JPS61117994A - Stereo television camera device - Google Patents

Abstract

PURPOSE:To obtain a device whose sensitivity is improved with the use of a solid-state image pickup element by setting the accumulating time of a video signal charge longer than the time corresponding to tone conventional field. CONSTITUTION:Whenever a signal charge read frame shift pulse 3 is given, a charge-coupled CCD 1 transfers charges of video signals accumulated in one previous frame time of a transfer area, and reads out the charges of the transferred video signals in one subsequent field time by two picture elements. During the reading, charges of video signals corresponding to a new optical image are built in an accumulating area and further built one subsequent field time, which means that charges are accumulated in the totaling one frame. A CCD 1' operates in the same manner, which will not affect adversely a video because shift pulses 3 and 3' have a time dela by one field.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] Does the present invention include two solid-state image sensors? The present invention relates to a stereoscopic television camera device for use.

[Technical background of the invention]

w43I! l! A general 3D television camera device using a solid-state image sensor and its sequence diagram? The stereoscopic television camera device shown in 06 has an image sensor 8.8't' driven by a solid-state camera element drive device, and the original beam enters each image sensor through a lens 9.9'. The video signal obtained by converting the signal into an electrical signal is output alternately through the field switching (b) wr of the video stage 10. After this video signal is amplified by an output amplifier 11, it is input to a video monitor 12 and the video is reproduced. 13 with a glasses drive device with a shutter function, the video vR1! From the issue! ! ! Separate the direct synchronization signal and, based on this synchronization signal, transmit the viewing window 15.15' of the shutter acid-enabled glasses 14? Change alternately for each field. As a result, for example, when an image obtained from the solid-state image pickup device 8 is displayed on the video monitor 12, the transmittance of the viewing window 15 of the glasses 14 with a shutter function improves, and the viewing window 15' becomes visible. On the other hand, when an image obtained from the solid-state image pickup device 8' is being displayed, the transmittance of the visual field window 15' increases, and the visual field window 15a is blocked, resulting in a true state. Therefore, glasses with a shutter function 14
If you step back and observe the image on the video monitor 12, you can recognize the image of a standing tree obtained from the stereoscopic television camera 6. Figure 4 shows the field accumulation shade of a conventional stereoscopic television camera 9 device 1c# solid-state image sensor.
In the field accumulation mode, for each field, the video signal charges of two pixels 16 that are in contact with iIl in the vertical direction with respect to the moving direction of the solid-state image sensing devices 8 and 8' are added and output. As described above, when reading in units of 21ii elements, the light receiving area becomes twice as large, and the light becomes Mllj. This is a well-known technique ◎Here, the standard W-shaped tray of the frame TV is 2:1.
Is this an example of a case where an immelace is performed, or as a standing tree statue? In order to make the process 5 possible, the image bias code from one of the two solid-state image sensors 8 and 8' is output in the odd field, and even #! In the L field, α Image 11 from the other solid-state image sensor 8'! The number is output. Specifically, each time the signal charge readout field shift pulse 17.17' shown in FIG. During this period, charges corresponding to the image are accumulated in the photosensitive section during the period of time during which two images are read out within the time of one field. or is done.

[Problems with background technology]

Until now, photo tubes have been used as a means of standardizing images in stereoscopic television cameras, but they have also been used in industry.

For example, can it be used as eyes for industrial robots? When considering this, it is desirable for the photographer R to be as small and lightweight as possible, and to consume as little power as possible. recent years.

Solid-state imaging devices such as charge-coupled devices (CCU) have come into practical use, and in addition to satisfying the above condition t-
It has great advantages as a 3D TV camera device, as it does not require the use of a 3D camera.
The sensitivity of solid-state imaging devices is still not as good as that of high-sensitivity steel imaging tubes, and some problems remain, such as the need to provide external lighting in places where there is insufficient illumination.

[Purpose of the invention]

The purpose of the present invention is to use a solid-state sensor and its sensitivity? An object of the present invention is to provide an elevated stereoscopic television camera device.

[Summary of the invention]

In general, since two solid-state cameras are used in a television camera device, it is not necessary to output 100 images per field from each image sensor, but it is output every field. According to the present invention, from this viewpoint, the accumulation time of the video decoding IIE load can be adjusted to correspond to one field in the conventional method, thereby achieving the above object.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. ◇The configuration of the stereoscopic television camera device according to the present invention is similar to the configuration of the general example shown in FIG. 3, and will be explained again in this paper using No. 31. In Fig. 3, 7 solid-state IJ images are captured using a 6-g stereoscopic television camera device. Kiko Driven by People & IC 2
It has two solid-state image sensors 8, 8'&: 9.9' lens 1itu and the light is incident on the solid-state image sensors 8, 8'. Field switching of the old issue 'klO of the video 1 obtained by passing f to the electricity 1g (alternately output through the g circuit?〇This video i!
o1, which is amplified by the output amplifier 11 and then input to the video monitor 12 and reproduced.
3 to 7 The eyeglass driving device with function detects the vertical synchronization signal r minute from Ei No. 115, and based on this synchronization No. 16, alternately for each field transmitted through the viewing window 15 and 15' of the glasses with shutter function 14. 0 to 19 For example, when the video monitor 12 is displaying the obtained video, the transparent 31 of the viewing window 15 of the glasses 14 with the μ adjustment function! i rate or 艮(nari)

In the view window 15', there is a picture of FLL, and on the other hand, F4-
Obtained from Takako Kumama 8', when the video corps is displayed, the transmittance of the hidden view window 15' is low, and if the view window 15 is disconnected, it becomes a continuous hidden station. @Fuyaku Glasses 14 Kaoru f
In this section, an example in which a coupled loading device (COD) is used as a solid-state image sensor will be described. FIG. 1 μ is a diagram of the field accumulation mode according to the embodiment. le i'a2 C0 in the diagram
D=i, 2,2'r! Does it mean that the image only needs to be output to CCDI, l', which shows the pixels of each &CCD 1.1', once within the time of the number kl frame? C, the charge +1 to always obtain an odd field video signal on the CCD1. C
On CD1', the even field signal is always 1! I:%
・Specifically, each frame, signal charge readout 7 frames, 7 pulses 3 is given, C0DIμ is accumulated within the time of one frame before it and outputs 7 alternately. The image is transferred to the transfer area of the image @I'iN, and the charge of the image gI cape r is transferred to the next 1
During this time, the charge of the video signal corresponding to the light field is accumulated in the accumulation area at a rate of about 2 pixels within the field time, and the charge of the video signal corresponding to the light field is further accumulated over the i-field time. In other words, the time of one accounting frame is accumulated.・CCD 1' is also subjected to signal charge readout frame shift pulse 3' or 4, and the same operation is performed. However, since there is a time difference of about one field for signal charge readout of the 7 frame shift pulses 3.3', there is no problem with the image. As mentioned above, also called CCDI and l'.

Since the charge of the video signal is accumulated within the time of a single frame, the area of the photosensitive area does not change compared to conventional ones, and a stereoscopic television camera can be placed between the two. The storage of video signals can be increased approximately twice as much as the other features of the present invention. The device configuration is similar to the general column shown in Figure 3.
! As shown in Fig. 4, a signal charge readout frame shift pulse 5 is applied to the solid-state camera sensor 4, and a bias t is applied so that no charge is accumulated in the photosensitive section that transfers the charge of the video signal to the transfer section.@This bias 'a' Apply this bias within 0.5 field time and then apply this bias within 1.5 field time? G! i charge readout 7 frame shift pulse 5
When the charge of the video signal accumulated within the time of 1.5 fields is given, the charge of the video signal is transferred to the transfer section and the charge of the video signal is transferred within the time of 1 field missing.
It is read out at the pixel rate. During this time, the amount of liquid is not accumulated in the μ photosensitive area within the first 0.5 field time, and the remaining 0.5 fields are not accumulated.
．． Accumulation of t loads is performed within a total of 1.5 fields υ time of 5 fields and the following 1 field. This is as described above. The solid-state sensor 1 element 4' also performs the same operation when the signal charge readout frame shift pulse 5' is applied, or the signal charge readout frame shift pulse 5.5'
Since there is a time difference of 17 (-/'), it is difficult to think about it.As mentioned above, the solid-state sensor 4.4
'Can we improve the sensitivity of a stereoscopic television camera system without changing the area of the photosensitive part? It can be increased approximately 1.5 times. Also, in place of the output amplifier 11 in Figure 3,
An output amplifier is provided between the solid-state image sensors 8, 8' and the field switching circuit 10, respectively. It is also possible to provide an output amplifier in addition to these output amplifiers.

143 and configuring the solid-state sensor element driving device 7 to drive at the timing shown in FIG. 1 will not pose any problems for those skilled in the art. The same applies to the case of driving at the timing shown in FIG.

[Effects of the Invention] According to the present invention, when the area of the photosensitive portion of each solid-state image sensor is constant, the accumulation time of the video signal accumulation <K
The time period corresponding to one field of rice was also lengthened, and with the same amount of incident light, a higher level of imaging [1 m
It is possible to obtain a charge of No. 1. Therefore, S
Even in places where lighting equipment is required due to insufficient illuminance, it is sufficient even if the lighting equipment is not installed or even on a small scale. Field storage mode readout timing diagram using a stereoscopic television camera device using a CCDt' as a solid-state imaging device, No. 21*r! , as another embodiment of the present invention, a field accumulation mode signal readout timing diagram for a three-dimensional television camera that accumulates and alternately outputs the electric charge Y 1.5 in a field time, 3rd mr! ,
Block diagram of a general stereoscopic television camera device using a solid-state camera device and its usage method, No. 46 mt! , is a timing diagram for reading field accumulation mode signals in a conventional stereoscopic television camera device.

it l'...CCD (charge coupled device).

2.2 ...-+ii element, 3# 3' proboscis/causal/signal charge readout frame shift pulse, 4t 4'...
・Solid-state image sensor, 5,5'...Signal electric m! 1! h output 7 frameset 7 pulses, 6...0, stereoscopic television camera device, 7, meeting 9, solid-state camera 1 element drive device, 8.8' ・
...solid-state image sensor, 9.9'-...lens, 10.
--・Field switching circuit, 11...φ output amplifier,
12...Video monitor, 13...Glasses drive device with shutter function, 14"...Glasses with fist 7 function I 15915'...@11 Viewing window.

Claims (1)

[Claims] Two solid-state image sensors are installed at a fixed interval in the same direction as the scanning direction of the solid-state image sensors, and video signals from the two solid-state image sensors are alternately switched for each field and displayed on a video monitor. A three-dimensional television camera device for outputting a three-dimensional image, characterized in that it is provided with means for driving the two solid-state image sensors at a timing such that the charge accumulation time for obtaining the video signal exceeds the time of one field. TV camera equipment.