Remote Control & Receiver Addendum

While implementing and testing the IR remote receiver program on Arduino (will be posted soon) I discovered another remote signal, which is vastly different from standard commands. When a remote key is held down for extended period, the remote repeatedly transmits the following signal (shown repeated twice):

Unlike the regular command signals, the start pulse is only 2.2 ms long (as opposed to 4.45 ms observed for regular commands), followed by (standard) signal low duration (0.6 ms).