US Patent No: 6,373,846

Number of patents in Portfolio can not be more than 2000

Single chip networking device with enhanced memory access co-processor

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Abstract

An asynchronous transfer mode (ATM) digital electronic communication system includes an ATM communication system interconnection and termination unit (ATMCSI/TU). This ATMCSI/TU includes both a programmable microprocessor and several hardware-implemented coprocessors. The hardware-implemented coprocessors are under control of the microprocessor, and are dedicated to the performing of repetitive tasks. Thus, the microprocessor is freed to perform supervisory tasks in the ATM in addition to performing tasks associated with actual communication of digital data packages (i.e., CS-PDU's) in the ATM system. Thus, the APU is freed from doing respective data manipulation tasks, while these tasks are performed by one or more hardware-implemented coprocessors using memory mapped data structures and linked lists of data.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
LSI LOGIC CORPORATIONMILPITAS, CA4131

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Daniel, Thomas Waldsee, DE 134 858
Nattkemper, Dieter San Jose, CA 8 216
Varma, Subir San Jose, CA 45 674

Cited Art

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (5)
5,121,390 Integrated data link controller with synchronous link interface and asynchronous host processor interface 67 1990
5,218,680 Data link controller with autonomous in tandem pipeline circuit elements relative to network channels for transferring multitasking data in cyclically recurrent time slots 100 1990
5,533,020 ATM cell scheduler 164 1994
5,920,564 Method and apparatus for direct memory access on transmit complete 4 1997
5,940,404 Method and apparatus for enhanced scatter mode allowing user data to be page aligned 11 1997
 
HITACHI, LTD. (4)
5,175,818 Communication interface for independently generating frame information that is subsequently stored in host memory and sent out to transmitting fifo by dma 29 1989
4,956,839 ATM switching system 135 1989
5,157,662 Data communication apparatus having communication-mode changeover function and method of data communication between data communication stations having the same 90 1991
5,189,668 ATM switch and ATM multiplexer 34 1991
 
NEC CORPORATION (3)
5,079,762 Asynchronous transfer mode switching network using waiting buffers for routing high service grade cells during congested traffic 45 1990
5,130,975 Dual port memory buffers and a time slot scheduler for an ATM space division switching system 107 1990
5,412,655 Multiprocessing system for assembly/disassembly of asynchronous transfer mode cells 49 1994
 
TTI INVENTIONS A LLC (3)
5,130,984 Large fault tolerant packet switch particularly suited for asynchronous transfer mode (ATM) communication 108 1990
5,166,926 Packet address look-ahead technique for use in implementing a high speed packet switch 129 1990
5,533,009 Bandwidth management and access control for an ATM network 119 1995
 
LSI LOGIC CORPORATION (2)
5,446,726 Error detection and correction apparatus for an asynchronous transfer mode (ATM) network device 114 1993
5,726,985 ATM communication system interconnect/termination unit 50 1996
 
QUALCOMM INCORPORATED (2)
5,311,509 Configurable gigabits switch adapter 244 1992
5,440,523 Multiple-port shared memory interface and associated method 37 1993
 
SUN MICROSYSTEMS, INC. (2)
5,610,921 Scalable architecture for asynchronous transfer mode segmentation and reassembly 55 1995
5,689,509 Apparatus and method for packetizing and segmenting MPEG packets 30 1996
 
AG COMMUNICATION SYSTEMS CORPORATION, 2500 W. UTOPIA RD., PHOENIX, AZ 85027, A DE CORP. (1)
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ALCATEL N.V. (1)
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AT&T BELL LABORATORIES (1)
5,136,584 Hardware interface to a high-speed multiplexed link 137 1990
 
BRITISH TECHNOLOGY GROUP LIMITED (1)
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CALIFORNIA INSTITUTE OF TECHNOLOGY (1)
5,105,424 Inter-computer message routing system with each computer having separate routinng automata for each dimension of the network 144 1988
 
CDC PROPRIETE INTELLECTUELLE (1)
5,530,902 Data packet switching system having DMA controller, service arbiter, buffer type managers, and buffer managers for managing data transfer to provide less processor intervention 38 1993
 
CISCO TECHNOLOGY, INC. (1)
5,313,454 Congestion control for cell networks 594 1992
 
ECHELON SYSTEMS CORPORATION (1)
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ERICSSON AB (1)
5,548,588 Method and apparatus for switching, multicasting multiplexing and demultiplexing an ATM cell 24 1995
 
FUJITSU LIMITED (1)
5,315,588 Method of controlling frame-relay module, and high-speed switching system 41 1993
 
HARRIS CORPORATION (1)
5,072,442 Multiple clock rate teleconferencing network 123 1990
 
