JPS63200736A - Image pickup apparatus for endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to an endoscope imaging device capable of using both a field sequential type 11 image means and a color mosaic type image conveyance means. .

[Problems to be solved by conventional techniques and inventions] In recent years,
An endoscope (endoscope) that allows you to observe internal organs, etc. in a body cavity by inserting an elongated insertion part into a body cavity, and perform various therapeutic procedures as necessary using a treatment instrument inserted into a treatment instrument channel.
Also called scope or fiber scope. ) is widely used.

Furthermore, various electronic scopes using solid-state imaging devices such as charge-coupled devices (CODs) as imaging means have been proposed. This electronic scope has advantages such as higher resolution than a fiber scope, easier recording and reproduction of images, and easier image processing such as enlarging images and comparing two images.

The color image transport method of the electronic scope involves sequentially switching the illumination light to R (red), G (green), B (blue), etc., as shown in, for example, Japanese Patent Laid-Open No. 61-82731. For example, as shown in Japanese Patent Application Laid-Open No. 60-76888, there is a filter array in which color filters that transmit each color light such as R, G, and B are arranged in a mosaic shape on the front surface of a solid-state image sensor. There is a color mosaic type (also called simultaneous type) that has a color mosaic type. The field sequential method has the advantage that the number of pixels can be reduced compared to the color mosaic method, while the color mosaic method has the advantage of not causing color shift.

Further, the electronic scopes are diversified depending on their purpose of use. For example, for upper or lower gastrointestinal use,
The outer diameter of the insertion portion is approximately 10φI.

On the other hand, for example, for use in the bronchus, an outer diameter of around 5φ■ or less is usually required. As described above, it is physically and performance-wise impossible to use the same type of image pickup element and the same type of image pickup method for various electronic scopes whose insertion portions have a wide range of outer diameters. That is, for example, in order to realize a bronchial (small diameter) electronic scope, it is necessary to use an image sensor with a small number of pixels.

In this case, when the number of pixels is small, in order to prevent a decrease in resolution, R, G is used rather than a color mosaic type imaging method using a color mosaic filter.

A field-sequential color mm system is advantageous, in which light of each wavelength of B is illuminated in a field-sequential manner, images are taken sequentially under the illumination, and these images are combined and displayed in color.

On the other hand, for those with an outer diameter of around 10φ, it is advantageous to increase the number of pixels and use a color mosaic imaging method to improve image quality.

Incidentally, the fiber scope or electronic scope is generally used by being connected to a light source device that supplies illumination light suitable for each scope and a video processor that processes video signals.

The fiber scope, the field-sequential type electronic scope, and the color mosaic type electronic scope have different illumination methods and signal processing. However, conventional video processors have been compatible with either the frame sequential method or the color mosaic method.

Therefore, the user has to prepare different video processors and perform different operations depending on the type of scope, which is not economical or efficient.

Furthermore, in the frame sequential method and the color mosaic method, some signal processing may be performed in an intermittent manner, but in the past, video processors were completely independent in the re-imaging method, so it was not possible to share some parts. If this was not possible and a re-imaging video processor was prepared, the cost would increase and the device would become larger.

Furthermore, Japanese Patent Application Laid-open No. 60-243625 discloses that a fiber scope equipped with an optical fiber bundle for image transmission is connected to a control device of a field-sequential type electronic scope, and observation is made on a display screen such as a monitor television. A connection system is disclosed. However, this system does not allow the use of scopes with color mosaic @image means.

[Object of the Invention] The present invention has been made in view of the above circumstances, and can use both a frame-sequential type imaging means and a color mosaic type imaging means, and also reduces costs and simplifies the configuration. The purpose of the present invention is to provide an imaging device for an endoscope that makes it possible to

[Means and effects for solving the problems] The present invention provides a signal processing means for processing signals for a scope equipped with a frame-sequential color imaging means, and a signal processing means for processing a signal for a scope equipped with a color mosaic type color imaging means. A signal processing means for performing processing, a part of the circuit of both the signal processing means is shared, it is possible to use both a frame sequential type imaging means and a color mosaic type imaging means, and a circuit. It is designed so that a part of it can be shared.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

FIGS. 1 to 8 relate to the first embodiment of the present invention.
The figure is a block diagram showing the configuration of the output circuit inside the imaging device main body, FIG. 2(a) is a block diagram showing the configuration of the imaging device main body, and FIG. An explanatory diagram, Fig. 3 is an explanatory diagram showing the configuration of a fiberscope with a camera for the field sequential type external attachment, Fig. 4 is an explanatory diagram showing the configuration of a fiberscope with a camera for the mosaic type external attachment, and Fig. 5 is an explanatory diagram showing the configuration of a fiberscope with a camera for the mosaic type external attachment. FIG. 6 is a perspective view showing the entire system of the endoscope apparatus, FIG. 7 is a block diagram showing the structure of the field sequential process circuit, and FIG.
The figure is a block diagram showing the configuration of a mosaic process circuit.

As shown in FIG. 6, the endoscope device 1 houses a light source device and a video processor that processes video signals, and includes various scopes (endoscope 114> 2A, 2B).

The image carrier main body 1a is provided to which both 2G and 20.2E can be connected. There are five types of scopes as shown in the figure, namely, field sequential electronic scope 2
A. Color mosaic electronic scope using a color mosaic filter 2 [Fiber scope with an externally attached 31-plane sequential television camera (hereinafter referred to as fiberscope with a sequential television camera) 2C1 Color mosaic television camera There are an externally attached fiberscope (hereinafter referred to as a fiberscope with a color mosaic television camera) 2D1 and a fiberscope 2E.

Each of the scopes 2A, 28.2G, 2D, and 2E has an elongated insertion section 3 and an operation section 4 connected to the rear end side of the insertion section 3. is extended, and light source connectors 5A, 5B, 5C, 5D, and 5E are provided at the tips of this universal cord 5.

In addition, in the field-sequential electronic scope 2A and the color mosaic electronic scope 2B, signal connectors 6A and 6B are provided on the distal end side of the universal cord 5 in addition to the light source connectors 5A and 5B. In addition, the fiber scope 2C with a field-sequential TV camera and the fiber scope 2D with a color mosaic TV camera have a structure in which a field-sequential TV camera 8C and a color mosaic TV camera 8D are respectively attached to the eyepiece 7 of the fiberscope 2E. A connector 60°6D is provided at the tip of the signal cable extending from each television camera 8G, 8D.

Each of the scopes 2A, 2B, 2C, 20, 2E (hereinafter,
If it is common to all these scopes, it is represented by the code 2. ) connectors 5A, 6A:5B, 6B:5G,
Two sets of connector receivers are provided, for example, on the front surface of the housing of the imaging device main body 1a, so that each scope 2 can be set in a usable state by connecting the scopes 6C:5D and 6D:5E. These connector receivers include a surface sequential light source connector receiver 11a, a surface sequential signal connector receiver 12a, and a surface sequential light source connector receiver 12a.
, a white light source connector receiver 11b, and a color mosaic type signal connector receiver 12b.

The field-sequential light source connector receiver 11a is a light source of the same shape as that of the field-sequential electronic scope 2A and the field-sequential fiber scope with television camera 2G (these two scopes 2A and 2G are also referred to as the field-sequential scope). It has a shape that allows connection of connectors 5A and 5G for each.

The screen sequential signal connector receiver 12a adjacent to the lower side of the screen sequential light source connector receiver 11a is connected to the screen sequential type electronic scope 2A, the screen sequential type fiber scope with a TV camera 2G, that is, the screen sequential type scope 2A. , 2G, each having the same shape as the signal connectors 6A and 6G can be connected to each other.

On the other hand, the white light source connector receiver 11b includes the light source connector 5B of the color mosaic type electronic scope 2B and the color mosaic type fiber scope with television camera 2D (these two scopes 2B).

2D is also referred to as a mosaic scope. ), and the light source connector 5E of the fiberscope 2E can be connected to the
．． 5D and 5E have the same shape. In addition, the color mosaic signal connector receiver 12b adjacent to the lower side of the white light source connector receiver 11b is provided with a signal connector 6B of the color mosaic electronic scope 2B and a signal connector 6B of the color mosaic type fiberscope with television camera 2D. These connectors 6 can be connected to connector 6D.
B and 6D have the same shape.

When the fiber scope 2E is connected and used, the observation is performed with the naked eye, but the other scope 2A is used.

28. When using 2G or 2D, the imaging device main body 3
A color monitor 13 connected to the signal output terminal of the camera can display the captured image in color.

Incidentally, a light source connector 5A in each scope 2.

5B, 5C, 5D, and 5E, in this embodiment, are provided with air/water supply connectors as well as light guide connectors, and the connector receivers 118, 11b are also structured to connect these.

The interior of each of the scopes 2A, 2B, 2G, and 20.2E is shown in FIG. 2(a) and FIG. 2(b), respectively.

It is constructed as shown in FIGS. 3, 4, and 5.

A light guide 14 for transmitting illumination light is inserted through each scope 2, and a light source section 15 in the imaging device main body 1a is inserted into each scope 2.
The illumination light supplied to the input end face from a or 15b is transmitted to the output end face side, and passes through a light distribution lens 16 disposed in front of the output end face to illuminate the subject side in front.

Further, in each of the scopes 2, an objective lens 17 for imaging is disposed at the distal end of the insertion section 3. This objective lens 1
In both the field-sequential type or color mosaic type electronic scope 2A or 2B, a solid-state wire such as COD or an image element 18 is arranged at the imaging position 7, while on the other hand, the fiber scope 2E, the television camera 8C or 8D The fiberscope 2C or 2D equipped with a television camera is arranged so that the incident end face of the image guide 19 faces.

Further, an eyepiece lens 21 is disposed opposite the output end surface of the image guide 19. In the fiberscope 2E, the eyepiece 7 can be brought close to the eyepiece for observation with the naked eye.

On the other hand, the eyepiece section 7 of the fiberscope 2E is equipped with a frame sequential type television camera 8C or a color mosaic type television camera 8.
In the device equipped with D, a solid-state image carrier 22 is disposed opposite the eyepiece 21 (through an imaging lens (not shown)).

The solid-state imaging device 18 or 22 constituting the imaging means is m
The optical image formed on the image plane is photoelectrically converted and the preamplifier 24
After being amplified by the signal transmission line, the signal is connected to the signal connector 6 (6A, 68.6G).

Represents 6D. ) side, and passes through the signal connector receiver 12a or 12b to which this connector 6 is connected,
The signal is input to a video processor 25a or 25b. Furthermore, a clock for driving the solid-state imaging device is applied to each solid-state image sensing device 18 or 22 from a driver 26a or 26b of the video processor 25a or 25b.

In addition, for scopes other than the fiberscope 2E, a type signal generation circuit 2 that outputs a type signal for scope identification is provided.
7A, 27B, 270.270 are provided, and the identification circuit 2 in the m-image device main body 1a is connected via the signal connector 6.
8a or 28b.

By the way, as shown in FIG. 2(a), the interior of the imaging device main body 1a to which any of the scopes 2 can be connected includes two sets of light source units 15a and 15b and two sets of video processors 25.
a and 25b are stored.

One light source section 15a is of a field sequential type, and includes a light source lamp 31a that emits white light and a red (R) light source.

A rotary filter 33a has color transmission filters for three primary colors, green (G) and blue (B), and is rotationally driven by a motor 32a.
It is equipped with The white light emitted from the light source lamp 31a passes through the rotating filter 33a,
After being sequentially made into illumination light of each wavelength of R, G, and B, the light is condensed by a condenser lens 34a, and the illumination light is supplied to the incident end surface of the light guide 14 attached to the connector receiver 11a. .

The other light source section 15b is a white light source and includes a white light source lamp 31b that emits white light.

The white light emitted from the white light source lamp 31b is condensed by a condenser lens 34b, and is supplied as white illumination light to the incident end surface of the light guide 14 attached to the connector receiver 11b.

By the way, one video processor 25a is for frame-sequential signal processing, and the signal input to the signal input terminal of the frame-sequential signal connector receiver 12a is input to the frame-sequential process circuit 41a. , R, G, and B wavelengths are respectively imaged under illumination light of each wavelength as a color signal R,
It is designed to output as G and B. These color signals R and G.

B is converted into an NTSC composite video signal by the output circuit 113 and outputted from the NTSC output terminal 46, and three primary color signals R, G, and B are outputted from the RGB output terminal 43.

Note that the rotating color filter 3 of the field sequential light source section 15a
A rotational position sensor 51a for detecting the rotational position is provided at one location on the outer periphery of the rotational position sensor 5.
1a synchronizes the clock timing of the timing generator 52a with the rotation of the rotary filter 33a,
Further, the output of the timing generator 52a controls the timing of the frame sequential process circuit 41a.

The frame-sequential process circuit 41a is configured as shown in FIG. 7, for example.

That is, the signal inputted via the preamplifier is inputted to the sample and hold circuit 54, sampled and held, and then subjected to γ correction in the γ correction circuit 55, and converted into a digital signal by the A/D converter 56. The signals captured under sequential R, G, and B illumination through the multiplexer 57, which is switched by the signal from the timing generator 52a, are written to the R frame memory 58R, the G frame memory 58G, and the B frame memory 58B. be included.

The signal data written in each of these frame memories 58R, 58G, and 58B are simultaneously read out and converted into analog color signals R1G and B by a D/A converter 59, respectively.
The signal is output to the output circuit 113.

The other video processor 25b is for color mosaic signal processing, and is connected to the solid-state image sensor 18 or 22 via the color mosaic signal connector 12b.
The imaged signal is sent to the color mosaic process circuit 4.
1b, luminance signal 71 color difference signal 4R-Y, B-Y
is output.

This signal is then input to the output circuit 113,
The signal is converted into a composite video signal of the NTSC system and outputted from the same NTSC output terminal 46 as the signal captured in the frame sequential manner, and three primary color signals R and G.

The signal is converted into B and output from the same RGB signal output terminal 43.

The color mosaic process circuit 41b is configured as shown in FIG. 8, for example.

That is, the solid-state image sensor 1 amplified by the preamplifier 24
The signal from 8 or 22 passes through a brightness signal processing circuit 61 to generate a brightness signal Y. In addition, the color signal reproducing circuit 62
and the color difference signal R-Y.

B-Y is generated time-series for each horizontal line, white balance compensated by the white balance circuit 63, one is sent directly to the analog switch 64, and the other is delayed by one horizontal line by the one-day delay line 63a and sent to the analog signal. is input to the switch 64a, and the timing generator 52
Color difference signals R-Y and B-Y are obtained by the switching signal b.

Incidentally, the output circuit 113 is configured as shown in FIG.

That is, the color signals R, G, 8 from the frame sequential process circuit 41a are input to the matrix circuit 44a,
A luminance signal Y and color difference signals RY and BY are generated. The luminance signal Y and color difference signals R-Y, B-Y output from the matrix circuit 44a, and the luminance signal Y from the color mosaic process circuit 41b.
The color difference signals R-Y and B-Y are each input to a three-circuit, two-contact changeover switch 81. When one contact side of this changeover switch 81 is selected, the signal of the matrix circuit 44a is outputted, and when the other contact side is selected, the signal of the color mosaic process circuit 41b is outputted. ing. This changeover switch 8
The output of 1 is input to the NTSC encoder 45 and the inverse matrix circuit 44b.

In this embodiment, the changeover switch 81 and the NTSC
Encoder 45. Between the inverse matrix circuit 44b,
A contour enhancement circuit 112 is provided, and the changeover switch 81
The luminance signal Y from the
The NTSC encoder 45, 31 matrix circuit 4
4b. Therefore, the signal from the frame sequential process circuit 41a and the signal from the color mosaic process circuit 41b are transmitted to the common edge enhancement circuit 1.
12 allows you to enhance the outline.

NTS converted by the NTSG encoder 45
The C format video signal is output from the NTSC output terminal 46. Further, the three primary color signals R, G, and B converted by the inverse matrix circuit 44b are outputted from the RGB output $43 through (coaxial cable) drivers 42, 42, and 42, respectively. .

The changeover switch 81 may be manually switched, or the type signal output from the connected scope may be used, and this type signal may be identified by the identification circuit 28a or 28b, and the connected scope may be switched using the identification signal. A process circuit 41a or 41 that performs signal processing corresponding to
It is also possible to switch to b.

Note that each of the timing generators 52a and 52b applies a signal to the driver 42 and the NTSC encoder 45, respectively, and is controlled to perform signal processing in synchronization with a drive pulse used to read out a signal from the solid-state image sensor 18 or 22. In this case, in the frame-sequential video processor 25a, the timing generator 52a is synchronized with the rotating color filter 33 by the output of the position sensor 51a. Note that the NTSC encoder 45 is constructed with a built-in buffer.

By the way, the type signal generation circuits 27A and 27B.

27G and 27D are formed, for example, by connecting resistors with different resistance values between two terminals, and on the other hand, the identification circuits 28a and 28b use a comparator or the like to determine the resistance value between the two terminals. It is possible to identify whether the value scope is connected. .

For example, when the signal connector 6B or 6D of the color mosaic type electronic scope 2B or color mosaic type fiber scope with television camera 8D is connected to the field sequential type signal connector receiver 12a, the resistance value for the field sequential type signal connector 6B or 6D is connected to the field sequential type signal connector receiver 12a. The identification circuit 28a identifies that the device is not in use, and in response to the identified signal, the warning circuit 66a notifies the user by making a warning sound, blinking an LED, or the like.

The identification circuit 28b also identifies the connector 6A of the field sequential electronic scope 2A or the connector 6C of the field sequential fiberscope with television camera 2C connected to the color mosaic signal connector receiver 12b. A warning circuit 66b issues a warning.

On the other hand, when the connector 6A or 6C of the frame-sequential scope 2A or 2C is connected to the frame-sequential signal connector receiver 12a, the warning circuit 66a does not operate and no notification is issued. (The LED may light up to indicate that the connection is correct.) Similarly, the color mosaic connector receiver 12
b, when the connector 6B or 6D is connected to the color mosaic type scope 2B or 2D, the warning circuit 66b does not operate. (It may be possible to identify that the connection is correct and indicate this by lighting an LED in a different position or color than in the case of 6 notifications.) In addition, the connector receiver for both signals 1
A warning may also be issued when two signal connectors are connected to 2a and 12b at the same time. Furthermore, a light source connector connection detection means can be provided inside the field sequential light source connector receiver 11a, so that when the connector 5e of the fiber scope 2e is connected, it is possible to notify that the connection is incorrect. That is, the connector 5E is connected to the connector receiver 11a, and the signal connector receiver 1
This is possible if a warning is issued when neither connector is connected to 2a or 12b.

As described above, in this embodiment, the frame-sequential video processor 25a and the color mosaic video processor 25b are provided in the imaging device main body 1a. Therefore, signal processing corresponding to the frame sequential type scopes 2A, 2G and the color mosaic type scopes 2B, 2D can be performed, and the subject image carried by the scopes can be displayed in color on the color monitor 13.

Moreover, the frame-sequential video processor 25a and the color mosaic video processor 25b provide an edge enhancement circuit 112, an NTSC encoder 45, and a driver 42.
is common. Therefore, compared to the case where two sets of these circuits are provided independently for each m-power type, the number of parts can be reduced, costs can be reduced, and the circuit configuration can be simplified.

Note that the circuits that are shared between the frame sequential method and the color mosaic method are not limited to the circuits described above, but also include a line interpolation circuit, frame memory, still image memory, color burst generation circuit, power supply, character generator, super enhancement circuit,
It may also be a keyboard controller color tone adjustment circuit, etc.

Note that a circuit may be provided to avoid these signal processing circuits, and the circuit may be bypassed when signal processing is not performed.

Further, in this embodiment, the frame sequential video processor 25. a. In addition to the color mosaic video processor 25b, a frame sequential light source section 15a;
A white light source section 15b is provided. Therefore, the field sequential type scopes 2A, 2G and the color mosaic type scope 2B
, 2D is connected, the illumination light and signal processing corresponding to the connected scope can be supplied and the subject image carried by the scope can be displayed on the color monitor 1.
3 can be displayed in color.

Furthermore, when using the fiber scope 2E, by connecting the light source connector 5E to the white light source connector receiver 11b, white light can be supplied to the fiber scope 2E for naked eye observation.

Furthermore, in this embodiment, if an incorrect scope is connected to the two sets of connector receivers 12a and 12b provided in the imaging device main body 3, the identification circuit 28a or 28b detects that the connection is not correct. , a warning can be issued by the warning circuit 66a or 66b.

Therefore, if one imaging device main body 1a is provided, it can be used with different scopes with different color imaging methods, and can also be used simultaneously with the fiber scope 2E. Additionally, if an incorrect connection is made, a warning is given, making the device easy to use. It goes without saying that erroneous connections can be eliminated if the connectors 6 (connector receivers 12) have different shapes for the field-sequential type and the mosaic type.

Further, the output formats of the signals after signal processing are performed for the two color image transport methods are the same. In other words, 3
Since the primary color output or the NTSC video signal is matched, the same color monitor 13 can be used. (
This color monitor may be one that supports three primary colors or one that receives an NTSC video signal. ) In addition, a TV camera 8C or 8 is attached to the fiber scope 2E.
When D is attached, the captured image is displayed on the color monitor 13.
It will be displayed on TV camera 8C or 8.
When D is removed, the fact that it is removed may be displayed on the screen of the color monitor 13. That is,
For example, it may be displayed that the fiberscope 2E is currently observing, or a certain image may be displayed.

FIG. 9 shows a modification of the connector and connector receiver.

In the imaging device main body 18', a round field-sequential light source connector receiver 71a and a signal connector receiver 72a, a white light source connector receiver 71b, and a color mosaic signal connector receiver 72b are spaced apart on the front surface of the housing. It is provided. Both connector receivers 718.71b or 72a
, 72b have the same shape as each other.

On the other hand, as shown in FIG. 9(a), the field sequential type scope 2A has a light source connector part and a signal connector part integrated so that it can be connected to the field sequential type light source connector receiver 71a and the signal connector receiver 72a. A connector 73A is provided.

Similarly, the color mosaic type scope 2B is shown in Fig. 9 (b).
), a connector 73B is provided which can be connected to the white light source connector receiver 71b and the color mosaic signal connector receiver 72b.

In addition, as shown in FIG. 9(a), the field-sequential fiber scope 2C with television camera is the same as the connector 73A of the field-sequential electronic scope 2A when the light source connector 74A and signal connector 75A are combined. It can be shaped into any shape, and can be used by connecting to the surface sequential type connector receivers 71a and 72a. In addition, as shown in Fig. 9(b), a fiberscope 2 with a color mosaic television camera is installed.
0, when the light source connector 74A and the signal connector 75B are combined, the color mosaic electronic scope 2B
It can be made to have the same shape as the connector 73B, and can be connected to the white light source connector receiver 71b1 and the signal connector receiver 72b.

In addition, by connecting the light source connector 74 of the fiber scope 2E to the white light source connector receiver 72b,
White light can be supplied to the light guide of the fiber scope 2E, allowing observation with the naked eye.

This is different from the connections shown in FIGS. 9(a) and 9(b). When the connection is made, the signal of the type signal generation circuit is identified by the identification circuit by the connection of the signal connector as described in the first embodiment, and a warning is issued.

FIG. 10 is a block diagram showing the configuration of an output circuit according to a second embodiment of the present invention.

This embodiment supports both frame-sequential and mosaic signals (
Although signal processing such as edge enhancement is also performed on the luminance signal (luminance signal), the signal processing can be selected.

As shown in FIG. 10, the changeover switch SW1. S
W2 is provided. One switching contact a of the changeover switch SW1 receives the signals from the matrix circuit 44a (luminance signal Y1 color difference signal R-Y, B-Y), and the other switching contact receives a mosaic process circuit. 41
Signals (Y, RY, B-Y) from b are input. Furthermore, a signal from the matrix circuit 44a that does not pass through the signal processing circuit 121 is input to one switching contact a of the changeover switch SW2, and a signal that does not pass through the signal processing circuit 121 is input to the other switching contact a. The signal is now being input. Further, between the changeover switch SW2 and the NTSC encoder 45, a changeover switch SW3 is provided. This changeover switch SW
The signal from the changeover switch SW2 is input to one changeover contact a of the switch SW2, and the signal from the mosaic process circuit 41.3 that does not pass through the signal processing circuit 121 is input to the other changeover contact. The signal from b is input.

On the other hand, a changeover switch SW4 is provided before the inverse matrix circuit 44b. This changeover switch SW4
A signal from the signal processing circuit 121 is inputted to one switching contact a, and a signal from the mosaic process circuit 41b is inputted to the other switching contact a.

Further, a changeover switch SW5 is provided between the inverse matrix circuit 44b and the driver 42. One switching contact a of this changeover switch SW5 includes a matrix circuit 44a, a signal processing circuit 121. and a field sequential process circuit 41a that does not pass through the inverse matrix circuit 44b.
The signals (three primary color signals R, G, B) from the inverse matrix circuit 44b are input to the other switching contact, and the signals (R, G, B) from the inverse matrix circuit 44b are input to the other switching contact.

Each of the switches SW1 to S when the signal processing circuit 121 performs signal processing (on) or not (off)
The state of W5 is as shown in the logic table below. In the table, Δ indicates that it may be on either side.

Logic Table In this embodiment, by controlling each of the switches SW1 to SW5 as shown in the logic table, it is determined whether or not the signal from the frame-sequential process circuit 41a and the signal from the mosaic process color 41b are processed. Or you can choose.

Further, when the signal from the frame sequential process circuit 41a is not processed, the R, G, B signals from the frame sequential process circuit 41a are passed through the matrix circuit 44a and the inverse matrix circuit 44b and then processed again for R, G, and G signals. , B signals are not returned, and the R, G, and B signals from the field sequential process circuit 41a are not returned to the changeover switch SW5.
．． It passes through the driver 42 and is output directly from the RGB output terminal. Therefore, deterioration of the signal when signal processing is not performed is prevented.

In the example shown in FIG. 10, the luminance signal Y1, the color difference signal R-
I am trying to perform signal processing on Y and B-Y, but
Signal processing may be performed only on the luminance signal.

11 to 14 relate to a third embodiment of the present invention, in which FIG. 11 is a block diagram showing the configuration of the imaging device main body, FIG. 12 is a block diagram showing the configuration of the output circuit, and FIG. FIG. 14 is a perspective view showing the connector and the connector receiver, and FIG. 14 is an explanatory view showing the detection means of the connected scope.

In this embodiment, the signal side input terminal of the electronic scope 2 is shared.

The signal connector receiver 72' is common to the light source connector receivers 71a=, 71b- of the imaging I1w main body 101 of this embodiment.
has the shape shown in FIG. 13, for example, and the connector 73A' of the field-sequential scope 2A or the connector 73B' of the mosaic type electronic scope 2B are connected to the common signal connector receiver 72'. The connector portion can be connected, and the light source connector portion can be connected to the light source connector receivers 71a'' and 71b' provided above and below, respectively.Furthermore, similarly, the scope 2 with a screen sequential TV camera can be connected.
C light source connector 74' and signal connector 75A'
The same applies to the connectors 74' and 75B- of the scope 2D with a mosaic television camera. Furthermore,
It can be connected to the connector receiver 71b- of the fiber scope 2E.

The internal configuration of the imaging device main body 101 is as shown in FIG.

As shown in FIG. 11, the output signal of the type signal generating circuit (for example, 27A) inputted to the common identification circuit 28 via the common signal connector receiver 72-, for example, is connected by this identification circuit 28. Determine the scope. The identification circuit 28 includes both drivers 26a and 2 as in the first embodiment.
In addition to changing 6b to ms, a newly installed changeover switch 103
control switching. For example, when the field sequential type scope 2A or 2C is connected as shown in FIG. The signals read out from the image element 18 are sequentially sent to the thorn process circuit 41.
input to a.

On the other hand, if the field sequential type scopes 2A and 2C are not connected, the mosaic type process circuit 4Ib side is selected. In addition, mosaic type scope 2B or 2D
It is also possible to detect this case and switch the changeover switch 103 to the mosaic type side.

The identification circuit 28 also sends a control signal to the timing generator 52, which has a part of the circuit in common, so that it can handle either method.

Further, in this embodiment, the process circuit 41a or 41b
The signal that has passed through the circuit passes through an output circuit 80 shown in FIG. 12 and is outputted from a common output terminal. In this output circuit 80, the color signals R, G, and B from the frame sequential process circuit 41a are input to the matrix circuit 44a,
A luminance signal Y and color difference signals RY and BY are generated. The signal is output from this matrix circuit 44a. Luminance signal Y, color difference signals R-Y, B-Y, and luminance signal Y from the mosaic process circuit 41b.
The color difference signals R-Y and B-Y are input to different switching contacts of a three-circuit, two-contact switching switch 81, respectively.

When one contact side of this changeover switch 81 is selected, the signal of the matrix circuit 44a is outputted,
When the other contact side is selected, the signal from the mosaic process circuit 41b is output. The output of this changeover switch 81 is input to the NTSC encoder 45, and the NTSG encoder 45 outputs the NTSC
NTSC video signal is converted to a common NTSC output terminal 4
It is designed to be output from 6.

Also, lti from the mosaic process circuit 41b
The color difference signal Y and color difference signals R-Y and B-Y are input to an inverse matrix circuit 44b, and are converted into three primary color signals R0G and B by this inverse matrix circuit 44b. The signal from the inverse matrix circuit 44b and the signal from the field sequential process circuit 41b are input to different switching contacts of a three-circuit, two-contact switching switch 82. This changeover switch 82 is configured such that when one contact side is selected, the signal from the field sequential process circuit 41a is output, and when the other contact side is selected, the signal from the inverse matrix circuit 44b is output. It has become. The output of this changeover switch 82 is outputted from a common RGB output terminal 43 via (coaxial cable) drivers 42, 42, 42.

Each of the changeover switches 81 and 82 can be manually switched, or they can be switched in conjunction with each other. In addition, the changeover switch 8
1.82 as shown in FIG. 11, this type signal is identified by the identification circuit 28, and the changeover switch 81.
It is also possible to switch the process circuit 82 to a process circuit 418 or 41b that performs signal processing corresponding to the connected scope. For example, when it is identified as the frame sequential type scope 2A or 2C, the scope is switched to the frame sequential side shown in FIG. 12.

In addition, when the changeover switches 81 and 82 are formed of analog switches or the like, a connection detection device 191 shown in FIG.
It is also possible to switch automatically by

For example, a field-sequential type connector is provided with an identification bin 92 that is not provided in a mosaic-type connector, and a field-sequential type connector receiver is provided with a recess into which the bin 92 can be inserted. Lateral holes 93.93 are provided on opposite sides of this recess, and a light emitting element 94 such as an LED and a light receiving element 95 such as a photodiode are arranged, and the output of the light receiving element 95 is transmitted to the detection circuit 9.
6 is input. When the bottle 92 is inserted into the recess,
The light from the light emitting element 94 is blocked, and the output from the light receiving element 95 becomes "
The output changes from “L” to “H” etc., and the detection circuit 9 detects this output change.
6 is detected and the changeover switches 81 and 82 are switched so that the field sequential side is conductive. Note that when the output of the light receiving element 94 is L'', the mosaic type process circuit side is selected.

Note that the timing generator 52 applies a signal to the driver 42 and the NTSC encoder 45, and performs control so that signal processing is performed in synchronization with a drive pulse used to read out a signal from the solid-state pixel sensor 18 or 22.

The other configurations are the same as in the first embodiment.

In this way, in this embodiment, the identification circuit 28. Timing generator 52.
NTSG encoder 45. and the driver 42 are common.

Furthermore, in this embodiment, the signal input end (signal connector receiver 72') and output end are common for the field sequential type and the color mosaic type, and the signal connector of the scope 2 is used for signals of different systems. This prevents incorrect connections from being made to the connector receiver.

In addition, in FIG. 11, for example, the light source lamp is made movable, and the two light source parts 15a and 15b shown in FIG.
It is also possible to form . Further, the two light source lamps 31a and 31b may be made interchangeable by rotational operation and used as auxiliary lights.

In this embodiment, as in the first embodiment, if the light source connector of the fiber scope 2E is connected to the imaging device main body 101, observation with the naked eye can be performed.

Incidentally, when only the connector 74' of the fiber scope 2E is connected to the white light source connector receiver 71b', the connection may be displayed.

In the second embodiment, the signal connector receiver 72' is common, but it may be provided separately as shown in FIGS. 6 and 9.

Further, in the output circuit 80 shown in FIG. 12, a circuit for performing luminance signal processing and signal processing for each of the R, G, and B color signals may be provided after the changeover switches 81 and 82.

Alternatively, the output circuit 80 may not be provided, and the output terminals may be provided separately for the field sequential type and the mosaic type.

Furthermore, instead of the output circuit 80, an output circuit 113 shown in FIG. 1 or an output circuit shown in FIG. 10 may be provided.

FIGS. 15 and 16 relate to a fourth embodiment of the present invention, with FIG. 15 being a perspective view showing the external appearance of an endoscope device, and FIG. 16 being a block diagram showing the configuration of the main body of the imaging device.

In this embodiment, as shown in FIG.
91 is separated into a light source section 211 and a video processor section 212.

As shown in FIG. 15, a light source connector receiver 194 is provided on the lower front side of the light source section 211, and a signal connector receiver 195 is provided on the upper front side of the video processor section 212. Connector receiver 194,1
95 is a light source section 21 on the top surface of the video processor section 212.
It is arranged so that when 1 is stacked, the positions are vertically adjacent to each other.

On the other hand, the field-sequential electronic scope 2A has its connector 19
The light source connector part and the signal connector part 7 are integrated, and when the light source part 211 and the video processor part 212 are overlapped as shown in FIG. 15, they can be connected to both connector receivers 194 and 195.

On the other hand, for example, the mosaic type electronic scope 2B has a connector divided into a light source connector 198 and a signal connector 199, and the connectors 198 and 199 can be connected to connector receivers 194 and 195, respectively. Further, for example, in the case of the fiberscope 2C with a field-sequential television camera, the light source connector 198 and the signal connector 200 can be connected to the connector receivers 194 and 195, respectively. Although not shown, the fiber scope 2D with a mosaic television camera also has the connector receiver 194.19.
5, and the fiberscope 2E can connect its light source connector to the connector receiver 194.

The light source section 211 is provided with a field sequential light source section and a white light source section separately. Incidentally, FIG. 16 shows an example of a field sequential light source section. The surface light source section and the white light source section have substantially the same configuration as the field sequential light section 15a1 and the white light source section 15b shown in FIG. 2(a) and FIG. 11, respectively.

The video processor unit 212 has a configuration substantially similar to that of the video processor unit in the image carrier main body 101 shown in FIG. 11, and has a frame-sequential type and a mosaic type. is common.

In this embodiment, the timing generator 52a is provided on the video processor section 212 side.

The video processor section 212 is connected to a connector 202 of the cable 201 in order to send timing pulses from the timing generator 52a to the light source section 211.
, 202 is provided, and similarly, the video processor section 212 is also provided with a connector receiver 203.

Further, the light source section 211 is provided with a connection detection circuit 204 that detects whether the connector 202 of the signal cable 201 is connected to the connector receiver 203. When illuminating in a frame sequential manner, the connection detection circuit 204 detects whether the connector 202 of the signal cable 201 is connected to the connector receiver 203. cable 2
01 is not connected, a warning can be given by a buzzer 206 driven by a warning circuit 205 or by lighting a lamp 207.

On the other hand, in the video processor section 212, the connector 20 of the signal cable 20'1 is also connected to the connector receiver 203.
A connection detection circuit 2 detects whether or not 02 is connected, and which of the frame sequential light source section and the white light source section is connected.
10 are provided.

The output of this connection circuit 210 is input to the outlet path 66. When the frame-sequential light source unit 211 and the mosaic scope 2B or 2D are connected to the video processor unit 212, and when the white light source unit and the frame-sequential scope 2
When A or 2C is connected, a warning is generated by the buzzer 213 driven by the warning circuit 66 and the lamp 21
A warning is issued by lighting up the number 4.

Further, in this embodiment, the changeover switch 103 and the changeover switches 81 and 82 in the output circuit 80 are configured to be changed over by the output of the connection detection circuit 210. That is, the video processor section 212 includes the frame sequential light source section 21.
1 is connected, each of the switches 103.81.8
2 is switched to the field sequential type side, and on the other hand, when the white light source section is connected, each switch 103, 81, 82 is switched to the mosaic type side. In addition, these switches 103.8
The switching of 1.82 may be performed manually or may be performed using the output of the identification circuit 28.

Other configurations, operations, and effects are the same as those of the third embodiment.

In this embodiment, the signal connector receiver 195 is common, but it may be provided separately as shown in FIGS. 6 and 9.

Alternatively, the output circuit 80 may not be provided and the output terminals may be provided separately for the field sequential type and the mosaic type.

Furthermore, instead of the output circuit 80, an output circuit 113 shown in FIG. 1 or an output circuit shown in FIG. 10 may be provided.

Further, the light source section 211 may include a field-sequential light source section 15a and a white light source section 15b, as shown in FIG. 11. Further, the light source lamp 31 may be made movable. Furthermore, when the rotary filter 33a is made movable and used as a field-sequential light source, the rotary filter 33a is interposed in the optical path of the light source lamp 31 and the lens 34.On the other hand, when used as a white light source, the rotary filter 33a is The filter 33a may be retracted from the optical path of the light source lamp 31 and the lens 34.

Furthermore, by using a rotating filter 152 as shown in FIG. 18 in place of the rotating filter 33a, and changing the field sequential illumination lights to R, W (white light), and B, as shown in FIG. It is also possible to output field-sequential illumination light and white light by using the light source lamp 31 in common.

In the rotary filter 152, as shown in FIG. 18, a fan-shaped window is provided in a disc-shaped filter frame 153, and each chamber has an R, W window that transmits R, W, and B.

The color transmission filters 154R, 154W, and 154B of B are attached. This W transmission filter 154W has R, G
, B. (Incidentally, a transparent plate may be used to allow all white light to pass through.) In addition, the R, G, and B color transmission filters 154R, 154W,
154B, the length of the arc shape is adjusted so that the illumination period is different according to the photosensitive characteristics of the solid-state image sensor 18 or 2-2.

The filter frame 153 is provided with color transmission filters 154R, 154W, and 154B (rotational direction
(Regarding) Read pulse (detection) holes 155R and 155W near the ends, respectively.

155B is provided. These read pulse holes 155
The positions of R, 155W, and 155B are the photo sensors 156 arranged opposite to each other so as to sandwich the light emitting element and the filter frame 153.
When the light emitting element reaches a position facing the light emitting element 156, the light from the light emitting element is received in a pulsed manner by the photosensor 156, thereby allowing detection. Detection is possible by receiving this pulsed light. When this pulsed light is detected, the detection signal is
As shown in the figure, the driving pulse is transmitted to the timing generator 52a and applied via the driver 26a or 26b for reading out the solid-state image device 18 or 22.

The filter frame 153 has, for example, a read pulse hole 1.
A start pulse hole 157 is provided at a position adjacent to 55R in the radial direction, and when this position reaches a position facing the 7th sensor 158, the photosensor 158 outputs a start pulse.

Furthermore, in order to detect the position of the color transmission filter 154W of W, a long hole 159 is formed in an arc shape at the outer circumferential position of the color transmission filter 154W, and this long hole 159 is detected by a photosensor 160. This allows the position of the W color transmission filter 154EW to be detected. The output of this photosensor 160 controls the stop position of the rotary filter 152. In other words, when the motor 32a that rotationally drives the rotary filter 152 is not in a rotational driving state, the output of the photosensor 160 is set so that the rotary filter 152 is stopped at a position where its elongated hole 159 faces the 7-point sensor 160. is input to a rotation/stop control circuit 161 that controls rotation/stop of the motor 32a, and controls the stop position of the rotary filter 152. In this stopped position state, the illumination light from the light source lamp 31 passes through the W color transmission filter 154W, and passes through the light source connector receiver 71.
It is designed to be able to supply white illumination light. Note that when a fiber scope is connected to the connector receiver 194 and nothing is connected to the connector receiver 195, or when nothing is connected to the connector receivers 194 and 195, the identification circuit detects a high impedance state. (This is possible by doing this.) Or, when a mosaic scope is connected, it will be in this white lighting state.

On the other hand, when the frame-sequential scope is connected, the identification circuit 28 detects the connection and outputs a command signal to the rotation/stop control circuit 161 to rotate the motor 32a.
2a is rotated to bring it into a frame-sequential illumination state.

By the way, in this embodiment, the frame sequential illumination light is RlG, B
Therefore, the frame-sequential process circuit 41a, for example,
The configuration is as shown in Figure 9.

That is, in the process circuit 41a shown in FIG.
W frame memory 58 instead of G frame memory 58G
W (the memory contents are different, but the same frame memory can be used in terms of hardware), and further read from the W frame memory 58W, and the D/A converter 5
The W color signal converted into an analog signal in step 9 is input to a subtracter 163, which subtracts the R color signal and the B color signal to generate a G color signal. Others are the process circuit 41a shown in FIG.
It is similar to

According to this example, both the field-sequential type and the mosaic type use the same light source, and can be used simply by connecting a scope, making it easy to use. Further, there is no need to newly provide a moving means for moving the light source section or the rotary filter section, and the cost can be reduced and the size can be reduced.

Further, in the above example, R, W in the case of frame sequential illumination.

B: However, it is not limited to this. For example, R, G, WOW, G, B: (, / (cyan), Ye (yellow), W: Cy, W, Mg ( magenta)
:W, Ye,! It can also be illuminated with Lo, etc.

FIG. 20 and FIG. 21 relate to the fifth embodiment of the present invention,
FIG. 20 is a block diagram showing the configuration of the main body of the imaging device;
FIG. 1 is a perspective view showing the appearance of the endoscope device.

In this embodiment, the mosaic type process circuit is detachable so that it can be used independently.

The imaging device main body 131 shown in FIG. 21 is provided with a light source connector receiver 134 that is shared with a frame-sequential signal connector receiver 133a so that a connector 132 of the frame-sequential electronic scope 2A can be connected. Can be displayed in color. The connector receivers 133a and 134 can also be used by connecting a connector (as shown) of a fiberscope 2C with a field-sequential television camera.

Also, in the case of the fiberscope 2E, observation with the naked eye can be performed by connecting the connector 135 to the light source connector receiver 134.

The light source section inside the light source connector receiver 134 is connected to the first
As shown in FIGS. 7 to 19, a rotary filter 152 that can perform field-sequential illumination when rotated is used.

The field sequential illumination is carried out when the field sequential signal connector is connected to the field sequential signal connector receiver 133a, and the rotary filter 15 is controlled by the type signal output at that time.
2 rotates to provide sequential illumination.

By the way, a recess is provided in the lower part of the front surface of the imaging device main body 131, so that a mosaic preprocessor unit 137 can be plugged in and installed. A signal connector receiver 133b is provided, and a signal connector 138 of the mosaic television camera 8D or a signal connector (not shown) of the mosaic electronic scope 2b can be connected to the connector receiver 133b. You can also do it.

As shown in FIG. 20, inside the imaging device main body 131,
A light source unit similar to that shown in FIG. 17 is housed, as well as a frame sequential processor. This frame-sequential processor is almost the same as the frame-sequential processor 25a shown in FIG. 2(a), for example, and is further equipped with a function for signal processing for contour enhancement shown in FIG. 1 on its output side. Next to the circuit 113. However, instead of the frame sequential process circuit 41a, a frame sequential process circuit 162 shown in FIG. 19 is used.

The changeover switch 81- in the output circuit 113 provided with this signal processing means can be switched when the mosaic type pre-processor unit 137 is plugged in.

According to this embodiment, as in the first embodiment, the edge enhancement circuit 112 and the like can be shared between the frame-sequential type and the mosaic type, and the mosaic type pre-processor unit 137 can be used alone.

That is, the mosaic type processor unit 13
If an NTSG encoder is provided after the mosaic process circuit 41b of No. 7, the NTSG encoder
An SC video signal is obtained.

Moreover, if the mosaic-type briprocessor unit 137 is purchased later if necessary, it can be used with a mosaic-type scope, and the functions of the device can be expanded economically.

In addition, even when the mosaic type pre-processor unit 137 is plugged in, a changeover switch SW is provided on the front surface of the imaging device main body 131, for example, so that it can be used by switching between frame sequential and mosaic type. S
W can be used to control switching of the selector switch 81'.

In this embodiment, the plug-in unit can be installed on the front side, but a mosaic video preprocessor unit or a part thereof can be inserted into an expansion slot provided on the rear side, etc., and the switch SW It can also be used with any field-sequential mosaic type scope.

Further, as shown in FIG. 22, a mosaic video processor 14'2 is stacked on the top surface of the image carrier main body 141 equipped with a signal processing means for a field-sequential scope, and a signal cable is connected to the mosaic video processor 142. 14
3 may be connected to the connector receiver of the imaging device main body 141 so that it can be used with any type of scope.

The front surface of the imaging device main body 141 is provided with connector receivers 133a and 134 as described above, and the mosaic video processor 142 is also provided with a connector receiver 133b.

In the apparatus shown in FIG. 20, a mosaic type unit can be attached to the image pickup device main body 131 for the field sequential type, but a field sequential type unit can be attached to the image pickup device main body 131 for the mosaic type. It can also be made to be able to be attached.

In each of the embodiments described above, the imaging scopes 2A, 2B, 2G
, the signal transmission between the 2D and the signal processing side is performed via electrical connector means, but the present invention is not limited to this, and the signal transmission and reception is performed by optical coupling. Also good. As a power source in this case, a battery may be housed in the operating section of the scope, or the light from the light guide may be supplied by an element having an electromotive force such as a thick F[pond].

In addition, an integrated frame-sequential and mosaic-type television camera is attached to the eyepiece of the fiberscope 2E.
It can also be used by switching with a changeover switch or the like. In this case, the illumination method and signal processing method on the light source side are also switched in conjunction with the switching. In this way, for example, the mosaic method may be used to observe a moving part, and the frame sequential method may be used when it is desired to observe a high-resolution image with little movement.

Note that different embodiments can be constructed by combining parts of the embodiments described above, and these also belong to the present invention.

Further, the present invention is not limited to being integrated with a light source device or used in combination with a light source device as in the above-described embodiments, but may be used alone.

[Effects of the Invention] As explained above, according to the present invention, it is possible to use both a frame-sequential type image pickup means and a color mosaic type image pickup means, and moreover, a part of the circuit of the signal processing means of both types can be used. Since these are common, it is possible to reduce costs and simplify the configuration.

[Brief explanation of the drawing]

FIGS. 1 to 8 relate to the first embodiment of the present invention.
The figure is a block diagram showing the configuration of the output circuit within the imaging device main body, FIG. 2(a) is a block diagram showing the configuration of the imaging device main body, and FIG. 2(b) shows the configuration of a color mosaic electronic scope. An explanatory diagram, Fig. 3 is an explanatory diagram showing the configuration of a fiberscope with a camera for the field sequential type external attachment, Fig. 4 is an explanatory diagram showing the configuration of a fiberscope with a camera for the mosaic type external attachment, and Fig. 5 is an explanatory diagram showing the configuration of a fiberscope with a camera for the mosaic type external attachment. Explanatory diagram showing the configuration of 6th
The figure is a perspective view showing the entire system of the endoscope device, Fig. 7 is a block diagram showing the configuration of the field sequential process circuit, Fig. 8 is a block diagram showing the configuration of the mosaic process circuit, and Fig. 9 is the connector. 10 is a block diagram showing the configuration of an output circuit according to a second embodiment of the present invention, and FIGS. 11 to 14 are a perspective view showing a modified example of the connector receiver. , Fig. 11 is a block diagram showing the configuration of the imaging device main body, Fig. 12 is a block diagram showing the configuration of the output circuit, Fig. 13 is a perspective view showing the connector and connector receiver, and Fig. 14 is a block diagram showing the configuration of the scope to be connected. 15 and 16 are explanatory diagrams showing the detection means, and relate to the fourth embodiment of the present invention, and FIG. 15 is a perspective view showing the external appearance of the endoscope device, and FIG.
The figure is a block diagram showing the configuration of the image carrier main body, Figures 17 to 19 relate to modifications of the fourth embodiment, Figure 17 is an explanatory diagram showing the configuration of the light source section, and Figure 18 is a rotating filter. FIG. 19 is a block diagram showing the configuration of a field-sequential process circuit, and FIGS.
Regarding the embodiment, FIG. 20 is a block diagram showing the configuration of the imaging device main body, FIG. 21 is a perspective view showing the external appearance of the endoscope device,
FIG. 22 is a perspective view showing a main body of an imaging apparatus according to a modification of the fifth embodiment. 1... Endoscope system @ 1a... Imaging device main body 2
A: Field sequential electronic scope 2B: Color mosaic electronic scope 2C: Field sequential fiber scope with television camera 2D: Fiber scope with color mosaic television camera 2E: Fiber scope 25a. ...File sequential video processor 25b...Color mosaic video processor 41a...Frame sequential process circuit 41b...Color mosaic process circuit 42...
Driver 43...RGB output terminal 44b...
Inverse matrix circuit 45...NTSC encoder 46...N'TSG output terminal 112...Contour emphasis circuit 113...Output circuit first
Figure 10 Figure 7 Figure 8 Figure 9 (b) Figure 16 Figure 17 Figure 18-19

Claims (1)

[Claims] A signal processing means for performing signal processing on a scope equipped with a frame-sequential color imaging means, and a signal processing means for performing signal processing on a scope equipped with a color mosaic type color imaging means, and both signal processing means An imaging device for an endoscope, characterized in that a part of the circuit is shared.