JPS61256888A - Video signal recorder - Google Patents

Abstract

PURPOSE:To record a video signal and other information signal simultaneously by a simple construction by providing a means for replacing a color information signal of a part of the video signal by the other information signal to record. CONSTITUTION:A sound signal is written in a memory 3 through a time base compression circuit 2. A video signal is separated in an LPF 4 and a BPF 5. A brightness information signal is inputted to an FM modulating circuit 6 and a color information signal is inputted to a frequency converting circuit 7. From a vertical synchronous separating circuit 10, a vertical synchronous signal is inputted to a recording control circuit 11. According to an odd number field recording control signal from a terminal A, a switch 9 is turned on and the color information signal of the odd number field is inputted to a mixer 8. According to an even number field recording control signal from a terminal B, a switch 13 is turned on and a sound information signal is inputted to the mixer 8 through a frequency converting circuit 12. In the mixer 8, to a brightness information signal, the color information signal or the sound information signal is frequency multiplied and recorded on the first and second tracks on a magnetic disk 19 by magnetic heads 16, 17.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a video signal recording device for recording a color information signal and a luminance information signal on a recording medium.

[Summary of disclosure]

This specification and the drawings describe an apparatus for recording a video signal including a color information signal and a luminance information signal, in which the color information signal is thinned out from the video signal, and other information signals such as an audio information signal are used instead of the color information signal. The present invention discloses a technique that enables the video signal recording apparatus to record other information signals by inserting the information signal into the video signal recording apparatus.

[Conventional technology]

Conventionally, when trying to simultaneously record a third information signal, such as an audio signal, on a video signal that is a mixture of a color information signal and a luminance information signal, in a VTR, for example, the video signal is recorded on a helical track using a rotating head. In the past, audio signals were recorded using fixed heads on separate audio recording tracks.

Recently, when recording a video signal, the audio signal is frequency multiplexed and recorded on a helical track using a rotating head, and an audio signal recording head is installed on a rotating drum separately from the video signal recording head. A method was devised to record audio signals deep within the body, and it became a fixed method for recording audio signals.

It has now become possible to record audio signals extremely well without using a card.

Alternatively, in recent years, electronic cameras that record still image information on recording media such as magnetic disks have become a hot topic in place of silver halide cameras, but when these electronic cameras record audio signals along with color video signals of still images. The idea was to add more recording trucks, drives, and drives for recording audio signals.

[Problem that the invention seeks to solve]

However, when recording audio signals using a fixed head, for example, if the recording density is increased, the running speed of the tape will be extremely slow, and the relative speed with the tape will be extremely slow, making it difficult to record audio signals. It becomes impossible to do so.

In addition, in a method of recording an audio signal using a rotating disk, the audio signal is frequency-multiplexed with a video signal,
When recording with a rotating drum, it is difficult to eliminate crosstalk because the audio signals are frequency multiplexed, and this crosstalk tends to deteriorate the audio and video signals. When recording audio signals deep into the tape by adding additional heads for recording only, the addition of audio signal recording heads complicates the structure, increases costs, and adversely affects the tape. This becomes a problem.

Further, in electronic cameras, problems such as an increase in cost and a decrease in the number of images that can be taken per disk arise due to the addition of recording tracks and heads for audio recording.

The present invention is intended to solve the above-mentioned problems, and it is an object of the present invention to provide a new video signal recording device that is simple in construction and low in cost.

[Means to solve the problem]

The video signal recording device of the present invention is a device for recording a video signal including a color information signal and a luminance information signal, and includes means for replacing the color information signal of a part of the video signal with another information signal and recording it. [Function] In a device that records video signals, it is possible to record other information signals at the same time as video signals with a simple configuration without adding new tracks or drives for recording other information signals. It can be recorded.

〔Example〕

Hereinafter, the present invention will be explained based on examples.

Here, an example in which the present invention is applied to a still image recording device such as an electronic camera will be described as an embodiment.

In the NTSC system, which is a color television system, 1
The field is formed by 262.5 scanning lines, and one frame, or one screen, is completed by scanning the field twice. A method is adopted in which video signals for one frame are recorded on one recording track on a magnetic tape, and one frame's worth of video signals is recorded on two recording tracks.

Similarly to the recording method of an electronic camera, a video signal for one field is recorded on one recording track on a magnetic disk.

However, since the main purpose of an electronic camera is to record and reproduce still images, there are two possible recording and reproduction methods in the above system.

