Matsushita Electric Industrial Co., Ltd.

Noriyuki Hidaka

Shinichi Saeki

Yasushi Yoneda

Hiroyuki Asahi

Naoki Nakajima

Tadashi Ano

Minobu Abe

When an instructor such as a finger moves along a flat surface of a touch-sensitive tablet, a touch-sensitive tablet generates an input signal indicative of information of points touched with the instructor on the flat surface. A frame is provided around the touch tablet with a predetermined gap measured from the edge thereof. A maximum moveable range of the instructor of the flat surface is defined by the frame. The predetermined gap is determined such that the instructor can touch the periphery of the flat surface even when the movement of the instructor is restricted by the frame.

Touch-sensitive tablet

Disclosed is an apparatus of synchronizing parallel processing among a plurality of processors including a plurality of synchronization units respectively corresponding to the plurality of processors and a control unit. The control unit and the synchronization units are connected in a loop. Each synchronization unit outputs a sync signal for informing that the synchronization unit has entered a wait state to an adjacent downstream unit. The control unit outputs a pulse for informing a completion of a synchronization among the processors to an uppermost-stream synchronization unit. The pulse is forwarded as far as an lowermost-stream synchronization unit. Each synchronization unit includes the following: a flag hold unit holding a flag indicating a state of a respective processor, a logical OR circuit ORing a sync signal sent from an adjacent upstream synchronization unit with a value of the flag and outputting an obtained value to an adjacent downstream synchronization unit as a sync signal, a detection unit detecting the pulse in a value outputted from the logical OR circuit, thereby initiating the flag hold unit, and an output unit outputting the value outputted from the logical OR circuit to a respective processor.

Apparatus for synchronizing parallel processing among a plurality of

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Sakai, Japan

Noriyuki Hidaka