US4867137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic endoscope
Assignee: Olympus Corp
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Filing: 1988-03-15
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Granted: 1989-09-19
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Expires: 2008-03-15
Abstract
Abstract An electronic endoscope includes a solid-state image sensor disposed within the distal end of insertable portion thereof, a picture image processor disposed remote from the solid-state image sensor and a drive circuit for the solid-state image sensor. The electronic endoscope further includes a terminal resistor for impedance matching on input and/or output terminals of the solid-state image sensor within the distal end of the insertable portion thereof, so as to stabilize a signal associated with the solid-state image sensor and obtain a good picture.
Inventors
- 👤 Yutaka Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:49
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/04; A61B1/05; H; H04; H04N; H04N23/00; H04N23/60; H04N23/66; H04N23/50; H04N23/555
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
An electronic endoscope having a solid-state image sensor disposed at the distal end of the insertable portion thereof, characterized in that a terminal resistor for impedance matching is disposed within said distal end, and said terminal resistor is formed by a frame body of said distal end in which said solid-state image sensor is fixed.
Claim 2
Dependent Claim
55 words
An electronic endoscope having a solid-state image sensor disposed at the distal end of the insertable portion thereof, characterized in that a terminal resistor for impedance matching is disposed within said distal end, and said terminal resistor is formed by a frame body of said distal end in which said solid-state image sensor is fixed.
Claim 3
Dependent Claim
18 words
An electronic endoscope according to claim 1 in which said frame body supports a lens for image pickup.
Claim 4
Dependent Claim
57 words
An electronic endoscope according to claim 2 in which said terminal resistor has a value such that an input and/or output impedance at the input and/or output terminal of said solid-state image sensor is nearly equal to an input and/or output characteristic impedance of an input signal line and/or a drive signal line of said image sensor.
Claim 5
Dependent Claim
57 words
An electronic endoscope according to claim 1 in which said terminal resistor has a value such that an input and/or output impedance at the input and/or output terminal of said solid-state image sensor is nearly equal to an input and/or output characteristic impedance of an input signal line and/or a drive signal line of said image sensor.
Claim 6
Dependent Claim
94 words
An electronic endoscope having a solid-state image sensor disposed at the distal end of the insertable portion thereof, characterized in that a terminal resistor for impedance matching is disposed within said distal end, said terminal resistor is connected to the input and/or output terminals of said solid-state image sensor in parallel therewith, said terminal resistor is formed by front and rear frame bodies which constitute a frame body of said distal end thereof and which are electrically separated into a plurality of parts on the input and output terminals of said solid-state image sensor.
Claim 7
Dependent Claim
94 words
An electronic endoscope having a solid-state image sensor disposed at the distal end of the insertable portion thereof, characterized in that a terminal resistor for impedance matching is disposed within said distal end, said terminal resistor is connected to the input and/or output terminals of said solid-state image sensor in parallel therewith, said terminal resistor is formed by front and rear frame bodies which constitute a frame body of said distal end thereof and which are electrically separated into a plurality of parts on the input and output terminals of said solid-state image sensor.
Claim 8
Dependent Claim
57 words
An electronic endoscope according to claim 5 in which said terminal resistor has a value such that an input and/or output impedance at the input and/or output terminal of said solid-state image sensor is nearly equal to an input and/or output characteristic impedance of an input signal line and/or a drive signal line of said image sensor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |