JP2011206078A - Electronic endoscope system and electronic endoscope - Google Patents

Electronic endoscope system and electronic endoscope Download PDF

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JP2011206078A
JP2011206078A JP2010073866A JP2010073866A JP2011206078A JP 2011206078 A JP2011206078 A JP 2011206078A JP 2010073866 A JP2010073866 A JP 2010073866A JP 2010073866 A JP2010073866 A JP 2010073866A JP 2011206078 A JP2011206078 A JP 2011206078A
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electronic endoscope
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Yuji Wada
裕司 和田
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Fujifilm Corp
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Abstract

PROBLEM TO BE SOLVED: To determine the kind of an electronic endoscope installed in a processor by a simple constitution.SOLUTION: An electronic endoscope system has an electronic endoscope, and the processor which has a signal processing means and to which the electronic endoscope is detachable. The electronic endoscope has a plurality of digital signal lines connected to the signal processing means of the processor, and the plurality of digital signal lines are fixed to two levels wherein the respective levels when there is no signal are different. Also, the combination of the levels of these sinal lines are different according to the kind of the electronic endoscope, and the signal processing means has a determination part for determining the kind of the electronic endoscope based on the combination of the levels of the plurality of digital signal lines of the electronic endoscopes installed in the processor.

Description

本発明は電子内視鏡システム及び電子内視鏡に関する。   The present invention relates to an electronic endoscope system and an electronic endoscope.

電子内視鏡システムは、典型的には、ＣＣＤ（Charge Coupled Device）イメージセンサ等を含む撮像装置を搭載した電子内視鏡と、電源や信号処理手段を有し、電子内視鏡が着脱されるプロセッサとを備えている。電子内視鏡は、プロセッサの電源に接続される電源線やプロセッサの信号処理手段に接続される各種のデジタル信号線を含むケーブルを有し、ケーブルの末端に設けられたコネクタを介してプロセッサに装着される。   An electronic endoscope system typically has an electronic endoscope equipped with an imaging device including a CCD (Charge Coupled Device) image sensor and the like, a power source and signal processing means, and the electronic endoscope is attached to and detached from the electronic endoscope system. And a processor. The electronic endoscope has a cable including a power supply line connected to the power supply of the processor and various digital signal lines connected to the signal processing means of the processor, and is connected to the processor via a connector provided at the end of the cable. Installed.

近年では、観察部位等に応じて種々の電子内視鏡が共通のプロセッサに装着される。電子内視鏡は、その種類によって、例えば搭載する撮像装置に含まれるイメージセンサの画素数等が異なり、プロセッサでは、装着される電子内視鏡の種類に応じた信号処理が求められる。そこで、電子内視鏡の種類に応じてプロセッサの信号処理等の設定を自動的に変えるべく、プロセッサに装着される電子内視鏡の種類を判別する技術が種々提案されている。   In recent years, various electronic endoscopes are mounted on a common processor according to an observation site or the like. Depending on the type of electronic endoscope, for example, the number of pixels of the image sensor included in the mounted imaging device differs, and the processor requires signal processing according to the type of electronic endoscope to be mounted. Therefore, various techniques for discriminating the type of electronic endoscope attached to the processor have been proposed in order to automatically change the setting of signal processing of the processor according to the type of electronic endoscope.

特許文献１の電子内視鏡システムは、電子内視鏡の種類を判別するための専用の端子をコネクタに複数設け、電子内視鏡の種類毎に異なる端子を接地電位とし、いずれの端子が接地電位とされているかによって電子内視鏡の種類を判別している。かかる構成では、電子内視鏡の種類と同数の端子が必要となるが、コネクタに設けることのできる端子数はコネクタのサイズとの関係で限りがある。そのため、電子内視鏡の種類の増加に対して端子数が不足してしまう。一方で、端子数を増やすために個々の端子を小型化した場合には、接続の信頼性が低下する。   In the electronic endoscope system of Patent Document 1, a plurality of dedicated terminals for determining the type of the electronic endoscope are provided in the connector, and a different terminal for each type of electronic endoscope is set to the ground potential, and any of the terminals is The type of electronic endoscope is determined depending on whether it is at ground potential. Such a configuration requires the same number of terminals as the type of electronic endoscope, but the number of terminals that can be provided in the connector is limited in relation to the size of the connector. For this reason, the number of terminals is insufficient for an increase in the types of electronic endoscopes. On the other hand, when individual terminals are downsized in order to increase the number of terminals, the connection reliability decreases.

特許文献２の電子内視鏡システム及び特許文献３の電子内視鏡システムは、電子内視鏡の種類を示す識別情報を記憶したＲＯＭを電子内視鏡に設けている。そして、電子内視鏡をプロセッサに装着した際に、ＲＯＭに記憶されている識別情報を、撮像装置から出力される画像信号を伝送する画像信号線を介してプロセッサに伝送している。かかる構成によれば、種類を判別するための専用の端子が不要となり、端子数の不足を解消することができる。しかし、画像信号線を介して伝送される信号から識別情報に関する信号を分離・抽出するために、複雑な信号処理が必要となる。   In the electronic endoscope system of Patent Document 2 and the electronic endoscope system of Patent Document 3, a ROM storing identification information indicating the type of the electronic endoscope is provided in the electronic endoscope. When the electronic endoscope is attached to the processor, the identification information stored in the ROM is transmitted to the processor via an image signal line that transmits an image signal output from the imaging device. According to such a configuration, a dedicated terminal for discriminating the type becomes unnecessary, and the shortage of the number of terminals can be solved. However, in order to separate and extract a signal related to identification information from a signal transmitted through an image signal line, complicated signal processing is required.

特開平７−１１６１１４号公報JP-A-7-116114 特開平６−３３５４４９号公報JP-A-6-335449 特開２００４−４９２５０号公報JP 2004-49250 A

本発明は上述した事情に鑑みなされたものであり、その目的は、プロセッサに装着される電子内視鏡の種類を簡易な構成で判別することにある。   The present invention has been made in view of the above-described circumstances, and an object thereof is to determine the type of electronic endoscope attached to a processor with a simple configuration.

（１） 電子内視鏡と、信号処理手段を有し、前記電子内視鏡が着脱されるプロセッサと、を備え、前記電子内視鏡は、前記プロセッサの信号処理手段に接続される複数のデジタル信号線を有し、前記複数のデジタル信号線は、それぞれの無信号時の電位レベルが異なる２つの電位レベルのいずれかに固定され、かつ電子内視鏡の種類によって、これらの信号線の電位レベルの組み合わせが異なっており、前記信号処理手段は、前記プロセッサに装着された電子内視鏡の前記複数のデジタル信号線の電位レベルの組み合わせに基づいて該電子内視鏡の種類を判別する判別部を有する電子内視鏡システム。
（２） 信号処理手段を有するプロセッサに着脱され、前記信号処理手段に接続される複数のデジタル信号線を有する電子内視鏡であって、前記複数のデジタル信号線は、それぞれの無信号時の電位レベルが異なる２つの電位レベルのいずれかに固定され、かつ電子内視鏡の種類によって、これらの信号線の電位レベルの組み合わせが異なっている電子内視鏡。 (1) An electronic endoscope, and a processor having signal processing means, to which the electronic endoscope is attached and detached, wherein the electronic endoscope is connected to the signal processing means of the processor. A plurality of digital signal lines, each of which is fixed at one of two potential levels different in potential level when no signal is present, and depending on the type of electronic endoscope, The combination of potential levels is different, and the signal processing means determines the type of the electronic endoscope based on the combination of the potential levels of the plurality of digital signal lines of the electronic endoscope attached to the processor. An electronic endoscope system having a determination unit.
(2) An electronic endoscope having a plurality of digital signal lines attached to and detached from a processor having signal processing means and connected to the signal processing means, wherein the plurality of digital signal lines are respectively in a no-signal state. An electronic endoscope in which the combination of the potential levels of these signal lines is different depending on the type of electronic endoscope, which is fixed to one of two potential levels having different potential levels.

本発明によれば、電子内視鏡がプロセッサに装着された際に、プロセッサの信号処理手段に接続される電子内視鏡の複数のデジタル信号線の電位レベルを検出することで、装着された電子内視鏡の種類を判別することができる。即ち、電子内視鏡の種類を示す識別情報に関する信号をデジタル信号線に乗せる必要もなければ、識別情報に関する信号を分離・抽出する必要もなく、装着された電子内視鏡の種類を容易に判別することができる。   According to the present invention, when the electronic endoscope is attached to the processor, the electronic endoscope is attached by detecting potential levels of a plurality of digital signal lines of the electronic endoscope connected to the signal processing means of the processor. The type of electronic endoscope can be determined. In other words, there is no need to place a signal related to identification information indicating the type of electronic endoscope on the digital signal line, and there is no need to separate / extract signals related to identification information, and the type of electronic endoscope attached can be easily set. Can be determined.

本発明の実施形態を説明するための、電子内視鏡システムの一例を示す図。The figure which shows an example of the electronic endoscope system for describing embodiment of this invention. 図１の電子内視鏡システムのブロック図。FIG. 2 is a block diagram of the electronic endoscope system of FIG. 1. 図１の電子内視鏡システムにおける電子内視鏡の種類を判別する判別部のブロック図。The block diagram of the discrimination | determination part which discriminate | determines the kind of electronic endoscope in the electronic endoscope system of FIG. 電子内視鏡の種類の判別に用いられるデータを模式的に示す図。The figure which shows typically the data used for discrimination | determination of the kind of electronic endoscope.

図１に示す電子内視鏡システム１は、電子内視鏡２と、電子内視鏡２が着脱されるプロセッサ３及び光源装置４と、モニタ５と、を備えている。   An electronic endoscope system 1 shown in FIG. 1 includes an electronic endoscope 2, a processor 3 and a light source device 4 to / from which the electronic endoscope 2 is attached / detached, and a monitor 5.

電子内視鏡２は、被検体に挿入される挿入部１０と、挿入部１０に連なる操作部１１と、操作部１１よりのびるユニバーサルコード１２とを有している。ユニバーサルコード１２は、デジタル信号線や電源線やライトガイドなどを内包しており、その末端にはコネクタ１３ａ、１３ｂが設けられている。電子内視鏡２は、コネクタ１３ａを介してプロセッサ３に装着され、また、コネクタ１３ｂを介して光源装置４に装着される。コネクタ１３ａ、１３ｂは、電子内視鏡２の種類によらず同じであり、プロセッサ３及び光源装置４には、種々の電子内視鏡２が装着可能である。   The electronic endoscope 2 includes an insertion unit 10 to be inserted into a subject, an operation unit 11 connected to the insertion unit 10, and a universal cord 12 extending from the operation unit 11. The universal cord 12 includes a digital signal line, a power line, a light guide, and the like, and connectors 13a and 13b are provided at the ends. The electronic endoscope 2 is attached to the processor 3 via the connector 13a, and is attached to the light source device 4 via the connector 13b. The connectors 13 a and 13 b are the same regardless of the type of the electronic endoscope 2, and various electronic endoscopes 2 can be attached to the processor 3 and the light source device 4.

挿入部１０は、先端部２０と、先端部２０の基端側に連なる湾曲部２１と、湾曲部２１と操作部１１とを接続する軟性部２２とを有している。湾曲部２１は、上下左右に湾曲可能に構成されており、湾曲部２１の湾曲は、操作部１１にて操作される。ユニバーサルコード１２に内包されているデジタル信号線や電源線やライトガイドは、操作部１１、軟性部２２、湾曲部２１を経て先端部２０に達している。   The insertion portion 10 includes a distal end portion 20, a bending portion 21 that is continuous with the proximal end side of the distal end portion 20, and a flexible portion 22 that connects the bending portion 21 and the operation portion 11. The bending portion 21 is configured to be able to bend vertically and horizontally, and the bending of the bending portion 21 is operated by the operation unit 11. A digital signal line, a power supply line, and a light guide included in the universal cord 12 reach the distal end portion 20 via the operation portion 11, the flexible portion 22, and the bending portion 21.

図２に示すように、挿入部１０の先端部２０（図１参照）には、観察領域に向けて照明光を射出する照明光学系３０と、撮像装置３１と、が設けられている。撮像装置３１は、ＣＣＤイメージセンサ等の固体撮像素子３２、及びその回路基板３３、並びに対物光学系３４を含んでいる。回路基板３３は、固体撮像素子３２の駆動回路と、固体撮像素子３２の出力信号に対してＣＤＳ（Correlated Double Sampling）やＡＧＣ（Automatic Gain Control）を行う処理回路と、この処理回路の出力信号をデジタル信号に変換するＡＤＣ（Analog-to-Digital Convert）３５とを含んでいる。   As shown in FIG. 2, the distal end portion 20 (see FIG. 1) of the insertion portion 10 is provided with an illumination optical system 30 that emits illumination light toward the observation region, and an imaging device 31. The imaging device 31 includes a solid-state imaging device 32 such as a CCD image sensor, its circuit board 33, and an objective optical system 34. The circuit board 33 includes a driving circuit for the solid-state imaging device 32, a processing circuit for performing CDS (Correlated Double Sampling) and AGC (Automatic Gain Control) on the output signal of the solid-state imaging device 32, and an output signal of the processing circuit. It includes an ADC (Analog-to-Digital Convert) 35 for converting into a digital signal.

光源装置４で生成された照明光は、ライトガイド１４を介して挿入部１０の先端部２０に導光され、このライトガイド１４の先端部に接続された照明光学系３０よって観察領域に照射される。そして、観察領域からの戻り光は対物光学３４によって集光され、固体撮像素子３２上に結像し、固体撮像素子３２は、これを撮像する。固体撮像素子３２の出力信号は、回路基板３３の処理回路にてＣＤＳやＡＧＣの処理がなされ、そしてＡＤＣ３５によってデジタル画像信号に変換される。画像信号は、複数の画像信号線（デジタル信号線）１５を介して、プロセッサ３に伝送される。   Illumination light generated by the light source device 4 is guided to the distal end portion 20 of the insertion portion 10 through the light guide 14 and irradiated to the observation region by the illumination optical system 30 connected to the distal end portion of the light guide 14. The Then, the return light from the observation region is collected by the objective optics 34 and imaged on the solid-state imaging device 32, and the solid-state imaging device 32 images this. The output signal of the solid-state imaging device 32 is subjected to CDS or AGC processing by the processing circuit of the circuit board 33 and is converted into a digital image signal by the ADC 35. The image signal is transmitted to the processor 3 via a plurality of image signal lines (digital signal lines) 15.

プロセッサ３は、信号処理手段４０を有し、信号処理手段４０は、ＤＳＰ（Digital Signal Processor）４１と、ＣＰＵ（Central Processing Unit）４２とを含んでいる。ＤＳＰ４１は、複数の画像信号線１５が接続され、これらの画像信号線１５を介して伝送されるデジタル画像信号が入力される。そして、ＤＳＰ４１は、入力されたデジタル画像信号に対して、種々の画像処理を行って表示画像データを生成し、生成した表示画像データに基づく画像をモニタ５（図１参照）に表示する。ＣＰＵ４２は、ＤＳＰ４１に接続し、また、複数の制御信号線１６を介して撮像装置３１に接続し、ＤＳＰ４１及び撮像装置３１の動作を制御する。   The processor 3 includes signal processing means 40, and the signal processing means 40 includes a DSP (Digital Signal Processor) 41 and a CPU (Central Processing Unit) 42. A plurality of image signal lines 15 are connected to the DSP 41, and a digital image signal transmitted via these image signal lines 15 is input. The DSP 41 performs various image processing on the input digital image signal to generate display image data, and displays an image based on the generated display image data on the monitor 5 (see FIG. 1). The CPU 42 is connected to the DSP 41 and also connected to the imaging device 31 via the plurality of control signal lines 16 to control the operations of the DSP 41 and the imaging device 31.

以下、図３を参照して、プロセッサ３に装着される電子内視鏡２の種類の判別について説明する。   Hereinafter, with reference to FIG. 3, the type determination of the electronic endoscope 2 attached to the processor 3 will be described.

