Metrobility Optical Systems, Inc.

Lancast, Inc.

Aleksandr L Kupchik

Sorhaug Asbjorn

Yeh-Tsong Wen

Asbj&oslash;rn S&oslash;rhaug

Asbjo Slashedrn So Slashedrhaug

A bi-directional network medium monitor including a tap apparatus connected inserted in a network media, e.g. Fiber Optic (FX) and Twisted Pair (TX), comprising a transceiver and a clock recovery element for each medium and medium monitor connection, and a bi-directional serial data multiplexer which directs the medium data while in the serial data format. Also, the medium monitor may interrupt medium data transfer in either medium direction and insert its data for diagnostic or other network purposes. Thus, the apparatus according to the present invention is operable to monitor a network at the maximum data rates currently used while providing no significantly network data delay.

Full-duplex medium tap apparatus and system

A bidirectional network medium translator connected between two dissimilar network media, e.g. Fiber Optic (FX) and Twisted Pair (TX), comprising a transceiver and a clock recovery element for each medium, and a bidirectional serial buffer which receives, processes and transmits the data while in the serial data format. Thus, the apparatus according to the present invention is operable to the maximum data rates currently used, provides significantly reduced data delay, and may be field-modified to a variety of different media.

Serially buffered medium translator

A bi-directional network medium translator and automatic redundant media data path switch connected between two dissimilar network media, e.g. Fiber Optic (FX) and a plurality of Twisted Pair (TX) data paths, comprising a transceiver and a clock recovery element for each medium, a multiplexer which selectively connects one of said redundant data paths according to a detected master data path failure, and a bi-directional scrambler/descrambler which receives, processes and transmits the data while in the serial data format. Thus, the apparatus according to the present invention is operable to the maximum data rates currently used, provides significantly reduced data delay and reduced lost data due to data path failures and lengthy path switchover times, and may be field-modified to a variety of different media.

Redundant path data switch and media translator

A high speed data network having a novel data translator having an SRAM data buffer in the full to half duplex direction and flow control media access elements, such as for detecting data collision and retransmission of data, for providing transparent high data rate transfer between full and half duplex data media. The main SRAM data buffer provides multiple frame FIFO storage and configured to provide alternating incoming and outgoing data access. The preferred embodiment further includes main SRAM incoming FIFO and outgoing FIFO memories. The outgoing FIFO memory is configured to operate in an alternating in/out memory access (independent of the main SRAM incoming and outgoing data access) providing data byte access after the byte is written from the main SRAM. Furthermore, the outgoing FIFO memory supplies the data to be retransmitted in the event of a data collision, without interrupting the operation(s) of the main SRAM buffer. Various network configurations according to the present invention provide high speed CSMA/CD data exchange according to existing and future data and medium formats over a greatly extended distance.

Growing community of inventors

Nashua, NH, United States of America

Aleksandr L Kupchik