JP2004321608A - Endoscope system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an endoscope system having a power supply connector and an electric connector usable for either case of an existing one and a different one by securing compatibility. <P>SOLUTION: This endoscope system is provided with a connector body whose power supply connector and electric connector 13B are provided in the different directions. An endoscope 2B incorporating a CCD 17 drives the CCD 17 by a drive signal from a CCD drive circuit 43 incorporated in a processor 4, processes its output signal in the side of the processor 4 and is provided with a connector body 11A whose power source connector and electric connector 13A are provided in the same direction therefor. An endoscope 2A incorporating the CCD 17 drives the CCD 17 by the drive signal from the CCD drive circuit 43 incorporated in the light source device 3, and is constituted to perform a part of the processing of its output signal in the side of the light source device 3 so as to secure the compatibility for being usable the endoscope 2B having the existing connector body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an endoscope system that is compatible with an endoscope having an existing connector body.
[0002]
[Prior art]
In recent years, by inserting an elongated insertion portion into a body cavity, endoscopes that can observe a subject deep in the body cavity without requiring an incision and can perform therapeutic treatment using a treatment tool as necessary are widely used. Used.
[0003]
Recently, an endoscope system equipped with an image pickup device such as a CCD at the front end or the rear end of the insertion section and employing an electronic endoscope for taking and observing a subject in a body cavity with the use of the image pickup device makes it easy to record images and the like. Because it can be done, it is widely spread.
As a conventional example of such an endoscope system, there is one disclosed in, for example, JP-A-2002-34912.
[0004]
In this conventional example, a light source device and a processor as a signal processing device for performing signal processing on an image sensor are separate bodies.
The electronic endoscope and the optical endoscope employ a connector that allows a television camera mounted on the electronic endoscope and the optical endoscope to be connected to a connector receiver of the light source device. (Endoscope mounted with TV camera).
[0005]
[Patent Document 1]
JP-A-2002-34912
[0006]
[Problems to be solved by the invention]
However, the conventional example described above can only deal with an endoscope provided with a connector connectable to a light source device. For this reason, for example, there is a disadvantage that it cannot be used in the case of an existing electronic endoscope in which the light source connector and the electric connector are provided in different directions from the connector body.
That is, there is a disadvantage that the use of the endoscope when the electric connector is connected to the light source device is restricted.
[0007]
(Object of the invention)
The present invention has been made in view of the above points, and an electric connector is provided in the same direction as a light source connector, an endoscope connectable to a light source device, and an electric connector is provided in a different direction from the light source connector. It is an object of the present invention to provide an endoscope system that can be used with any endoscope that can be connected to an external device such as a processor.
[0008]
[Means for Solving the Problems]
A light source device having a light source that emits illumination light for irradiating a subject,
A first light source connector having a predetermined shape into which the illumination light emitted by the light source is incident;
A first endoscope including a first connector main body in which the first light source connector is extended in a predetermined direction;
A second light source connector having a shape similar to that of the first light source connector, and receiving the illumination light emitted by the light source;
A second endoscope including a second connector main body in which the second light source connector extends in a predetermined direction;
A light source connector receiver provided on the light source device for optically connecting the connected light source connector to the light source device by selectively connecting the first and second light source connectors to the light source device;
A first electric component provided in the first endoscope that performs an operation for executing a predetermined function of the first endoscope;
A second electrical component provided in the second endoscope that performs an operation for performing the same predetermined function as the first endoscope;
A first electrical connector that is provided to extend from the first connector body in a direction different from the first light source connector, and is electrically connected to the first electrical component;
A first electrical connector receiver provided on the external device for connecting the first electrical connector to an external device separate from the light source device;
A second electrical connector provided to extend from the second connector body in the same direction as the second light source connector, and electrically connected to the second electrical component;
A second electrical connector receiver provided on the light source device for connecting the second electrical connector to the light source device with connection of the second light source connector to the light source connector receiver;
Provided in the external device for transmitting or receiving a signal relating to the function of the first electric component with the first electric component via the first electric connector connected to the first electric connector receiver; A first electrical circuit,
According to the connection of the second light source connector with the light source connector receiver, the second light source connector is connected to the second electric component via the second electric connector connected to the second electric connector receiver. A second electric circuit provided in the light source device for transmitting or receiving a signal related to the function of the second electric component,
A first endoscope having a second connector body in which the electrical connector is provided in a direction different from that of the light source connector, and a second endoscope in which the electrical connector is provided in the same direction as the light source connector. It can be used with any of the mirrors.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First Embodiment)
1 and 2 relate to a first embodiment of the present invention. FIG. 1 shows an entire configuration of an endoscope system according to the first embodiment. FIG. 2 shows a light source device and a connector receiver of a processor. FIG. 2 shows a peripheral portion of a connection portion when a type 1 connector and a type 2 connector are connected. FIG.
