Patent US1575346A successfully refreshed from Google Patents.
Patent US4804899A successfully refreshed from Google Patents.
US4804899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna rotator controllers and conversion systems therefor
Assignee: GERARD A WURDACK & ASSOCIATES Inc ST LOUIS MO A CORP OF MO
•
Filing: 1987-05-18
•
Granted: 1989-02-14
•
Expires: 2007-05-18
Abstract
Abstract A conversion system for a controller for an antenna rotator which includes circuitry for generating an analog signal which varies as a function of the angular position of the antenna. The conversion system includes circuitry for converting the analog signal to a corresponding first digital signal representative of the angular position of the antenna relative to a first reference heading of the antenna. The conversion system also includes storage circuitry having a prestored table of digital values of angular positions of the antenna relative to a second reference heading of the antenna and which in response to the first digital signal produces a second digital signal corresponding to one of the prestored digital values, the second digital signal thereby being representative of the angular position of the antenna relative to the second reference heading. A digital display system and controller for an antenna rotator are also disclosed.
Inventors
- 👤 Gerard A Wurdack
- 👤 Frank F. Helton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:32
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/33; G05B19/35; G05B19/351; G05B2219/00; G05B2219/30; G05B2219/42; G05B2219/42212; G05B2219/45; G05B2219/45179
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
129 words
A conversion system for a controller for an antenna rotator which includes means for generating an analog signal varying as a function of the angular position of the antenna, the conversion system comprising: means for converting the analog signal to a corresponding first digital signal representative of the angular position of the antenna relative to a first reference heading of the antenna; and storage means having a prestored table of digital values of angular positions of the antenna relative to a second reference heading of the antenna and which in response to the first digital signal produces a second digital signal corresponding to one of the prestored digital values, the second digital signal thereby being representative of the angular position of the antenna relative to the second reference heading.
Claim 2
Dependent Claim
129 words
A conversion system for a controller for an antenna rotator which includes means for generating an analog signal varying as a function of the angular position of the antenna, the conversion system comprising: means for converting the analog signal to a corresponding first digital signal representative of the angular position of the antenna relative to a first reference heading of the antenna; and storage means having a prestored table of digital values of angular positions of the antenna relative to a second reference heading of the antenna and which in response to the first digital signal produces a second digital signal corresponding to one of the prestored digital values, the second digital signal thereby being representative of the angular position of the antenna relative to the second reference heading.
Claim 3
Dependent Claim
67 words
A conversion system as set forth in claim 1 wherein the converting means includes means responsive to the analog signal for producing sequences of digital values and for generating control signals identifying which one of the sequence of digital values is being produced, each sequence of digital values produced being representative of the angular position of the antenna relative to the first reference heading of the antenna.
Claim 4
Dependent Claim
65 words
A conversion system as set forth in claim 1 wherein the storage means produces sequences of digital values, each sequence of digital values being representative of the angular position of the antenna relative to the second reference heading of the antenna, and which system further comprises control logic for producing control signals identifying which one of the digital values in the sequence is being produced.
Claim 5
Dependent Claim
71 words
A conversion system as set forth in claim 3 wherein te converting means includes means responsive to the analog signal for producing second sequences of digital values and for generating second control signals identifying which one of the digital values in the second sequence is being produced, each second sequence of digital values being representative of the angular position of the antenna relative to the first reference heading of the antenna.
Claim 6
Dependent Claim
35 words
A conversion system as set forth in claim 4 wherein the control logic responds to the second control signals to identify which one of the digital values in the first named sequence is being produced.
Claim 7
Dependent Claim
84 words
A conversion system as set forth in claim 1 wherein the storage means includes another prestored table of digital values of angular positions of the antenna relative to the first reference heading of the antenna and which system further comprises means for selecting either the first named prestored table of digital values or the another prestored table of digital values to selectively generate a second digital signal representative of the angular position of the antenna relative to either the first or second reference headings.
Claim 8
Dependent Claim
53 words
A conversion system as set forth in claim 1 wherein the converting means includes means for producing binary coded digits representative of the angular position relative to the first reference heading and the storage means includes means for producing binary coded digits representative of the angular position relative to the second reference heading.
Claim 9
Dependent Claim
157 words
A digital display system for use with a controller for an antenna rotator which includes means for generating an analog signal varying as a function of the angular position of the antenna, the digital display system comprising: means for converting the analog signal to a corresponding first digital signal representative of the angular position of the antenna relative to a first reference heading of the antenna; storage means having a prestored table of digital values of angular positions of the antenna relative to a second reference heading of the antenna and which in response to the first digital signal produces a second digital signal corresponding to one of the prestored digital values, the second digital signal thereby being representative of the angular position of the antenna relative to the second reference heading; and means responsive to the second digital signal for displaying digits representative of the angular position of the antenna relative to the second reference heading.
Claim 10
Dependent Claim
157 words
A digital display system for use with a controller for an antenna rotator which includes means for generating an analog signal varying as a function of the angular position of the antenna, the digital display system comprising: means for converting the analog signal to a corresponding first digital signal representative of the angular position of the antenna relative to a first reference heading of the antenna; storage means having a prestored table of digital values of angular positions of the antenna relative to a second reference heading of the antenna and which in response to the first digital signal produces a second digital signal corresponding to one of the prestored digital values, the second digital signal thereby being representative of the angular position of the antenna relative to the second reference heading; and means responsive to the second digital signal for displaying digits representative of the angular position of the antenna relative to the second reference heading.
