JPH04302293A - Video signal recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent picture quality from being degraded in transmitting video signals in the case of dubbing or the like. CONSTITUTION:TDM digital signals reproduced from a reproducing side VTR by an output connector part 48 are extracted, connected to an input connector part 19 of an input side VTR and supplied through terminals T2, of selector parts 18a and 18b to a synchronizing signal addition processing part 20. The signals are supplied to heads 33a and 31b after executing D/A conversion and FM modulation or the like, dubbing recording can be executed to a magnetic tape 34 and it is not necessary to generate base band video signals and to transmit them between equipments. Thus, since dubbing is executed in this way, dubbing signals are not passed through a TDM decoder 44 of a reproducing system, D/A converters 45Y, 45B and 45R, LPF 46Y, 46B and 46R, LPF 12, 15B, 15R of a recording system, A/D converters 13, 16B and 16R, circuits such as a TDM encoder 17 or the like, other additional operational amplifiers or various filters, and the picture quality degradation of the dubbing signal is almost eliminated.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention applies to HDT such as high-definition television.
A video signal recording and reproducing device suitable for recording and reproducing V signals (VT
R).

0002

2. Description of the Related Art In VTRs that record and reproduce HDTV signals, such as high-definition signals, especially for consumer devices, chroma signals are line-sequentialized, the time axis is compressed, and time-division multiplexed with luminance signals. Time
A method is being considered in which the signal is divided into a plurality of channels and recorded.

Specifically, analog baseband video signal inputs consisting of a luminance signal and first and second chroma signals are each converted into digital signals. The luminance signal is distributed line by line into two channels, and the time axis is expanded by the memory means, and each chroma signal is vertically filtered to make it color difference line sequential, and the time axis is compressed by the memory means.

[0004] Then, the time-axis expanded luminance signal and the color-difference line sequential and time-axis compressed chroma signal are time-division multiplexed to form a TDM signal, which is then subjected to predetermined shuffling processing,
After addition of a synchronization signal and a burst signal, the signal is converted to an analog signal, supplied to an RF analog system, subjected to FM modulation, and recorded on a magnetic tape by a magnetic head. In addition, in the reproducing system, conversely, the FM data is read by a magnetic head.
After being demodulated, it is converted into a digital signal and sent to the TBC circuit (T
ime Base Corrector (time axis correction circuit), then undergoes deshuffling and TDM decoding processing, is converted into an analog signal, and is converted into a luminance signal and a first
, the second chroma signal is output as an analog baseband video signal.

[0005]

[Problem to be Solved by the Invention] When dubbing is performed between a plurality of VTRs using such a recording method, the video recorded on the magnetic tape is first performed by performing the above-described playback operation on the playback VTR. The signal is output as an analog baseband video signal, and the VTR on the playback side performs the above recording process and records it on a magnetic tape.

However, in such a system, the video signal passes through both the reproduction circuit and the recording circuit and is dubbed. In other words, each time the video signal is dubbed, it undergoes various processing in analog circuits such as low-pass filters and operational amplifiers, A/D converters, D/A converters, and chroma vertical filters and memory circuits in TDM encoders and TDM decoders. Since this is executed, there is a problem that this causes a signal delay difference between Y and C of the dubbing signal and deterioration of image quality.

[0007]

[Means for Solving the Problems] In view of these problems, the present invention converts an analog video signal consisting of a luminance signal and first and second chroma signals into a digital signal and performs predetermined encoding processing. , a recording system configured to supply a signal that has been converted back into an analog signal and subjected to a predetermined modulation process to a head section and recorded on a recording medium; after demodulating the signal, converting it into a digital signal, performing predetermined decoding processing, and further converting it into an analog signal and outputting it as an analog video signal consisting of a luminance signal and first and second chroma signals. In a video signal recording and reproducing apparatus, the video signal recording and reproducing apparatus includes an output means for outputting a reproduced signal at a predetermined stage before decoding processing in the reproducing system, and an output means for outputting the reproduced signal from the outside to a predetermined portion subsequent to the encoding processing section that performs encoding processing in the recording system. This device is provided with means for inputting a reproduced signal.

[0008]

[Operation] When dubbing is performed between VTRs that have such a configuration, for example, a signal that has not been decoded on a TDM signal is output from the playback VTR, and then encoded in the recording VTR. If the video signal is inputted to the input means at the latter stage of the section, the video signal only needs to pass through the minimum necessary circuit system during dubbing.

[0009]

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 8. FIG. 1 is a block diagram showing the circuit configuration of the VTR of this embodiment.

In FIG. 1, 10 indicates a signal processing section of the recording system, and 11 is an input terminal for a luminance signal Y demodulated from an HDTV signal, and the signal from this terminal 11 is passed through a low-pass filter 12 to an A/D It is supplied to converter 13. Further, 14B and 14R are input terminals for chroma signals (color difference signals R-Y:CR, B-Y:CB) obtained by demodulating the HDTV signal, and the signals from these terminals 14B and 14R are filtered through low-pass filters 15B and 15R, respectively. The signal is supplied to A/D converters 16B and 16R via. The signals converted into digital signals by the A/D converters 13, 16B, and 16R are input to the TDM encoder 17, where the time-axis expanded luminance signals and the time-axis compressed luminance signals are converted into color difference line sequential and time-axis compressed signals. 2-channel TDM with time division multiplexed chroma signals
A signal is generated.

The TDM encoder 17 is configured as shown in FIG. That is, A/D converters 13, 16B,
The outputs of 16R are supplied to line memories 50, 51, 52, and 53 in the TDM encoder 17, respectively. In addition, the synchronization signal separated from the HDTV signal is input to the input terminal 5.
4 and is supplied to the control circuit 55. In this control circuit 55, various control signals and clock signals (fA, fB,
, fC, etc.).

The signal taken out from the line memory 51 and the line memory 53 by the clock from the control circuit 55
The signals taken out from the frame memory 59 are combined by an adder 57 and supplied to a frame memory 59. Further, the signal taken out from the line memory 50 and the signal taken out from the line memory 52 by the clock from the control circuit 55 are sent to the adder 58.
are combined and supplied to the frame memory 59.

[0013] Here, the input terminals 11, 14B,
Analog baseband video signal Y supplied to 14R,
CB , CR are shown in FIGS. 3(a), (b), and (c),
These signals have frequencies fA and fB supplied from the control signal 55 in the A/D converters 13, 16B, and 16R.
sampled by the sampling clock of A
/D conversion and written into line memories 50, 51, 52, and 53.

The frequency fA of the sampling clock output by the control circuit 55 is, for example, an integer ratio as simple as possible of 74.25 MHz, which is the basic clock of high-definition, and the horizontal frequency of high-definition (fH1=3).
For example, fA = (3/5) x 74.25 = 44.55M
Hz=1320fH1. Further, the frequency fB is selected to be 1/4 of fA.

That is, by providing the reference oscillator 56 with a frequency of 44.55 MHz and supplying the clock signal from the reference oscillator 56 to the control circuit 55, the clock signal with the frequency fA is directly output. At the same time, the clock signal having the frequency fB can be outputted by dividing the supplied signal into 1/4.

As a result, the luminance signal Y and the chroma signal C
As shown in FIG. 3, B and CR are sampled at 1320 and 330 samples per horizontal scanning line, respectively, and written into line memories 50, 51, 52, and 53. Note that writing is performed using each horizontal synchronization signal as a start signal, and data is written into the line memories 50 and 51 alternately every horizontal period. Further, this written signal is read out using a clock signal of frequency fC, thereby expanding and contracting the time axis, and a so-called TDM signal as shown in FIGS. 3(d) and 3(e) is formed.

Here, the clock frequency f of this TDM signal
C, the number L of horizontal scanning lines per frame, and the number S of samples per horizontal scanning line are selected as follows. That is, when forming a TDM signal from the above-mentioned high-definition signal, since the apparatus of this embodiment performs two-channel simultaneous recording as described later, (1125 x 1320) / (44.55 x 106) =
(L×S)/2fC must hold, where L,
The value of S is selected according to the characteristics of the VTR, for example, L=
1332, S=1500 recording format, fC =29.97MHz=880fH1= (37/
55) becomes fA.

Therefore, the clock signal of this frequency fC is supplied to the line memories 50, 51, 52, 53, and the chroma signals CB, 53 written to the line memories 52, 53 from, for example, 50 clocks after the horizontal synchronization signal are supplied to the line memories 50, 51, 52, 53.
280 samples of the effective screen period of CR are read out, followed by 1120 samples of the effective screen period of the luminance signal Y written in the line memories 50 and 51 and 100 samples of the synchronization period. This results in Figure 3 (
d) A two-channel (a, b) TDM signal is formed as shown in (e). Note that reading is performed using every other horizontal synchronization signal as a start signal. Also, since the frequency fC is larger than (1/2) fA, the actual TD
The length of one horizontal period of the M signal is somewhat shorter than twice that of the high-definition signal.

The TDM signals thus formed are sequentially written into the frame memory 59, and the signals written into the frame memory 59 are read out using a clock signal of frequency fC, and are sent to one side of each of the selector sections 18a and 18b in FIG. is supplied to terminal T1 of. Further, a TDM signal from the outside can be supplied to the other terminal T2 of each of the selector sections 18a and 18b via an input connector section 19.
The connection terminal 8b is configured to be switched between terminals T1 and T2 by a control signal from a system controller (not shown).

The signals passed through the selector sections 18a and 18b are input to the synchronization signal addition processing section 20, and the two-channel TDM signal generated by the above-mentioned TDM encoder 17,
Alternatively, the horizontal synchronization signal H, vertical synchronization signal V, burst signal BST, and ID signal as shown in FIGS. Predetermined signals such as SID, AGC/clamp reference SREF, ramp signal SR, etc. are added as necessary. Incidentally, the ramp signal SR is added to the recorded signal so that it can be detected during reproduction and linearity correction of the reproduced signal can be performed.

Furthermore, a synchronization signal synchronized with the two-channel TDM signal can also be input from the input connector section 19, and this synchronization signal is taken out by the recording system timing generation section 21 and sent to the TDM encoder 17 and the synchronization signal addition. It is designed so that it can be supplied to the processing section 20.

The outputs of channels a and b of the synchronization signal addition processing section 20 are converted into analog signals by D/A converters 22a and 22b, respectively, and supplied to an emphasis and FM modulation circuit 23, where they are subjected to emphasis processing and FM modulation. The signal is supplied to the magnetic head section 30. Note that the D/A converters 22a and 22b are supplied with a clock having a frequency fC from the control circuit 55 described above.

The magnetic head unit 30 is configured as shown in FIG. 5, for example, and the signals of channels a and b, which have been subjected to emphasis processing and FM modulation in the emphasis and FM modulation circuits 23 (23a, 23b), are sent to recording amplifiers, respectively. 31a, 31b, recording/playback switch 32
Heads 33a, 3 on the head drum via a, 32b
3b and is recorded on the magnetic tape 34. Further, the reference signal from the control circuit 55 described above is supplied to the servo circuit 35, and the spindle motor 36 of the head drum is driven by the signal from the servo circuit 35. Furthermore, a signal from the servo circuit 35 is supplied to a capstan motor 37, which drives a capstan 38 for transporting the magnetic tape 34.

Here, from the frame memory 59 in the TDM encoder 17 described above, the heads 33a, 33
The signals of every other horizontal period written in the frame memory 59 during the first scanning (first segment) of the magnetic tape 34 in FIG. During the period (second segment), reading is performed so that the signals of every other horizontal period remaining are sequentially extracted, and at this time, a reference signal of frequency fD = 60 Hz from the control circuit 55 is sent to the servo circuit 35. supplied, the head 33a,
33b is rotated at a frequency fD, and during this period, the magnetic tape 34 is transferred so as to obtain a predetermined track pitch.
4, recording is performed in a recording pattern in which one frame has two channels and four segments, as shown in FIG. 6, for example.

That is, the signal processing circuit 10 of the recording system described above
As shown in FIGS. 7(a) and 7(b), for example, a TDM signal is formed by being divided into an a channel consisting of a signal in an even-numbered horizontal period and a b channel consisting of a signal in an odd-numbered horizontal period. . In addition, here this T
In the DM signal, luminance signals and chroma signals belonging to the same horizontal period are time-division multiplexed.

[0026] For example, the first 40, 4 of the effective screen
The signal of the first horizontal period is recorded in the first scan (first segment), the signal of the following 42nd and 43rd horizontal period is recorded in the second scan (second segment), and the following is the 2nd horizontal period part. The signals are distributed alternately to the first and second segments and recorded.

As a result, the signal of the effective screen of the first field of the 40th to 557th horizontal period is recorded in the first and second segments. Furthermore, the signal of the effective screen in the second field of the 603rd to 1120th horizontal periods can be obtained in substantially the same way as above by reversing the correspondence between the odd and even horizontal periods and the first and second channels. It is recorded in the third and fourth segments. In this way, one frame of signal is distributed into the first to fourth segments, and by recording with an offset of, for example, 0.5 horizontal period between each segment, a 2-channel 4-segment signal as shown in FIG. Recording is done by

In the recording pattern shown in FIG. 6, in the front side of the recording range of the video signal in the head scanning direction,
As shown in the figure, a recording range for digital audio signals is provided. Here, each track has a wrapping angle of 180 degrees and corresponds to 166.5 horizontal periods, of which 23 horizontal periods (24.86 degrees) are the recording range of the audio signal. Approximately 1.2 degrees of the front end is considered a margin, and the next 2
．． 0 degrees is considered the preamble part, followed by the third part at 8.0 degrees.
, a fourth channel digital audio signal is recorded. The next 1.2 degrees is considered the postamble section and continues.
1.2 degrees is used as a guard portion between audio signals. See you next time
2.0 degrees is the preamble section, the following 8.0 degrees is where the digital audio signals of the first and second channels are recorded, and the following 1.26 degrees is the postamble section.

Further, following the audio signal recording range, a guard section between the audio signal and the video signal for two horizontal periods is provided, and in the subsequent 11 or 11.5 horizontal periods, vertical synchronizing signals V1, V2, A recording area for information signals such as an AGC reference level signal, a clamp level signal, and a ramp signal is provided, after which TDM signals of 130 horizontal periods are recorded as shown in the figure according to the above-mentioned distribution. In addition, after this TDM signal recording range, 0.5 or 1
A horizontal period margin is provided.

During reproduction, the above-mentioned frequency fD
A part of the reproduction signal from the heads 33a, 33b is supplied to the servo circuit 35 together with the reference signal, and the traveling servo of the heads 33a, 33b and the magnetic tape 34 is performed so as to match the recording pattern. After the signals recorded on the magnetic tape 34 are reproduced by the heads 33a and 33b, a part of the signals are supplied to the servo circuit 35 via the recording/reproduction changeover switches 32a and 32b, and the signals are also supplied to the reproduction amplifiers 39a and 39b. De-emphasis and FM demodulation circuits 41a and 41 in the signal processing unit 40 of the reproduction system
b.

In the reproduction system signal processing section 40 in FIG. 1, 41 is a de-emphasis and FM demodulation circuit (41
a, 41b), and the de-emphasized and FM demodulated signals, that is, the a-channel reproduction signal and the b-channel reproduction signal, are converted into digital signals by A/D converters 42a and 42b, and then supplied to the TBC circuit 43. Time axis correction is performed. Then, a signal (a
channel TDM signal, b channel TDM signal) is T
The DM decoder 44 decodes the luminance signal Y and chroma signals CB and CR, which are respectively D/
After being converted into analog signals by A converters 45Y, 45B, and 45G, they are output as analog baseband video signals from output terminals 47Y, 47B, and 47R via low-pass filters 46Y, 46B, and 46G.

Furthermore, the output signal (a) from the TBC circuit 43
(channel TDM signal, b-channel TDM signal, synchronization signal, etc.) are also supplied to an output connector section 48 so that they can be output to external equipment.

The TDM decoder 44 is configured as shown in FIG. Supplied. The signals taken out from the line memories 61 and 62 are then combined by an adder 65 and supplied to the D/A converter 45Y. Further, the signals read from the frame memory 60 are supplied to the line memories 63 and 64, and the signals taken out from the line memories 63 and 64 are sent to the interpolation circuits 66 and 67.
The signal is supplied to D/A converters 45B and 45R via. Further, a synchronization signal from the control circuit 55 is output to the output terminal 68.

The control circuit 55 of the TDM encoder 17 serves as a control circuit that supplies operating clocks to each circuit section.
are also used, and clock signals of frequencies fA, fB, and fC are supplied. That is, in the TDM decoder 44, the time axis of the luminance signal is compressed and combined to return two channels to one channel, and the time axis of the chroma signal is expanded, and then the color signal thinned out during encoding is processed. is restored by interpolation circuits 66 and 67.

The VTR of this embodiment configured as described above
is very suitable for dubbing. In other words, since it has an output connector section 48 that can take out the output (TDM digital signal) of the TBC 43 of the reproduction system, and an input connector section 19 that can input the signal after the TDM encoder 17, When dubbing with multiple VTRs of this embodiment, T
This means that the signal can be transmitted as a DM digital signal.

That is, the TDM digital signal reproduced by the output connector section 48 is extracted from the VTR on the reproduction side, connected to the input connector section 19 of the VTR on the input side, and transmitted through the T2 terminals of the selector sections 18a and 18b. The synchronization signal is supplied to the synchronization signal addition processing section 20. Then, by performing D/A conversion, FM modulation, etc., the head 33a,
33b to perform dubbing recording on the magnetic tape 34, there is no need to take the trouble to generate a baseband video signal and transmit it between devices.

When dubbing is performed in this way, the dubbing signal is transmitted to the TDM decoder 44 and D/A converter 45 of the reproduction system.
Y, 45B, 45R, low pass filter 46Y, 46B
, 46R, recording system low-pass filters 12, 15B,
15R, A/D converters 13, 16B, 16R, TDM encoder 17, etc., and other accompanying operational amplifiers and various filters. Deterioration due to integration of delay differences between the signal Y, chroma signals CB and CR, chroma vertical filter processing, redundant passage through enhancers, etc.) is almost eliminated.

Furthermore, since the output of the TBC circuit 43 is taken out on the reproduction side, the jitter present in the reproduced RF signal is removed and outputted from the output connector section 48. Furthermore, since it is transmitted using digital signals, it has the advantage of being resistant to noise.

In this embodiment, the signal from the input connector section 19 is supplied to the synchronization signal addition processing section 20;
Assuming that the M digital signal is 8 bits and the number of quantization bits of the video signal is 8 bits (generally, 8-bit quantization is performed on video signals), a synchronization signal is added at the same time (that is, a 9-bit signal This is because the data is not being transmitted. In other words, since a synchronizing signal is not required especially for signal processing after the TBC circuit 43, it is preferable that the output of the TBC circuit 43 be 8 bits in consideration of saving the number of bits of the memory means. Due to these circumstances, the TDM digital output lacks the synchronization signal, so in the recording system, the TDM digital input signal from the input connector section 19 is processed by the synchronization signal addition processing section so that the synchronization signal can be added when input. 20, and a synchronization signal outputted from the reproduction system along with the TDM digital input signal is also input and supplied to the synchronization signal addition processing section 20 so as to be added to the input TDM digital input signal. This is what we are trying to do.

By the way, as mentioned above, the synchronization signal addition processing section 20 adds burst signals, ID signals, ramp signals, AGC/clamp reference signals, etc. in addition to the vertical and horizontal synchronization signals, and these are added to the TBC circuit 43. Since it is included in the 8 bits of the TDM digital output signal at the stage of output from the synchronous signal addition processing unit 2 after input.
When set to 0, these signals are stored as they are. However, if the reproduction system is configured such that the video signal from the output connector section 48 does not include these reference signals, the synchronization signal addition processing section 20 adds these reference signals accordingly. It goes without saying that the recording system must be configured in this manner. Note that, of course, the TDM digital input signal may be transmitted as a 9-bit signal and no additional processing of horizontal and vertical synchronization signals may be performed on this TDM digital input signal.

FIG. 9 shows another embodiment of the present invention, in which a VT can transmit dubbing signals using analog signals.
It is a block diagram of R. In the figure, the same reference numerals as in FIG. 1 indicate the same parts. In this embodiment, the reproduction system is provided with an output connector section 70 for taking out the output (analog signal) of the de-emphasis and FM demodulation circuit 41, and the input connector section 71 provided in the recording system is connected to the D/A converter 2.
Selector parts 72a, 7 provided at the rear stage of 2a, 22b
The input signal is supplied to the T2 terminal of 2b.

That is, in this embodiment, during dubbing, the signal reproduced by the reproducing VTR is extracted to the outside before converting it into a digital signal, and is sent to the emphasis and FM modulation circuit 23 of the recording VTR. Direct input is possible, and the dubbing signal path can be shortened, thereby preventing signal deterioration.