プロセッサ３は、信号処理手段４０に接続される電子内視鏡２の複数のデジタル信号線の電位レベルの組み合わせに基づき電子内視鏡２の種類を判別する。図示の例では、電子内視鏡２は、撮像装置３１のＡＤＣ３５から出力される画像信号を、１０本の画像信号線１５Ｄ０〜１５Ｄ９を介してプロセッサ３のＤＳＰ４１に伝送しており、これら画像信号線１５Ｄ０〜１５Ｄ９を用いて電子内視鏡２の種類を判別している。 The processor 3 determines the type of the electronic endoscope 2 based on a combination of potential levels of a plurality of digital signal lines of the electronic endoscope 2 connected to the signal processing means 40. In the illustrated example, the electronic endoscope 2 transmits the image signal output from the ADC 35 of the imaging device 31 to the DSP 41 of the processor 3 via the ten image signal lines 15 D0 to 15 D9. The type of the electronic endoscope 2 is determined using the image signal lines 15 D0 to 15 D9 .

画像信号線１５Ｄ０〜１５Ｄ９は、それぞれ、プルアップ抵抗１７を介して電源線のうち電源電位とされる電源線１９Ｖｄｄに接続され、又はプルダウン抵抗１８を介して電源線のうち接地電位とされる電源線１９ＧＮＤに接続されている。電子内視鏡２がプロセッサ３に装着され、プロセッサ３の電源が投入されると、画像信号線１５Ｄ０〜１５Ｄ９は、接続している電源線１９Ｖｄｄ又は１９Ｇｎｄに応じて、無信号時（撮像装置３１からの出力がない時）の電位レベルが電源電位又は接地電位に固定される。 The image signal lines 15 D0 to 15 D9 are connected to the power supply line 19 Vdd , which is the power supply potential of the power supply line, via the pull-up resistor 17, or to the ground potential of the power supply line, via the pull-down resistor 18. Connected to the power line 19 GND . When the electronic endoscope 2 is attached to the processor 3 and the power of the processor 3 is turned on, the image signal lines 15 D0 to 15 D9 are not signaled depending on the connected power line 19 Vdd or 19 Gnd. The potential level (when there is no output from the imaging device 31) is fixed to the power supply potential or the ground potential.

ＤＳＰ４１は、コンパレータを含み、電源電位と接地電位との中間に設定される基準レベルと、画像信号線１５Ｄ０〜１５Ｄ９のそれぞれの無信号時の電位レベルとを比較し、画像信号線１５Ｄ０〜１５Ｄ９のそれぞれの無信号時の電位レベルが基準レベルに対して高い（Ｈｉｇｈ）か、低い（Ｌｏｗ）か、をＣＰＵ４２に出力する。 The DSP 41 includes a comparator, and compares the reference level set between the power supply potential and the ground potential with the potential level of each of the image signal lines 15 D0 to 15 D9 when there is no signal, and the image signal line 15 D0. -15 D9 outputs to the CPU 42 whether the potential level at the time of no signal is higher (High) or lower (Low) than the reference level.

画像信号線１５Ｄ０〜１５Ｄ９の無信号時の電位レベルのＨｉｇｈ／Ｌｏｗの組み合わせは電子内視鏡２の種類によって異なっており、換言すれば、画像信号線１５Ｄ０〜１５Ｄ９の電源線１９Ｖｄｄ又は１９Ｇｎｄとの接続の組み合わせが電子内視鏡２の種類によって異なっている。 The combination of high / low of the potential level of the image signal lines 15 D0 to 15 D9 when there is no signal varies depending on the type of the electronic endoscope 2, in other words, the power supply line 19 of the image signal lines 15 D0 to 15 D9. The combination of connection with Vdd or 19 Gnd differs depending on the type of the electronic endoscope 2.

図４に、画像信号線１５Ｄ０〜１５Ｄ９の無信号時の電位レベルのＨｉｇｈ／Ｌｏｗの組み合わせの一例を示す。なお、図４において、画像信号線１５Ｄｎの電位レベルをＤｎ（ｎ＝０〜９）で示している。機種Ａの電子内視鏡２は、画像信号線１５Ｄ０のみＨｉｇｈであり、他の画像信号線１５Ｄ１〜１５Ｄ９はＬｏｗである。機種Ｂの電子内視鏡２は、画像信号線１５Ｄ１のみＨｉｇｈであり、他の画像信号線１５Ｄ０、１５Ｄ２〜１５Ｄ９はＬｏｗである。機種Ｃの電子内視鏡２は、画像信号線１５Ｄ０、１５Ｄ１がＨｉｇｈであり、他の画像信号線１５Ｄ２〜１５Ｄ９はＬｏｗである。１０本の画像信号線１５Ｄ０〜１５Ｄ９を用いた場合に、画像信号線１５Ｄ０〜１５Ｄ９の無信号時の電位レベルのＨｉｇｈ／Ｌｏｗの組み合わせは２１０＝１０２４通りあり、即ち、電子内視鏡２の種類を１０２４種類まで表現することができる。 FIG. 4 shows an example of a combination of high / low potential levels when the image signal lines 15 D0 to 15 D9 are not in signal. In FIG. 4, the potential level of the image signal line 15 Dn is indicated by Dn (n = 0 to 9). In the electronic endoscope 2 of the model A, only the image signal line 15 D0 is High, and the other image signal lines 15 D1 to 15 D9 are Low. In the electronic endoscope 2 of the model B, only the image signal line 15 D1 is High, and the other image signal lines 15 D0 and 15 D2 to 15 D9 are Low. In the electronic endoscope 2 of the model C, the image signal lines 15 D0 and 15 D1 are High, and the other image signal lines 15 D2 to 15 D9 are Low. When ten image signal lines 15 D0 to 15 D9 are used, there are 2 10 = 1024 combinations of high / low of the potential level of the image signal lines 15 D0 to 15 D9 when there is no signal. Up to 1024 types of the endoscope 2 can be expressed.

信号処理手段４０は、電子内視鏡２の種類と画像信号線１５Ｄ０〜１５Ｄ９の無信号時の電位レベルのＨｉｇｈ／Ｌｏｗの組み合わせとを対応付けて記憶したＲＯＭ等の記憶手段４３を含んでいる。この記憶手段４３とＣＰＵ４２とで、電子内視鏡２の種類を判別する判別部が構成される。ＣＰＵ４２は、記憶手段４３を参照し、ＤＳＰ４１から入力される画像信号線１５Ｄ０〜１５Ｄ９の無信号時の電位レベルのＨｉｇｈ／Ｌｏｗの組み合わせに基づいて、プロセッサ３に装着された電子内視鏡２の種類を判別する。そして、例えばＤＳＰ４１における画像処理の設定を判別した電子内視鏡２の種類に応じて変更する。 The signal processing means 40 includes a storage means 43 such as a ROM that stores the type of the electronic endoscope 2 and the combination of high / low potential levels at the time of no signal of the image signal lines 15 D0 to 15 D9 in association with each other. It is out. The storage unit 43 and the CPU 42 constitute a determination unit that determines the type of the electronic endoscope 2. The CPU 42 refers to the storage means 43, and the electronic endoscope mounted on the processor 3 based on the combination of high / low potential levels at the time of no signal of the image signal lines 15 D0 to 15 D 9 input from the DSP 41. 2 types are discriminated. Then, for example, the setting is changed according to the type of the electronic endoscope 2 that has determined the image processing setting in the DSP 41.

このように、電子内視鏡２がプロセッサ３に装着され、プロセッサ３の電源が投入された際に、プロセッサ３の信号処理手段４０に接続される電子内視鏡２の複数の画像信号線１５Ｄ０〜１５Ｄ９の電位レベルを検出することで、装着された電子内視鏡２の種類を判別することができる。即ち、電子内視鏡２の種類を示す識別情報に関する信号を画像信号線１５Ｄ０〜１５Ｄ９に乗せる必要もなければ、識別情報に関する信号を分離・抽出する必要もなく、装着された電子内視鏡２の種類を容易に判別することができる。 As described above, when the electronic endoscope 2 is mounted on the processor 3 and the power of the processor 3 is turned on, the plurality of image signal lines 15 of the electronic endoscope 2 connected to the signal processing means 40 of the processor 3 are used. By detecting the potential levels of D0 to D9 , the type of the electronic endoscope 2 attached can be determined. That is, there is no need to put a signal related to identification information indicating the type of the electronic endoscope 2 on the image signal lines 15 D0 to 15 D9, and there is no need to separate and extract a signal related to identification information, and the mounted electronic endoscope The type of the mirror 2 can be easily determined.

なお、電子内視鏡２の種類の判別に用いられる複数のデジタル信号線は、画像信号線１５Ｄ０〜１５Ｄ９に限られるものではなく、信号処理手段４０に接続される電子内視鏡２の他のデジタル信号線（例えば、ＣＵＰ４２と撮像装置３１とを接続している制御信号線１６）であってもよい。好ましくは、電子内視鏡２の種類の判別に用いられる複数のデジタル信号線は、例えば画像信号等の同種のデジタル信号を伝送するものであり、それによれば、デジタル信号線の電位レベルの検出を一元的に効率よく行うことができる。 Note that the plurality of digital signal lines used for determining the type of the electronic endoscope 2 is not limited to the image signal lines 15 D0 to 15 D9 , and the electronic endoscope 2 connected to the signal processing means 40 is not limited to the image signal lines 15 D0 to 15 D9 . Another digital signal line (for example, the control signal line 16 connecting the CUP 42 and the imaging device 31) may be used. Preferably, the plurality of digital signal lines used for discriminating the type of the electronic endoscope 2 transmit the same kind of digital signal such as an image signal, and according to this, the detection of the potential level of the digital signal line is performed. Can be performed in an integrated and efficient manner.

以上、説明したように、本明細書には、電子内視鏡と、信号処理手段を有し、前記電子内視鏡が着脱されるプロセッサと、を備え、前記電子内視鏡は、前記プロセッサの信号処理手段に接続される複数のデジタル信号線を有し、前記複数のデジタル信号線は、それぞれの無信号時の電位レベルが異なる２つの電位レベルに固定され、かつ電子内視鏡の種類によって、これらの信号線の電位レベルの組み合わせが異なっており、前記信号処理手段は、前記プロセッサに装着された電子内視鏡の前記複数のデジタル信号線の電位レベルの組み合わせに基づいて該電子内視鏡の種類を判別する判別部を有する電子内視鏡システムが開示されている。   As described above, the present specification includes an electronic endoscope and a processor having signal processing means to which the electronic endoscope is attached and detached, and the electronic endoscope includes the processor A plurality of digital signal lines connected to the signal processing means, the plurality of digital signal lines being fixed at two potential levels different in potential level when no signal is present, and the type of electronic endoscope Depending on the combination of the potential levels of the plurality of digital signal lines of the electronic endoscope mounted on the processor. An electronic endoscope system having a determination unit for determining the type of endoscope is disclosed.

また、本明細書に開示された電子内視鏡システムは、前記電子内視鏡が、撮像装置を有し、前記複数のデジタル信号線が、前記撮像装置から出力される画像信号を伝送する画像信号線である。   In the electronic endoscope system disclosed in this specification, the electronic endoscope includes an imaging device, and the plurality of digital signal lines transmit an image signal output from the imaging device. It is a signal line.

また、本明細書には、信号処理手段を有するプロセッサに着脱され、前記信号処理手段に接続される複数のデジタル信号線を有する電子内視鏡であって、前記複数のデジタル信号線は、それぞれの無信号時の電位レベルが異なる２つの電位レベルに固定され、かつ電子内視鏡の種類によって、これらの信号線の電位レベルの組み合わせが異なっている電子内視鏡が開示されている。   Further, the present specification includes an electronic endoscope having a plurality of digital signal lines attached to and detached from a processor having signal processing means and connected to the signal processing means, wherein the plurality of digital signal lines are respectively There is disclosed an electronic endoscope in which the potential level at the time of no signal is fixed to two different potential levels and the combination of the potential levels of these signal lines differs depending on the type of the electronic endoscope.

また、本明細書に開示された電子内視鏡は、撮像装置を有し、前記複数のデジタル信号線は、前記撮像装置から出力される画像信号を伝送する画像信号線である。   The electronic endoscope disclosed in this specification includes an imaging device, and the plurality of digital signal lines are image signal lines that transmit image signals output from the imaging device.

１ 電子内視鏡システム
２ 電子内視鏡
３ プロセッサ
４ 光源装置
５ モニタ
１０ 挿入部
１１ 操作部
１２ ユニバーサルコード
１３ａ コネクタ
１３ｂ コネクタ
１４ ライトガイド
１５ 画像信号線
１６ 制御信号線
１７ プルアップ抵抗
１８ プルダウン抵抗
１９ 電源線
２０ 先端部
２１ 湾曲部
２２ 軟性部
３０ 照明光学系
３１ 撮像装置
３２ 固体撮像素子
３３ 回路基板
３４ 対物光学系
４０ 信号処理手段
４３ 記憶手段 DESCRIPTION OF SYMBOLS 1 Electronic endoscope system 2 Electronic endoscope 3 Processor 4 Light source device 5 Monitor 10 Insertion part 11 Operation part 12 Universal cord 13a Connector 13b Connector 14 Light guide 15 Image signal line 16 Control signal line 17 Pull-up resistance 18 Pull-down resistance 19 Power line 20 Tip portion 21 Bending portion 22 Flexible portion 30 Illumination optical system 31 Imaging device 32 Solid-state imaging device 33 Circuit board 34 Objective optical system 40 Signal processing means 43 Storage means

Claims (4)

電子内視鏡と、
信号処理手段を有し、前記電子内視鏡が着脱されるプロセッサと、
を備え、
前記電子内視鏡は、前記プロセッサの信号処理手段に接続される複数のデジタル信号線を有し、
前記複数のデジタル信号線は、それぞれの無信号時の電位レベルが異なる２つの電位レベルのいずれかに固定され、かつ電子内視鏡の種類によって、これらの信号線の電位レベルの組み合わせが異なっており、
前記信号処理手段は、前記プロセッサに装着された電子内視鏡の前記複数のデジタル信号線の電位レベルの組み合わせに基づいて該電子内視鏡の種類を判別する判別部を有する電子内視鏡システム。 An electronic endoscope,
A processor having signal processing means to which the electronic endoscope is attached and detached;
With
The electronic endoscope has a plurality of digital signal lines connected to the signal processing means of the processor,
The plurality of digital signal lines are fixed to one of two potential levels different in potential level when there is no signal, and the combination of the potential levels of these signal lines differs depending on the type of electronic endoscope. And
The electronic endoscope system having a determination unit that determines the type of the electronic endoscope based on a combination of potential levels of the plurality of digital signal lines of the electronic endoscope attached to the processor. . 請求項１に記載の電子内視鏡システムであって、
前記電子内視鏡は、撮像装置を有し、
前記複数のデジタル信号線は、前記撮像装置から出力される画像信号を伝送する画像信号線である電子内視鏡システム。 The electronic endoscope system according to claim 1,
The electronic endoscope has an imaging device,
The electronic endoscope system, wherein the plurality of digital signal lines are image signal lines that transmit image signals output from the imaging device. 信号処理手段を有するプロセッサに着脱され、前記信号処理手段に接続される複数のデジタル信号線を有する電子内視鏡であって、
前記複数のデジタル信号線は、それぞれの無信号時の電位レベルが異なる２つの電位レベルのいずれかに固定され、且つ電子内視鏡の種類によって、これらの信号線の電位レベルの組み合わせが異なっている電子内視鏡。 An electronic endoscope having a plurality of digital signal lines attached to and detached from a processor having signal processing means and connected to the signal processing means,
The plurality of digital signal lines are fixed to one of two potential levels that have different potential levels when there is no signal, and the combination of the potential levels of these signal lines varies depending on the type of electronic endoscope. Electronic endoscope. 請求項３に記載の電子内視鏡であって、
撮像装置を有し、
前記複数のデジタル信号線は、前記撮像装置から出力される画像信号を伝送する画像信号線である電子内視鏡装置。 The electronic endoscope according to claim 3,
Having an imaging device;
The electronic endoscope apparatus, wherein the plurality of digital signal lines are image signal lines that transmit an image signal output from the imaging apparatus.
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Publication number Priority date Publication date Assignee Title
JPH06335449A (en) * 1993-05-31 1994-12-06 Olympus Optical Co Ltd Electronic endoscope equipment
JPH09305937A (en) * 1996-05-10 1997-11-28 Canon Inc Recording or reproducing apparatus
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JP2005204741A (en) * 2004-01-20 2005-08-04 Olympus Corp Electronic endoscope apparatus
JP2006113794A (en) * 2004-10-14 2006-04-27 Saxa Inc Device and unit
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