JP2865157B2 - High-definition video signal recording device, high-definition video signal reproducing device, and high-definition video signal recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a high-definition video signal recording apparatus, a high-definition video signal reproducing apparatus, and a high-definition video signal recording / reproducing apparatus.

[0002]

2. Description of the Related Art In recent years, Hi-Vision signals (hereinafter referred to as "HD
Signal ". ), A broadband high-definition video signal having a larger number of scanning lines than a conventional video signal such as an EDTV signal is known. For devices that handle high-definition video signals,
Digital processing is often performed, and the dynamic range is strictly limited in digital processing. Therefore, it is important to manage the amplitude level of a signal.

As a method of managing the amplitude level of a video signal, a method of detecting the amplitude level of a synchronization signal and managing the amplitude level of the video signal based on the detection result has been known.

However, in digital processing performed in a device that handles a high-definition video signal, processing is often performed by deleting signals in a vertical blanking period and a horizontal synchronizing signal period in order to save memory and the like. Therefore, there is a problem that accurate level correction is not performed if the level correction of the high definition video signal is performed based on the amplitude level of the synchronization signal. Patent application for a device for adding a level standard signal to a predetermined line of a definition video signal and a Hi-Vision signal to which a level standard signal is added on March 26, 1993 (reference number 405000)
224), and a level correction device for correcting the amplitude level of the high definition video signal based on the level standard signal was filed on March 17, 1993 with a patent application (reference number 40500).
0223).

[0005]

However, in an apparatus for recording and reproducing a high-definition video signal, there are cases where upper and lower lines of the high-definition video signal are deleted and recorded. Since the standard signal is deleted and is not recorded on the recording medium, the amplitude level error generated in the recording / reproducing apparatus itself is reduced even if the recording / reproducing apparatus inputs and corrects the amplitude level by using the above-described level correction apparatus. It cannot be removed. Further, when the information signal is multiplexed in the level standard signal, there is a problem that the information signal is also deleted by deleting the level standard signal.

Therefore, an object of the present invention is to solve such a problem.

[0007]

SUMMARY OF THE INVENTION The present invention provides the following structure to solve the above problems.

[0008] A high-definition video signal recording apparatus for recording an input high-definition video signal in which an input level reference signal representing an amplitude level of a video is interposed in a predetermined line, comprising: Level correcting means for correcting the amplitude level of the input high-definition video signal based on the input level reference signal, and upper and lower lines including the predetermined line relating to the input high-definition video signal are deleted from the output signal of the level correcting means for predetermined recording Recording processing means for performing processing to generate a recording video signal; and recording level reference signal generating means for generating a recording level reference signal based on the input level reference signal, wherein the recording video signal and the recording level reference signal are provided. A high-definition video signal recording apparatus, characterized in that a recording signal obtained by combining at least the above is recorded on a recording medium.

[0009] Recording is performed by synthesizing at least a recording video signal obtained by deleting upper and lower lines of an input high-definition video signal and performing predetermined recording processing, and a recording level reference signal representing an amplitude level of the input high-definition video signal. What is claimed is: 1. A high-definition video signal reproducing apparatus for reproducing a signal from a recording medium, comprising: reproduction processing means for performing a predetermined reproduction process on the reproduced recording video signal to generate a reproduction video signal; Output level reference signal generating means for generating an output level reference signal based on the signal, and outputting an output high definition video signal obtained by inserting the output level reference signal into a predetermined line of the reproduced video signal. High definition video signal playback device.

A high-definition video signal recording / reproducing apparatus for recording / reproducing an input high-definition video signal in which an input level reference signal representing an amplitude level of a video is inserted in a predetermined line, comprising: Level correction means for correcting the amplitude level of the video signal based on the input level reference signal, and removing upper and lower lines including the predetermined line related to the input high definition video signal from the output signal of the level correction means, and Recording processing means for performing a recording process to generate a recording video signal, recording level reference signal generating means for generating a recording level reference signal based on the input level reference signal, the recording video signal and the recording level reference signal Recording / reproducing means for recording / reproducing a recording signal obtained by combining at least a recording signal on a recording medium, and performing a predetermined reproducing process on the reproduced recorded video signal to generate a reproduced video signal. A reproduction processing unit; and an output level reference signal generation unit for generating an output level reference signal based on the reproduced recording level reference signal. The output level reference signal is transmitted to the predetermined line of the reproduced video signal via the output level reference signal. A high-definition video signal reproducing device that outputs an output high-definition video signal obtained by insertion.

An input high-definition video signal in which a level standard signal in which an input level reference signal representing an amplitude level of an image and an input information signal representing predetermined information are multiplexed is inserted into a predetermined line. A high-definition video signal recording apparatus for recording, wherein a level correction means for correcting an amplitude level of the input high-definition video signal based on the input level reference signal,
Recording processing means for deleting upper and lower lines including the predetermined line relating to the input high-definition video signal from an output signal of the level correcting means and performing predetermined recording processing to generate a recording video signal; A recording level reference signal generating means for generating a recording level reference signal based on a reference level of the signal, and replacing the predetermined information obtained by decoding the input information signal with new information as necessary, Recording information signal generating means for generating a recording signal, and recording a recording signal obtained by synthesizing at least the recording video signal, the recording level reference signal, and the recording information signal on a recording medium. High definition video signal recording device.

A recording video signal which has been subjected to a predetermined recording process by deleting upper and lower lines of an input high definition video signal, a recording level reference signal indicating an amplitude level of the input high definition video signal, and recording information indicating predetermined information What is claimed is: 1. A high-definition video signal reproducing apparatus for reproducing a recorded signal obtained by synthesizing at least a signal from a recording medium, said reproducing processing means performing a predetermined reproducing process on the reproduced recorded video signal to generate a reproduced video signal When,
Output level reference signal generating means for generating an output level reference signal based on the reproduced recording level reference signal; and decoding the predetermined information obtained by decoding the reproduced recording information signal into new information as necessary. Output information signal generating means for generating an output information signal by substituting an output level standard signal obtained by multiplexing the output level reference signal and the output information signal into a predetermined line of the reproduced video signal. A high-definition video signal reproducing device for outputting the obtained output high-definition video signal.

An input high-definition video signal in which a level standard signal in which an input level reference signal representing an amplitude level of an image and an input information signal representing predetermined information are multiplexed is inserted into a predetermined line. What is claimed is: 1. A high-definition video signal recording / reproducing apparatus for recording and reproducing, comprising: level correction means for correcting an amplitude level of said input high-definition video signal based on said input level reference signal; Recording processing means for deleting upper and lower lines including the predetermined line from the output signal of the level correction means and performing predetermined recording processing to generate a recorded video signal; and a recording level based on the reference level of the input level reference signal. Recording level reference signal generating means for generating a reference signal; and recording for generating a recording information signal by replacing the predetermined information obtained by decoding the input information signal with new information as necessary. Information signal generating means, recording / reproducing means for recording / reproducing a converted signal obtained by synthesizing at least the recording video signal, the recording level reference signal, and the recording information signal on a recording medium; Playback processing means for performing a playback process of the above, generating a playback video signal, an output level reference signal generation means for generating an output level reference signal based on the played back recording level reference signal, and decoding the playback recorded information signal Output information signal generating means for generating the output information signal by substituting the predetermined information obtained as described above with new information as necessary; and outputting the reproduced video signal, the output level reference signal and the output information signal. A high-definition video signal recording / reproducing apparatus for outputting an output high-definition video signal obtained by combining at least a multiplexed output level standard signal.

[0014]

FIG. 1 is a waveform diagram of a level standard signal, and FIG.
FIG. 3 is a waveform diagram for explaining a line of a level standard signal inserted into a signal, FIG. 3 is a block diagram for explaining a main part of a video signal recording apparatus according to an embodiment of the present invention, and FIG. Flowchart for explaining the operation of
FIG. 5 is a block diagram for explaining a main part of the level correcting means, FIG. 6 is a waveform diagram of a ternary synchronization signal, FIG. 7 is a conceptual diagram for explaining a dividing means, FIG. 9 is a waveform diagram of a data signal, FIG. 10 is a tape pattern, and FIG. 11 is a block diagram for explaining a main part of a video signal reproducing apparatus according to an embodiment of the present invention.

In this embodiment, an HD signal is taken as an example of a high-definition video signal, a level standard signal inserted into a predetermined line of the HD signal is detected, and an input level reference signal related to the input level standard signal is detected. The recording level standard signal obtained by correcting the amplitude level of the HD signal based on the input signal, decoding the input level standard signal, replacing the information as necessary, and encoding the obtained signal is recorded on a magnetic tape as a data signal in the TCI signal. When recording and reproducing this, after decoding the recording level standard signal and replacing information as necessary,
The output level standard signal obtained by encoding this is output H
The signal is inserted into a predetermined line in the D signal and output. Hereinafter, an embodiment will be described with reference to the drawings. First, a prerequisite level standard signal and a line through which the level standard signal is inserted will be described.

The level standard signal is an information signal indicating identification information indicating that the signal inserted into the line is a level standard signal, predetermined information relating to the HD signal, and a level indicating the amplitude level of the HD signal. And a reference signal.

For example, the level standard signal is shown in FIG.
If the HD signal aa is a Y signal as shown in FIG. 2B, the signal is inserted following the horizontal synchronizing signal in the period T1 and is inserted in the period T2 as shown in FIG. It is composed of an information signal to be inserted and a level reference signal to be inserted in a subsequent period T3.

The information signal inserted during this period T2 is composed of, for example, 84 bits, and as shown in FIG.
It consists of an 8-bit postamble signal, an 8-bit identification signal (identification information), a 36-bit data signal, a 28-bit input HD signal time code signal, and an 8-bit check code signal. Are set at a high level of 75% and a low level at a 25% level. The data signal includes information related to the image display format (for example, the presence or absence of a squeeze signal and a letterbox signal), information related to an audio mode (for example, discrimination between mono, stereo, and two languages), information related to a program ID, and captions. And the check code signal is a signal related to the identification signal, the data signal, and the time code signal.

A period T3 following the period T2 is a period corresponding to the above-described 8-bit period, and the reference level of the level reference signal is 75%, which is the same as the above-described high level.
Set to level.

On the other hand, when the HD signal is a color difference signal such as a PB signal or a PR signal, the level standard signal is shown in FIG.
As shown in the figure, the signal is inserted following the horizontal synchronizing signal for the period T1, the information signal is inserted in the period T4, and the level reference signal is inserted in the period T3 following this. Here, the high level of the information signal is set to the 25% level, the low level is set to the -25% level, and the reference level of the level reference signal is also ±.
It is set to have a 25% level. The identification information may be omitted from the color difference signal.
The identification signal inserted into the Y signal transmitted at the same time as the B signal and the PR signal may determine whether or not the level standard signal is inserted into the line.

Next, the line in which the level standard signal is inserted will be described with reference to the waveform diagram of the HD signal shown in FIG.
The numbers shown in the figure represent line numbers,
The first line starts from the start of the vertical synchronization signal of the odd field.

Here, the line in which the level standard signal is to be inserted is because the vertical blanking period and the horizontal synchronizing signal period including the vertical synchronizing signal may be deleted by the Hi-Vision device as described above. It is necessary to insert a level standard signal in an effective scanning line, and since the level standard signal is not a picture signal, an overscan of 8% to 10% is applied to all the scanning lines so as not to be displayed on a monitor screen. It is necessary to consider that the monitor has characteristics.

In consideration of these points, the lines into which the level standard signal is inserted are 41 to 66 lines, 532 to 557 lines, 603 lines to 603 lines of the HD signal.
One line or a plurality of lines out of 628 lines and 1095 to 1120 lines.

Incidentally, since the number of scanning lines that the monitor actually overscans varies for each device, the level standard signal is inserted into scanning lines that are effective scanning lines and that are unlikely to appear on the screen. It is more desirable to do.

In a studio standard HD signal, the number of effective scanning lines is 1,035, and the effective pattern period is four.
1 line to 557 line and 603 line to 1120 line. On the other hand, in the MUSE decoder output signal, the number of effective scanning lines is 1032, and the effective picture period is 42.
Line 557 to line 604 and line 1119.

Therefore, 41,557,603,1120
The line and the 42, 604, 557, and 1121 lines are effective scanning lines, and are lines that satisfy the above-described conditions that are unlikely to appear on the screen. Therefore, 41, 42,
It is desirable to insert a level standard signal into one or more of the 557, 603, 604, 1120 and 1121 lines.

Further, 41 lines and 603 lines are effective scanning lines of a studio standard HD signal, and
This is a line that is not an effective scanning line of the USE decoder output signal. Therefore, assuming that the HD signal is not encoded into the MUSE signal, it is desirable to insert the level standard signal 5a into 41 lines and / or 603 lines. Therefore, in the present embodiment, a recording / reproducing apparatus that supplies an HD signal in which a level standard signal is interposed in 603 or 604 lines and an HD signal in which no level standard signal is interposed in any line is provided. explain.

A recording system of a recording / reproducing apparatus for recording / reproducing an HD signal will be described with reference to FIG. In the figure, a Y signal aa (luminance signal) and a PB, PR signal b are transmitted from a transmission line (not shown).
The b and cc (color signals) are supplied to a clamping means (not shown), where the pedestal level (0% level) of the horizontal synchronizing signal is clamped, and then the level correcting means 4 via A / D converters 1-3. ~ 6. Where Y, PB,
The PR signal is a signal conforming to the domestic Hi-Vision signal standard, and is a signal converted from the R, G, B signals by the following equation.

Y = 0.7154G + 0.0721B + 0.2125R PB = 0.5389 (-0.7154G + 0.9279B-0.2125R) PR = 0.6349 (-0.7154G-0.0721B + 0.7875R) , PR signals aa, bb, and cc are corrected to normal levels. First, when a level standard signal is inserted in line 603, this is given the highest priority. Is not interposed and a level standard signal is inserted in line 604, the level standard signal is used. If no level standard signal is inserted in both line 603 and line 604, horizontal synchronization is used. The level is corrected based on the amplitude level of the signal. The level correcting means 4 will be described with reference to FIGS.

In FIG. 4, starting from step S1,
In step S2, it is determined whether or not an identification signal is present on the 603 line, thereby determining whether or not a level standard signal is inserted on the 603 line. If an identification signal has been detected, the process proceeds to step S4, and if not, the process proceeds to step S3. In step S3, it is determined whether or not the level standard signal is inserted in the 604 line by determining whether or not the identification signal is present in the 604 line.

Steps S2 and S3 will be specifically described with reference to FIG. 5. The vertical synchronizing signal of the odd field is obtained by using the vertical synchronizing signal and the horizontal synchronizing signal separated from the Y signal aa by the line specifying means 57. The horizontal synchronization signal is counted from the start of the process, lines 603 and 604 are specified, and
A line discrimination signal 57a which becomes high level during 3,604 lines is generated and supplied to the timing generation means 54. On the other hand, only when an identification signal is detected in the Y signal aa by the identification signal detection means 53, a detection signal 53a which becomes a high level for a predetermined period is generated, and
To supply. The timing generator 54 performs an AND operation on both inputs. If two pulses are present in the AND output while the line discrimination signal 57a is at the high level, the earliest pulse is given priority, and the level is determined based on this. During a period T3 in FIG. 1A in which the reference signal is interposed, a sample signal 54a which becomes high level is generated and supplied to the reference level detecting means 51.

Step S4 is 603 lines or 6 lines.
The reference level of the level reference signal in the level standard signal inserted in line 04 is detected. More specifically, a first level detection signal 51a obtained by sampling and holding the level reference signal in the Y signal aa by the sample signal 54a by the reference level detection means 51 is supplied to the comparison means 55.

If the level standard signal is not inserted in both the 603 line and the 604 line, the process proceeds to step S5, where the amplitude level of the horizontal synchronizing signal related to the Y signal aa is detected, and this is used as a reference. Have been converted to levels. Specifically, the amplitude level of the horizontal synchronizing signal is detected by the sync level detecting means 58 in FIG. Here, in order to detect the amplitude level, as shown in FIG. 6, a method of detecting V1 from a sync tip level to a sync peak level as an amplitude level and a method of detecting V2 from a pedestal level to a sync peak level as an amplitude level. In this embodiment, the A / D converter 1
Is biased toward the sync peak level to substantially expand the dynamic range. Therefore, a method of detecting V2 as an amplitude level is adopted.
The 40% level is detected as the amplitude level. The second level detection signal 58a obtained by performing the level conversion of “V2 × 2-5” is supplied to the comparing means 55 in order to convert the level to the reference level of 75%.

When steps S4 and S5 are completed, the process proceeds to step S6, where the amplitude level is corrected based on the reference level. Specifically, the comparing means 55 in FIG. 5 compares the first and second level detection signals 51a and 58a with a reference level (75% level) prepared in advance, and
When the second level detection signals 51a and 58a are lower than the reference level, the amplitude level is amplified, and when the second level detection signals 51a and 58a are higher than the reference level, the control signal 55a generated to reduce the amplitude level is supplied to the AGC means. 56. The AGC means 56 corrects the amplitude level of the Y signal aa based on the control signal 55a to obtain the output signal 4a.

As described above, when performing the level correction of the Y signal aa, first, the priority is given to the level standard signal inserted in the 603 line, and then to the priority of the level standard signal inserted in the 604 line. However, when there is no level standard signal in either of them, level correction can be performed based on the amplitude level of the horizontal synchronization signal.

The PB signal bb and the PR signal cc can be similarly corrected by the level correcting means 5 and 6, but there is no identification signal in the level standard signal inserted between these signals. Considering that the line into which the level standard signal is inserted is the same line as the Y signal aa, the identification signal detecting means 53, the timing generating means 54 and the line specifying means 57 in the level correcting means 4 are connected to the level correcting means. 5 and 6, the sample signal 54a is supplied from the level correcting means 4 to the level correcting means 5 and 6.

It is needless to say that younger lines may be given priority as described above for lines 41 and 42. In addition, it is of course possible to determine whether or not the identification signal is inserted in the 605 line after the 604 line and repeat this up to the 628 line to give priority to the younger line.

In this way, the Y, PB, PR signals aa, bb, cc are output by the level correction means 4 to 6 shown in FIG.
The signal obtained by correcting the amplitude level of the input signal to a normal level is used as a non-linear emphasis means 7 to 8 and an input level standard signal decoding means 1 in a recording level standard signal generating means AA to be described later.
9 and supplied.

The output signals obtained by enhancing the high frequency components of the input signal by the non-linear emphasis means 7 to 8 by comparing them with the low frequency components are supplied to the dividing means 10. The reason why the non-linear emphasis means 7 to 8 are provided after the level correction means 4 to 6 is that the characteristics of the non-linear emphasis means 7 to 8 vary depending on the amplitude level of the input signal.

The dividing means 10 determines whether Y, PB, P
It plays the role of dividing the output signals of the non-linear emphasis means 7 and 8 relating to the R signals aa, bb and cc into two systems. This division processing will be described with reference to FIG. 7. The Y, PB, PR signals aa, bb, cc (HD signal) shown in the upper left of FIG.
A signal corresponding to the number of effective scanning lines (1032 lines) of the MUSE signal from which the lines related to the upper and lower sides of the screen are deleted is generated, and this signal is divided into two systems shown in the lower left and lower right in FIG. Divided into signals. The first Y signal 10a, the first PB signal 10b, the first PR signal 10c and the second Y signal 10d, the second PB signal 10e, the second PR signal 10f obtained by dividing in this manner are used. To the first and second TCI
It is supplied to processing means 11 and 12.

Then, the first and second TCI processing means 1
Reference numerals 1 and 12 denote first and second PB signals 10b and 10e and first and second PR signals 10c and 10f, which are converted into line-sequential color signals. And a first and second T obtained by time-multiplexing a compressed luminance signal obtained by compressing the first and second Y signals 10a and 10d on the time axis.
The CI signals 11a and 12a are supplied to the first and second selecting means 13,
14.

Then, the first and second selecting means 13 and 14
Are the first and second TCI signals 11a and 12a, the first and second recording level standard signals 21a and 21b supplied from the recording level standard signal encoding means 21, and the first and second blanking signals 22a and 22a. 22b to generate the first and second recording signals 13a and 14a shown in FIG. That is, in a period T6 shown in FIG.
CI signals 11a and 12a are selected.
The second blanking signals 22a and 22b are selected, and during a period T8, the first and second recording level standard signals 21a and 21b are selected.
b has been selected.

The blanking signal generating means 22
Is composed of a ROM or the like, and is the same as a switching signal for securing a margin for switching magnetic heads shown by "SW" in FIG. 8 and a horizontal / vertical synchronization signal shown by "V" in FIG. The correction signal is represented by “CAL” in the figure. This correction signal is, for example, a ramp signal for correcting linearity between the two systems, a gray scale signal for adjusting the DC level and amplitude level between the two systems, and a frequency signal for correcting the frequency characteristics between the two systems. This is a signal obtained by sequentially switching a multi-burst signal or the like.

Now, the recording level standard signal generating means AA for generating the first and second recording level standard signals 21a and 21b will be described. The recording level standard signal generating means AA is an input level standard signal decoding means. 19,
Control means 20, recording level standard signal encoding means 21
It is composed of

Then, the input level standard signal decoding means 19 outputs the level standard signal (shown in FIG. 1A) in the output signal of the level correcting means 4 and the level standard signal in the output signals of the level correcting means 5 and 6. (Shown in FIG. 1 (B)), respectively, and an information signal (FIG. 1 (A)
The predetermined information and the level reference signal included in the periods T2 and T4 shown in (B) (periods T3 and T in FIGS. 1A and 1B)
5) is supplied to the control means 20. Further, the control means 20 supplies information obtained by replacing predetermined information with new information as needed and the reference level information to the recording level standard signal encoding means 21.

Then, the recording level standard signal encoding means 21 outputs the first and second signals shown in FIG.
The second recording level standard signals 21a and 21b are generated. The periods t4 and t5 in FIG.
A recording information signal corresponding to a signal obtained by compressing the information signal illustrated in T5 on the time axis is inserted.
At t2 and t3, recording level reference signals corresponding to signals obtained by compressing the level reference signals illustrated in periods T2 and T3 in FIG. Here, the time compression ratio is the same as that of the video signal, and the periods t4 and t5 coincide with the period of the compressed line-sequential color signal, and the periods t2 and t5 coincide with the period of the compressed luminance signal.

Thus, the first and second selecting means 1
The first and second recording signals 13a and 14a obtained by selecting the input signals at 3 and 14 are subjected to predetermined modulation such as FM modulation via D / A converters 15 and 16, respectively. 2 modulation means 17 and 18. These output signals are amplified to a predetermined level by a recording amplifier (not shown) and recorded on the magnetic tape TT via the magnetic heads 1A and 1B and the magnetic heads 2A and 2B.

Here, the tape pattern of the magnetic tape TT will be described with reference to FIG. The numbers in the figure represent line numbers, “SW” is a switching signal, “V” is a vertical synchronizing signal, “CAL” is a correction signal, and “DA” is a recording level. Each represents a standard signal.

The first recording TCI signal 13a for the even-numbered line is converted from "SW" to "556 (1)" shown in FIG. 10A by using the magnetic head 1A provided on the rotating drum. / 2) "and the tracks from" 556 (1/2) "to" 1118 "shown in FIG. 10A using the magnetic head 1B. On the other hand, the second recording TCI signal 14a for the odd-numbered line is converted from "SW" to "557 (1/2)" shown in FIG. 6A using the magnetic head 2A disposed on the rotating drum. And the magnetic head 2B is used to record information on tracks from "557 (1/2)" to "1119" shown in FIG. 10A. The magnetic heads 1A and 2A or the magnetic heads 1B and 2B disposed close to each other perform simultaneous recording, but the preceding audio magnetic heads 3A and 3B (not shown) perform recording in FIG. Audio tracks A and B are formed. It is needless to say that the magnetic tape pattern shown in FIG. 10B can be obtained by appropriately setting the mounting height of the magnetic heads 1A, 2A, 1B, 2B and the audio magnetic heads 3A, 3B.

Thus, the Y, PB, PR signals a
The level standard signals inserted in the predetermined lines a, bb, and cc can be substantially recorded on the magnetic tape TT.

Next, the reproducing system will be described with reference to FIG. Referring to FIG.
A, 1B and signals reproduced using the magnetic heads 2A, 2B are amplified to a predetermined level by a preamplifier (not shown), and then demodulated by demodulation means 30 and 31 such as FM demodulation. A recording level standard signal decoding means 47 in the output level standard signal generating means BB via the D converter 23;
It is supplied to first and second TCI inverse conversion means 34 and 35.

The first and second TCI inverse converters 34 and 35 have a complementary relationship with the first and second TCI converters, and respectively convert the compressed luminance signal and the compressed line-sequential color signal. The signal obtained by performing the time-axis expansion and the line-sequential demodulation is combined with the synthesizing means 3 having a complementary relationship with the dividing means.
6, where Y and P obtained by synthesizing the signals of both systems are obtained.
Signals corresponding to the B and PR signals are supplied to non-linear de-emphasis means 37 to 38.

The nonlinear de-emphasis means 37
38 supplies signals obtained by attenuating high-frequency components in comparison with low-frequency components in accordance with the amplitude level of the input signal to third to fifth selecting means 40 to 42.

The third to fifth selecting means 40 to 4
2, a signal 46a relating to the vertical blanking period and the horizontal synchronization period is supplied from the signal generation means 46, and
The output level standard signal 48a to be inserted into the 03 line is supplied from the output level standard signal encoding means 48.

Here, the output level standard signal generating means BB for generating the output level standard signal will be described. The recording level standard signal decoding means 47 is provided with the first and second signals shown in FIG.
The second recording level standard signals 21a and 21b are decoded. The predetermined information obtained by decoding the recording information signal inserted in the periods t2 and t4 in FIG.
3, and the reference level information obtained by decoding the recording level reference signal inserted at t5 is supplied to the control means 20. The control means 20 supplies the output level standard signal encoding means 48 with information obtained by replacing predetermined information with new information as required and the reference level information.

The output level standard signal encoding means 48 generates the output information signals shown in the periods T2 and T4 in FIGS. 1A and 1B based on the input information, and outputs the output information signals in the periods T3 and T5. The output level reference signal 48a obtained by generating the output level reference signal shown in FIG. 1 is supplied to the third to fifth selecting means 40 to 42, respectively.

Then, the third to fifth selecting means 40 to 42
Supplies the output Y, PB, and PR signals dd, ee, and ff obtained by appropriately selecting input signals to transmission lines (not shown) via A / D converters 34 to 36.

As described above, according to the recording / reproducing apparatus according to the present embodiment, even when the HD signal in which the input level standard signal is inserted into the 603 line is recorded,
Despite recording only 1032 of the signal scanning lines,
There is an effect that an input level standard signal can be converted into a recording level standard signal and recorded on a magnetic tape. When reproducing this magnetic tape, an output level standard signal generated based on the recording level standard signal is converted into 603 lines. Can output an HD signal obtained by interpolating the same, so that there is an effect that the management of the amplitude level can be easily performed by the high-definition equipment at the subsequent stage.

In the embodiment described above, the recording level reference signal in the recording level standard signal is generated based on the input level reference signal in the input level standard signal.
In consideration of the fact that dubbing is repeated and the S / N of the input level reference signal deteriorates, a ROM may be provided in the recording level reference signal encoding means 21 so that the recording level reference signal may be generated. It is. The output level standard signal encoding means 48 includes a ROM.
It is of course possible to provide an output level reference signal.

In the above-described embodiment, the recording / reproducing apparatus has been described as an example of a VTR using a magnetic tape as a recording medium. However, the present invention is not limited to this.
The recording medium may be a disk-shaped optical disk, a floppy disk, or the like, or may be a semiconductor memory.

[0061]

As described above, according to the high definition video signal recording apparatus of the present invention, the amplitude level of the input high definition video signal is corrected based on the input level reference signal. Since the level correction means is provided, there is an effect that an input high definition video signal can be recorded at a regular amplitude level, and a converted signal obtained by at least synthesizing a recording video signal and a recording reference level signal is recorded. Since the recording is performed on the medium, the amplitude level information can be recorded on the recording medium even if the input level reference signal is deleted by the recording processing unit.

According to the high definition video signal reproducing apparatus of the present invention as described above, the output level for generating the output level reference signal based on the reproduced recording reference level signal A high-definition video signal recording device and a high-definition video signal, wherein the high-definition video signal includes a reference signal generating means for outputting an output high-definition video signal obtained by interposing the output level reference signal on a predetermined line of the reproduced video signal. There is an effect that the amplitude level error generated in the reproducing apparatus can be transmitted to another device that handles a high definition video signal. Further, as described above, the high-definition video signal recording / reproducing apparatus according to the third aspect of the present invention may have the effects of the above-described high-definition video signal recording apparatus and high-definition video signal reproducing apparatus. it can.

According to the high-definition video signal recording apparatus according to the fourth aspect of the present invention, as described above, the effect of the high-definition video signal recording apparatus according to the first aspect is obtained. Recording information signal generating means for generating a recording information signal by replacing predetermined information obtained by decoding the input information signal with new information as necessary, and comprising a recording video signal, a recording reference level signal, Since the converted signal obtained by combining at least the recording information signals is recorded on the recording medium, the predetermined information can be recorded on the recording medium even if the input level reference signal is deleted by the recording processing means.

According to the high-definition video signal reproducing apparatus according to the fifth aspect of the present invention, as described above, the high-definition video signal reproducing apparatus according to the second aspect of the present invention is provided. In addition to the effects of the device, the apparatus further comprises output information signal generating means for generating predetermined output information by replacing predetermined information obtained by decoding the reproduced recorded information signal with new information, and generating an output information signal. An output high-definition video signal obtained by interposing an output level standard signal obtained by multiplexing an output level reference signal and the output information signal is output to a predetermined line, so that predetermined information recorded on a recording medium is output. There is an effect that it can be transmitted to other devices that handle high definition video signals.

According to the high-definition video signal recording / reproducing apparatus of the present invention as described above, the high-definition video signal recording apparatus having the above-mentioned configuration is provided. The effects of the high-definition video signal reproducing device having the configuration described in claim 5 can be provided.

[Brief description of the drawings]

FIG. 1 is a waveform diagram of a level standard signal.

FIG. 2 is a waveform diagram for explaining a line of a level standard signal inserted into an HD signal.

FIG. 3 is a block diagram for explaining a main part of the video signal recording device according to one embodiment of the present invention.

FIG. 4 is a block diagram for explaining a main part of a level correction unit.

FIG. 5 is a waveform diagram of a ternary synchronization signal.

FIG. 6 is a flowchart for explaining the operation of a level correction unit.

FIG. 7 is a conceptual diagram illustrating a dividing unit.

FIG. 8 is a waveform diagram of a TCI signal.

FIG. 9 is a waveform diagram of a recording level standard signal.

FIG. 10 is a tape pattern.

FIG. 11 is a block diagram for explaining a main part of a video signal reproducing apparatus according to one embodiment of the present invention.

[Explanation of symbols]

4 to 6 level correction means 10 division means (recording processing means) 11, 12 first and second TCI processing means (recording processing means) 34, 35 first and second TCI inverse conversion means (reproduction processing means) 11a , 12a First and second TCI signals (recorded video image signals) 13a, 14a First and second recorded signals (recorded signals) 36 Synthesizing means (reproducing processing means) 48a Output level standard signals aa, bb, cc Y , PB, PR signal (input high-definition video signal) cc, dd, ee Output Y, PB, PR signal (output high-definition video signal) AA Recording level standard signal generating means (recording level reference signal generating means, recording information Signal generation means) BB output level standard signal generation means (output level reference signal generation means, output information signal generation means) TT magnetic tape (recording medium)

Claims (6)

