Abstract: When a first member transmits information on a network, a converted first hash code which includes a member ID of the first member is given. When a second member further transmits and diffuses the information transmitted from the first member, the converted previous first hash code which includes the member ID of the first member is associated with a converted second hash code which includes a member ID of the second member. When the still other member accesses the information transmitted by the second member, the second member is specified from the second hash code and the first member is specified from the first hash code associated with the second hash code.

Abstract: When a first member transmits information on a network, a converted first hash code which includes a member ID of the first member is given, When a second member further transmits and diffuses the information transmitted from the first member, the converted previous first hash code which includes the member ID of the first member is associated with a converted second hash code which includes a member ID of the second member. When the still other member accesses the information transmitted by the second member, the second member is specified from the second hash code and the first member is specified from the first hash code associated with the second hash code.

Abstract: When a first member transmits information on a network, a converted first hash code which includes a member ID of the first member is given. When a second member further transmits and diffuses the information transmitted from the first member, the converted previous first hash code which includes the member ID of the first member is associated with a converted second hash code which includes a member ID of the second member. When the still other member accesses the information transmitted by the second member, the second member is specified from the second hash code and the first member is specified from the first hash code associated with the second hash code.

Abstract: When a first member transmits information on a network, a converted first hash code which includes a member ID of the thirst member is given. When a second member further transmits and diffuses the information transmitted from the first member the converted previous first hash code which includes the member ID of the first member is associated with a converted second hash code which includes a member ID of the second member. When the still other member accesses the information transmitted by the second member, the second member is specified from the second hash code and the first member is specified from the first hash code associated with the second hash code.

Abstract: A user enters a numeric string on a standby screen of a cellular telephone, and then presses a predetermined function key, the numeric string obtained by numerical conversion of a piece of registration information, in accordance with an assignment relationship indicated on numerical keys of the cellular telephone. A database in which numeric data obtained by the numerical conversion of a piece of registration information in accordance with the above-mentioned assignment relationship and the piece of registration information are associated with each other is previously held in the cellular telephone. The database is searched by using the entered numeric string as a search key, so that pieces of registration information associated with numeric data containing the numeric string are extracted. An exactly matching one of the extracted pieces of registration information is sorted in a high rank and displayed.

Abstract: A user enters a numeric string on a standby screen of a cellular telephone (1), and then presses a predetermined function key, the numeric string being obtained by numerical conversion of a keyword related to a piece of registration information, e.g. a destination e-mail address, in accordance with an assignment relationship between characters and numerical keys. In the cellular telephone having recognized the entry of the numeric string and the pressing of the predetermined function key, a database is searched by using as a key the entered numeric string or a character string obtained by character conversion of the entered numeric string in accordance with the above-mentioned assignment relationship, and e-mail destination candidates associated with the numeric string or the character string are extracted and displayed on a display. The user selects a desired destination from among the candidates, whereby an e-mail destination address is selected and called up.

Abstract: A user enters a numeric string on a standby screen of a cellular telephone, and then presses a predetermined function key, the numeric string obtained by numerical conversion of a piece of registration information, in accordance with an assignment relationship indicated on numerical keys of the cellular telephone. A database in which numeric data obtained by the numerical conversion of a piece of registration information in accordance with the above-mentioned assignment relationship and the piece of registration information are associated with each other is previously held in the cellular telephone. The database is searched by using the entered numeric string as a search key, so that pieces of registration information associated with numeric data containing the numeric string are extracted. An exactly matching one of the extracted pieces of registration information is sorted in a high rank and displayed.

Abstract: A user enters a numeric string on a standby screen of a cellular telephone (1), and then presses a predetermined function key, the numeric string being obtained by numerical conversion of a keyword related to a piece of registration information, e.g. a destination e-mail address, in accordance with an assignment relationship between characters and numerical keys. In the cellular telephone having recognized the entry of the numeric string and the pressing of the predetermined function key, a database is searched by using as a key the entered numeric string or a character string obtained by character conversion of the entered numeric string in accordance with the above-mentioned assignment relationship, and e-mail destination candidates associated with the numeric string or the character string are extracted and displayed on a display. The user selects a desired destination from among the candidates, whereby an e-mail destination address is selected and called up.

Abstract: An assignment server which receives access from a browser installed in a user terminal includes a terminal attribute specifying element for specifying an attribute of the user terminal from which access is made (or a country to which the user terminal belongs), and an assignment element for changing a destination to which the browser is to be connected to a conversion server corresponding to the attribute of the user terminal. The conversion server holds therein a conversion table produced in corresponding relation to the attribute of the user terminal and containing an identification number and a Web page address of Web content associated with each other. On receipt of a search request designating the identification number, the conversion server sends a response designating the corresponding Web page address. Thus, desired Web content is displayed in the browser.

Abstract: An assignment server receiving access from a browser installed in a mobile telephone has a browser specifying clement specifying the type of browser and an assignment element changing the connection destination of the browser to a conversion server. The conversion server has a conversion table associating an identification number with a web content page address accessable from the browser. On receipt of a retrieval request designating the identification number, the conversion server sends a response designating the corresponding page address, so that the desired web content is displayed on the browser.