Abstract: A sound signal control device includes a change determining unit to determine a change of a reproduction speed of input data containing a moving picture signal and a sound signal; a changeover detecting unit to detect, as a changeover timing, a period in which a degree of coincidence of a moving picture is equal to or larger than a predetermined value when the change determining unit determines the change to a different reproduction speed during the reproduction; a reproducing unit to reproduce a sound and the moving picture based on the input data and, when the change determining unit determines the change of the reproduction speed, changing over the reproduction speed at the changeover timing; and a sound control unit to mute a sound output based on the sound signal at the changeover timing.

Abstract: A graphic processing system for accomplishing high-speed processing of data conversion processing by effectively utilizing file information of input graphic data to improve processing efficiency of data processing inside blocks, and by optimizing block division.

Abstract: A switchboard control system in which a plurality of switchboards are connected to a time division exchange and controlled by the time division exchange. A speech signal and a control signal (a signal for key information, display information, subscriber number information and other information necessary for the exchange operation by a switchboard operator), which are delivered and received by each switchboard and the time division exchange, are transmitted together by a common transmission line on a time-division-multiplexed basis. On the side of the system toward the switchboards are disposed a position controller, by which the signals are multiplexed and separated and the common transmission line and the switchboards are interconnected. For delivering and receiving the signals, common channel signalling equipment is connected to the time division exchange and remote channel signalling equipment is provided in the position controller.