Patent US3886562A successfully refreshed from Google Patents.
US3886562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote position indicator for follow-up devices in recording systems
Assignee: Picker International GmbH
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Filing: 1974-02-08
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Granted: 1975-05-27
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Expires: 1994-02-08
Abstract
Abstract A remote-position indicator for follow-up devices in recording systems. There is disclosed a system for recording input electrical signals by positioning galvanometer pen styli on chart paper in accordance with the input signals. Each pen is mechanically linked to an optical mask. The optical mask in conjunction with an optical system provides a feedback light signal, which is converted to a feedback electrical signal for nulling the input signal.
Inventors
- 👤 Wolfgang Atzinger
- 👤 Heinz Reetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:18
CPC Classifications
G; G01; G01D; G01D3/00; G01D3/06; G01R; G01R13/00; G01R13/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
186 words
A remote position indicator capable of use in a recording system comprising electrical input signal means for accepting and amplifying an electrical input signal, a rotatable shaft, means for positioning said shaft by converting said signal to rotational motion of said shaft, means connected to said shaft for indicating said position an optical mask affixed To said shaft, said mask containing apertures arranged along separate paths, light source means fixedly positioned relative to motion of said shaft for shining light upon said mask and through not more than one of said apertures of each of said paths at a given time as a function of shaft position, means for detecting said shined-through light and for converting said shined-through light to electrical signals, said input signal means including means for counting said electrical signals from each of said paths and responsive to the relative times of occurrence of said feedback electrical signals for increasing and decreasing the total count, means for converting said total count to an analog signal, and means for comparing said analog signal and said electrical input signal for controlling said shaft positioning means.
Claim 2
Dependent Claim
186 words
A remote position indicator capable of use in a recording system comprising electrical input signal means for accepting and amplifying an electrical input signal, a rotatable shaft, means for positioning said shaft by converting said signal to rotational motion of said shaft, means connected to said shaft for indicating said position an optical mask affixed To said shaft, said mask containing apertures arranged along separate paths, light source means fixedly positioned relative to motion of said shaft for shining light upon said mask and through not more than one of said apertures of each of said paths at a given time as a function of shaft position, means for detecting said shined-through light and for converting said shined-through light to electrical signals, said input signal means including means for counting said electrical signals from each of said paths and responsive to the relative times of occurrence of said feedback electrical signals for increasing and decreasing the total count, means for converting said total count to an analog signal, and means for comparing said analog signal and said electrical input signal for controlling said shaft positioning means.
Claim 3
Independent Claim
236 words
A system for recording at least one electrical signal, said system comprising: means for amplifying said signal; means for applying said electrical signal to an input of said amplifying means; electro-mechanical means responsive to output of said amplifying means for registering said amplified electrical signal; said electro-mechanical means including chart paper means and galvanometer pen means for scribing a representation of said electrical signal on said chart paper means; optical feedback means responsive to operation of said electro-mechanical means for generating feedback light signals related to amplitude of said electrical signal; said optical feedback means including an optical mask containing apertures arranged along separate paths, light source means for shining light upon said mask and through not more than one of said apertures of each of said paths at a given time, means for positioning said mask relative to said light source means and thereby controlling said feedback light signals through said apertures; means for detecting said feedback light signals and for converting said feedback light signals to feedback electrical signals; said amplifying means including means for counting said feedback electrical signals from each of said paths and responsive to the relative times of occurrence of said feedback electrical signals for increasing and decreasing the total count, means for converting said total count to an analog signal, and means for comparing said analog signal and said electrical signal for generating said output of said amplifying means.
Claim 4
Independent Claim
236 words
A system for recording at least one electrical signal, said system comprising: means for amplifying said signal; means for applying said electrical signal to an input of said amplifying means; electro-mechanical means responsive to output of said amplifying means for registering said amplified electrical signal; said electro-mechanical means including chart paper means and galvanometer pen means for scribing a representation of said electrical signal on said chart paper means; optical feedback means responsive to operation of said electro-mechanical means for generating feedback light signals related to amplitude of said electrical signal; said optical feedback means including an optical mask containing apertures arranged along separate paths, light source means for shining light upon said mask and through not more than one of said apertures of each of said paths at a given time, means for positioning said mask relative to said light source means and thereby controlling said feedback light signals through said apertures; means for detecting said feedback light signals and for converting said feedback light signals to feedback electrical signals; said amplifying means including means for counting said feedback electrical signals from each of said paths and responsive to the relative times of occurrence of said feedback electrical signals for increasing and decreasing the total count, means for converting said total count to an analog signal, and means for comparing said analog signal and said electrical signal for generating said output of said amplifying means.
Claim 5
Dependent Claim
18 words
A system as recited in claim 2 and wherein said positioning means includes means for rotating said mask.
Claim 6
Dependent Claim
17 words
A system as recited in claim 2 and wherein said detecting and converting means includes phototransistor means.
Claim 7
Dependent Claim
24 words
A system as recited in claim 2 and wherein said amplifier means includes switching amplifier means for generating said output of said amplifying means.
Claim 8
Dependent Claim
31 words
A system as recited in claim 2 and wherein said comparing means generates a substantially zero output signal when said feedback electrical signal and said amplified electrical signal are substantially equal.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |