Matsushita Electric Industrial Co., Ltd.

Masayuki Yanagida

Koutarou Hirai

Ai Takasu

A portable terminal device of a calling party individually sets a sounding pattern to be used for reporting an incoming call, and a called party is informed of the thus-set sounding pattern beforehand. As a result, when the terminal device of the called party makes the thus-set sounding pattern, the terminal device enables the user to immediately specify the calling party. In addition to sound, blinks of light, vibration of a vibrator, or the color of backlight can be used solely or in combination two of more. Further, so long as the portable terminal device is provided with display means capable of displaying characters, in addition to the incoming call reporting means, a simple message can be indicated on the portable terminal device. Consequently, the called party can immediately ascertain the nature of the call without directly talking with the calling party through the portable terminal device.

Portable terminal device

A portable terminal device including display means for indicating characters and figures, light-emitting means and for emitting exposing light to be used as backlight of the display means, drive means and for activating the light-emitting means, and control means for controlling the drive means, wherein the light-emitting means emits exposed light rays having at least two wavelengths; the control means controls the drive means according to the content of the information to be transmitted to the user in such a way that the wavelength of the exposing light originating from the light-emitting means are changed, thereby enabling the color of backlight of the display means to be changed according to the content of the information to be transmitted. Since a user can ascertain information by means of backlight color, operations required to read characters and figures indicated on the display means can be simplified. This function produces a great effect particularly in darkness.

Growing community of inventors

Atlanta, GA, United States of America

Masayuki Yanagida