JPH0820604B2 - Control device for endoscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a control device for an endoscope in which a frame sequential processor and a mosaic processor which are separate bodies can be integrated and used.

[Prior Art] In recent years, an optical endoscope (also referred to as a fiberscope) which transmits an optical image formed by an objective lens at the distal end of an insertion portion to an operator's side by an image guide formed of a fiber bundle. Instead, an optical image formed by the objective lens is photoelectrically converted by a solid-state imaging device such as a charge-coupled device (hereinafter referred to as CCD), converted into an electric signal and transmitted to the hand side, and a video signal processing means is provided. An electronic endoscope (hereinafter also referred to as an electronic endoscope or electronic scope) that can be displayed on a color monitor via a video processor has been realized.

The above-mentioned electronic scope is currently used for the upper or lower digestive tract and has a diameter of about 10φ. However, for example, an endoscope for bronchus usually needs to have a diameter of about 5φ or less, and in order to realize an electronic scope for bronchus (small diameter), an imaging device with a small number of pixels must be used. Absent.

When the number of pixels is small, the color imaging method using a color mosaic filter in order to prevent a decrease in resolution, red, blue, and illuminate in a plane-sequential manner with light of each wavelength of green,
A frame-sequential color image capturing system is advantageous in which frame-sequential imaging is performed under the illumination, and these are combined to display in color. On the other hand, when the diameter can be made large and the number of pixels is large and sufficient resolution can be obtained, a mosaic color imaging method using a mosaic filter may be adopted.

In the case of the electronic scope, in addition to the light source device used in the fiber scope, a video processor that performs signal processing to generate a video signal that can be displayed on a color monitor is used.

By the way, in the conventional example, only the fiberscope or the electronic scope is dedicated, and the light source device for the fiberscope or the video processor and the light source device for the electronic scope cannot be shared.

For this reason, a system has been proposed in which an image pickup adapter can be connected to a fiberscope and displayed on a color monitor screen as disclosed in, for example, JP-A-60-243625.

The above-mentioned conventional example is capable of forming an electronic scope for performing color imaging of a frame-sequential system when an image pickup adapter is connected. Color display can be performed.

[Problems to be Solved by the Invention] The above system has a drawback that a color mosaic type scope cannot be connected and used.

In this case, it can be solved by purchasing a separate color mosaic type control device, but in that case, the cost becomes high and it becomes a separate body, so the operation of attaching and detaching the color monitor and connecting it becomes troublesome. There are drawbacks.

On the other hand, if a control device that can be used with any scope is realized, it is convenient, but it will be expensive, so it would be difficult to realize a control device that can be used with any scope by connecting an expansion unit. Considered to be advantageous.

The present invention has been made in view of the above points,
It is an object of the present invention to provide an endoscope control device that can be used with any scope by expanding it.

[Means and Actions for Solving Problems] An endoscope control device of the present invention is provided with a frame sequential process circuit for converting a video signal from a frame sequential solid-state image sensor into three primary color signals and a color mosaic filter. A mosaic type process circuit for converting a video signal from a mosaic type solid-state image sensor into a luminance signal and a color difference signal, and a video signal converted by either process circuit is displayed. In the main body of the endoscope control device having a signal conversion output circuit for performing signal processing so that color display is possible, the other one of the process circuits not included in the main body of the endoscope control device is provided. And an additional control device unit which has the process circuit and can be connected to the endoscope control device main body.

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

1 to 13 relate to a first embodiment of the present invention, FIG. 1 is a perspective view showing a schematic outer shape of a control device of the first embodiment, and FIG. FIG. 3 is a perspective view showing the entire endoscope apparatus, FIG. 3 is a block diagram showing a signal processing system of the control device,
Fig. 4 is a block diagram of the color mosaic electronic scope, and Fig. 5
The figure is a block diagram of a fiberscope equipped with a frame-sequential TV camera, Fig. 6 is a block diagram of a fiberscope equipped with a mosaic-type TV camera, Fig. 7 is a block diagram of a fiberscope, and Fig. 8 is a frame-sequential type. Configuration diagram of process circuit, FIG. 9 is a configuration diagram of a mosaic process circuit, FIG. 10 is a perspective view showing the configuration of a rotary filter, FIG. 11 is a perspective view showing a part of the rotary filter in a rotating state, FIG. 12 is an explanatory view showing a mounting opening portion of the control device and a connecting portion of the control device unit that can be housed in this mounting opening, and FIG. 13 is a side view of the connecting portion in a mounted state.

