摘要:
A service e-mail providing system includes n (n is an integer more than m, and m is an integer more than 1) terminals which are connected a communication network. An e-mail server is connected with the communication network, and has an e-mail database in which a service e-mail and an advertisement e-mail are stored, and the advertisement e-mail contains advertisement data. The e-mail server transmits the advertisement e-mail to a first one of m terminal of the n terminals, such that the advertisement e-mail are transferred between the m terminals, users of the m terminals satisfying the transfer constraint condition. When a transmission condition is satisfied during the transfer of the advertisement e-mail, the e-mail server transmits the service e-mail to the m terminals.
摘要:
There is provided a method of issuing a mail address to a user who makes e-mail communication with a mail-receiver through a server, including (a) on receipt of a request from the user to issue an interim mail address, issuing an interim mail address to the user from the server, (b) determining a threshold based on which the interim mail address is judged whether valid or invalid, (c) judging whether the interim mail address is valid or invalid, based on the threshold, and (d) if the interim mail address is judged valid, allowing the user to make e-mail communication with the mail-receiver through the use of the interim mail address in place of a mail address of the user.
摘要:
A data transmission/reception system for offering content download service through a wireless communication network, in which users can obtain desired content on demand from the beginning of content data, and the shortage of line capacity can be alleviated, thus enabling a reduction of communication charges. A mobile terminal is provided with two types of downloading means, an immediate download processing means and a reservation download processing means. The reservation download processing means makes a download reservation by storing the meta-data of desired content. When transmitting content to one mobile terminal that has made a request for an immediate download of the content, a radio base station allocates a prescribed channel for the mobile terminal and sends notification including information on the allocated channel to other mobile terminals in the radio communication zone of the radio base station. Having received the notification, each mobile terminal tunes in to the channel, and selectively download reserved content.