Abstract:
The invention is directed to a method for applying a certificate suitable for a portable telephone belonging to a user, wherein the portable telephone comprises a telephone number. The method comprises steps of generating a user key pair in the portable telephone, wherein the key pair comprises a user public key information and then transmitting an applying packet from the portable telephone to a certificate authority through a switching center by using a short message service, wherein the applying packet comprises at least the user public key information. The user is verified according to the telephone number received by the certificate authority from the switching center. A certificate packet is generated by the certificate authority, wherein the certificate packet comprises at least a serial number and a certificate authority signature. The certificate packet is transmitted to the portable telephone according to the telephone number by using the short message service.
Abstract:
The invention discloses an event announcing system. The event announcing system comprises a portable electrical apparatus, a network, and a server. The portable electrical apparatus comprises an image capturing module, a positioning module, a time module, and a processing module. When the image capturing module captures an image information related to an event, the positioning module receives a positioning information and the time module receives a time information. The processing module is used for generating an announcing signal according to the image information, the positioning information, and the time information. When the server receives the announcing signal via the network, the server validates the announcing signal according to a validating rule and selectively generates an event report according to the announcing signal.
Abstract:
The invention is directed to a method for applying a certificate suitable for a portable telephone belonging to a user, wherein the portable telephone comprises a telephone number. The method comprises steps of generating a user key pair in the portable telephone, wherein the key pair comprises a user public key information and then transmitting an applying packet from the portable telephone to a certificate authority through a switching center by using a short message service, wherein the applying packet comprises at least the user public key information. The user is verified according to the telephone number received by the certificate authority from the switching center. A certificate packet is generated by the certificate authority, wherein the certificate packet comprises at least a serial number and a certificate authority signature. The certificate packet is transmitted to the portable telephone according to the telephone number by using the short message service.
Abstract:
A video conference method, applied to a video conference system in a multi-way conference is provided. The video conference method includes: retrieving a first number of a plurality of terminals of the multi-way conference; determining whether at least one other terminal is requiring to join in on the multi-way conference; when the at least one other terminal is requiring to join in on the multi-way conference, increasing the first number of the terminals of the multi-way conference to a second number of the terminals; and determining a resolution of the video signal captured and transmitted by the video conference system according to the second number of the terminals. A video conference system using the video conference method, is also provided.
Abstract:
The invention discloses an event announcing system. The event announcing system comprises a portable electrical apparatus, a network, and a server. The portable electrical apparatus comprises an image capturing module, a positioning module, a time module, and a processing module. When the image capturing module captures an image information related to an event, the positioning module receives a positioning information and the time module receives a time information. The processing module is used for generating an announcing signal according to the image information, the positioning information, and the time information. When the server receives the announcing signal via the network, the server validates the announcing signal according to a validating rule and selectively generates an event report according to the announcing signal.
Abstract:
The invention discloses a communication system for assisting a user for retrieving geography-associated multimedia information, and the communication system comprises a data processing device and several mobile communication devices. The data processing device receives a first request information including a location term and a time term from a terminal device of the user, and broadcasting a second request information, based on the time term, to the mobile communication devices located within a region relative to the location term. The data processing device receives responding messages and captured audio and/or video data from the mobile communication devices accepting the second request information, and transmitting a location-related information to the terminal device based on the responding messages. The user transmits responding information responsive to the location-related information to the data processing device via the terminal device. The data processing device transmits the captured audio and/or video data (representative of the retrieved geography-associated multimedia information) relative to the responding information to the terminal device.