System for controllably eliminating bits from packet information field based on indicator in header and amount of data in packet buffer
First Claim
1. Apparatus for use in an arrangement for transmitting packets, each of the packets having a header and an information field including a plurality of bits, comprising,a field in the header of each current packet including a bit elimination indicator indicating whether or not bits may be eliminated from the current packet information field,buffer storage means for storing bits of currently supplied packets,means for determining the amount of packet bits presently stored in said buffer storage means,means for comparing an amount of packet bits presently stored in said buffer storage means to predetermined threshold levels to generate bit elimination control signals, andmeans responsive to said bit elimination control signals and to said bit elimination indicator for controllably eliminating bits from the packet information field of a current packet being supplied to said buffer storage means, if necessary, wherein the length of said packet is shortened, if necessary.
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Accused Products
Abstract
Buffer memory overflow control is realized by controlling the amount of packet data being inputted to the buffer memory in response to the amount of packet data stored in the buffer memory. Depending on the type of coding being employed and the amount of data stored in the buffer memory, one or more groups of bits are controllably dropped from the packet information field being inputted into the buffer memory.
112 Citations
9 Claims
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1. Apparatus for use in an arrangement for transmitting packets, each of the packets having a header and an information field including a plurality of bits, comprising,
a field in the header of each current packet including a bit elimination indicator indicating whether or not bits may be eliminated from the current packet information field, buffer storage means for storing bits of currently supplied packets, means for determining the amount of packet bits presently stored in said buffer storage means, means for comparing an amount of packet bits presently stored in said buffer storage means to predetermined threshold levels to generate bit elimination control signals, and means responsive to said bit elimination control signals and to said bit elimination indicator for controllably eliminating bits from the packet information field of a current packet being supplied to said buffer storage means, if necessary, wherein the length of said packet is shortened, if necessary.
Specification