Kevin T Hinchey

US Patent:

6362854, Mar 26, 2002

Filed:

Nov 16, 1999

Appl. No.:

09/440965

Inventors:

John R. Fierke - Hopkinton MA
Marshall Richard Houskeeper - Upton MA
Kevin Hinchey - Northborough MA

Assignee:

Media 100 Inc. - Marlborough MA

International Classification:

H04N 974

US Classification:

348584, 348598

Abstract:

Apparatus and method for combining first and second video streams and a border color into a combined output video stream using a multiplexer and a video combiner. The multiplexer receives the first and second video streams as input and outputs a selected video stream in response to a control signal. The video combiner receives the border color at a first input and the selected video stream from the multiplexer at a second input and outputs a combined output based upon a key received at a key input.

US Patent:

59995416, Dec 7, 1999

Filed:

Feb 28, 1997

Appl. No.:

8/807267

Inventors:

Kevin Hinchey - Northborough MA
Timothy A. Mancour - Wrentham MA

Assignee:

3COM Corporation - Santa Clara CA

International Classification:

H04L 1256

US Classification:

370466

Abstract:

Token Ring network packet having a header and an information field is prepared for transmission over an Ethernet network by the steps of removing the header information from the Token Ring packet, and associating a second header with the information field of the Token Ring packet, wherein the second header is compatible with the Ethernet network. More particularly, to prepare an IEEE 802. 5 Token Ring network packet for transmission on an Ethernet network the Access Control ("AC") and Frame Control ("FC") fields are removed, the order of the destination address ("DA") field is reversed, the order of the source address ("SA") field is reversed, a Virtual Local Area Network ("VLAN") type field is added, a VLAN identification ("ID") field is added, and a length value field is added. The information field from the Token Ring packet is retained. However, if the newly formed tunneled packet would otherwise be smaller than the minimum size for an Ethernet packet the information field may be padded with null bits until the minimum size for an Ethernet packet is achieved.