JPH04236588A - Video signal recording/reproducing device - Google Patents

Abstract

PURPOSE:To always display an erect picture onto a monitor receiver by recording a still picture as a digital video signal and recording rotary angle information in an axis turning direction around an optical axis of a video camera onto a prescribed area of a magnetic tape. CONSTITUTION:A still picture video signal processing section 30 and a head section 40 record a still picture as a digital video signal and an angle detection circuit 51 detects a rotary angle in the axis turning direction around an optical axis of a video camera at that time and rotary angle information is recorded to a prescribed area of a magnetic tape 1. In the case of reproduction, a digital video signal of a still picture and the rotary angle information are reproduced and signal processing to rotate a picture is implemented based on the rotary angle information. Thus, the picture is always displayed erect.

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 device that records a moving image as an analog video signal in a so-called video area of a magnetic tape used in, for example, a so-called 8 mm video tape recorder, and also records a so-called PCM audio signal. The present invention relates to a video signal recording/playback device that records still images in a region as digital video signals and plays back the recorded moving images and still images.

0002

2. Description of the Related Art Devices for recording video signals on recording media, such as magnetic recording media, include so-called electronic still cameras using, for example, so-called still video floppies, and video tape recorders using, for example, magnetic tape.

Specifically, for example, in a so-called 8 mm video tape recorder (hereinafter referred to as 8 mm VTR), magnetic tape is wound around a so-called rotating head drum at an angle of 211 degrees, and a pair of heads (hereinafter referred to as rotating heads) are wound at an angle of 211 degrees around a so-called rotating head drum. When a magnetic tape (referred to as a head) helically scans the magnetic tape, diagonal tracks 81 are formed on the magnetic tape 80, as shown in FIG. and a video area 82 corresponding to 180 degrees of the rotating head drum of each track 81.
, the luminance signal is FM modulated, the carrier color signal is converted to a low frequency, the audio signal is FM modulated, and a tracking signal for tracking servo, for example, the so-called ATF (A
Automatic Track Finding) The signal is frequency-multiplexed with a control pilot signal and recorded. In addition, in the PCM audio area 83 corresponding to approximately 30 degrees of the remaining rotating head drum of each track 81, a non-linear quantized 8-bit/sample digital audio signal is processed by so-called cross-interleaving for error correction. After code processing is performed, a synchronization signal, parity, ID, etc. are added and recorded. Furthermore, a cue track 84 and an audio track 85 are formed on both sides of the magnetic tape 80 by scanning with fixed heads, respectively. In the cue track 84, a cue signal used for, for example, the address or beginning of the recorded content is recorded, and the audio track 85
For example, after recording
) audio signals are now recorded.

By the way, for example, Japanese Patent Laid-Open No. 58-16438
As disclosed in Publication No. 3, in order to display (superimpose) the title, cast, explanation, etc. on the video recorded in the video area 82, a still image of text information etc. is taken. A technique for recording (dubbing) in the PCM audio area 83 is known.

[0005]Also, as a device for recording still images, the electronic still camera mentioned above is generally known, but the above-mentioned 8mm VTR is used to record still images as digital video signals in the PCM audio area. It is conceivable to use it as a video signal recording and reproducing device for reproducing still images. In this case, several tens to hundreds of tracks in the PCM audio area are required to record one still image, that is, one field or one frame worth of digital video signals.

By the way, in a camera that takes photographs, by turning the camera body horizontally or vertically, that is, by rotating (tilting) 90 degrees around the optical axis, you can take horizontally long or vertically long photographs. For example, with a video camera, if you tilt the video camera to photograph the subject and display the photographed image on the monitor receiver,
An image rotated 90 degrees is displayed. Also, for example, with a camera-integrated VTR that combines a video camera and a VTR,
An image obtained by photographing a subject by tilting a camera-integrated VTR is recorded on a magnetic tape, and when the recorded image is played back and displayed on a monitor receiver, an image rotated by 90 degrees is displayed.

That is, video cameras and camera-integrated V
When a TR is tilted to take a picture, the image displayed on the monitor receiver becomes tilted and becomes very unsightly. but,
Since conventional video cameras and the like are generally rarely used tilted, this has not been a problem.

[0008]

[Problem to be Solved by the Invention] However, as mentioned above, when using an 8mm VTR as a video signal recording and reproducing device for recording and reproducing still images, it is necessary to consider tilting the video camera or 8mm VTR with integrated camera. occurs. In other words, as a means of reproducing and displaying still images recorded on magnetic tape, in addition to displaying them on a monitor receiver as described above, there is also a method of reproducing and displaying still images recorded on magnetic tape on a recording medium such as film using a picture tube, an electron beam, or a laser beam. It is conceivable to print out still images recorded on a magnetic tape using a so-called stylus for writing images. and,
In this printout, in order to obtain a vertically elongated film or photograph, a video camera or the like must be tilted. Therefore, when using a video camera at an angle and playing back a still image recorded on a magnetic tape and displaying it on a monitor receiver, the image displayed on the monitor receiver will be rotated 90 degrees as described above. It becomes unsightly.

The present invention was made in view of the above circumstances, and also takes into account the printing out of still images recorded on magnetic tape, and it is also possible to print out still images recorded on magnetic tape. A video signal recording device, a video signal reproducing device, and a video signal recording and reproducing device that can display an upright image on a monitor receiver even when the camera is rotated around the optical axis. For the purpose of providing.

