Multiplex communications – Pulse position modulation
Patent
1997-09-08
1999-10-05
Hsu, Alpus H.
Multiplex communications
Pulse position modulation
370445, 370461, 375239, H03K 708, H04L 12413
Patent
active
059635398
ABSTRACT:
A method and apparatus for detecting a collision between signal transmissions on a carrier medium, such as UTP wiring, are described. The method commences with the transmission of an access identifier from a transmitter of a network device. The transmitted access identifier has a predetermined duration and includes a pulse at a temporal location within the transmitted access identifier specific thereto. An access identifier is also received at a receiver of the network device. The received access identifier also has a predetermined duration, and includes a pulse at a temporal location therein. A determination is then made as to whether the temporal location of the pulse within the received access identifier corresponds to the temporal location of the pulse within the transmitted access identifier. If not, a collision is detected on the network.
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Jeffress Jeremiah
Webber, Jr. Harold H.
Hsu Alpus H.
Tut Systems, Inc.
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