JPS62256584A - Picture information recorder - Google Patents

Abstract

PURPOSE:To record a moving picture free from black-out together with still pictures by recording a moving picture information signal stored in a storage means when a still picture is generated with a shutter member in case of simultaneous recording of the moving picture information signal and a still picture information signal. CONSTITUTION:When the first stroke of a shutter release button 24 is turned on, the moving picture signal is recorded. Picture information stored in a CCD 3 by the operation of a shutter 2 is read out to a picture memory 10 at the first transfer timing just after closing of the shutter 2 at the operation end and is read out from the memory 10 to a PCM encoder 13 in a prescribed time to record a still picture. While the still picture signal is recorded on the PCM area of a tape 22 from the memory 10 through the PCM encoder 13, the tape 22 is fed automatically to record moving pictures and still pictures simultaneously though the button 24 is erroneously returned to the first stroke. Thus, the moving pictures free from black-out are recorded together with still pictures.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an image information recording device that has a function of recording moving images and simultaneously recording still images.

(Prior Art) For example, in a conventional camera-integrated VTR device, there is no special added function for recording still images, and when it is necessary to play back still images, it is set to the still mode and recorded on the tape. Still images are reproduced by repeatedly reproducing one field or one frame of image No. 43 from among recorded moving image signals.

(Problems to be Solved by the Invention) However, in the recording tape obtained by the conventional camera-integrated VTR device, the signal for one field or one frame is extracted from the moving image signal as described above. ,
When reproduced as a still image signal, even if the image quality is sufficient for viewing when reproduced as a moving image signal, the visual S/N deteriorates when the image is reproduced as a still image, and only a low-quality image is obtained. There wasn't. In addition, since conventional camera-integrated VTR devices do not have a shutter function, even the fastest exposure time is l/60 seconds, so fast-moving subjects are recorded blurry, and strobes are It cannot be used either.

Therefore, it is being considered to record still images separately from recording moving images. In this case, when recording still image signals, it has been considered to digitize the still image signals to prevent deterioration in image quality.

For example, recently, camera-integrated VTR devices have become smaller and so-called 8mm video devices have been developed, but the 811I! It has been considered to record still image signals in the PCM recording area of a magnetic tape specified by the X.11 video format to simultaneously record still images and moving images.

However, when recording still images and moving images at the same time as described above in a camera-integrated VTR device, the still image signal and the moving image signal are obtained by the same image sensor, etc. Since imaging for video recording is not performed during the period, a phenomenon (blackout) occurs in which video signals cannot be obtained during that period, causing inconvenience when recording video images.

The present invention has been made in view of such problems, and it is an object of the present invention to provide an image information recording device that can record moving images without so-called blackouts together with still images.

[Means for Solving the Problems] The image information recording device of the present invention includes a recording means for recording a moving image information signal and a still image information signal in separate areas on the same recording medium, and a shutter for creating a still image. A member, a storage means for storing part of the moving image signal, and a supply means for supplying the moving image signal stored in the storage means to the recording means during a still image creation period by the shutter member. be.

[For production]

With the above configuration, the present invention records the moving image information using the moving image information signal stored in the storage means when the shutter member creates the still image when simultaneously recording the moving image information signal and the still image information signal. Can be done.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a camera-integrated VT as an embodiment of the present invention.
FIG. 3 is a block diagram of the R device.

In FIG. 1, 1 is a lens, and 3 is a ChargeCoupled image sensor placed at the focal point of the lens 1.
Device (hereinafter referred to as CCO). 2 is a shutter placed between the lens 1 and C[:[)3.

Note that the shutter speed of the shutter 2 is set by a photometric means (not shown), and the set value is manually input to a system controller, which will be described later.

Reference numeral 18 denotes a system controller, which is a Read Only Me controller that stores control procedures as shown in FIG. 2, which will be described later.
ROM (hereinafter referred to as ROM). 17 is synchronized mail A7 + Tatsumi lto MT GuqC! Kona) - gourd. CCO driver 19, picture memory driver 20,
A signal necessary for controlling the mechanical control 21 and the like is supplied to the system controller 18. Based on the scanning pulse from the system controller 18, the CCD driver 19
Drives CCD3. Also, system controller 1
Reference numeral 8 controls the compensator 5 based on shirt crucible speed information obtained from the shutter 2 and an exposure system (not shown).

4 is an analog signal processing circuit, and 3 from C0D3
The primary color signal RGB is converted into a luminance signal Y and a color signal C, and the output luminance signal Y and color signal C are sent to a compensator 5.
input to one input end of the .

9 is an analog-to-digital (^/D) converter, and C
The three primary color signals RGB from CD3 are converted into digital three primary color signals RGB'.

A picture memory 10 stores three primary color signals RGB'S converted into digital signals by the A/D converter 9 in units of frame periods or field periods.

The picture memory driver 20 is connected to the system controller 1
The picture memory IO is driven based on the control signal from 8. The digital three primary color signals RGB' from the picture memory 10 are digital and analog (D
/A) The converter 11 is manually operated, and the other is Pu1se Cod.
'e Modulation (PCM) c, input manually to encoder 13. The three primary color signals RGB converted into analog signals by the D/A converter 11 are sent to the analog signal processing circuit 1.
2, is converted into a luminance signal Y and a color signal C, and is input to the other input terminal of the compensator 5.

6 is an FM modulation circuit for FM modulating the luminance signal Y from the output end of the compensator 5 to make it suitable for recording. 5 is a low frequency conversion circuit for converting the color signal C from the output end of the compensator 5 to a low frequency suitable for recording. The PCM encoder 13 encodes the digital three primary color signals RGB' from the picture memory 10 so as to be suitable for recording on the magnetic tape 22 as a recording medium.

14 is a microphone that collects audio signals.

15 is a processing circuit for amplifying the signal from the microphone 14, and 16 is an FM modulation circuit for FM modulating the signal from the processing circuit 15.

23 is a rotating magnetic head, 8 is a recording formatting circuit, which inputs the luminance signal from the FM modulation circuit 6 and the color signal from the low frequency conversion circuit 7 as a moving image signal;
The PGM signal from the CM encoder 13 is manually generated as a still image 43, and the audio signal from the FM modulation circuit 16 is input and formatted into a signal suitable for recording on the magnetic tape 22. For example, when making it compatible with the so-called 8mm video standard, the moving image signal and the audio signal are frequency multiplexed and recorded on the video and FM audio tracks of the magnetic tape 22 by the rotating magnetic head 23, and the still image signal is The magnetic head 23 records the video on the magnetic tape 22 (CPCM audio track) as an extension of the FM audio track.
to be recorded. Note that the running of the magnetic tape 22 is controlled by a mechanical control 21.

Reference numeral 24 denotes a shutter release button having a two-step stroke that turns on sequentially as it is pressed, and on/off signals of the first and second strokes thereof are input to the system controller 18. The system controller 18 opens the shutter 2 by turning on the first stroke of the shutter release button 24 to start video shooting. That is, by turning on the first stroke of the shutter release button 24, the CCD 3 is driven by the CCD driver 19 to image the subject, and the image signal is input to the analog signal processing circuit 4 and the A/D converter 9. The analog signal processing circuit 4 outputs the luminance signal Y and the color signal C to one input terminal of the compensator 5, while the image signal inputted to the A/D converter 9 is A/D converted there and is converted into a picture. It is temporarily stored in Memo-1O,
It is taken out from the same memory 10 with a delay of one screen period and the D/
The A converter 11 converts it into an analog signal, and the analog signal processing circuit 12 converts it into a luminance signal Y and a color signal C, which are then supplied to the other input terminal of the compensator 5. Therefore, con R~ノ 7-ni -agony /r1 YO尤1
→11 I, ÷ Both sides of the lower eye The brightness and color signals of both sides are supplied to 1, and when the first stroke of the shutter release button 24 is turned on, the signal of the current screen is sent from the compensator 5, that is, analog The luminance signal and chrominance signal from the signal processing circuit 4 are supplied to the FM modulation circuit 5 and the low frequency conversion circuit 7, and the output signals from both circuits 6.7 are input to the recording formatting circuit 8. The image is recorded in the moving image recording area of the magnetic tape 22.

The system controller 18 also controls the picture memory driver 20 to store the image signal from the A/D converter 9 in the picture memory 10 for one screen period (for example, one frame or one field period).

Still image recording is then performed by pressing the shutter release button 24 to the second stroke. That is, the system controller 18 closes the shutter 2 once by turning on the second stroke of the button 24, and then opens it for a predetermined time to expose the CCD 3. After this exposure is completed, the three primary color signals R read out from the CCD 3
GB is sent to the picture memory 10 via the A/D converter 9.
It is read out from the picture memory 10 by the picture memory driver 20 over a time longer than the moving image recording time, encoded into a predetermined code format by the PCM encoder 13, and written to the magnetic tape 22 by the recording formatting circuit 8. It is recorded on the track as an extension of .

Note that the shutter speed (opening time of shutter 2) is l
/30 seconds (one frame period), there is no problem in forming a moving image signal, so the signal extracted from the CCD 3 via the analog signal processing circuit 4 and the compensator 5 is transferred to the magnetic tape as a moving image signal. Record on 22.

Further, when the opening time of the shutter 2 due to the second stroke-on of the shutter release button 24 is longer than 1/30 seconds, that is, when the shutter speed is slow, the system controller 18 controls the compensator 5 while the shutter 2 is open. Then, a signal from the picture memory 10, that is, a signal corresponding to the screen immediately before the shutter 2 is opened, is sent to the D/^ converter 11 and the analog signal processing circuit 1.
2 and compensator 5, and recorded in a recording area for moving image signals. By doing so, the following inconveniences can be solved. That is, when the shutter speed is longer than 1/30 seconds, no signal can be read out from the CCD 3 during the exposure, and if no measures are taken, a so-called blackout will occur during moving image reproduction. Therefore, as mentioned above, when the shutter speed is longer than 1730 seconds, during the exposure,
By extracting the image signal stored in the picture memory 10 at the synchronized timing of a normal moving image signal, forming a recording image signal, and recording this,
It is possible to play video images without blackouts.

Next, the main operations of the system controller 18 will be explained with reference to the flowchart shown in FIG.

First, in step St, it is determined whether the first stroke of the shutter release button 24 is "on", and if it is on, the process proceeds to step s2 and a moving image signal is recorded.

Next, in step s3, it is determined whether the first stroke of the shutter release button 24 is off, and if it is off, the process proceeds to step s4, where the recording of the moving image signal is ended and the process returns to step Sl. On the other hand, if it is not off, the process proceeds to step s5 where it is determined whether the second stroke of the shutter release button 24 is on, and if it is not on, step s
Returning to step 2, if it is on, the process proceeds to step S6 to determine whether the set shutter speed is slower than 1/30 seconds, and if it is not, the process proceeds to step S8, and if it is slow, the process proceeds to step S7 to set the compensator 5. Picture memory 1
Switch to the input end side where the signal from 0 is input, and step S
Proceed to step 8.

In step S8, the shutter 2 is operated at the set speed to expose the CCD 3, and the process proceeds to step S9. Note that the image information accumulated in the CCD 3 due to the operation of the shutter 5 is read out to the picture memory IO at the first transfer timing immediately after the shutter 5 closes when the operation ends.
The image is read out from the Picture Mary 10 to the PCM encoder 13 over a predetermined period of time, and a still image is recorded.

In step S9, moving image recording is continued until still image recording is completed.

Therefore, even if the first stroke of the shutter release button 24 is turned off during this period, moving images and still images will be recorded. Next, in step 510, it is determined whether the first stroke is off, and if it is off, the process proceeds to step Sll to end the moving image recording.

As described above, before recording a still image, the magnetic tape 22 is always loaded and a moving image is recorded.

Also, the PCM encoder 13 is input from the picture memory lO.
While still image signals are being recorded in the PCM area of the tape 22 via the Both videos and still images can be recorded simultaneously. Therefore, the moving image signal is always recorded simultaneously before and after the still image signal, which is advantageous for searching for still images during playback. Note that during playback, still images can be easily searched for by performing a so-called high-speed picture search on moving images. For example, if you send a 30-minute tape at 10x speed, you can watch the entire tape in 3 minutes. If one still image is recorded for every 30 seconds of video, a 30 minute tape will contain 60
Since it can record several still images and search them in 3 minutes, it is extremely effective in practical terms.

In the above embodiments, the shutter 2 operates in two strokes, but it goes without saying that separate shutters may be provided for moving images and still images. In such a case, it would be more convenient to use the device if some kind of display indicating that still images can be recorded is displayed until the still image shutter is activated and closed, that is, until loading is performed. This also applies to the two-stroke shirt release button, but when separate shutters are provided for moving images and still images, the operation can be performed more reliably.

Furthermore, the imaging means may be other than a CCD.

(Effects of the Invention) As described in detail above, according to the present invention, it is possible to provide an image information recording device that can record moving images without so-called blackouts together with still images.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the system controller. 1... Lens, 2... Shutter, 3... CCD element, 4... Analog signal processing circuit, 5... Compensator, 6... FM modulator, 7... Low frequency conversion Circuit, 8... Recording formatting circuit, 9... A/D
Converter, lO... Picture memory, 11.12... D/A converter, 13... PCM encoder, 14... Microphone, 15... Audio processing circuit, 16... FM modulator , 17... Synchronization signal generator, 18... System controller, 19... CCO driver, 20... Picture memory driver, 21... Mechanical control, 22... Tape, 23... Head, 24...switch.

Claims (1)

[Claims] a recording means for recording a moving image information signal and a still image information signal in separate areas on the same recording medium; a shutter member for creating a still image; a storage means for storing a part of the moving image signal; 1. An image information recording apparatus comprising: supply means for supplying a moving image signal stored in the storage means to the recording means during a still image creation period by the shutter member.