Abstract: A system is provided for preventing recorded data from being illicitly read out and analyzed. An Internet connection interface transmits a program executed by an adapter to an authentication station, while receiving the program in an encrypted form from the authentication station. A hard disc records the encrypted program, received from the authentication station. An interface transmits the program recorded on the horizontal direction on the adapter.

Abstract: A program supplied from a personal computer via an interface 31 is processed according to a program stored in a ROM 36, developed in a RAM 33, and executed by a CPU 32. Data resulted from the program execution is stored into a nonvolatile memory 34. The interface 31, CPU 32, RAM 33, nonvolatile memory 34 and ROM 36 are housed in an adaptor 26 formed integrally as a semiconductor IC.

Abstract: A frequency control apparatus and an information processing apparatus includes an observation section for observing an operation state of a control object which operates with a variably controlled frequency, a frequency determination section for determining a clock frequency in response to the operation state, and a frequency limitation section for limiting a range or a value of the clock frequency determined by the frequency determination section. If the frequency determined in response to the operation state of the control object is within an allowable range, the control is performed with the frequency, but if the frequency is outside the allowable range, the frequency is limited to the range.

Abstract: A system is provided for preventing recorded data from being illicitly read out and analyzed. An Internet connection interface transmits a program executed by an adapter to an authentication station, whilst receiving the program in an encrypted form from the authentication station. A hard disc records the encrypted program, received from the authentication station. An interface transmits the program recorded on the horizontal direction on the adapter.

Abstract: A system for preventing recorded data from being illicitly read out and analyzed. An Internet connection interface 11 transmits a program executed by an adapter 7 to an authentication station, whilst receiving the program in an encrypted form from the authentication station. A hard disc 15 records the encrypted program, received from the authentication station. An interface 17 transmits the program recorded on the horizontal direction 15 on the adapter 7.

Abstract: A frequency control apparatus and an information processing apparatus are disclosed wherein it is possible, in control of an operation frequency of a control object performed in response to a result of observation of an operation state of the control object, to limit the operation frequency or designate an allowable value or the like to achieve improvement in performance and power-saving. The frequency control apparatus (1) includes an observation section (3) for observing an operation state of a control object (2) which operates with a variably controlled frequency, a frequency determination section (4) for determining a clock frequency in response to the operation state, and a frequency limitation section (5) for limiting a range or a value of the clock frequency determined by the frequency determination section (4).

Abstract: A cable apparatus makes a selection between supply of an internal power to a predetermined interface device and that of an external power to the interface device in compliance with the interface standard applied to the predetermined interface device. The cable apparatus includes an internal power terminal connectable to an internal power source, a plurality of external power terminals connectable to an external power source, and a plurality of power lines connected to the internal power terminal and/or external power terminals.