Voice-coded in-band data for interactive calls

摘要

A voice-coded in-band communication device monitors a voice-coded channel to detect data to present to a user. During operation, the communication device can detect a data-encoding signal from the voice-coded channel, such that the voice-coded channel can carry an audio signal that includes a voice signal and the data-encoding signal. The device decodes the data-encoding signal to detect a data element. The data element can include information that is to be presented to a local user, a request from a remote device for information about the local user, or information that the system can use to establish a peer-to-peer connection with the remote device over a separate data channel. The device can also generate a filtered audio signal to present to the user by removing the detected data-encoding signal from the voice-coded channel, and then reproduces the filtered audio signal for the user.

主权项

1. A computer-implemented method, comprising:
monitoring, by a local computing device, an audio-receiving channel; detecting a data-encoding signal from the audio-receiving channel, wherein the audio-receiving channel carries an audio signal that includes a voice signal and the data-encoding signal from a remote device; decoding the data-encoding signal to obtain a data element; determining that a received data element includes a request for a user-preference parameter; determining, from a profile of a local user, a user-preference value that satisfies the request; responsive to determining that the user-preference parameter is sensitive user information, presenting an interactive user-interface to the local user, wherein the interactive user-interface requests a permission from the local user to reveal the requested information to the remote device; and responsive to detecting a response from the local user that grants the permission, communicating the user-preference value to the remote device.