[0010]
As shown in FIG. 1, an endoscope system 1 according to a first embodiment of the present invention has a first endoscope having first and second connector bodies 11A and 11B (see FIG. 2) having different shapes, respectively. A light source device 3 for supplying illumination light to the mirror 2A and the second endoscope 2B, the first endoscope 2A and the second endoscope 2B connected thereto, and an external device separate from the light source device 3 The apparatus includes a processor 4 that performs image processing, and a monitor 5 that receives an image signal output from the processor 4 and displays an image corresponding to the image signal.
[0011]
The first and second endoscopes 2A and 2B basically differ only in the shape of the connector body.
Each of the first endoscope 2A and the second endoscope 2B has an elongated insertion portion to be inserted into a body cavity, an operation portion provided at a rear end of the insertion portion, and a side portion of the operation portion. The universal cord 8 (see FIG. 2) is provided with first and second connector bodies 11A and 11B at the ends of the universal cord 8, as shown in FIG.
[0012]
As shown in FIG. 2 (A), the first endoscope 2A has a light source connector 12 and an electric connector portion 13A adjacent to the front end face of the first connector body 11A. . That is, the first connector main body 11A is provided with the light source connector 12 and the electrical connector 13A on the front end face thereof so as to protrude (extend) in the same front direction.
[0013]
On the other hand, in the second endoscope 2B, as shown in FIG. 2B, a light source connector 12 is provided on the front end face of the second connector main body 11B, and An electrical connector 13B is provided. That is, the electrical connector 13B is provided on the second connector main body 11B so as to protrude in a direction different from the direction in which the light source connector 12 protrudes (extends).
[0014]
Note that both the first endoscope 2A and the second endoscope 2B have the same light source connector 12 and a light guide connector 14 and a fluid connector 15. As shown in FIG. 1, both the first endoscope 2 </ b> A and the second endoscope 2 </ b> B have a light guide 16 inserted therein, and connect the connector main body 11 </ b> A or 11 </ b> B (the light source connector 12) to the light source device 3. The illumination light is supplied from the light source device 3 to the end face of the light guide 16 of the light guide connector 14 and transmitted by the light guide 16 and fixed to the illumination window at the tip of the insertion portion. The illumination light is emitted from the surface to illuminate a subject such as an affected part in a body cavity.
[0015]
An objective lens (not shown) is attached to an observation window provided adjacent to the illumination window, and forms an optical image of the illuminated subject. At this image forming position, for example, a charge-coupled device (abbreviated as CCD) 17 is disposed as a solid-state image sensor as an electric component having a predetermined function that the endoscopes 2A and 2B have, specifically, an image pickup function. The optical image is photoelectrically converted.
[0016]
The light source device 3 is built in the first endoscope 2A, a power supply circuit 21 that generates a DC power supply from a commercial power supply, a light source circuit 22 that generates illumination light using the DC power supply generated by the power supply circuit 21. It drives the CCD 17 (as a first electrical component) and incorporates a patient substrate 23 having a signal processing pre-processing function for an image signal picked up by the CCD 17.
[0017]
2, a light source connector receiver 25 to which the light source connector 12 is detachably connected and an electric connector receiver 26 to which the electric connector 13A is detachably connected, as shown in FIG. It is provided. That is, a connector body receiver 27A to which the connector body 11A of the first endoscope 2A is detachably connected is provided.
[0018]
The power supply circuit 21 in the light source device 3 has an isolation circuit such as an insulating transformer (abbreviated as “F” in FIG. 1), and a commercial power supply supplied via a commercial power cable provided with a plug connected to the commercial power supply. A DC power supply for the secondary circuit, which is insulated from the power supply, is supplied to the light source circuit 22.
[0019]
Then, the light source circuit 22 is driven to turn on the lamp 31 such as a xenon lamp. The light of the lamp 31 is condensed by a condenser lens 32, and supplies illumination light to a light guide connector 14 mounted on (a light guide connector receiver of) the light source connector receiver 25 via a stop 33.
Further, the power supply circuit 21 uses a DC power supply for the patient circuit generated through an isolation circuit (abbreviated as “F” in FIG. 1) such as an insulating transformer insulated from both the secondary circuit and the patient circuit board (or the patient circuit). 23.
[0020]
The patient board 23 includes a clock generation circuit 41 that generates a reference clock CLK, a timing generation circuit 42 that generates various timing signals based on the clock CLK, and a CCD 17 that synchronizes with the timing signal from the timing generation circuit 42. A CCD drive circuit 43 for generating a CCD drive signal (drive signal) for driving the CCD, and an imaging signal output from the CCD 17 (built-in to the first endoscope 2A) to which the CCD drive signal has been applied is low noise. , A correlated double sampling (CDS) circuit 45 for extracting a signal component from the signal amplified by the preamplifier 44 and outputting a baseband signal, and a baseband conversion performed by the CDS circuit 45. An A / D conversion circuit 46 for A / D converting the converted signal and a CDS circuit 45 The brightness of the endoscope image displayed on the monitor 5 is automatically adjusted to an appropriate level by adjusting the phase control (abbreviated as PLL) circuit 47 for operating in the phase and the aperture of the diaphragm 33. A dimming circuit 48 that generates a dimming signal.
[0021]
The clock generation circuit 41 generates a reference clock CLK by dividing the oscillation output generated by using a crystal oscillator or the like by N (abbreviated as 1 / N in FIG. 1), supplies the reference clock CLK to the timing generation circuit 42, and It is also supplied to the processor 4 via a communication cable 50 connected to a communication cable connector 49 provided on the rear panel of the light source device 3 via an isolation circuit such as a coupler (this is also abbreviated as “F” in FIG. 1). I do.
[0022]
The timing generation circuit 42 supplies a timing signal necessary for the operation to the CCD drive circuit 43, CDS circuit 45, A / D conversion circuit 46, and dimming circuit 48.
The CCD drive circuit 43 is connected to a CCD drive signal output terminal (drive signal output terminal) T1 of the electric connector receiver 26, and a CCD drive signal of the electric connector 13A of the first endoscope 2A connected to the electric connector receiver 26. A CCD drive signal is applied to the CCD 17 via an input terminal (drive signal input terminal) T1a (via a signal line connected to the terminal T1a).
[0023]
The signal input terminal of the preamplifier 44 is connected to the imaging signal input terminal T2 of the electrical connector receiver 26. When the electrical connector 13A of the first endoscope 2A is connected to the electrical connector receiver 26, the electrical connector 13A is electrically connected to the output terminal of the CCD 17, and the imaging signal output terminal T2a provided on the electrical connector 13A and the imaging connector An imaging signal (of the CCD 17) is input to the preamplifier 44 via an imaging signal input terminal T2 connected to the signal output terminal T2a.
[0024]
The output signal amplified by the preamplifier 44 is supplied to the PLL circuit 47 in addition to the CDS circuit 45. The PLL circuit 47 receives the drive signal component in the image signal having actually shifted in phase by the output signal from the preamplifier 44 by the drive signal line and the output signal line of the CCD 17, and the sampling pulse for extracting the signal component by the CDS circuit 45. Timing (phase) adjustment.
[0025]
The output signal of the CDS circuit 45 is also supplied to a dimming circuit 48. The dimming circuit 48 compares the signal component with a reference brightness level by, for example, integrating a signal component at a cycle of several frames. The aperture amount of the diaphragm 33 is adjusted using the error signal in that case as a dimming signal. Then, the illumination light amount is automatically adjusted so that an image with appropriate brightness is always obtained.
[0026]
On the other hand, the processor 4 (as an external device separate from the light source device 3) includes a power supply circuit 51 for generating a DC power supply from a commercial power supply, and a DC power supply generated by the power supply circuit 51 for displaying an image. A video processing board 52 that performs processing for generating a video signal; a patient board (or patient circuit) 53 that drives the CCD 17 of the second endoscope 2B and performs pre-processing on an image signal captured by the CCD 17; Built-in.
[0027]
As shown in FIG. 2B, an electric connector 54b at one end of the electric cable 54 is detachably connected to the electric connector 13B on the front surface of the processor 4 as shown in FIG. An electrical connector receiver 55 is provided.
[0028]
The rear panel of the processor 4 is provided with a connector 56 to which the other end of the communication cable 50 is connected, which is connected to the connector 49 of the light source device 3 at one end. Is input, and the dimming signal generated on the processor 4 side can be sent to the light source device 3 side.
[0029]
The power supply circuit 51 has an isolation circuit such as an insulating transformer (abbreviated as “F” in FIG. 1), and is insulated from the commercial power supplied via a commercial power cable provided with a plug connected to the commercial power. A DC power supply for the secondary circuit is supplied to the video processing board 52.
[0030]
The power supply circuit 51 supplies a DC power supply for the patient circuit generated through an isolation circuit (abbreviated as “F” in FIG. 1) such as an insulating transformer insulated from the secondary circuit to the patient board 53.
[0031]
This patient board 53 has the same circuit except for the clock generation circuit 41 in the patient board 23 provided in the light source device 3. That is, the patient substrate 53 includes the timing generation circuit 42, the CCD drive circuit 43, the preamplifier 44, the CDS circuit 45, the A / D conversion circuit 46, the PLL circuit 47, and the dimming circuit 48.
[0032]
The clock CLK input from the light source device 3 via the connector 56 to which the communication cable 50 is connected is input to the timing generation circuit 42 of the patient board 53 via the isolation circuit. The timing generation circuit 42 generates various timing signals in synchronization with the clock CLK.
The timing generation circuit 42 supplies a timing signal necessary for the operation to the CCD drive circuit 43, CDS circuit 45, A / D conversion circuit 46, and dimming circuit 48.
[0033]
The CCD drive circuit 43 is connected to the CCD drive signal output terminal T1 'of the electric connector receiver 55, and the electric connector 13B of the second endoscope 2B is connected via the electric cable 54 as shown in FIG. When connected, the CCD 17 is supplied with a CCD drive signal via the electric cable 54 via the CCD drive signal input terminal T1b (see FIG. 1) provided on the electric connector 13B of the second endoscope 2B. .
[0034]
The signal input terminal of the preamplifier 44 is also connected to the imaging signal input terminal T2 'provided on the electric connector receiver 55. Then, an imaging signal from the CCD 17 built in the second endoscope 2B is input from the imaging signal output terminal T2b to the preamplifier 44 via the electric cable 54 and further via the imaging signal input terminal T2 '.
[0035]
Also in this patient substrate 53, the CCD 17 is driven in the same manner as described in the case of the light source device 3, and the same signal processing is performed on the output signal of the CCD 17. Then, a digital video signal is generated via the A / D conversion circuit 46, and the digital video signal is input to the video processing circuit 57 formed on the video processing board 52 via the isolation circuit.
[0036]
A digital video signal generated on the light source device 3 side via the communication cable 50 is also input to the video processing circuit 57. After performing processes such as color separation, γ correction, and contour enhancement, the video processing circuit 57 generates video signals of various types by the encoder and outputs them to the monitor 5.
[0037]
The video processing board 52 is provided with a timing generation circuit 58 for generating timing signals for performing various operations in the video processing circuit 57. The timing signal generated by the timing generation circuit 58 (more specifically, Supplies a video processing control signal to the video processing circuit 57.
The clock CLK generated on the light source device 3 side is supplied to the timing generation circuit 58 via the communication cable 50.
[0038]
In the endoscope system 1 of the present embodiment having such a configuration, both the light source device 3 and the processor 4 include a CCD drive circuit 43 for driving a CCD, a preamplifier 44 for performing pre-processing on a CCD output signal, and a CDS. By providing the circuit 45 and the A / D conversion circuit 46, it is possible to use either the first endoscope 2A or the second endoscope 2B.
[0039]
That is, when the second endoscope 2B having the existing connector main body 11B is used, the light source connector 12 is connected to the light source device 3 as shown in FIG. The CCD 17 incorporated in the second endoscope 2B is driven by a CCD drive signal from the CCD drive circuit 43 of the patient board 53 provided inside the processor 4 by being connected to the electrical connector receiver 55 of the processor 4 via the processor 54. I do.
[0040]
An image signal picked up by the CCD 17 is amplified by a preamplifier 44 of a patient board 53 provided inside the processor 4, and a signal component is extracted by a CDS circuit 45, converted into a baseband signal, and further A / D converted. After being converted into a digital video signal by the circuit 46, it is output to a video processing circuit 57 via an isolation circuit, converted into a standard video signal by the video processing circuit 57, and then output to the monitor 5. On the display surface of the monitor 5, an image of a subject such as an affected part in a body cavity captured by the CCD 17 is displayed as an endoscope image, and the operator observes the endoscope image displayed on the monitor 5 and performs an endoscope. Mirror examination, diagnosis, etc. can be performed.
[0041]
On the other hand, unlike the existing connector main body 11B, in the case of the first endoscope 2A provided with the connector main body 11A provided with the electric connector 13A at the same front end as the light source connector 12, the connector main body 11A is attached and detached. The CCD drive is performed by the CCD drive signal from the CCD drive circuit 43 formed on the patient board 23 provided inside the light source device 3 provided with the flexible connector receiver 27A, similarly to the case of the patient board 53 of the processor 4. (However, in this case, the CCD 17 is built in the first endoscope 2A).
[0042]
The imaging signal output from the CCD 17 is further converted into a digital video signal by an A / D conversion circuit 46 via a preamplifier 44 formed on the patient substrate 23 and the like.
[0043]
Then, the video signal is input to the video processing circuit 57 in the processor 4 via the isolation circuit and the communication cable 50, converted into a standard video signal by the video processing circuit 57, and then output to the monitor 5.
[0044]
As described above, according to the present embodiment, even in the case of the endoscope 2B including the existing connector main body 11B, the same applies to the first endoscope 2A including the connector main body 11A different from the existing connector main body 11B. An endoscope system capable of performing endoscopic examination and diagnosis can be realized.
[0045]
In other words, according to the present embodiment, the endoscope 2A having the connector main body 11A having a different shape from the existing connector main body 11B can be used in the endoscope 2B having the existing connector main body 11B. Can be realized.
[0046]
Therefore, compatibility can be ensured so that the existing endoscope 2B can be used effectively for endoscopy continuously, and even if the endoscope 2A is provided with a new connector main body 11A having a different shape from the existing connector main body 11B. A system that can be effectively used for endoscopy can be realized.
[0047]
(Second embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 shows a configuration of an endoscope system 1B according to a second embodiment of the present invention.
The endoscope system 1B differs from the endoscope system 1 of FIG. 1 in that, in addition to the function of the timing generation circuit 42 on the light source device 3 side, a timing signal (more specifically, a video signal) for controlling a video processing circuit 57 is provided. The timing generation circuit 42B also generates a processing control signal).
[0048]
Then, the video processing control signal is supplied to the video processing circuit 57 of the processor 4 via the communication cable 50 via the isolation circuit. For this reason, in the processor 4 of the present embodiment, the video processing board 52B has a configuration in which the timing generation circuit 58 provided in the video processing board 52 of FIG. 1 is not provided.
Other configurations are the same as those of the first embodiment.
[0049]
This embodiment is similar to the first embodiment except that the timing generation circuit 58 provided on the video processing board 52 generates the video processing control signal in the timing generation circuit 42 of the light source device 3. It works.
This embodiment has the same effects as the first embodiment, and also has the effect that the timing generation circuit 58 on the processor 4 side can be dispensed with and the circuit scale can be reduced.
[0050]
(Third embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 4 shows a configuration of an endoscope system 1C according to a third embodiment of the present invention. The present embodiment is adapted to an endoscope having a different number of pixels and the like.
In the first and second embodiments, the endoscopes 2A and 2B employ the CCDs 17 having the same number of pixels, but in the present embodiment, the endoscopes 2A having the CCDs 17a and 17b having different numbers of pixels and the like. And 2B.
[0051]
For this reason, in the endoscope system 1C shown in FIG. 4, the endoscopes 2A and 2B include not only the CCD 17i (i = a, b) built in each endoscope 2I (I = A, B). And a scope ID circuit 61i formed of a read only memory (ROM) storing information for driving the CCD 17i and scope ID data as information for appropriately performing signal processing.
[0052]
The scope ID circuit 61a is connected to the terminal T3a of (the electrical connector 26 of) the connector main body 11A by a signal line. The scope ID circuit 61b is connected to the terminal T3b of the electric connector 13B (of the connector main body 11B) by a signal line.
[0053]
The processor 4C in the present embodiment further includes a control board 63 having a CPU 62 as a control circuit for reading the scope ID data from the scope ID circuit 61i and performing corresponding control in the processor 4 of FIG. .
[0054]
The CPU 62 is connected to the scope ID data terminal of the light source device 3C via the scope ID data transmission line of the communication cable 50, and the scope ID data terminal is connected to a connector via an isolation circuit provided in the light source device 3C. It is connected to terminal T3 of (electric connector receiver 26) 27A.
[0055]
When the endoscope 2A provided with the detachable connector main body 11A is connected to the connector receiver 27A, the CPU 62 is electrically connected to the scope ID circuit 61a built in the endoscope 2A, and is written therein. Scope ID data can be read.
[0056]
The CPU 62 is connected to a terminal T3 'of the connector receiver 55 via an isolation circuit provided in the processor 4C.
When the endoscope 2B is connected to the connector receiver 55 via an electric cable 54 provided with a detachable electric connector 54b, the CPU 62 electrically connects to the scope ID circuit 61b built in the endoscope 2B. It can be connected and read the scope ID data written to it.
[0057]
The CPU 62 is connected to a timing generation circuit 42, a CCD drive circuit 43, and a preamplifier 44 via an isolation circuit provided in the processor 4C. The CPU 62 controls the CCD 17b based on scope ID data read from the scope ID circuit 61b. It controls timing control and amplification when driving.
[0058]
Similarly, the CPU 62 is connected to the light source device 3C via a control signal transmission line of the communication cable 50, and further within the light source device 3C via an isolation circuit, the timing generation circuit 42 of the patient board 23, the CCD drive The CPU 62 is connected to the circuit 43 and the preamplifier 44, and performs timing control and the like and control of amplification and the like when the CCD 17a is driven by the scope ID data read from the scope ID circuit 61a.
[0059]
The CPU 62 also sends the scope ID data read from the scope ID circuit 61a or 61b to the timing generation circuit 58 in the processor 4C, and the timing generation circuit 58 performs video processing in the video processing circuit 57C based on the ID data. An image processing control signal suitable for the CCD 17a or 17b is generated.
[0060]
That is, in the first and second embodiments, since the endoscopes 2A and 2B have the CCDs 17 of the same number of pixels, the timing generation circuit 58 sends a video control signal corresponding to the CCDs 17 to the video processing circuit 57. However, in the present embodiment, for example, since the CCDs 17a and 17b have different numbers of pixels, the timing and parameters for signal processing can be set in appropriate settings according to the number of pixels and the like.
FIG. 4 in the present embodiment shows power supply lines and terminals for supplying operation power to the CCDs 17a and 17b and the scope ID circuits 61a and 61b built in the endoscopes 2A and 2B.
[0061]
FIG. 5 shows a circuit configuration of the video processing circuit 57C.
As shown in FIG. 5, a digital video signal output from the patient board 23 or 53 is input to a Y / C separation circuit 70, where the digital video signal is separated into a luminance signal Y and a color difference signal CB / CR, and then an RGB matrix circuit. The RGB signals are converted into RGB signals by an RGB matrix 71 a constituting the 71.
[0062]
The RGB signals are input to a color matrix circuit 72 and also to a white balance detection circuit (abbreviated as WB detection in FIG. 5) 71b. The white balance detection circuit 71b detects the luminance level of the RGB signal and outputs the detected signal to the CPU 62 for white balance.
[0063]
Then, the CPU 62 adjusts (controls) a coefficient or the like to be converted into an RGB signal by the RGB matrix 71a based on the detected signal so as to achieve white balance.
[0064]
Also, the CPU 62 receives scope ID data and, for example, corresponds to the actual CCD 17i built in the endoscope 2I from which the scope ID data has been read out based on the scope ID data, and outputs the RGB signals by the RGB matrix 71a. Control the conversion. Further, it controls the timing generation circuit 58.
The timing generation circuit 58 supplies an appropriate signal processing timing signal corresponding to the number of pixels of the CCD 17i mounted on the corresponding endoscope 2I to each process of the video processing circuit 57C based on the input scope ID data. .
[0065]
The color matrix circuit 72 converts the RGB signals into the luminance signal Y and the color difference signals CB / CR again, and outputs the signals to the gamma correction circuit 73. The signal which has been γ-corrected by the γ-correction circuit 73 stores, for example, signal data for one frame by a frame memory (or a field memory) 74.
[0066]
The signal read from the frame memory 74 at a predetermined timing is input to the enlargement processing circuit 75, where the enlargement processing is performed. In this case, the CPU 62 controls the enlargement processing corresponding to the actual CCD 17i based on the scope ID data. That is, if the enlargement process is performed at the same enlargement ratio even when the number of pixels is different, the display size changes depending on the number of pixels and the like. Therefore, the enlargement process is performed at an appropriate enlargement ratio according to the number of pixels and the like.
[0067]
The luminance signal in the signal subjected to the enlargement processing is input to the character superimposing circuit 77 after the outline is emphasized by the outline emphasizing circuit 76, and the color difference signal CB / CR is not passed through the outline emphasizing circuit 76 and the character superimposing circuit 77. Is input to
When the contour is emphasized by the contour emphasizing circuit 76, the CPU 62 also controls the amount of contour emphasis corresponding to the actual CCD 17i based on the scope ID data.
[0068]
The character information is superimposed on the video signal corresponding to the endoscope image of the CCD 17i by the character superimposing circuit 77. Also in this case, the CPU 62 also controls the character information to be superimposed at an appropriate position corresponding to the actual number of pixels of the CCD 17i or the like based on the scope ID data.
[0069]
The signal output from the character superimposing circuit 77 is input to the encoder 78, and the D / A conversion is performed and video signals in various signal forms are generated. For example, video signals of the NTSC system, the RGB system, and the Y / C separation are generated and output to the monitor 5 via the 75Ω driver 79.
Others are the same as in the first embodiment.
[0070]
According to the present embodiment, in addition to the functions and effects of the first embodiment, even in the case where the number of pixels and the characteristics of the CCD 17i actually built in the endoscope 2A or 2B are different, By reading the scope ID data from the scope ID circuit 61i built in the endoscope 2I, it is possible to perform driving and signal processing suitable for the CCD 17i.
That is, according to the present embodiment, in addition to the effects of the first embodiment, there is an effect that it is possible to cope with endoscopes of different types incorporating image pickup devices having different numbers of pixels and characteristics. is there.
[0071]
Next, an endoscope system 1D of a modified example will be described with reference to FIG. This endoscope system 1D has substantially the same functions as the endoscope system 1C of FIG. 4 except that the endoscopes 2A and 2B are provided with, for example, dip switches 81a and 81b instead of the scope ID circuits 61a and 61b. Can be done.
[0072]
That is, as described below, by setting the dip switches 81a and 81b, a CCD identification signal is generated, and the driving and signal processing of the CCD 17i are controlled by the CCD identification signal. Then, the configuration is such that the processor 4D in which the CPU board 63 in the processor 4C of FIG. 4 is unnecessary can be used.
[0073]
The dip switch 81i includes a plurality of switches S (in FIG. 6, only one symbol S is attached), and one ends of the plurality of switches S are connected to a power source terminal with a resistor R (in FIG. 6, the symbol R is 1). And the other end is connected to the ground. One end of the switch S connected to the resistor R is connected to a terminal of (the electrical connector 13A of) the connector body 11A.
[0074]
Then, an on / off setting of the switch S generates an identification signal corresponding to the CCD 17a incorporated in the endoscope 2A.
[0075]
For example, in the case of FIG. 6, the three switches S are set to ON, OFF, and OFF, and the potential at one end of the three switches S is 011 as a binarized signal, and the 011 is used as the identification signal of the CCD 17a. The dip switch 81a is set according to the number of pixels, characteristics, and the like of the CCD 17a.
[0076]
The connector receiver 27A (the connector receiver 26) of the light source device 3D to which the connector main body 11A (the electrical connector 13A thereof) is detachably connected has a plurality of terminals connected to the terminal receivers to which the plurality of terminals are connected. 5 becomes a CCD identification signal, and is supplied to a timing generation circuit 42 and a CCD drive circuit 43 preamplifier 44 as in the case of FIG.
[0077]
After passing through the isolation circuit, the CCD identification signal is sent to the processor 4D via the CCD identification signal transmission line of the communication cable 50. Then, while controlling the timing generation circuit 58, the processing operation of the video processing circuit 57C is also controlled.
Similarly, a dip switch 81b provided on the endoscope 2B also includes a plurality of switches S, and is connected to a plurality of resistors R so that an identification signal of the CCD 17b can be generated.
[0078]
When the endoscope 2B is connected to the processor 4D via the electric cable 54 connected to the electric connector 13B, the CCD identification signal is transmitted from the connector receiver 55 of the processor 4D to the timing generation circuit of the patient board 53 in the processor 4D. 42, a CCD drive circuit 43, which is supplied to a preamplifier 44 to control its operation.
The CCD identification signal is supplied to a timing generation circuit 58 after passing through an isolation circuit in the processor 4D to control the timing generation circuit 58 and also control the processing operation of the video processing circuit 57C. .
[0079]
Also in the present embodiment, the identification signal corresponding to the CCD 17i can be generated by the dip switch 81i even in the case of the endoscope 2I incorporating the CCD 17i having a different number of pixels or the like. A similar function can be performed.
[0080]
In this case, the control board 63 provided with the CPU 62 on the processor 4D side becomes unnecessary, so that the circuit scale can be reduced. The other effects are the same as those of the third embodiment.
[0081]
Embodiments configured by partially combining the above-described embodiments and the like also belong to the present invention. For example, the endoscope of the first embodiment can be used in the third embodiment.
[0082]
That is, the endoscope according to the first embodiment does not have the scope ID circuits 61a and 61b. In this case, the CPU 62 performs control corresponding to the CCD 17 that does not have the scope ID circuits 61a and 61b.
[0083]
Further, configurations obtained by modifying the above-described embodiments and the like also belong to the present invention. For example, in FIG. 1 according to the first embodiment, the preamplifier 44, the CDS circuit 45, and the A / D conversion circuit 46 are provided on the patient substrate 23 on the light source device 3 side. The present invention also includes a configuration in which only the preamplifier 44 is provided, or the configuration is such that the signal is transmitted to the processor 4 via the signal line of the communication cable 50 without providing the preamplifier 44.
[0084]
【The invention's effect】
As described above, according to the present invention, in the case of an endoscope having a different connector body shape, more specifically, an endoscope having an existing connector body shape and a connector body having a different shape from the existing connector body shape With any of the endoscopes provided, it is possible to provide an endoscope system capable of performing endoscopy and the like while ensuring compatibility.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of an endoscope system according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing a peripheral portion of a connection portion when a first connector main body and a second connector main body are respectively connected to a connector receiver of a light source device and a processor.
FIG. 3 is an overall configuration diagram of an endoscope system according to a second embodiment of the present invention.
FIG. 4 is an overall configuration diagram of an endoscope system according to a third embodiment of the present invention.
FIG. 5 is a block diagram illustrating a configuration of a video processing circuit.
FIG. 6 is an overall configuration diagram of an endoscope system according to a modification of the third embodiment.
[Explanation of symbols]
1. Endoscope system
2A: First endoscope
2B: Second endoscope
3. Light source device
4. Processor
5. Monitor
8… Universal code
11A: Connector body
11B: Connector body
12. Connector for light source
13A ... electrical connector
13B ... electrical connector
14 ... Light guide connector
15 ... Fluid connector
16 ... Light guide
17 ... CCD
21 Power supply circuit
22 ... Light source circuit
23 ... Patient board
25 ... Light source connector receiver
26 ... Electric connector receiver
27A: Connector body receiver
31 ... Lamp
41 ... Clock generation circuit
42 ... timing generation circuit
43… CCD drive circuit
44 ... Preamplifier
48 dimming circuit
50 ... Communication cable
51 Power supply circuit
52 ... Video processing board
53 ... patient board
54 ... Electrical cable
55 ... electrical connector receiver
57 ... Video processing circuit
58 timing generator
T1 ... Drive signal output terminal
T1a: drive signal input terminal
T1b: Drive signal input terminal
T2a: imaging signal output terminal
T2b: imaging signal output terminal
T2: imaging signal input terminal

Claims (6)

A light source device having a light source that emits illumination light for irradiating a subject,
A first light source connector having a predetermined shape into which the illumination light emitted by the light source is incident;
A first endoscope including a first connector main body in which the first light source connector is extended in a predetermined direction;
A second light source connector having a shape similar to that of the first light source connector, and receiving the illumination light emitted by the light source;
A second endoscope including a second connector main body in which the second light source connector extends in a predetermined direction;
A light source connector receiver provided on the light source device for optically connecting the connected light source connector to the light source device by selectively connecting the first and second light source connectors to the light source device;
A first electric component provided in the first endoscope that performs an operation for executing a predetermined function of the first endoscope;
A second electrical component provided in the second endoscope that performs an operation for performing the same predetermined function as the first endoscope;
A first electrical connector that is provided to extend from the first connector body in a direction different from the first light source connector, and is electrically connected to the first electrical component;
A first electrical connector receiver provided on the external device for connecting the first electrical connector to an external device separate from the light source device;
A second electrical connector provided to extend from the second connector body in the same direction as the second light source connector, and electrically connected to the second electrical component;
A second electrical connector receiver provided on the light source device for connecting the second electrical connector to the light source device with connection of the second light source connector to the light source connector receiver;
Provided in the external device for transmitting or receiving a signal relating to the function of the first electric component with the first electric component via the first electric connector connected to the first electric connector receiver; A first electrical circuit,
According to the connection of the second light source connector with the light source connector receiver, the second light source connector is connected to the second electric component via the second electric connector connected to the second electric connector receiver. A second electric circuit provided in the light source device for transmitting or receiving a signal related to the function of the second electric component,
An endoscope system comprising: A first imaging element provided on the first electrical component that captures the subject image and generates an imaging signal;
A second imaging element provided on the second electrical component that captures the subject image and generates an imaging signal;
A first drive circuit provided in the first electric circuit of the external device that sends a drive signal for controlling the drive of the first image sensor;
A second driving circuit provided in the second electric circuit of the light source device for transmitting a driving signal for controlling driving of the second imaging element;
The endoscope system according to claim 1, further comprising: A first drive signal input terminal provided on the first electrical connector to which a drive signal from the first drive circuit can be input;
A second drive signal input terminal provided on the second electrical connector to which a drive signal from the second drive circuit can be input;
The first electrical connector, wherein a drive signal from the first drive circuit is output to the first drive signal input terminal in accordance with the connection of the first electrical connector with the first electrical connector receiver. A first drive signal output terminal provided on the receiver,
A drive signal from the second drive circuit is provided in the second electrical connector receiver, wherein a drive signal from the second drive circuit is output to the second drive signal input terminal in accordance with the connection of the second light source connector to the light source connector receiver. A second driving signal output terminal,
The endoscope system according to claim 2, further comprising: A first imaging signal output terminal provided on the first electrical connector for outputting an imaging signal from the first imaging element;
A second imaging signal output terminal provided on the second electrical connector for outputting an imaging signal from the second imaging element;
The first electrical connector, to which an imaging signal from the first imaging device is input from the first imaging signal output terminal in accordance with connection of the first electrical connector to the first electrical connector receiver. A first imaging signal input terminal provided on the receiver,
An imaging signal from the second imaging element is provided in the second electrical connector receiving input from the second imaging signal output terminal in accordance with connection of the second light source connector to the light source connector receiver. A second imaging signal input terminal provided;
An image processing circuit provided in the external device that performs predetermined signal processing for displaying an image of the subject on an imaging signal generated by the first or second imaging element;
A control circuit for generating a control signal for controlling the image processing circuit;
For inputting an image signal from the second image sensor and a control signal from the control circuit to the image processing circuit in accordance with the connection between the second electric connector and the second electric connector receiver. A communication cable connecting the light source device and the external device,
The endoscope system according to claim 2, further comprising: A first electric signal generating a timing signal for driving the first driving means and the image processing circuit at a predetermined timing in accordance with the connection between the first electric connector and the first electric connector receiver; A first timing circuit provided in the circuit,
As the control circuit, a timing signal for driving the second driving unit and the image processing circuit at a predetermined timing according to the connection between the second electric connector and the second electric connector receiver. The endoscope system according to claim 4, further comprising a second timing circuit provided in the generated second electric circuit. The control circuit is provided in each of the first and second endoscopes, and a control signal generated by the control circuit is used to identify a type of an image sensor or an endoscope that each endoscope has. The endoscope system according to claim 4, further comprising identification information.

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