摘要:
In serial transmission of a mixture of isochronous data and anisochronous data, communications through a transmission path with a high ratio of occurrence of transmission errors may disturb images during streaming reproduction and produce noise in sound. To solve this problem, the isochronous data that has not been successfully received is retransmitted by using an anisochronous region. Thus, a transmission error of the isochronous data can be reduced without impairment of isochronous characteristics of the data.
摘要:
The presented invention provides methods and apparatus to generate a efficient medium dedication schedule which give wireless medium the ability to serve real-time and non real-time application concurrently and still be able to maintain the QoS as requested by real-time application. Furthermore, it also presents methods for implementing buffer in an efficient matter in order to complement the advantage introduced by burst transmission and burst acknowledgement.
摘要:
A device consists of: a first unit which divides voice and image data into blocks each consisting of a predetermined number of data, and executes a method of selecting one of plural error correction encoding systems and conducting encoding on an arbitrary number of data in one block; a second unit which executes a method of measuring an error state of a communication channel; and a third unit which executes a method of determining data which are to be subjected to encoding conducted in the first unit, and an error correction encoding system. When the state of the communication channel is inferior, only data of high importance can be protected. When the state is superior, a wide range of data including those of low importance can be protected.
摘要:
The current invention discloses photocopying methods and systems for substantially eliminating shadows caused by uneven surfaces of an original by the use of a light diffusing element or a carrier sheet which automatically triggers the associated photocopying parameters. The light diffusing element has a marker or an identification code which is detected by a sensor placed along a paper path, and the marker contains various type of information used for adjusting the photocopying conditions associated with the use of the light diffusing element. The light diffusing element is also designed to be used with an automatic document feeder.
摘要:
A process for producing a copper-clad laminate using a copper foil obtained by subjecting the surface of the copper foil to chemical oxidation thereby to form, on the surface, a fine roughness constituted by a copper oxide of a brown to black color and then reducing the copper oxide constituting the fine roughness in an atmosphere in which a reducing gas is present.
摘要:
Process for producing a copper plated resin article by forming a uniform copper coating having excellent adhesive strength on a fiber-reinforced or unreinforced thermoplastic or thermosetting resin article having a heat deformation temperature higher than 165.degree. C. The resin article is heated along with a source of copper formate under a reduced pressure or in a non-oxidative atmosphere to a temperature in the range above 165.degree. C. but lower than the heat deformation temperature of the resin article. The process makes it possible to produce a resin article having formed thereon a copper layer having an excellent adhesive strength by a very simple manner, and the resin article thus obtained can be used in various industrial fields.
摘要:
A process for producing copper formate, which comprises subjecting methyl formate to a liquid-phase hydrolysis reaction at a temperature from 60 to 85.degree. C. in the presence of copper carbonate.
摘要:
The invention relates to a sintered silicon nitride-silicon carbide composite material excellent in toughness and strength and to a process for producing the same. The present sintered composite material is substantially formed of silicon nitride predominantly in .beta.-phase and about 5 to 35% by weight of silicon carbide predominantly in .beta.-phase, which is characterized by the microstructure such that the silicon nitride is in the form of fine grains comprising elongated grains, 0.2 to 1.0 .mu.m in length of minor axis and 1 to 10 .mu.m in length of major axis, and equiaxed grains, 1 .mu.m or below in average size, and the silicon carbide is in the form of equiaxed grains, 1 .mu.m or below in average size, said silicon carbide grains being uniformly dispersed. Having a three-point flexural strength of at least 95 kg/mm.sup.2 and a fracture toughness (K.sub.IC) of at least 54 MN/m.sup.3/2, the present sintered material is excellent in toughness and strength. The process for producing such a material is disclosed in detail.
摘要:
A CPU 14 detects a value of an output bit rate of media data output from a buffer 17, detects a value of a free space of the buffer 17, and divides a value resulted from subtracting a decrease ratio set value from the detected value of the free space by a saved period. As a result, a value of a decrease ratio is obtained. In order to decrease a value of an input bit rate of media data input to the buffer 17 in accordance with the value of the output bit rate, the CPU 14 decreases the value of the input bit rate based on an upper limit of the input bit value that is a value resulted from adding the detected value of the output bit rate and the calculated value of the decrease ratio.
摘要:
In a design-system distributing method, when a server side design system is updated, a server compares an updated server side design system and a client update state data, and the server distributes an update assisting system, an update indication data and a difference data to a client system based on the comparing result. The client system stores the update assisting system, the update indication data and the difference data, and the client system starts the stored update assisting system such that an update notice is outputted to a user of the client system to urge update of the client side design system each time a preset condition is satisfied until an update command of the client side design system is supplied to the client system. The client system updates the client side design system based on the stored update indication data and the stored difference data in response to the update command. The client system generates and transmits the client update state data to the server to indicate an update state of the client side design system for this time, and the server updates the client update state data based on the client update state data received from the client system.