Nec Corporation

Kaneyuki Nishihara

Philip H Rittmueller

Akinobu Tomimori

An apparatus (and method) for connecting a first network and a second network operating at different clock frequencies to transfer data between them, includes a first interface to the first network, a second interface to the second network, a buffer memory connected to the first interface for storing data to be transferred, a clock converter connected between the buffer memory and the second interface performing a clock conversion according to a controlled clock signal corresponding to the first network and an extracted clock signal from the second network, a buffer monitor for monitoring an amount of data stored in the buffer memory and producing a buffer status signal, and a clock adjuster for adjusting the controlled clock signal depending on the buffer status signal.

Clock adjustment method and apparatus

An electronic device for generating an activation signal in response to detection of an acoustic signal having parameters within respective predetermined ranges, and then automatically dialing a prestored telephone number and transmitting a prerecorded message over the telephone line in response to the activation signal. The device includes a transducer for transducing an acoustic signal into an electrical signal; a detector for outputting an activation signal in response to detection of an acoustic signal having parameters within respective predetermined ranges; and a telephone module for automatically dialing a prestored number and transmitting a prerecorded message in response to the activation signal. The detected parameters include the amplitude of the acoustic signal, the frequency of the acoustic signal, the duration of each burst of the acoustic signal, and the duration of each interval between successive bursts of the acoustic signal.

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Tokyo, Japan

Kaneyuki Nishihara