JPH05284452A - Recording and reproducing device for wide video signal - Google Patents

Abstract

PURPOSE:To identify information of an aspect ratio and a signal form and to output the information without error by recording the information of the aspect ratio and the signal form of a recorded video signal through superimposi tion for a vertical blanking period together with a video signal and recording the information of the aspect ratio and the signal form onto a recording area different from the video signal recording area. CONSTITUTION:A wide signal control circuit 46 discriminates an aspect ratio and a signal form of a reproduced video signal based on output signals from a wide ID identification circuit 48 and a wide data information identification circuit 38 and controls an aspect ratio conversion circuit 49, output video signal changeover switches 50, 51 and a switch 54 based on the result and a type identification code of a television receiver 56. A luminance signal and a chroma signal being the output signal of the output video signal changeover switches 50, 51 are outputted to the television receiver 56 through a vertical synchronizing signal addition circuit 59 and adder circuits 52, 53 used to add a vertical synchronizing signal to the video signal in the vari-speed reproduction mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal recording / reproducing apparatus, and in particular, a so-called wide video signal having an aspect ratio of 16: 9, NTSC system and PA.
The present invention relates to a wide video signal recording / reproducing apparatus suitable for recording / reproducing a video signal having an aspect ratio of 4: 3, such as the L system.

[0002]

2. Description of the Related Art Currently, the aspect ratio (horizontal to vertical ratio) of TV screens such as NTSC and PAL is usually selected to be 4: 3, but the aspect ratio is 16: 9 to improve the sense of reality. Various wide video image systems have been proposed.

Also, in the video camera, by replacing the lens with a wide lens for an aspect ratio of 16: 9 (using an anamorphic optical system or a fiber plate),
You can also shoot wide video images. (For example,
A method for recording these wide video signals is described in Japanese Patent Publication No. 51-17249 and Japanese Utility Model Publication No. 58-53791.

[0004]

However, the above-mentioned conventional example relates to a method of recording / reproducing a wide video signal, and an aspect ratio of 1 on the same tape.
A VTR and a television capable of identifying when a 6: 9 video signal (wide video signal) and a video signal having an aspect ratio of 4: 3 (normal video signal) are recorded and capable of recording and reproducing the wide video signal and the normal video signal. (TV)
There is no disclosure regarding connection with the. Some video signals (wide video signals) having an aspect ratio of 16: 9 have the aspect ratio of 4: 3 as shown in FIG. In FIG. 2, (1) is a video in which the upper and lower parts of a video signal with an aspect ratio of 4: 3 are cut (for example, replaced with a black level), and the image information part has an aspect ratio of 16: 9. A signal (hereinafter referred to as a letterbox type signal form) (2) is a video signal having an aspect ratio of 4: 3, which is compressed in the horizontal direction of a video signal having an aspect ratio of 16: 9 ( Hereinafter, it is referred to as a squeeze-type signal form.). Here, in a wide TV having an aspect ratio of 16: 9, the video signal in FIG. 2 (1) is expanded vertically and horizontally to be processed so that an image is displayed on the wide TV screen. The signal is expanded only in the horizontal direction and processed so that the image is displayed on the full screen of a wide TV.

Therefore, even for a video signal with an aspect ratio of 16: 9, the signal processing method must be switched on the wide TV side according to the signal form. Therefore, not only a video signal having an aspect ratio of 16: 9 (wide video signal) and a video signal having an aspect ratio of 4: 3 (normal video signal) are identified, but also each video signal form is identified to identify each signal. Wide TV with output form
On the side, automatic switching of signal processing according to this output information is essential.

An object of the present invention is to provide a video signal (wide video signal) having an aspect ratio of 16: 9 and an aspect ratio of 4: 3.
In a wide video signal recording / reproducing apparatus capable of magnetically recording / reproducing the video signal (normal video signal) of (1), a user-friendly system such as identification of a recording signal form and a connection method with a TV is provided.

[0007]

To achieve the above object, a signal form selecting means for selecting an aspect ratio and a signal form of a video camera, and a recording aspect ratio signal according to an output signal of the signal form selecting means Means for superimposing the morphological information in the vertical blanking period of the recorded video signal, and recording the recording aspect ratio and the signal morphological information according to the output signal of the signal morphology selecting means in a recording area different from the video signal recording area. Means, a reproduction aspect ratio discriminating means for discriminating aspect ratio and signal form information recorded in an area different from the video signal recording area, and an aspect ratio of the output video signal based on the output signal of the reproducing aspect ratio discriminating means. And means for outputting information in signal form.

As another method, the first input signal aspect ratio identifying means for identifying the information of the aspect ratio and the signal form superimposed on the vertical blanking period of the input video signal is different from the video signal. Second input signal aspect ratio discriminating means for discriminating the recording aspect ratio and signal form information inputted from the input terminal, and the recording aspect based on the output signal of the first or second input signal aspect ratio discriminating means. A means for creating ratio and signal form information; a means for recording the created recording aspect ratio and signal form information in a recording area different from the video signal recording area; and a means for recording in the area different from the video signal recording area. Based on the output signal of the reproduction aspect ratio identification means, and the reproduction aspect ratio identification means for identifying the aspect ratio and the signal form information. It is constituted by the means for outputting the aspect ratio information of the output video signal Te.

[0009]

Operation: A camera-integrated VTR in which a video camera and a VTR are integrated, a so-called movie, and an aspect ratio of 16:
In a system capable of selectively capturing a video signal of 9 (wide video signal) and a video signal of 4: 3 aspect ratio (normal video signal), information on the aspect ratio and signal form of the recorded video signal is displayed in the vertical blanking period. Is recorded together with the video signal, and the information of the aspect ratio and the signal form is recorded in a recording area different from the video signal recording area.

According to another method of the present invention, recording of a 16: 9 aspect ratio video signal (wide video signal) or a 4: 3 aspect ratio video signal (normal video signal) input from the outside can be performed. In a possible system, it was created based on the aspect ratio and signal form information superimposed on the vertical blanking period of the input recorded video signal or the aspect ratio and signal form information input from another input terminal. Information on the recording aspect ratio and the signal form is recorded in a recording area different from the video signal recording area.

By doing so, it becomes possible to identify and output the information of the aspect ratio and the signal form without error in various VTR reproduction modes such as search and still.

[0012]

1 is an example showing a block diagram when the present invention is applied to a so-called 8 mm video standard camera-integrated VTR.

In FIG. 1, reference numeral 1 denotes a video camera block, which includes a lens 2, a solid-state image sensor 3, and a CDS.
(Correlated double sampling) / AGC (automatic gain adjustment) circuit 4, analog-digital conversion circuit (ADC) 5, camera signal processing circuit 6, wide ID vertical blanking superposition circuit 7, digital-analog conversion circuit for luminance signal ( A luminance DAC) 8 and a chroma signal digital-analog conversion circuit (chroma DAC) 9 are included.

Reference numeral 10 is an external luminance signal input terminal, 11 is an external chroma signal input terminal, 12 is an input luminance signal changeover switch (luminance input switch), 13 is an input chroma signal changeover switch (chroma input switch), and 14 is a luminance signal frequency. Modulation circuit (FM modulation circuit), 15 is a chroma signal low frequency conversion circuit, 16 is a signal addition circuit, 17 is an input audio signal changeover switch (audio input switch), 18 is an audio signal frequency modulation circuit (audio FM modulation circuit), Reference numeral 19 is a wide data information generating circuit showing the aspect ratio and signal form of the recording signal, 20 and 21 are recording signal changeover switches, 2
2 and 23 are recording amplifiers (REC amplifiers), 24 is a rotary drum, 25 and 26 are tape guides, 27 is a magnetic tape, 28 and 29 are rotary magnetic heads with different azimuth angles,
30 and 31 are reproduction amplifiers (PRE amplifiers), 32 and 33
Is a changeover switch controlled by a rotary magnetic head changeover pulse, 34 is a waveform equalizing circuit for reproducing wide data information recorded in an area different from the video signal recording area,
35 is a high-pass filter (HP) for FM luminance signal separation.
F), 36 is a low pass filter (LPF) for low band conversion chroma signal, 37 is a band pass filter (BPF) for FM voice signal, 38 is a wide data information identification circuit, 39 is a frequency demodulation circuit for FM luminance signal ( Luminance FM demodulation circuit),
40 is a high frequency conversion circuit for chroma signals, 41 is a frequency demodulation circuit for FM audio signals (audio FM demodulation circuit), 42, 43 and 44 are signal changeover switches, 45 is an audio signal output terminal, 46 is an aspect ratio and a signal form. A wide signal control circuit for controlling the signal processing of the video camera and the VTR based on the information, 47 is a selection signal input terminal for selecting the signal form of the video camera, and 48 is an aspect superimposed on the vertical blanking period of the video signal. Wide ID identification circuit for identifying ratio and signal form information, 49 is an aspect ratio conversion circuit for converting the aspect ratio and signal form of the output video signal according to the receiving TV, 50 and 51 are output video signal changeover switches, and 52 53 is an adding circuit, 54 is a switch, 55 is a DC voltage generating circuit (DC generating circuit), 5
Reference numeral 6 is a television (TV), 57 is a microphone signal input terminal, 58 is an external audio signal input terminal, and 59 is a vertical synchronization signal addition circuit (V synchronization addition circuit) for adding a vertical synchronization signal during VTR variable speed reproduction. , 60 are VTR variable speed reproduction mode input terminals.

First, the recording mode will be described.

In the video camera 1, the signal form selection signal input from the input terminal 47-for example, the aspect ratio 16:
9 Select letterbox signal format and aspect ratio 1
At 6: 9, the operation mode is determined by the control signal generated by the wide signal control circuit 46 in response to the selection of the squeeze type signal form.

Now, let us assume that the letterbox type signal format is selected with an aspect ratio of 16: 9.

The image projected on the solid-state image sensor 3 through the lens 2 is converted into an electric signal by the solid-state image sensor 3. The output signal from the solid-state image sensor 3 is CDS / AGC.
After low-frequency noise processing and signal amplitude adjustment are performed by the circuit 4, the signal is converted into a digital signal by the ADC 5. The image signal converted into a digital signal is subjected to matrix processing, gamma processing, etc. in the camera signal processing circuit 6, and then in the wide ID vertical blanking superimposing circuit 7 in the aspect ratio and signal form in the vertical blanking period of the luminance signal. Information is superimposed. An example of the information of the aspect ratio and the signal form superimposed in the vertical blanking period is shown in FIG.
It shows in (b). The signal structure is header part, data part and CR
It consists of part C. The header portion is data start information and data for clock reproduction, and the signal period is 0.2H.
(H indicates a horizontal synchronizing signal period). The data section is
It has a 4-bit configuration, and bit 0 and bit 1 show the aspect ratio of the moving image, and bit 2 and bit 3 show the signal form of the moving image. The CRC section is an error correction signal.

Here, the camera signal processing circuit 6 and the wide I
The D vertical blanking superposition circuit 7 performs processing according to the selected aspect ratio and signal form based on the control output signal of the wide signal control circuit 46. DAC8 is
The digital output signal of the wide ID vertical blanking superposition circuit 7 is converted into an analog luminance signal. On the other hand, DAC
Reference numeral 9 converts the digital chroma signal output from the camera signal processing circuit 6 into a modulated chroma signal in the 3.58 MHz band.

The luminance signal converted into the analog signal is input to the FM modulation circuit 14 via the luminance input switch 12 and is modulated into the FM luminance signal.

The modulated chroma signal in the 3.58 MHz band passes through the chroma input switch 13 and the chroma signal low-frequency conversion circuit 1
5, the phase inversion processing and the frequency conversion processing of the FM luminance signal to the low frequency side are performed to obtain a low frequency conversion chroma signal.

When the signal form is the squeeze form of FIG. 2 (2), the VTR signal processing circuit such as the FM modulation circuit 14 is in the high band mode (high resolution mode) by the control output signal of the wide signal control circuit 46. , For example, S-V
It is automatically switched to a mode called HS or Hi8).

The audio signal collected by the microphone together with the camera image is input from the input terminal 57. The input audio signal is input to the audio FM modulation circuit 18 through the audio input switch 17 and is modulated into an FM audio signal.

FM luminance signal, low-frequency conversion chroma signal and FM
The audio signals are added by the signal adding circuit 16.

Further, in addition to the method of superimposing the information of the aspect ratio and the signal form in the vertical blanking period, the information of the aspect ratio and the signal form of the recording signal is provided at a position (FIG. 3) different from the video signal recording area. In order to record a certain wide data signal, the wide data information generation circuit 19 generates a recording wide data signal in response to the output signal of the wide signal control circuit 46. An example of the structure of the wide data signal is shown in FIG. The signal consists of a header part, a data part, and a CRC.
It is composed of parts and. The header portion is data start information and data for clock reproduction, and the signal period is 0.8
H (H indicates a horizontal synchronizing signal period). The data section has an 8-bit structure, and bit 0 and bit 1 are the moving image aspect ratio, bit 2 and bit 3 are the moving image signal form, and bit 4 and bit 5 are the still image aspect ratio. 6 and bit 7 indicate the signal form of a still image.
The CRC section is an error correction signal.

The output signal of the signal adding circuit 16 and the recording wide data signal are respectively the recording signal changeover switch 2.
0, 21 and REC amplifiers 22, 23 are sequentially recorded on the magnetic tape 27 by the rotating magnetic heads 28, 29 as shown in FIG.

When an external luminance signal and a chroma signal are input from the input terminals 10 and 11, they pass through the signal change-over switches 12 and 13 and, instead of the signal of the video camera 1, the luminance FM modulation circuit 14 or The chroma signal low frequency conversion circuit 15 processes the recording signal. In the case of an external signal input, the aspect ratio and the signal form are determined by the output of the wide ID identification circuit 48 and the signal mode input from the input terminal 47 to perform signal processing.

As a video monitor signal at the time of recording,
Luminance signal and chroma signal are signal switch 4 respectively
It is output to the television 56 through 2, 43, 50 and 51. A DC voltage indicating a wide signal is applied to the chroma signal terminal of the S terminal by the DC generation circuit 55 and the addition circuit 53. The composite signal (in which the luminance signal and the chroma signal are added) is output from the adding circuit 52. The DC voltage value becomes a value according to the output signal of the wide signal control circuit 46.

The television 56 uses the information of the aspect ratio and the signal form superimposed in the vertical blanking period of the input video signal and the DC voltage information superimposed on the chroma signal terminal of the S terminal to automatically Specifically, it operates so as to perform signal processing suitable for the aspect ratio and signal form.

Here, when the television 56 is a normal TV having a 4: 3 aspect ratio, the wide signal control circuit 46 outputs a control signal based on the wide TV identification ID signal.
The aspect ratio conversion circuit 49 operates to convert the aspect ratio and signal form of the output video signal into the aspect ratio of 4: 3.

FIG. 6 shows an example of the structure of the television 56.

In FIG. 6, 68 is a TV antenna, and 69.
Is a TV tuner that can receive wide signal broadcasts, 70
Is a wide broadcast detection circuit that detects that the received broadcast is a wide signal broadcast, 71 is a YC separation circuit that separates the composite video signal into a luminance signal and a chroma signal, and 72 is a DC
Value detection circuit, 73 and 74 are signal changeover switches, 75
Is a wide ID signal detection circuit superimposed on vertical blanking, 76 and 77 are signal changeover switches, and 78 is a TV signal processing for outputting various video signals (aspect ratio 4: 3, 16: 9, etc.) on a cathode ray tube. A circuit, 79 is a cathode ray tube, 80 is a wide control circuit for controlling the TV signal processing circuit 78, 81 is an AV bus signal processing circuit, 8
2 is a wide TV ID generation circuit indicating a wide TV, 83 is a composite signal input terminal, 84 is a luminance signal input terminal, 85 is a chroma signal input terminal, 86 is an AV bus signal input / output terminal, and 87 is a wide TVID output terminal. Is.

The TV signal processing circuit 78 receives the form of the input video signal from the wide signal form information detected by the wide broadcast detection circuit 70, the wide ID signal detection circuit 75, the DC value detection circuit 72 and the AV bus signal processing circuit 81. The processing operation is controlled by the output control signal of the wide control circuit 80 for judging.

Next, the reproduction mode will be described.

