JPH0568230A - Magnetic recording photographing device - Google Patents

Abstract

PURPOSE:To fetch a binary still picture. CONSTITUTION:In the case that the binary still picture is recorded by binarization-processing a video signal from an image pickup device 1 by a binary picture generation circuit 3, and storing a binary still picture signal in a memory 4, the binary still picture signal stored in the memory 4 is added to a video signal inputted from the image pickup device 1 to a video recording processing circuit 7 by an adder 6, and is recorded by a magnetic head 15. Then, the moving picture signal of the still picture recording area reproduced by the magnetic head 15 or the synthetic picture signal of the moving picture and the binary still picture is signal-processed by a video reproduction processing circuit 17, and the reproduced still picture signal of the still picture recording area is signal-processed by a reproduced still picture signal processor SP.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording and photographing apparatus for recording moving images and still images.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for high-density recording in the field of magnetic recording. For example, in a video tape recorder (VTR), it is necessary to reduce the tape running speed and perform high-density magnetic recording. Is becoming.
For example, when an audio signal is recorded by using a fixed head, if the tape running speed is simply lowered, the relative speed cannot be increased and the reproduction sound quality deteriorates. A method is adopted in which the audio signals are lengthened and the time-axis compressed audio signals are sequentially recorded in the extended portions.

Rotating 2-head helical scan type V
Specifically, taking TR as an example, the magnetic tape 23 is wound around the rotary cylinder 24 by (180 + θ) degrees or more (see FIG. 4), and the video signal recording area portion 26 (FIG. 5) is 180 degrees of the rotary cylinder 24. The PCM audio signal recording area portion 27 (FIG. 5) is traced by the magnetic heads 25a and 25b for the θ degree of the rotary cylinder 24. In the PCM audio signal recording area portion 27, a PCM-compressed and time-compressed audio signal is recorded.

As an application of the method of recording a digital signal in another area while recording a video signal in this way, it has been proposed to record a still image in the digital signal recording area as a digital signal. Since the still image has a small amount of information, it is possible to record all the information on the magnetic tape by scanning the PCM audio signal recording area a plurality of times. According to this method, not only can a still image be captured using the same recording medium as the same image capturing device as that for capturing a moving image, but also a high-quality still image can be obtained. This still image is
The image quality is higher than that of a still image in which the running of the magnetic tape is stopped and the video signal of the same track is reproduced.

[0005]

A camera-integrated VTR (hereinafter referred to as a camcorder) using the above-described system is
There has not been proposed what is called a digital memo that can capture a binarized still image.

An object of the present invention is to provide a magnetic recording and photographing apparatus which solves the above problems.

[0007]

The present invention comprises an image pickup means,
A moving image signal processing unit that processes a video signal from the image pickup unit to obtain a moving image signal during moving image shooting, and a signal processing of the image signal from the image pickup unit during still image shooting performed simultaneously with moving image shooting. And a still image signal processing means for generating a still image signal, and a still image signal from the still image signal processing means is recorded in a still image recording area of an inclined track of a magnetic tape, and a moving image from the moving image signal processing means is recorded. Recording means for recording an image signal in the moving image recording area of the inclined track, and a moving image signal recorded in the moving image recording area by reproducing the still image signal recorded in the still image recording area by the recording means. In a magnetic recording / photographing apparatus having a reproducing means for reproducing an image, a binarization processing means for binarizing a video signal from the imaging means, and a binarized still image from the binarization processing means. When storing a binarized still image with a storage means for storing a signal, the binarized still image signal stored in the storage means is converted into a video signal input from the imaging means to the moving image signal processing means. A still image recording area reproduced by performing signal processing on the adding means for adding and the moving image signal of the moving image recording area reproduced by the reproducing means or the combined image signal of the combined image of the moving image and the binarized still image. And a signal processing means for processing the still image signal.

According to the present invention, the reproducing means reproduces the binary still image signal from the storing means or the switching means for inputting either the video signal from the image pickup means to the still image processing means. Either a still image signal in the still image recording area or a binarized still image signal that is reproduced by signal processing of a moving image signal in the moving image recording area or a combined image signal of a combined image of a moving image and a binarized still image. It is characterized in that it is provided with a signal processing means for performing signal processing on one of them and synthesizing the reproduced still image in the still image recording area and the binarized still image.

Further, one of the binarized still image signal from the storage means, the video signal from the image pickup means, or the composite image signal of the composite image of the moving image and the binarized still image from the addition means is a still image. The switching means input to the processing means and the moving image signal of the moving image recording area reproduced by the reproducing means, or the combined image signal of the combined image of the moving image and the binarized still image is subjected to signal processing to reproduce the still image. Signal processing means for signal-processing either the still image signal in the recording area or the binarized still image signal, and synthesizing the reproduced still image in the recording area and the binarized still image are provided. Is characterized by.

[0010]

In the present invention, the video signal from the image pickup means is binarized by the binarization processing means, and the binary signal from the binarization processing means is used.
When the binarized still image signal is stored in the storage unit and the binarized still image is recorded, the binarized still image signal stored in the storage unit is input to the moving image signal processing unit from the image capturing unit. Is added by the adding means, and the moving image signal of the moving image recording area reproduced by the reproducing means or the combined image signal of the combined image of the moving image and the binarized still image is processed by the signal processing means and reproduced. The still image signal in the still image recording area is processed by the signal processing means.

Further, in the present invention, either one of the binarized still image signal from the storage means or the video signal from the image pickup means is input to the still image processing means by the switching means and reproduced by the reproducing means. The moving image signal in the moving image recording area, or the combined image signal of the combined image of the moving image and the binarized still image is signal-processed by the signal processing means, and the reproduced still image signal in the still image recording area or the binary still image is reproduced. One of the image signals is processed by the signal processing means, and the reproduced still image in the still image recording area and the binarized still image are combined by the signal processing means.

Further, according to the present invention, any one of the binarized still image signal from the storage means, the video signal from the image pickup means, or the composite image signal of the composite image of the moving image and the binarized still image from the adding means. One of them is input to the still image processing means by the switching means, and the moving image signal of the moving image recording area reproduced by the reproducing means or the combined image signal of the combined image of the moving image and the binarized still image is signaled by the signal processing means. The processed and reproduced still image signal in the still image recording area or the binarized still image signal is signal-processed by the signal processing means, and the reproduced still image in the still image recording area and the binarized still image are processed. Are combined by the signal processing means and processed by the signal processing means.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings.

First Embodiment FIG. 1 shows a first embodiment of the present invention. This is an example of a camcorder.

FIG. 1A shows the recording system of the camcorder of this embodiment. In the figure, 1 is an imaging device. A binarized image generator 3 binarizes a desired image captured from the image pickup device 1 via the switch 2 to generate a binarized image. A memory 4 stores a binarized image signal from the binarized image generator 3. An adder circuit 6 adds a binarized image signal input from the memory 4 via the switch 5 and a video signal from the image pickup device 1 to generate a combined signal. Reference numeral 7 denotes a video recording processing circuit, which video-records the combined signal from the adding circuit 6.

SR is a recording and still image signal processing device, and A /
It is composed of a D converter 9, a video memory 10, a digital signal processing circuit 11, a data compression circuit 12 and a PCM recording processing circuit 13.

The A / D converter 9 converts the video signal from the image pickup device 1 into a digital signal. The digital signal processing circuit 11 is for processing the digital signal from the video memory 10. Video memory 10 is A
The digital signal from the / D converter 9 is stored, and the signal processed by the digital signal processing circuit 11 is also stored. The data compression circuit 12 is for data-compressing the signal after signal processing stored in the video memory 10. The PCM recording processing circuit 13 performs PCM conversion as well as rate conversion for distributing the signal compressed by the data compression circuit 12 to a plurality of tracks in the PCM area.

Reference numeral 14 is a recording amplifier, which amplifies signals from the video recording processing circuit 7 and the PCM recording processing circuit 13. Reference numeral 15 is a recording head.

FIG. 1B shows a reproducing system of the magnetic recording / reproducing apparatus of this embodiment. In the figure, 15 indicates the same portion as that in FIG. A reproducing amplifier 16 amplifies a signal from the magnetic head 15.

Reference numeral 17 denotes a video reproduction processing circuit for performing video reproduction processing on the signal of the moving image recording area reproduced by the magnetic head 15.

SP is a reproduction still image signal processing device, and is a PC
M reproduction processing circuit 18, expansion circuit 19, video memory 20,
It is composed of a digital signal processing circuit 21 and a D / A converter 22.

The PCM reproduction processing circuit 18 includes a magnetic head 15
The signal of the still image recording area reproduced by is processed. The expansion circuit 19 is a PCM reproduction processing circuit 18
The signal processed by is expanded. The video memory 20 stores the signal expanded by the expansion circuit 19 and also stores the signal processed by the digital signal processing circuit 21. The digital signal processing circuit 21 processes the expanded digital signal from the video memory 20 such as gamma correction. The D / A conversion circuit 22 converts the signal after the signal processing from the video memory 22 into an analog signal.

Next, the operation during recording will be described.

At the time of shooting a moving image, the video signal from the image pickup device 1 is video recorded by the video recording processing circuit 7,
After being amplified by the recording amplifier 14, it is recorded by the magnetic head 15 in the moving image recording area of the inclined track of the magnetic tape.

When a switch 2 is turned on when a binary image is taken in, an image desired to be binarized is taken in from the photographing device 1, binarized by the binarized image generating circuit 3, and binarized. The converted image signal is stored in the memory 4. And
When the switch 5 is turned on at an arbitrary timing, the adder 6 adds the binarized image signal from the memory 4 and the video signal from the image pickup apparatus 1, and the added signal is video-recorded by the video recording processing circuit 7. Processed and recording amplifier 14
After being amplified by, the magnetic head 15 records the moving image on the inclined track of the magnetic tape. A composite image signal of a moving image and a binarized image is recorded in the moving image recording area.

If a still image is taken during moving image shooting, the video signal from the image pickup device 1 is processed by the recording still image signal processing device SR and is amplified by the recording amplifier 14 while recording the video signal in the moving image recording area. After that, the data is recorded by the magnetic head 15 in the still image recording area of the inclined track of the magnetic tape.

The operation at the time of recording a still image will be described in more detail. The video signal from the image pickup device 1 is A / D converter 9
Is converted into a digital signal and stored in the video memory 10. The data from the video memory 10 is processed by the digital video signal processing circuit 11, and the processed signal is stored in the video memory 10. Video memory 1
The signal after signal processing from 0 is subjected to signal compression processing by the data compression circuit 12 and PCM recording processing by the PCM processing circuit 13. The signal after the PCM recording process is the recording amplifier 1
It is amplified by 4 and recorded by the magnetic head 15 in the still image recording area of the inclined track of the magnetic tape. Only still images are recorded in the still image recording area.

Next, the operation during reproduction will be described.

When the still image signal recorded in the still image recording area is reproduced by the magnetic head 15, the still image signal is amplified by the reproducing amplifier 16, processed by the reproduced still image signal processing device SP, and output. ..

That is, when the still image signal recorded in the still image recording area is reproduced by the magnetic head 15, the still image signal is amplified by the reproducing amplifier 16 and P
The CM reproduction processing circuit 18 performs PCM reproduction processing, the data expansion circuit 19 expands the data, and the video memory 20.
Written in. Then, the digital signal processing circuit 21
Digital signal processing by the D / A converter 22
Is converted into an analog signal and output.

When the moving image signal recorded in the moving image recording area is reproduced by the magnetic head 15, the moving image signal is amplified by the reproduction amplifier 16, processed by the video reproduction processing circuit 17, and output.

Second Embodiment FIG. 2 shows a second embodiment of the present invention.

Compared with the first embodiment, this embodiment is as follows.
The signals recorded in the still image recording area of the inclined track of the magnetic tape are different. That is, in the first embodiment, only the still image signal is recorded, but in the present embodiment, the switch 8 is used to switch to either the memory 4 or the image pickup apparatus 1, and the still image signal and the binary value are stored. The modified image signal is recorded separately. The structure of the reproducing system is omitted because it does not differ from that of FIG.

Next, the operation during recording will be described.

However, the operation at the time of recording a moving image is not different from that of the first embodiment, and therefore its explanation is omitted.

When the still image signal is recorded in the still image recording area, the switch 8 is switched to the image pickup apparatus 1 side.
The video signal from the image pickup device 1 is input to the recording still image signal processing device SR via the switch 8, the video signal is processed by the recording still image signal processing device SR, amplified by the recording amplifier 14, and then the magnetic head. The data is recorded in the still image recording area of the inclined track of the magnetic tape by 15.

When the binary image signal is recorded in the still image recording area, the switch 5 is turned on and the switch 8 is switched to the memory 4 side. When the switch 5 is turned on, the moving image signal and the binarized image signal are added in the same manner as in the first embodiment, and the combined image signal obtained by the addition is added to the moving image recording area of the inclined track of the magnetic tape. To be recorded.

When the switch 5 is turned on,
When the switch 8 is switched to the memory 4 side, the memory 4
The binarized image signal from is input to the recorded still image signal processing device SR via the switch 8. The binarized image signal is processed by the recording still image signal processing device SR, amplified by the recording amplifier 14, and then recorded in the still image recording area by the magnetic head 15.

Next, the operation during reproduction will be described.

Since the operation at the time of the moving image signal recorded in the moving image recording area is not different from that of the first embodiment, its explanation is omitted.

When the still image signal recorded separately in the still image recording area or the still image signal of the binarized image signal is reproduced by the magnetic head 15, the magnetic head 1
The still image signal from 5 is amplified by the reproduction amplifier 16, processed by the reproduction still image signal processing device SP, and output.

When the still image signal or the binary image signal of the binary image signal recorded separately in the still image recording area is reproduced by the magnetic head 15, the binary image signal from the magnetic head 15 is reproduced. Is amplified by the reproduction amplifier 16 and processed by the reproduction still image signal processing device SP,
Is output.

When the still image signal and the binarized image signal separately recorded in the still image recording area are reproduced by the magnetic head 15, the still image signal and the binarized image signal from the magnetic head 15 are reproduced by a reproduction amplifier. The digital signal processing circuit 2 of the reproduction still image signal processing device SP amplified by 16
1 is combined, converted into an analog signal by the D / A converter 22, and then output.

Third Embodiment FIG. 3 shows a third embodiment of the present invention.

In comparison with the second embodiment, this embodiment is as follows.
The signals recorded in the still image recording area of the inclined track of the magnetic tape are different. That is, in the second embodiment, either the memory 4 or the image pickup apparatus 1 is switched by the switch 8 so that the still image signal and the binarized image signal are recorded separately. In the present embodiment, the switch 48 is used to switch to either the memory 4, the image pickup apparatus 1, or the adder 5, so that the still image signal and
In addition to recording the binarized image signal separately, a still image signal and 2
A composite image signal obtained by adding the binarized image signals is recorded. The structure of the reproducing system is omitted because it does not differ from that of FIG.

Next, the recording operation will be described.

However, the operation at the time of recording a moving image is not different from that of the first embodiment, and the description thereof will be omitted.

When the still image signal and the binarized image signal are separately recorded in the still image recording area, the switch 5 is turned on as in the second embodiment, and the switch 48 is set in the memory 4 according to the signal to be recorded. Alternatively, the image capturing apparatus 1 is switched to either one. When the switch 5 is turned on, the moving image signal and the binarized image signal are added in the same manner as in the second embodiment, and the combined image signal obtained by the addition is added to the moving image recording area of the inclined track of the magnetic tape. To be recorded.

When the switch 5 is turned on and the switch 48 is switched to either the memory 4 or the image pickup apparatus 1 in accordance with the signal to be recorded, it is input to the recording still image signal processing apparatus SR via the switch 48. The signal is processed by the recording still image signal processing device SR, amplified by the recording amplifier 14, and then recorded by the magnetic head 15 in the still image recording area of the inclined track of the magnetic tape. The still image signal and the binarized image signal are separately recorded in the still image recording area.

When a signal of a combined image of a still image and a binarized image is recorded in the still image recording area, the switch 5 is turned on and the switch 48 is switched to the adder 6 side. The combined signal input from the adder 6 to the recording still image signal processing device SR via the switch 48 is processed by the recording still image signal processing device SR, amplified by the recording amplifier 14, and then magnetically taped by the magnetic head 15. Is recorded in the still image recording area of the tilted track.

Next, the operation during reproduction will be described.

Since the operation at the time of the moving image signal recorded in the moving image recording area is not different from that of the second embodiment, the description will be omitted.

In addition, the still image signal and the binarized image signal separately recorded in the still image recording area are recorded by the magnetic head 15.
Since the operation in the case of being reproduced by is not different from that of the second embodiment, the description will be omitted.

