US3723953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for producing bearing traces in direction finding apparatus
Assignee: KUPP F GmbH
•
Filing: 1970-12-14
•
Granted: 1973-03-27
•
Expires: 1990-12-14
Abstract
Abstract An improved apparatus for producing one or a plurality of bearing traces associated with arbitrarily selectable directions in a panoramic display on the screen of a cathode-ray tube indicator for a direction finding system operating according to the reflected beam method (radar or sonar devices) with synchronous rotation of the direction of the radar or sonar beams (bearing direction) and the direction of deflection of the cathode-ray beam through the aid of bearing direction signals, including a reference direction, e.g., forward, signal and angle of rotation signal in the form of an alternating voltage signal, contained in a bearing information channel transmitting these signals from the transmitter-receiver of the system to the deflection system of the cathode-ray tube. The desired bearing traces are produced by feeding the bearing direction signals to a digital or analog integrating means which converts the angle of rotation signal into a measured bearing angle value which corresponds to the momentary angle of rotation, relative to the reference direction. The measured bearing angle value signal is fed to at least one bearing trace signal generator which compares the measured bearing angle value with a preset desired bearing angle value supplied by an associated comparison value generator, and emits a bearing trace signal whenever there is coincidence between the measured bearing angle value and the preset bearing angle value. The bearing trace signals are in turn fed to the brightness control circuitry of the cathode-ray tube to cause the desired bearing traces to be produced on the screen. A plurality of bearing traces can be produced either by providing a plurality of parallelly connected bearing trace generators, each of which compares the measured bearing angle value with a different preset bearing angle value, or by connecting a storage device to the output of a single bearing trace signal generator which circulates stored data in synchronism with the momentary bearing angle and has its output also connected to the brightness control circuitry of the cathode-ray tube.
Inventors
- 👤 K Scheer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:24
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
318 words
In a direction finding system operating according to the reflected beam method having a cathode-ray tube indicating device which provides a panoramic display, wherein the direction of the rotating transmitted and received beams is synchronized with the direction of deflection of the cathode-ray beam by means of bearing direction signals, including a reference direction signal and an angle of rotation signal in the form of an alternating voltage signal whose frequency is proportional to the momentary speed of rotation of the transmitted and received beams, contained in a bearing information transmission channel connecteD between the transmitter-receiver of the system and the deflection system of the cathode-ray tube, and wherein means are provided for producing bearing traces on the screen of the cathode-ray tube which are associated with arbitrarily selectable directions, the improvement wherein said means for producing bearing traces comprises: means responsive to the signals in said bearing information channel for integrating the angle of rotation signal to provide a measured bearing angle signal whose value corresponds to the momentary angle of rotation relative to said reference direction, said integrating means including: pulse generating means responsive to the angle of rotation signal for producing a train of pulses proportional to the frequency thereof; and a counter connected to the output of said pulse generating means, said counter being responsive to the reference direction signal to be reset to its starting condition upon each appearance thereof; at least one bearing trace signal generating means for continuously comparing the value of the bearing angle signal with a preset bearing angle value corresponding to the desired direction of a bearing trace on the screen of the cathode-ray tube, and for emitting a bearing trace signal whenever there is coincidence between the value of the bearing angle signal and the preset bearing angle value; and means for applying the emitted bearing trace signal to the brightness control circuit of the cathode-ray tube.
Claim 2
Dependent Claim
318 words
In a direction finding system operating according to the reflected beam method having a cathode-ray tube indicating device which provides a panoramic display, wherein the direction of the rotating transmitted and received beams is synchronized with the direction of deflection of the cathode-ray beam by means of bearing direction signals, including a reference direction signal and an angle of rotation signal in the form of an alternating voltage signal whose frequency is proportional to the momentary speed of rotation of the transmitted and received beams, contained in a bearing information transmission channel connecteD between the transmitter-receiver of the system and the deflection system of the cathode-ray tube, and wherein means are provided for producing bearing traces on the screen of the cathode-ray tube which are associated with arbitrarily selectable directions, the improvement wherein said means for producing bearing traces comprises: means responsive to the signals in said bearing information channel for integrating the angle of rotation signal to provide a measured bearing angle signal whose value corresponds to the momentary angle of rotation relative to said reference direction, said integrating means including: pulse generating means responsive to the angle of rotation signal for producing a train of pulses proportional to the frequency thereof; and a counter connected to the output of said pulse generating means, said counter being responsive to the reference direction signal to be reset to its starting condition upon each appearance thereof; at least one bearing trace signal generating means for continuously comparing the value of the bearing angle signal with a preset bearing angle value corresponding to the desired direction of a bearing trace on the screen of the cathode-ray tube, and for emitting a bearing trace signal whenever there is coincidence between the value of the bearing angle signal and the preset bearing angle value; and means for applying the emitted bearing trace signal to the brightness control circuit of the cathode-ray tube.
Claim 3
Dependent Claim
67 words
The apparatus as defined in claim 1 including a plurality of said bearing trace signal generating means connected in parallel, each of said signal trace generating means comparing the value of the bearing angle signal to a different preset bearing angle value, whereby a plurality of different bearing traces corresponding to the different preset bearing angle values can be produced on the screen of the cathode-ray tube.
Claim 4
Dependent Claim
30 words
The apparatus as defined in claim 1 wherein said integrating means includes a digital to analog converter for continuously providing an output signal proportional to the count in said counter.
Claim 5
Dependent Claim
350 words
In a direction finding system operating according to the reflected beam method having a cathode-ray tube indicating device which provides a panoramic display, wherein the direction of the rotating transmitted and received beams is synchronized with the direction of deflection of the cathode-ray beam by means of bearing direction signals, including a reference direction signal and an angle of rotation signal in the form of an alternating voltage signal whose frequency is proportional to the momentary speed of rotation of the transmitted and received beams, contained in a bearing information transmission channel connected between the transmitter-receiver of the system and the deflection system of the cathode-ray tube, and wherein means are provided for producing bearing traces on the screen of the cathode-ray tube which are associated with arbitrarily selectable directions, the improvement wherein said means for producing bearing traces comprises: means responsive to the signals in said bearing information channel for integrating the angle of rotation signal to provide a measured bearing angle signal whose value corresponds to the momentary angle of rotation relative to said reference direction; at least one bearing trace signal generating means for continuously comparing the value of the bearing angle signal with a preset bearing angle value corresponding to the desired direction of a bearing trace on the screen of the cathode-ray tube, and for emitting a bearing trace signal whenever there is coincidence between the value of the bearing angle signal and the preset bearing angle value; a storage means controlled by said bearing direction signals for circulating data stored therein between its input and output in synchronism with said momentary angle of rotation, said storage means having its input connected to the output of said bearing trace signal generating means and its output connected to the brightness control circuit of said cathode-ray tube; and, control means connected to the input of said storage means for selectively causing the output signals from said bearing trace signal generator to be stored in said storage means whereby different bearing traces corresponding to the stored bearing trace signals are produced on the screen of the cathode-ray tube.
Claim 6
Dependent Claim
350 words
In a direction finding system operating according to the reflected beam method having a cathode-ray tube indicating device which provides a panoramic display, wherein the direction of the rotating transmitted and received beams is synchronized with the direction of deflection of the cathode-ray beam by means of bearing direction signals, including a reference direction signal and an angle of rotation signal in the form of an alternating voltage signal whose frequency is proportional to the momentary speed of rotation of the transmitted and received beams, contained in a bearing information transmission channel connected between the transmitter-receiver of the system and the deflection system of the cathode-ray tube, and wherein means are provided for producing bearing traces on the screen of the cathode-ray tube which are associated with arbitrarily selectable directions, the improvement wherein said means for producing bearing traces comprises: means responsive to the signals in said bearing information channel for integrating the angle of rotation signal to provide a measured bearing angle signal whose value corresponds to the momentary angle of rotation relative to said reference direction; at least one bearing trace signal generating means for continuously comparing the value of the bearing angle signal with a preset bearing angle value corresponding to the desired direction of a bearing trace on the screen of the cathode-ray tube, and for emitting a bearing trace signal whenever there is coincidence between the value of the bearing angle signal and the preset bearing angle value; a storage means controlled by said bearing direction signals for circulating data stored therein between its input and output in synchronism with said momentary angle of rotation, said storage means having its input connected to the output of said bearing trace signal generating means and its output connected to the brightness control circuit of said cathode-ray tube; and, control means connected to the input of said storage means for selectively causing the output signals from said bearing trace signal generator to be stored in said storage means whereby different bearing traces corresponding to the stored bearing trace signals are produced on the screen of the cathode-ray tube.
Claim 7
Dependent Claim
21 words
The apparatus as defined in claim 4 wherein said storage means includes a shift register which serves as its store unit.
Claim 8
Dependent Claim
34 words
The apparatus as defined in claim 4, wherein said storage means is provided with means for selectively erasing the stored signal corresponding to a particular bearing trace on the screen of the cathode-ray tube.
Claim 9
Dependent Claim
25 words
The apparatus as defined in claim 4, wherein said storage means is provided with means for erasing the entire stored contents of said storage means.
Claim 10
Dependent Claim
95 words
The apparatus as defined in claim 5 wherein said storage means comprises a pulse generating means for providing shifting pulses for said shift register in synchronism with said bearing direction signals, and a gating means connected between the input of said storage means and the signal input of said shift register for normally blocking the output signals from said bearing trace generating means and passing the output signals from said shift register; and wherein said control means includes means for causing said gating means to pass the output signals from said bearing trace generating 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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |