US6157635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated remote data access and audio/visual conference gateway
Assignee: HP Inc
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Filing: 1998-02-13
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Granted: 2000-12-05
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Expires: 2018-02-13
Abstract
Abstract An apparatus for converting frame-type transmissions to packet-type transmissions. In one embodiment, the apparatus comprises a medium access controller (MAC) coupled to a packet-based network and multiple packet assembler/disassemblers (PADs). The PADs include a data link layer (DLL) PAD coupled to the MAC, a high level data link control (HDLC) PAD coupled to the DLL PAD, a network layer (NL) PAD coupled to the DLL PAD, and a NL/frame alignment sequence-bit-rate allocation signal (NL/FAS-BAS) PAD coupled to the DLL PAD. Multiple detection units are coupled to respective PADs, wherein each of the plurality of detection units detects a frame-type transmission.
Inventors
- 👤 Peter Si-Sheng Wang
- 👤 Ismail Dalgic
- 👤 Kenneth Araujo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:35
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0016; H04Q3/0025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
An apparatus for converting frame-type transmissions to packet-type transmissions, comprising: a medium access controller (MAC) coupled to a packet-based network; a plurality of packet assembler/disassemblers (PADs), comprising, a data link layer (DLL) PAD coupled to the MAC; a high level data link control (HDLC) PAD coupled to the DLL PAD; a network layer (NL) PAD coupled to the DLL PAD; and a NL/frame alignment sequence-bit-rate allocation signal (NL/FAS-BAS) PAD coupled to the DLL PAD; and plurality of detection units coupled to respective PADs, wherein each of the plurality of detection units detects a frame-type transmission.
Claim 2
Independent Claim
95 words
An apparatus for converting frame-type transmissions to packet-type transmissions, comprising: a medium access controller (MAC) coupled to a packet-based network; a plurality of packet assembler/disassemblers (PADs), comprising, a data link layer (DLL) PAD coupled to the MAC; a high level data link control (HDLC) PAD coupled to the DLL PAD; a network layer (NL) PAD coupled to the DLL PAD; and a NL/frame alignment sequence-bit-rate allocation signal (NL/FAS-BAS) PAD coupled to the DLL PAD; and plurality of detection units coupled to respective PADs, wherein each of the plurality of detection units detects a frame-type transmission.
Claim 3
Dependent Claim
44 words
The apparatus of claim 1, wherein the plurality of detection units comprises: an HDLC detection unit coupled to the HDLC PAD; a plain old telephone service (POTS) detection unit coupled to the NL PAD; and an FAS-BAS detection unit coupled to the NL/FAS-BAS PAD.
Claim 4
Dependent Claim
30 words
The apparatus of claim 2, further comprising: a channel controller coupled to the NL/FAS-BAS PAD and to the FAS-BAS detection unit; and a session table coupled to the channel controller.
Claim 5
Dependent Claim
24 words
The apparatus of claim 2, further comprising: a bridge/router controller coupled to the HDLC PAD; and a router table coupled to the bridge/router controller.
Claim 6
Dependent Claim
35 words
The apparatus of claim 4, further comprising a multiplexer coupled between the plurality of detection units and an integrated digital services network (ISDN), wherein the multiplexer comprises a control input coupled to the channel controller.
Claim 7
Dependent Claim
49 words
The apparatus of claim 5, wherein the HDLC detection unit comprises: a shift register that receives data from the multiplexer; a flag comparator coupled to the shift register; a checksum adder coupled the flag comparator and to the shift register; and a checksum comparator coupled to the checksum adder.
Claim 8
Dependent Claim
30 words
The apparatus of claim 5, wherein the POTS detection unit comprises: a shift register that receives data from the multiplexer; and a spectral power analyzer coupled to the shift register.
Claim 9
Dependent Claim
52 words
The apparatus of claim 5, wherein the FAS-BAS detection unit comprises a shift register that receives data from the multiplexer; and a cyclic redundancy check adder coupled to the shift register; a plurality of FAS comparators coupled to the shift register; and a cyclic redundancy check comparator coupled to the shift register.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-05 | 2004-06-05 | 2004-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-05 | 2008-06-05 | 2008-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-05 | 2012-06-05 | 2012-12-05 | $7700.00 | Window Closed / Lapsed |