Abstract: A recording apparatus for facilitating data erasure operations involving data recorded on a recording medium. Each piece of data recorded on the recording medium may be examined to determine whether it is rerecordable by determining whether the data is already stored in another storage medium. When data erasure is requested, erasure processing may be controlled in accordance with the result of the determination. For example, original data based on data captured by a microphone or a camera (namely, non-rerecordable data) may not be erased (without specific approval by the user). Conversely, rerecordable data copied from another recording medium such as a CD may be erased.

Abstract: When a human body touches any of linear electrode array mutually isolated and arranged in X and Y directions of an input device, an inducing signal from wiring of a commercial power supply is transmitted by way of the human body, so that an inducing voltage is generated at the linear electrode to which the human body touches. The input device detects the inducing voltage and outputs the detected inducing voltage to a signal processing section. The signal processing section detects a coordinate where the input device detects the inducing voltage, identifies a frequency of the inducing signal transmitted by way of the human body, and outputs the information to an output terminal.

Abstract: A game controller for an entertainment system coupled to a game machine body. The game controller comprises a key operation portion, communication interface means for establishing a communication with the game machine body, and storage means in which a plurality of game software programs is stored. A particular game software program is selected from the plurality of game software programs using the key operation portion. A control portion of the game machine body executes the particular game software program.