From the magnetic tape 27 to the rotary magnetic head 28,
The signal reproduced at 29 is amplified by the PRE amplifiers 30 and 31, and then reproduced at the changeover switches 32 and 33.
It is divided into a signal obtained by adding the M luminance signal, the low frequency conversion chroma signal and the reproduced FM audio signal, and a reproduced wide data signal.

This reproduced signal is supplied to the HPF 35 and the LPF 36.
And the BPF 37 separate the reproduced FM luminance signal, the reproduced low frequency chroma signal and the reproduced FM audio signal. Play FM
The luminance signal is demodulated by the luminance FM demodulation circuit 39 into a luminance signal. The demodulated luminance signal is input to the wide ID identification circuit 48, the aspect ratio conversion circuit 49, and the output video signal changeover switch 50 through the signal changeover switch 42. The wide ID identification circuit 48 identifies the wide ID superimposed in the vertical blanking period of the reproduction luminance signal, and outputs the aspect ratio and signal form of the reproduction signal to the wide signal control circuit 46. The reproduced low frequency chroma signal is
Original 3.58MHz in high frequency conversion circuit 40 for chroma signal
Converted to band modulated chroma signal. The converted chroma signal passes through the signal changeover switch 43 and is input to the aspect ratio conversion circuit 49 and the output video signal changeover switch 51. The reproduced FM audio signal is the audio FM demodulation circuit 41.
Is demodulated into an audio signal at. The demodulated audio signal is output to the audio signal output terminal through the signal changeover switch 44. The reproduced wide data signal is discriminated by the waveform equalization circuit 34 and the wide data information discrimination circuit 38 in terms of the aspect ratio and signal form of the reproduced signal, and the result is output to the wide signal control circuit 46.

In the wide signal control circuit 46, the wide ID
The aspect ratio and the signal form of the reproduced video signal are determined based on the output signals of the identification circuit 48 and the wide data information identification circuit 38, and the aspect ratio conversion circuit 49 and the output video are determined according to the result and the type identification code of the television 56. The signal changeover switches 50 and 51 and the switch 54 are controlled.

Output video signal changeover switches 50, 5
The luminance signal and the chroma signal, which are the output signals of No. 1, are V sync addition circuits 5 for adding a vertical sync signal at the time of variable speed reproduction.
It outputs to the television 56 through 9 and the addition circuits 52 and 53.

Here, as for the information of the aspect ratio and the signal form of the reproduced signal, one is superimposed and output as a wide ID signal on the vertical blanking of the video signal, and the other is output to the chroma signal terminal of the S terminal. A DC voltage indicating a wide signal is superimposed and output.

With this configuration, even if a noise bar is generated in the vertical blanking portion during variable speed reproduction and it becomes impossible to determine the aspect ratio and the signal form by the wide ID, the wide data signal can be used to store the information. Can be complemented.

Further, since the wide ID is superposed on the vertical blanking period of the video signal, it is necessary to demodulate the video signal in order to utilize the information of the wide ID for high speed retrieval, and the luminance FM demodulation circuit 39 is required. Various complicated measures such as the internal clamp circuit operation are required. On the other hand, since the wide data signal is not superposed on the video signal and is digitally recorded in an area independent of the video signal, high speed retrieval is easy. Therefore, with the configuration according to the present invention, high-speed program search using the aspect ratio and signal form information can be easily performed.

In addition, during the vertical blanking period, the wide I
For soft tape (recorded tape) on which aspect ratio and signal form information according to D is not superimposed, the wide data signal is not superimposed on the video signal and is an area independent of the video signal. The digital data is recorded on the optical disc, and only this wide data signal can be recorded (after recording).

Further, according to the present invention, the signal processing switching according to the information of the aspect ratio and the signal form of the input video signal is always automatically performed on the television side regardless of the VTR reproduction mode (normal reproduction or variable speed reproduction). Can be performed without malfunction.

Next, another embodiment in which the present invention is applied to 8 mm video will be described with reference to FIG.

The components having the same functions as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 4, 61 is an adder circuit, and 62 is P.
CM signal encoding circuit, 63 is a still image signal processing circuit,
64 is a PCM signal decoding circuit, 65 is a signal switching &
A superimpose circuit 67 is an AV bus processing circuit.

First, the recording mode will be described.

In the video camera 1, the signal form selection signal input from the input terminal 47-for example, the aspect ratio 16:
9 Select letterbox signal format and aspect ratio 1
At 6: 9, the operation mode is determined by the control signal generated by the wide signal control circuit 46 in response to the selection of the squeeze type signal form.

Now, assume that the letterbox type signal form is selected with the aspect ratio of 16: 9.

The image projected on the solid-state image sensor 3 through the lens 2 is converted into an electric signal by the solid-state image sensor 3. The output signal from the solid-state image sensor 3 is CDS / AGC.
After low-frequency noise processing and signal amplitude adjustment are performed by the circuit 4, the signal is converted into a digital signal by the ADC 5. The image signal converted into the digital signal is subjected to matrix processing, gamma processing and the like in the camera signal processing circuit 6, and then in the wide ID vertical blanking superposition circuit 7 in the vertical blanking period of the luminance signal. Information is superimposed. Here, the camera signal processing circuit 6 and the wide I
The D vertical blanking superposition circuit 7 performs processing according to the selected aspect ratio and signal form based on the control output signal of the wide signal control circuit 46. DAC8 is
The digital output signal of the wide ID vertical blanking superposition circuit 7 is converted into an analog luminance signal. On the other hand, DAC
Reference numeral 9 converts the digital chroma signal output from the camera signal processing circuit 6 into a modulated chroma signal in the 3.58 MHz band.

On the other hand, the digital luminance signal and the digital chroma signal (color difference signal) which are the output signals of the camera signal processing circuit 6 are taken into the still image processing circuit 63 by the still image shutter signal inputted from the input terminal 65. The still image processing circuit 63 performs data compression, data shuffling, and the like on the captured digital still image data composed of one field or one frame, and P
Output to the CM signal encoding circuit 62. The PCM signal encoding circuit 62 adds an error correction code and time-axis compression to the input digital data,
Addition circuit 61 by converting to PCM data of the millimeter video standard
Output to. Here, since the still image signal and the moving image signal are created by the same camera signal processing circuit 6, they have the same aspect ratio and signal form. That is, if the moving image signal has the aspect ratio of 16: 9 and the letterbox type signal form, the still image signal also has the aspect ratio of 16: 9 and the letterbox type signal form. However, in the digital still image data, a portion excluding the horizontal synchronizing signal and the vertical synchronizing signal is recorded as data, and therefore the wide ID indicating the aspect ratio and the signal form information cannot be stored in the vertical blanking period.

The analog luminance signal output from the video camera 1 passes through the luminance input switch 12 and the FM modulator circuit 1.
4 and is modulated into an FM luminance signal. The 3.58 MHz band modulated chroma signal output from the video camera 1 is input to the chroma signal low frequency conversion circuit 15 via the chroma input switch 13, and is subjected to phase inversion processing and frequency conversion processing of the FM luminance signal to the low frequency side. Is performed to obtain a low frequency conversion chroma signal.

The audio signal collected by the microphone together with the camera image is input from the input terminal 57. The input audio signal is input to the audio FM modulation circuit 18 through the audio input switch 17 and is modulated into an FM audio signal.

FM luminance signal, low-frequency conversion chroma signal and FM
The audio signals are added by the signal adding circuit 16.

Here, in addition to the method of superimposing the information of the aspect ratio and the signal form on the moving picture signal in the vertical blanking period, a position different from the video signal recording area is added.
In order to record a wide data signal indicating information on the aspect ratio and signal form of each of the moving image signal and the still image signal in (FIG. 8), the wide data information generation circuit 19 responds with the output signal of the wide signal control circuit 46. Generates a record wide data signal. The generated wide data signal is added to the adder circuit 6
At 1, it is time-divisionally added to the PCM signal.

Output signal of the signal adding circuit 16 and the adding circuit 6
The output signal of 1 is the recording signal selector switch 2
0 and 21 and REC amplifiers 22 and 23 are sequentially recorded on the magnetic tape 27 by the rotating magnetic heads 28 and 29 as shown in FIG.

