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US5935208A Expired / Lapsed US ⏱️ 0.0 years remaining

Incremental bus reconfiguration without bus resets

Assignee: Apple Inc
•
Filing: 1998-11-06
•
Granted: 1999-08-10
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Expires: 2018-11-06
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Abstract

Abstract An electronic system interconnect. The interconnect comprises a first node and a second node coupled to the first node. The interconnect is initially configured to include the first and second nodes. A third node is added to the interconnect after the interconnect is initially configured, and the first node responds to the addition of the third node by initiating a new connect handshake with the third node. The first node begins by transmitting a first signal to the third node. The first node signals that the third node has been added to the interconnect if the third node responds to the first signal by transmitting a second signal. The first node causes the interconnect to be reconfigured if the third node transmits a third signal in response to receiving the first signal.

Inventors

  • 👤 William S. Duckwall
  • 👤 Michael D. Teener

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 00:13
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/28; H04L12/40; H04L12/40052; H04L12/40078; H04L12/46; H04L41/00; H04L41/08; H04L41/0803; H04L41/0806; H04L41/0813; H04L41/0816; H04L41/12; H04L61/00; H04L61/50; H04L61/5038; H04L61/5053; H04L61/5076; H04L61/5092; H04L2101/00; H04L2101/60; H04L2101/604; H04L2101/618; H04L2101/622

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 230 words
A node for use in an electronic system interconnect comprising: at least one port including a first port operative to transmit and receive data when electrically connected to another node; a first circuit coupled to the first port operative to detect when an electrical connection is made between the first port and a second node; and a second circuit coupled to the first port operative to detect how many ports are connected to transmit and receive data after the electrical connection is made between the first port and the second node, wherein the node is operative to initiate a new connect handshake with the second node by transmitting a first signal via the first port if the node has more than one connected port, the node being operative to wait for the second node to initiate the new connect handshake by transmitting the first signal to the node if the node has only one connected port, the node transmitting a reset request if the node and the second node contemporaneously assert the first signal, and wherein the node transmits a second signal in response to receiving the first signal, the second signal completing the new connect handshake, thereupon the second node is added to the interconnect without requiring a reset request by the first node, the second node being assigned a bus address after the assumption of a temporary address.
Claim 2
Dependent Claim 230 words
A node for use in an electronic system interconnect comprising: at least one port including a first port operative to transmit and receive data when electrically connected to another node; a first circuit coupled to the first port operative to detect when an electrical connection is made between the first port and a second node; and a second circuit coupled to the first port operative to detect how many ports are connected to transmit and receive data after the electrical connection is made between the first port and the second node, wherein the node is operative to initiate a new connect handshake with the second node by transmitting a first signal via the first port if the node has more than one connected port, the node being operative to wait for the second node to initiate the new connect handshake by transmitting the first signal to the node if the node has only one connected port, the node transmitting a reset request if the node and the second node contemporaneously assert the first signal, and wherein the node transmits a second signal in response to receiving the first signal, the second signal completing the new connect handshake, thereupon the second node is added to the interconnect without requiring a reset request by the first node, the second node being assigned a bus address after the assumption of a temporary address.
Claim 3
Dependent Claim 29 words
The node claimed in claim 1, wherein the node transmits a reset request if the node waits a predetermined time before receiving the first signal from the second node.
Claim 4
Dependent Claim 14 words
The node as claimed in claim 1, wherein the interconnect is a serial bus.

References Cited (Backward Citations)

US4860201A Cited
US5199106A Cited
US4845744A Cited
US5018139A Cited
US5263163A Cited
US5317693A Cited
US5386567A Cited
US5457784A Cited
US5548567A Cited
US5394556A Cited
US5805834A Cited
US5548712A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2002-08-09 2003-02-08 2003-08-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2006-08-09 2007-02-08 2007-08-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2010-08-09 2011-02-08 2011-08-10 $7700.00 Window Closed / Lapsed

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