However, in the case of this embodiment, the reproduced signal is T
Since the jitter component does not pass through the BC circuit 43, there is a possibility that the jitter component remains in the transmitted dubbing signal as it is, but this can be covered by the performance of the reproduction RF processing section (particularly the PLL circuit). In this embodiment, since the signals are analog signals, all the synchronization signals and various reference signals can be transmitted on one line (coaxial cable) for each channel, and the synchronization signals can be transmitted on separate lines for adding synchronization signals. It has the advantage that it does not need to be transmitted.

By the way, in the VTR of the present invention as explained in FIGS. 1 and 9, the reference signal (see FIG. 4) that is reproduced together with the actual video signal during transmission such as during dubbing, etc.
are also transmitted at the same time. That is, in the embodiment of FIG. 1, these reference signals are included within 8 bits of the TDM signal, and in the embodiment of FIG.
transmitted by a signal.

Therefore, on the recording side, reference signals such as the distorted ramp signal SR and AGC/clamp reference signal SREF are also recorded simultaneously with the reproduced video signal. In other words, the distortion information, level, and time axis fluctuation information of the signal on the playback side are recorded by incorporating them as they are. Then, when playing the dubbed magnetic tape,
Not only the distortion caused by the reproduction operation but also the distortion information caused by the reproduction operation during dubbing is expressed in the reproduction signal of the reference signal such as the ramp signal SR and the AGC/clamp reference signal SREF, and therefore the reproduced reference signal Accordingly, the most appropriate correction operation can be performed during the reproduction operation.

Although the VTR of the present invention is constructed as a recording/reproducing machine as shown in the above embodiment, a recording-only machine may be constructed by including the recording system circuit, input connector section, and recording head of the above embodiment. The present invention foresees that a reproduction-only device may be constructed by including the reproduction system circuit, output connector section, and reproduction head of the above embodiment. In particular, such recording-only machines and playback-only machines have the advantage of being inexpensive to produce because they do not require input/output analog circuits or circuit systems that use other memory means such as encoders and decoders. It is suitable as a recording device and a reproducing device. Further, the VTR to which the present invention is applied is T
The present invention is not limited to devices that perform DM signal recording.

[0047]

As explained above, the video signal recording and reproducing apparatus of the present invention includes means for outputting a predetermined reproduction signal before decoding processing in the reproduction system, and encoding processing in the recording system corresponding to this output means. By providing an external playback signal input means in a predetermined section after the encoding processing section that performs the dubbing, it is possible to eliminate unnecessary circuitry as a dubbing signal path, effectively preventing image quality deterioration during transmission. There is an effect that it can be done.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a block diagram of a TDM encoder of this embodiment.

FIG. 3 is an explanatory diagram of an analog baseband video signal and a TDM signal.

FIG. 4 is an explanatory diagram of various reference signals.

FIG. 5 is a configuration diagram of a head device section of this embodiment.

FIG. 6 is an explanatory diagram of a recording pattern according to this embodiment.

FIG. 7 is an explanatory diagram of a recording signal according to the present embodiment.

FIG. 8 is a block diagram of a TDM decoder of this embodiment.

FIG. 9 is a block diagram showing another embodiment of the present invention.

[Explanation of symbols]

10 Recording system signal processing section 17 TDM encoder 19, 71 Input connector part 18a, 18b Selector section 20 Synchronization signal addition processing section 40 Reproduction system signal processing section 43 TBC circuit 44 TDM decoder 48, 70 Output connector part

Claims (1)

[Claims] Claim 1: A signal in which an analog video signal consisting of a luminance signal and first and second chroma signals is converted into a digital signal, subjected to predetermined encoding processing, and then converted back to an analog signal and subjected to predetermined modulation processing. a recording system configured to supply a signal to a head section and record it on a recording medium; and a recording system that performs a predetermined demodulation process on the signal read from the recording medium by the head section, converts it into a digital signal, and performs a predetermined decoding process. In a video signal recording and reproducing apparatus, the video signal recording and reproducing apparatus has a reproducing system that converts the signal into an analog signal and outputs the analog video signal as an analog video signal consisting of a luminance signal and a first and second chroma signal, and performs decoding processing in the reproducing system. A video signal recording and reproducing apparatus characterized in that a means for outputting a predetermined reproduction signal and an input means for inputting the reproduction signal from the outside are provided at a stage subsequent to an encoding processing section that performs encoding processing of the recording system.