JP2016086833A - Endoscope system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope system capable of securely recognizing a state of connection between an endoscope and a video processor.SOLUTION: An endoscope 2 has an electric connector 12 comprising a connection detection electric terminal 12a and a connection detection protrusion 12b. A video processor 3 has a connection unit 30 to which the electric connector 12 is to be connected and which comprises a connection detection electric terminal 35a for electrically communicating with the connection detection electric terminal 12a to output a second detection signal and a photo interrupter 35b for detecting the connection detection protrusion 12b to output a first detection signal. A control unit 31 determines a state of connection between the electric connector 12 and the connection unit 30 on the basis of an output signal from an OR circuit 36 for calculating the logical sum of the first detection signal and the second detection signal.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an endoscope system, and more particularly to an endoscope system capable of connecting an image signal picked up by an endoscope to a video processor via a connection connector.

  2. Description of the Related Art Conventionally, in an endoscope system including an endoscope and a video processor that processes an imaging signal captured by the endoscope, an imaging signal captured by the endoscope is transmitted using a so-called universal cord and a predetermined connection connector. There is known a system that can be connected to a video processor via a computer.

  For example, in Japanese Patent Application Laid-Open No. 2012-110526 (Patent Document 1), it is provided at an extended end portion of a universal cord for transmitting an imaging signal picked up by an endoscope and illumination light related to the endoscope. An endoscope having a light source connector, an electric cable extending from a side portion of the light source connector and transmitting the imaging signal and the like, and an electric connector disposed at an extended end of the electric cable is disclosed. .

  In this type of endoscope, the light source connector at the extended end of the universal cord is detachably connected to a predetermined light source device, and the electrical connector at the extended end of the electric cable is detachable to a video processor. Connected.

  On the other hand, when the endoscope side electrical connector arranged at the extended end of the electrical cable as described above is connected to the video processor, conventionally, whether or not the electrical connector is correctly connected to the video processor on the video processor side. There is also a known technique for detecting this by an electrical connection detector.

  For example, in a video processor, it is detected whether the electrical connection section for detecting connection in the endoscope-side electrical connector and the corresponding electrical connection portion on the video processor side are connected, and whether or not the endoscope-side electrical connector is connected to the video processor. A technique for detecting this is known.

JP 2012-110526 A

  However, in the technique for detecting the connection state between the electrical connector and the video processor using the electrical connection detection unit described above, for example, dirt or dust after the endoscope is cleaned adheres to the electrical slice for connection detection. There is a risk of erroneous connection detection due to the influence of such as.

  That is, although the electrical connector is actually connected to the video processor, there is a risk that the connection detection unit may recognize that the electrical connector is not connected because electrical connection cannot be confirmed. .

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an endoscope system that can reliably recognize the connection state between an endoscope and a video processor.

  An endoscope system according to an aspect of the present invention includes an electrical connector provided in an endoscope, a structure provided in the electrical connector, a first electrical contact provided in the electrical connector, and the electrical A video processor having a connecting portion to which a connector is connected, and provided in the connecting portion, and detects the structure and outputs a first detection signal when the electrical connector and the connecting portion are in a connected state. A detection unit, and a second electrical contact that is provided in the connection unit and that is electrically connected to the first electrical contact and outputs a second detection signal when the electrical connector and the connection unit are in a connected state; A logical sum circuit unit in which a first signal line to which the first detection signal is input and a second signal line to which the second detection signal is input are connected to an input terminal; and the video processor Provided in the logical sum times Based on the output signal of the part comprising the, a determining unit a connection state between the electrical connector and the connection portion.

  According to the endoscope system of the present invention, it is possible to provide an endoscope system that can reliably recognize the connection state between the endoscope and the video processor.

FIG. 1 is an external perspective view showing the configuration of the endoscope system according to the first embodiment of the present invention. FIG. 2 is a diagram illustrating an electrical configuration of the endoscope system according to the first embodiment. FIG. 3 is an enlarged perspective view of a main part illustrating a state of a disconnected state in the mechanical connection detection unit in the endoscope system according to the first embodiment. FIG. 4 is an essential part enlarged perspective view showing a state of connection in the mechanical connection detector in the endoscope system of the first embodiment. FIG. 5 is a timing chart showing a detection signal state of the connection detection unit in the normal state in the endoscope system of the first embodiment. FIG. 6 is a timing chart showing a detection signal state of the connection detection unit when an abnormality occurs only in the electrical connection detection unit in the endoscope system of the first embodiment. FIG. 7 is a timing chart showing a detection signal state of the connection detection unit when an abnormality occurs only in the mechanical connection detection unit in the endoscope system of the first embodiment. FIG. 8 is a timing chart showing the detection signal state of the connection detection unit in the normal state in the endoscope system according to the modified example of the first embodiment. FIG. 9 is a timing chart illustrating a detection signal state of the connection detection unit when an abnormality occurs only in the electrical connection detection unit in the endoscope system according to the modification of the first embodiment. FIG. 10 is a timing chart illustrating a detection signal state of the connection detection unit when an abnormality occurs only in the mechanical connection detection unit in the endoscope system according to the modification of the first embodiment. FIG. 11 is a diagram illustrating an electrical configuration of the endoscope system according to the second embodiment of the present invention. FIG. 12 is a timing chart showing the detection signal state of the connection detection unit in the normal state in the endoscope system of the second embodiment. FIG. 13 is a timing chart illustrating a detection signal state of the connection detection unit when an abnormality occurs only in the electrical connection detection unit in the endoscope system according to the second embodiment. FIG. 14 is a timing chart showing a detection signal state of the connection detection unit when an abnormality occurs only in the mechanical connection detection unit in the endoscope system of the second embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
The configuration of the endoscope system according to the first embodiment will be described with reference to FIGS. FIG. 1 is an external perspective view showing the configuration of the endoscope system of the first embodiment, and FIG. 2 is a diagram showing the electrical configuration of the endoscope system of the first embodiment. .

  As shown in FIGS. 1 and 2, an endoscope system 1 according to a first embodiment of the present invention is configured such that an endoscope 2 having an image sensor 25 and an endoscope 2 are detachably connected, and a predetermined A video processor 3 that performs signal processing, an endoscope 2 are detachably connected, a light source device 4 that supplies illumination light to the endoscope 2, and an image signal generated by the video processor 3 And a monitor 5 as a display device for displaying as an image.

  The endoscope 2 is an elongated insertion portion 6 to be inserted into a body cavity, an operation portion 7 provided at the rear end of the insertion portion 6, and the image pickup device 25 extends from the operation portion 7 and is imaged. A universal cord 8 for transmitting an imaging signal and illumination light related to the endoscope, a light source connector 11 provided at an extended end portion of the universal cord 8, and a side portion of the light source connector 11 It has an electric cable 9 for transmitting the image pickup signal and the like, and an electric connector 12 disposed at the extending end of the electric cable.

  The light source connector 11 is detachably connected to the light source device 4, and the electric connector 12 at the electric cable extension end is detachably connected to the video processor 3.

  The electrical connector 12 includes a predetermined electrical terminal 12c that is connected to a signal processing circuit or the like in the video processor 3, and includes a connection detection protrusion 12b that constitutes a mechanical connection detection unit, and an electrical connection detection unit. And an electrical terminal for connection detection 12a. Details will be described later.

  A light guide 13 for transmitting illumination light is inserted through the insertion portion 6, the operation portion 7 and the universal cord 8. Then, by connecting the light source connector 11 to the light source device 4, the illumination light from the light source device 4 is transmitted by the light guide 13, and the light guide attached to the illumination window provided at the distal end portion 14 of the insertion portion 6. The transmitted illumination light is emitted from the tip surface 13a.

  The distal end portion 14 is provided with an observation window adjacent to the illumination window, and an objective lens 21 for receiving an optical image of an illuminated subject such as an affected area is disposed on the observation window. A predetermined objective optical system 23 is disposed behind the objective lens 21, and an imaging element 25 is disposed at the imaging position of the objective lens 21 via the objective optical system 23.

  The image sensor 25 is constituted by, for example, a CCD image sensor, and is connected to the video processor 3 through the electrical connector 12 after passing through a cable inserted into the insertion portion 6 and the universal cord 8.

  The video processor 3 includes a control unit 31 that controls various circuits, a power supply circuit (not shown) that generates power supplies of a plurality of power supply voltages necessary for the operation of the image sensor, and a predetermined image signal output from the image sensor. A signal processing circuit (an image processing unit 32, a preprocessing unit 33, and the like) for performing the signal processing, and a CCD driving circuit 34 for driving the imaging element 25 in the endoscope 2.

