Abstract: The present invention relates to a telecommunications apparatus and a method, a storage medium, and a program for determining whether or not an other side communicating apparatus is near in a network. In a transmitting apparatus, a transmitting unit transmits a sending-message, and a control unit receives a response message to the sending-message, which includes acknowledgement information based on shared data and transmission information in the sending-message. The transmitting apparatus also includes a first judging unit that judges whether a response time of the acknowledgement message is less than a predetermined time. A receiving apparatus includes a generating unit that generates the acknowledgment information and transmits the response message to the transmitting apparatus.

Abstract: The present invention relates to an information processing apparatus allowing proper communication with a communication partner in accordance with a communication time of the communication partner.

Abstract: The construction of a receiving apparatus for receiving a broadcast from a plurality of broadcasting providers is simplified. In a receiving apparatus for receiving a broadcast from a plurality of broadcasting providers, of the function blocks which constitute the receiving apparatus, a block used in common irrespective of the broadcasting provider is formed as a common block, and a block different from one broadcasting provider to another is formed as an independent block. These blocks are connected to each other through an IEEE1394 interface, and the common block is shared among the plurality of blocks which are not used in common, so that a receiving process is performed.

Abstract: The construction of a receiving apparatus for receiving a broadcast from a plurality of broadcasting providers is simplified. In a receiving apparatus for receiving a broadcast from a plurality of broadcasting providers, of the function blocks which constitute the receiving apparatus, a block used in common irrespective of the broadcasting provider is formed as a common block, and a block different from one broadcasting provider to another is formed as an independent block. These blocks are connected to each other through an IEEE1394 interface, and the common block is shared among the plurality of blocks which are not used in common, so that a receiving process is performed.

Abstract: A measurement to obtain an RTT to a receiving apparatus is performed by a relay apparatus that is disposed between a WAN and a home network and connects these two networks. That an RTT value is equal to or less than the threshold value is set as a content distribution condition from a transmitting apparatus, so that the same use environment as a system using current DLNA and DTCP-IP can be realized for content use in the home network. Thereby, unjust distribution of content is prevented while an authentication and key exchange procedure performed via an external network is allowed.

Abstract: An electronic device that generates first authentication data; outputs a first response request generated based on the first authentication data; receives a first response message based on the first response request command, the first response message including second authentication data based on the first authentication data; outputs a second response request command after receiving the first response message; counts a time elapsed from transmitting the second response request; receives a second response message based on the second response request command, the second response message including third authentication data generated at the second electronic device based on the first authentication data; compares the third authentication data included in the second response message with expected authentication data generated by the electronic device based on the first authentication data; and judges if the second electronic device is authorized to use content data based on the comparison result and the counted t

Abstract: The construction of a receiving apparatus for receiving a broadcast from a plurality of broadcasting providers is simplified. In a receiving apparatus for receiving a broadcast from a plurality of broadcasting providers, of the function blocks which constitute the receiving apparatus, a block used in common irrespective of the broadcasting provider is formed as a common block, and a block different from one broadcasting provider to another is formed as an independent block. These blocks are connected to each other through an IEEE1394 interface, and the common block is shared among the plurality of blocks which are not used in common, so that a receiving process is performed.

Abstract: An electronic device that shares a secret key between the electronic device and another electronic device; receives a first response request transmitted from the another electronic device; generates a first response message based on the first response request; receives a second response request transmitted from the another electronic device after the another electronic device receives the first response message; and generates a second response message based on the second response request, the second response message transmitted to the another electronic device. The electronic device is authorized to receive data from the another electronic when authentication is performed between the electronic device and the another electronic device, and a predetermined time elapsed from a transmission of the second response request does not expire before the second response message is received by the another electronic device.

Abstract: The present invention relates to a telecommunications apparatus and a method, a storage medium, and a program for determining whether or not an other side communicating apparatus is near in a network. In a transmitting apparatus, a transmitting unit transmits a sending-message, and a control unit receives a response message to the sending-message, which includes acknowledgement information based on shared data and transmission information in the sending-message. The transmitting apparatus also includes a first judging unit that judges whether a response time of the acknowledgement message is less than a predetermined time. A receiving apparatus includes a generating unit that generates the acknowledgment information and transmits the response message to the transmitting apparatus.

Abstract: To limit use of content, when a source receives a request for transmitting content from a sink, the source performs an authentication process. When the authentication is successful, the source transmits to the sink key information necessary for decrypting the encryption applied to the content. The sink can receive the content by receiving the key information and by decrypting the encryption applied to the content by using the key information.

Abstract: To limit use of content, when a source receives a request for transmitting content from a sink, the source performs an authentication process. When the authentication is successful, the source transmits to the sink key information necessary for decrypting the encryption applied to the content. The sink can receive the content by receiving the key information and by decrypting the encryption applied to the content by using the key information.

Abstract: A communication apparatus includes: a communication section transmitting and receiving a packet encapsulating a command or a response; a transmitter confirmation section confirming whether a transmitter transmitting a command is located within a scope limited by a time-to-live value without referencing a header of a received packet; and a control section controlling a process requested by the received command or subsequent communication with the transmitter transmitting the command based on a confirmation result by the transmitter confirmation section.

Abstract: The present invention relates to an information processing apparatus allowing proper communication with a communication partner in accordance with a communication time of the communication partner.

Abstract: A data transmitting apparatus including a transmitting unit connected to a first network and configured to transmit a check packet to a data receiving apparatus; a control unit configured to receive an acknowledgment message to the check packet from the data receiving apparatus, the acknowledgment message including acknowledgment information based on shared data shared with said data receiving apparatus; a computing unit configured to compute an expected acknowledgment information based on the shared data shared with said data receiving apparatus; a comparing unit configured to produce a comparison result for said data receiving apparatus based on the acknowledgment information and the expected acknowledgment information; a timer configured to determine whether a response time of the acknowledgment message is less than a predetermined time; and a judgment unit configured to judge whether to stop transmission of content data based on the comparison result and the determination of the timer.

Abstract: The present invention relates to a telecommunications apparatus and a method, a storage medium, and a program for determining whether or not an other side communicating apparatus is near in a network. In a transmitting apparatus, a transmitting unit transmits a sending-message, and a control unit receives a response message to the sending-message, which includes acknowledgement information based on shared data and transmission information in the sending-message. The transmitting apparatus also includes a first judging unit that judges whether a response time of the acknowledgement message is less than a predetermined time. A receiving apparatus includes a generating unit that generates the acknowledgment information and transmits the response message to the transmitting apparatus.

Abstract: The present invention relates to an information processing apparatus allowing proper communication with a communication partner in accordance with a communication time of the communication partner.

Abstract: The present invention relates to a telecommunications apparatus and a method, a storage medium, and a program for determining whether or not an other side communicating apparatus is near in a network. In a transmitting apparatus, a transmitting unit transmits a sending-message, and a control unit receives a response message to the sending-message, which includes acknowledgement information based on shared data and transmission information in the sending-message. The transmitting apparatus also includes a first judging unit that judges whether a response time of the acknowledgement message is less than a predetermined time. A receiving apparatus includes a generating unit that generates the acknowledgment information and transmits the response message to the transmitting apparatus.

Abstract: The present invention relates to a telecommunications apparatus and a method, a storage medium, and a program for determining whether or not an other side communicating apparatus is near in a network. In a transmitting apparatus, a transmitting unit transmits a sending-message, and a control unit receives a response message to the sending-message, which includes acknowledgement information based on shared data and transmission information in the sending-message. The transmitting apparatus also includes a first judging unit that judges whether a response time of the acknowledgement message is less than a predetermined time. A receiving apparatus includes a generating unit that generates the acknowledgment information and transmits the response message to the transmitting apparatus.

Abstract: The present invention relates to an information processing apparatus allowing proper communication with a communication partner in accordance with a communication time of the communication partner.

Abstract: In order to limit use of content, when a source receives a request for transmitting content from a sink, the source performs an authentication process. When the authentication is successful, the source transmits to the sink key information necessary for decrypting the encryption applied to the content. The sink can receive the content by receiving the key information and by decrypting the encryption applied to the content by using the key information.