Interfacing between digital assistant applications and navigation applications

A system comprising:

• at least one processor;
• and
• memory storing instructions that, when executed, cause the at least one processor to be operable to:
• receive, while a display of a client device is rendering a viewport of a navigation application accessible by the client device, an input audio signal detected by a sensor of the client device;
• parse the input audio signal to identify at least a referential word;
• transmit, to a data processing system, at least the referential word, wherein transmitting the referential word to the data processing system causes the data processing system to:
• retrieve, based on the referential word, one or more point locations within a reference frame corresponding to a geographic region displayed in the viewport of the navigation application when the input audio signal is received,
• the viewport corresponding to an area of a display of the client device through which the reference frame is visible, and
• the reference frame corresponding to the geographic region displayed in the viewport is different from a previously presented reference frame corresponding to a current location of the client device;
• and
• transmit, to the client device, an indication of the one or more point locations within the reference frame corresponding to the geographic region displayed in the viewport of the navigation application when the input audio signal is received;
• receive, from the data processing system, the indication of the one or more point locations within the reference frame corresponding to the geographic region displayed in the viewport of the navigation application when the input audio signal is received;
• and
• cause the navigation application to display the one or more point locations within the reference frame corresponding to the geographic region displayed in the viewport of the navigation application when the input audio signal is received.

A non-transitory computer-readable storage medium storing instructions that, when executed, cause at least one processor to be operable to perform operations, the operations comprising:

• receiving, while a display of a client device is rendering a viewport of a navigation application accessible by the client device, an input audio signal detected by a sensor of the client device;
• parsing the input audio signal to identify at least a referential word;
• transmitting, to a data processing system, at least the referential word, wherein transmitting the referential word to the data processing system causes the data processing system to:
• retrieve, based on the referential word, one or more point locations within a reference frame corresponding to a geographic region displayed in the viewport of the navigation application when the input audio signal is received,
• the viewport corresponding to an area of a display of the client device through which the reference frame is visible, and
• the reference frame corresponding to the geographic region displayed in the viewport is different from a previously presented reference frame corresponding to a current location of the client device;
• and
• transmit, to the client device, an indication of the one or more point locations within the reference frame corresponding to the geographic region displayed in the viewport of the navigation application when the input audio signal is received;
• receiving, from the data processing system, the indication of the one or more point locations within the reference frame corresponding to the geographic region displayed in the viewport of the navigation application when the input audio signal is received;
• and
• causing the navigation application to display the one or more point locations within the reference frame corresponding to the geographic region displayed in the viewport of the navigation application when the input audio signal is received.