Electronic-type endoscope system having capability of setting AGC variation region
First Claim
1. An electronic-type endoscope system comprising:
- (a) an electronic endoscope includingan elongated inserting section,light emitting means for emitting illuminating light from one end of said inserting section, andimaging means constituted by an objective optical system attached to said one end of said inserting section and a solid state imaging device for photoelectrically converting an optical image obtained by said objective optical system;
(b) signal processing means for converting an image signal output from said imaging means into a standard image signal;
(c) monitor means for providing a display of said standard image signal output from said signal processing means;
(d) automatic gain control means constituting said signal processing means and arranged to automatically output said standard image signal whose level is automatically adjusted to a proper level in accordance with a level of said image signal; and
(e) gain variation region setting means for setting a gain variation region of said automotive gain control means based upon a control signal representing characteristics of an apparatus to be connected.
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Accused Products
Abstract
An endoscope system has a signal processing circuit for converting an image signal output of a solid state imaging device into a standard image signal, a monitor for providing a display of the standard image signal, an automatic gain control circuit for outputting an image signal whose level is automatically adjusted in accordance with the level of the image signal; and a gain variation region setting circuit for outputting a control signal to set the gain variation region of the automatic gain control circuit. With this arrangement, it is possible to properly set the AGC variation region of the AGC of the signal processing apparatus in accordance with such factors as the number of pixels of the solid state imaging device which constitutes a part of an electronic endoscope connected.
129 Citations
23 Claims
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1. An electronic-type endoscope system comprising:
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(a) an electronic endoscope including an elongated inserting section, light emitting means for emitting illuminating light from one end of said inserting section, and imaging means constituted by an objective optical system attached to said one end of said inserting section and a solid state imaging device for photoelectrically converting an optical image obtained by said objective optical system; (b) signal processing means for converting an image signal output from said imaging means into a standard image signal; (c) monitor means for providing a display of said standard image signal output from said signal processing means; (d) automatic gain control means constituting said signal processing means and arranged to automatically output said standard image signal whose level is automatically adjusted to a proper level in accordance with a level of said image signal; and (e) gain variation region setting means for setting a gain variation region of said automotive gain control means based upon a control signal representing characteristics of an apparatus to be connected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electronic-type endoscope comprising:
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a first electronic endoscope including a first objective optical system and a first light emitting means both of which are disposed at a front end portion of a first elongated inserting section as well as a first imaging means constituted by a first solid state imaging device for photoelectrically converting an optical image obtained by said first objective optical system; a second electronic endoscope including a second objective optical system and a second light emitting means both of which are disposed at a front end portion of a second elongated inserting section as well as a second imaging means constituted by a second solid state imaging device for photoelectrically converting an optical image obtained by said second objective optical system; signal processing means for converting image signals output form said first and second imaging means into standard image signals; monitor means for providing a display of said standard image signals output from said signal processing means; automatic gain control means constituting said signal processing means and arranged to automatically output image signals whose levels are automatically adjusted to proper levels in accordance with levels of said respective image signals; and gain variation region setting means for outputting a plurality of control signals to set a gain variation region of said automatic gain control means to a plurality of gain regions. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification