JPS592493A - Recorder and reproducer - Google Patents

Abstract

PURPOSE:To simplify the head feeding mechanism and to set automatically a reproducing circuit at reproduction, by performing the head feeding control at each 2-track and coding and recording a command of an operating button at the same time with the recording operation. CONSTITUTION:A picture signal image pickup up at an image pickup circuit 1 is recorded on a disc 6 via two heads 4, 5 with the operation of a recording circuit 2. A control circuit 16 is connected to a head drive circuit 9 and the circuit 2 driving the heads 4, 5, and the operating button 15 and a reproducing picture switching button 18 or the like are connected to the circuit 16. The content of command of the operating button 15 is encoded with the circuit 16 and multilexed on a sub-picture signal and the result is recorded on the disc 6. Further, reproducing heads 4', 5' are provided corresponding to the disc 6, a signal from heads 4', 5' is reproduced with a reproducing circuit 12 through the control of the circuit 9 and outputted from a lterminal 14. Further, the feeding of the heads 4, 5, 4', 5', is done at each two-track, the to simplify head feeding mechanism, is simplified and to set to the circuit 12 at reproduction automatically.

Description

[Detailed description of the invention] The present invention relates to an electronic image capturing, recording and reproducing device.

In particular, the present invention relates to a still image recording and reproducing device.

2. Description of the Related Art So-called electronic cameras are known, which combine a video camera with a disc that can record and reproduce magnetically or optically. Although this electronic camera cannot capture and record images on a magnetic surface, it can capture and record tens to hundreds of still images on an ultra-small disk with a radius of several centimeters.
The device is characterized by being smaller, lighter, more compact, and easier to operate than a combination of a video camera and VTR.

The requirements for this electronic camera are considered to be (1) high image quality, and (2) a large number of shots. Track width and pitch design must be carefully examined from each perspective.In terms of image quality, the wider the area on the disk allocated to one shooting and recording, the higher the image quality will be.
Since there is a fundamental restriction that the number of recordable images decreases accordingly, it is difficult 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 electronic cameras.

The present invention is based on the idea that the above two requirements can be met simultaneously if the special characteristics of television overturning signal formation can be utilized.

In other words, the vertical resolution of the television replacement signal is 1/? compared to the original image for each original image. The original image is divided into two sub-images that are the same as the original image except for the fact that High image quality is achieved by reproducing the resolution that existed in the past. Therefore, if an electronic camera is equipped with an operation button, and this operation button instructs high image quality, the original image is recorded as is, that is, one image on two sub-surfaces is recorded on two recording tracks, and the operation button is set to record a large number of images. When instructing to give priority to a small number of recording sheets, only one side of the sub-image is recorded on one recording track, so that the operator's request is satisfied each time.

In this case, the present invention particularly aims to simplify the mechanical system by arranging two recording heads adjacent to each other for tracing two adjacent tracks, and moving the recording heads in units of two tracks. When performing high-quality recording, two sub-images are recorded on each recording head. The next imaging recording is performed at a location moved by two tosics.

On the other hand, when recording is to be performed with the operation button set to the recording head, first the tenth sickle head is used to capture and record an image, and when further image recording is to be performed, a small amount of recording is performed on the remaining recording head. Since two tosic recordings have been made, for the next recording, the head is moved and image recording is performed on a new track.

With this head feed 9 method, if the operation button is changed from priority on the number of recorded sheets to high-quality recording, and the first recording head is used at that time, unrecorded tracks will occur. #1 It is considered that the changes are almost negligible compared to actual use.

As described above, since the head feeding control is performed every two tracks, the head feeding mechanism is simple, the cost is low, and at the same time, the recording density is substantially increased.

Simultaneously with the above recording operation, by encoding and recording the instruction of the operation button, the setting of the reproduction circuit is automatically performed at the time of reproduction.

An embodiment of the present invention will be described below with reference to the block diagram of FIG. In the figure, 1 is an imaging circuit such as a video camera, 2 is a recording circuit, 3, 10.13 is an electronic switch, 4
．． 4' and 5.5' are heads, 6 discs, 7 is a driving device that drives and rotates the disc 6, and 8 is a drive unit that drives and rotates the disc 6, and 8 integrates the head 4 and the head 4' to simultaneously drive two adjacent tracks on the disc 6. The head support part 8' supports the head 5 and the head 5' in exactly the same way as the head support part 8, and the head support part 9 supports the head support part 8 and the head support part 8'.
11 is a reproducing circuit; 12 is approximately 1 period of the horizontal synchronizing signal of the television broadcast signal;
A delay line having a delay time of /2, 14 is an output terminal, 15
16 is an operation button, 16 is a control circuit whose operation will be explained below, and 17 is an operation button.
1B is a counter for counting the number of captured images, and 1B is a playback image switching button for switching to the next recorded image during playback. FIG. 2 and FIG. 5 are conceptual diagrams for explaining the operation of the configuration shown in FIG. 1 during recording and reproduction, respectively.

An image signal captured by the image pickup circuit 1 by operating a button (not shown), etc. is transferred to the head 4 by the action of the recording circuit 2.
During playback, this recorded signal is transmitted from the disk 6 to the head 4'.

5' is reproduced by the reproduction circuit 11 and output from the terminal 14. However, since this operation itself is a normal magnetic recording and reproduction operation such as VTR recording, a detailed explanation will be provided. is omitted.

First, the recording operation will be explained using FIG.

Figure 2 (α) shows the state of the operation buttons, and the sub-screen l1ili1 and sub-screen 2, which constitute one screen as explained earlier, were recorded together to obtain high-quality recording. Turn on (0#), and turn off (OFF)
). In FIG. 2(A), the number of the recording track set in advance on the disc 6 is indicated by the symbol #, and one screen can be recorded. The actual recording tracks are arranged regularly on the circumference of the disk 60.

In the figure, this is shown in a schematic diagram arranged in order from left to right. (c) and (d) t (respectively, one image counter 1 recorded in the corresponding track number)
7 contents, showing the head used for recording. In the example shown in FIG. 2, the number of shots is 1, 2. ．． 5. ...Priority is given to high image quality, high image quality, number of recorded sheets, and so on, and the number of sheets per sheet counter corresponds to 1, n.

It has become a town...

When the number of sheets counter 17 is 1, that is, when the operation button 15 is set to the high image quality side (ON) during the first image recording, the first of the output signals of the two recording circuits and the imaging circuit 1 is The sub-image signal A is sent to track # of disk 6.
1, the second sub-image signal A! track f of disk 6
Record #2 as shown in Fig. 2(c) K. In this case, the control circuit 16 (according to the instruction of the operation button 15), the sub-image signal A
The switch 3 is switched as shown in FIG. 2 (-) so that the respective signals are connected to the heads 4 and 5 during the period in which the sub-image signals At, A! The instruction content of the operation button 15 is multiplexed as a code for each, and this is recorded on the disk 6. In this case,
Since both of the two sub-image signals are recorded on the disk 6, high-quality reproduction is possible as will be described later.

In the next imaging recording, when the operation button is set to the high image quality side, the number display counter displays "■" indicating the second imaging, and the head drive circuit 9 moves to the head support section 8 according to the output of the control circuit 16.
, and head 4.5 is moved by two tracks, each track $5. Contact with l. After that, the sub-image signal Bt is generated in the same way as when recording in Tora Sori $1 and $2.
, Ih to the track of disk 6 5. Record in #4. In the case of high-quality recording, the head 4.5 is moved two tracks at a time for recording. [As shown in Figure 2 (α), the operation button is turned off (OF7') for the third image recording, and if the number of recorded images is prioritized from the high image quality side, the head 4.5 is Among the tracks 05.1 and 6 of the plate 6 that are in contact with the head drive circuit, only the first image signal CI is sent to the track #5 of the disk 6 as shown in FIG. 2(C). to be recorded. In this case, the control circuit 16 is operated by the operation button 1.
5 is multiplexed as a code onto the sub-image signal Ct, and this is recorded on the disk 6. In this case, the only track used is track #5, so electronic switch 5
It is sufficient that the head is on the 4th side. Next, when recording images for the fourth time, if the operation button 15 is set to the number-of-recording priority side again and the operation button 15 is turned OFF as shown in FIG. $5. $6
K is in contact with head 4.5 and electronic switch 3.
is switched so that the output from the recording circuit is guided to the head 5. In this state, only the first sub-image signal 1h is recorded on track #6 on the disk as shown in FIG. 2(C).

At the same time, a sub-image signal C is generated using the instruction content of the operation button 15 as a code.
1 and recorded on disk 6. When image recording is to be performed next time, since both of the tracks that are in contact have been recorded, the head drive device f19 moves two tracks and moves to a new track.

When the operation button is OFF and the image is captured and recorded.

Recording is performed by switching the control switch 3 to the head 4 side, and recording the first sub-image signal E+ on track #7 in the same manner as when recording on track #5 or #6. If the operation button is on (ON), the sub-image signal Ex is sent to track 14B on the disk in the same way as the first and second imaging recordings.
, F2 will be recorded.

Now, at the time of the sixth recording shown in Fig. 2, the head is moved to a new track by the head drive device 9, and the sub-image signal is recorded for only one image by turning off the operation button. , when the operation button is turned ON to perform high-quality recording, the control circuit 9 moves the heads 4 and 5 by the head drive device 9 to move the heads 4 and 5 to a new track #9. Heads 4 and 5 are brought into contact with #+0 to record sub-image signals Fr and F2. In this case, track 8 becomes unrecorded.

By repeating the above operations.

It is clear that it is possible to give priority to the number of recording sheets or to record high-quality images on a disk.

Next, the reproduction operation will be explained using FIG.

FIG. 3(α) schematically shows the contents of the sheet number counter 17, and FIG. 3(A) shows the track number of the disk 6 corresponding thereto. In the illustrated example, this relationship is the same as that when recording the second section for ease of understanding. The contents of number counter 17! In this case, two sub-images AI and Ax are both recorded on tracks 1#1 and 1t2 on the disk 6. The control circuit 16 controls the head 4' in advance.
Alternatively, the instruction of the operation button 15 during recording multiplexed with the output signal of the head 5' can be decoded by turning off the electronic switch 10. Each sub-image A I detects that it has been done and switches the Naruko switch 10 to the television signal format.
, A2's heads 4', 5' are repeatedly switched and supplied to the reproduction circuit with each sub-image Ar, , 4t. In this case, since one original image in the television signal format is output from the reproduction circuit 14, the switch 15
If the terminal 14 and the playback circuit 11 are connected directly, the TV monitor (not shown) connected to the terminal 14
) provides high-quality paleogenetic images.

Next, when the reproduction image switching button 17 is pressed and the next image is to be reproduced, the control circuit 16 detects that the image before switching is of high quality, so the control circuit 16 The heads 4' and 5' attached to the head supporter 8' are moved by two tracks and brought into contact with the tracks [, l] on the disk 6, respectively.

At this time, the control circuit 16 detects that the output signal from the head 4' or 5' is a high quality recording signal, and performs the same operation as before.

Furthermore, when the next image is switched to ■ indicated by the number of sheets counter using the playback image switching button, the head drive device moves the head 4'.
, 5' contact tracks ##5##6 on the disk 6, respectively. In this case, since the III llila circuit 16 detects that the image is recorded from the head 4' or 5' with priority given to the number of recording sheets, and after the head has moved, the circuit switches the electronic switch 10 between the head 4' and the reproduction circuit 11. Switch to connect. This is because the outputs of the high-quality image pick heads 4' and 5' are not sub-images of the same image, so the electronic switch 10 is
This is to prevent two completely unrelated images from being duplicated and output from the output terminal 14 when the output terminal 14 is switched.

