# US 9,000,350 B1 · Time-domain overlap imagery detecting system and method of using same

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- Number: US 9,000,350 B1
- Document ID: US9000350B1
- Status: Granted
- Kind: B1
- Application number: 13/610,697
- Filed: 2012-09-11
- Granted: 2015-04-07
- Earliest claimed: 2012-09-11
- Assignees: Rockwell Collins, Inc.
- Applicants: Carlo L. Tiana; Nathaniel S. Kowash; Robert B. Wood
- Inventors: Carlo L. Tiana; Nathaniel S. Kowash; Robert B. Wood
- Web page: https://patentgrep.com/patent/US9000350B1

## CPC

- H04N 1/00127: {Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture}
- G01S 5/16: using electromagnetic waves other than radio waves
- G01S 11/12: using electromagnetic waves other than radio waves
- G08G 5/51: for control when on the ground, e.g. taxiing or rolling
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93})

## Abstract

Provided in one embodiment is a method of detecting a pulsing signal, comprising: detecting the pulsing signal using a first sensor device acquiring data at a first time interval; and detecting the pulsing signal using a second sensor device acquiring data at a second time interval; wherein the second time interval overlaps a portion of the first time interval.

## Claims

### Claim 1

A method of detecting a pulsing signal, comprising:
detecting the pulsing signal using a first sensor device acquiring data at a first time interval; and
detecting the pulsing signal using a second sensor device acquiring data at a second time interval;
wherein the second time interval and the first time interval only partially overlap each other,
wherein the pulsing signal is continuously detected by the combination of the first and second sensor devices.

### Claim 2 (depends on 1)

The method of claim 1, wherein the pulsing signal comprises strobed light of a strobed approach light system.

### Claim 3 (depends on 1)

The method of claim 1, wherein at least one of the first sensor device and the second sensor device comprises a camera, a visible band sensor, a short-wave infrared sensitive sensor, or combinations thereof.

### Claim 4 (depends on 1)

The method of claim 1, wherein the first sensor device and the second sensor device are parts of a sensor system.

### Claim 5 (depends on 1)

The method of claim 1, wherein at least one of the first and second time intervals has a length of between about 8 ms and about 15 ms.

### Claim 6 (depends on 1)

The method of claim 1, wherein the first time interval and the second time interval have different lengths.

### Claim 7 (depends on 1)

The method of claim 1, the first time interval second time interval have the same length.

### Claim 8 (depends on 1)

The method of claim 1, further comprising synchronizing with a pulse of the pulsing signal at least one of the (i) detecting using the first sensor device and (ii) detecting using the second sensor device.

### Claim 9 (depends on 1)

The method of claim 1, further comprising detecting the pulsing signal using a third sensor device acquiring data at a third time interval.

### Claim 10 (depends on 1)

The method of claim 1, further comprising determining a relative distance between a source of the pulsing signal and at least one of the first sensor device and the second sensor device based on a result of the detections.

### Claim 11

A method of detecting a pulsing signal, comprising:
detecting the pulsing signal using a plurality of sensor devices acquiring data at respectively different time intervals,
wherein at least some of the time intervals overlap one another such that the overlapping time intervals only partially overlap each other; and
wherein the pulsing signal comprises strobed light, and is continuously detected by the combination of the plurality of sensor devices.

### Claim 12 (depends on 11)

The method of claim 11, wherein at least some of the different time intervals begin at different times.

### Claim 13 (depends on 11)

The method of claim 11, wherein at least one of the time intervals has a length of between about 8 ms and about 15 ms.

### Claim 14 (depends on 11)

The method of claim 11, further comprising analyzing the pulsing signal at least with respect to timing, pattern, or a combination thereof.

### Claim 15 (depends on 11)

The method of claim 11, further comprising processing a result of the detections from the first sensor device and the second sensor device.

### Claim 16

A non-transitory computer readable medium having instructions stored therein, the instructions being executable by at least one processor of a system to execute a method of detecting a pulsing signal, the method comprising:
detecting the pulsing signal using a first sensor device acquiring data at a first time interval;
detecting the pulsing signal using a second sensor device acquiring data at a second time interval; and
processing a result of the detections of the pulsing signal from the first sensor device and the second sensor device;
wherein the second time interval and the first time interval only partially overlap each other,
wherein the pulsing signal is continuously detected by the combination of the first and second sensor devices.

### Claim 17 (depends on 16)

The non-transitory computer readable medium of claim 16, wherein the method further comprises determining a coordinate of at least one of the first sensor device and the second sensor device relative to a source of the pulsing signal based on the result.

### Claim 18 (depends on 16)

The non-transitory computer readable medium of claim 16, wherein the method further comprises high dynamic range processing, noise reduction enhancing, or a combination thereof.

### Claim 19 (depends on 16)

The non-transitory computer readable medium of claim 16, wherein the system is a part of an aircraft.

### Claim 20 (depends on 16)

The non-transitory computer readable medium of claim 16, wherein at least one of the first sensor device and the second sensor device comprises a camera, a visible band sensor, a short-wave infrared sensitive sensor, or combinations thereof.
