Infrared communications on a mobile device

摘要

A system and a method are disclosed for compensating for discontinuous clock signals, default-high data buses, when generating and receiving an infrared signal on a mobile device with minimal hardware. The system can compensate for clock signals that are discontinuous using an effective bitrate in place of a nominal bitrate when processing signals. The effective bitrate can be determined by determining the length of a break in the clock signal that is discontinuous and adjusting the nominal bitrate based on the length and recurrence frequency of the break in the clock signal. Additionally, processed signals transferred on default-high data buses can be inverted to ensure the correct IR signal is output or received.

主权项

1. A method of processing signals on a computing device comprising:
generating a clock signal on a data bus connecting a processor to an infrared system, the clock signal connected to the processor but disconnected from the infrared system, the clock signal being discontinuous and comprising a plurality of repeating units, each repeating unit having a number of equally spaced clock transitions followed by a break, the data bus having a nominal operating frequency based on the number of equally spaced clock transitions in the clock signal, the nominal operating frequency resulting in a nominal bitrate of the data bus; determining a duration of the break in the clock signal; determining an effective bitrate of the data bus based on the nominal operating frequency and the duration of the break in the clock signal; and processing signals using the effective bitrate.