0010

[Means for Solving the Problems] In order to solve the above problems, a video signal recording device according to the present invention includes a video camera and scans each track on a magnetic tape formed by helical scanning into a first area. and a second region, and the first
In a video signal recording device that records an analog video signal in an area and records a digital signal in the second area,
a digital video signal recording means for recording a still image taken by the video camera as a digital video signal in the second area; and a rotation angle for detecting a rotation angle in a direction around the optical axis of the video camera. The present invention is characterized in that it is provided with a detection means and a rotation angle information recording means for recording the rotation angle information of the video camera detected by the rotation angle detection means when recording a still image in a predetermined area of the magnetic tape.

[0011] Furthermore, the video signal reproducing device according to the present invention includes:
Each track formed by helical scanning is divided into a first area and a second area, an analog video signal is recorded in the first area, and a still image is recorded as a digital video signal in the second area. and a video signal reproducing device for reproducing a magnetic tape on which rotation angle information about the optical axis of a video camera in a predetermined area is recorded in a predetermined area, the video signal reproducing device comprising: digital video signal reproducing means for reproducing a digital video signal recorded on a second area of the magnetic tape; rotation angle information reproducing means for reproducing rotation angle information recorded on a predetermined area of the magnetic tape; and signal processing means for performing signal processing on the digital video signal from the digital video signal reproducing means based on the rotation angle information from the information reproducing means so that an image generated from the digital video signal is rotated, and outputting the processed signal. It is characterized by:

Further, the video signal recording and reproducing apparatus according to the present invention includes a video camera, divides each track on a magnetic tape formed by helical scanning into a first area and a second area, and divides each track on the magnetic tape formed by helical scanning into a first area and a second area. Recording an analog video signal in the first area and recording a digital signal in the second area,
In a video signal recording and reproducing device capable of reproducing recorded analog video signals and digital signals, a digital video signal recording means records a still image shot by the video camera in the second area as a digital video signal; A rotation angle detection means detects the rotation angle in the direction around the optical axis of the video camera, and when recording a still image, the rotation angle information of the video camera detected by the rotation angle detection means is recorded on the magnetic tape. rotation angle information recording means for recording in a predetermined area; digital video signal reproducing means for reproducing the digital video signal recorded in the second area; and rotation angle information recording means for reproducing the rotation angle information recorded in the predetermined area of the magnetic tape. rotation angle information reproducing means; and signal processing is performed on the digital video signal from the digital video signal reproducing means based on the rotation angle information from the rotation angle information reproducing means so that an image generated from the digital video signal is rotated. The present invention is characterized in that it is provided with a signal processing means for processing and outputting the signal.

[0013]

[Operation] In the present invention, a still image is recorded as a digital video signal in the second area of the magnetic tape, and information on the rotation angle around the optical axis of the video camera is recorded in a predetermined area of the magnetic tape. do.

[0014] Furthermore, while reproducing the digital video signal recorded on the second area of the magnetic tape, the digital video signal is reproduced from the digital video signal based on the rotation angle information recorded on the predetermined area of the magnetic tape. Signal processing is performed so that the generated image is rotated as necessary.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a video signal recording/reproducing apparatus according to the present invention will be described below with reference to the drawings.

In this embodiment, the present invention is applied to a so-called camera-integrated 8 mm VTR (hereinafter simply referred to as a VTR), and FIG. 1 is a block circuit diagram showing the circuit configuration of this VTR.

As shown in FIG. 1, this VTR includes a camera section 10 that converts an image signal into a digital video signal and also performs signal processing such as so-called knee and gamma processing;
The digital video signal from the camera section 10 is converted into an analog video signal and supplied to the head section 40, and the reproduced RF signal from the head section 40 is converted into a so-called NTSC signal, for example.
A moving image signal processing unit 20 that reproduces an analog video signal compliant with the above-mentioned video format, and a moving image signal processing unit 20 that performs data compression processing on one field or one frame of the digital video signal from the camera unit 10 and supplies the processed data to the head unit 40. ,
A still image video signal processing section 30 that reproduces a digital video signal from the reproduced RF signal from the head section 40, an analog video signal from the moving image video signal processing section 20, and a digital video from the still image video signal processing section 30. The head unit 40 time-division multiplexes signals and records them in the video area and PCM audio area of the magnetic tape 1, respectively, and reproduces the reproduced RF signal, and the rotation angle around the optical axis of the VTR. The control unit 50 detects the rotation angle information and controls the moving image signal processing unit 20, still image signal processing unit 30, etc. based on this rotation angle information.

The magnetic tape 1 has the same tape format as the magnetic tape 80 shown in FIG. 7 described above, for example. That is, tracks formed diagonally on the magnetic tape 1 by helical scanning of the rotary head 45 of the head section 40 are divided into a video area and a PCM audio area, a moving image is recorded as an analog video signal in the video area, and a PCM audio area is recorded as an analog video signal. Still images are recorded in the audio area as digital video signals.

The camera unit 10 includes a CCD image sensor (hereinafter referred to as a CCD) 11, and samples an image signal from the CCD 11 at a predetermined period, and also performs a so-called AG
C (Automatic Gain Control)
an analog/digital (hereinafter referred to as A/D) converter 13 that converts the sampled video signal from the S/H & AGC circuit 12 into a digital signal, and a video signal converted into the digital signal. The camera processing circuit 14 is configured to perform signal processing such as knee and gamma processing on the signal as described above.

