JPS58153473A - Recording/playback device - Google Patents

Abstract

PURPOSE:To record a picture of high quality or numbers of pictures when necessary, by recording selectively both or a single side of two secondary picture signals having half image resolution to a disk. CONSTITUTION:The picture signal supplied from an image pickup circuit 1 is recorded to a disk 6 via a recording circuit 2 and heads 4 and 5. In a reproduction mode, this recorded picture signal is reproduced out of the disk 6 by a reproducing circuit 11 and via heads 8 and 9 and delivered through a terminal 14. The circuit 2 delivers two secondary picture signals having 1/2 image resolution. Both or a single side of these two picture signals is recorded selectively to the disk 6 with operation of a push-button 15. Both secondary picture signals are recorded to obtain a picture of high quality; while just a single side of the two picture signals is recorded to increase the number of recording sheets, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a two-scythe reproducing apparatus for electronic imaging, and more particularly to a still image recording and reproducing apparatus.

So-called electronic cameras are known that combine a video camera and a disc that records and reproduces magnetically or optically. Although this electronic camera cannot perform long-term video recording such as VTR using magnetic tape,
It is possible to capture and record several dozen to η still images on an ultra-small disk with a radius of several centimeters, and it is smaller, lighter, and easier to operate than a combination of a video camera and a VTR. It is characterized by its frequency.

The requirements for this electronic camera are considered to be (υ high image quality and (21) large number of shots,
For this purpose, the recording signal format of the disc, the recording track allocated to each image, and the design of the pitch are carefully examined from each perspective, but the ultimate goal is to achieve a single image capture and a uniform performance. 9.There is a constraint that comes from the principle that the wider the area on the matching disk, the better the image quality, or the smaller the number of images that can be recorded, so it is not possible to fully satisfy both requirements. .

An object of the present invention is to provide a device that simultaneously satisfies both of the above requirements for an electronic camera.

The present invention meets the above two requirements by taking advantage of the special characteristics of television signal formats.

It is based on the idea that it is possible to satisfy both requirements at the same time.

In other words, TVJine No. 18 divides one original image into two 0sin images, each of which is the same as the original ms except that the vertical resolution is 2. By sequentially transmitting images on the time axis and interlacing scanning on the display screen, the resolution possessed by n and *mo is reproduced and high image quality is obtained. Therefore, the electronic camera is equipped with an operation Ig, and when this operation ML instructs high image quality, the original image is recorded as is, that is, on two recording tracks of two sub-images, and the operation button instructs the number of recordings. In such cases, only one side of the sub-picture is recorded on one recording track, so that the operator's request can be met each time. In this case, the operation m at the same time as recording one
By encoding and recording the instruction 1, the settings of the reproducing circuit can be automatically performed at the time of reproduction.

An embodiment of the present invention will be described below with reference to the configuration shown in FIG. 1. In the figure, 1 is an imaging circuit such as a video camera, 2 is a recording (b) path, 3. 10° 13id electronic switch, 4.5.8.9 is, 6 is a disk, and 7 is a disk 6 11 is a reproduction circuit, 12 is a delay 914 having a delay time approximately equal to the period of the horizontal synchronizing signal of TV Gene M, 15 is an operation button, 16 is a control circuit, 17 is a kakunta that counts the number of shadows. FIGS. 2 and 3 are conceptual state diagrams for explaining the recording operation and reproduction operation of the fixed configuration shown in FIG. 1, respectively.

The first signal captured by the image pickup circuit 1 by operating the shutter ml (not shown) is transferred to the recording circuit 20 by the action of the recording circuit 20.
During playback, this recorded signal is transmitted from the disk 6 to the playback circuit 11 via the dots 8 and 9, and is output from the terminal 14 for self-recording and playback operation. Although this is a general outline, since this operation itself is a normal magnetic recording/reproducing operation such as in a VTR@picture, a detailed explanation thereof will be omitted.

First, the recording operation will be explained using FIG.

Figure 2 (a) shows the number of tracks set in advance on the disk 6, with the nth track number indicated by the symbol n;
Can record 1 sheet of 7 sides. The actual recording track is disk 60.
They are arranged regularly on the circumference, which is shown in a schematic diagram in which they are arranged in order from left to right in the figure. Same figure (b)
, (C), and (d) respectively show the image recorded on the corresponding track number, the contents of the sheet number counter 7, and the head used for recording. 15 operation buttons! 1! Although the process is not shown, in the example in Figure 2, the number of shots is 1.2.3.
, ---- In order of high resolution side, multi-sheet image side, multi-sheet image side, -111, the number of sheets counter corresponds to I, II, 厘, -. -m-, but this instruction is shown as a result in the same figure as will be described later.

