Patent ID: 8355705

Claim:
A mobile information apparatus comprising: a storage unit operable to store a condition for triggering switching to a manner mode; a request unit operable to request an instruction from a user as to whether or not to perform the switching to the manner mode when the condition stored in the storage unit is satisfied; a receiving unit operable to receive an instruction given by a user in response to the request by the request unit; a velocity detecting unit operable to detect a traveling velocity of the mobile information apparatus; and a duration measuring unit operable to measure a duration of time, wherein the condition is that the mobile information apparatus travels for a predetermined duration at a velocity equal to or higher than a predetermined velocity, the request unit is operable to make the request when the traveling velocity detected by the velocity detecting unit remains equal to or higher than the predetermined velocity until the duration of time measured by the duration measuring unit reaches the predetermined duration, the measurement by the duration measuring unit starting when the velocity detecting unit detects a traveling velocity higher than the predetermined velocity.