As a video monitor signal during recording,
The luminance signal, the chroma signal, and the still image signal are superposed on the television 56 through the signal changeover switch & superimpose circuit 65 and the video output changeover switches 50, 51 to superimpose the still image signal on a part of the moving image signal. ,
The still image signal is output so as to be selectively output. A DC voltage indicating a wide signal is applied to the chroma signal terminal of the S terminal by the DC generation circuit 55 and the addition circuit 53. The composite signal (in which the luminance signal and the chroma signal are added) is output from the adding circuit 52. Further, the information of the aspect ratio and the signal form of the output video signal from the AV bus processing circuit 67 is bidirectional A
It is output to the V bus signal line.

When the television 56 is a normal TV having a 4: 3 aspect ratio, an AV for controlling audio / video equipment such as a TV or VTR and transmitting equipment information.
The AV bus processing circuit 67 detects the bus signal and operates the aspect ratio conversion circuit 49 according to the detection result to convert the aspect ratio and the signal form of the output video signal into the aspect ratio of 4: 3.

Next, the reproduction mode will be described.

From the magnetic tape 27, the rotary magnetic head 28,
The signal reproduced at 29 is amplified by the PRE amplifiers 30 and 31, and then reproduced at the changeover switches 32 and 33.
It is divided into a signal in which the M luminance signal, the low frequency conversion chroma signal, and the reproduced FM audio signal are added, and a signal in which the reproduced PCM signal and the reproduced wide data signal are added.

The signal obtained by adding the reproduced FM luminance signal, the low frequency conversion chroma signal and the reproduced FM voice signal is converted into a reproduced FM luminance signal, a reproduced low frequency chroma signal and a reproduced FM voice signal by the HPF 35, LPF 36 and BPF 37, respectively. To be separated. The reproduced FM luminance signal is demodulated into a luminance signal by the luminance FM demodulation circuit 39. The demodulated luminance signal passes through the signal changeover switch & superimpose circuit 65,
It is input to the wide ID identification circuit 48, the aspect ratio conversion circuit 49, and the output video signal changeover switch 50. The wide ID discrimination circuit 48 discriminates the wide ID superimposed in the vertical blanking period of the reproduction luminance signal and outputs the aspect ratio and the signal form of the reproduced moving image signal to the wide signal control circuit 46.

The reproduced low band chroma signal is converted into the original 3.58 MHz band modulated chroma signal by the chroma signal high band conversion circuit 40. The converted chroma signal passes through the signal changeover switch & superimpose circuit 65 and is input to the aspect ratio conversion circuit 49 and the output video signal changeover switch 51. The reproduced FM audio signal is demodulated into an audio signal by the audio FM demodulation circuit 41. The demodulated audio signal is output to the audio signal output terminal through the signal changeover switch 44.

The signal obtained by adding the reproduction PCM signal and the reproduction wide data signal is subjected to waveform equalization processing for intersymbol interference or the like in the waveform equalization circuit 34, and the reproduction PCM is performed.
The signal is output to the PCM signal decoding circuit 64, and the reproduced wide data signal is output to the wide data information identification circuit 38. The reproduced PCM signal is sent to the PCM signal decoding circuit 6
In 4, the data is decoded, the error is corrected, the time axis is expanded, and the still image data is compressed during recording. The reproduced compressed still image data is subjected to data shuffling cancellation (original restoration) and data expansion in the still image processing circuit 63, and is restored to a still image digital signal of one field or one frame. The restored still image digital signal is sent to the camera signal processing circuit 6 and the wide ID.
Vertical blanking superposition circuit 7, luminance DAC 8 and chroma D
After being converted into an analog still image signal by using the circuit of the video camera 1 of AC9, it is output to the signal changeover switch & superimpose circuit 65. The signal changeover switch & superimpose circuit 65 superimposes a still picture signal on a part of the moving picture signal or selectively outputs only the still picture signal.

With respect to the reproduced wide data signal, the aspect ratio and the signal form of the reproduced moving image signal and the still image signal are identified by the wide ID identifying circuit 48, and the result is output to the wide signal control circuit 46.

In the wide signal control circuit 46, the wide ID
The aspect ratio and the signal form of the reproduced moving image video signal and the still image video signal are discriminated based on the output signals of the discrimination circuit 48 and the wide data information discrimination circuit 38, and the aspect ratio is determined according to the discrimination result and the type discrimination code of the television 56. Ratio conversion circuit 49 and output video signal changeover switches 50, 51
And the switch 54.