First, the first method records the video signal for one frame divided into each field using two recording tracks, and during playback, the signals on each recording track are played back alternately to obtain a still image. The second method is to record the video signal for one field on one recording track, and when playing back, obtain a still image by repeatedly playing back the signal recorded on that one track. It's a method.

Below, we will exemplify the case where the present invention is applied to an electronic camera that has two recording and reproducing methods as described above. Figures 1 and 2 show how one frame is recorded using two recording tracks on a magnetic disk. A recording system in which the present invention is applied to a system in which a still image is obtained by recording video signals for 30 minutes and reproducing them alternately during playback (Fig. 1)
2 and 3 are timing charts showing these operation patterns.

In FIG. 1, first, in order to eliminate slight time lag when recording a video signal and an audio signal, a time-base compressed audio signal is temporarily stored in a memory. The operation will be explained below.

When the audio person Quadrigar (a) shown in FIG. 3 is input to the memory control circuit 1 shown in FIG. 1, the write signal (b) shown in FIG. 3 is outputted from the memory control circuit 1 to the memory 3. The audio information signal is written into the memory 3 while the signal is at the 7S level, and the audio signal of a predetermined time input during this time is compressed by the time axis compression circuit 2 into an audio information signal of 1/60 seconds. It is compressed and written to memory 3.

For example, if the compression ratio of the compression circuit 2 is 1/e 00, the audio information signal for 10 seconds is compressed to 1/60 second and written to the memory 3.

After the time-base compressed audio signal is once stored in the memory as described above, video signal recording processing is performed.

In Figure 1, the input video signal is passed through a low pass filter (LPF) 4 and a band pass filter (BPF).
) 5 into a luminance information signal and a color information signal, the luminance information signal is modulated by an FM modulation circuit 6, and the color information signal is converted by a frequency conversion circuit 7 into a color subcarrier to a low frequency. The FM-modulated luminance information signal is input to the mixer 8, and the frequency-converted color information signal is input to the switch 9.

This switch 9 is a changeover switch for multiplexing the odd field color information signal into the odd field brightness information signal and the audio information signal into the even field brightness information signal together with the switch 13 described later.
1. These operations will be explained below.

A vertical synchronization signal as shown in FIG. 3(C) is separated from the input video signal by a vertical synchronization separation circuit 10 and is input to a recording control circuit 11. Here, when a recording trigger as shown in FIG. 3(d) is input to the recording control circuit 11, the odd number for one field period is synchronized with the fall of the vertical synchronizing signal of the odd field immediately after that. A field recording control signal (e) is outputted from the output terminal A shown in FIG. 1 and inputted to the switch 9 and the gate circuit 14 described later.

At the next falling edge, the even field recording control signal (f) for one field period is also output from the output terminal B shown in FIG. 1, and input to the switch 13, memory control circuit 1, and gate circuit 14 .

As mentioned above, switch 9 is ON only while the odd field recording control signal (e) output from terminal A is at high level.
At this time, the frequency-converted odd field color information signal is input to the mixer 8. Further, the switch 13 is turned on only during the period when the even field recording control signal (f) outputted from the terminal B is at a high level, and at the same time, the read signal outputted from the memory control circuit 1 is switched on while the even field recording control signal (f) is at a high level. In synchronization with the signal (f), it becomes high level as shown in FIG. 3 (2), and during this period, the audio information signal is read from the memory 3 and t! 5'2! After being frequency-converted in the frequency conversion circuit 12 to the same frequency band as the color information signal which has been frequency-converted to a low frequency band, the signal is input to the mixer 8 because the switch 13 is in the ON state.

As described above, since the color information signal and the audio information signal are input to the mixer 8 by the switches 9 and 13 during the odd field recording period and the even field recording period, respectively, the mixer 8 converts the brightness information signal of the odd field. The odd field color information signal is frequency-multiplexed, the even field luminance information signal is frequency-multiplexed, and the audio information signal is amplified by a recording amplifier 14 and then input to a gate circuit 15.

The gate circuit 15 is controlled by the recording control circuit 11, and during a period when the odd field recording control signal (e) input to the input terminal C of the gate circuit 15 is at a high level, the recording signal of the odd field is output to the output terminal E. output from the magnetic head 16 and the motor 18 3600 times/
During the period when the even field recording control signal (f), which is recorded on the first track on the magnetic disk 19 which is rotating at a rate of 1" and is input to the input terminal, is at level 71, the even field recording signal is output to the output terminal. The data is outputted from F and recorded on the second track on the magnetic disk 19 by the magnetic field 17.

