摘要:
In a data transfer system, a transmission terminal is provided with a transmission unit and a divisional transmission unit. A server station is provided with mailboxes, a transmission/reception management unit, a divisional reception unit and a divisional transmission unit. A reception terminal is provided with a reception,/reconstruction unit and a divisional reception unit. In the transmission of video mail from the transmission unit (or from the transmission/reception management unit) to the transmission/reception management unit (or to the reception/reconstruction unit), audio and a frame (still picture) representative of a motion picture, among data contained in the video mail, are first sent by an ordinary method. Video data in the video mail are thereafter transmitted from the divisional transmission unit to the divisional reception unit by a plurality of separate operations. Such a construction can realize data transfer of the video mail which relieves traffic in multimedia data transmission and also copes with the urgency of the mail while making the best use of an existing network.
摘要:
An image coding system and method thereof previously defines a plurality of combinations into a table. The table includes candidate values for quantizing steps and candidate values for upper limit values of space frequencies in correspondence with an image code size. The frequencies are coded into the pattern table on the basis of an error between the required code size, which is decided by the system performance, and required images. The generated code size is taken at the time of prediction coding between motion compensation frames. One combination of a quantizing step and upper limit values of space frequency are selected. The combination is coded from the candidate values depending on the image attribute and codes conforming to an international standard. The combinations are generated at a satisfactory coding efficiency. The coding efficiency is achieved by controlling the coding parameters depending on the image attribute and generated code size.
摘要:
A data converting device which includes an input device which receives input information containing one or more kinds of data, a data analyzer which checks each kind of data constituting the input information and extracts data from the input information when the checked data are judged to be predetermined conversion target data to be subjected to a data conversion processing, and a controller which performs the conversion processing on an amount of the extracted data in accordance with a predetermined regulation for the kind of data. The invention further includes an information constructing device which replaces the non-converted data of the input information which converted extracted data, thereby reconstructing the input information, and an output device which outputs the reconstructed input information.
摘要:
An information processing apparatus for processing video data and video data with audio data includes a scene change detecting device for particularly detecting a scene change of video data. The video data scene change detecting device includes an intra-coded frame detecting device for detecting a scene change between an intra-coded frame contained in video data and an intra-coded frame preceding the frame and a scene change information recording device for recording scene change information detected by the intra-coded frame detecting device.
摘要:
The resonator comprises two capacitively coupled electrodes. One of the electrodes is made of a p-type doped semiconductor material, whereas the other electrode is made of an n-type doped semiconductor material. The invention also comprises a method of using this specific selection of the doping for enhancing the output signal current from a resonator.
摘要:
A high-frequency module is provided that includes a reception portion that processes a reception signal received by a reception antenna, and a transmission portion that processes a transmission signal to be supplied to a transmission antenna. The reception portion includes a demultiplexer circuit that divides a reception signal received at the reception antenna to two reception lines having different frequency bands from each other. The transmission portion includes power amplifier circuits and a demultiplexer circuit. The high-frequency module is configured so that the demultiplexer circuit and the like included in the reception portion, as well as the power amplifier circuits and the demultiplexer circuit included in the transmission portion, are provided inside a multi-layer substrate.
摘要:
The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than −150° C.
摘要:
A heat treatment method of steel is capable of enhancing wear resistance, mechanical properties and dimensional stability of the steel due to the reduction of the retained austenite amount to substantially zero. In the method, an article of the steel is subjected to a quenching and then subzero treatment including cooling it at a cooling rate of 1 to 10° C./min. to a cooling temperature and holding the cooling temperature for a predetermined period of time.
摘要:
A flexible tube having high flexibility and high resistance to pressure and causing little twist and elongation when subjected to a high internal pressure. A flexible tube 21 has an inner tubular layer 11 made of a soft resin, an inner spiral reinforcement 1 made of a hard resin and helically wound around the inner tubular layer 11, an intermediate tubular layer 12 made of a soft resin and surrounding the inner spiral reinforcement 1, and an outer spiral reinforcement 4 made of a hard resin and helically wound around the intermediate tubular layer 12 in the direction opposite to the winding direction of the inner spiral reinforcement 1. As the direction of the helix of the inner and outer spiral reinforcements 1 and 4 are opposite to each other, forces due to internal pressure acting to twist the helixes are canceled out.