Patent US4933757A successfully refreshed from Google Patents.
US4933757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic endoscope apparatus provided with a movement detecting means
Assignee: Olympus Corp
•
Filing: 1989-07-12
•
Granted: 1990-06-12
•
Expires: 2009-07-12
Abstract
Abstract There is disclosed an endoscope apparatus wherein it is judged whether a still picture is to be displayed or not for the movement quantity from a movement detecting circuit wherein difference signals are produced between pixels approaching a plurality of image signals of the same object imaged at different times and further the correlation between the corresponding difference signals is detected and is then quantified in a period of one field/frame.
Inventors
- 👤 Masahide Kanno
- 👤 Masao Uehara
- 👤 Masahiko Sasaki
- 👤 Katsuyuki Saito
- 👤 Akinobu Uchikubo
- 👤 Shinji Yamashita
- 👤 Katsuyoshi Sasagawa
- 👤 Jun Hasegawa
- 👤 Takehiro Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:32
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/50; H04N23/555; H04N23/60; H04N23/68; H04N23/682; H04N23/684; H04N23/681; H04N23/6811; H04N23/683
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
242 words
An electronic endoscope apparatus comprising: an electronic endoscope provided with: an elongate insertable part, an objective optical system provided on the tip side of said insertable part and forming an image of an object, an imaging device for photoelectrically converting the image based on said objective optical system and an illuminating light emitting means for emitting an illuminating light from the tip side of said insertable part; a driving signal outputting means for outputting a driving signal outputting an image signal from said imaging device; a video signal processing means having an image memorizing means for temporarily memorizing said image signal as a still picture and producing a standard video signal from said image signal; a movement detecting circuit formed of: a displaying means for displaying said standard video signal on a monitor picture; a difference signal producing means for producing difference signals of pixels approaching a plurality of respective image signals representing the images of the object imaged at different times by said imaging means; a correlation detecting means for detecting a correlation quantity between the corresponding plurality of difference signals proaduced by said difference signal producing means; and output detected by said correlation detecting means; and a quantifying means for quantifying the signal an image memorizing controlling means for controlling whether the image signal is memorized or not as a still picture in said image memorizing means on the basis of the movement quantity output from said movement detecting circuit.
Claim 2
Dependent Claim
242 words
An electronic endoscope apparatus comprising: an electronic endoscope provided with: an elongate insertable part, an objective optical system provided on the tip side of said insertable part and forming an image of an object, an imaging device for photoelectrically converting the image based on said objective optical system and an illuminating light emitting means for emitting an illuminating light from the tip side of said insertable part; a driving signal outputting means for outputting a driving signal outputting an image signal from said imaging device; a video signal processing means having an image memorizing means for temporarily memorizing said image signal as a still picture and producing a standard video signal from said image signal; a movement detecting circuit formed of: a displaying means for displaying said standard video signal on a monitor picture; a difference signal producing means for producing difference signals of pixels approaching a plurality of respective image signals representing the images of the object imaged at different times by said imaging means; a correlation detecting means for detecting a correlation quantity between the corresponding plurality of difference signals proaduced by said difference signal producing means; and output detected by said correlation detecting means; and a quantifying means for quantifying the signal an image memorizing controlling means for controlling whether the image signal is memorized or not as a still picture in said image memorizing means on the basis of the movement quantity output from said movement detecting circuit.
Claim 3
Dependent Claim
39 words
An electronic endoscope apparatus according to claim 1 wherein said movement detecting circuit has further an n-valuing means for n-valuing the respective difference signals into integers n of at least 2 and outputting them to said correlation detecting means.
Claim 4
Dependent Claim
32 words
An electronic endoscope apparatus according to claim 1 or 2 wherein said electronic endoscope is an electronid scope having said imaging device arranged in the focal plane of said objective optical system.
Claim 5
Dependent Claim
59 words
An electronic endoscope apparatus according to claim 1 or 2 wherein said electronic endoscope is a television camera externally fitted scope formed of a fiber scope provided with an image guide transmitting an optical image by said objective optical system and a television camera fittable to the eyepiece part of said fiber scope and having said imaging device built-in.
Claim 6
Dependent Claim
20 words
An electronic endoscope apparatus according to claim 1 or 2 wherein said light emitting means emits a white color light.
Claim 7
Dependent Claim
25 words
An electronic endoscope apparatus according to claim 1 or 2 wherein said light emitting means sequentially emits lights of wavelength regions different from each other.
Claim 8
Dependent Claim
33 words
An electronic endoscope apparatus according to claim 1 having a low level region suppressing means for suppressing signals in the low level region on the front step side of said correlation detecting means.
Claim 9
Dependent Claim
33 words
An electronic endoscope apparatus accordig to claim 2 having a low level region suppressing means for suppressing signals in the low level region on the front step side of said correlation detecting means.
Claim 10
Dependent Claim
29 words
An electronic endoscope apparatus according to claim 1 wherein said difference signal producing means is a subtracting means for subtracting a non-delayed image signal and a delayed image signal.
Claim 11
Dependent Claim
26 words
An electronic endoscope apparatus according to claim 1 or 2 further having an image region setting means for detecting the movement of said movement detecting circuit.
Claim 12
Dependent Claim
66 words
An electronic endoscope apparatus according to claim 1 or 2 wherein said image memorizing controlling means has a judging means for judging whether the movement quantity of said movement detecting circuit is within a preset allowable reference value or not and controls said image memorizing means to hold a still picture in case said judging means judges the movement quantity to be within said reference value.
Claim 13
Dependent Claim
46 words
An elecronic endoscope apparatus according to claim 1 or 2 wherein said image memorizing controlling means has a least movement quantity detecting means for holding as a still picture in said image memmorizing means an image signal of the least movement quantity within a set time.
Claim 14
Dependent Claim
28 words
An electronic endoscope apparatus according to claim 12 having a detecting time changing means for changing the time for detecting the image signal of the least movement quantity.
Claim 15
Dependent Claim
29 words
An electronic endoscope apparatus according to claim 1 or 2 wherein said movement detecting means detects the movement between a plurality of image signals in the same wavelength region.
Claim 16
Dependent Claim
28 words
An electronic endoscope apparatus according to claim 1 or 2 wherein said movement detecting circuit detects the movement between a plurality of image signals in different wavelength regions.
Claim 17
Dependent Claim
69 words
A movement detecting circuit comprising: a difference signal producing means for producing difference signals between pixels approaching a plurality of image signals representing images of an object imaged at different times; a correlation detecting means for detecting the correlation quantity between the corresponding plurality of difference signals produced by said difference signal producing means; and a quantifying means for quantifying the signal output detected by said correlation detecting means.
Claim 18
Dependent Claim
69 words
A movement detecting circuit comprising: a difference signal producing means for producing difference signals between pixels approaching a plurality of image signals representing images of an object imaged at different times; a correlation detecting means for detecting the correlation quantity between the corresponding plurality of difference signals produced by said difference signal producing means; and a quantifying means for quantifying the signal output detected by said correlation detecting means.
Claim 19
Dependent Claim
34 words
A movement detecting circuit according to claim 16 further having an n-valuing means for n-valuing the respective difference signals into integers n of at least 2 and outputting them to said correlation detecting means.
Claim 20
Dependent Claim
35 words
A movement detecting circuit according to claim 16 further having a low level region suppressing means for supppressing the signals in the low level region on the front step side of said correlation detecting means.
Claim 21
Dependent Claim
35 words
A movement detecting circuit according to claim 17 further having a low level region suppressing means for suppressing the signals in the low level region on the front step side of said correlation detecting means.
Claim 22
Dependent Claim
38 words
A movement detecting circuit according to claim 16 wherein said difference signal producing means is a subtracting means for subtracting a non-delayed image signal and an image signal delayed by one or several pixels by the delaying means.
Claim 23
Dependent Claim
34 words
A movement detecting circuit according to claim 17 wherein said quantifying means is a counter for counting clocks of a fixed cycle on one of the two valued levels of said correlation detecting means.
Claim 24
Dependent Claim
28 words
A movement detecting circuit according to claim 16 or 18 wherein said quantifying means is an integrating means for making an integration for a period of one field/frame.
Claim 25
Dependent Claim
37 words
A movement detecting circuit according to claim 19 wherein said low level region suppressing means is an ROM in which data outputting an output signal suppressed in the low level region for an input signal are written.
Claim 26
Dependent Claim
34 words
A movement detecting circuit according to claim 19 wherein said low level region suppressing means neglects a single bit or a plurality of bits on the least significant bit side of said n-valued signal.
Claim 27
Dependent Claim
59 words
A movement detecting circuit according to claim 16 or 17 further having a discriminating means for discriminating whether the level of at least one difference signal of said difference signal producing means is within a fixed range or not and having a controlling means for detecting said correlation only in the difference signal period deviating from the fixed range.
Claim 28
Dependent Claim
26 words
A movement detecting circuit according to claim 25 having a standardizing means for standardizing the output signal of said quantifying means in said difference signal period.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |