# US 2014/0197980 A1 · Traffic information services-broadcast (tis-b) automatic address detection and coverage indication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197980 A1 - Document ID: US20140197980A1 - Status: Published application - Kind: A1 - Application number: 13/739,636 - Filed: 2013-01-11 - Published: 2014-07-17 - Earliest claimed: 2013-01-11 - Assignees: Garmin International, Inc. - Applicants: Garmin International, Inc. - Inventors: Christopher E.P. Schulte; Timothy G. Hartley - Web page: https://patentgrep.com/patent/US20140197980A1 ## CPC - G01S 13/91: for traffic control (G01S13/93 takes precedence) - G01S 13/765: {with exchange of information between interrogator and responder} - G01S 13/781: {Secondary Surveillance Radar [SSR] in general} - G01S 13/825: {with exchange of information between interrogator and responder} - G01S 13/93: for anti-collision purposes - G01S 13/933: of aircraft or spacecraft - G08G 5/21: located onboard the aircraft - G08G 5/26: Transmission of traffic-related information between aircraft and ground stations - G08G 5/723: {from the aircraft} - G08G 5/20: Arrangements for acquiring, generating, sharing or displaying traffic information (arrangements for monitoring traffic G08G5/72) - G08G 5/25: Transmission of traffic-related information between aircraft - 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 Techniques are described that allow a system, such as a portable ADS-B-enabled device, to automatically determine whether the aircraft in which the system is employed is included in air traffic information (e.g., TIS-B air traffic information) broadcast by an air traffic control (ATC) ground station. The system includes a receiver assembly to receive a first transmission from a transponder of the aircraft that includes an identification address (e.g., an ICAO address) that identifies the aircraft. The receiver assembly also receives a second transmission from the ATC ground station that includes air traffic information and a client list including identification addresses of aircraft included in the air traffic information. The identification address of the aircraft is retrieved from the first transmission and used to determine whether the aircraft is included in the air traffic information by comparing the identification address with the identification addresses in the client list. ## Claims ### Claim 1 A system configured for operation in an aircraft, the system comprising: a receiver assembly operable to receive a first transmission from a transponder associated with the aircraft, the first transmission including an identification address configured to identify the aircraft, and to receive a second transmission from an air traffic control ground station, the second transmission including air traffic information and a client list including identification addresses of aircraft included in the air traffic information; and a processing system operable to: retrieve the identification address associated with the first transmission; and determine whether the aircraft is included in the air traffic information by comparing the identification address of the aircraft with the identification addresses in the client list. ### Claim 2 (depends on 1) The system as recited in claim 1, further comprising a global navigation satellite system receiver operable to determine a position of the aircraft, wherein the processing system is operable to distinguish the first transmission from transmissions received from transponders of other aircraft based on the determined position of the aircraft. ### Claim 3 (depends on 1) The system as recited in claim 1, wherein the processing system is operable to distinguish the first transmission from transmissions from transponders of other aircraft by comparing a power level of the first transmission with power levels of transmission received from transponders of other aircraft. ### Claim 4 (depends on 1) The system as recited in claim 1, wherein the receiver assembly comprises a 1090 MHz receiver configured to receive a Mode S reply transmission. ### Claim 5 (depends on 4) The system as recited in claim 4, wherein the receiver assembly further comprises a 978 MHz receiver. ### Claim 6 (depends on 4) The system as recited in claim 4, wherein the processing system is further configured to determine whether the first transmission includes an indication that the aircraft is capable of receiving ADS-B information. ### Claim 7 (depends on 1) The system as recited in claim 1, wherein the transponder of the aircraft is further configured to transmit pressure altitude information for the aircraft, and wherein the receiver assembly is configured to receive the transmitted pressure altitude information for decoding by the processing system. ### Claim 8 (depends on 1) The system as recited in claim 1, wherein the first transmission comprises a Mode S transmission and the identification address comprises an ICAO address, and wherein the traffic information comprises TIS-B traffic information. ### Claim 9 A method comprising: receiving a Mode S transmission from a transponder of an aircraft, the Mode S transmission including an ICAO address configured to identify the aircraft; retrieving the ICAO address from the Mode S transmission; receiving a TIS-B transmission from the air traffic control ground station, the TIS-B transmission including TIS-B air traffic information and a TIS-B service status list including ICAO addresses of aircraft included in the TIS-B air traffic information; determining whether the aircraft is included in the TIS-B air traffic information by comparing the ICAO address of the aircraft with the ICAO addresses of the TIS-B service status list; and causing an indication of whether the aircraft is included in the air traffic information to be displayed by a portable electronic device. ### Claim 10 (depends on 9) The method as recited in claim 9, wherein the receiving of the Mode S transmission from the transponder associated with the aircraft comprises determining a position of the aircraft using a global navigation satellite system receiver and distinguishing the Mode S transmission from the transponder associated with the aircraft from Mode S transmissions received from transponders of other aircraft based on the determined position of the aircraft. ### Claim 11 (depends on 10) The method as recited in claim 10, wherein the receiving of the Mode S transmission from the transponder associated with the aircraft comprises distinguishing the Mode S transmission from the transponder associated with the aircraft from Mode S transmissions received from transponders of other aircraft by comparing a power level of the Mode S transmission of the transponder associated with the aircraft with power levels of the Mode S transmissions received from transponders of the other aircraft. ### Claim 12 (depends on 11) The method as recited in claim 11, further comprising determining whether the Mode S transmission from the transponder includes an indication that the aircraft is capable of receiving ADS-B information. ### Claim 13 (depends on 11) The method as recited in claim 11, further comprising receiving pressure altitude information for the aircraft transmitted by the transponder of the aircraft. ### Claim 14 A portable ADS-B-enabled device configured for operation in an aircraft, the portable ADS-B-enabled device comprising: a receiver assembly operable to receive a Mode S transmission from a transponder of the aircraft, the Mode S transmission including an ICAO address configured to identify the aircraft, and to receive a TIS-B transmission from the air traffic control ground station, the TIS-B transmission including TIS-B air traffic information and a TIS-B service status list including ICAO addresses of aircraft included in the TIS-B air traffic information; and a processing system operable to: retrieve the ICAO address of the aircraft from the Mode S transmission; and determine whether the aircraft is included in the TIS-B air traffic information by comparing the ICAO address of the aircraft with the ICAO addresses in the TIS-B service status list. ### Claim 15 (depends on 14) The portable ADS-B-enabled device as recited in claim 14, further comprising a global navigation satellite system receiver operable to determine a position of the aircraft, wherein the processing system is operable to distinguish the Mode S transmission from the transponder associated with the aircraft from Mode S transmissions received from transponders of other aircraft based on the determined position of the aircraft. ### Claim 16 (depends on 14) The portable ADS-B-enabled device as recited in claim 14, wherein the processing system is operable to distinguish the Mode S transmission from the transponder associated with the aircraft from Mode S transmissions from transponders of other aircraft by comparing a power level of the Mode S transmission of the transponder associated with the aircraft with power levels of the Mode S transponders of the other aircraft. ### Claim 17 (depends on 14) The portable ADS-B-enabled device as recited in claim 14, wherein the receiver assembly comprises a 1090 MHz receiver configured to receive a Mode S reply transmission. ### Claim 18 (depends on 17) The portable ADS-B-enabled device as recited in claim 17, wherein the receiver assembly further comprises a 978 MHz receiver. ### Claim 19 (depends on 14) The portable ADS-B-enabled device as recited in claim 14, further comprising a communication module configured for communication with a portable electronic device, the processing system further configured to cause an indication of whether the aircraft is included in the air traffic information to be displayed by a display of the portable electronic device. ### Claim 20 (depends on 19) The portable ADS-B-enabled device as recited in claim 19, wherein the portable electronic device is integrated with at least one of the communication module, the receiver assembly, and the processing system.