Patent US3296819A successfully refreshed from Google Patents.
US4879992A
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US
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Rigid electronic endoscope
Assignee: Olympus Corp
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Filing: 1988-04-26
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Granted: 1989-11-14
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Expires: 2008-04-26
Abstract
Abstract This rigid electronic endoscope has an endoscope having an elongate insertable part connected to the front part of an operating part which is also a holding part on the base side and formed of a solid state imaging device which can output an electric signal by electrically converting an object image in this insertable part and a conductive shielding member sheathing this insertable part. The electric signal obtained by this endoscope is input into a signal processing circuit. The ground terminal of this signal processing circuit is electrically connected to the above mentioned shielding member and is isolated from a ground terminal on the external current source side.
Inventors
- 👤 Shinichi Nishigaki
- 👤 Takeaki Nakamura
- 👤 Jun Yoshinaga
- 👤 Masahide Kanno
- 👤 Hisao Yabe
- 👤 Takeshi Yokoi
- 👤 Kazuhiko Oozeki
- 👤 Yoshikazu Tojo
- 👤 Hiromasa Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:55
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/04; A61B1/05
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
A rigid electronic endoscope, comprising: an endoscope having an elongated insertable portion which is connected to a front portion of an operating part, a holding part on an end portion of said endoscope, a solid state imaging means for outputting an electrical signal by electrically converting an object image within said insertable portion, and a sheath means of said insertable portion for forming a conductive shielding means; a signal processing means connected to said imaging means, for processing said electrical signal obtained by said endoscope, said signal processing means having a first ground terminal means; and an external current source means connected to said signal processing means, said external current source means having a second ground terminal means, said shielding means being connected to said second ground terminal means, wherein said first ground terminal means and said second ground terminal means are isolated from each other for preventing high frequency waves on said sheath means from effecting said electrical signal output of said endoscope.
Claim 2
Dependent Claim
164 words
A rigid electronic endoscope, comprising: an endoscope having an elongated insertable portion which is connected to a front portion of an operating part, a holding part on an end portion of said endoscope, a solid state imaging means for outputting an electrical signal by electrically converting an object image within said insertable portion, and a sheath means of said insertable portion for forming a conductive shielding means; a signal processing means connected to said imaging means, for processing said electrical signal obtained by said endoscope, said signal processing means having a first ground terminal means; and an external current source means connected to said signal processing means, said external current source means having a second ground terminal means, said shielding means being connected to said second ground terminal means, wherein said first ground terminal means and said second ground terminal means are isolated from each other for preventing high frequency waves on said sheath means from effecting said electrical signal output of said endoscope.
Claim 3
Dependent Claim
18 words
A rigid electronic endoscope according to claim 1 wherein said insertable portion is inserted in a jacket tube.
Claim 4
Dependent Claim
18 words
A rigid electronic endoscope according to claim 2 wherein said jacket tube is isolated from said shielding means.
Claim 5
Dependent Claim
28 words
A rigid electronic endoscope according to claim 1 wherein a dummy cable for removing noises is electrically connected to said solid state imaging means and signal processing means.
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) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |