Abstract: A portable terminal device having a first color temperature sensor that is provided on a first side of the portable terminal device, and having a second color temperature sensor that is provided on a second side of the portable terminal device, the portable terminal device includes, at least one camera module configured to capture an image; and an image processor configured to perform image correction to the image that is captured by the camera module based on at least one of first information from the first color temperature sensor and second information from the second color temperature sensor.

Abstract: A portable terminal device having a first color temperature sensor that is provided on a first side of the portable terminal device, and having a second color temperature sensor that is provided on a second side of the portable terminal device, the portable terminal device includes, at least one camera module configured to capture an image; and an image processor configured to perform image correction to the image that is captured by the camera module based on at least one of first information from the first color temperature sensor and second information from the second color temperature sensor.

Abstract: A portable terminal includes: a position obtaining section that obtains a piece of position information of a current position of the portable terminal; a power control section that controls turning on and off of power before and after the piece of position information is obtained by the position obtaining section, respectively; and a motion sensor that detects a movement of the portable terminal. The portable terminal further includes: a storage section that stores a history of the pieces of position information; and a recording section that records, into the storage section, a piece of position information newly obtained by the position obtaining section activated by the power control section, only when a movement is detected by the motion sensor.

Abstract: A portable terminal includes: a position obtaining section that obtains a piece of position information of a current position of the portable terminal; a power control section that controls turning on and off of power before and after the piece of position information is obtained by the position obtaining section, respectively; and a motion sensor that detects a movement of the portable terminal. The portable terminal further includes: a storage section that stores a history of the pieces of position information; and a recording section that records, into the storage section, a piece of position information newly obtained by the position obtaining section activated by the power control section, only when a movement is detected by the motion sensor.

Abstract: In the WDM communication system, in the absence of data to be transmitted on an optical channel, a pilot signal transmitting means transmits the channel-unique pilot signal data on the channel. A WDM communication apparatus on a receiving end detects the pilot signal data in the received WDM signals, and on the basis of the detection result, it evaluates whether each channel is used or not. It is thus easy to recognize which channel is unused (idle) of the WDM signals, so that channel resources can be used effectively according to the traffic.

Abstract: A user identification system includes a portable terminal device for holding user information for receiving a designated service and a user information inspection device for inspecting the user information, wherein provisions are made to prevent any person other than the rightful holder of the portable terminal device from receiving the service by using the portable terminal device. The user information inspection device acquires biometric data from the bearer of the portable terminal device when a designated part of his body is held over the inspection device, and transmits the acquired biometric data via radio directly to the portable terminal device passing in proximity to it. The portable terminal device receives the biometric data, compares it with prestored biometric data, and transmits the prestored user information via radio to the user information inspection device only when a data match is confirmed.

Abstract: In the WDM communication system, in the absence of data to be transmitted on an optical channel, a pilot signal transmitting means transmits the channel-unique pilot signal data on the channel. A WDM communication apparatus on a receiving end detects the pilot signal data in the received WDM signals, and on the basis of the detection result, it evaluates whether each channel is used or not. It is thus easy to recognize which channel is unused (idle) of the WDM signals, so that channel resources can be used effectively according to the traffic.