In this way, the brightness information signal and the color information signal of the odd field are transferred to the first track on the magnetic disk 19 and the second color information signal.
Even field luminance information signals and audio information signals are recorded on the track.

In FIG. 2, signals reproduced by magnetic heads 16 and 17 are input to input terminals G and H of switch 20, respectively. The switch 20 is a switch for alternately switching the reproduced signals of the first track, the second track, and the second track in synchronization with the vertical synchronization signal, and is normally connected to the G side shown in Fig. 2, and is connected to the magnetic head. The first tiger regenerated by 16,
The second reproduction signal, that is, the odd field reproduction signal, is amplified by a reproduction amplifier 22 via a switch 20 and then input to a bypass filter (HPF) 26 and a switch 27. Since the switch 27 is normally in the OFF state,
A brightness information signal is separated from the odd field reproduction signal in a bypass filter (HPF) 26, demodulated by an FM demodulation circuit 29, and then input to a switch 30. The switch 30 is a switch for switching between an odd field and an even field luminance information signal, and is normally connected in l pieces as shown in FIG. 2, and the demodulated odd field luminance information signal is input to the mixer 25 as it is. Ru.

Furthermore, the reproduction signal of the first track reproduced by the magnetic head 16 is also supplied to the reproduction amplifier 21, and after being amplified here, the low frequency component, that is, the odd field color information signal is extracted by the LPF 23. Frequency conversion circuit 2
4, the signal is converted to the original band and then input to the mixer 25.

Then, in the mixer 25, the reproduced and processed odd-field luminance information signal and color information signal are frequency-multiplexed and output as an odd-field color video signal.

The switching operations of switches 20 and 30 are both performed by the regeneration control circuit 3.
3. The switching operation will be explained below.

A vertical synchronization signal (h) separated by the vertical synchronization separation circuit 32 from the demodulated signal of the luminance information signal is input to the reproduction control circuit 33, and when the reproduction trigger (i) is input, the vertical synchronization signal (h) immediately after the input is input. An odd field reproduction control signal (j) which changes from low level to high level every odd field period in synchronization with the fall of the vertical synchronizing signal of the odd field is outputted from the output terminal K to the switch 20.30.

As mentioned above, the switches 20 and 30 are normally connected to the G side in FIG. At this time, the switch 20 operates to the H side, and the switch 30 operates to the J side.

When the switches 20 and 30 operate as described above, the reproduction signal of the second track reproduced by the magnetic head 17, that is, the even field reproduction signal, is amplified by the reproduction amplifier 22 via the switch 20 connected to the H side. , HP
F26. The signal is supplied to the switch 27.

The luminance information signal is separated from the even field reproduction signal by the HPF 26 and is supplied to the FM demodulator 29 . Here, the even field luminance information signal is delayed by 1/2H period and input to the mixer 25.

The odd field color information signal reproduced and processed by the magnetic head 16 as described above is input to the mixer 25, and the odd field color information signal is combined with the even field luminance information signal in the mixer 25. By frequency multiplexing, even field color information signals that were not recorded during recording are interpolated and output as even field color video signals.

As described above, during reproduction, the reproduction signals of odd and even fields are processed alternately in synchronization with a reproduction control signal synchronized with a vertical synchronization signal and output as a color still image signal for one screen.

Next, the audio signal will be explained.

The reproduction of the audio signal is controlled by the audio reproduction control circuit 34.The audio reproduction control circuit 34 is supplied with an even field reproduction control signal body from the output terminal of the reproduction control circuit 33, as shown in FIG. T-like voice playback trigger (4)
is input to the audio playback control circuit 34, the high level signal of the even field playback signal immediately after the input is extracted for one field period, and is used as the audio playback control signal. Turn on switch 27 only for a period of time.
Set it to N. Then, during the period when the switch 27 is ONL, the even field reproduction signal is supplied to the LPF 2g, the audio information signal whose frequency was converted to a low frequency band during recording is separated by the LPF 28, and the frequency is converted to the original band by the frequency converter 35. be done. Then, the time axis expansion circuit 36 expands the time axis of the original audio signal and outputs it.