Claim 11
Dependent Claim
68 words
A digital display system as set forth in claim 8 wherein the converting means includes means responsive to the analog signal for producing sequences of digital values and for generating control signals identifying which one of the sequence of digital values is being produced, each sequence of digital values produced being representative of the angular position of the antenna relative to the first reference heading of the antenna.
Claim 12
Dependent Claim
66 words
A digital display system as set forth in claim 8 wherein the storage means produces sequences of digital values, each sequence of digital values being representative of the angular position of the antenna relative to the second reference heading of the antenna, and which system further comprises control logic for producing control signals identifying which one of the digital values in the sequence is being produced.
Claim 13
Dependent Claim
72 words
A digital display system as set forth in claim 10 wherein the converting means includes means responsive to the analog signal for producing second sequences of digital values and for generating second control signals identifying which one of the digital values in the second sequence is being produced, each second sequence of digital values being representative of the angular position of the antenna relative to the first reference heading of the antenna.
Claim 14
Dependent Claim
44 words
A digital display system as set forth in claim 11 wherein the displaying means includes means responsive to the first named control signals for digitally displaying a sequence of digits representative of the angular position of the antenna relative to the second reference heading.
Claim 15
Dependent Claim
36 words
A digital display system as set forth in claim 11 wherein the control logic responds to the second control signals to identify which one of the digital values in the first named sequence is being produced.
Claim 16
Dependent Claim
84 words
A digital display system as set forth in claim 8 wherein the storage means includes another prestored table of digital values of angular positions of the antenna relative to the first reference heading of the antenna and which system further comprises means for selecting either the first named prestored table of digital values or another prestored table of digital values to selectively generate a second digital signal representative of the angular position of the antenna relative to either the first or second reference headings.
Claim 17
Dependent Claim
54 words
A digital display system as set forth in claim 8 wherein the converting means includes means for producing binary coded digits representative of the angular position relative to the first reference heading and the storage means includes means for producing binary coded digits representative of the angular position relative to the second reference heading.
Claim 18
Dependent Claim
152 words
In a controller for a rotator for rotating an antenna to selected angular positions and generating an analog signal which varies as a function of the angular position of the antenna, a conversion system comprising: means for converting the analog signal to a corresponding first digital signal representative of the angular position of the antenna relative to a first reference heading; storage means having a prestored table of digital values of angular positions of the antenna relative to a second reference heading of the antenna and which in response to the first digital signal produces a second digital signal corresponding to one of the prestored digital values, the second digital signal thereby being representative of the angular position of the antenna relative to the second reference heading; and means responsive to the second digital signal for displaying digits representative of the angular position of the antenna relative to the second reference heading.
Claim 19
Dependent Claim
152 words
In a controller for a rotator for rotating an antenna to selected angular positions and generating an analog signal which varies as a function of the angular position of the antenna, a conversion system comprising: means for converting the analog signal to a corresponding first digital signal representative of the angular position of the antenna relative to a first reference heading; storage means having a prestored table of digital values of angular positions of the antenna relative to a second reference heading of the antenna and which in response to the first digital signal produces a second digital signal corresponding to one of the prestored digital values, the second digital signal thereby being representative of the angular position of the antenna relative to the second reference heading; and means responsive to the second digital signal for displaying digits representative of the angular position of the antenna relative to the second reference heading.
Claim 20
Dependent Claim
66 words
In a control as set forth in claim 16, the converting means including means responsive to the analog signal for producing sequences of digital values and for generating control signals identifying which one of the sequence of digital values is being produced, each sequence of digital values produced being representative of the angular position of the antenna relative to the first reference heading of the antenna.
Claim 21
Dependent Claim
64 words
In a controller as set forth in claim 16, the storage means producing sequences of digital values, each sequence of digital values being representative of the angular position of the antenna relative to the second reference heading of the antenna, the conversion system further comprising control logic for producing control signals identifying which one of the digital values in the sequence is being produced.
Claim 22
Dependent Claim
70 words
In a controller as set forth in claim 18, the converting means including means responsive to the analog signal for producing second sequences of digital values and for generating second control signals identifying which one of the digital values in the second sequence is being produced, each second sequence of digital values being representative of the angular position of the antenna relative to the first reference heading of the antenna.
Claim 23
Dependent Claim
42 words
In a controller as set forth in claim 19, the displaying means including means responsive to the first named control signals for digitally displaying a sequence of digits representative of the angular position of the antenna relative to the second reference heading.
Claim 24
Dependent Claim
34 words
In a controller as set forth in claim 19 the control logic responding to the second control signals to identify which one of the digital values in the first named sequence is being produced.
Claim 25
Dependent Claim
82 words
In a controller as set forth in claim 16, the storage means including another prestored table of digital values of angular positions of the antenna relative to the first reference heading of the antenna, the conversion system further comprising means for selecting either the first named prestored table of digital values or another prestored table of digital values to selectively generate a second digital signal representative of the angular position of the antenna relative to either the first or second reference headings.
Claim 26
Dependent Claim
51 words
In a controller as set forth in claim 16, the converting means including means for producing binary coded digits representative of the angular position relative to the first reference heading, the storage means including means for producing binary coded digits representative of the angular position relative to the second reference heading.
References Cited (Backward Citations)
US3795851A
Cited
US4100472A
Cited
US4077000A
Cited
US4156241A
Cited
US4109191A
Cited
US4263539A
Cited
US4330782A
Cited
US4496890A
Cited
US4542326A
Cited
US4584511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |