JPH0276495A - Recording device and reproducing device for digital m/pal signal - Google Patents

Abstract

PURPOSE:To decrease the wasteful space on a tape for two lines per field by setting the selection range of a recording sample in a line in the sample to constitute one line to two types of the range changed to two samples. CONSTITUTION:An analog M/PAL signal from a terminal 1 is inputted to an AD means 2 and a recording video timing generating means 5. At the means 2, the analog M/PAL signal is sampled four times as much as a color sub-carrier frequency, converted to a digital signal and outputted to a channel 3. At the means 2, the analog M/PAL signal is sampled four times as much as the color sub-carrier frequency, converted to a digital signal and outputted to a channel 3. At the means 5, respective types of timing occur from the analog M/PAL signal. A selection range changing means 9 changes the selection range of a recording sample for a field by a digital M/PAL signal from a channel 3, a sample number, a line number and a field number from channels 6 to 8. Respective types of the timing generated by a recording channel timing generating means 17 are cleared by a PG signal inputted, and the synchronization of the rotation phase and the recording signal of a head is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a recording device and a reproducing device for digitized M/PAL signals, specifically a digital VTR for recording and reproducing M/PAL signals. This invention relates to adding processing circuitry to either the recording side or the playback side circuit so that a high-speed playback image with clear color can be obtained when playing back at a high tape speed.

Conventional technology Generally, M/PAL signals include color subcarriers,
The color frame period, which is the period of each frame, is
There are 8 fields. Information that identifies each field within one color frame is called a field number. As an example, fields 1.2) fist..., 8 are usually used, but in the following, fields 0.1,..., respectively are used for explanation purposes.
, 7. FIG. 20 is a spatial representation of one frame of the M/PAL signal. Field number force 0
12.4.6 field as even field, same <1
．． The fields 3.5.7 are odd fields, the line range for one field is 120.123, and the line range corresponding to the video signal excluding field blanking is 122.125. Typically range 122.1
The recording line range is 121.124, including 25. Among the range of samples 126 constituting any one line in this recording line, the range of samples outside the line blanking period is indicated by 128.

Usually, the range 127 including the range 128 is set as the range of in-line recording samples. All of the in-line recording samples in the recording line are treated as recording samples, and the digital VTR digitally processes and records the recording samples. Each sample within one field is given a sample number in the horizontal direction and a line number in the vertical direction. The timing of the first line number and the first sample number of each fine lead is set as the field start. The line number including the field start, that is, the line number O, may be delayed by 262 lines or 263 lines compared to the corresponding even field for an odd field, but in the following it is assumed that it is delayed by 263 lines. Regarding recording samples, numbers are assigned to recording samples within a line and recording lines, and these will be referred to as recording sample numbers and recording line numbers, respectively. Further, the timing of the first recording line number and the first recording sample number of each field is defined as the recording field start.

Generally, the head trajectory on the tape of a digital VTR is as shown in FIG. In the same figure, the tape 130 is indicated by the arrow 13
It runs at normal speed in the direction of 1, and the head is in the direction of arrow 133.
When traced in the direction of , a parallelogram track surrounded by the solid line in the figure is formed. If we consider a format in which one field of a video signal can be recorded on one track, each track has a field number of 0.1.2).
..., 7 fields are recorded. When the tape 130 recorded in this manner is played back, for example, in the direction of arrow 131 at eight times the normal speed, the head trace will be in the direction of arrow 133, and the parallelogram area surrounded by the dotted line will be played back. . That is, one field of image reproduced at this time is formed from samples from field O to field 7.

Next, the phase of the carrier color signal of the digital M/PAL signal sampled at four times the color subcarrier frequency will be explained using FIG. 22. In the figure, field numbers are divided into frames, and the contents of each frame are spatially displayed according to sample numbers in the horizontal direction and line numbers in the vertical direction. Line numbers for odd fields are shown in parentheses. The sampling axes are set at four appropriate angles obtained by dividing 360 degrees clockwise into four equal parts, and these are designated as PlQlR and S in order. Further, the symbols added in front of these letters represent the burst phase serving as a reference for the phase of each sample, and 10 corresponds to +135 degrees and - corresponds to -135 degrees with respect to the U axis. Here, in the digital M/PAL signal shown in the spatial and temporal range of FIG. 22, between each sample,
It is assumed that there is a strong correlation between the luminance signal and the carrier color signal. In this way, the phase of the carrier color signal of the digital M/PAL signal changes between fields and frames.

When such a digital M/PAL signal is recorded and reproduced at high speed as shown in FIG.
Since it is formed from samples having different carrier color signal phases as shown in FIG. 22, there is a problem that the hue is not displayed correctly.

In order to solve this problem, the method shown in FIG. 23 has been proposed. This figure shows how the specific phase of the carrier color signal, for example +P, moves depending on the field number in Figure 22, and the carrier color signal phase changes to +P at each sample number of each line number. It is expressed as a field number. Here, the underlined portion includes all field numbers from 0 to 7 in just the right amount. If the range of recording samples in one field is vertically transitioned according to the transition of the underlined field number, as can be seen from Figures 22 and 23, recording samples with the same recording sample number and recording line number will be transported. The color signal phase is in the same phase regardless of the field number, and even if samples with different field numbers are mixed in one field during high-speed playback, the phase relationship of the carrier color signal is normal, and high-speed color playback is possible. can be realized.

Problems to be Solved by the Invention The method shown in FIG. 23 has at least two problems. One is that there are Q- 8÷2-1=3 useless lines at the beginning and end of the recording line that cannot exist in all fields. Since these three lines must be recorded for each field, wasted space on the tape increases and the recording time for a given tape length becomes shorter. Another problem is that eight lines in the vertical direction of the image are treated as the same line during high-speed reproduction, resulting in a large deterioration in image quality in the vertical direction.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide an apparatus that minimizes the number of useless lines in recording lines and reduces deterioration in image quality during high-speed reproduction.

Means for Solving the Problems The present invention sets the selection range of in-line recording samples among the samples constituting one line to two types of ranges with two sample transitions according to the field number of the digital M/PAL signal. This is a recording device equipped with selection range transition means.

According to the present invention, with the above-described configuration, the in-phase point of the conveyed color signal is selected in the horizontal direction, so the number of unnecessary lines in the recording line is small, and the image quality in the vertical direction during high-speed reproduction is small.

Embodiment FIG. 1 is a block diagram of an embodiment of a digital M/PAL signal recording apparatus according to the present invention.

In the figure, an analog M/PAL signal from a terminal 1 is input to an analog/digital conversion means (AD means) 2 and a recording video timing generation means 5. The AD means 2 converts the analog M/P A L signal into a color subcarrier frequency Fsc of 4.
The signal is sampled at twice the frequency, converted to a digital M/PAL signal, and output to path 3.

In the recording video timing generation means 5, the analog M/P
Various timings are generated from the AL signal.

FIG. 5 shows a detailed block diagram of the recording video timing generating means 5. In the same figure, analog M/P from terminal 1
The AL signal is input to the burst separation means 50, the line synchronization separation means 51, and the field synchronization separation means 52, which separate the burst, line synchronization, and field synchronization from the analog M/PAL signal, and pass them through paths 53, 54, .
55 respectively. In the 4Fs c-PLL means 56,
Based on the burst from path 53, multiply by 4 and get 4Fsc
A sample clock is created and output to path 4. This sample clock is input to the AD means through the path 4 in FIG. 1, and is used as a clock for each digital circuit, such as sampling the digital M/PAL signal. Field start generating means 57 generates a field start, which is the start timing of a field, based on the sample clock, line synchronization, and field synchronization from paths 4, 54, and 55, respectively, and outputs it to path 59.

The color subcarrier frequency Fsc of the M/PAL signal is Fsc=909÷4XFh with respect to the line frequency Fh, so the sample clock 4Fsc is 4Fs
c=909XFh. That is, one line has 909 samples. Also, the number of lines in one field is 263 lines and 2
The case of 62 lines is repeated alternately.

Therefore, if we take the even field to 263 lines and the odd field to 262 lines, the interval between the field starts from the even field to the odd field is 909 x 263 = 239087 clocks, and the interval between the field starts from the odd field to the even field is: 909X2B2=238158 clocks.

In the color frame detection means 58, the path 53.54.5
Based on the burst, line synchronization, and field synchronization from 5 to 5, a color frame start, which is the start timing of a color frame every 8 fields, is generated. The sample counter 60 counts the sample clock from the path 4 by one line, that is, 1135 clocks, and is cleared once per field by the field start from the path 59.

Line counter 61 receives 1 from sample counter 60.
The carry output for each line is counted and cleared once per field by field start from path 59. The field counter 62 counts the carry output for each field from the line counter 61, and also counts the carry output from the line counter 61.
Clear once per color frame by starting color frame from 8. The count values of the sample counter 60, line counter 61, and field counter 62 are a sample number, a line number, and a field number, respectively, and are output to terminals 6, 7, and 8, respectively.

Returning to FIG. 1, the selection range transition means 9 converts the selection range of recording samples using the digital M/PAL signal from path 3 and the sample number, line number, and field number from paths 6, 7, and 8, respectively. Transition by field. An embodiment of this selection range transition means 9 will be described next. In this embodiment, from route 3 to selection range transition means 9
The digital signal input to is output to the path 10 without any processing. A detailed block diagram of other parts of the selection range transition means 9 is shown in FIG. Decoder 70 outputs a recording field start to path 71 based on the sample number from path 6, the line number from path 7, and the field number from path 8. The recording sample counter 72 sets the sample clock to 1.
It counts 135 clocks, clears it once per field by starting the recording field from path 71, and outputs the recording sample number, which is the counted value, to path 11. The recording line counter 73 counts the carry output for each line from the recording sample counter 72 [, and is cleared once per field by the recording field start from the path 71, and the recording line number, which is the count value, is cleared from the path 71. Output to 12.

Here, in order to solve the problems of the conventional method shown in FIG. 23, the method shown in FIG. 8 is adopted in this embodiment. In other words, in FIG. 23, the range of recording samples to be recorded is shifted in the vertical direction, whereas in FIG. Reduce the amount of transition.

The method shown in FIG. 8 of this embodiment has at least two effects. One is that the number of unnecessary lines at the beginning and end of the recording line, which cannot exist in all fields, is 4÷2-1=1 line, which is 3 lines in the conventional method shown in Figure 23. This means that the number of lines per field is two fewer than that of the previous field.

However, since the method shown in FIG. 8 involves a two-sample transition in the horizontal direction, there is a possibility that more in-line recording samples must be taken by two wasted samples. However, the number of recording samples within a line is usually set to a value that is easily divisible to facilitate various digital signal processing. In the case of a digital M/PAL signal sampled at 4Fsc, 1
The number of samples corresponding to the video signal in a line is approximately 75
3 samples, but 768 samples has been conventionally adopted as a much cheaper value exceeding this. Therefore, if these conventional values are employed, there is no need to create unnecessary samples in the horizontal direction using the method of the eighth leap. As described above, according to the method shown in FIG. 8, wasted space on the tape for two lines per field is reduced, and the recording time for a given tape length can be increased.