The above is a case in which the present invention is used in a method of recording a video signal for one frame using two recording tracks on a magnetic disk, and obtaining a still image by alternately reproducing each of the video signals during playback. This is an example.

As described above, according to this embodiment, in recording and reproducing color still images, it is also possible to record and reproduce audio information without adding new audio signal recording tracks or heads.

Regarding the color information signal, only the color information signal of the odd numbered field was recorded, but since color information does not require much resolution, the color information of the even numbered field should be supplemented with the color information of the odd numbered field as described above. This makes it possible to suppress deterioration in image quality. Also, in this case, the color information signal of the even field is recorded during recording, the audio information signal is multiplexed instead of the color information signal in the odd field, and the color information signal of the odd field is complemented with the color information of the even field during playback. The same effect can be obtained by doing so.

Furthermore, in the embodiment, the audio signal is played back when the audio playback trigger (4) is input to the audio playback control circuit 33, but the audio playback trigger (4) is activated at the same time as the playback trigger (i). The sound signal may be generated, may be generated singly, or may be generated continuously at a predetermined period.By doing so, the audio signal can be played back at any time during still image playback, or repeatedly played back. It becomes possible to

[Description of other embodiments]

Figures 4 and 5 show a method of recording one field's worth of video signals on one recording track on a magnetic disk, and then repeating this twice during playback to obtain one screen. FIG. 6 is a block diagram of a recording system (FIG. 4) and a reproduction system (FIG. 5) when the present invention is used, and FIG. 6 is a timing chart showing an operation pattern.

In FIG. 4, in order to eliminate the time lag when recording the video signal and the audio signal, as in the previous embodiment, the time-axis compressed audio information signal is temporarily stored in the memory. Regarding writing, since it is the same as in the previous embodiment, a description thereof will be omitted.

Once the time-axis compressed audio signal is stored in memory,
The video signal is processed for recording.

In FIG. 4, the input video signal is separated into a luminance information signal and a color information signal by an LPF 40 and a BPF 41, the luminance information signal is modulated by an FM modulation circuit 44, and the color information signal is modulated by a frequency conversion circuit 45 as a color information signal. The carrier wave is converted to a lower frequency. The FM-modulated luminance information signal is input to the mixer 46, and the frequency-converted color information signal is input to the switch 47.

This switch 47 is a changeover switch for alternately multiplexing a color information signal and an audio information signal on the luminance information signal for each horizontal scanning period, and is controlled by an audio recording control circuit 49. These operations will be explained below.

The vertical synchronization separation circuit 42 and the horizontal synchronization separation circuit 43 separate the input video signal into a vertical synchronization signal (fl) and a horizontal synchronization signal (0) as shown in FIG. is the recording control circuit 48, the horizontal synchronization signal (
0) is not input to the audio recording control circuit 49.

Here, first, when a recording trigger as shown in Figure 6 (Q) is input to the recording control circuit 48, the recording control signal as shown in Figure 6 (Q) is synchronized with the fall of the vertical synchronization signal immediately after input. As shown in FIG. 3, the level changes from low level to high level for one field period. This recording control signal (q) is input to an audio recording control circuit 49 and a gate circuit 50, which will be described later.

A horizontal synchronizing signal (0) is input to the audio recording control circuit 49 in advance, and when the recording control signal (q) as described above is input, the recording control signal (Q) is at a high level, that is, when the recording control signal (Q) is at a high level. A horizontal synchronizing signal for one field period is separated as an audio recording control signal <r>. This audio recording control signal <r>
is input to the memory control circuit 37 and switch 47.

The above audio recording control signal (r) is sent to the memo controller 37.
When input, a read signal (1) is output from the memory control circuit 37 to the memory 39, and audio information signals are sequentially read from the memory 39 while the signal is at a low level. That is, the 1/60 second audio information signal stored in the memory 39 is divided into half the number of scanning lines of one field, and the divided signals are read out every even numbered scanning line scanning period.

The switch 47 is a changeover switch for alternately multiplexing the luminance information signal with the color information signal and the audio information signal for each horizontal scanning period, as described above, and is normally not connected to either of them. When the first falling edge of the input audio recording control signal (r) is detected, the switch 47 is connected to the first edge, and the frequency-converted color information signal is input to the mixer 46. Ru. When the next falling edge is detected, it is connected to the L side, and the memory 39 is connected as described above.
The signal read out from the signal is frequency-converted by the frequency conversion circuit 51 to the same frequency band as the color information signal which has been frequency-converted to a low frequency band, and is input to the mixer 46 . Note that the switching operation of this switch 47 is such that recording and recording are alternately switched during a period when the recording control signal (■) is at a high level, but during a period when this signal is at a low level, the switch 47 is not connected to any of them.

As described above, since the color information signal and the audio information signal are alternately input to the mixer 46 in synchronization with the horizontal synchronization signal by the switch 47 during recording, these signals are multiplexed with the luminance information signal in the mixer 46. The signal is amplified by a recording amplifier 52 and then input to a gate circuit 50.

The gate circuit 50 is controlled by the recording control circuit 48. When the recording control signal (q) is input to the gate circuit 50 from the recording control circuit 48, the gate is opened while the signal is at a high level, and the motor 53 controls the 8G OIO.
The data is magnetically recorded by the dot 53 onto a recording track on a magnetic disk 55 which is rotating at a rate of rotations per minute.

In this manner, a signal in which a luminance information signal, a color information signal, and an audio information signal are alternately multiplexed every horizontal synchronization is recorded on the recording track on the magnetic disk 55.

In FIG. 5, a signal regenerated by a magnetic field 53 is amplified by a regenerative amplifier 56 and then an HPF 57. LP
F58 separates the signal into a luminance information signal and a mixed signal of a color information signal and an audio information signal. The separated luminance information signal is demodulated by an FM demodulator 59 and input to a mixer 60 as it is.

Further, the mixed signal of the separated color information signal and audio information signal is input to the switch 61. The switch 61 separates the mixed signal into a color information signal and an audio information signal, and the switching operation is controlled by a reproduction control circuit 63. The operation will be explained below.

A vertical/horizontal synchronization signal (1) as shown in FIG. 6 is separated by a vertical/horizontal synchronization separation circuit 62 from the luminance information signal demodulated by the FM demodulator 59 in the reproduction control circuit 63.
It has been entered. Here, when the regeneration trigger (U) is input to the regeneration control circuit 63, it first detects the vertical synchronization pulse immediately after it, outputs a regeneration control signal (V) synchronized with the horizontal synchronization pulse that follows, and the switch 61 .64 is supplied.

The switch 61 is normally not connected to either side, but when it detects the first fall of the reproduction control signal (v), it connects to the M side shown in FIG. 5, and when it detects the next fall, it connects to the N side. be done. This switching operation is performed alternately in synchronization with the reproduction control signal (V), but during the period when the vertical synchronization pulse is input to the reproduction control circuit 63, the reproduction control signal (V)
During the blank period, it is not connected to anything.

By this switching operation of the switch 61, the color information signal and the audio information signal are separated from the mixed signal, and the color information signal is input to the switch 64 and the IHDL 67, and the audio information signal is input to the frequency conversion circuit 66.

The switch 64 operates in the same way as the switch 61 in response to the playback control signal (v), and when connected to the 0 side shown in FIG. The delayed color information signal is input to the frequency conversion circuit 65.

By operating this switch 64, the audio information signal is multiplexed during recording, and the color information signal recorded during the period when the color information signal is not multiplexed is delayed as described above, thereby making it possible to interpolate the color information signal. .

The color information signal is frequency-converted to a low frequency in a frequency conversion circuit 65 and returned to the original band from the distorted band, and is then multiplexed with the luminance information signal in a mixer 60.
The signal is supplied to the 1 and 1/2 HDL 72 as a reproduced color video signal for one field.

The switch 71 is a switch for generating a color video signal for one frame from the reproduced color video signal for one field obtained as described above, and the switching operation is performed by the field switching control circuit. 73.

The vertical synchronization signal separated by the vertical/horizontal synchronization separation circuit 62 and the playback trigger (U) are input to the field switching control circuit 73.
3 detects the rising edge of the regeneration trigger (u), detects the vertical synchronizing pulse immediately after that, and synchronizes to the high level with the falling edge of the even-numbered vertical syncing pulse, and synchronizes with the falling edge of the odd-numbered vertical syncing pulse. A field switching signal (b) which becomes low level is output to the switch and cheer 1.

When the input field switching signal (B) is at a low level, the switch 71 is connected to the Q side shown in FIG. When it is at high level, it is connected to the R side, and the reproduced color video signal for one field is delayed by 1/2H period by 1/2 HDL 72 and output as an even field reproduced color video signal. As a result, a color still image signal for one screen is obtained.