When the number counter was 7, that is, the first recording, the operation button 15 was instructing to record the high-rise statue. Therefore, among the output image signals of the imaging circuit 1, the recording circuit 2 outputs the sub-image signal A2 of the first sub-surface of interest to the number 2 of the disk 6.
Record the information as shown in Figure 2 (1). In this case, the control circuit 16 switches y'''3 so that the respective signals are connected to the head 4.5 during the period in which the signals tIF, gis, At, and 2 arrive. as shown in FIG.
The instruction contents and the distinction between the sub-image signals are multiplied as codes, and these are recorded on the disk 6. Therefore, in this case, both of the two sub-image signals are recorded on the disk 6.
As will be described later, high-quality playback becomes possible.

When the number of images counter 17 was in summer, that is, during the second imaging, the instruction from the operation button was to take and record a large number of images. Therefore, the recording circuit 2 (II image circuit 1 output image gI!
Among the signals, only the 1st m1 S image signal B1 is sent to the disk 6.
3, atoms are added as shown in Figure 2(b).
Only the polarization code B1 is recorded.

In this case, the control circuit 16 multiplexes the instruction contents of operation *15 as a code into the sub-image signal B1, and transmits this to the disk 6 by 8t.
Make it so that you can be loved. In this case, the track or recording track used is only number 3, so the electronic switch %3 is
Do4114! Just being I is fine. Below, the recording operation is performed according to the operation of the operation button 15 and the advance of the number of sheets counter 17.The recording operation is performed in accordance with the operation of the operation button 15 and the advance of the number of sheets counter 17. It is obvious that imaging and recording of a large number of images is performed sequentially using only one track.

Next, the reproduction operation will be explained using FIG.

FIG. 3(a) schematically shows the contents of the sheet number counter 17, and FIG. 3(b) shows the number and number of the disc 6 corresponding to the C-fold. In the illustrated example, this relationship is the same as that at the time of recording in FIG. 2 for ease of understanding. The contents of number counter 17! If so, disk 6 has a tiger,
Two Iaiii images for $1 and #2 1. Only one person, Mukomu, is recorded.

The control circuit 16 is connected to the head 8 or the head 9 in advance.
This is detected by decoding the instruction of the operation button 15 at the time of recording which is multiplexed with the output signal of the
Each sub-image signal At,
Supply A2. In this case, since one original image in the TV program signal format is output from the reproduction circuit 14, if the switch 15 is on the side where the II connection terminal 14 and the reproduction circuit 14 are connected, the switch 15 is connected to the terminal 14. A high-quality reproduced image can be obtained on nine connected television monitors.

If the content of the number of copies counter 17 is I, the same reproduction method as C cannot be used. The reason for this is that, although it is true that the desired image of the first image is recorded on the recording track No. 3, the number counter 17, which has no relation to this sub-image, is recorded on the recording track No. 4. There is a record of a sword, shield, and sword whose contents are similar to that of an image. Therefore, if this recorded state is reproduced as is by the method described above, two images that are completely unrelated to each other will be displayed as duplicates on the TV monitor (not shown) connected to the terminal 14. Therefore, in this case, the control circuit 16 detects this by decoding the instruction of the insertion button during recording which is multiplexed with the output signal of the head 8 or the head 9, and the control circuit 16 turns the switch f10 as shown in FIG. 3(d). As shown in the figure, the third
As shown in Figure (c) K, only the same mJ 1iij image defect code B1 is inputted in return. In this case, the control circuit 16 adjusts P13 to the continuation cycle of the sub-image signal B1, turns P9, and outputs the output signal of the reproducing circuit 11 to the electronic 14 so that the sub-image signal B1 is unchanged or #11iii. It would be better if the signal B1 is delayed by one button and outputted by the delay line 12 during the period of the horizontal synchronizing signal of the television signal. The reason for this is that in order to smoothly perform interlaced scanning of the two sub-screens on TV 1-Gi, the transmission period of each image is shifted by the period of the horizontal synchronization signal, whereas ! Since the sub image signal B1 is generated at the same period from 1 to 1, if this image is displayed on a TV monitor, a so-called gap will appear at the top of the screen. I recorded only one of the two 114-screen images and selected the number of images using the operation button 15 to reproduce the 1m surface of the disc 6.

-It is obvious that the case of 11111 can be reproduced in the same way.

In the above explanation, the codes of the control circuits 16 to 16 and the multiplexing method thereof that are multiplexed to the respective mllii surface signals have not been explained.
It is also possible to perform time axis multiplexing by making IiK compatible with the ii screen signal and inserting it at a predetermined position in the horizontal retrace period I'IaTo or the horizontal retrace period of the TV 17 signal format. Frequency multiplexing may be performed outside or within the recording band, or a spatial K11 may be used on the disk 6 using a head (not shown) for codes other than the head 4.5. In addition, in the above explanation, the number of 1iirN images actually taken was used as the instruction for the number of pictures counter 17, and in the explanation of the above operation, the display content of the number of pictures counter 17 itself does not directly play an important role. It is clear that in the operation of an electronic camera, the number counter 17 is not the number of actually captured images, but rather the number of unrecorded tracks on the disk 6, or the number of unrecorded tracks on the disk 6.
A predetermined total number of tracks that can be recorded in a predetermined number of tracks, and a predetermined number of tracks that are unrecorded by calculating backwards from the number of tracks that can be recorded.
It is rather desirable to count the number of times. In this case, the number of sheets counted by the number of sheets counter 170 is higher** depending on the instruction content of the operation button 15.
In the case of a sharp image, the number is increased by 2, and in the case of capturing a large number of images, the number is increased by 1. In the nine embodiments above, subscreen 1
Although it is assumed that the first FF11m surface signal is recorded on only one recording track, it may be only one of the first or second signal, or both may be mixed.

Furthermore, since the essence of the present invention relates to a method for recording and reproducing image signals recorded on the disk 6, the recording method of the recording disk may be magnetic, optical, or oil-based. Also, rather than an imaging device or a video camera, the signal from a TV receiver or a VTR etc.
However, any signal format such as a television signal format or a similar signal format may be used.

As explained in detail above, one shot E! According to iiK, high-quality image recording and playback is possible, although the number of images that can be recorded is limited by using a single disk, or the recorded image quality is slightly degraded, depending on the operation of the operation button. The number of recorded images can be twice as many as the former, or these can be mixed on one disk, and the operator can select one of them with priority each time depending on the shooting surface. Not only this, but the effects are great, such as automatically distinguishing between the two types of recorded signals during reproduction, and obtaining a good reproduced image in either case.

In addition, in one embodiment of the present invention described using FIG. 1,
During playback, there is no way to describe the case where 8 and 9 do not detect the command of operation m115, or in this case there is no detection method to confirm that an image is indeed recorded on that track. As far as possible, it is best to display black on the monitor 1m to avoid noise patterns, such as by outputting only the synchronization signal of the television system to the terminal 14.

Further, Ku, to the control circuit 16 at the initial stage of playback.

While the code is being decoded from the output signals of the doss 8 and 9, a black 1 is sent to the terminal 14 and the reproduction signal from the doss 8 and 9 is replaced by a black 1.
It would be better to output a signal that indicates the current value.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of the recording and reproducing apparatus according to the present invention, and FIGS. 2 and 3 are conceptual operations for explaining the recording operation and reproducing operation of the configuration shown in FIG. 1, respectively. This is an explanatory diagram. 1: Imaging circuit, 2: Recording circuit, 6: Disk, 7: Drive device, 11: Reproduction circuit, 12: Delay line, 15: Operation button, 16
: Control circuit, 17: Number of sheets counter. Representative Patent Attorney Susuki 1) Yuki Toshi

Claims (1)

[Claims] 1. In a recording/reproducing device having a disk for recording a television signal, both of two image signals constituting the image signal of the television signal are recorded on the disk. A first recording means, a second recording means for recording only one side of the lfflI signal to the disc, and an operation button, and according to a command from the operation button, the first means and the second recording means are recorded. A recording/reproducing device characterized in that one of the means can be selected. 2. In the ML recording and reproducing apparatus described in Item 1 of Box #A of the request for %Flf#w, the first and second codes corresponding to the first recording means and the second recording means are provided. If the first recording means is selected, the first code is added to the image signal. If the second recording means is selected, the second code is multiplexed to the litlIm image signal. A recording/playback device with various features. (5) In the digital reproduction device as set forth in claim 2, a first reproduction means for sequentially and repeatedly reproducing two sub-#J signals from a nuclear disk, and one sub-#J signal from the nuclear disk. It is equipped with a second reproduction means for repeatedly reproducing only the image signal, and a detection means for detecting the first symbol inserted into the mosquito disk. When the detection means detects the wrinkle 1 reproduction means with the second code, the second code is detected.
A recording and reproducing device characterized by a flexible selection of reproducing methods. 4. In the recording and reproducing apparatus as set forth in claim 3, the reproduction is not performed when the detecting means is in operation or when either the detecting means or the first code or the second code cannot be detected. A recording/reproducing device characterized in that it outputs a black signal or a signal corresponding thereto. 5. The recording and reproducing device according to any one of claims 1 to 4, further comprising a cuff/rec.
If the first recording means is selected, the contents are accumulated by a predetermined number, and if the first recording means is selected, the contents are summed up by half of the order. d recording/reproducing device characterized by calculating. 6.4I#I! In the recording and reproducing device described in FtfI request standard 823 to 5.
If the second reproduction means is selected,
Each time the i11 image signal, which is a reproduced signal by the second reproduction means, is output, it is passed through the delay line and then outputted, and the operation of passing it through and directly outputting it to r is repeated. A recording/playback device characterized by: