JP2004097442A - Electronic endoscope system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic endoscope system with which normal observation and stroboscopic observation can simply be performed without making an operator feel troublesomeness. <P>SOLUTION: This electronic endoscope system is provided with: a processor having a first light-emitting means for emitting continuous light for the normal observation of a region to be observed which vibrates fast with a fixed period; a stroboscopic light source device having a second light-emitting means for emitting stroboscopic light at a prescribed time for the stroboscopic observation of the region to be observed; and an electronic scope comprising a setting means for setting either of the normal observation or the stroboscopic observation as an observing method, a connection means to be connected with the first light emitting means and the second light emitting means optically and electrically, and an optical path switching means for switching an optical path so as to guide only light corresponding to an observation method set by the setting means among light emitted from the respective light emitting means to an illumination part at a distal end. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electronic endoscope system used for observing a body, particularly a larynx.
[0002]
[Prior art]
In recent years, observation and treatment using an electronic endoscope system have been spreading in the field of otolaryngology. In the field of ear, nose, and throat, it not only observes the observation site and its surroundings (hereinafter referred to as normal observation), but also has a high speed with a constant periodicity like a vocal cord when one sound is uttered continuously. Observing a vibrating part as a slow moving image so that the vibration state can be grasped (hereinafter referred to as strobe observation) is also indispensable for diagnosis and treatment of laryngeal diseases. That is, by observing the high-speed vibration portion with a strobe, it is possible to determine whether the observed portion is hardened by cancer or scar, or softened by a polyp or the like. However, since the conventional electronic endoscope system is configured for normal observation, it is not possible to capture and observe a high-speed vibrating part such as the vocal cord as a slow moving image.
[0003]
Therefore, in the past, the otolaryngology department used an endoscope system dedicated to strobe observation, called a pharyngeal stroboscope system. A pharyngeal stroboscope system includes a strobe light source device that emits intermittent flash light (strobe light), a bone conductive microphone connected to the light source device, a fiberscope, a television camera, a monitor, and the like. The strobe observation is realized as follows. That is, a bone-conducting microphone is placed near the throat of the subject, and the vibration period of the vocal cords accompanying the utterance is detected. Then, the strobe light is emitted from the strobe light source device in synchronization with the detected oscillation cycle to illuminate the vibrating part. The illuminated part is photographed with a fiberscope, and an image of the observed part is output to a monitor or the like via a television camera attached to the eyepiece. Here, if the light emission cycle is controlled so that the strobe light emits light with a phase shift by a predetermined amount with respect to the vibration waveform of the vocal cords, observation with a slow moving image becomes possible. If the strobe light is controlled to always emit light at a predetermined phase in the vocal cord vibration waveform, it is possible to observe only a specific shape as a still image.
[0004]
As described above, the electronic endoscope system for normal observation and the pharyngeal stroboscope system have conventionally been used in combination. For this reason, the operator has to use the endoscope system properly in accordance with the desired observation, and there is a problem that the operator cannot bear the trouble.
[0005]
[Problems to be solved by the invention]
In view of the above circumstances, an object of the present invention is to provide an electronic endoscope system that can easily perform normal observation and strobe observation without causing an operator to feel troublesome.
[0006]
[Means for Solving the Problems]
For this reason, the electronic endoscope system according to claim 1 includes a processor having a first light emitting unit that irradiates continuous light for normally observing an observation site that vibrates at a high speed with a fixed period, and a processor that includes an observation site. A strobe light source device having a second light emitting means for irradiating strobe light at a predetermined timing for strobe observation, setting means for setting one of observation methods of normal observation and strobe observation, a first light emitting means and A connection unit that is optically and electrically connected to the second light emitting unit, and among the lights emitted from each light emitting unit, only light corresponding to the observation method set by the setting unit is guided to the illumination unit at the tip. An electronic scope having optical path switching means for switching an optical path.
[0007]
According to the above configuration, the set observation is easily performed without preparing a plurality of devices corresponding to the observation method set by the operator. That is, during the endoscopic procedure, the operator does not need to use the endoscope apparatus properly according to the observation to be performed. The observation method can be easily changed in a state where the electronic scope is inserted into the subject, which leads to a reduction in mental fatigue and physical pain of the subject.
[0008]
Further, the processor and the strobe light source device constituting the electronic endoscope system according to the first aspect of the present invention can be used with the existing processor and the strobe light source device slightly modified or as they are. Therefore, it is possible to configure the system at low cost. In addition, conventionally, in order to perform a plurality of types of observation, a dedicated endoscope system has to be provided for each. For this reason, the space occupied by the equipment related to the endoscope system in the endoscopic treatment room had to be large. However, the present invention can achieve the common use of the components of the system. It can contribute to the conversion.
[0009]
More specifically, the electronic endoscope system according to the present invention includes a detecting unit that detects a vibration waveform of an observation site that vibrates at a high speed with a certain period, and a second detection unit that detects a vibration waveform detected by the detecting unit. And a first control means for controlling the light emission timing of the light emitting means. The detection means and the first control means can be provided in an electronic scope (claim 3). Thereby, the diameter of the cable between the electronic scope and the strobe light source device is reduced. Further, since the electronic scope has the detecting means, the operator can easily attach and detach the detecting means to and from the subject even when the electronic scope is inserted into the body of the subject. If the strobe light source device originally has the detection means and the first control means, it is also possible to use them (claim 4).
[0010]
If the first control means controls the second light emitting means so that the phase of the light emission timing of the second light emitting means is shifted by a predetermined amount with respect to the vibration waveform, a portion vibrating at high speed is observed as a slow moving image. (Claim 5), and if the second light-emitting means is controlled so as to always emit light at a predetermined phase of the vibration waveform, one shape during vibration of a portion vibrating at high speed can be stopped. It can also be observed as a picture (claim 6).
[0011]
According to the electronic endoscope system according to claim 7, the processor includes: a second control unit that controls the electronic scope so that imaging corresponding to the observation set by the setting unit is performed; Image signal processing means for performing predetermined processing on the transmitted image signal and outputting the processed signal to an external device.
[0012]
According to the electronic endoscope system of the eighth aspect, the continuous light emitted from the first light emitting means is light in which R, G, and B lights are sequentially switched at predetermined intervals, and the image signal processing is performed. The means has R, G, and B signal processing units for performing predetermined processing on R, G, and B image signals generated by the R, G, and B lights, respectively. The control means controls the electronic scope and the first light emitting means so that R, G, and B image signals can be obtained within a cycle of one screen of the external device. , And B, by simultaneously outputting the R, G, and B image signals processed by the signal processing units to an external device, a color image for one screen can be generated. Thus, at the time of normal observation, the entire observation site and its surroundings can be observed with a color image.
[0013]
In the electronic endoscope system having the configuration according to the eighth aspect, at the time of flash observation, the second control means controls the electronic scope so that imaging is performed once within a cycle of one screen of the external device. The image processing means performs a predetermined process on an image signal generated by one image pickup using one of the signal processing units, and converts the processed image signal into the other two signal processing units. It is desirable to generate a monochrome image for one screen by simultaneously distributing the image to an external device (claim 9).
[0014]
According to the electronic endoscope system of the tenth aspect, it is desirable to use the present system when the vocal cords are the observation site.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a schematic configuration diagram of an electronic endoscope system 100 according to an embodiment of the present invention. The electronic endoscope system 100 is used not only for observation (normal observation) for grasping the observation site and its surroundings, but also for slow-speed oscillation of a site that vibrates at high speed with a constant periodicity. It is possible to observe a moving image (strobe observation). It includes a processor 100A, an electronic scope 100B, a strobe light source device 100C, and a TV monitor 100D. The processor 100A includes a light source unit 1, a control unit 2, and an image signal processing circuit 3. The electronic scope 100B includes a setting unit 4, an optical path switching unit 5, an image sensor 6, a light emission control circuit 7, and light guides LG1 to LG3.
