Abstract: A biological sensing system includes a biological information detector that is placed in a first specified portion of a living thing, and detects biological information of the living thing; a position displacement detector that detects an amount of a displacement of a position of the biological information detector from the first portion when the biological information is detected; and a processor that executes a process including estimating optimum biological information from the biological information detected by the biological information detector in accordance with the amount of the displacement.

Abstract: A wireless telephone set that performs digital communication employs light-emitting diodes for illumination, and for alerting the user to incoming calls. To avoid disruption of carrier signal frequencies, the light-emitting diodes are switched on and off only during idle periods, such as idle time slots in time-division multiple-access communication. If the wireless telephone also has a vibrator for alerting the user to incoming calls, switching of the vibrator is similarly synchronized with the idle time periods, and the light-emitting diodes are preferably disabled while the vibrator is in use.