A database stores updated information concerning protected communications services. The one-chip microcomputer is used in a notebook-size personal computer, and comprises: a CPU that performs operation processing; a CPG that generates a clock signal; a flash memory that stores a control program; a RAM that sores data; an 8-bit timer that controls fans; and a 14-bit timer that controls an LCD brightness controller of an LCD and a voltage charger of batteries. According to further aspects, tests include the transfer of real files between clients and servers, not just test patterns. The channel estimator then tracks the channel estimate over the data sequence by updating the channel estimate and the predictor over the data sequence, without substantially affecting the stability of the channel estimate or the future accuracy of the channel estimate. Drugs for use in such therapies in include RO 31-8220, bafetinib, and cardiac glycosides.