JPS62247683A - Double-speed image pickup device - Google Patents

Abstract

PURPOSE:To omit a wide band even with the double-speed image pickup by reading the optical charge stored at every 1/n of the standard charge store time of an image pickup part to plural signal transmission lines and recording those optical charges on the magnetic tapes independently of each other. CONSTITUTION:The electric charge is alternately read out to the 1st vertical CCD51 and the 2nd vertical CCD52 from a photodiode 6 at every 1/120sec by the timing of time points t1 and t2 respectively. The electric charges read out to both CCD51 and 52 are transferred vertically by the pulse of each hour and then transferred horizontally by horizontal CCD71 and 72 to be extracted as output signals (c) and (d) respectively. These signals (c) and (d) are applied to a camera circuit and a VTR recording circuit 9 as independent video signals. The video signals corresponding to the signal (c) are supplied to magnetic heads 11a1 and 11a2; while the video signals corresponding to the signal (d) are supplied to magnetic heads 11b1 and 11b2 respectively. These video signals are recorded on the magnetic tapes independently of each other.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a double-speed RF111i image device, and is directed to an apparatus capable of performing double-speed image transport with a simple circuit using a helical scan type VTR.

Conventional technology For example, in the NTSC system video signal, one field is (1/
60) seconds, it is impossible to record images of spinning faster than <1/30) seconds. Therefore, N T
No matter how irregularly a magnetic tape on which SC video signals are recorded is played, it is impossible to faithfully reproduce images that move faster than 1/30 of a second during recording, resulting in afterimages,
There is a problem in that the movement becomes step-like, and it is impossible to obtain a satisfactory irregular playback (step playback) effect.

On the other hand, 4ft, speed positive images are recorded with a larger number of frames than the standard number of frames per field (1/80) seconds during recording, and are re-assigned with the standard number of frames during playback to create slow-motion images. 1 regeneration effect! Therefore, problems such as the above-mentioned afterimage are less likely to occur.

FIG. 4 shows a 7rJ book system diagram of an example of a conventional double-speed illumination device. In the same figure, the output jJ of the camera section 1 is set to a frame rate of about 3.3 (200 fields/second), for example, the normal frame rate (60 fields/second), and this output is sent to the VTR recording circuit. 2 and the magnetic heads 3a and 3b of the rotating drum 3. In this case, the rotation of the rotating drum 3 is about 33 times (100 rotations/second) compared to the usual (30 rotations/second).
seconds), and the running speed of the magnetic tape was also normal (3,3Cr
R/sec) of approximately 3.3 (8 of (10 crR/sec)).

The recording pattern of the magnetic i-wave recorded in this manner is the same as the recording pattern of the normal standard.

During playback, the rotation of the rotating drum 3 is set to the normal rotation (30 rotations/second).
and the running speed of the magnetic tape was set to 3.3 az seconds).
, approximately (1/3.3)
1 can be done.

Problems to be Solved by the Invention In the above-mentioned conventional system, the number of revolutions of the rotary drum 3 must be several times (for example, 3,3 times) the normal number of revolutions during recording, so the number of recording frames cannot be increased. In proportion to the increase in the number of signals, the signal band is required to be several times (3.3 times) the normal one, and in addition to this, J, S,
(Y) Broadband processing and recording equipment was required, which was a problem that could not be achieved with a simple circuit.

SUMMARY OF THE INVENTION An object of the present invention is to provide a double-speed imaging device that does not require a particularly wide band when performing double-speed I8 imaging and can be configured with a simple circuit.

Means for Solving the Problems In Fig. 1, the image storage unit 1 is a two-dimensional fixed device that carries multiple (n) signals and Buddha transmission paths for one photoelectric conversion unit F. In the image carrier, 1 / of the standard ゛'fXi load accumulation time
The photocharges accumulated in n ftj are converted into multiple (n) signals I
I, independent readout 1J means, camera circuit and VT in the feed path
The number (“1”) read out from the reading means by the magnetic head of the RTR recording circuit 9
) are embodiments of a means for independently recording video signals corresponding to photoelectric charges on a magnetic tape. .

Standard charge accumulation time (for example (1/60)
The 6 beams of light transmitted every 1/n ((1/120 > seconds) of 1/n seconds) are independently read out to multiple signal transmission paths, and sent to a magnetic head installed on a rotating drum rotating at a standard rotation speed. Since the video signals corresponding to the plurality of photocharges n read out from the readout means are each independently recorded on the magnetic tape, the recording signal band is rarely widened, and wideband signal processing and wideband signal recording are performed. There's no need.

Embodiment FIG. 1 shows a schematic diagram of an embodiment of the apparatus of the present invention. In the figure, 4 is the 11th part of the incline CCD (two-dimensional solid-state dancing image element), and the first! ! ! Direct CCD5+ and second vertical C
A CD52 is provided vertically with the photodiode 6 in between, while a first horizontal C0D7+ and a second horizontal C0D7+
CD7z is installed horizontally. Note that 8 is a channel stopper that separates the first vertical C0D51 and the second vertical C0D52.

Reference numeral 9 denotes a camera circuit and a V T I'<recording circuit, which supplies the output of the image section 4 to the rotating drum 10 as a video signal.

The rotating drum 10 has magnetic heads 11a+ arranged at intervals of 90 parts.
, 11b+, l1az. 11bz is provided and J
3, magnetic heads 11a+. 1
The magnetic head 11b+ 1a2 has an azimuth of +α° and is located 180° opposite to the other magnetic head 11b+.

11b2 has an -α° azimuth. The first vertical CCD drive pulse a (FIG. 2 (Δ)) that entered the terminal 12+ is supplied to the first vertical CGD 3+, while the second vertical COD drive pulse b that entered the terminal 122 (FIG. 2 (B)) is supplied to the first vertical CCD 3+. )) is the second
It is supplied to the vertical CCD 52. The drive pulses a, b are a transfer pulse whose L level and M level are repeated in 111 cycles, and an H level read pulse Pr'+. which is repeated every (1/60) second. Pr2 consists of a read pulse Pr+ of drive pulse a and a read pulse Prz of drive pulse b.
means a phase difference of (1/120) seconds. , J3,
In the case of two-phase driving, in addition to the signals a and b, there is only the above-mentioned transfer pulse, and the vertical CCDs 5+ and 52 are transferred and driven by this transfer pulse. In this case, horizontal swing 4
- stage is driven one stage at a time.

At the timing of time t1, the read pulse Pr+ is set to J:
1st vertical CCD5+ all at once from riff A1-diode 6
While the charges are transferred to the second vertical CCD 52 from the photodiode 6 at the timing of "S" t2, the charges are transferred all at once from the photodiode 6 to the second vertical CCD 52 by the readout pulse Prz at the timing of "S" t2, and also by the pulse Pr+.

Charges are transferred to C0D51.52 one stage at a time by pulses other than Prz. That is, the charges in the aluminum die are read out to the first vertical CCD 5+ and the second vertical CCCD 52 every (1/120) seconds. In Fig. 1, from A to D, vertical CCD 5+, C
The drawn arrows (←, →) indicate time 1. ．． From photodiode 6, which is performed at the timing of 12! r) Direct CCD5
In this case, since the charge accumulation time of the A to D A draw can be 1/2 that of the conventional one, the 'R simple transfer capacitance to the vertical CCD 1 E can be 172 of the conventional one. Therefore, even if the number of vertical CODs is doubled, the vertical C
The total area of OD will not double.

The charges read out to the first vertical CCD 5+ and the second vertical CCD 52 are vertically transferred by pulses every 1H, and then horizontally transferred by the horizontal CCOs 7+ and 72 to output signals C□r31 (Figure (C)) and Output signal d ((D) in the same figure)
is extracted as In this case, the signal part ■ of signals c and d,
■, ■, ■, ■, ... are time-shifted by (1/120) seconds, but the field period is normal (
1/60) second.

Signals c and d are independently used as video signals in the camera circuit and VTR recording circuit 9, and the video signal A corresponding to signal C is sent to magnetic heads 11F1+ and 11az, and the video signal corresponding to signal 2Jd is sent to magnetic heads 11F1+ and 11az. Head 11b+.

11b2 and recorded on the magnetic tape.

Here, the running speed of the magnetic tape 1) α is the normal (3,3c
m/s) to 248 (6, Gcta/s),
When the rotation of the rotary drum 10 is set to the normal rotation (30 [p1 rotation/second)] and the inclination angle of the magnetic tape is set at a predetermined angle from the normal one, the recording pattern of the magnetic tape becomes normal as shown in FIG. The recording pattern is exactly the same as that of . At this time, the rotary driver 1110 has four magnetic heads 1iar spaced apart by 90 degrees.

Since the magnetic heads 11b+, 11az, and 11b2 are provided, the two systems of video signals having a phase difference (1/120 > seconds) are generated by these four magnetic heads 11a+, 111.)+.
.

11az and 11b2, recording is performed using a normal recording pattern.

In this case, since the rotating drum 10 rotates at the usual speed of 30 revolutions per second, the recording signal band does not become wide-band, and there is no need to perform wide-band signal processing as in the conventional apparatus shown in FIG.

The magnetic tape recorded in this way is used as a normal V T
When a normal magnetic tape is played back using R at the running speed (3.3 AZ seconds) and the normal rotation of the rotating drum (30 revolutions/second), slow motion playback of (1/2)(, 'i' is performed. Note that a normal VTR is a VTR that has two magnetic heads, ``α° azimuth and -α° azimuth.

Note that standard mode recording and playback is also possible by auto-tracking using a piezoelectric element and changing the relative inclination angle between the rotating drum and the magnetic i-beam.

Effects of the Invention According to the device of the present invention, since the rotating drum only needs to rotate at a normal rotation speed, there is no need to widen the recording signal band (L), and there is no need to perform wide band signal processing as in conventional devices. It can be configured with a circuit, and has features such as being able to obtain a 1-motion image with natural movement as a reproduced image.

[Brief explanation of drawings]

1 and 2 are respectively a schematic configuration diagram and a signal waveform diagram of an embodiment of the apparatus of the present invention, and FIG.
FIG. 4 is a block system diagram of an example of a conventional device. 4... Dance image part, 51... First vertical CCD, 52...
・Second! [Direct COD, 6...Photodiode, 7I
...First horizontal CG0.72...Second horizontal COD, 9
...Camera circuit and VTR recording circuit, 10...Circuit drum, 11a+, 11az, 11b+, 11b2
-16 head, 121.122...CCl) drive pulse input terminal.

Claims (1)

[Claims] A two-dimensional fixed image sensor having a plurality (n) of signal transmission paths for one photoelectric conversion unit transmits the photocharges accumulated every 1/n of the standard charge accumulation time to the plurality (n) of signal transmission paths. video signals corresponding to the plurality (n) of photocharges read from the readout means by at least n magnetic heads provided on a rotary drum rotating at a standard rotation speed; What is claimed is: 1. A double-speed imaging device comprising means for independently recording on a magnetic tape.