In this way, only the output of the same head 4' is output from the output terminal 14, as shown in FIG. 3(C). In this case, the control circuit 16 switches the Y-shaped switch 13 repeatedly in accordance with the reading cycle of the sub-image signal C1, and outputs the sub-image signal C1 to the terminal 14 as the output signal of the reproducing circuit 11.
is as it is or the sub-image signal C! It is preferable that the signal be delayed by approximately 1/2 the time of the horizontal synchronizing signal of the television signal by the delay line 12 and output as shown as CI' in FIG. 3(C). The reason for this is that the transmission period of each single-screen image is shifted by the time equal to the period of the horizontal synchronization signal in order to smoothly perform interlaced scanning of the two sub-screens in the television signal, whereas the Since the sub-image signal Ct is received from the plate 6 at the same period, this -1
, 1''V monitor, a so-called skew phenomenon occurs in which the upper part of the screen is distorted, which significantly impairs the quality of the reproduced image.

Next, when the reproduction image switching button 17 is pressed to reproduce the next image, the control circuit 16 switches the electronic switch 10 so that the head 5' reproduces the image. When the control circuit 16 detects a signal indicating that the operation button 15 is in a state where priority is given to the number of recording sheets, which is multiplexed on the output of the head 5', the control circuit 16 switches the solder switch 15 to read out the sub-image signal. Switching according to the cycle prevents the ski phenomenon on the monitor.

Furthermore, if you try to output the next image using the playback image switching button, two tracks of $5. Since #6 has already been reproduced and the electronic switch 10 is set to the spatula 125' side, the control circuit 16 causes the head drive device 9 to move the heads 4', 5'l by track p2. Thereafter, the control circuit 16 detects that recording was performed with the operation button in the OFF state, similar to the operation shown above, and switches the single-child switch 10 to the head 4'.
It is fixed to the side and performs the playback operation of track #7, etc., and outputs only the signal of the sub-side surface signal of one sheet.

Next, when the playback image switching button is operated again, the control circuit 16 fixes the electronic switch 10 to the head 5' side and moves the track reference 8
is played back, but it is detected that nothing is recorded on the same track. In that case, immediately
Move the heads 4' and 5' by 928222 minutes to track $9. The series of operations described above, such as searching for $10 and detecting the state of the operation button, is performed from the beginning.

By repeating the above operations, it is possible to generate 44 signals recorded on the disc 6.

In the above explanation, the code from the control circuit 16 that is multiplexed to each sub-screen signal and the multiplexing method were not explained. It is also possible to perform temporal multiplexing, such as inserting the signals in a predetermined position in the vertical blanking period or horizontal blanking period of the Television No. 48 format, in accordance with the order of the signals. The signals may be frequency-multiplexed within the disk, or may be spatially multiplexed on the disk 6 using heads (not shown) for codes other than the heads 4 and 5.

Furthermore, it is not always necessary to multiplex record the states of the operation buttons. In the present invention, two heads are moved as a set by two tracks each. Therefore, a high-quality track signal such as one screen composed of two sub-screen signals can be obtained by switching the electronic switch 10, and no flicker will occur. On the other hand, when the number of recording sheets is prioritized, flicker occurs because the two sub-screen signals are different. This difference is easy to detect, and this output can be used to control the on (OA') and off (OFF) states of the operating switch during regeneration. .

Further, in the above explanation, the number of images actually captured was used as an instruction for the number counter 17, but it is clear from the explanation of the operation that the display contents of the number counter 17 do not directly play an important role. be. In operating an electronic camera, it is preferable that the number counter 17 counts the number of unrecorded tracks or the number of poorly recorded tracks on the disc 6. In that case, the number of sheets counter 1
The count of 7 is incremented by 2 in high image quality, and by 1 if priority is given to the number of recording sheets, depending on the instruction content of the operation button 15.

Furthermore, in the above embodiment, when the recording track of only one sub-screen is busy, the first and second sub-screen signals are recorded. They may be mixed, and there is no essential correspondence between the head and the sub-image signal.

Further, in this embodiment, an unrecorded track is generated and left unrecorded, but if priority is given to the number of recording sheets, recording may be performed on the unrecorded track again.

In addition to the code of the operation button 15, the number of sheets counter 170
The count number is also recorded at the same time, and the control circuit 1 is
6 may be used to detect the count recorded on the storage rack and output an arbitrary captured image.

Furthermore, since the essence of the present invention relates to a method of recording and reproducing image signals recorded on the disk 6, the recording method of this recording disk may be magnetic, optical, or other methods.
Furthermore, the imaging method may not be a video camera (it may be a TV signal format such as a VTR or a similar signal format).

Further, in this embodiment, when the recording mode is changed from priority on the number of recorded sheets to high image quality and recording is performed using the head 4, unrecorded tracks are generated. However, in reality, such switching of recording modes is not performed frequently, and when recording is performed in mode 4, the frequency is even lower, so there is no problem.

In order to eliminate this unrecorded portion while continuously capturing and recording images, the head must be controlled in one to two feeds. This requires a small head feed control and a highly accurate, highly reliable head drive device, which increases costs. Therefore, although there is a possibility that some unrecorded tracks may remain, this method is advantageous because it aims to reduce costs and increase reliability.

During actual use, for example, if you want to record only an even number of times with priority given to the number of recordings, or if the remaining capacity is displayed and the display is an even number, switch the operation button to high-quality recording. If there are no unrecorded tracks, there will be no unrecorded tracks at all. Considering this, the present system is not inferior in track use performance to the system that controls each truck one by one.

As explained in detail above, according to the present invention, by operating the operation button, it is possible to record and reproduce high-quality images using a single disc, although the number of recorded images is limited, or Although the image quality will be slightly lower, the number of recorded images can be twice as many as the former, or the recording method can be changed automatically during playback, instead of just selecting one of the functions each time depending on the operation scene. The effect is great, such as being able to distinguish between the two and obtain a good screen.

In addition, since the head support section arranged so as to trace the two heads to adjacent tracks is always moved by two steps each, the head feeding device is simple and costs are reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a recording/reproducing apparatus according to the present invention, and FIGS. 2 and 3 are conceptual diagrams for explaining the recording and reproducing operations of the configuration shown in FIG. 1, respectively. 1; Imaging circuit; 2; Recording circuit. 6; Disc; 7: Drive device. 91 head drive device, 11; regeneration circuit, 12; delay line,
15; Operation button. 16: Control circuit, 18; Playback image switching button. No. 3 '$3 figure

Claims (1)

[Claims] 1. A recording/reproducing device having a disc for recording a television signal, comprising a head assembly having two heads arranged so as to trace adjacent tracks, the head assembly When the head is moved two tracks at a time to record both of the two sub-picture signals that make up the image signal of the television signal. a first recording means for recording using the two heads;
When recording only one side of the sub image signal, a second recording means for recording using one of the two heads, and a second recording means for recording by using one of the two heads, and a second recording means for recording by using one of the two heads, and a second recording means for recording by using the first means and the second recording means according to a command from an operation button. A recording/reproducing device characterized in that either one of the means is selected. 2. If one of the tracks being traced by the two heads is to be recorded in the second recording session using the first recording means, the head assembly After that, recording is performed using the first recording means, and when recording is to be performed using the second recording means, recording is performed by the other head relative to the one head, and the two recording means are used for recording. If both tracks being traced by the head have already been recorded by the first means or the second means, the recording by the first means or the second means will cause the head to move υ. 2. The recording/reproducing apparatus according to claim 1, wherein the recording/reproducing apparatus is configured to perform the recording/reproducing apparatus after the recording/reproducing operation is performed.