When the composite image signal of the composite image of the still image and the binary image recorded in the still image recording area is reproduced by the magnetic head 15, the composite image signal from the magnetic head 15 is amplified by the reproduction amplifier 16. Then, the reproduced still image signal processing device SP processes and outputs.

[0055]

As described above, according to the present invention,
Since it is configured as described above, there are the following effects (1) to (4).

(1) When recording a moving image, a binarized still image can also be recorded.

When a composite image of a moving image and a binarized still image is being recorded, only the still image can be recorded in the still image recording area.

(2) When recording a composite image of a moving image and a binarized still image, the still image and the binarized still image can be recorded separately in the still image recording area.

(3) Still image processing of a still image, a binarized still image, or a composite image of a moving image and a binarized still image when a composite image of the moving image and the binarized still image is being recorded. It is possible to select and record either one of the still combined images obtained in this way.

(4) The still image and the binarized still image separately recorded in the still image recording area can be reproduced and then combined.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing a recording system of a camcorder according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a recording system of a camcorder according to a third embodiment of the present invention.

[FIG. 4] V for recording and reproducing a video signal and an audio signal
It is a figure which shows the magnetic tape running system of TR.

5 is a diagram showing an example of a recording track on a magnetic tape by the heads 25a and 25b shown in FIG.

[Explanation of symbols]

 1 Imaging Device 2, 5, 48 Switch 3 Binary Image Generation Circuit 4 Memory 6 Adder 7 Video Recording Processing Circuit SR Recording Still Image Signal Processing Device 9 A / D Converter 10 Video Memory 11 Digital Signal Processing Circuit 12 Data Compression Circuit 13 PCM recording processing circuit 14 recording amplifier 15 magnetic head 16 reproduction amplifier 17 video reproduction processing circuit SP reproduction still image signal processing device 18 PCM reproduction processing circuit 19 data expansion circuit 20 video memory 21 digital signal processing circuit 22 D / A converter 23 magnetic Tape 24 Rotating cylinder 25a Magnetic head a 25b Magnetic head b 26 Video signal recording area 27 PCM audio signal recording area

Claims (3)

[Claims] 1. An image pickup means, a moving image signal processing means for processing a video signal from the image pickup means into a moving image signal at the time of shooting a moving image, and a still image shooting performed at the same time as the moving image shooting. Still image signal processing means for processing a video signal from the image pickup means to generate a still image signal, and recording the still image signal from the still image signal processing means in a still image recording area of an inclined track of a magnetic tape, Recording means for recording the moving image signal from the moving image signal processing means in the moving image recording area of the inclined track, and reproducing the still image signal recorded in the still image recording area by the recording means to obtain the moving image. In a magnetic recording and photographing device having a reproducing means for reproducing a moving image signal recorded in a recording area, a binarization processing means for binarizing a video signal from the imaging means, and the binary value. When the binarized still image is recorded, the binarized still image signal from the processing unit is stored. When the binarized still image is recorded, the binarized still image signal stored in the storage unit is transferred from the imaging unit to the moving image signal. Addition means for adding to the video signal input to the processing means, and signal processing of the moving image signal of the moving image recording area reproduced by the reproducing means or the combined image signal of the combined image of the moving image and the binarized still image. And a signal processing means for processing the still image signal of the reproduced still image recording area. 2. The switching means for inputting either the binarized still image signal from the storage means or the video signal from the image pickup means to the still image processing means, and the reproduction according to claim 1. The signal processing of the moving image signal of the moving image recording area reproduced by the means or the combined image signal of the combined image of the moving image and the binarized still image is processed, and the reproduced still image signal of the still image recording area or binarization is performed. A magnetic recording and photographing apparatus comprising: a signal processing unit that processes one of still image signals and synthesizes a still image in a reproduced still image recording area and a binarized still image. 3. The composite image according to claim 1, wherein the binarized still image signal from the storage unit, the video signal from the image pickup unit, or the composite image of the moving image from the adding unit and the binarized still image. Switching means for inputting either one of the signals to the still image processing means, a moving image signal of a moving image recording area reproduced by the reproducing means, or a combined image signal of a combined image of a moving image and a binarized still image. Signal processing is performed, and either the still image signal of the reproduced still image recording area or the binarized still image signal is signal processed, and the still image of the reproduced still image recording area and the binarized still image are combined. A magnetic recording and photographing device comprising: a signal processing unit for processing.