[0016]
The light source unit 1 in the processor 100A emits continuous light for illuminating an observation site during normal observation. The control unit 2 controls the entire processor 100A and the entire electronic scope 100B including the image sensor 6. The image signal processing circuit 3 performs predetermined image processing on the image signal transmitted from the imaging element 6 and outputs the image signal to the TV monitor 100D as a video signal.
[0017]
When performing a treatment such as a medical treatment using the electronic endoscope system 100, the electronic scope 100B is electrically and optically connected to the processor 100A via the connector C1. The electronic scope 100B is also connected to a flash light source device 100C. Specifically, the electronic scope 100B and the strobe light source device 100C are electrically connected via connectors C3 and C4, and optically connected via connectors C5 and C6. Further, a microphone (bone conduction microphone) M is connected to the electronic scope 100B via the connector C2.
[0018]
When the electronic scope 100B is connected to the processor 100A and the strobe light source device 100C as described above, the light guide LG1 guides the continuous light emitted from the light source unit 1 to the optical path switching unit 5, and the light guide LG2 sets the strobe light. The strobe light emitted from the light source device 100D is guided to the optical path switching unit 5. The light guide LG3 guides the light selected by the optical path switching unit 5 to the illumination unit at the tip of the electronic scope 100B.
[0019]
The operating unit of the electronic scope 100B is provided with a setting unit 4 for the operator to set the normal observation or the strobe observation. The light emission control circuit 7 is a circuit for controlling the light emission timing of the strobe light.
[0020]
When the operator operates the setting unit 4 to set the observation method, a control signal corresponding to the set observation method is transmitted to each component of the electronic endoscope system 100. The components to which the control signal is transmitted mainly include the optical path switching unit 5 in the electronic scope 100B, the light emission control circuit 7, the control unit 2 in the processor 100A via the connector C1, the image signal processing circuit 3, and the like. included. Upon receiving the control signal, each component performs a predetermined process so that the observation set by the operator is performed.
[0021]
The optical path switching unit 5 responds to the control signal from the setting unit 4 so that light corresponding to the observation method set by the operator is emitted from the illumination unit at the distal end of the electronic scope via the light guide LG3. Switches the optical path between continuous light and strobe light. FIG. 2 is a diagram illustrating the optical path switching unit 5. The optical path switching unit 5 includes a driver 51, a motor 52, a light guide holding unit 53, a rail 54, a first sensor 55, and a second sensor 56.
[0022]
The control signal transmitted from the setting unit 4 is input to the driver 51. When a control signal is input to the driver 51, the drive of the motor 52 causes the light guide holding unit 53 to move along the rail 54. The light guide holding unit 53 (and the light guide LG3) moves to a position where light corresponding to the set observation method enters the light guide LG3. Specifically, at the time of the normal observation setting, the light guide holding unit 53 moves to a position where the incident end of the light guide LG3 and the exit end of the light guide LG1 face each other, that is, the continuous light incident position. Whether the light guide holder 53 has moved to the continuous light incident position is detected by the first sensor 55, and the driver 51 stops driving the motor 52 based on this detection signal. Further, at the time of flash observation, the light guide holding unit 53 moves to a position where the incident end of the light guide LG3 and the emission end of the light guide LG2 face each other, that is, the strobe light incident position. Whether the light guide holder 53 has moved to the strobe light incident position is detected by the second sensor 56, and the driver 51 stops driving the motor 52 based on this detection signal. In FIG. 2, the state where the light guide holding unit 53 is at the continuous light incident position is indicated by a solid line, and the state where the light guide holding unit 53 is at the strobe light incident position is indicated by a broken line.
[0023]
Note that the electronic endoscope system 100 of the present embodiment observes a vocal cord vibrating at a high speed by the subject continuously uttering a predetermined level of sound.
[0024]
Hereinafter, the imaging process of the electronic endoscope system 100 when the operator sets the normal observation by the setting unit 4 will be described. When the normal observation is set, the control signal for executing the normal observation is transmitted from the setting unit 4 to each component of the electronic endoscope system 100 as described above.
[0025]
When the control unit 2 receives the control signal, the control unit 2 causes the light source unit 1 to emit light in which R (red), G (green), and B (blue) continuously switch at predetermined intervals. As a configuration of the light source unit 1 that emits continuous light in which R, G, and B lights are sequentially switched, there is a configuration including a xenon light source and a rotary filter plate having an RGB filter disposed in front of the xenon light source. The control unit 2 can finely adjust the predetermined period by changing the rotation speed of the rotary filter plate. At the time of normal observation, the control signal transmitted from the setting unit 4 to the light emission control circuit 7 has a meaning as a gate signal. Due to the gate signal, the light emission control circuit 7 does not output a light emission signal to the strobe light source device 100C. Therefore, the strobe light source device 100C does not emit strobe light.
[0026]
The continuous RGB light emitted from the light source unit 1 sequentially enters the optical path switching unit 5 via the light guide LG1. In the optical path switching unit 5, the light guide holding unit 53 is arranged at a continuous light incident position indicated by a solid line in FIG. 2 according to a control signal from the setting unit 4. Therefore, the continuous RGB light is incident on the light guide LG3, is irradiated from the illumination unit at the tip of the electronic scope 100B, and illuminates the vocal cords as the observation site.
[0027]
Under the control of the control unit 2, the imaging element 6 accumulates electric charges corresponding to the optical image formed on the light receiving surface by the light reflected and incident on the observation site. Then, the stored charge is transferred to the image signal processing circuit 3 as an image signal. FIG. 3 is a timing chart when the electronic endoscope system 100 is observed. As shown in FIG. 3A, during normal observation, the control unit 2 controls the imaging device 6 to perform imaging-related signals so that imaging is performed once by each of RGB light within a cycle of one screen of the TV monitor 100D. (Hereinafter, referred to as an imaging signal). In FIG. 3A, the R imaging period is a period in which the imaging element 6 accumulates electric charges by R light, and the R transfer period is an image signal processing in which electric charges accumulated by R light are used as an R image signal. This is a period during which data is transferred to the circuit 3. The same applies to the G and B imaging periods and the transfer period.
[0028]
FIG. 4 is a schematic diagram illustrating a part of the image signal processing circuit 3. As shown in FIG. 4, the image signal processing circuit 3 includes three processing circuits (R processing circuit 3R, G processing circuit 3G, and B processing circuit 3B) corresponding to each of the RGB image signals. Each processing circuit includes pre-processing units 31R, 31G, 31B, three memories 32R, 32G, 32B for synchronizing image data, and post-processing units 33R, 33G, 33B. The image signal processing circuit 3 performs a predetermined process by allocating each of the RGB image signals sequentially transferred from the image sensor 6 to one of the corresponding processing circuits 3R to 3B. Specifically, taking an R image signal as an example, in the R processing circuit 3R, the R image signal is subjected to predetermined processing such as D / A conversion in a pre-processing unit, and then stored in the R memory 32R. Is stored as Similar processing is performed on the G image signal and the B image signal.
[0029]
When the normal observation is set, the image signal processing circuit 3 switches the switches SW1 and SW2 to the α terminal side as shown by the solid line in FIG. 4 in response to the control signal transmitted from the setting unit 4. The R, G, and B image data stored in the memories 32R to 32B are simultaneously read out in synchronization with the vertical synchronization signal of the TV monitor 100D, and are A / D converted by the corresponding post-processing units 33R to 33B. After being subjected to predetermined processing such as the above, the image is output to the TV monitor 100D as a color image for one screen.
[0030]
The above is the imaging processing of the electronic endoscope system 100 during normal observation. Next, an imaging process of the electronic endoscope system 100 when an operator sets strobe observation by the setting unit 4 will be described. When the strobe observation is set, the control signal for executing the strobe observation is transmitted from the setting unit 4 to each component of the electronic endoscope system 100 as described above.
[0031]
When the control unit 2 receives a control signal related to strobe observation from the setting unit 4, the control unit 2 controls the imaging device 6 to perform imaging once within a cycle of one screen of the TV monitor 100 </ b> D as shown in FIG. Transmit the imaging signal. In FIG. 3B, the imaging period is a period during which charge can be accumulated according to light incident on the imaging element 6. That is, during the imaging period, the charge is actually accumulated only while the observation site is illuminated. Here, the control unit 2 also transmits the imaging signal to the light emission control circuit 7.
[0032]
When performing flash observation, the surgeon fixes the microphone M near the subject's throat and asks the subject to continuously utter sound at a certain level of frequency. The microphone M uses an osteoconductive microphone, detects a vibration waveform of a vocal cord during high-speed vibration, and transmits the detected signal to the light emission control circuit 7 as a detection signal. FIG. 3C shows a vibration waveform of the vocal cords detected by the microphone M. In the waveform shown in FIG. 3C, the peak corresponds to the open state of the vocal cords, and the valley corresponds to the closed state of the vocal cords.
[0033]
The light emission control circuit 7 generates a light emission instruction pulse based on the imaging signal from the control unit 2 and the detection signal from the microphone M (that is, the vocal cord vibration waveform). FIG. 3D shows the generation timing of the light emission instruction pulse, that is, the light emission timing of the strobe light source device 100C. As shown in FIG. 3D, the light emission instruction pulse is generated only once within a cycle of one screen of the TV monitor.
[0034]
In the light emission control circuit 7, data relating to how many frames to observe the vibration of the vocal cord for one wavelength is set in advance. In the case of the present embodiment, the setting is such that the vibration of the vocal cord for one wavelength is observed in four frames. That is, the light emission instruction pulse is generated in synchronization with a phase shifted by ず つ cycle from the phase of the vibration waveform of the vocal cord corresponding to the previous generation of the light emission instruction pulse.
[0035]
The light emission control circuit 7 always counts the period of each vocal cord vibration waveform for each wavelength using the detection signal. Then, based on the cycle T1 of the wavelength measured just before the fall of the imaging signal, the cycle T2 of the wavelength immediately after the fall of the imaging signal is determined. Then, in the cycle T2, the light emission instructing pulse S1 is generated in synchronization with the phase P1 shifted by ４ cycle from the phase P0 corresponding to the falling. Similarly, the light emission control circuit 7 determines the cycle T5 of the wavelength immediately after the falling of the imaging signal based on the cycle T4 of the wavelength measured just before the next falling of the imaging signal. Then, in the cycle T5, a light emission instruction pulse S2 is generated in synchronization with the phase P1 shifted by 周期 cycle from the phase P0. The light emission control circuit 7 performs the same processing to generate a light emission instruction pulse after S3. However, the emission instruction pulse is generated only within one wavelength immediately after the fall of the imaging signal.
[0036]
The generated light emission instruction pulse is output to the strobe light source device 100C. The strobe light source device 100C emits strobe light in response to a light emission instruction pulse. The strobe light enters the optical path switching unit 5 via the light guide LG2. In the light path switching unit 5, the light guide holding unit 53 is arranged at the strobe light incident position indicated by the broken line in FIG. 2 according to the control signal from the setting unit 4. Therefore, the strobe light is incident on the light guide LG3, is irradiated from the tip of the electronic scope 100B, and illuminates the vocal cords as the observation site.
[0037]
The imaging element 6 accumulates electric charges based on the optical image of the observation site illuminated by the strobe light during the imaging period, and outputs the accumulated electric charges to the image signal processing circuit 3 as an image signal during the transfer period. Here, as described above, during the flash observation, since the flash emission is performed only once within the cycle of one screen of the TV monitor 100D, the imaging by the image sensor 6 is performed only once. Therefore, unlike the imaging signal for normal observation (FIG. 3A), the imaging signal for flash observation (FIG. 3B) is provided with a transfer period so that the accumulated charge of the imaging element 6 is transferred only once. , And all other periods are set to the imaging period.
[0038]
Specifically, the transfer period of the image signal during the flash observation is set to be substantially the same as the B transfer period during the normal observation. Therefore, the image signal transferred to the image signal processing circuit 3 is subjected to predetermined processing in the B processing circuit 3B. Specifically, the image signal processing circuit 3 stores the image signal as image data in the B memory 32B via the pre-processing unit 33B.
[0039]
The image data stored in the B memory 32B is read out again as an image signal in synchronization with the vertical synchronization signal of the TV monitor 100D. Here, the switches SW1 and SW2 are switched to the β terminal side as shown by the broken line in FIG. Therefore, the image signal output from the B memory 32B is distributed to the R processing circuit 3R and the G processing circuit 3G via the switches SW1 and SW2. In each of the processing circuits 3R to 3G, the image signal is subjected to predetermined processing such as A / D conversion, and then output to the TV monitor 100D as a monochrome image for one screen.
[0040]
The above is the imaging process of the electronic endoscope system 100 at the time of flash observation. What should be noted here are the devices that make up the electronic endoscope system 100. The processor 100A merely adds a slight improvement to a control unit and an image signal processing circuit of a conventional processor. Also, the strobe light source device 100C is merely provided with a connector C4 for inputting a control signal from an electronic scope to a conventional strobe light source device. In other words, the electronic endoscope system 100 can be configured using an existing processor or a strobe light source device already used in a hospital or the like if the electronic scope 100B is newly provided, so that the configuration is very simple and inexpensive. It has become.
[0041]
The above is the embodiment of the present invention. In the above-described embodiment, the observation site has been described assuming that the vocal cord is generating one sound. However, the electronic endoscope system 100 is not used only when capturing a vocal cord. For example, it can also be used when imaging other vibrating parts such as a heart that keeps beating.
[0042]
In the above-described embodiment, the microphone M, which is a detecting means for detecting the vibration waveform of the vocal cords, and the light emission control circuit 7 for controlling the strobe light emission timing are provided in the electronic scope 100B. When the microphone M and the like are provided in the electronic scope 100B as in the present embodiment, it is possible to prevent a cable connecting the electronic scope 100B and the strobe light emitting circuit 100C from becoming thick, and to control various signals (such as control signals and Deterioration of a strobe light emission pulse or the like can also be prevented. Here, if the conventional strobe light emitting device is provided with a microphone and a light emission control circuit as standard, the microphone and the light emission control circuit may be used instead of the microphone M and the light emission control circuit 7. Thus, since the conventional strobe light source device can be used as it is, the electronic endoscope system of the present invention can be configured at lower cost.
[0043]
Further, in the above-described embodiment, it has been described that in the flash observation, a state in which the shape of the observation site such as the vocal cords gradually changes is observed as a slow moving image at a predetermined speed. Here, if the value of data regarding how many frames of vocal cord vibration to observe in one frame is set to 0 in the light emission control circuit 7 in advance, the vibration of the observation site corresponding to the phase of the strobe light emission timing is set. The phases of the waveforms are always the same. That is, it is also possible to observe only a specific shape during the vibration of the observation part vibrating at a high speed as a still image.
[0044]
【The invention's effect】
As described above, the electronic endoscope system according to the present invention includes two light sources, and an electronic device that illuminates an observation site by switching continuous light and strobe light emitted from the two light sources in accordance with observation set by an operator. By providing the scope, it is possible to provide an electronic endoscope system that can easily perform normal observation and strobe observation without causing the operator to feel troublesome, which can contribute to the convenience of the operator.
[0045]
In addition, conventionally, two types of endoscope systems for normal observation and endoscope for strobe observation were required, so the space occupied by the endoscope system in the examination room became very large, and the number of wiring cables became large. However, according to the present invention, two images can be taken with one endoscope system, so that space saving and simplification of the wiring configuration are also achieved.
[0046]
Further, the electronic endoscope system of the present invention has a great advantage that the processor and the light source device in the conventional endoscope system can be used as they are or with only a slight improvement. The present invention can be configured at low cost by making the most of existing facilities.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an electronic endoscope system according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of an optical path switching unit according to the embodiment of the present invention.
FIG. 3 is a timing chart related to imaging processing of the electronic endoscope system according to the embodiment of the present invention.
FIG. 4 is a schematic diagram of an image signal processing circuit of the electronic endoscope system according to the embodiment of the present invention.
[Explanation of symbols]
1 Light source
2 control unit
3 Image signal processing circuit
4 Setting section
5 Optical path switching unit
6 Image sensor
7 Light emission control circuit
100 Electronic endoscope system
100A processor
100B electronic scope
100C strobe light source device
LG1, LG2, LG3 Light guide

Claims (13)

A processor having first light emitting means for irradiating continuous light for normal observation of an observation site that vibrates at a high speed with a constant cycle,
A strobe light source device having second light emitting means for irradiating strobe light at a predetermined timing for strobe observation of the observation site,
A setting unit that sets one of the normal observation and the strobe observation as an observation method, a connection unit optically and electrically connected to the first light emitting unit and the second light emitting unit, and the continuous light. An electronic scope having an optical path switching unit that switches an optical path so that only light corresponding to the observation method set by the setting unit out of the strobe light is guided to the illumination unit at the tip. Endoscope system. The electronic endoscope system according to claim 1, further comprising:
Detection means for detecting a vibration waveform of an observation portion vibrating at a high speed with a constant period;
An electronic endoscope system, comprising: first control means for controlling light emission timing of the second light emitting means based on a vibration waveform detected by the detection means. The electronic endoscope system according to claim 2,
An electronic endoscope system, wherein the detecting means and the first control means are provided in the electronic scope. The electronic endoscope system according to claim 2,
The electronic endoscope system, wherein the detection unit and the first control unit are provided in the strobe light source device. The electronic endoscope system according to any one of claims 2 to 4,
The electronic endoscope, wherein the first control means controls the second light emitting means so that a phase of light emission timing of the second light emitting means is shifted by a predetermined amount with respect to the vibration waveform. system. The electronic endoscope system according to any one of claims 2 to 4,
The electronic endoscope system according to claim 1, wherein the first control unit controls the second light emitting unit to emit light at a predetermined phase of the vibration waveform. The electronic endoscope system according to any one of claims 1 to 6,
The processor is configured to control the electronic scope so that imaging corresponding to the observation set by the setting unit is performed, and to perform predetermined processing on an image signal transmitted from the electronic scope, An electronic endoscope system comprising: image signal processing means for outputting to an apparatus. The electronic endoscope system according to claim 7,
The continuous light is light in which R, G, and B lights are sequentially switched at predetermined intervals,
An image signal processing unit configured to perform predetermined processing on an R image signal generated by the R light; an R signal processing unit configured to perform predetermined processing on a G image signal generated by the G light; A B signal processing unit that performs predetermined processing on a B image signal generated by the B light,
At the time of normal observation, the second control means controls the electronic scope and the first light emitting means so that the R, G, and B image signals can be obtained within a cycle of one screen of the external device. The image processing means generates the one-screen color image by simultaneously outputting the R, G, and B image signals processed by the R, G, and B signal processing units to the external device. An electronic endoscope system, comprising: The electronic endoscope system according to claim 8, wherein at the time of strobe observation,
The second control means controls the electronic scope so that imaging is performed once within a cycle of one screen of the external device,
The image processing means performs a predetermined process on an image signal generated by the one-time imaging using any one of the signal processing units, and converts the processed image signal into two other image signals. An electronic endoscope system, wherein the monochrome image for one screen is generated by distributing the image signals to signal processing units and simultaneously outputting image signals from the signal processing units to the external device. The electronic endoscope system according to any one of claims 1 to 9,
The electronic endoscope system, wherein the observation site is a vocal cord. Setting means for setting at least two types of observation methods for an observation site that vibrates at a high speed with a certain period,
A connection unit that is optically and electrically connected to at least two light source devices that emit illumination light corresponding to the at least two types of observation methods,
Light path switching means for guiding only the light path of the illumination light corresponding to the observation method set by the setting means to the lighting section at the tip, of the illumination light emitted from the two light emitting means. Electronic scope. The electronic scope according to claim 11,
The at least two types of observation methods are normal observation and strobe observation,
An electronic scope, wherein the light source device is a first light source device that emits continuous light and a second light source device that emits strobe light. The electronic scope according to claim 12, further comprising:
Detection means for detecting a vibration waveform of the observation site,
An electronic scope, comprising: control means for controlling light emission timing of the second light source device based on the vibration waveform detected by the detection means.

Images