Proprietary radio control head with authentication

摘要

A combination of a radio receiver with a detachable controller is presented. The radio receiver sends either reduced or enhanced metadata about received programming to the controller. A connection from the controller to the receiver carries commands and carries only the reduced set of metadata, such as tuned channel and tuned channel name, from the radio receiver back to the controller. The controller is authorized by the radio receiver sending a radio identifier to the controller, determination of an authentication code at the controller and communication of the determined authentication code back to the radio receiver for validation. Upon validation, an enhanced set of metadata, including song title and artist, is sent to the controller. The enhanced metadata, the reduced metadata, or both, may be encrypted. Such authorization processing is periodically performed by the radio receiver.

主权项

1. An automated method on a control device for authenticating a control device to a radio receiver, comprising:
communicating:
(a) commands from the control device to the radio receiver, and(b) a reduced set of metadata from the radio receiver to the control device, the reduced set of metadata:
(i) pertaining to and being contemporary with processing performed by the radio receiver,(ii) received by the radio receiver over a broadcast link, and(iii) comprising a tuned channel indicator for a radio channel being received by the radio receiver; transmitting a unique identifier request to the radio receiver; receiving a device identifier from the radio receiver that uniquely identifies the radio receiver; transmitting a refresh time window request to the radio receiver; receiving a refresh window definition from the radio receiver; determining a first authentication code, the first authentication code being derived from the device identifier in accordance with a defined algorithm; transmitting, after the expiration of the refresh time window, the first authentication code from the control device to the radio receiver; and receiving, in response to transmitting the first authentication code, an enhanced set of metadata, the enhanced set of metadata (i) pertaining to and contemporary with processing performed by the radio receiver, (ii) comprising a song title and artist, and (iii) having been received by the radio receiver over the broadcast radio link.