4. A mobile communication system in which a mobile terminal device and a fixed station device communicate via a wireless transmission path with each other, characterized in that: the mobile terminal device comprises: imaging means for shooting an image; position measuring means for measuring a shooting position of an image to obtain shooting position information indicating the shooting position; direction detecting means for detecting a shooting direction of an image to obtain shooting direction information indicating the shooting direction; information transmitting means on mobile terminal side for transmitting the shooting position information and the shooting direction information via a communication network to the fixed station device; and character recognizing means for recognizing a character or a character string included in the image shot by the imaging means; and the fixed station device comprises: position corresponding information storage means on fixed station side for storing therein position corresponding information that is words associated with respective positional information indicating positions of respective places; position corresponding information extracting means on fixed station side for determining, based on the shooting position information and the shooting direction information that are received from the information transmitting means on mobile terminal side, a range of a shooting object of the imaging means, and extracting from the position corresponding information storage means on fixed station side position corresponding information associated with positions included in the range; non-corresponding-to-position information storage means for storing therein non-corresponding-to-position information that is words not associated with positional information; non-corresponding-to-position information extracting means for extracting non-corresponding-to-position information from the non-corresponding-to-position information storage means according to the position corresponding information extracted by the position corresponding information extracting means on fixed station side; and information transmitting means on fixed station side for transmitting the non-corresponding-to-position information extracted by the non-corresponding-to-position information extracting means via a communication network to the mobile terminal device, wherein the character recognizing means recognizes a character or a character string included in the image using the non-corresponding-to-position information received from the information transmitting means on fixed station side.
4. A mobile communication system in which a mobile terminal device and a fixed station device communicate via a wireless transmission path with each other, characterized in that: the mobile terminal device comprises: imaging means for shooting an image; position measuring means for measuring a shooting position of an image to obtain shooting position information indicating the shooting position; direction detecting means for detecting a shooting direction of an image to obtain shooting direction information indicating the shooting direction; information transmitting means on mobile terminal side for transmitting the shooting position information and the shooting direction information via a communication network to the fixed station device; and character recognizing means for recognizing a character or a character string included in the image shot by the imaging means; and the fixed station device comprises: position corresponding information storage means on fixed station side for storing therein position corresponding information that is words associated with respective positional information indicating positions of respective places; position corresponding information extracting means on fixed station side for determining, based on the shooting position information and the shooting direction information that are received from the information transmitting means on mobile terminal side, a range of a shooting object of the imaging means, and extracting from the position corresponding information storage means on fixed station side position corresponding information associated with positions included in the range; non-corresponding-to-position information storage means for storing therein non-corresponding-to-position information that is words not associated with positional information; non-corresponding-to-position information extracting means for extracting non-corresponding-to-position information from the non-corresponding-to-position information storage means according to the position corresponding information extracted by the position corresponding information extracting means on fixed station side; and information transmitting means on fixed station side for transmitting the non-corresponding-to-position information extracted by the non-corresponding-to-position information extracting means via a communication network to the mobile terminal device, wherein the character recognizing means recognizes a character or a character string included in the image using the non-corresponding-to-position information received from the information transmitting means on fixed station side. 5. The mobile communication system in accordance with claim 4 , wherein: the mobile terminal device comprises: position corresponding information storage means on mobile terminal side for storing position corresponding information that is words associated with respective positional information indicating positions of respective places; and position corresponding information extracting means on mobile terminal side for determining, based on the shooting position information and the shooting direction information, a range of a shooting object of the imaging means, and extracting from the position corresponding information storage means on mobile terminal side position corresponding information associated with positions included in the range, wherein the character recognizing means recognizes a character or a character string included in the image using the non-corresponding-to-position information received from the information transmitting means on fixed station side and the position corresponding information extracted by the position corresponding information extracting means on mobile terminal side.