Abstract: Embodiments of the keyboard system that can determine accurate key operation. The system provides immediate processing of the data input streams from various strike sources, the key stroke depth data, the key strike speed data, the key strike acceleration data. The movement state volume V can be calculated using a formula shown below, based on the key strike depth D, the key speed S, the key acceleration A, the coefficient a, b, c, and constant d. V=a*D+b*S+c*A+d. When the volume level exceeds the predetermined level A, the system determines that the key has been pressed. When it is determined that the key has been pressed, the “note-on” information is outputted to the sound source. The velocity value included in the “note-on” information is calculated with reference to the velocity curve based on the key speed when it is determined that the key has been pressed.

Abstract: An electronic musical instrument comprising a CPU, a display device, operators, a data interface, and a storage device storing music tone data, all interconnected via a bus line, wherein upon an inquiry from a PC connected to the data interface for a device identity, the electronic music instrument transmits via the data interface the device identity of a removable media drive. In some embodiments, wherein upon commands sent from the PC, the electronic musical instrument transmits the stored music tone data in a format consistent with the removable media drive. An electronic music system comprising such an electronic musical instrument connected to a PC via a data interface. A method of data communication between an electronic music instrument and a PC.

Abstract: Embodiments of the keyboard system that can determine accurate key operation. The system provides immediate processing of the data input streams from various strike sources, the key stroke depth data, the key strike speed data, the key strike acceleration data. The movement state volume V can be calculated using a formula shown below, based on the key strike depth D, the key speed S, the key acceleration A, the coefficient a, b, c, and constant d. V=a*D+b*S+c*A+d. When the volume level exceeds the predetermined level A, the system determines that the key has been pressed. When it is determined that the key has been pressed, the “note-on” information is outputted to the sound source. The velocity value included in the “note-on” information is calculated with reference to the velocity curve based on the key speed when it is determined that the key has been pressed.

Abstract: An electronic musical instrument comprising a CPU, a display device, operators, a data interface, and a storage device storing music tone data, all interconnected via a bus line, wherein upon an inquiry from a PC connected to the data interface for a device identity, the electronic music instrument transmits via the data interface the device identity of a removable media drive. In some embodiments, wherein upon commands sent from the PC, the electronic musical instrument transmits the stored music tone data in a format consistent with the removable media drive. An electronic music system comprising such an electronic musical instrument connected to a PC via a data interface. A method of data communication between an electronic music instrument and a PC.

Abstract: An electronic musical instrument has a server section to enable instrument settings to be made by remote control from a terminal on a client side through a communications circuit such as the Internet, and thus makes it possible to easily carry out the setting and resetting of an electronic musical instrument for which specialized knowledge is required.

Abstract: A scheduling computer system optimizes the match between allocation of processes and resources. To do so, the system temporarily allocates the resources to a process selected based on the attributes of the resources and the processes, as well as the processing start and desired processing end times. In doing so, the system avoids selecting processes to which resources have been already allocated. The system also determines a resulting time value and a resulting fitness value based on the temporary allocation. Using the resulting time value and the resulting fitness value, the system determines the optimum resource for a particular process and allocates the resource to the process accordingly. The system also generates a scheduling chart illustrating the resource allocation.

Abstract: A process for the preparation of a silicon carbide sintered body of high purity which has a content of 1 ppm or less of each atom harmful to the manufacture of semiconductor equipment including the step of shaping a silicon carbide powder, calcining the shaped body in a non-oxidizing atmosphere to form a porous body, and subjecting the porous body to reaction sintering while being impregnated with molten metallic silicon. The starting silicon carbide powder also has a content of 1 ppm or less of each harmful atom and it has a free carbon content of not greater than 20% by weight and an average particle diameter of 0.5-20 .mu.m.

Abstract: In an inference system, an inference mode and a knowledge editing mode can conduct inference with an inherent effect by using knowledge represented by frames in a hierarchical structure, the frames having a relationship of a parent frame being higher in the hierarchical structure than a child frame thereof. Such an inference system includes a mode determining section for selecting the knowledge editing mode or the inference mode, a storage area for storing only information intrinsic to a frame in the hierarchical structure into the frame when the knowledge editing mode is selected by the mode determining section, and a storage area for storing into the frame both information intrinsic to the frame and information inherited by the frame from frames higher in the hierarchical structure than the frame when the inference mode is selected by the mode determining section.

Abstract: A process for the preparation of a beta-silicon carbide powder of high purity which is suitable for use in the manufacture of semiconductor equipment and which has a content of 1 ppm or less of each atom harmful to the manufacture of semiconductor devices. The process comprises preparing a carbon- and silicon-containing starting mixture comprising (a) at least one siliceous material selected from liquid silicon compounds and solid siliceous substances derived from a hydrolyzable silicon compound, and (b) at least one carbonaceous material selected from polymerizable or cross-linkable organic compounds prepared in the presence of a catalyst which is substantially free from atoms harmful to the manufacture of semiconductor devices. The starting mixture comprises at least one liquid substance used as component (a) or (b). The starting mixture is then solidified by heating and/or by use of a catalyst or a curing agent.

Abstract: Disclosed herein is a practical knowledge acquisition system, in which, when a diagnosis is made using a knowledge base in the form of an associative network turns out to be erroneous, the network is analyzed backwards from the node representing a desired solution, thereby detecting a node where the backward analysis route joins that analysis route in the network which has resulted in the erroneous diagnosis. The node where the two analysis routes join is identified as one possibility where an error has occurred in the diagnosis. The diagnostic knowledge applied at this node is seen as an candidate to be modified many modification plans for the incorrect knowledge is proposed, the diagnostic knowledge base can be modified with high efficiency.

Abstract: An inference system is disclosed, the inference system comprising rule storing portion for storing a plurality of production rules, each of which is composed of an "if statement" and a "then statement", fact information storing portion for storing fact information, condition comparing portion for comparing the "if statement" of each production rule stores in the rule storing portion with the fact information stored in the fact information storing portion successively until a resource of the process system or the inference system is consumed, conflict resolving portion for selecting one of at least one production rule obtained as the results of the comparison by the condition comparing portion when the resource is consumed, and rule executing portion for executing the "then statement" of the production rule being selected by the conflict resolving.