Next, the audio signal will be explained.

The audio information signal separated by the switch 61 is converted from the low frequency band to the original band by the frequency conversion circuit 66, and is time-axis expanded by the time-axis expansion circuit 70 to the original audio signal. Then, it is input to Chiro 9. The switch 69 is controlled by an audio reproduction control circuit 68.

The audio reproduction control circuit 68 receives the vertical/horizontal synchronization signal (1
) is input, and when an audio playback trigger (X) as shown in FIG. When the fall of the vertical synchronization pulse is detected, an audio reproduction control signal q) which becomes low level is output to the switchboard 9.

The switch 69 is in an OFF state when the inputted audio reproduction side a signal (Y) is at a low level, and is in an ON state only during a high level period, and at this time, a time-axis expanded audio signal is output.

The above is an embodiment in which the present invention is used in a method in which a video signal for one field is recorded on one recording track on a magnetic disk, and one screen is obtained by reproducing the video signal twice during playback. It is.

In this manner, by using this embodiment, it is possible to record and reproduce audio information without adding a new audio signal recording truck or head in recording and reproducing color still images.

Regarding the color information signal, only one horizontal scanning device color information signal was recorded, but since color information does not require much resolution, the signal of the scanning line where color information compensation No. 7 is not recorded is recorded using the above-mentioned method. This can be supplemented with the color information signal recorded as in the above, and deterioration of image quality can be suppressed. Further, in this case, the same effect can be obtained even if the positions where the color information signal and the audio information signal are multiplexed are switched.

Furthermore, in the embodiment, the audio signal is played back when the audio playback trigger (X) is input to the audio playback control circuit 68; ), they may be generated individually, or they may be generated consecutively at a predetermined period.By doing this, you can play the audio signal at any time when playing still images, or It is possible to play it repeatedly.

The present invention has been explained above using embodiments. In the embodiments, a still image recording device such as an electronic camera has been explained as an example, but if it is a device that records and plays back a video signal, It is possible to apply the present invention, and it is not always necessary to make the ratio of multiplexing color information and other information equal. For example, when recording a video signal for one field using three or more recording tracks, a color information signal is recorded on only one recording track, and other information signals are recorded on the other recording tracks. Furthermore, the range of multiplexing of other information can be expanded depending on the purpose.

Further, in the embodiment, audio information has been described as an example of other information to be multiplexed instead of color information, but the information is not limited to this, and it is also possible to multiplex computer control signals and the like.

Further, in the embodiment, other information (audio information) is temporarily stored in the memory, but the luminance information during the period when other information is multiplexed may be stored in the memory or on the recording medium. The information signals can be multiplexed after recording the image signals.

〔Effect of the invention〕

As explained above, according to the present invention, as a video signal recording device as mentioned at the beginning, it is possible to simultaneously record video signals simultaneously with other information signal recording tracks or other information signal recording tracks with a simple configuration, without amplifying the information signal recording tracks. Accordingly, a new video signal recording device capable of recording information signals of

[Brief explanation of drawings]

Figure 1 shows a recording system in which the present invention is used in an electronic camera that records video signals for two field scans on two recording tracks on a magnetic disk and reproduces each track to obtain one screen. This is a professional drawing. FIG. 2 is a block diagram of the reproduction system of the electronic camera described above. FIG. 3 is a timing chart showing the operation pattern of the recording/reproducing device of the electronic camera. FIG. 4 shows the present invention in an electronic camera in which a video signal for one field scan is recorded on one recording track on a magnetic disk, and when reproducing, one screen is obtained by reproducing the above-mentioned track twice. FIG. 2 is a block diagram of a recording system when using the following. FIG. 5 is a block diagram of the reproduction system of the electronic camera described above. FIG. 6 is a timing chart showing the operation pattern of the recording/reproducing device of the electronic camera. 2.37...Time axis compression circuit 17, 12.24
．． 35.45.51.65.66...frequency converter,
3,39...Memory, 9,13.2
0.27.30.47.61.64.69.71...
...sui, chi, 49...audio recording control circuit~34, 68...audio playback control circuit,
36.70... Time axis expansion circuit, 31, 72.
...1/2H daylay line, 67...
lHf erase line.

Claims (1)

[Claims] A video signal recording device for recording a video signal including a color information signal and a luminance information signal, the video signal recording device comprising means for replacing the color information signal of a part of the video signal with another information signal and recording the same.