JPS61154390A - Solid-state image pick-up device - Google Patents

Abstract

PURPOSE:To obtain a desired image signal by disposing plural solid-state image pick-up devices, selecting one of them, for instance, and driving it by one driving means. CONSTITUTION:In CCD 121-123, image pick up lenses 131-133 are disposed correspondingly. The respective CCD is connected to a change-over switch 14. The switch 14 is constituted by an image switch 141 and a driving switch 142 and connected to output terminals and driving terminals of three CCDs. An output of the switch 14 is connected to a color separating circuit 15 to separate three color signals and processed for the signals in a signal processing circuit 16. This output is applied to a color encoder 17 to have a standard color signal and an NTSC signal. Based upon a signal generated from an oscillator 18, various types of wave shapes required for a CCD color camera are formed in a pulse generator 19 and a driving wave shape required for a driving circuit 20 is formed.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a solid-state imaging device using a plurality of solid-state imaging devices. The solid-state imaging device was provided on the side of the camera, and the signal of the subject obtained from the solid-state imaging device was output.

Therefore, when you want to take images from different directions, or when you want to switch between indoor and outdoor scenery, use multiple solid-state imaging devices and switch the video signals (usually NTSC signals) obtained from those imaging devices. A method was adopted in which the images were switched and displayed on a color receiver.

Currently, solid-state imaging devices made using solid-state imaging devices such as CCDs have become considerably smaller and lighter in both size and weight, but they still weigh about 1 to 30 pounds, making it difficult to use multiple solid-state imaging devices. It was difficult to install a large number of cameras, and due to the limited space available, it was difficult to switch between different scenes for observation.

Furthermore, when switching images from multiple solid-state imaging devices and displaying them on a receiver, if the horizontal and screen synchronization pulses are not completely synchronized, the screen may turn over or the synchronization may be disrupted. The drawback is that the scene you want to observe is displayed instantly, making it difficult to view.

Furthermore, in order to synchronize the signals, it is difficult to synchronize signals using a normal camera, and a special imaging device capable of external synchronization must be used, making the overall configuration expensive and difficult to implement.

[Purpose of the invention]

The present invention has been made in view of the above points, and an object of the present invention is to provide a solid-state imaging device that uses a plurality of solid-state imaging devices and can obtain a signal by switching a signal of a desired scene.

Kami 1t11 A desired Eiken signal is obtained by selecting the middle or lower part and driving it with one driving means.

[Embodiments of the invention]

The present invention will be described below with reference to the drawings.

FIG. 1 shows a solid-state imaging device used in the present invention, for example, a CCDC.
This figure shows the configuration of an embodiment of a C color camera.

This CCD color camera has three solid-state imaging devices, such as COD (121), (122), and (123), and each CCD has an imaging lens (131), (132).
.

(133) are provided correspondingly, and each COD arranged so that its optical image is a KM image on the photosensitive surface of the COD is connected to a changeover switch α4. Changeover switch (1
The outputs of the 41% video switch (141) and the drive switch video switch (141) are connected to the next color separation circuit, where the three color signals necessary for the color camera are separated and sent to the next signal processing circuit. Signal processing such as gamma correction, white clip, clamp, and matrix is performed in tL◇
This output is applied to the next color encoder αη, resulting in a standard color signal, NT8C signal. On the other hand, 14.
Based on the signal generated by the 3Fv [Hz oscillator α&, the next pulse generator 9 forms various pulse waveforms necessary for the CCD color camera, and the next drive circuit (A) generates C0D.
33, the necessary drive waveform is formed. The output of this circuit is applied to the aforementioned drive switch (142) K to obtain the desired c
Connected to the drive terminal of cDH. In addition, the pulse generator αl
The output is applied to the signal processing circuit (e) and the color encoder (lη) as necessary. Depending on the color separation method, the output is also applied to the color separation circuit (1).

2 is a view of the solid-state imaging device (11) shown in FIG. 1 installed in an automobile, viewed from directly above.The operation thereof will be explained next. The first imaging lens (131) and the CCD (
For example, the second imaging lens (132) and the C0D (122) are installed on the right side of the car, facing forward, and the third imaging lens (133) is installed on the right side of the car, facing forward. The CCD (123) is installed at the rear of the vehicle. In this way, images captured from the left front, right front, and center rear can be viewed on the monitor (not shown) inside the vehicle by operating the changeover switch a from the driver's or passenger seat. . These three locations can be installed on the ceiling of the car as shown in Figure 2, and since the COD is usually within 10118 x 10gm+, the imaging lens can also be of a size of 10φ to blade diameter. , it can be installed without being affected by the appearance or style.

Also, the color separation circuit and drive circuit (A) correspond to the part called CC's (camera control 2 bits) of a color camera, so they can be housed in one box and operated. If this is done, it can be realized relatively inexpensively by providing three or more camera heads.

It should be noted that this device does not require a special distinction between color discs and black and white discs, and if a CCD with a one-color filter is available, it will be possible to produce color discs. Further, the number of imaging devices is not limited to three, and two, three or more imaging devices can be freely installed. Furthermore, although it has been described that only the 1/CCCD is separately provided, nine components including a part of the drive circuit or a part of the signal circuit may be provided as an imaging device in this CCD.

Furthermore, although it has been explained that one of multiple imaging devices is selected and the signal is read out, it is also possible to read out signals from two or all imaging devices at the same time, process them, and monitor them. Good too.

〔Effect of the invention〕

This solid-state imaging device is characterized by using a solid-state imaging device such as a CCD as an imaging device. In other words, it was impossible to create such an imaging device because an image pickup tube has a heater and cannot obtain an image instantly, but with a solid-state imaging device, it is possible to obtain an output signal simply by applying a pulse. Therefore, a clear image can be obtained simply by switching and operating one predetermined drive waveform.

Signal processing pulse generation circuit for synchronization pulses etc. (obtained from 11) If this signal is always sent to the monitor, there will be no synchronization disturbance due to operation by the switching circuit, the image will not turn over, etc., and it will be easy to see. Clear images can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the solid-state imaging device of the present invention, and FIG. 2 is a block diagram of the present invention when applied to an automobile. (14)---(fllssus4do121),(+22),Q2J),---C(,D
(131), (+32), (+33) --- Kazusho 13 is also Ren, a permanent patent attorney, Kensuke Norichika (one idiot) Figure 1, 2C! ! l

Claims (1)

[Claims] A plurality of solid-state imaging devices each including a solid-state imaging device and an imaging lens that forms an optical image on a photosensitive surface of the solid-state imaging device; and a plurality of solid-state imaging devices that read out and process object signals by driving the solid-state imaging devices. 1. A solid-state imaging device characterized by being provided with a camera control unit for controlling the camera.