Abstract: A table creating unit receives program information and an upper limit bit rate of EPG data, creates a table of EIT [current/net] on the basis of the information and upper limit bit rate, and determines the frequency of transmission of the table in consideration of the upper limit bit rate and the lower limit of the frequency of transmission of the table. A stream transmitting unit receives the table and the frequency of transmission, converts the table to stream information, and transmits a stream at a frequency determined based on the transmission frequency. Therefore, data transmission is carried out satisfying both the limit of the upper limit bit rate and the limit on the transmission frequency.

Abstract: A table creating unit receives program information and an upper limit bit rate of EPG data, creates a table of EIT [current/net] on the basis of the information and upper limit bit rate, and determines the frequency of transmission of the table in consideration of the upper limit bit rate and the lower limit of the frequency of transmission of the table. A stream transmitting unit receives the table and the frequency of transmission, converts the table to stream information, and transmits a stream at a frequency determined based on the transmission frequency. Therefore, data transmission is carried out satisfying both the limit of the upper limit bit rate and the limit on the transmission frequency.

Abstract: A table creating unit receives program information and an upper limit bit rate of EPG data, creates a table of EIT [current/next] on the basis of the information and upper limit bit rate, and determines the frequency of transmission of the table in consideration of the upper limit bit rate and the lower limit of the frequency of transmission of the table. A stream transmitting unit receives the table and the frequency of transmission, converts the table to stream information, and transmits a stream at a frequency determined based on the transmission frequency. Therefore, data transmission is carried out satisfying both the limit of the upper limit bit rate and the limit on the transmission frequency.

Abstract: A system includes a content server device for performing content distribution in a network; a reception terminal device capable of reproducing a content having a specific format; a plurality of transcoder devices provided in the network, for applying format conversion to a content distributed in the network; and a transcoder management device for searching, in response to a search request sent from the reception terminal device, information on the plurality of transcoder devices, and sending to the reception terminal device, as a search result, a transmission path which runs from the content server device to the reception terminal device via at least one of the plurality of transcoder devices, through which format conversion to a desired content can be performed.

Abstract: A data transmitting device and a data receiving device which are capable of conducting an error correction using an FEC stream without requiring a feedback from the data receiving device to the data transmitting device are obtained. The data receiving device includes a media packet transmitting unit for transmitting media streams, a plurality of FEC packet calculating units for calculating FEC packets having different parameters, and a plurality of FEC packet transmitting units for transmitting the FEC packets as a FEC stream. Further, the data receiving device includes a media packet receiving unit for acquiring the media packets, an FEC stream selecting and receiving unit for selecting one or a plurality of FEC streams from the plurality of FEC streams to acquire the FEC packets, and a media packet restoring unit for restoring a lost packet by using the FEC packet.

Abstract: A table creating unit receives program information and an upper limit bit rate of EPG data, creates a table of EIT [current/net] on the basis of the information and upper limit bit rate, and determines the frequency of transmission of the table in consideration of the upper limit bit rate and the lower limit of the frequency of transmission of the table. A stream transmitting unit receives the table and the frequency of transmission, converts the table to stream information, and transmits a stream at a frequency determined based on the transmission frequency. Therefore, data transmission is carried out satisfying both the limit of the upper limit bit rate and the limit on the transmission frequency.

Abstract: Provided is a stream distribution system, including: a content server device for performing content distribution in a network; a reception terminal device capable of reproducing a content having a specific format; a plurality of transcoder devices provided in the network, for applying format conversion to a content distributed in the network; and a transcoder management device for searching, in response to a search request sent from the reception terminal device, information on the plurality of transcoder devices, and sending to the reception terminal device, as a search result, a transmission path which runs from the content server device to the reception terminal device via at least one of the plurality of transcoder devices, through which format conversion to a desired content can be performed.

Abstract: A data transmitting device (100) and a data receiving device (200) which are capable of conducting an error correction using an FEC stream without requiring a feedback from the data receiving device to the data transmitting device are obtained. The data receiving device (100) includes media packet transmitting means (102) for transmitting media streams, a plurality of FEC packet calculating means (103) for calculating FEC packets having different parameters, and a plurality of FEC packet transmitting means (104) for transmitting the FEC packets as a FEC stream. Further, the data receiving device (200) includes media packet receiving means (201) for acquiring the media packets, FEC stream selecting and receiving means (202) for selecting one or a plurality of FEC streams from the plurality of FEC streams to acquire the FEC packets, and media packet restoring means (203) for restoring a lost packet by using the FEC packet.

Abstract: A program content managing/providing system, a program content analyzing/retrieving system, and a user terminal are connected to each other via a network. When broadcasting a program content that is not stored, the program content managing/providing system stores the program content. In response to a distribution request of a desired program content from the user terminal, the program content managing/providing system distributes, to the user terminal, a stored program content corresponding to program information included in the distribution request. The program content analyzing/retrieving system receives and analyzes a broadcast program content and then extracts and saves the program information for each of the program contents. In response to a retrieval request of the program information of a desired program content from the user terminal, the program content analyzing/retrieving system provides, to the user terminal, stored program information of a program content that meets the retrieval request.

Abstract: An electronic program guide providing device can include editor units (31 and 32) each for updating electronic program information which has already been stored in an electronic program information storage unit (11). When each of the editor units updates the electronic program information stored in the electronic program information storage unit, it notifies a table generation unit (21) of update information on the updating at the same time. The table generation unit determines which table is to be regenerated based on the update information, and regenerates only one or more tables that need to be regenerated.