The moving video signal processing section 20 includes a video RAM 22 that sequentially stores video signals supplied from the camera processing circuit 14 or the A/D converter 25 via the video processing circuit 21, and a control section 50. The video signal read out from the video RAM 22 based on the address from the memory controller 53 is converted into a video signal compliant with the NTSC system, and the luminance signal is FM modulated by a predetermined carrier wave, and the carrier color signal is made to have a low frequency. The video processing circuit 21 converts and frequency multiplexes (hereinafter, this frequency multiplexed signal is referred to as video data) and conversely reproduces a video signal from video data, and the video process circuit 21 or the still image video signal processing A digital /
An analog (hereinafter referred to as D/A) converter 23, a D/A converter 24 that converts the moving image data from the video processing circuit 21 into an analog video signal, and a reproduced RF signal obtained from the MUX 41 of the head section 40. and the A/D converter 25, which converts the analog video signal generated by the video signal into moving image data and supplies the data to the video processing circuit 21.

The still image video signal processing section 30 is connected to the camera process circuit 14 or the PCM process circuit 33.
A video RAM 32 stores one field or one frame of a video signal supplied from a still image video processing circuit 31 through a still image video processing circuit 31, and a video signal read out from the video RAM 32 based on an address from the memory controller 53. (hereinafter, this compressed video signal is referred to as compressed data), and conversely, the still image video processing circuit 31 performs data expansion processing on the compressed data to reproduce the video signal, and the still image video PCM from the process circuit 31 or the above MUX 41
A RAM 34 temporarily stores the compressed data supplied via the process circuit 33, and a synchronization signal, an error correction code, and the control unit 5 for the compressed data read from the RAM 34.
0 system controller 52 based on the rotation angle information around the optical axis of the VTR (hereinafter, compressed data to which this ID, etc. is added is referred to as still image data), and vice versa. The PCM process circuit 33 performs error correction processing on still image data, detects an ID from the still image data, and supplies the detected ID to the system controller 52.

By the way, the above-mentioned predetermined data compression process utilizes, for example, the strong correlation of video signals in time and space. In other words, in this data compression process, when an image is divided into blocks, the dynamic range of the video signal included in each block becomes smaller due to local correlation, so data compression is performed by allocating the number of bits according to the dynamic range of each block. Adaptive dynamic range coding (ADRC)
Yanmic Range Coding).

The head section 40 time-divides the analog video signal (analog video signal obtained by converting moving image data) from the D/A conversion circuit 24 and the digital video signal (still image data) from the PCM process circuit 33. the MUX 41 for multiplexing; an amplifier 43 for amplifying the time-division multiplexed recording signal from the MUX 41 and supplying excitation current to the rotary head 45; and an amplifier 44 for amplifying the reproduced RF signal from the rotary head 45. , a changeover switch 4 for switching the amplifier 43 and the amplifier 44 between recording and reproduction.
It consists of 2.

The control section 50 includes an angle detection circuit 5 for detecting the rotation angle around the optical axis of the VTR.
1, rotation angle information from the angle detection circuit 51, and the above-mentioned PC.
The memory controller 53 is controlled based on the ID from the M process circuit 33 and a later-described vertical/horizontal conversion control signal supplied via a terminal 55 from a switch (not shown) provided on the operation panel, for example, and the angle is A system controller 52 that supplies an ID based on the rotation angle information from the detection circuit 51 to the PCM process circuit 33, and a memory controller 53 that controls the addresses of the video RAMs 22 and 32 under the control of the system controller 52. configured.

A specific example of the configuration of the angle detection circuit 51 for detecting the rotation angle (hereinafter simply referred to as inclination) around the optical axis of the VTR will now be described. For example, as shown in FIG. 2, the angle detection circuit 51 includes an electrode 61 made of a cylindrical conductor, and a conductor having a shape corresponding to 1/4 of a cylinder coaxial with the electrode 61.
1, a weight 65 made of a conductor and in sliding contact with the electrode 61 and the electrodes 62, 63, 64, and a power source 66 that applies, for example, a positive voltage to the electrode 61. and an encoder 67 that detects the potentials of the electrodes 62, 63, and 64 and outputs rotation angle information consisting of, for example, 2 bits.

[0026] This angle detection circuit 51 includes an electrode 6
When the weight 65 is mounted so that the axis of the VTR is parallel to the optical axis of the VTR and the VTR is not tilted, the weight 65 is
As shown in , when the VTR is positioned at the center of the electrode 63 due to gravity, for example, "00" is output from the encoder 67, and the VTR is tilted, for example, by -90 degrees, that is, rotated by -90 degrees around the optical axis. , the weight 65 moves to the center of the electrode 62, and the encoder 67 outputs, for example, "
01'' is output, and when the VTR is tilted, for example, +90 degrees, the weight 65 moves to the center of the electrode 64,
For example, "10" is output from the encoder 67. The rotation angle information from this encoder 67 is
The signal is supplied to the system controller 52 shown in FIG.

Next, a VTR having the above configuration will be described.
Various operation modes, namely, still image shooting (recording) mode, still image playback mode, moving image shooting mode, and moving image playback mode will be explained.

This VTR records still images in the PCM audio area and moving images in the video area, and also records the tilt of the recorded still image (hereinafter simply referred to as still image tilt) or the tilt of the moving image. (hereinafter simply referred to as the tilt of the moving image) is recorded in a predetermined area of the PCM audio area, for example. Furthermore, the recorded still image or moving image is reproduced after being converted vertically and horizontally, that is, rotated, as necessary, based on the ID recorded at the time of photography. Note that the ID indicating the tilt of a still image and the ID indicating the tilt of a moving image can be set independently. That is, the ID indicating the tilt of a still image and a moving image is, for example, 4 bits (b3, b2, b
1, b0), and the upper two bits (b3,
b2) indicates the tilt of the still image, and the lower two bits (b1
, b0) indicates the tilt of the video.

In the still image shooting mode, when the shutter (not shown) is operated, the still image is recorded in the PCM audio area of the magnetic tape 1, and the ID indicating the tilt of the recorded still image is stored in a predetermined location in the PCM audio area. It is designed to record in the area.

That is, the system controller 52
For example, when a still image shooting mode is set on an operation panel (not shown), a control signal corresponding to the setting is detected and each part is controlled to operate in the still image shooting mode. When the shutter is operated, a shutter signal sent from the shutter via the terminal 54 is detected, and one frame or one frame of the video signal photographed by the camera section 10 is detected.
The field portion is recorded as a digital video signal in the PCM audio area of the magnetic tape 1 via the still image video signal processing section 30 and the head section 40, and information indicating the tilt of the VTR at the time of shooting, that is, the recorded still image signal is recorded as a digital video signal in the PCM audio area of the magnetic tape 1. An ID indicating the tilt of the image is recorded in a predetermined area of the PCM audio area.

Specifically, the image signal from the CCD 11 is converted into a digital signal in the S/H&AGC circuit 12, A/D converter 13, and camera process circuit 14, and then subjected to signal processing such as knee and gamma processing. will be applied. The video signal subjected to this signal processing is supplied to the video RAM 32 via the still image video processing circuit 31.

On the other hand, the system controller 52 controls a motor (not shown) for running the magnetic tape 1 so that the magnetic tape 1 starts running when the shutter is operated, and also controls a motor (not shown) for running the magnetic tape 1, and also controls a motor (not shown) for running the magnetic tape 1 so that the running of the magnetic tape 1 starts when the shutter is operated. The memory controller 53 is controlled so that the video signal is stored in the video RAM 32. The video RAM 32 sequentially stores one field or one frame of the video signal according to a write address from the memory controller 53 that is synchronized with the line sequential scanning of the CCD 11, for example.

Next, the system controller 52 controls the memory controller 53 so that the video signal stored in the video RAM 32 is read out, and also controls the recording based on the information indicating the tilt of the VTR from the angle detection circuit 51. An ID indicating the tilt of the still image to be displayed is supplied to the PCM process circuit 33. The video RAM 32 sequentially reads video signals and supplies them to the still image video processing circuit 31 according to read addresses synchronized with, for example, data compression processing from the memory controller 53 . The still image video processing circuit 31 performs data compression processing on the sequentially read video signals to generate compressed data, and supplies this compressed data to the PCM processing circuit 33 .

[0034] After temporarily storing this compressed data in the RAM 34, the PCM process circuit 33 stores the compressed data in the RAM.
34, and add a synchronization signal, an error correction code, and an ID supplied from the system controller 52 to generate still image data, and send this still image data to MUX 4.
Supply to 1.

On the other hand, the video processing circuit 21 converts the video signal from the camera processing circuit 14 into a video signal conforming to, for example, the NTSC system, and supplies it to the D/A converter 23 via the changeover switch 27. The D/A converter 23 is
A video signal (digital signal) conforming to the NTSC system is converted into an analog signal and sent to, for example, a monitor receiver (not shown) via a terminal 26. As a result, the image being captured can be monitored.

The MUX 41 supplies the video signal from the PCM process circuit 33, ie, the above-mentioned still image data, to the rotary head 45 via the changeover switch 42 and the amplifier 43. As a result, each time the shutter is operated, the video signal of one still image is recorded on several tens to hundreds of tracks in the PCM audio area of the magnetic tape 1, and the tilt of the recorded still image is also indicated. An ID is recorded in a predetermined area of each track. Note that the number of tracks required to record one still image depends on the data compression rate.

The relationship between the tilt of the VTR at the time of shooting, that is, the tilt of the captured image, the vertical/horizontal conversion control signal, the tilt of the recorded still image, and the ID will now be described using FIG. 3. In the still image shooting mode, regardless of the vertical/horizontal conversion control signal supplied via the terminal 55, the state in which the still image is shot, that is, the still image shot by the camera section 10 is recorded in its original form. , rotation angle information indicating the tilt of the VTR is recorded as an ID.

Specifically, as shown in FIG. 3, for example,
When shooting without tilting the VTR, a horizontally long still image is shot, and the shot horizontally long still image is recorded in the PCM audio area. Also, at that time, ID (“b3
"00" is recorded in a predetermined area as "b2"). For example, if the VTR is tilted by -90 degrees to take a picture, a still image that is vertically long and tilted by 90 degrees is photographed, and the photographed still image that is vertically long and tilted by 90 degrees is recorded. Further, "01" is recorded as the ID at this time. Also, for example, V
If the TR is tilted 90 degrees and photographed, a still image that is vertically long and tilted by -90 degrees is photographed, and the photographed still image that is vertically long and tilted by -90 degrees is recorded. Further, "10" is recorded as the ID at this time.

