Abstract: A biological signal measurement device includes: a circular or hyperbolic fitting section (101) to be worn on a part of a human body; a sensing section (103) which is provided to the fitting section (101), and senses a biological signal by being closely attached to a specific part of the human body; a measurement environment judging section for judging an environment for measuring the biological signal by using the sensing section (103); a measurement environment notifying section (104) for notifying a user of a judgment result, according to the result of judgment performed by the measurement environment judging section; and a measurement environment adjusting section (102) for adjusting the measurement environment of the sensing section (103). Thus, it is possible to provide a human-wearable biological signal measurement device that allows easier maintenance of suitable measurement conditions.

Abstract: A remote control system has a remote controller and one or more controlled apparatuses, and a single operation of the remote controller by a user allows a series of functions to be continuously performed in the one or more controlled apparatuses. Upon operation of the remote controller by a user, the remote controller makes an inquiry about a current state of a controlled apparatus. In response to the inquiry from the remote controller, the apparatus sends a signal indicative of its current state. The remote controller then compares the current state of the apparatus with a desired state. The remote controller transmits a function control signal to the apparatus to instruct the apparatus to perform a required function only when the current state of the apparatus does not coincide with the desired state. The same function control signal is repeatedly transmitted until the current state of the apparatus coincides with the desired state.

Abstract: A user carries with him/her a portable device having the form of an entrance ticket, etc., to a performance site so that the portable device stores an identifier of the performance, or uses an information processing device to receive via a broadcasting system or network record data of the performance held at the performance site transmitted from a broadcast station or server as required with the corresponding identifier attached. When an identifier extracted from the received data coincides with an identifier from the portable device, the information processing device stores record data corresponding to the identifier together with the identifier. To reproduce the record data, it is checked whether the same identifier as that from the portable device is stored in the information processing device.