Abstract: A method and system for embedding an electronic watermark directly in an MPEG stream is provided. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether ½ of the embedding pattern can be embedded is determined.

Abstract: A method and system for embedding an electronic watermark directly in an MPEG stream is provided. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether ½ of the embedding pattern can be embedded is determined.

Abstract: To implement job execution in which resource assignment and change of the assignment can be dynamically and autonomously performed so as to meet requirements of a job in a job and resource environment in which the operational status cannot be forecasted in advance. A job that can be divided into a selected number of tasks is provided to one computer of a plurality of computers connected via networks, and job tasks are processed with the one computer for predetermined time. A progress rate of task processing for the predetermined time is calculated, and completion time for task processing on the one computer is estimated on the basis of the progress rate and the predetermined time. It is determined whether the estimated completion time meets requirements of the job. When the estimated completion time meets the requirements, job tasks are processed with the one computer, and results are generated.

Abstract: A method and system for embedding an electronic watermark directly in an MPEG stream is provided. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether ½ of the embedding pattern can be embedded is determined.

Abstract: It is one object of the present invention to provide a method and system for embedding an electronic watermark directly in an MPEG stream. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock.

Abstract: An injection valve has a nozzle body, a valve needle positioned in the nozzle body, an actuator for actuating the valve needle, and an orifice plate fixed at an end of the nozzle body. The orifice plate has a valve seat for cooperate with the valve needle and an orifice for injecting a fluid. The orifice plate is provided with a projection having a convex-curved surface on an orifice outlet side of the orifice plate. A flat surface portion is formed in the area of the convex-curved surface, and the outlet of the orifice is located in the flat surface portion.

Abstract: A method and system which improves reliability and availability of services for streaming distributions in general. To accomplish this objective, a distribution method takes the following procedure. A partition server and a plurality of distribution servers are provided in order to distribute stream data to one or more receivers connected together via a network. The partition server receives the stream data and the plurality of distribution servers receive respective elements of the stream data partitioned by the partition server to distribute the elements to the receivers. First, the partition server selects one of the distribution servers that can perform transmissions in order to transmit elements of the stream data received from a streaming source, to the selected distribution server. The distribution server distributes the elements of the stream data received from the partition server, to the receivers.

Abstract: The digital contents distribution system of the present invention distributes digital contents through first and second networks 12 and 22. A server 14 is connected to the first network 12, and clients 20 for receiving and displaying or reproducing the digital contents are connected to the second network 22. The server 14 divides digital contents held therein into a plurality of packets, and transmits packets of a minimum unit for constructing the digital contents to the second network 22. The clients 20 include means for holding the digital contents therein by use of the packets of the minimum unit received from the server 14 and packets received from other clients constructing the second network.

Abstract: To provide an electronic watermark method and system for which the detection reliability of embedded information does not depend on the strength of signals that are measured in frames. To achieve the above object, information is prepared for embedding as a bit stream, the sign of the bit stream being changed in accordance with a sign inversion cycle, and the bit stream being embedded in a frame. As for detection of information, values obtained through observation of frames are accumulated, and the accumulated values are compared with threshold values that are varied in accordance with the accumulated values obtained by observation. The comparison results are then employed to detect the embedded information.

Abstract: To enable the inclination of the injection direction and the distribution of the penetration force of spray to be adjusted over a wide range, and an axially symmetrical spray shape to be obtained even when the injection hole is inclined, or the shape of the spray to be changed without inclining the injection hole, a fuel passageway 203 is provided as a swirling force adjustment means between the valve seat 201 and injection hole 101 of the fuel injector. This swirling force adjustment means adjusts the distribution of the swirling force of the fuel flowing into injection hole 101, and thus adjusts the spray shape obtained as a result.

Abstract: Has the same digital content shared by all clients connected to local networks just by sending the smallest packet required to reconstitute the digital content from a server. A digital content delivery system of the present invention includes clients for constituting second networks and connected to a first network and receiving and providing the digital content. A server includes a client list for storing address identification values of the clients participating in the second network constituted as a collision domain and a device for randomly selecting client identification values registered with the client list, and sends to a selected client a packet as a minimum unit for constituting the digital content in response to the selection.

Abstract: The present invention provides a carbon fiber composite material comprising an elastomer and a carbon nanofiber dispersed in the elastomer, wherein the elastomer has an unsaturated bond or a group, having affinity to the carbon nanofiber. Also disclosed is a process for producing the carbon fiber composite material.

Abstract: To provide an electronic watermark method and system for which the detection reliability of embedded information does not depend on the strength of signals that are measured in frames. To achieve the above object, information is prepared for embedding as a bit stream, the sign of the bit stream being changed in accordance with a sign inversion cycle, and the bit stream being embedded in a frame. As for detection of information, values obtained through observation of frames are accumulated, and the accumulated values are compared with threshold values that are varied in accordance with the accumulated values obtained by observation. The comparison results are then employed to detect the embedded information.

Abstract: A method and a system for embedding information in document data that include text written in a page description language. First, an analysis is made of the layout of the document data in which information is to be embedded. Then, based on the analysis of the layout, a sequence of locations is generated whereat the information is to be embedded. A page description of the text at a determined location is changed in accordance with the embedded information. As a result, the information is embedded in document data that include text written in a page description language. The sequence of locations is generated by producing a string of sequential pseudo-random numbers.

Abstract: In an electronic fuel injector used in a combustion system using gas fuel, the present invention suppresses wearing of worn portions to make control of stable supply of gas fuel possible by forming a surface reforming layer (nitrided layer etc.) having wear resistance on a surface of a structural material of worn portions of the electronic fuel injector.

Abstract: A geometrical correction system and method comprising creation of at least one pattern consisting of asymmetric two dimensional waves, embedding at least one pattern consisting of asymmetric two dimensional waves in a real domain, and calculation of at least one geometrical transformation applied by way of extraction of the embedded two dimensional waves. Said creation of at least one pattern consisting of asymmetric two dimensional waves means to calculate a two dimensional wave parameter set for creating at least one pattern adapted for use in the geometrical correction system of this invention. Also, said embedding of at least one pattern consisting of asymmetric two dimensional waves in a real domain means to add the pattern to an original image.

Abstract: To supply a method that enables the inclination of the injection direction and the distribution of the penetration force of spray to be adjusted over a wide range, and an axially symmetrical spray shape to be obtained even when the injection hole is inclined, or the shape of the spray to be changed without inclining the injection hole. To provide a fuel passageway 203 as a swirling force adjustment means between the valve seat 201 and injection hole 101 of the fuel injector. This swirling force adjustment means adjusts the distribution of the swirling force of the fuel flowing into injection hole 101, and thus adjusts the spray shape obtained as a result.

Abstract: A method and a system is provided for embedding and detecting additional information, such as copyright information, in audio data, so that a modification in the sonic quality due to the embedding is imperceptible to human beings, and does not drastically deteriorate the sonic quality.

Abstract: The present invention provides a data hiding method of hiding media data in message data and a data extraction method of extracting the hidden data wherein message data is dispersively hidden in media data such as an image or sound to prevent a third person from modifying the message data easily.

Abstract: An electronic watermarking system that impartially performs the deletion of a visible mark and the embedding of an invisible mark. Since the deletion of the visible mark and the embedding of the invisible mark are not performed sequentially but in parallel, even when a memory snapshot is taken during the process, it is difficult to acquire original image data where neither a visible mark nor an invisible mark is embedded. Furthermore, in a process for deleting a visible mark and embedding an invisible mark, an invisible mark is embedded in an area where a visible mark was embedded. Therefore, even when images are compared before and after the visible mark is deleted, it is difficult to infer from the results that an invisible mark has been newly embedded.