Abstract: An illumination controller determines a target brightness setting value from a illuminance value measured by a illumination sensor, determines a brightness correction start time in response to a target brightness setting value and a current brightness setting value and a calculation information that are stored in a memory, calculates an amount of brightness setting change per specified time from the current brightness setting value stored in the memory and the target brightness setting value at a brightness correction start time, and outputs an output brightness setting value in response to the amount of brightness setting change that is calculated. The brightness controller adjusts brightness of the display unit in response to the output brightness setting value output from the illumination controller.

Abstract: An illumination controller determines a target brightness setting value from a illuminance value measured by a illumination sensor, determines a brightness correction start time in response to a target brightness setting value and a current brightness setting value and a calculation information that are stored in a memory, calculates an amount of brightness setting change per specified time from the current brightness setting value stored in the memory and the target brightness setting value at a brightness correction start time, and outputs an output brightness setting value in response to the amount of brightness setting change that is calculated. The brightness controller adjusts brightness of the display unit in response to the output brightness setting value output from the illumination controller.

Abstract: A device which are able to be applied to a kind of processing such as one in which an authorized non-member (who has no membership for purchasing tickets) is also allowed to pass through a ticket examination gate just in a way as performed by a member. As advance processing prior to such a kind of processing, data exchange has been performed between an apparatus [101] (e.g. non-member's mobile phone) which requests for processing (processing for passing through the gate) and an apparatus [102] (e.g. member's mobile phone) which provides a support for the processing in advance (1). At the gate, at the occasion when the apparatus [101] conducts communications with an apparatus [103] (ticket examination machine), the apparatus [101] also makes connections with the apparatus [102] (2) to be authenticated by the apparatus [102], and have the apparatus [102] provide a support in presentation of a ticket (3). In such an occasion, the apparatus [102] makes a confirmation either automatically or manually.