Auto-select algorithm for a high-definition multimedia interface switch

摘要

A multimedia device is described. The multimedia device includes a multiplexer. The multimedia device also includes a plurality of high-definition interface inputs coupled with the multiplexer and an output coupled with the multiplexer. Moreover, the multimedia device includes a processor coupled with the multiplexer to configure the multiplexer to provide one of the plurality of high-definition multimedia interface inputs to the output based on the detection of a clock signal on one of the plurality of high-definition multimedia interface inputs. Furthermore, methods related to embodiments of a multimedia device are described herein.

主权项

1. A multimedia device comprising:
a three-state virtual multiplexer configured to switch high-definition multimedia interface (“HDMI”) signals received at a plurality of HDMI inputs of said three-state virtual multiplexer; a plurality of HDMI receivers, each HDMI receiver having a dedicated HDMI output coupled with one of the plurality of HDMI inputs of said three-state virtual multiplexer, said three-state virtual multiplexer operative to enable only one of the HDMI outputs of one of the plurality of HDMI receivers at a time; an HDMI output coupled with said three-state virtual multiplexer; and a processor coupled with said three-state virtual multiplexer, said processor configured to monitor said plurality of HDMI inputs to detect a clock signal, and further configured to cause said three-state virtual multiplexer to automatically switch said HDMI output from a first of said plurality of HDMI inputs to a second of said plurality of HDMI inputs if said clock signal is detected on said first of said plurality of HDMI inputs.