US 12,332,079 B2
High definition (HD) map content representation and distribution for autonomous vehicles
Matthew Ashman, Bellevue, WA (US); Galen Collins, Seattle, WA (US); and Russell Chreptyk, Seattle, WA (US)
Assigned to NVIDIA Corporation, Santa Clara, CA (US)
Filed by NVIDIA Corporation, Santa Clara, CA (US)
Filed on Feb. 11, 2022, as Appl. No. 17/670,294.
Prior Publication US 2023/0258472 A1, Aug. 17, 2023
Int. Cl. G01C 21/00 (2006.01); B60W 60/00 (2020.01); H04L 67/146 (2022.01)
CPC G01C 21/3896 (2020.08) [B60W 60/001 (2020.02); G01C 21/3815 (2020.08); H04L 67/146 (2013.01); B60W 2556/40 (2020.02); B60W 2556/45 (2020.02)] 21 Claims
OG exemplary drawing
 
1. A computer implemented method comprising:
generating a first version of a high definition (HD) map defined using a first graph that connects nodes of encoded map content, an individual node of the nodes corresponding to a respective geographic region of geographic regions of an environment encoded by the first version of the HD map, the first version of the HD map including:
a first reference to a new node, the new node corresponding to a modification to at least one of a same tile or a same layer with respect to a first existing node corresponding to a second graph that defines a second version of the HD map, the first existing node being connected to one or more second existing nodes of the second graph; and
one or more second references that associate the new node with the one or more second existing nodes corresponding to the second graph; and
sending at least a portion of the map content encoded using one or more of the nodes to a machine.