US 12,267,150 B2
Broadcast positioning system supporting location services through over-the-air television (TV) signals
Tariq Islam Mondal, Germantown, MD (US); Robert Samuel Matheny, Jr., Beaufort, NC (US); and Robert Douglas Weller, Washington, DC (US)
Assigned to National Association of Broadcasters, Washington, DC (US)
Filed by National Association of Broadcasters, Washington, DC (US)
Filed on Feb. 1, 2022, as Appl. No. 17/590,101.
Claims priority of provisional application 63/242,618, filed on Sep. 10, 2021.
Claims priority of provisional application 63/180,345, filed on Apr. 27, 2021.
Prior Publication US 2022/0345235 A1, Oct. 27, 2022
Int. Cl. H04H 60/51 (2008.01); H04H 40/18 (2008.01)
CPC H04H 60/51 (2013.01) [H04H 40/18 (2013.01)] 38 Claims
OG exemplary drawing
 
1. A television (TV) signal transmitter, comprising:
a frame circuit configured to receive communications data and generate a plurality of communication frames each comprising:
a preamble configured to indicate a transmission time of a respective one of the plurality of communication frames; and
a payload subframe comprising the communications data; and
a transmitter circuit configured to:
determine a group delay between a time at which the preamble is generated and a time at which the respective one of the plurality of communication frames is transmitted;
update the transmission time in the preamble in each of the plurality of communication frames to include the determined group delay; and
generate a broadcast TV signal comprising the plurality of communication frames.