As shown in FIG. 2, an endoscope apparatus 1 having a first embodiment
Can be used by mounting the frame-sequential control device 2a, the mosaic-type control device unit 2b attached to the frame-sequential control device 2a (see FIG. 1), and the mosaic-type control device unit 2b. Various scopes 3A, 3B, 3
It is composed of C, 3D, 3E and a color monitor 4 capable of displaying a scope image by being connected to the frame sequential control device 2a.

Control device with the control device unit 2b mounted
As shown in FIG. 1, there are five types of scopes that can be used by connecting to 2a, that is, a frame sequential electronic scope 3A,
An electronic scope using a color mosaic filter (hereinafter referred to as a color mosaic type electronic scope or a mosaic type electronic scope) 3B, a fiberscope with an external frame sequential TV camera (hereinafter, a fiberscope with a frame sequential TV camera) 3C, There is a fiberscope 3D and a fiberscope 3E with a color mosaic type TV camera attached externally (hereinafter (color) fiberscope with mosaic type TV camera). Each scope 3A, 3B, 3C, 3D, 3E has an elongated insertion part 5,
An operating portion 6 is formed on the rear end side of the insertion portion 5, a universal cord extends from the operating portion 6, and light source connectors 7A, 7B, 7E, 7E, 7E are provided at the distal ends thereof, respectively.
In this case, in the frame-sequential electronic scope 3A and the color mosaic electronic scope 3B, signal connectors 8A and 8B are provided on the tip side of the universal cord in addition to the light source connectors 7A and 7B. Also, a fiberscope 3C with a frame sequential TV camera
And fiberscope 3D with color mosaic TV camera
Is a frame sequential TV camera on the eyepiece 9 of the fiberscope 3E.
11C and a color mosaic TV camera 11D are mounted respectively, and signal connectors 8C and 8D are attached to the ends of signal cables extended from the TV cameras 11C and 11D.

As shown in FIG. 2, in the control device 2a to which the control device unit 2b is not attached, a frame sequential electronic scope 3A and a frame sequential TV camera-equipped fiberscope 3C (hereinafter, may be abbreviated as a frame sequential scope). Yes.) Can be connected and used. Also, a fiberscope 3E can be connected and used.

By installing the mosaic control device unit 2b, the mosaic electronic scope 3B and the mosaic TV camera-equipped fiberscope 3D (hereinafter also referred to as the mosaic scope) can be connected and used. .

By the way, each of the above scopes 3A, 3B, 3C, 3D, 3E (represented by 3 when common to all scopes) is connected from one side of the panel 12 on the front surface of the control device 2a. A light source connector receiver 13 and a signal connector receiver 14 are provided at the positions.

Any of the scopes 3 is provided in the light source connector receiver 13
The light source connector can also be connected, and the signal connector receiver 14 can be connected to the signal connectors of all scopes having signal connectors (that is, 3A, 3B, 3C, 3D).

When the fiberscope 3E is connected and used, it is observed with the naked eye, but when the other scopes 3A, 3B, 3C and 3D are used, the scope monitor displays the scope image in color. (In addition, when the imaging unit 2b is not attached, it is not possible to display even if the scopes 3C and 3D are connected.) Incidentally, the light source connector 7A, 7B, 7E, 7 in each scope 3
E and 7E are light guide connectors in this embodiment,
A connector for air and water supply is provided, and the connector receiver 13
Also has a structure that can connect these.

The internal configuration of each of the scopes 3A, 3B, 3C, 3D, 3E is shown in FIGS. 3, 4, 5, 6 and 7. Each scope 3 is a light guide that transmits illumination light.
15, the illumination light supplied from the light source unit 16 in the control device 2a to the incident end face is transmitted to the emission end face side, and the front subject side is illuminated via the light distribution lens 17 arranged on the front face of the emission end face. I can do it.

Further, in each scope 3, an objective lens 18 for image formation is arranged at the tip of the insertion section 5. The focal plane of the objective lens 18 has a field-sequential type or a color mosaic type electronic scope.
In 3A or 3B, the CCD 19 is arranged, while in the fiberscope 3E or the TV camera-equipped fiberscope 3C or 3D equipped with the TV camera 11C or 11D, the image guide 20.
Is arranged so that the incident end face of is exposed.

