Abstract: The moving picture coding apparatus includes: a flag information generation unit for generating a flag indicating that values indicated by display order information POC are in non-sequential order; and a variable length coding unit for performing variable length coding and other operations on the inputted coded signal and further generating a coded stream (Str) by including information such as the flag generated by the flag information generation unit.

Abstract: A picture coding method according to the present invention includes: a coding step (S102, S103) of coding, picture parameter sets (PPS) to be used for decoding all the pictures (pic) included in a random access unit (RAU) made up of plural pictures and a sequence parameter set (SPS); and a parameter set placement step (S104) of placing, in the random access unit (RAU), the parameter set (PPS, SPS) coded in the coding step (S102, S103).

Abstract: A picture coding method according to the present invention includes: a coding step (S102, S103) of coding, picture parameter sets (PPS) to be used for decoding all the pictures (pic) included in a random access unit (RAU) made up of plural pictures and a sequence parameter set (SPS); and a parameter set placement step (S104) of placing, in the random access unit (RAU), the parameter set (PPS, SPS) coded in the coding step (S102, S103).

Abstract: A picture coding method according to the present invention includes: a coding step (S102, S103) of coding, picture parameter sets (PPS) to be used for decoding all the pictures (pic) included in a random access unit (RAU) made up of plural pictures and a sequence parameter set (SPS); and a parameter set placement step (S104) of placing, in the random access unit (RAU), the parameter set (PPS, SPS) coded in the coding step (S102, S103).

Abstract: A picture coding method according to the present invention includes: a coding step (S102, S103) of coding, picture parameter sets (PPS) to be used for decoding all the pictures (pic) included in a random access unit (RAU) made up of plural pictures and a sequence parameter set (SPS); and a parameter set placement step (S104) of placing, in the random access unit (RAU), the parameter set (PPS, SPS) coded in the coding step (S102, S103).

Abstract: A picture coding method according to the present invention includes: a coding step (S102, S103) of coding, picture parameter sets (PPS) to be used for decoding all the pictures (pic) included in a random access unit (RAU) made up of plural pictures and a sequence parameter set (SPS); and a parameter set placement step (S104) of placing, in the random access unit (RAU), the parameter set (PPS, SPS) coded in the coding step (S102, S103).

Abstract: The multiplexer includes a first input unit, a second input unit, a first analysis unit, and a second analysis unit. Moreover, the multiplexer includes a packetization part determination unit that determines the packetization part of audio data in a way that the packetization part is made to be the same or approximately the same as a playback start time of a video sample that is placed in a leading part of the packetization part of video data after determining the packetization part of the video data based on video sample header information. Furthermore, the multiplexer includes a packet header part generation unit that generates a packet header part on the basis of the determined packetization part, a packet data generation unit that generates a packet data unit on the basis of the determined packetization part and a packet connection unit that generates a packet.

Abstract: A demultiplexing apparatus includes a data obtainment unit to obtain the MP4 file data, and a decoding unit to demultiplex the MP4 file data obtained by the data obtainment unit into pairs of a moov and a mdat and pairs of a moof and a mdat, and decode those pairs pair-by-pair. A content duration specification unit specifies the content total duration based on the content total duration information contained in the moov of the MP4 file data obtained by the data obtainment unit and a playback unit displays the content total duration specified by the content duration specification unit.

Abstract: A data conversion apparatus is provided with a temporary storage means for temporarily holding inputted variable-frame-rate coded data, a coded data time stamp reading means for reading a coded data time stamp of the inputted coded data, a time stamp conversion means for converting the coded data time stamp into an MP4 time stamp, and a fixed FPS means for converting the variable-frame-rate coded data into fixed-frame-rate coded data.

Abstract: A picture coding method for generating a coded picture signal Str on which rapid random access can be performed while preventing a decrease in compression rate. The method includes: a first reference restriction step (Step S106) of restricting, in a target access unit to be processed (RAU), so that a post-entry picture refers to another picture except for the following pictures: a picture located before an entry picture in coding order, and a pre-entry picture; and a second reference restriction step (Step S114 or Step S116) of restricting, in the immediately following access unit (RAU), so that a pre-entry picture refers to another picture except for the following pictures: a picture located before an entry picture in the target access unit (RAU) in coding order, and a pre-entry picture in the target access unit (RAU).

Abstract: A picture coding method according to the present invention includes: a coding step (S102, S103) of coding, picture parameter sets (PPS) to be used for decoding all the pictures (pic) included in a random access unit (RAU) made up of plural pictures and a sequence parameter set (SPS); and a parameter set placement step (S104) of placing, in the random access unit (RAU), the parameter set (PPS, SPS) coded in the coding step (S102, S103).

Abstract: The multiplexer (100) includes a first input unit (101) that obtains video data, a second input unit (104) that obtains audio data, a first analysis unit (103) that analyzes video data and obtains video sample header information, a second analysis unit (106) that analyzes audio data and obtains audio sample header information, a packetization part determination unit (107) that determines the packetization part of the audio data in a way that the packetization part is made to be the same or approximately the same as the playback start time of the video sample that is placed in the leading part of the packetization part of the video data after determining the packetization part of the video data based on the video sample header information, a packet header part generation unit (112) that generates the packet header part on the basis of the determined packetization part, a packet data generation unit (113) that generates the packet data unit on the basis of the determined packetization part and a packet connecti

Abstract: The demultiplexing apparatus 200 comprises a data obtainment unit 210 operable to obtain the MP4 file data 100, a decoding unit 213 operable to demultiplex the MP4 file data 100 obtained by the data obtainment unit 210 into pairs of a moov 110 and a mdat 110 and pairs of a moof 130 and a mdat 140, and decode those pairs pair by pair, a content duration specification unit 211a operable to specify the content total duration based on the content total duration information contained in the moov 110 of the MP4 file data 100 obtained by the data obtainment unit 210 and a playback unit 214 operable to display content total duration specified by the content duration specification unit 211a.

Abstract: Provided is a content classifying section 203 for classifying and bundling to-be-transmitted contents on the basis of any piece of information of media kind, IP address, port number and session identifier. A packet header compressing section 204 carries out header compression on the transmission packet. Due to this, because contents can be packet-transferred with efficiency and excellent error resistance by the use of a communication and broadcast network, it is possible to realize, even on the Internet for broadcast in a broadcast form, a quality broadcast free of image or sound discontinuity as the terrestrial-wave TV broadcast.

Abstract: The moving picture coding apparatus includes: a flag information generation unit (112) for generating a flag indicating that values indicated by display order information POC are in non-sequential order; and a variable length coding unit (113) for performing variable length coding and other operations on the inputted coded signal and further generating a coded stream (Str) by including information such as the flag generated by the flag information generation unit (112).

Abstract: The moving picture data reproducing device 200 is comprised of file inputting unit 201 for acquiring an MP4 file, data file temporary storage unit 202 that has an area for temporarily storing the accepted input MP4 file, data file analyzing unit 203 for analyzing the file header information by reading the input MP4 file, data decoding unit 204 for reading entity data from data file temporary storage unit 202 based on the analysis result of data file analyzing unit 203 and decoding the entity data, data reproducing unit 205 for reproducing the decoded entity data and outputting the entity data to a displaying device, RA information table generating unit 206 for transforming random access information generated based on the analysis result of data file analyzing unit 203 into a table, file outputting unit 207 for outputting a new MP4 file by integrating the RA information table and the input-completed MP4 file, and file storing unit 208 for storing the outputted MP4 file.

Abstract: When a server as a transmission source of content data is changed in a state where the content data from the server are played back in a receiving terminal, the receiving terminal receives the content data starting from the head of its not-yet-played portion to be played. A receiving terminal 100a for receiving content data transmitted from a server to be played is provided with a time information storage processing unit 105a for generating not-yet-played range information Ir indicating a range of a not-yet-played portion in the content data on the basis of time information concerning the playback process, which information is added to the content data in predetermined data units. When receiving a message for requesting to change the server S as the data transmission source, the receiving terminal 100a transmits a message requesting the content data to a new transmission source server with adding the not-yet-played range information to the data.

Abstract: A data conversion apparatus is provided with a temporary storage means for temporarily holding inputted variable-frame-rate coded data, a coded data time stamp reading means for reading a coded data time stamp of the inputted coded data, a time stamp conversion means for converting the coded data time stamp into an MP4 time stamp, and a fixed FPS means for converting the variable-frame-rate coded data into fixed-frame-rate coded data.

Abstract: A data distribution system is provided with a data edition unit for editing contents information supplied from a transmission terminal on the basis of edition information to create multimedia data. Among the contents information constituting the created multimedia data, those having relatively small quantity of data are transmitted as first data to a reception terminal, and those having relatively large quantity of data are transmitted as second data to the reception terminal according to data acquisition information supplied from the reception terminal. Therefore, among the multimedia data created at the transmission terminal, character data or the like can be immediately transmitted to the transmission terminal while video data or the like, which takes much time for transmission, can be transmitted according to the convenience of the user at the receiving end.