US3609318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital control system for scanning sheet material
Assignee: Honeywell Measurex Corp
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Filing: 1969-02-13
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Granted: 1971-09-28
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Expires: 1989-02-13
Abstract
Abstract Digital control system for scanning sheet material having provision for computer control, scanning head alignment error detection, control of scan increments, off-sheet demand and single-point positioning.
Inventors
- 👤 Eugene R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:25
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/18; G05D3/183; G01; G01B; G01B21/00; G01B21/02; G01B21/08; G05D3/20; G06; G06F; G06F7/00; G06F7/60; G06F7/62; Y; Y10; Y10S; Y10S162/00; Y10S162/09; Y10S162/10; Y10S162/11
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
A digital control system for scanning sheet material one edge of said sheet being proximate to a lower scan limit and the other edge proximate to an upper scan limit, said system comprising; first and second scanning head means located in juxtaposition on opposed sides of said sheet material, motor means coupled to said head means for driving said head means across said sheet material at a predetermined speed, means coupled to said motor means having an output signal with a pulse-repetition rate proportional to said speed of said head means, first and second limit sensor means for sensing the respective arrivals of said first and second scanning-head means at one of said lower and upper limits for producing respective indications of said arrivals, and counting means, driven at said pulse-repetition rate, and responsive to said arrival indication first in time to start to count and to said arrival indication last in time to stop whereby said count of said counter means represents the alignment error between said two head means.
Claim 2
Dependent Claim
171 words
A digital control system for scanning sheet material one edge of said sheet being proximate to a lower scan limit and the other edge proximate to an upper scan limit, said system comprising; first and second scanning head means located in juxtaposition on opposed sides of said sheet material, motor means coupled to said head means for driving said head means across said sheet material at a predetermined speed, means coupled to said motor means having an output signal with a pulse-repetition rate proportional to said speed of said head means, first and second limit sensor means for sensing the respective arrivals of said first and second scanning-head means at one of said lower and upper limits for producing respective indications of said arrivals, and counting means, driven at said pulse-repetition rate, and responsive to said arrival indication first in time to start to count and to said arrival indication last in time to stop whereby said count of said counter means represents the alignment error between said two head means.
Claim 3
Dependent Claim
20 words
A digital control system as in claim 1 including reference means for comparing said count with a preset reference count.
Claim 4
Dependent Claim
21 words
A digital control system as in claim 2 including warning means for indicating if said count exceeds said preset reference count.
Claim 5
Dependent Claim
37 words
A digital control system as in claim 1 including third limit sensor means for sensing the arrival of a scanning head means at one of said limits for reversing the direction of scan across said sheet material.
Claim 6
Dependent Claim
133 words
A digital control system for scanning sheet material one edge of said sheet being proximate to a lower scan limit and the other edge proximate to an upper scan limit, said system comprising; first and second scanning head means located in juxtaposition to said sheet material, motor means coupled to said head means for driving said head means across said sheet material at a predetermined speed, means coupled to said motor means having an output signal with a pulse-repetition rate proportional to said speed of said head means, modulo-divider means for incrementing the linear distance between said upper and lower scan limits into a predetermined number of increments, and means coupled to and responsive to said modulo divider means for indicating the increment of said sheet material being scanned by said head means.
Claim 7
Dependent Claim
133 words
A digital control system for scanning sheet material one edge of said sheet being proximate to a lower scan limit and the other edge proximate to an upper scan limit, said system comprising; first and second scanning head means located in juxtaposition to said sheet material, motor means coupled to said head means for driving said head means across said sheet material at a predetermined speed, means coupled to said motor means having an output signal with a pulse-repetition rate proportional to said speed of said head means, modulo-divider means for incrementing the linear distance between said upper and lower scan limits into a predetermined number of increments, and means coupled to and responsive to said modulo divider means for indicating the increment of said sheet material being scanned by said head means.
Claim 8
Dependent Claim
40 words
A digital control system as in claim 5 in which said head means includes means for irradiating said sheet material and including means for coupling said increment-indicating means to said head means for activating said irradiating means for each increment.
Claim 9
Dependent Claim
50 words
A digital control system as in claim 5 including emergency off-sheet demand means for causing said motor means to move said head means to one of said limits including means coupled to said increment-indicating means for causing said head means to move toward the closest one of said scan limits.
Claim 10
Dependent Claim
37 words
A digital control system as in claim 5 including selector switch means coupled to said increment-indicating means for causing said motor to drive said head means to a single increment as selected by said selector switch 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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |