Abstract: In a video processing method, plural pieces of digital data such as video and audio data are inputted together with an instruction signal indicating whether or not the plural pieces of digital data are to be multiplexed, and the plural pieces of digital data are multiplexed when the instruction signal indicates that the digital data are to be multiplexed. The multiplexed digital data are then outputted together with a flag indicating whether or not the digital data are multiplexed. Therefore, when video and audio data are not multiplexed or when there is a scene description for handling plural pieces of video data, the video and audio data can be recorded or transmitted in a like manner as multiplexed data.

Abstract: The present invention correctly decodes data encoded with a variable-length encoding method that improves the compression ratio. The variable-length encoding method encodes a unit data composed of a plurality of sub-data while referencing a parameter table, and includes: an initialization step in which the parameter table is set to initial values; a parameter table information encoding step in which information related to the initialized parameter table is encoded; a parameter obtaining step in which encoding parameters to be used in the encoding of sub-data are obtained from the parameter table; a sub-data encoding step in which variable-length encoding of the sub-data is performed with reference to the obtained encoding parameters; and an encoded information placement step in which the encoded information is placed in a position in which the information can be obtained before the encoded unit data.

Abstract: A self-refresh timer circuit for generating a timer period for controlling self-refresh operation of a semiconductor memory device comprising: a temperature-dependent voltage source for outputting a voltage having a temperature dependency based on a diode characteristic; a control current generating circuit for applying an output voltage of the temperature-dependent voltage source to a temperature detecting device having a diode characteristic and for generating a control current having a magnitude in proportion to a current flowing through the temperature detecting device; and a timer period generating circuit for generating a timer period in inverse proportion to the magnitude of the control current.

Abstract: The present invention correctly decodes data encoded with a variable-length encoding method that improves the compression ratio. The variable-length encoding method encodes a unit data composed of a plurality of sub-data while referencing a parameter table, and includes: an initialization step in which the parameter table is set to initial values; a parameter table information encoding step in which information related to the initialized parameter table is encoded; a parameter obtaining step in which encoding parameters to be used in the encoding of sub-data are obtained from the parameter table; a sub-data encoding step in which variable-length encoding of the sub-data is performed with reference to the obtained encoding parameters; and an encoded information placement step in which the encoded information is placed in a position in which the information can be obtained before the encoded unit data.

Abstract: The present invention provides a media data display device, a media data display method and a media data display program for displaying, on a display screen, multimedia data made up of a plurality of media including moving images in a variety of display methods. The media data display device (85) is a media data display device for displaying, on a display screen, multimedia data made up of a plurality of media including moving images, and is provided with a scaling determining portion (87), a scaling portion (89) and a display portion (19). The scaling determining portion (87) determines whether to display the moving images after changing their image size or to display the moving images without changing their image size. The scaling portion (89) and the display portion (19) are means for displaying the multimedia data, and display the moving images after switching whether to perform scaling or not based on a determination result from the scaling determining portion (87).

Abstract: A data transmission apparatus has a multiplexing unit that cyclically multiplexes presentation information and navigation information stored in a transmission data storage unit according to control by a multiplexing control unit and a transmission unit that transmits the multiplexed stream. The reception control unit of a data reception apparatus sets filter conditions in a filter condition storage unit of a TS decoder unit in accordance with user operation indications. The presentation information and navigation information separated by the TS decoder unit are outputted via a reproduction unit to a display unit and an audio output unit.

Abstract: A data reception/playback apparatus includes sending means for sending a transmission request to a transmission apparatus, reception means for receiving stream data transmitted from the transmission apparatus in response to the transmission request, selection means for selecting a playback start position from a playback start position table where at least one playback start position is stored, and playback means for playing the stream data. The sending means requests the transmission apparatus to transmit the table, the reception means receives the table, the selection means selects a playback start position from the table, the sending means requests the transmission apparatus to transmit the stream data from the playback start position, the reception means receives the stream data, and the playback means plays the received stream data. Therefore, even when the data reception/playback apparatus receives the stream data from some midpoint in the stream, the apparatus can correctly play the stream data.

Abstract: In a memory system having a memory controller 20 and at least one DRAM 30, the memory controller 20 receives a continuous and alternate inversion signal as a pseudo clock signal from the DRAM 30, and generates an internal reception clock signal for a DQ signal on the basis of the continuous and alternate inversion signal and a base clock signal. Then, the memory controller 20 counts the number of the receiving internal clocks from the moment an OUT1 command is issued to the DRAM 30 until a high-level data signal is received as the DQ data signal from the DRAM 30, and retains the count result as the number of delay clocks. Thus, the memory controller 20 can receive read data (DQ signal) on the basis of the internal reception clock signal when time equivalent to the number of the delay clocks passes after the read command is issued.

Abstract: A data transmission apparatus (100) causes a data reception apparatus to execute an appropriate reproduction process on content data, and comprises: a file analysis unit (110) and an RTSP processing unit (101) which (i) establish and initialize a transmission path of the content data with the data reception apparatus, (ii) extract reproduction control information from an MP4 file, and (iii) transmit the extracted information to the data reception apparatus; an RTP generation unit (102) which acquires the content data from the MP4 file via a file analysis unit (110) so as to packetize the acquired content data; and an RTP delivery unit (103) which transmits the content data that has been packetized by the RTP generation unit (102).

Abstract: Information relating to a playback of divided static media data included in static media transmission data is stored in static media transmission data previous than the static media transmission data, and transmitted, thereby making it possible to determine whether there is no divided static media data originally or lost when the divided static media data is not received. Accordingly, in the case where static media such as timed text and the like is used in distribution of streaming type, when receiving no static media data, a data receiving apparatus determines whether there is no media data to be next displayed or media data is lost in the course of transmission to notify a user of loss of media data correctly. Moreover, Moreover, it is possible to reduce time required for packet loss detection to execute a retransmission request without increasing pre-buffering.

Abstract: In order to solve problems that, when the use area used by data of a certain kind reaches the upper limit value, the cache memory cannot be used even though a space area exists in the use area used by data of other kind and utilization efficiency of the cache memory decreases, and that, when the upper limit value of the use area is discarded, on the other hand, data inside the area held is replaced by other data and disappears, a storage area of a size of a minimum guarantee value corresponding to each computer is set inside a disk cache memory in a control device of a storage device connected to a plurality of computers and a storage area is allocated to each computer in accordance with priority corresponding to each computer.

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 present invention correctly decodes data encoded with a variable-length encoding method that improves the compression ratio. The variable-length encoding method encodes a unit data composed of a plurality of sub-data while referencing a parameter table, and includes: an initialization step in which the parameter table is set to initial values; a parameter table information encoding step in which information related to the initialized parameter table is encoded; a parameter obtaining step in which encoding parameters to be used in the encoding of sub-data are obtained from the parameter table; a sub-data encoding step in which variable-length encoding of the sub-data is performed with reference to the obtained encoding parameters; and an encoded information placement step in which the encoded information is placed in a position in which the information can be obtained before the encoded unit data.

Abstract: A memory system and a control method for the same enable stable operation at high frequencies without a radiant noise problem. In the memory system, a plurality of DRAMs is provided on each of a plurality of modules, and each DRAM is connected with a memory controller by data lines and clock lines. The clock lines have a topology exclusively applied to each module, while the data lines have a topology for connecting them to their associated DRAMs on each module. Command/address lines also have a topology similar to that of the clock lines. In this case, data signals supplied through the data lines and clock and command/address signals supplied through the clock lines and the command/address lines are transferred at different timings between the DRAMs and the memory controller. For this reason, the DRAMs and the memory controller are provided with circuits for matching the timings.

Abstract: When a semiconductor memory device enters a refresh mode, retention times of memory cells are measured for each word line. A plurality of refresh cycles are set in correspondence to the retention times of the memory cells. According to the refresh cycles, the memory cells are refreshed.

Abstract: A multiplex scheme conversion apparatus (103) includes (i) a packet loss judgment unit 202 that judges the packet loss of a TS packet, performs error processing in the case where a packet loss is detected, and outputs the payload data on which error processing has already been performed and (ii) a Box making unit 206 that makes ‘moov’ including error information and ‘mdat’ based on inputted AU data and the display time in a PES header.

Abstract: The present invention correctly decodes data encoded with a variable-length encoding method that improves the compression ratio. The variable-length encoding method encodes a unit data composed of a plurality of sub-data while referencing a parameter table, and includes: an initialization step in which the parameter table is set to initial values; a parameter table information encoding step in which information related to the initialized parameter table is encoded; a parameter obtaining step in which encoding parameters to be used in the encoding of sub-data are obtained from the parameter table; a sub-data encoding step in which variable-length encoding of the sub-data is performed with reference to the obtained encoding parameters; and an encoded information placement step in which the encoded information is placed in a position in which the information can be obtained before the encoded unit data.

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: In a memory device which is used with the memory device connected to a data bus, the memory device includes an active termination circuit for terminating the memory device when the active termination circuit is electrically put into an active state and for unterminating the memory device when the active termination circuit is electrically put into an inactive state. The memory device further includes a control circuit for controlling the active termination circuit to electrically put the active termination circuit into the active state or the inactive state.

Abstract: A data transmission apparatus including a receiving unit for receiving transmitted packets; a priority decision unit; a retransmission packet storage unit; a retransmission instruction receiving unit for receiving a retransmission request from a terminal at the receiving end; a retransmission decision unit; a transmission queue management unit; and a transmission unit.