An eyepiece lens 21 is arranged so as to face the exit end face of the image guide 20. However, in the fiberscope 3E, the eye can be brought close to the eyepiece 9 for observation with the naked eye. On the other hand, a frame-sequential TV camera 11C or a color mosaic TV on the eyepiece 9 of the fiberscope 3E.
In the case where the camera 11D is mounted, it faces the eyepiece lens 21 (via an imaging lens (not shown)).
CCD22 is arranged. A color mosaic filter 23 is arranged in front of the image pickup surface of the CCD 19 or 22 used in the color mosaic electronic scope 3B or the color mosaic TV camera 11D. CCs that form the imaging means
D19 or 22 photoelectrically converts the optical image formed on the imaging surface,
After being amplified by the preamplifier 24, it is transmitted to the signal connector 8 (representing 8A, 8B, 8C, 8D) side via the signal transmission line, and then passed through the signal connector receiver 13 to which the connector 8 is connected. It is input to the video processor side as a signal processing system as shown in FIG.

When a scope (for example, 3A) is connected as shown in Fig. 3, the type signal generation circuit (scope
3A, 3B, 3C and 3D are provided with 27A, 27B, 27C and 27D type signal generating circuits, respectively. ), The discriminating circuit 28 discriminates, and in the case of the frame-sequential scope 3A or 3C, the contact a side is switched on as shown in FIG.
When the contact a side is switched to be turned on, the drive signal from the frame sequential driver 30a passes through the switch 29,
Applied to CCD19 (in the case of scope 3A) to read signals from CCD19. The signal read from the CCD 19 is the switch 29
And is input to the frame sequential process circuit 31a to generate R, G, and B primary color signals, which are input to the signal conversion output circuit 32. This signal conversion output circuit 32 outputs an NTSC composite video signal from the NTSC output terminal 33, and
An RGB signal is output from the output terminal 34.

By the way, the mosaic type control device unit 2b which can be mounted by being inserted into the mounting opening 36 provided on the rear surface side of the control device 2a.
Inside, there is a driver 30b and a mosaic process circuit 31b.
And a timing generator 37b.

When the mosaic type control device unit 2b is attached to the mounting port 36, the terminals facing the control device 2a side and the unit 2b side are electrically connected as shown in FIG.

Then, when the control device unit 2b is mounted,
The control device 2a is ready for use in the mosaic type scopes 3B and 3D. That is, the control device 2a holds the normal input signal side switch 29 in the state where the contact b side is turned on, and also holds the switch 39 in the signal conversion output circuit 32 in the state where the contact b side is turned on. Therefore, mosaic scope 3B
Alternatively, when 3D is connected, a drive signal is applied from the driver 30b to the CCD 19 via the switch 29, and the read signal is passed through the switch 29 to the mosaic process circuit 31.
The luminance signal Y and the color difference signals RY and BY are input from the mosaic type process circuit 31b, and the signals Y and R-
Y and BY are output as NTSC composite video signals or RGB color signals through the signal conversion output circuit 32.

By the way, the structures of the frame sequential process circuit 31a and the mosaic process circuit 31b are as shown in FIG. 8 and FIG.

The signal input through the preamplifier 24 passes through the variable gain amplifier 41, is subjected to color tone adjustment by the color tone adjustment circuit 42, and is then input to the sample hold circuit 43. After being sample-held here, it is γ-corrected by the γ-correction circuit 44 and converted into a digital amount by the A / D converter 45. After that, the signals picked up under the field sequential illumination of R, G, B through the multiplexer 46 which is switched by the signal of the timing generator 37a, the R frame memory 47R, the G frame memory 47
It is written in the G and B frame memory 47B. The signal data written in each of the frame memories 47R, 47G, and 47B are read out at the same time, and the D / A converter 48 outputs analog color signals.
It is converted into R, G, B and output to the above-mentioned matrix circuit 72 side.

On the other hand, the signal input to the color mosaic type process circuit 31b passes through the variable gain amplifier 51 as shown in FIG. 9 and then passes through the luminance signal processing circuit 52 to generate the luminance signal Y. The color signal reproduction circuit 53 also receives the color difference signals RY,
BY is time-sequentially generated for each horizontal line, and white balance is compensated by the white balance circuit 54. One is directly delayed by the analog switch 55 and the other is delayed by one horizontal line by the 1H delay line 56, and then analog switch is performed. Color difference signals R-Y and B-Y are obtained by the switching signal of the timing generator 37b.

The timing generators 37a, 37b apply signals to the drivers 30a, 30b, respectively, and control so as to perform signal processing in synchronization with the drive pulse used for signal reading from the CCD 19 or 22. In this case, in the frame-sequential signal processing system, the timing generator 37a is the rotational position sensor 5a.
The output of 9 outputs a timing signal synchronized with the rotation of the rotary filter 61.

The light source unit 16 including the rotary filter 61 has a structure as shown in FIG.

That is, between the white lamp 62 and the lens 63 facing the lamp 62, the rotary filter 61 which is rotationally driven by the motor 64 is arranged. This rotary filter 61 is provided with a fan-shaped opening in a disc-shaped filter frame 65, and R, G, B color transmission filters 66R, 66G, 66B are provided, and, for example,
A white illumination hole 67 is provided in the light-shielding portion between the R and B color transmission filters 66R and 66B. This hole 67 is rotatably mounted with a midpoint of a line segment connecting the hole 67 and the center as a pivot point. The light-shielding plate 68 provided allows light to be shielded.

That is, the shading plate 68 is a filter frame by the motor 64.
When 65 is rotated, the direction connecting the center position of the disc-shaped light-shielding portion and the pivot point coincides with the radial direction due to the centrifugal force, as shown in FIG. It becomes a state of being blocked by, and normal R, G, B frame sequential illumination can be performed.

On the other hand, when stopped, the centrifugal force does not work, so that the light shielding plate 68 is retracted from the hole 67 by gravity as shown in FIG.

When the filter frame 65 is stopped, the hole 67 has a light source lamp.
The position is controlled so that it is on the optical axis connecting the lens 62 and the lens 63. C for position control or R, G, B plane sequence
In order to detect the timing of reading the CD signal, the filter frame 65 is provided with a number of holes 68, 68 ...
A rotary encoder that forms a position detection sensor 59 by arranging a light emitting element and a photo sensor 69 on both sides of the plate surface of 5 is formed. In FIG. 10, the photo sensor 69 is attached to the tip of the sensor attachment plate 70.

The output of the position detection sensor 59 is input to the timing generator 37a and also to the rotation / stop control circuit 71 to control rotation and stop. Then, in the stopped state, the light of the lamp 62 passes through the hole 67, is condensed by the lens 63, and supplies white illumination light to the connector connected to the connector receiver 13.

Further, when it is detected from the identification circuit 28 that the frame-sequential scope 3A or 3C is connected to the rotation / stop control circuit 71, a rotation command signal is input, the motor 64 is rotated, and the frame-sequential control is performed. Turn on the lighting.

 The configuration of the signal conversion output circuit 32 is shown in FIG.

The RGB output signals of the frame-sequential process circuit 31a are converted by the matrix circuit 72 into the luminance signal Y and the color difference signals RY, B-.
Converted to Y and NTSC encoder 74 via switch 39
Is also input to the inverse matrix circuit 75.

The signal input by the NTSC encoder 74 is NTSC
It is converted into a composite video signal and output from the output terminal 33. The signal input to the inverse matrix circuit 75 is converted into an RGB signal, and the RGB signal is output from the output terminal 34 via the buffer 76.

By the way, the structure of the mounting port 36 and the connecting mechanism portion of the control device unit 2b mounted in this mounting port 36 is shown in FIG.

An end of the board 81 faces an end of the controller unit 2b on the attachment / detachment side, and connection lands 82, 82, ..., 82 are provided at this end. Both upper and lower surfaces and the other end side of this substrate 81 are covered with a housing 83.

On the other hand, lead metal fittings 84, ..., 84 (only the upper one is shown in FIG. 12) for connection are provided in the deep portion of the mounting port 36 of the control device 2a, and the land 82 ,. , 82 are clamped from both upper and lower sides as shown in FIG. 13 to electrically connect and maintain the mounted state.

In addition, when this unit 2b is installed, the unit 2b
May be flush with the rear surface of the control device 2a, or may be in a slightly projected state or in a slightly retracted state.

According to the first embodiment configured in this manner, when the initial purchase is made, and when the bundled purchase is not possible due to the budget, a frame-sequential scope device, that is, a frame-sequential scope 3A or 3C (or both), It can be used by determining the frame sequential control device 2a and the monitor 4.

Then, by asking for the controller unit 2b, any scope can be used. Further, the unit 2b can be easily mounted by inserting it into the mounting port 36.

 FIG. 14 shows a second embodiment of the present invention.

In this embodiment, the mosaic type control device unit 92b can be mounted on the side surface of the frame sequential control device 92a.

In this case, as shown in FIG. 15, the connector 92 is provided on the side surface of the control device 92a, while the unit 92b is provided.
A connector that can be attached to and detached from the connector receiver 93 is provided on one surface. By mounting the connector on the connector receiver 93, both can be electrically connected and can be held in the mounted state.
Except for the connection portion, it is the same as in the first embodiment.

The operation and effect of this embodiment are almost the same as those of the first embodiment. The outer shape of the unit 92b may be adapted to the side surface shape of the control device 92a.

 FIG. 16 shows a third embodiment of the present invention.

In the first embodiment, the unit 2a can be mounted on the rear surface of the control device 2a, but in this embodiment, the mounting port 10 is provided on the front surface of the control device 102a, for example, at a position near one side.
3 is provided so that the control unit 102b can be attached to the attachment port 103.

Also, in this embodiment, the rear surface of the unit 102b (the surface exposed to the panel side of the control device 102a) when the unit 102b is mounted is made to be the same surface as the panel surface of the control device 102a, so that the appearance is I try not to touch you.

The operation and effect of this embodiment are substantially the same as those of the first embodiment.

 FIG. 17 shows a fourth embodiment of the present invention.

The both-sequential control device 132a has a light source connector receiver 133a and signal connector receivers 134a and 134b, and via the signal connector receiver 134a, a drive signal output from a driver 135a passes through the connector receiver 134a. The input signal is input to the signal conversion output circuit 137a through the frame sequential process circuit 136a, and the NTSC output end 138a outputs the composite video signal and the RGB output end 139a outputs the RGB signal.

Further, the light source unit 141 inside the light source connector receiver 133a is
It is composed of a white lamp 142, a filter unit 143 movable in the direction of arrow A, a condenser lens 144, and a diaphragm device 145.

In the filter unit 143, a rotary filter 148 which is rotationally driven by a motor 147 can move on a rail 149, and in the state shown in FIG. 17, the rotary filter 148 is interposed in the optical path to perform frame sequential illumination. But on the rail 149 (No. 17
(Downward in the figure), the rotary filter 148
Can be retracted from the optical path and white illumination can be performed.

The movement of the filter unit 143 is performed by starting the movement control circuit 152 controlled by the controller 151.

The diaphragm device 145 is composed of a diaphragm plate 153 and a drive unit 154 that controls the opening of the diaphragm plate 13.
Can be controlled via the aperture control unit 155.

The controller 151 can send and receive signals to and from the panel unit 156a, and can perform hue setting, freeze operation, and the like.

The frame sequential process circuit 136a has the following configuration.

The signal input from the CCD 19 of the frame sequential electronic scope 3A through the preamplifier 24 is variably adjusted in hue through the hue circuit (HUE circuit) 161, and the sample hold circuit 162 samples and holds the signal for each pixel. It Then γ
After being .gamma.-corrected by the correction circuit 163, it is converted into a digital amount by the A / D converter 164 and is alternately stored in the RGB frame memories 166 and 167 via the switch 165 for each one frame.
These RGB frame memories 166 and 167 are R frame memories,
It consists of a G frame memory and a B frame memory, and by writing alternately to these two RGB frame memories 166 and 167, the R, G and B image data of the PGB frame memory on the side where writing is not performed are read out at the same time and alternated. It is input to the D / A converter 169 via the switch 168 that can be switched to, converted into an analog RGB signal, and input to the signal conversion output circuit 137a.

The RGB signal is converted into a luminance signal Y and color difference signals RY and BY by a matrix circuit 171, and is input to a superimposing circuit 173 via a motion switch 172 having three circuits and two contacts. The superimposing circuit 173 superimposes character information and the like. Then, for the luminance signal Y in the signal that has passed through the superimposing circuit 173, it is input to the NTSC encoder 176 after being passed through the contour emphasizing circuit 174 and the line interpolating circuit 175, and the inverse matrix circuit 177 is also provided. Entered in. The contour enhancement circuit 174 performs contour enhancement. In addition, the line interpolation circuit 175
If the number of CCD pixels is small and the number of display scanning lines is not sufficient as it is, or if the display image is rough, the number of scanning lines is multiplied by an integer to generate scanning lines interpolated between adjacent scanning lines. .

The signal input to the NTSC encoder 176 is converted into an NTSC composite video signal and output from the output end 138a. Further, in the inverse matrix circuit 177, a buffer 178 which is converted into RGB3 primary color signals and forms a drive circuit.
An RGB signal is output from the RGB output terminal 139a via each of the.

By the way, the hue setting by the hue circuit 161 can be controlled via the controller 151, and the controller 151 controls the hue according to the signal of the hue setting switch by the panel unit 156a. This hue setting can be displayed on the panel display, such as the hue setting level and the on / off state of the hue switch. Further, the sampling timing of the sample hold circuit 162 is controlled by the controller 151, and this timing corresponds to both prime numbers.

In addition, the switches 165, before and after the RGB frame memories 166, 167,
The controller 168 is interlocked and switched by the controller 151, and when one frame memory is in the write mode, the other frame memory is in the read mode.

Further, the controller 151 controls the superimposing operation by the superimposing circuit 173 depending on whether or not to output the character data. Further, when the frame-sequential electronic scope 3A is connected, the controller 151 performs identification by an identification circuit (not shown) and switches the switch so as to perform signal processing corresponding to the electronic scope 3A side. For example, the signal of the switching control line 1 is set to "H", the filter unit 143 is interposed in the optical path through the movement control circuit 152 as shown in FIG. 17, and the switch 181 is turned on the contact a side. The output of the γ correction circuit 163 is guided to the control unit 155 via the integration circuit 182, and the diaphragm device 145 controls the diaphragm amount of the illumination light at the average level for one frame of the γ correction circuit 163. Further, the switch 172 at the output stage of the matrix circuit 171 is switched so that the contact a side is turned on, and the switch 18
3 is turned on and the synchronization signal generator (Sync generator) 184
The line interpolation is performed by the synchronization signal of.

By the way, the mosaic type control device unit 132b which can be integrated by being inserted into the mounting opening of the frame sequential control device 132a or the expansion unit 185 or the like guides the signal inputted through the signal connector receiver 134b to the mosaic type process circuit 136b. . The process circuit 136b allows the luminance signal Y and the color difference signal R to be obtained.
-Y, B-Y are output, and the luminance signal Y and the color difference signal R-
Y and BY are led to the terminal 192b.

The signal inputted to the mosaic type process circuit 136b is inputted to the color difference signal reproducing circuit 196 while the luminance signal Y is generated through the luminance signal processing circuit 195, and the color difference signals RY and BY are set to 1 It is generated in time series for each horizontal line. The color difference signals R-Y and B-Y are white-balance-compensated by the white-balance circuit 197. One of them is directly input to the analog switch 198, and the other is delayed by one horizontal period by the 1H delay line 199 and input to the analog switch 198 '. . Both of these switches 198 and 198 'are synchronous signal generating circuits 2
The color difference signals R-Y and B-Y are separated by switching by 01 or the controller 202. Then, the luminance signal Y and the color difference signals RY and BY are converted into digital signals by the A / D converter 203 and written in the frame memory 204. When the image data of the frame memory 204 is read, it is converted back into an analog signal by the D / A converter 205, and the terminal 192b
Is applied to

By the way, in this mosaic type control unit 132b,
TV camera 11 as shown in Fig. 17 on the fiberscope 3E
The scope 3D 'equipped with D'is connected for use.

This TV camera 11D 'has a driver 207 and a synchronization circuit 208.
Each of the HD (horizontal drive), VD (vertical drive), and (CLK) clock signals is input from the Sync generator 201, and the driver 207 is driven in synchronization with these signals. By outputting a drive signal from the driver 207 to the CCD 22, the image of the end face of the image guide 20 formed through the eyepiece lens 19 and the image forming lens 209 is photoelectrically converted, and input to the process circuit 136b through the preamplifier 24. Let

The Sync generator 201 applies a signal to the controller 202 and controls the HUE or freeze in synchronization with this signal. Further, this Sync generator 201 applies each signal of HD, VD, and CLK to the terminal 211b, and inputs it to the Sync generator 184 in the frame sequential control device 132a via the terminal 211a connected to this terminal 211b. By taking in these signals, the HUE is controlled by a control signal synchronized with the signal input from the mosaic type TV camera 11D ′ side to the mosaic type process circuit 136b by the switch operation of the panel unit 156a of the frame sequential control device 132a.
Change, freeze on, off, etc. can be performed.

By mounting the unit 132b on the control device 132a as shown in FIG. 17, any of the frame sequential electronic scope 3A, the mosaic type TV camera-equipped fiberscope 3E ′ and the fiberscope 3E can be used. Also, a frame sequential control device
By operating the panel unit 156a of the 132a, it is possible to set the HUE and turn on / off the freeze in the mosaic signal processing system as well as in the frame sequential signal processing system. Therefore, the mosaic process circuit 13 is formed by connecting the terminals of the control device 132a and the unit 132b that face each other.
Not only is the output terminal of 6b input, but various control signals are transmitted and received.

As shown in FIG. 17, in the mounted state of the unit 132b, the luminance signal Y of the luminance signal processing circuit 195 of the mosaic process circuit 136b passes through the integrating circuit 223b, the contact b of the switch 181 turned on, and the diaphragm device 145. Control the amount of aperture. In addition, a HUE control signal from a HUE setting switch (not shown) of the panel unit 156a is input to the controller 151, and the controller 151 passes the HUE control line to the controller 20.
Entered in 2. This controller 202 sends this signal to D /
The signal is input to the A converter 224, converted into an analog signal, and then applied to the white balance circuit 197 to control the HUE level.

Further, a freeze operation signal of a freeze switch (not shown) in the panel unit 156a is input to the controller 151, and this controller 151 is input to the controller 202 via the freeze control line, and the freeze control signal is applied to the frame memory 204 via this controller 202. To do.

The output signal of the mosaic process circuit 136b is applied to the contact b of the analog switch 172 via the output signal line, passes through the contact b that is turned on, and is input to the super-impose circuit 173.

When the unit 132b is attached, the switch for performing mosaic type signal processing is switched by the switching signal V / F transmitted by the switching control line 1.

When the unit 132b is connected and the frame sequential electronic scope 3A is connected, the controller 151 performs the frame sequential signal processing and the frame sequential illumination according to the type signal.

The Sync generator 201 also has a function of controlling each circuit by a connection (not shown).

 FIG. 18 shows a fifth embodiment of the present invention.

In this embodiment, the control device 232a outputs the output of the frame sequential process circuit 233a, that is, the RGB signal to the signal conversion output circuit 234.
And the RGB signal is output from the RGB output terminal 235. The process circuit 233a is the HUE circuit 1 in FIG.
This is a configuration with 61 removed.

On the other hand, the signal conversion output circuit 234 is the signal conversion circuit 137 shown in FIG. 17 in which an A / D converter 236, a frame memory 237, and a D / A converter 238 are provided instead of the superimposing circuit 173. Yes, the output terminals 241 and 242 output NTSC composite video signals and RGB signals, respectively.

The frame memory 237 has a luminance signal Y and a color difference signal R.
-Y, BY Frame memory for these signals
It has a capacity to store Y, RY, and BY for one frame.

The two RGB frame memories 166 and 167 in the frame sequential process circuit 233a can display a still image by a freeze control signal output from the controller 243.

Further, the controller 243 is adapted to apply a freeze control signal to the frame memory 237 so that the signal passed through the signal conversion output circuit 234 can be frozen.

Each of the freeze control signals is performed based on the signal input to the controller 243 in accordance with the operation of the freeze switch of the panel section 244. Further, the controller 243 controls lighting of LEDs and the like forming the display portion of the panel portion 244.

The controller 243 controls the timing of the drive signal of the driver 246, the timing of the sample hold circuit 162, the switches 165, 16 before and after the RGB frame memories 166, 167 based on the synchronization signal input from the sync generator 245.
Control the switching of 8.

The output signal of the γ correction circuit 163 of the frame sequential process circuit 233a is input to the control unit 155 via the integration circuit 182 and the switch 181, and the diaphragm device 145 controls the illumination light amount of the light source unit 141.

Line interpolation circuit 1 forming the signal conversion output circuit 234
The 75 operates in synchronization with the signal of the Sync generator 245.

By the way, the mosaic type control device unit 232b mounted on the control device 232a has a signal connector receiver 134b, and the signal connector receiver 134b has the connector of the mosaic TV camera 11D 'shown in FIG. I am able to wear it. The TV camera 11D 'has a switch 2
47 is provided. This switch 247 is, for example, freeze
It enables ON / OFF operations such as release and VTR recording. However, the switch operation of the switch 247 is input to the unit 232b side via the connector receiver 134b. Then, the operation signal is input from the unit 232b to the controller 243 in the control device 232a via the connection terminal. In accordance with the input operation signal, for example, in the case of a freeze operation, a freeze control signal is applied to the frame memory 237.

By the way, the mosaic process circuit 23 in the unit 232b
3b is a configuration in which the A / D converter 203 and the subsequent components are excluded from the process circuit 136b in FIG.
95 and the signals Y, R−Y, output from both switches 198, 198 ′.
BY is input to the switch 172 forming the signal conversion output circuit 234.

The HUE setting for the mosaic process circuit 233b is output as a HUE control signal from the panel unit 244 via the controller 243, and this HUE control signal is a D / A converter.
It is performed by being converted into an analog control signal by 251 and applied to the white balance circuit 197. Also,
When the mosaic type TV camera 11D 'is connected, the luminance signal Y of the luminance signal processing circuit 195 passes through the integrating circuit 223b and is integrated for one frame period to generate an average level signal. The aperture amount by the aperture device 145 is controlled through 181.

The control of the aperture amount and the like by the frame sequential process circuit 233a or the mosaic process circuit 233b can be switched according to a type signal (not shown) in the connected scope or TV camera. Further, the type signal generating means is provided only for one of the color image pickup systems, and the switch is switched only when the type signal is inputted (usually set to the other color image pickup system side). Is also good.

In this embodiment, there are two signal output systems for signals that have passed through the frame sequential process circuit 233a, and these two can output signals at the same time. Therefore, the signal output from the output end 235 and the signal output from the output end 241 or 242 can be input to a combining circuit or the like to be displayed as a parent-child screen on a single color monitor, or the same on the left and right. It can also be displayed in size.

Since the frame memory 237 is a frame memory for one frame, intermittent reading is performed. By providing two frame memories, it is possible to read out intermittently.

Although the unit side is a mosaic type in each of the above-described embodiments, the unit may be a frame sequential type and the control device to which this unit is mounted may be a mosaic type.

[Effect of the Invention] As described above, according to the present invention, the control device having the signal processing means corresponding to one of the color image pickup systems is provided with the unit mounting means having the signal processing means for the different color image pickup systems. Since the unit is provided with means for transmitting signals when it is attached, the unit has an effect that it can be used for any color imaging type scope.

[Brief description of drawings]

FIGS. 1 to 13 relate to a first embodiment of the present invention.
FIG. 1 is a perspective view showing a schematic outer shape of a control device according to the first embodiment, FIG. 2 is a perspective view showing an entire endoscope device equipped with the first embodiment, and FIG. 3 is a signal processing system of the control device. Block diagram, 4th
Fig. 5 is a block diagram of a color mosaic electronic scope, Fig. 5 is a block diagram of a fiberscope equipped with a frame sequential TV camera, Fig. 6 is a block diagram of a fiberscope equipped with a mosaic TV camera, and Fig. 7 is Fig. 8 is a block diagram of a fiberscope, Fig. 8 is a block diagram of a frame sequential process circuit, Fig. 9 is a block diagram of a mosaic process circuit, Fig. 10 is a perspective view showing the configuration of a rotary filter, and Fig. 11 is a rotating state. FIG. 12 is a perspective view showing a part of the rotary filter in FIG. 12, FIG. 12 is an explanatory view showing a mounting portion of the control device and a connecting portion of the control device unit that can be stored in this mounting port, and FIG. 13 is a mounting state. FIG. 14 is a side view of the connecting portion, FIG. 14 is a schematic perspective view of the second embodiment of the present invention,
FIG. 15 is a schematic perspective view showing the second embodiment without connecting the control unit, FIG. 16 is a schematic perspective view showing the third embodiment of the present invention, and FIG. 17 is a fourth embodiment of the present invention. And FIG. 18 is a block diagram showing a fifth embodiment of the present invention. 1 ... Endoscope device 2a ... Sequential control device 2b ... Mosaic control unit 3A ... Sequential electronic scope 3B ... Color mosaic electronic scope 3C ... Sequential fiberscope with TV camera 3D ...... Fiber mosaic with color mosaic TV camera 3E ...... Fiberscope 7A, 7B, 7E ...... Light source connector 8A, 8B, 8C, 8D ...... Signal connector 11C ...... Frame sequential TV camera 11D ...... Color Mosaic TV camera 12 …… Panel 13 …… Light source connector receiver 14 …… Signal connector receiver 36 …… Mounting port, 81 …… Board 82 …… Land, 84 …… Lead fitting

Front page continued (72) Inventor Hisao Yabe 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Jun Yoshinaga 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Kogyo Co., Ltd. (72) Inventor Shinichi Kato 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Industry Co., Ltd. (72) Inventor Takeaki Nakamura 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Industry Co., Ltd.

Claims (1)

[Claims] 1. A frame-sequential process circuit for converting a video signal from a frame-sequential solid-state image pickup device into three primary color signals, and a video signal from a mosaic-type solid-state image pickup device provided with a color mosaic filter as a luminance signal. Any one of a mosaic type process circuit for converting into a color difference signal, and a signal conversion output for performing signal processing so that the video signal converted by either of the process circuits can be displayed in color on the display means. In the main body of the endoscope control device having a circuit, there is provided another process circuit which the main body of the endoscope control device does not have, of the both process circuits, An endoscope control device comprising an additional control device unit connectable to a main body.