Abstract: A skill transfer mechanical apparatus includes an operating part, a controller, a motion information detector and an operation apparatus. The controller includes a basic motion instructing module, a learning module, a motion correcting instruction generator, a motion correcting instruction, and a motion information storing module. The learning module carries out machine learning of the motion correcting instruction stored in the motion correcting instruction storing module by using the motion information stored in the motion information storing module, and after the machine learning is finished, accepts an input of the motion information during the operation of the operating part, and outputs the automatic motion correcting instruction. The operating part moves the working part according to an automatic motion instruction based on the basic motion instruction and the automatic motion correcting instruction, and the manual motion correction.

Abstract: A navigation communication system in which a plurality of clients access information stored in a server via a network, having a personal information control section provided in the server and controls the personal information of the users of the clients which access the same information and a personal information display section provided in the client and displays the personal information controlled by the personal information control section, a selector for selecting one of the personal information displayed, and a communication application section for communicating with a client corresponding to the selected personal information.

Abstract: Each optical transceiver comprises a photoemissive device for generating a signal light of near-infrared rays, a photoreceptor for receiving the signal light of the near-infrared rays, and an optical lens for converting the signal light outputted from the photoemissive device into a substantially collimated light so as to emit the light into a desired direction and for guiding the signal light from the same direction to the photoreceptor. Directivities of the respective optical transceivers are directed to the same portion on the indoor optical diffusing surface such as a ceiling.

Abstract: The multicast communication scheme which can enable a user to easily comprehend the multicast groups existing on the network, easily carry out an operation to join a desired multicast group, and easily specify a desired communication quality. At each user terminal, a virtual space with a plurality of regions defined therein in correspondence to a plurality of multicast groups is displayed on a screen, while an information indicating a range of each region in the virtual space is stored in correspondence to an address information for a corresponding multicast group. A desired position in the virtual space on the screen is specified by an input device, and joining/leaving to/from multicast groups is controlled by using the address information stored in correspondence to a region in the virtual space which contains the desired position.