  The preprocessing unit 33 inputs an image pickup signal from the image pickup device 25 and performs predetermined presignal processing, and includes a known signal amplification unit, a process circuit, an A / D converter, a white balance circuit, and the like. It is controlled by the control unit 31.

  Under the control of the control unit 31, the image processing unit 32 performs predetermined image processing on the output signal from the preprocessing unit 33 and outputs it as an image signal for display on the monitor 5.

  Further, the video processor 3 includes a video processor side connection portion 30 to which the electric connector 12 disposed at an extending end of the electric cable 9 branched from the universal cord 8 is connected.

  The video processor side connection unit 30 constitutes an electrical connection detection unit that is a connection detection unit between the endoscope and the video processor, and is connected to the video processor side connection facing the connection detection electrical terminal 12a on the endoscope side. An electrical terminal for detection 35a, and a photointerrupter 35b disposed at a position facing the connection detection protrusion 12b on the endoscope side, which constitutes a mechanical connection detection unit that is the connection detection unit. .

  Further, the video processor 3 is connected to an inverter 37a connected to the pulled-up signal line extending from the connection detecting electrical terminal 35a and connected to a pulled-down signal line extending from the output end of the photo interrupter 35b. And an inverter 37b for inputting the output signals of the inverter 37a and the inverter 37b.

  The output of the OR circuit 36 is input to the connection detection end of the control unit 31, and the control unit 31 determines whether or not the endoscope and the video processor are connected according to the output state of the OR circuit 36. It is supposed to be.

  Here, in the first embodiment, the output signal of the inverter 37a, which is an output signal of the electrical connection detection unit, is an H active signal, which is referred to as “signal A”, which is the first detection signal. To do. Further, the output signal of the inverter 37b, which is an output signal of the mechanical connection detection unit, is also an H active signal, which is referred to as “signal B” which is a second detection signal.

  The OR circuit 36 calculates the logical sum of the first detection signal “signal A” and the second detection signal “signal B” and outputs the result as a “signal C”. It is.

  Further, the connection detection end in the control unit 31 inputs the “signal C” output from the OR circuit 36, and when the “signal C” is in the “H” state, the connection to the electrical connector 12 and the video processor side is performed. It is determined that the unit 30 is connected.

  Here, the relationship between the connection detecting protrusion 12b in the electrical connector 12 and the photo interrupter 35b in the video processor 3 will be described with reference to FIGS.

  As shown in FIG. 3, the photo interrupter 35 b is a so-called transmissive photo interrupter. When the electrical connector 12 in the endoscope 2 is connected to the video processor side connection portion 30 in the video processor 3, the light emitting element and the light receiving element are received. The connection detection protrusion 12b is disposed at a position where the connection detection protrusion 12b is inserted into and removed from the slit between the element.

  FIG. 3 shows the relationship between the connection detecting protrusion 12b and the photo interrupter 35b when the electrical connector 12 and the video processor side connection portion 30 are not connected. FIG. 4 shows the relationship when the connection is made. Show.

<Operation of First Embodiment>
<Connection detection between endoscope and video processor>
Next, connection detection between the endoscope and the video processor in the present embodiment will be described.

  FIG. 5 is a timing chart showing the detection signal state of the connection detection unit in the normal state in the endoscope system of the first embodiment, and FIG. 6 is a diagram when abnormality occurs only in the electrical connection detection unit. FIG. 7 is a timing chart showing the detection signal state of the connection detection unit, and FIG. 7 is a timing chart showing the detection signal state of the connection detection unit when an abnormality occurs only in the mechanical connection detection unit.

  Here, in the present embodiment, when the electrical connector 12 is connected to the video processor side connection unit 30 (see FIG. 4), as described above, the “signal A” and the “signal B” that are detection signals of H active are Both are set to the “H” state and input to the OR circuit 36 (see FIG. 5).

  That is, in this embodiment, in the state where the electrical connector 12 is connected to the video processor side connection unit 30, the “signal C” that is the OR operation output signal of the OR circuit 36 is set to the “H” state in the control unit 31. Input to the connection detection end.

  Then, the control unit 31 recognizes that the electrical connector 12 is connected to the video processor side connection unit 30 with the “H” state of the “signal C” input to the connection detection end. .

  On the other hand, for example, even if dirt or dust adheres to the connection detection electrical terminal 12a in the electrical connector 12, and the electrical connector 12 is connected to the video processor side connection portion 30, the electrical connection with the connection detection electrical terminal 35a is ensured. In such a case, as shown in FIG. 6, the “signal A”, which should originally be in the “H” state, may remain in the “L” state.

  However, even in such a case, if the relationship between the connection detecting protrusion 12b and the photo interrupter 35b is normal, the “signal B” is in the “H” state, and therefore the OR circuit 36 The “signal C” that is the output signal is in the “H” state, whereby the control unit 31 can recognize that the electrical connector 12 is connected to the video processor side connection unit 30.

  On the other hand, when the electrical connector 12 is connected to the video processor side connection portion 30 due to, for example, the connection detection protrusion 12b of the electrical connector 12 being bent, the insertion of the slit in the photo interrupter 35b to the specified position is not realized. As shown in FIG. 7, there is a possibility that the “signal B”, which should originally be in the “H” state, remains in the “L” state.

  However, even in such a case, as described above, if the connection state between the connection detection electrical terminal 12a and the connection detection electrical terminal 35a is normal, the "signal A" is in the "H" state. Therefore, the “signal C” that is the output signal of the OR circuit 36 is in the “H” state, and as a result, the control unit 31 is in a state in which the electrical connector 12 is connected to the video processor side connection unit 30. I can recognize that.

  As described above, according to the endoscope system of the first embodiment, when determining the connection state between the electrical connector 12 in the endoscope 2 and the video processor side connection unit 30 in the video processor 3, The connection state is determined using two types of connection detection units, namely, a connection detection unit (connection detection electrical terminal 12a and connection detection electrical terminal 35a) and a mechanical connection detection unit (connection detection projection 12b and photointerrupter 35b). And the logical sum of the first detection signal “signal A” which is an output signal of the electrical connection detection unit and the second detection signal “signal B” which is an output signal of the mechanical connection detection unit. Since the connection state is determined by calculation, even if a failure occurs in any of the detection units, the connection state between the electrical connector 12 and the video processor side connection unit 30 is determined. It is possible to reliably determine recognize.

(Modification of the first embodiment)
Next, a modification of the first embodiment of the present invention will be described.

  FIG. 8 is a timing chart showing the detection signal state of the connection detection unit in the normal state in the endoscope system according to the modification of the first embodiment, and FIG. 9 is an endoscope system according to the modification. FIG. 10 is a timing chart showing a detection signal state of the connection detection unit when an abnormality occurs only in the electrical connection detection unit in FIG. 10, and FIG. 10 shows only the mechanical connection detection unit in the endoscope system according to the modification. It is the timing chart which showed the detection signal state of the connection detection part when abnormality has arisen.

  As described above, in the first embodiment, when the electrical connector 12 in the endoscope 2 is connected to the video processor side connection unit 30 in the video processor 3 as shown in FIGS. In 35b, the connection detecting projection 12b is inserted into and removed from the slit between the light emitting element and the light receiving element.

In this modification, in view of the positional relationship between the connection detection protrusion 12b and the photo interrupter 35b, the mechanical connection detection unit when the electrical connector 12 is connected to the video processor side connection unit 30 (see FIG. 4). The rising change of the second detection signal “signal B” as the output signal is delayed by a predetermined time.

  Specifically, as shown in FIG. 8, in the normal state, the H active detection signal at a timing delayed by time “t” with respect to the timing at which the electrical connector 12 is connected to the video processor side connection unit 30. The “signal B” is changed from the “L” state to the “H” state.

  Note that the first detection signal “signal A”, which is an output signal of the electrical connection detection unit, is “L” at the timing when the electrical connector 12 is connected to the video processor side connection unit 30 without delay in a normal state. The state changes from the “state” to the “H” state.

  Therefore, the “signal C”, which is the logical sum operation output signal of the OR circuit 36, changes from the “L” state to the “H” state at the timing when the electrical connector 12 is connected to the video processor side connection unit 30 in the normal state. It will be changed and input to the connection detection end in the control unit 31.

  In this modified example, even when the electrical connector 12 is connected to the video processor side connection portion 30, when the electrical connection between the connection detection electrical terminal 12a and the connection detection electrical terminal 35a cannot be ensured, the following operation is performed. Become.

  That is, as shown in FIG. 9, the first detection signal “signal A” that should be in the “H” state because the electrical connection between the connection detection electrical terminal 12a and the connection detection electrical terminal 35a cannot be ensured is “L”. Even if the state remains, if the relationship between the connection detecting protrusion 12b and the photo interrupter 35b is normal, the second detection signal “signal B” is delayed at time “t”. “H” state.

  Then, the “signal C” that is an output signal of the OR circuit 36 becomes “H” state at a timing delayed by time “t”, and the control unit 31 is in a state where the electrical connector 12 is connected to the video processor side connection unit 30. Can be recognized.

  On the other hand, if the connection detecting protrusion 12b cannot be inserted into the prescribed position of the photo interrupter 35b, the "signal B" that should be originally in the "H" state is in the "L" state as shown in FIG. Will remain.

  However, if the connection state between the connection detection electrical terminal 12a and the connection detection electrical terminal 35a is normal, the first detection signal “signal A” is in the “H” state. The output signal “signal C” is in the “H” state.

  Then, similarly to the above, the control unit 31 can recognize that the electrical connector 12 is connected to the video processor side connection unit 30.

  As described above, also in the endoscope system according to the modification of the first embodiment, the same operational effects as those in the first embodiment can be obtained.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  As described above, in the endoscope system of the first embodiment, the first detection signal, which is the output signal of the electrical connection detection unit, is set to the “active signal A” and the output signal of the mechanical connection detection unit. The second detection signal is an H active “signal B”, and the OR circuit 36 calculates the logical sum of these H active “signal A” and “signal B”. When the calculation output signal is in the “H” state, the control unit 31 determines that the electrical connector 12 and the video processor side connection unit 30 are connected.

  In contrast, in the second embodiment, the first detection signal that is the output signal of the electrical connection detection unit and the second detection signal that is the output signal of the mechanical connection detection unit are L-active. “Signal A” and “Signal B” are calculated, and the logical product of these “L” active “Signal A” and “Signal B” is calculated. The connection state with the connection unit 30 is determined.

  FIG. 11 is a diagram illustrating an electrical configuration of the endoscope system according to the second embodiment of the present invention. Note that the endoscope system 1 of the second embodiment has the same basic configuration as that of the first embodiment and differs only in the configuration of the connection detection unit. Will not be described in detail here.

  In the second embodiment, the video processor 103 includes a video processor side connection unit 30 similar to that of the first embodiment. That is, also in the second embodiment, the video processor side connection unit 30 includes a connection detection electrical terminal 35a that constitutes an electrical connection detection unit, and a photo interrupter 35b that constitutes a mechanical connection detection unit.

  Further, the video processor 103 includes an AND circuit 136 connected to the signal line extended from the connection detection electrical terminal 35a and pulled up, and to the signal line extended from the output end of the photo interrupter 35b and pulled down. Have.

  The output of the AND circuit 136 is input to the connection detection end of the control unit 31, and the control unit 31 determines whether the endoscope and the video processor are connected according to the output state of the AND circuit 136. It is supposed to be.

  Here, in the second embodiment, the extension signal line of the connection detection electrical terminal 35a, which is the output signal of the electrical connection detection unit, is an L active signal line, and this is the first detection line. The signal is “signal A”.

  In addition, the output signal of the photo interrupter 35b, which is an output signal of the mechanical connection detection unit, is also an L active signal, and this is a “detection signal B” which is a second detection signal. The AND circuit 136 calculates an AND of the “signal A” as the first detection signal and the “signal B” as the second detection signal, and outputs the logical product as the “signal C”. It is.

  Further, the connection detection end in the control unit 31 inputs the “signal C” output from the AND circuit 136, and when the “signal C” is in the “L” state, the connection to the electrical connector 12 and the video processor side is performed. It is determined that the unit 30 is connected.

  Thereby, also in the second embodiment, the control unit 31 substantially includes the first detection signal that is the output signal of the electrical connection detection unit and the output signal of the mechanical connection detection unit. It can be said that the connection between the electrical connector 12 and the video processor side connection unit 30 is determined based on the logical sum of the two detection signals.

<Operation of Second Embodiment>
<Connection detection between endoscope and video processor>
Next, connection detection between the endoscope and the video processor in the present embodiment will be described.

  FIG. 12 is a timing chart showing a detection signal state of the connection detection unit in a normal state in the endoscope system of the second embodiment, and FIG. 13 is a diagram when abnormality occurs only in the electrical connection detection unit. FIG. 14 is a timing chart showing a detection signal state of the connection detection unit when an abnormality occurs only in the mechanical connection detection unit.

  In the second embodiment, when the electrical connector 12 is connected to the video processor side connection unit 30 (see FIG. 4), as described above, “signal A” and “signal B” which are L active detection signals. Are in the “L” state and are input to the AND circuit 136 (see FIG. 12).

  That is, in the second embodiment, when the electrical connector 12 is connected to the video processor side connection unit 30, the “signal C” that is the logical product operation output signal of the AND circuit 136 is controlled to be in the “L” state. This is input to the connection detection end in the unit 31.

  The control unit 31 recognizes that the electrical connector 12 is connected to the video processor side connection unit 30 with the “L” state of the “signal C” input to the connection detection end. .

  On the other hand, for example, even if dirt or dust adheres to the connection detection electrical terminal 12a in the electrical connector 12, and the electrical connector 12 is connected to the video processor side connection portion 30, the electrical connection with the connection detection electrical terminal 35a is ensured. In such a case, as shown in FIG. 13, the “signal A”, which should originally be in the “L” state, may remain in the “H” state.

  However, even in such a case, if the relationship between the connection detecting protrusion 12b and the photo interrupter 35b is normal, the “signal B” is in the “L” state, and therefore the AND circuit 136 The “signal C” that is the output signal is in the “L” state, whereby the control unit 31 can recognize that the electrical connector 12 is connected to the video processor side connection unit 30.

  On the other hand, when the electrical connector 12 is connected to the video processor side connection portion 30 due to, for example, the connection detection protrusion 12b of the electrical connector 12 being bent, the insertion of the slit in the photo interrupter 35b to the specified position is not realized. As shown in FIG. 14, the “signal B”, which should originally be in the “L” state, may remain in the “H” state.

  However, even in such a case, as described above, if the connection state between the connection detection electrical terminal 12a and the connection detection electrical terminal 35a is normal, the "signal A" is in the "L" state. Therefore, the “signal C” that is an output signal of the AND circuit 136 is in the “L” state, and as a result, the control unit 31 is in a state in which the electrical connector 12 is connected to the video processor side connection unit 30. I can recognize that.

  As described above, even in the endoscope system of the second embodiment, the connection state is detected using two types of connection detection units, that is, the electrical connection detection unit and the mechanical connection detection unit, and By calculating the logical product of the first detection signal “signal A” that is the output signal of the electrical connection detection unit and the second detection signal “signal B” that is the output signal of the mechanical connection detection unit, Since the connection state is determined, the connection state between the electrical connector 12 and the video processor side connection unit 30 is ensured as in the first embodiment, even if a failure occurs in any of the detection units. Can judge and recognize.

  The present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Endoscope system 2 ... Endoscope 3 ... Video processor 12 ... Electric connector 12a ... Connection detection electric terminal 12b ... Connection detection protrusion part 30 ... Video processor side connection part 31 ... Control part 35a ... Electricity for connection detection Terminal 35b ... Photo interrupter 36 ... OR circuit

Claims (2)

An electrical connector provided on the endoscope;
A structure provided in the electrical connector;
A first electrical contact provided on the electrical connector;
A video processor having a connection to which the electrical connector is connected;
A detection unit that is provided in the connection unit and detects the structure and outputs a first detection signal when the electrical connector and the connection unit are in a connected state;
A second electrical contact that is provided in the connecting portion and that is electrically connected to the first electrical contact and outputs a second detection signal when the electrical connector and the connecting portion are in a connected state;
An OR circuit unit in which a first signal line to which the first detection signal is input and a second signal line to which the second detection signal is input are connected to an input terminal;
A determination unit that is provided in the video processor and determines a connection state between the electrical connector and the connection unit based on an output signal of the OR circuit unit;
An endoscope system comprising: The structure is a protrusion;
The detection unit is a photo interrupter, and is arranged at a position that blocks light emitted from a light emitting element in the photo interrupter when the electrical connector and the connection unit are in a connected state. The endoscope system according to Item 1.

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