Sony Corporation

Tomomasa Kojo

Tetsuya Aoki

Kenji Shiba

Ryuta Miyoshi

Yuji Ogihara

A signal reproduction device and signal reproduction method capable of automatically discriminating the format of input data and reproducing the data is provided. The signal reproduction device comprises an IEEE 1394 link chip, which receives transmission signals obtained by converting data in a plurality of prescribed signal formats into a prescribed packet format and transmitting, and reproduces signals in a prescribed signal format from the received transmission signals in packet form, as well as an IEEE 1394 microcontroller, which extracts a prescribed packet of received transmission signals, detects data in the extracted packet indicating modification from the signal format currently being received to another prescribed signal format, and based on the detected signal format modification data, outputs parameters necessary for reproduction of signals in another prescribed signal format from received signals in packet form; and the signal reproduction device automatically discriminates the data format of input data and reproduces the data.

Signal reproducing apparatus and signal reproducing method

A multiformat-compatible receiving apparatus is quickly compatible with a change in the signal type of a received signal. Responsive to the detection of a stream change to an invalid data stream (ancillary no data), a signal processing means is controlled to have a setting compatible with the signal type of the invalid data stream (F&#x2192;F). Thus, the setting of the signal processing means is predictively changed so as to be compatible with the signal type of real data to arrive next. When a stream change to a real data stream is actually detected, a receiving means is controlled to have a setting compatible with the signal type of the real data stream (F).

Reception apparatus and reception method

When a first computer on a network is subjected to a shutdown operation, the first computer sends a power-off request to other computers on the network. If a second computer that has received this power-off request cannot be powered off, the second computer determines whether or not the power-off request is from a communication partner of the second computer. If the power-off request is not from a communication partner, the second computer remains powered on. If the power-off request is from a communication partner, the second computer returns to the communication partner a response indicating a refusal to accept the power-off request. If the communication partner receives the response indicating a refusal to accept the power-off request, the communication partner remains powered on. A computer that has sent a power-off request is powered off if it does not receive a response indicating a refusal to accept the power-off request.

Server, client, and method for shutting down power of computers on network

Reproduced time-continuous data is transmitted or discarded in units of a predetermined amount depending on a data processing status of another device connected via a network, whereby matching in temporal relationship with respect to data received by another device is realized.

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Tokyo, Japan

Tomomasa Kojo