(57) [Claims] 1. A high-definition video signal recording apparatus for recording an input high-definition video signal in which an input level reference signal representing an amplitude level of a video is inserted in a predetermined line, comprising: Level correcting means for correcting the amplitude level of the video signal based on the input level reference signal; and removing upper and lower lines including the predetermined line relating to the input high definition video signal from an output signal of the level correcting means, and Recording processing means for generating a recording video signal by performing recording processing of the above, and recording level reference signal generating means for generating a recording level reference signal based on the input level reference signal, wherein the recording video signal and the recording level A high-definition video signal recording apparatus characterized in that a recording signal obtained by combining at least a reference signal is recorded on a recording medium. 2. A recording video signal obtained by deleting upper and lower lines of an input high-definition video signal and performing a predetermined recording process, and at least a recording level reference signal representing an amplitude level of the input high-definition video signal. A high-definition video signal reproducing apparatus for reproducing a recorded signal from a recording medium, the reproduction processing means performing a predetermined reproducing process on the reproduced recorded video signal to generate a reproduced video signal; Output level reference signal generation means for generating an output level reference signal based on the level reference signal, wherein an output high definition video signal obtained by inserting the output level reference signal into a predetermined line of the reproduced video signal is provided. High-definition video signal playback device for output. 3. A high-definition video signal recording and reproducing apparatus for recording and reproducing an input high-definition video signal in which an input level reference signal representing an amplitude level of a video is inserted in a predetermined line, Level correction means for correcting the amplitude level of the definition video signal based on the input level reference signal; and upper and lower lines including the predetermined line related to the input high definition video signal are deleted from the output signal of the level correction means. Recording processing means for performing a predetermined recording process to generate a recording video signal; recording level reference signal generating means for generating a recording level reference signal based on the input level reference signal; the recording video signal and the recording level Recording / reproducing means for recording / reproducing a recording signal obtained by synthesizing at least a reference signal on a recording medium; and performing a predetermined reproducing process on the reproduced recorded video signal to generate a reproduced video signal. And an output level reference signal generating means for generating an output level reference signal based on the reproduced recording level reference signal. The output level reference signal is provided to the predetermined line of the reproduced video signal. A high-definition video signal reproducing device that outputs an output high-definition video signal obtained by interposition. 4. An input high-definition image in which a level standard signal in which an input level reference signal indicating an amplitude level of an image and an input information signal indicating predetermined information are multiplexed is inserted in a predetermined line. A high-definition video signal recording apparatus for recording a signal, comprising: level correction means for correcting an amplitude level of the input high-definition video signal based on the input level reference signal; Recording processing means for deleting upper and lower lines including the predetermined line from the output signal of the level correction means and performing predetermined recording processing to generate a recording video signal; and a recording level based on the reference level of the input level reference signal. A recording level reference signal generating means for generating a reference signal; and a recording information signal for generating a recording information signal by replacing the predetermined information obtained by decoding the input information signal with new information as necessary. High-definition video signal recording, characterized in that the recording signal comprises at least the recording video signal, the recording level reference signal, and the recording information signal. apparatus. 5. A recording video signal obtained by performing predetermined recording processing by deleting upper and lower lines of an input high definition video signal, a recording level reference signal representing an amplitude level of the input high definition video signal, and representing predetermined information. What is claimed is: 1. A high-definition video signal reproducing apparatus for reproducing a recording signal obtained by synthesizing at least a recording information signal from a recording medium, comprising: performing a predetermined reproduction process on the reproduced recording video signal to generate a reproduction video signal Processing means; output level reference signal generating means for generating an output level reference signal based on the reproduced recording level reference signal; and decoding the predetermined information obtained by decoding the reproduced recording information signal as necessary. Output information signal generating means for generating an output information signal by replacing the output information signal with new information, and multiplexing the output level reference signal and the output information signal on a predetermined line of the reproduced video signal. A high-definition video signal reproducing device that outputs an output high-definition video signal obtained by interposing an output level standard signal. 6. An input high-definition image in which a level standard signal in which an input level reference signal indicating an amplitude level of an image and an input information signal indicating predetermined information are multiplexed is inserted in a predetermined line. What is claimed is: 1. A high-definition video signal recording / reproducing apparatus for recording and reproducing a signal, comprising: level correction means for correcting an amplitude level of the input high-definition video signal based on the input level reference signal; Recording processing means for deleting upper and lower lines including the predetermined line from the output signal of the level correction means and performing predetermined recording processing to generate a recording video signal, based on a reference level of the input level reference signal. A recording level reference signal generating means for generating a recording level reference signal; and a recording means for generating a recording information signal by replacing the predetermined information obtained by decoding the input information signal with new information as necessary. Recording information signal generating means; recording / reproducing means for recording / reproducing, on a recording medium, a converted signal obtained by combining at least the recording video signal, the recording level reference signal, and the recording information signal; Reproduction processing means for performing a predetermined reproduction process to generate a reproduction video signal; output level reference signal generation means for generating an output level reference signal based on the reproduced recording level reference signal; Output information signal generating means for generating the output information signal by replacing the predetermined information obtained by decoding with new information as required; the reproduced video signal; the output level reference signal; and the output information signal. A high-definition video signal recording / reproducing apparatus which outputs an output high-definition video signal obtained by at least synthesizing an output level standard signal obtained by multiplexing the above.