Appeal 2007-0708
Application 09/881,367
the most suitable for carrying out the process indicated in the frame. (Title,
Abstract, col. 1, ll. 13-22, col. 2, ll. 15-19.)
6. The receiving device examines header information5 in the incoming
frame to determine the process to be carried out, such as forwarding the
frame to a designated destination address. (Col. 2, ll. 37-40 and ll. 57-64.)
7. As depicted in figures 1 and 2, the input frame data along with its
synchronization data are fed into the input data control circuit (22) having a
pipeline register (22A) and an encapsulation circuit (22B). (Col. 7, ll. 10-
15.)
8. The input frame data passes through pipeline register (22A) and the
encapsulation circuit (22B), which generates encapsulated data based on
protocol identification code obtained from the protocol recognition circuit
(26). (Col. 7, ll. 17-26.)
9. The input data is partially rewritten in the input control circuit (22) to
produce an output frame data signal DO6 for use by an external circuit (40)
(Col. 7, ll. 15-26.)
5 Protocol information (parameters) in a header of the received frame is
stored in a register having corresponding parameters. (Col. 8, ll. 16-21).
Header in a received frame data includes parameters indicating the type of
protocol, and the timing at which the parameter appears in the header. (Col.
11, ll. 58-62.) IP and TCP parameters include an offset/flag, an object
pointer (col. 13, 53-54), header length (col. 10, l. 27) that extracted from the
incoming frame.
6 As depicted in figures 12 through 19, DO and SB reference characters
designate an output frame data signal and a synchronizing signal which are
continuously output when the protocol recognition circuit recognizes a
protocol of the network layer. (Col. 12, ll.58-66.) The receiving circuit
submits the parameters of the incoming frame to a counter process and a
comparison process to produce parameters for an outgoing frame. (Col. 3, l.
48- col. 4, l. 11.)
6
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