Another effect of the method shown in FIG. 8 is that there is little deterioration in image quality during high-speed playback. As indicated by the underline,
During high-speed reproduction, the method shown in FIG. 23 treats eight samples in the vertical direction as the same sample, but the method shown in FIG. 8 treats eight samples distributed in the horizontal and vertical directions as the same sample. Therefore, the closer these samples are to each other, the higher the correlation between the samples will be, which will improve the image quality during high-speed playback. Here, the line interval within one frame is examined using the sample interval of 4Fsc within one line as a unit. The number of samples corresponding to a video signal per line is approximately 753 samples, and the number of lines corresponding to a video signal per frame is approximately 486 lines. Since the aspect ratio of the video signal on the screen is 3:4, the converted value of the number of samples equivalent to one line is 753÷4×3÷486=1.2 samples/line. Next, the degree of correlation between samples is expressed by the larger of the number of samples in the horizontal direction or the number of samples in the vertical direction multiplied by the conversion value. The smaller the number, the higher the correlation. The results are larger in the vertical direction for both the method of FIG. 23 and the method of FIG. 8, with the method of FIG. 23: skin 6 samples and the method of FIG. 8: 4.8 samples. In this way, compared to the conventional method shown in Fig. 23,
The method shown in FIG. 8 of the present invention can increase the degree of correlation between samples, and therefore can reduce image quality deterioration during high-speed reproduction.

To implement the method of FIG. 8, the recording field start is transitioned horizontally and vertically according to the underlined field number. At this time, the transport color signal phase of not only samples that coincide with the recording field start but also samples having the same recording sample number and the same recording line number is generally constant regardless of the field number. In mode 0 of FIG. 9, the recording field start timing for each field number is indicated by "0".

The values of the sample number and line number themselves at the timing of becoming "0" are just examples, and in the present invention, the spatial relative relationship of "0" as the field changes has meaning.

In this way, if the decoder 70 is configured as in mode 0 in FIG. Regardless of the number, they will be in phase.

Here, the selection range transition means 9 is constructed based on FIG. 3. In FIG. 3, the present invention is realized by changing the timing of signal control for each field.

Conversely, even if the selection range transition means 9 is configured to delay the signal for each field while leaving the timing unchanged,
It is clear that the same results as in the previous example can be obtained.

Next, the decoder 13 in FIG. 1 generates a write address for the recording memory 14 from the recording sample number from the path 11, the recording line number from the path 12, and the field number from the path 8. In this way, samples of the same phase of the carrier color signal are written to the same address in the recording memory 14, regardless of the field number.

The sample written in the recording memory 14 in this way is
Reading is performed according to the read address input from the recording channel timing generating means 17 through the path 16.

A synchronization ID adding means 18 adds a synchronization signal and an ID signal, which is an address within the color frame of this synchronization block, to the read sample for each appropriate synchronization block. This ID signal includes a field number. In the recording channel timing generation means 17, a crystal oscillator generates a master clock that determines the data rate to be recorded, and various timings created by dividing the clock are cleared by a PG multiplied signal of the rotating drum inputted from a path 20, and synchronizes the rotational phase with the recording signal. Furthermore, an ID signal is created based on the field number from the path 8 and is supplied to the synchronous ID adding means 18 through the path 19. On the other hand, the synchronization block to which the synchronization signal and ID signal are added is subjected to recording equalization and recording amplification by the recording RF means 21, and is output to the terminal 22. The signals processed by the recording system from terminal 1 to terminal 22 described above are recorded on a tape through a recording head.

Next, FIG. 2 shows a block diagram of an embodiment of a digital M/PAL signal reproducing apparatus according to the present invention. In the figure, a signal reproduced from a tape recorded by the recording device through a reproduction head is inputted from a terminal 23 to a reproduction RF means 24.

Here, the reproduced equalized and binary identified signal is
The signal is input to the detection means 25 to detect a synchronization signal, establish a synchronization block, and detect an ID signal. This ID
The signal is input to the reproduction channel timing generating means 27 through the path 26, and a write address and field number are generated in units of synchronized blocks. This reproduced field number is hereinafter referred to as a reproduced field number. In the reproduction memory 28, the synchronization block from the synchronization ID detection means 25 is written in accordance with the write address and reproduction field number from the path 29.

The reproduction memory 28 outputs the sample to the path 32 according to the read address from the path 30, and also outputs the sample to the path 32.
1, outputs the reproduction field number corresponding to the reproduced sample. FIG. 6 shows a detailed block diagram of the reproduction video timing generating means 46 which is the basis of these controls. The only difference between FIG. 6 and FIG. 5 is that the input from terminal 47 is a reference signal that serves as a reference for reproduction synchronization. Therefore, the sample number, line number, and field number of the reference signal at terminal 47 are
Outputting to paths 37, 38 and 39 respectively is the fifth
As explained in the figure. This field number is given below as
It is called the reference field number.

Next, one embodiment of the selection range transition means 33 will be described. In this embodiment, the digital signal input from the path 32 to the selection range inverse transition means 33 is output to the path 40 without any processing. A detailed block diagram of other parts of the selection range reverse transition means 33 is shown in FIG. The difference between FIG. 4 and FIG. 3 is that the decoder 74 inputs the sample number and line number from paths 37 and 38, as well as the reproduction field number from path 31 and the mode switching signal from terminal 48. Therefore, the contents of decoder 74 are different from decoder 70. The contents of the decoder 70 were in mode O in FIG. 9, but the contents in the decoder 74 were in mode 0 in the same figure.
and mode 1. That is, switching is performed by a mode switching signal from path 48. Here mode 1
mode 0 is for high-speed playback mode that plays across the track; mode 0 is for other playback modes, such as normal playback mode, still and slow playback mode, or still, slow, and playback without on-track using a movable head. This is the case in the on-track special playback mode for high-speed playback. First, in the case of mode 0, since recorded fields are reproduced in complete form in these reproduction modes, it is necessary to restore the samples transitioned for each field by the selection range transition means 9 during recording. for that purpose,
A recording field start is generated at the same timing as the decoder 70 during recording, and the resulting recording sample number and recording line number are respectively input to the decoder 34 in FIG. 34, the same write address to the recording memory 14 at the time of recording may be given as the read address to the reproduction memory. Since the field number input to the decoder 74 at this time is the playback field number from the path 31, reverse transition is automatically performed even when the playback memory 28 is read out multiple times in succession, such as in still and slow playback modes. It will not be carried out and no inconvenience will occur. However, limited to normal playback mode, the playback field number and reference field number match, so
Even if the field number input to the decoder 74 is a reference field number, the result remains the same. In this manner, in mode 0, the selection range inverse transition means 33 performs the process of completely reverting the processing performed by the selection range transition means 9 at the time of recording.

On the other hand, in mode 1, samples from multiple fields have been written to the reproduction memory 28, and there is no need to perform a reverse transition. In this case, it is forcibly fixed to a specific field. In mode 1 of FIG. 9, the reproduction field number is fixed to field 0 or field 3. With the above configuration, the digital M/PAL signal output from the selection range inverse transition means 33 to the path 40 is completely free from any adverse effects caused by the processing of the selection range transition means 9 during recording when in mode 0. In mode 1, even though samples from multiple fields are mixed,
The phase of the carrier color signal becomes normal within the field. However, in the case of mode O still playback, slow playback, or mode 1, the reference field number and the playback field number do not necessarily match, so it is necessary to normalize the hue using the carrier color signal inverting means 41 at the subsequent stage. Here, the selection range reverse transition means 33 is constructed based on FIG. 4.

In FIG. 4, the timing for controlling the signal is changed for each field, but it is also possible to configure the selection range inverse transition means 33 to delay the signal for each field while leaving the timing unchanged. It is clear that the same result as the example can be obtained.

Next, the digital M/PAL signal on path 40 is input to carrier color signal inverting means 41 . FIG. 7 shows its detailed block diagram. In the figure, both 100 and 102 are two-line delay means, which divide the signal on path 40 into a signal on path 101 delayed by two lines and a signal on path 103 delayed by four lines. The signals on path 40 and path 103 are each 10
4. Multiply by (-1/4) by 106 and input to the adder 107. On the other hand, the signal on path 101 is 105 (+1/2
) and input it to the adder 107. The adder 107 adds up these three human efforts. As can be seen from FIG. 22, in the M/PAL signal, the carrier color signal phases of samples two lines apart within one field differ by 180 degrees. Therefore, when a digital M/PAL signal is divided into a luminance signal and a carrier chrominance signal, the output of the adder 107 does not include a luminance signal that is correlated in the vertical direction, but a luminance signal and a carrier chrominance signal that are not correlated in the vertical direction. It becomes only. Next, only the carrier color signal is extracted by a bandpass filter 108 centered at the color subcarrier frequency Fsc, and then input to an adder 112 and an inversion controller 110 through a path 109. Subtractor 112
Then, from the M/PAL signal from path 101 to path 109
A luminance signal is output to path 113 by subtracting the carrier color signal.

On the other hand, the inversion controller 110 outputs the carrier color signal on the path 109 to the path 111 either as is or with the phase inverted by 180 degrees, depending on the inversion control signal from the path 115. Finally, the adder 114 adds the luminance signal on the path 113 and the carrier color signal on the path 111 to generate a digital M/
It is set as a PAL signal and output to path 42.

In this manner, in the carrier color signal inverting means 41, only the phase of the carrier color signal of the digital M/PAL signal on the path 40 is inverted or not in accordance with the inversion control signal from the path 115. This inverted control signal is generated by the decoder 11B. The decoder 116 receives the sample number, line number, and reference field number from paths 37, 38, and 39, the playback field number from path 31, and the mode switching signal from path 48, respectively.

Here, in FIG. 22, the sampling axis P1Q1 R
The phase relationship of the carrier color signal is examined when the burst phase is set to 45 degrees, -45 degrees, -135 degrees, and 135 degrees, respectively, with respect to 1S, and the burst phase is left unchanged. In Figure 10,
The carrier color signal of each sample at that time is divided into a U-axis component and a V-axis component, and these symbols are shown in order. For example, in field 0, line m1 sample (n-1), it is -0, but the actual value of the carrier color signal at this time is -Ucos45° + V 5ln45°, assuming the color difference signal is (U, V). It is. Next, in FIG. 10, when the reproduction field number is 0 and the reference field number changes from 0 to 7,
FIG. 11 shows how the carrier color signal phase of each sample is processed. In the figure, the underline indicates that the playback field number is O. The line correspondence between the even and odd fields is such that line m of the even field is delayed by 312 lines, such as line (m-1) of the odd field. The value of each term is an inversion control signal, where 0 corresponds to no inversion and 1 corresponds to inversion.

Similarly, the reproduction field number is 1.2.3.4.5.6.
7, respectively, 12.13.14.15.1
6.17.18 The result will be as shown in Figure 6.17.18. FIG. 19 summarizes these relationships. In the same figure, whether the burst phase is the same or different for the reproduced signal and the reference signal, and whether the angular difference between the sampling axes is 0 degrees, -80 degrees, -180 degrees,
-270 degrees, and if the burst phase is different, the sampling axis of the reproduced signal falls into the 135 degree and -45 degree groups, or the 45 degree and -135 degree groups. Divide by
An inverted control signal is obtained for each -2 point.

As described above, the decoder 116 shown in FIG. 7 realizes the contents shown in FIGS. 11 to 18. In this way, whether it is high-speed playback across the track in mode 1, still or slow playback in mode 0, or high-speed on-track playback using a movable head, all playback signals will be digital M/M along with the reference signal. It can be converted to a PAL signal and a color image can be reproduced.

The digital M/PA output to the path 42 in Figure 2 in this way
The L signal is converted into an analog M/PAL signal by the DA means 43 and output to the terminal 44.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, according to the present invention, the wasted space on the tape for two lines per field is reduced, and the recording time for a given tape length can be increased. In addition, since it is possible to obtain a high degree of correlation between samples,
Image quality deterioration during high-speed playback can be reduced, and clear high-speed playback images can be realized.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a digital M/PAL signal recording device of the present invention, FIG. 2 is a block diagram of an embodiment of a digital M/PAL signal reproducing device of the present invention, and FIG. FIG. 4 is a detailed block diagram of an embodiment of the selection range transition means; FIG. 5 is a detailed block diagram of an embodiment of the selection range reverse transition means; FIG. 5 is a detailed block diagram of the recording video timing generation means; 7 is a detailed block diagram of the carrier color signal inversion means, FIG. 8 is an explanatory diagram showing the operation of the present invention, and FIG. 9 is a detailed block diagram of the reproduction video timing generation means. Figure 4 is an explanatory diagram of the contents of the decoder; Figure 10 is an explanatory diagram of the phase of the carrier color signal;
Figure 1, Figure 12, Figure 13, Figure 14, Figure 15,
Figures 16 and 17. Fig. 18 is an explanatory diagram of the contents of the decoder of Fig. 7, Fig. 19 is an explanatory diagram summarizing the operation of the decoder of Fig. 7, Fig. 20 is an explanatory diagram of terms related to video signals, and Fig. 21 is an explanatory diagram of the contents of the decoder of Fig. 7. FIG. 22 is an explanatory diagram of the sampling axis, and FIG. 23 is an explanatory diagram of the operation of the conventional example. 5... Recording video timing generation means, 9...
Selection range transition means, 33...Selection range reverse transition means,
41... Carrier color signal inversion means, 46... Playback video timing generation means. Name of agent: Patent attorney Haka Awano (1 person) Figure 23 Procedural Amendment September 1, 1989

Claims (5)

[Claims] (1) Input a digital M/PAL signal sampled at four times the color subcarrier frequency, and
A recording line includes at least a part of a line constituting any one field of a PAL signal, an in-line recording sample includes at least a part of a sample constituting any one line in the recording line, A recording apparatus that uses the in-line recording samples of all lines in a line as recording samples, and digitally processes and records the recording samples, the recording apparatus comprising:
The present invention is characterized by comprising selection range transition means for setting the selection range of the recorded samples within the line among the samples constituting the one line to two types of ranges in which two samples have transitioned, according to the field number of the L signal. Digital M/
PAL signal recording device. (2) A device for reproducing a medium recorded by the recording device according to claim 1, wherein the reproduced digital M/M/
Returning the sample transitioned by the selection range transition means to the same state as the input of the selection range transition means, depending on the field number of the PAL signal or the reference signal;
A digital M/PAL signal reproducing device comprising a selection range inverse transition means. (3) An apparatus for reproducing a medium recorded by the recording apparatus according to claim 1, wherein the sample transitioned by the selection range transition means is transferred to the selection range inverse transition means for returning the state to the same state as the input of the selection range transition means, and separating the digital M/PAL signal into a luminance signal and a carrier color signal and converting the phase of the carrier color signal to the field number of the reproduced signal and a reference signal. 1. A digital M/PAL signal reproducing device comprising carrier color signal inverting means for performing positive inversion depending on sample numbers, line numbers, and field numbers. (4) An apparatus for reproducing a medium recorded by the recording apparatus according to claim 1, wherein the sample transitioned by the selection range transition means is transferred to the A selection range inverse transition means is provided for returning the selection range to the same state as the input of the selection range transition means, and the selection range is changed to the state of a specific field number regardless of the field number of the playback signal during a high-speed playback mode in which tracks are played back across the track. A digital M/PAL signal reproducing device characterized in that a range inverse transition means is set. (5) An apparatus for reproducing a medium recorded by the recording apparatus according to claim 1, wherein the sample transitioned by the selection range transition means is transferred to the selection range inverse transition means for returning the state to the same state as the input of the selection range transition means, and separating the digital M/PAL signal into a luminance signal and a carrier color signal and converting the phase of the carrier color signal to the field number of the reproduced signal and a reference signal. The carrier color signal inverting means performs positive inversion depending on the sample number, line number, and field number of the carrier color signal, and when in high-speed playback mode in which the signal is played back across the track, the color signal of a certain field number is inverted independently of the field number of the playback signal. A reproducing device for a digital M/PAL signal, characterized in that the selection range inverse transition means is set in a state.