Local communication system with plural data channels

Details Local communication system with plural data channels Local communication system with plural data channels

1993-12-15

1996-01-16

Hsu, Alpus

Multiplex communications

Wide area network

Packet switching

370 8513, H04J 302

Patent

active

054854598

ABSTRACT:
The system comprises a number of stations interconnected for the communication of control messages which are multiplexed with digital audio signals. The control channel is divided into eight parallel channels, and each station is allocated one channel to transmit on, while it receives from other stations on the other seven channels. Messages on each channel are segmented into finite message units. When a longer message is to be transmitted, the receiving station implement a locking mechanism such that message units will not be accepted on other channels until all message units of the message have been received. To allow the number of stations to exceed the number of data channels, some of the stations are designated "slave only", and share a single channel for the transmission of control messages. To avoid conflicts, these stations are permitted to transmit only in response to request messages from a station having its own exclusive transmit channel.

REFERENCES:
patent: 5289466 (1994-02-01), Nobitoki et al.
"Audio Local Area Network Chip for Cars", Knapp et al., 92nd Convention of the Audio Engineering Society, 24-27 Mar., 1992.
"Sony-Phillips Digital Interface Format (SPDIF)", Standardised by the Ingernational Electrochemical Commission, Geneva, with Ref. IEC 958:1989.

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