Output video signal changeover switches 50, 5
The luminance signal and the chroma signal, which are the output signals of No. 1, are V sync addition circuits 5 for adding a vertical sync signal at the time of variable speed reproduction.
It outputs to the television 56 through 9 and the addition circuits 52 and 53.

Here, as for the information of the aspect ratio and the signal form of the reproduced signal, one is superimposed and output as a wide ID signal on the vertical blanking of the video signal, and the other is output to the chroma signal terminal of the S terminal. A DC voltage indicating a wide signal is superimposed and output, and the other one is output as an AV bus signal. Therefore, the television side can automatically switch the signal processing according to the input video signal form by using the output information.

With this configuration, even if a noise bar is generated in the vertical blanking portion during variable speed reproduction and it becomes impossible to determine the aspect ratio and the signal form by the wide ID, the information is reproduced by the wide data signal. Can be complemented.

The aspect ratio and the signal form of the still picture signal for recording the portion excluding the horizontal synchronization signal and the vertical synchronization signal as data can be discriminated by the wide data signal. Further, since the wide ID is superimposed on the vertical blanking period of the video signal, it is necessary to demodulate the video signal when utilizing the information of the wide ID for high-speed search, and the clamp in the luminance FM demodulation circuit 39 is required. Various complicated measures such as circuit operation are required.
On the other hand, since the wide data signal is not superposed on the video signal and is digitally recorded in an area independent of the video signal, high speed retrieval is easy.

[0070]

As described above, according to the present invention, even if the noise bar is generated in the vertical blanking portion during the variable speed reproduction and the aspect ratio and the signal form can not be discriminated by the wide ID, Information can be complemented by a wide data signal.

Also, the aspect ratio and signal form of the still picture signal for recording the portion excluding the horizontal synchronizing signal and the vertical synchronizing signal as data can be discriminated by the wide data signal. Further, since the wide ID is superimposed on the vertical blanking period of the video signal, it is necessary to demodulate the video signal when utilizing the information of the wide ID for high-speed search, and the clamp in the luminance FM demodulation circuit 39 is required. Various complicated measures such as circuit operation are required.
On the other hand, since the wide data signal is not superposed on the video signal and is digitally recorded in an area independent of the video signal, high speed retrieval is easy.

Further, since the information on the aspect ratio and signal form of the reproduced moving image signal and still image signal can be transmitted to the television, the television side can automatically switch the signal processing according to the aspect ratio and the signal form of the input signal. It

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram for explaining a wide video signal.

FIG. 3 is a diagram showing an example of a recording tape pattern in the embodiment of FIG.

FIG. 4 is a diagram showing a configuration example of a wide ID signal.

FIG. 5 is a diagram showing a configuration example of a wide data signal.

FIG. 6 is a diagram showing a configuration example of a wide TV.

FIG. 7 is a block diagram showing another example of the present invention.

8 is a diagram showing an example of a recording tape pattern in the embodiment of FIG.

[Explanation of symbols]

 7 ... Wide ID vertical blanking superimposing circuit, 19 ... Wide data information generating circuit, 46 ... Wide signal control circuit, 48 ... Wide ID identifying circuit, 55 ... DC generating circuit, 67 ... AV bus processing circuit.

Claims (1)

[Claims] 1. A signal form selecting means for selecting an aspect ratio and a signal form of a video camera, and information of a recording aspect ratio and a signal form corresponding to an output signal of the signal form selecting means, and a vertical blanking period of a recording video signal. Means for sequentially recording the recorded video signal by a plurality of rotary video heads, and the video signal recording area for recording aspect ratio and signal form information according to the output signal of the signal form selection means. A means for recording with a rotary video head in different recording areas, a means for reproducing the recorded video signal and information of the aspect ratio and the signal form, and an aspect ratio and a superimposing aspect ratio superimposed on the vertical blanking period of the reproduced video signal. A first reproduction aspect ratio identifying means for identifying the information of the signal form, and the information recorded in an area different from the video signal recording area. Second reproduction aspect ratio identification means for identifying information on the spectral ratio and signal form, and information on the aspect ratio and signal form of the output video signal based on the output signals of the first and second reproduction aspect ratio identification means. A wide video signal recording / reproducing apparatus having a means for outputting.