KABUSHIKI KAISHA TOSHIBA (1)
5,541,926 ATM cell assembly and disassembly device with enhanced data handling flexibility 154 1993
 
KDDI CORPORATION (1)
5,062,106 ATM exchange system 91 1990
 
LINK LABORATORY INC. (1)
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MOTOROLA MOBILITY, INC. (1)
5,396,490 Packet reassembly method and apparatus 48 1992
 
NETWORK EQUIPMENT TECHNOLOGIES, INC. (1)
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NIPPON TELEGRAPH AND TELEPHONE CORPORATION (1)
5,214,642 ATM switching system and adaptation processing apparatus 85 1991
 
SAGEMCOM BROADBAND SAS (1)
5,548,587 Asynchronous transfer mode adapter for desktop applications 115 1994
 
SGS-THOMSON MICROELECTRONICS LIMITED (1)
5,140,583 Message routing 44 1990
 
SIEMENS AKTIENGESELLSCHAFT (1)
5,153,920 Method and circuit arrangement for the acceptance and forwarding of message cells transmitted according to an asynchronous transfer mode by an asynchronous transfer mode switching equipment 17 1991
 
THOMSON-CSF (1)
5,220,563 Device for the transmission by an asynchronous network, notably an ATM type network, of signalling data, channel by channel, assembled in a multiframe transmitted synchronously in out-of-band mode 27 1991
 
VERIZON SERVICES CORP. (1)
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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
BROADCOM CORPORATION (21)
7,287,649 System on a chip for packet processing 5 2001
6,766,389 System on a chip for networking 73 2001
7,320,022 System on a chip for caching of data packets based on a cache miss/hit and a state of a control signal 2 2002
6,948,035 Data pend mechanism 6 2003
7,343,456 Load-linked/store conditional mechanism in a CC-NUMA system 2 2003
7,114,043 Ambiguous virtual channels 4 2003
7,340,546 Addressing scheme supporting fixed local addressing and variable global addressing 2 2003
6,941,440 Addressing scheme supporting variable local addressing and variable global addressing 9 2003
7,418,534 System on a chip for networking 1 2004
8,180,928 Method and system for supporting read operations with CRC for iSCSI and iSCSI chimney 0 2005
7,996,573 Method and system for supporting read operations with CRC for iSCSI and iSCSI chimney 0 2005
7,269,695 Ambiguous virtual channels 0 2006
8,116,203 Multiple virtual channels for use in network devices 0 2007
8,135,016 System and method for identifying upper layer protocol message boundaries 1 2007
8,402,142 System and method for TCP/IP offload independent of bandwidth delay product 0 2007
7,849,208 System and method for TCP offload 0 2008
7,912,064 System and method for handling out-of-order frames 1 2008
7,934,021 System and method for network interfacing 1 2009
7,991,922 System on a chip for networking 0 2009
7,929,540 System and method for handling out-of-order frames 4 2010
8,345,689 System and method for identifying upper layer protocol message boundaries 0 2010
 
CHEDMIN COMMUNICATION LTD., LLC (3)
6,888,830 Integrated circuit that processes communication packets with scheduler circuitry that executes scheduling algorithms based on cached scheduling parameters 23 2000
7,099,328 Method for automatic resource reservation and communication that facilitates using multiple processing events for a single processing task 4 2001
6,822,959 Enhancing performance by pre-fetching and caching data directly in a communication processor's register set 13 2001
 
AGERE SYSTEMS INC. (2)
7,590,056 Processor configured for efficient processing of single-cell protocol data units 0 2003
7,127,547 Processor with multiple linked list storage feature 1 2003
 
QUALCOMM INCORPORATED (2)
6,574,708 Source controlled cache allocation 33 2001
6,684,296 Source controlled cache allocation 9 2003
 
AVAYA INC. (1)
6,850,989 Method and apparatus for automatically configuring a network switch 11 2000
 
CAVIUM, INC. (1)
6,789,147 Interface for a security coprocessor 32 2001
 
CISCO TECHNOLOGY, INC. (1)
7,860,967 Network processor system including a central processor and at least one peripheral processor 0 2006
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
6,795,870 Method and system for network processor scheduler 34 2000
 
LSI CORPORATION (1)
7,257,673 Ternary CAM with software programmable cache policies 4 2006
 
LSI LOGIC CORPORATION (1)
7,039,756 Method for use of ternary CAM to implement software programmable cache policies 5 2003
 
NEC CORPORATION (1)
6,687,250 Device with quality controllable SAR function by upper layer instruction, LSI unit and quality control method by upper layer instruction 3 2000

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