Abstract: A multiplexing system (10) is provided which includes a plurality of encoders (12-15) which generates elementary streams, respectively, CPU (16), multiplexer (17), instruction memory (18), and a data memory (19) which stores a plurality of elementary data to be multiplexed. Each of the encoders (12-15) divides elementary data into units, and stores the data into the data memory (19). The CPU (16) generates, for each of the data units, instruction data having stated therein a storage location in the data memory (19) and stores the instruction data into the instruction memory (18). The multiplexer (17) reads the instruction data one by one from the instruction memory (18), and reads data units stated in the instruction data sequentially from the data memory (19), for generation of a multiplexed stream. Thus, the burden of processing to the controller can be lessened.

Abstract: A data transmission method able to maintain the quality of a transmitted image substantially same as that of one's own image and an apparatus using the method and a data transmission system, transmitting image data accommodated in a frame of a preset frame during communication between terminals, comprising capturing an image including a target image to be transmitted, making adjustments so that the target image to be transmitted from the obtained image substantially fully fills the image frame, and compressing and transmitting the adjusted image data in the image frame.

Abstract: An air discharge unit (100) for underfloor air conditioning employs a centripetal fan (2) to realize low pressure loss, low noise and energy saving while reducing the heightwise thickness of the whole unit. The centripetal fan (2) is installed in an underfloor chamber (104) formed between a floor panel (103) and a floor slab to face an outlet (1) provided in the floor panel 103, and is driven by a motor (4). The centripetal fan (2) has a hub (200) and a plurality of blades (20) formed on an outer surface of the hub (200), and sucks therein an air in the underfloor chamber (104) from radially outward direction to make the air spirally flow toward the outlet (1) generally in an axial direction.