a digital image output by the additional area decoding means. A video signal reproducing apparatus comprising video signal rearranging means for rearranging signals in a predetermined order. 13. An effective area dividing means for dividing an effective area from a digital video signal, additional information generating means for generating additional information, and the digital video signal is performed in a block unit in which a plurality of adjacent pixels are collected. Compression means for producing compressed data by predetermined high-efficiency encoding, means for inserting additional information block formed by the additional information and the end codeword of the block used in the high-efficiency encoding into the compressed data, A video signal recording apparatus comprising: a recording unit that records the compressed data in a predetermined recording medium.