Thus, in this embodiment, the digital video signal recording means for recording still images as digital video signals in the PCM audio area is composed of the still image video processing circuit 31 to RAM 34 and the MUX 41 to rotary head 45, and includes an angle detection circuit. 51 is used as a rotation angle detection means for detecting a rotation angle in a direction around the optical axis of the VTR, and a rotation angle information recording means for recording an ID in a predetermined area of the magnetic tape 1 is a system controller 52, a PCM.
It is composed of a process circuit 33 and a MUX 41 to a rotary head 45.

Next, the I
A still image playback mode in which still images are played back based on D will be described.

In the still image shooting mode, in addition to the mode in which the video signal of the reproduced still image is output to a monitor receiver for display, for example, as described above, a picture tube, an electron beam, or a laser beam is used to shoot a film, etc. It has a printing mode in which an image is written on a recording medium using a so-called stylus. Then, when in the mode for displaying on a monitor receiver, based on the ID indicating the tilt of the recorded still image, the video signal of the still image recorded by tilting the VTR is displayed.
When in the mode where the image generated from this video signal is processed so that it is erected, outputted, and printed out, the still image video signal remains in its recorded state.
That is, the video signals are output in the order in which they are reproduced from the magnetic tape.

That is, the system controller 52
For example, when a still image playback mode is set on the operation panel, a control signal corresponding to the setting is detected and each part is controlled to operate in the still image playback mode. and,
The system controller 52 determines whether the vertical/horizontal conversion control signal supplied via the terminal 55 is "0" or "1", and
When set to 1, the image generated from this video signal is subjected to signal processing such as rotation, that is, vertical and horizontal conversion, as necessary, and when set to 0, rotation is performed. The still image video signal processing section 30 is controlled so that signal processing that is not performed is performed.

Specifically, as shown in FIG. 1, the PCM process circuit 33 performs error correction processing on still image data reproduced by the head section 40 from the PCM audio area of the magnetic tape 1, and also performs error correction processing on the still image data reproduced by the head unit 40 from the PCM audio area of the magnetic tape 1. Separate and detect ID, etc. This detected ID is supplied to the system controller 52, and the compressed data subjected to error correction is
It is temporarily stored in AM34. The compressed data read from the RAM 34 is then sent to the still image video processing circuit 31.
supplied to The still image video processing circuit 31 performs data expansion processing on the compressed data, reproduces a video signal, and supplies the video signal to the video RAM 32 . The video RAM 32 stores one frame or one field of still image video signals using a write address synchronized with data expansion processing from the memory controller 53.

Next, the system controller 52 receives the vertical/horizontal conversion control signal and the PCM signal supplied via the terminal 55.
Based on the ID indicating the tilt of the still image from the process circuit 33, the memory controller 53 is controlled so that the image generated from the video signal read from the video RAM 32 is rotated as necessary.

Specifically, the system controller 52 determines whether the vertical/horizontal conversion control signal is "0" or "1" as shown in FIG.
”, and if it is “0”, the memory controller 53 is controlled so that the video signals are read out from the video RAM 32 in the order in which they were stored. In other words, when the vertical/horizontal conversion control signal is "0", it is a printout mode, and the video signal is transferred to the video RA while maintaining the state of the captured image.
Read from M32.

On the other hand, when the vertical/horizontal conversion control signal is "1", the system controller 52 determines the tilt of the still image based on the ID, and determines that the still image is not tilted ("b3 b2").
” = “00”), the memory controller 53 is controlled so that the video signals are read out from the video RAM 32 in the order in which they were stored, and the still image is tilted by 90 degrees (“b3
b2 ” = “01”), the memory controller 53 is controlled so that the video signal is read out in the vertical direction of the captured image in order from the right side, and the still image is tilted by -90 degrees (“b3 b2 ” = “10 ''), the memory controller 53 is controlled so that the video signals are sequentially read out in the vertical direction and from the left side of the captured image. In other words, when the vertical/horizontal conversion control signal is "1", it is the mode to display on the monitor receiver, and when the still image is recorded tilted,
A video signal is read out from the video RAM 32 so that the image is vertically and horizontally converted so that the image is erected.

The video signal read out from the video RAM 32 in this manner is supplied to the still image video processing circuit 31. The still image video processing circuit 31 converts the video signal into a video signal compliant with the NTSC system, and then sends it to a monitor receiver or, for example, a so-called video printer via a changeover switch 27, a D/A converter 23, and a terminal 26. . As a result, an upright image is always displayed on the screen of the monitor receiver, and the printed film or photograph is equivalent to the captured image, making it possible to obtain a vertically long film or photograph.

In other words, even when the VTR is rotated around the optical axis to obtain vertically long films or photographs, still images can be displayed upright on the monitor receiver. I can do it.

Thus, in this embodiment, the digital video signal reproducing means for reproducing the digital video signal recorded in the PCM audio area is the still image video processing circuit 3.
1 to RAM 34 and MUX 41 to rotary head 45, rotation angle information reproducing means for reproducing the ID recorded in a predetermined area of magnetic tape 1 is composed of PCM process circuit 33 and MUX 41 to rotary head 45, and signal processing means is composed of a video RAM 32, a system controller 52, and a memory controller 53.

Next, the video shooting mode will be explained. In the video shooting mode, unlike the above-mentioned still image shooting mode, the image taken by tilting the VTR to which the present invention is applied can be displayed on the monitor receiver even with a conventional VTR, unlike the still image shooting mode described above. That is, in addition to a mode in which a moving image is recorded while maintaining the state of the captured image, there is also a mode in which the image is rotated 90 degrees and recorded in the video area of the magnetic tape 1 as necessary, and the above-mentioned aspect conversion control signal is provided. Based on the rotation angle information, the video recorded by tilting the VTR is rotated as necessary and recorded in the video area of the magnetic tape 1, and the ID indicating the tilt of the recorded video is stored in the PCM, for example.
It is designed to record in a predetermined area of the audio area.

That is, the system controller 52
For example, when a video shooting mode is set on the operation panel, a control signal corresponding to the setting is detected and each part is controlled to operate in the video shooting mode. When the shutter is operated, a shutter signal sent from the shutter via the terminal 54 is detected, and the video signal captured by the camera section 10 while the shutter is operated is sent to the video signal processing section 20 and the head. Through the section 40, the magnetic tape 1
An analog video signal is recorded in the video area of the PCM audio area, and an ID indicating the tilt of the recorded moving image is recorded in a predetermined area of the PCM audio area. Also, at this time, the system controller 52 determines whether the vertical/horizontal conversion control signal supplied via the terminal 55 is "0" or "1", and when it is "1", converts the captured video as necessary. The video signal processing unit 20 is controlled so that signal processing for rotating, that is, converting vertically and horizontally, is performed on the video signal, and when it is "0", signal processing that does not perform rotation is performed on the video signal. It has become.

Specifically, the image signal from the CCD 11 is converted into a digital signal in the S/H&AGC circuit 12, A/D converter 13, and camera process circuit 14, and then subjected to signal processing such as knee and gamma processing. will be applied. The video signal subjected to this signal processing is supplied to the video RAM 22 via the video processing circuit 21.

The system controller 52 then stores the video signal from the camera process circuit 14 in the video RAM 2.
The memory controller 53 is controlled so that the data are sequentially stored in 2. The video RAM 22 is a memory controller 53
For example, video signals are sequentially stored using write addresses synchronized with line sequential scanning of the CCD 11.

Next, when the VTR is tilted to take a picture, the system controller 52 adjusts the video as necessary based on the vertical/horizontal conversion control signal supplied via the terminal 55 and the rotation angle information from the angle detection circuit 51. The memory controller 53 is controlled so that the video signal read from the RAM 22 is rotated, and an ID based on the vertical/horizontal conversion control signal and rotation angle information is supplied to the PCM process circuit 33.

Specifically, the system controller 52 determines whether the vertical/horizontal conversion control signal is "0" or "1", and determines whether the vertical/horizontal conversion control signal is "0" or "1".
'', the memory controller 53 is controlled so that the video signals are read out from the video RAM 22 in the order in which they were stored. That is, the video signal is read out from the video RAM 22 while maintaining the state of the captured image.

On the other hand, when the aspect conversion control signal is "1", the system controller 52 determines the tilt of the VTR based on the rotation angle information, and when the VTR is not tilted (rotation angle information = "00"), the system controller 52 determines the tilt of the VTR based on the rotation angle information. controls the memory controller 53 so that the video signals are read out from the video RAM 22 in the order in which they were stored. Also, when the VTR is tilted -90 degrees (rotation angle information = "01"), the memory controller is configured so that the video signal is read out in the vertical direction of the captured image and sequentially from the right side, that is, the image is rotated -90 degrees. 53. Furthermore, when the VTR is tilted 90 degrees (rotation angle information = "10"), the memory controller 53 is set so that the video signals are read out in the vertical direction of the captured image and sequentially from the left side, that is, the image is rotated 90 degrees. Control. In other words, when the VTR is tilted, the video signal is read out from the video RAM 22 so that the image is erected by converting the image vertically and horizontally.

The video signal thus read out from the video RAM 22 is supplied to the video processing circuit 21. Furthermore, the system controller 52 supplies the PCM process circuit 33 with an ID indicating the inclination of the moving image to be recorded, based on the vertical/horizontal conversion control signal and the rotation angle information.

The video process circuit 21 includes a video RAM
The video signal from 22 is converted into a video signal based on the NTSC system, for example, and is supplied to the D/A converter 23 via the changeover switch 27. The D/A converter 23 converts a video signal (digital signal) conforming to the NTSC system into an analog signal, and sends it to, for example, a monitor receiver via a terminal 26. As a result, the image being captured can be monitored. Further, the video process circuit 21 has a video RA
The luminance signal from M22 and the carrier color signal are frequency-multiplexed to generate video data, and this video data is sent to the D/A converter 24.
supply to. The D/A converter 24 converts the video data into an analog video signal and supplies it to the MUX 41 .

On the other hand, this MUX 41 is supplied with the above-mentioned ID to which a synchronization signal etc. are added from the PCM process circuit 33, and the MUX 41 time-division multiplexes the video signal from the D/A converter 24 and this ID. It is supplied to the rotary head 45 via a changeover switch 42 and an amplifier 43. As a result,
The video signal of the moving image is subjected to signal processing to rotate the image as necessary and recorded in the video area of the magnetic tape 1, and an ID indicating the tilt of the recorded moving image is recorded in a predetermined area of each track. recorded.

Here, the relationship between the tilt of the VTR at the time of shooting, that is, the tilt of the captured image, the vertical/horizontal conversion control signal, the tilt of the recorded moving image, and the ID will be explained using FIG. In the video shooting mode, as described above, when the vertical/horizontal conversion control signal supplied via the terminal 55 is "0", the video is taken in the state in which the video is taken, that is, the video taken by the camera unit 10 remains unchanged. At the same time, rotation angle information indicating the tilt of the VTR is recorded as an ID, and when the vertical/horizontal conversion control signal is "1", the vertical and horizontal of the image is converted as necessary to ensure that the image is always correct. I
D is always recorded as "00".

Specifically, as shown in FIG. 5, when the vertical/horizontal conversion control signal is "0", for example, if you shoot without tilting the VTR, a horizontally long moving image will be shot, and the horizontally long video that was shot will be A moving image of the state is recorded in the video area. Also, at that time, "00" is recorded as the ID ("b1 b0") in a predetermined area. Further, for example, if the VTR is tilted by -90 degrees to take a picture, a vertically long and 90 degrees tilted moving image will be photographed, and the photographed vertically long and 90 degrees tilted video will be recorded. Further, "01" is recorded as the ID at this time. Further, for example, if the VTR is tilted 90 degrees to take a picture, a vertically long and -90 degrees tilted moving image will be photographed, and the photographed vertically long and -90 degrees tilted moving picture will be recorded. Further, "10" is recorded as the ID at this time.

On the other hand, when the vertical/horizontal conversion control signal is "1", for example, if the VTR is photographed without tilting, a horizontally long moving image is photographed, and the photographed horizontally long moving image is recorded. Also, at that time, "00" is recorded as the ID ("b1 b0"). Also, for example, set the VTR to -90
If you shoot at an angle of 90 degrees, a vertically long video tilted 90 degrees will be shot;
It is rotated 0 degrees and recorded. Further, "00" is recorded as the ID at this time. Also, for example, if you shoot a VTR tilted 90 degrees, a vertically long and -90 degrees tilted video will be shot;
It is rotated 0 degrees and recorded. Further, "00" is recorded as the ID at this time.

[0063] While shooting a moving image as described above, by operating the above-mentioned still image video signal processing unit 30 as necessary, one screen of still images of the moving image can be captured for a predetermined period of time ( The data may be recorded in the PCM audio area every time the magnetic tape 1 travels several tens to hundreds of tracks.

Next, a moving image playback mode will be described in which a moving image is played back based on an ID from a magnetic tape on which a moving image is recorded together with an ID indicating the tilt of the moving image as described above.

In the video playback mode, in order to play back the video recorded on the magnetic tape and output it to a monitor receiver for display, an ID indicating the tilt of the recorded video is used.
Based on this, there is a mode in which the video signal of a video recorded by tilting the VTR is subjected to signal processing so that the image generated from this video signal is always erect and output, and a mode in which the video signal of the video is recorded. It has a mode in which the video signals are output as they are, that is, in the order in which they are reproduced from the magnetic tape.

That is, the system controller 52
For example, when a video playback mode is set on the operation panel, a control signal corresponding to the setting is detected and each part is controlled to operate in the video playback mode. Then, the system controller 52 determines whether the vertical/horizontal conversion control signal supplied via the terminal 55 is "0" or "1", and selects "1".
When , the image generated from this video signal is rotated, that is, the signal processing is performed on the video signal to be played back as necessary, that is, the image is converted vertically and horizontally, and when it is 0, no rotation is performed. The moving image signal processing unit 20 is controlled so that signal processing that is not performed is performed.

Specifically, as shown in FIG. 1, the A/D converter 25 converts the video area of the magnetic tape 1
0 converts the analog video signal of the moving image played back into a digital signal, and the video signal converted to the digital signal is sent to the video RAM via the video processing circuit 21.
22. The video RAM 22 sequentially stores video signals from the memory controller 53 according to write addresses.

On the other hand, the PCM process circuit 33 separates and detects the ID recorded in a predetermined area of the PCM audio area of the magnetic tape 1, and supplies this ID to the system controller 52.

Next, the system controller 52 receives the vertical/horizontal conversion control signal and the PCM signal supplied via the terminal 55.
Based on the ID indicating the tilt of the moving image from the process circuit 33, the memory controller 53 is controlled so that the image generated from the video signal read from the video RAM 22 is rotated as necessary.

Specifically, the system controller 52 controls whether the vertical/horizontal conversion control signal is "0" or "1" as shown in FIG.
”, and when it is “0”, the memory controller 53 is controlled so that the video signals are read out from the video RAM 22 in the order in which they were stored.

On the other hand, when the vertical/horizontal conversion control signal is "1", the system controller 52 determines the tilt of the video based on the ID, and determines that the video is not tilted ("b1b0"=
"00"), the memory controller 5 reads out the video signals from the video RAM 32 in the order in which they were stored.
3, the video is tilted 90 degrees ("b1 b0
” = “01”), the memory controller 53 is controlled so that the video signal is read out in the vertical direction of the captured image and sequentially from the right side, and the video is tilted by -90 degrees (“b1”).
b0'' = ``10''), the memory controller 53 is controlled so that the video signals are sequentially read out in the vertical direction of the captured image from the left side. In other words, when the vertical/horizontal conversion control signal is "1", the mode is for display on the monitor receiver, and when the video is recorded tilted, the video signal is
Video R converts the image vertically and horizontally so that the image is erect.
It is read from AM22.

The video signal thus read out from the video RAM 22 is supplied to the video processing circuit 21. The video processing circuit 21 converts the video signal into NTSC.
After converting to a video signal compliant with the standard, selector switch 2
7. Send it to the monitor receiver via the D/A converter 23 and terminal 26. As a result, the vertical/horizontal conversion control signal becomes "1".
In this case, an upright image is always displayed on the monitor receiver screen.

By the way, when recording a moving image, the video signal is processed so that when the VTR is tilted and the image is taken, the image is erected, and the video signal is recorded on magnetic tape. Even when this magnetic tape is reproduced using a magnetic tape, an erect image can be displayed on a monitor receiver.

As is clear from the above explanation, when recording a still image, an ID indicating the tilt of the still image recorded on the magnetic tape is recorded, and upon playback, the video signal is By applying signal processing to rotate the image generated from this video signal as necessary, for example, when displaying a reproduced still image on a monitor receiver, signal processing to rotate the image is applied to the video signal. By applying rotational signal processing and outputting, it is possible to always display an upright image on a monitor receiver.For example, when printing out, by outputting without applying rotating signal processing, it is possible to output vertically long film or photographs. Obtainable.

Note that the present invention is not limited to the above-described embodiments; for example, in the above explanation, ID is
Although it is recorded in the audio area, it may also be recorded, for example, in a so-called guard band (or loading index) between a video area and a PCM audio area, a so-called cute track, or a so-called audio track.

In addition, a so-called deep recording method is adopted, and an analog video signal and a digital signal are recorded in the depth direction of the magnetic tape, and a video signal recording and reproducing apparatus capable of reproducing the recorded analog video signal and digital signal is provided. , it goes without saying that the present invention can be applied.

[0077]

Effects of the Invention As is clear from the above description, in the present invention, when recording a still image as a digital video signal on the second area of a magnetic tape, Rotation angle information, that is, information indicating the inclination of the recorded still image, is recorded in a predetermined area of the magnetic tape, and when playing back, for example, when displaying the reproduced still image on a monitor receiver, the rotation angle information is By subjecting the video signal to signal processing that rotates the image as necessary based on information indicating the inclination of the still image, it is possible to always display an erect image on the monitor receiver. Furthermore, when printing out, for example, by not performing rotating signal processing, it is possible to obtain a vertically long film or photograph.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing the circuit configuration of a camera-integrated 8 mm video tape recorder to which the present invention is applied.

FIG. 2 is a sectional view showing a specific configuration of an angle detection circuit constituting the camera-integrated 8 mm video tape recorder.

FIG. 3 is a diagram showing the relationship between the state of a captured still image, the recording state, and an ID.

FIG. 4 is a diagram showing the relationship between the recording state of a still image, the state of a reproduced image, and an ID.

FIG. 5 is a diagram showing the relationship between the state of a captured image of a moving image, the recording state, and an ID.

FIG. 6 is a diagram showing the relationship between the recording state of a moving image, the state of a reproduced image, and an ID.

FIG. 7 is a diagram showing a tape format of magnetic tape used in an 8 mm video tape recorder.

[Explanation of symbols]

1...Magnetic tape 10...Camera part 31...Still image video process circuit 32...Video RAM 33...PCM process circuit 41...MUX 45...Rotating head 51... Angle detection circuit 52...System controller 53...Memory controller

Claims (3)

[Claims] 1. A video camera is provided, each track on a magnetic tape formed by helical scanning is divided into a first area and a second area, and an analog video signal is recorded in the first area, A video signal recording device for recording a digital signal in the second area, further comprising: digital video signal recording means for recording a still image shot by the video camera in the second area as a digital video signal; A rotation angle detection means for detecting a rotation angle in a direction around the optical axis, and a rotation angle information of the video camera detected by the rotation angle detection means when recording a still image is recorded in a predetermined area of the magnetic tape. A video signal recording device comprising a rotation angle information recording means for recording rotation angle information. 2. Each track formed by helical scanning is divided into a first area and a second area, an analog video signal is recorded in the first area, and a still image is digitally recorded in the second area. A video signal playback device that plays back a magnetic tape that is recorded as a video signal and also has rotation angle information about the optical axis of a video camera recorded in a predetermined area in a predetermined area. Digital video signal reproducing means for reproducing a digital video signal recorded on a second area of the magnetic tape, and rotation angle information reproducing means for reproducing rotation angle information recorded on a predetermined area of the magnetic tape. and a signal that is output after performing signal processing on the digital video signal from the digital video signal reproducing means based on the rotation angle information from the rotation angle information reproducing means so that an image generated from the digital video signal is rotated. 1. A video signal reproducing device comprising: processing means. 3. Equipped with a video camera, each track on a magnetic tape formed by helical scanning is divided into a first area and a second area, and an analog video signal is recorded in the first area, In a video signal recording and reproducing device capable of recording a digital signal in the second area and reproducing the recorded analog video signal and digital signal, a still image taken by the video camera is recorded as a digital video signal in the second area. a rotation angle detection means for detecting a rotation angle in a direction around the optical axis of the video camera; rotation angle information recording means for recording detected rotation angle information of the video camera in a predetermined area of the magnetic tape; digital video signal reproducing means for reproducing the digital video signal recorded in the second area; and the magnetic tape. rotation angle information reproducing means for reproducing rotation angle information recorded in a predetermined area of the rotation angle information reproducing means; 1. A video signal recording and reproducing apparatus comprising: a signal processing means for performing signal processing so that an image generated from the image is rotated and outputting the resultant signal.