Patents by Inventor Subhasis Pal

Subhasis Pal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070121499
    Abstract: An improved data networking technique and apparatus using a novel physically distributed but logically shared and data-sliced synchronized shared memory switching datapath architecture integrated with a novel distributed data control path architecture to provide ideal output-buffered switching of data in networking systems, such as routers and switches, to support the increasing port densities and line rates with maximized network utilization and with per flow bit-rate latency and jitter guarantees, all while maintaining optimal throughput and quality of services under all data traffic scenarios, and with features of scalability in terms of number of data queues, ports and line rates, particularly for requirements ranging from network edge routers to the core of the network, thereby to eliminate both the need for the complication of centralized control for gathering system-wide information and for processing the same for egress traffic management functions and the need for a centralized scheduler, and elimina
    Type: Application
    Filed: November 28, 2005
    Publication date: May 31, 2007
    Inventors: Subhasis Pal, Rajib Ray, John Eppling
  • Patent number: 6999464
    Abstract: A novel scalable-port non-blocking shared-memory output-buffered variable length queued data switching method and apparatus wherein successive data in each of a plurality of queues of data traffic is distributed to corresponding cells of each of successive memory channels in striped fashion across a shared memory space.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: February 14, 2006
    Assignee: Axiowave Networks, Inc.
    Inventors: Xiaolin Wang, Satish Soman, Subhasis Pal
  • Patent number: 6684317
    Abstract: A sequential data packet addressing technique and system, particularly adapted for shared memory output-buffered switch fabrics and related memories, using a ring of successive subaddress generators each assigning addresses for predetermined size data byte packets received in successive time slots, and creating therefrom super packets ordered based on arrival time; and sequentially allocating memory therefor in the shared memory without overlap among the packets and with no holes between adjacent packets, and assigning addresses for the individual packets in the super packets upon the assigning of an address in the memory for each super packet.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: January 27, 2004
    Assignee: Axiowave Networks, Inc.
    Inventors: Xiaolin Wang, Satish Soman, Benjamin Marshall, Subhasis Pal
  • Publication number: 20030120894
    Abstract: A sequential data packet addressing technique and system, particularly adapted for shared memory output-buffered switch fabrics and related memories, using a ring of successive subaddress generators each assigning addresses for predetermined size data byte packets received in successive time slots, and creating therefrom super packets ordered based on arrival time; and sequentially allocating memory therefor in the shared memory without overlap among the packets and with no holes between adjacent packets, and assigning addresses for the individual packets in the super packets upon the assigning of an address in the memory for each super packet.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 26, 2003
    Applicant: Axiowave Networks, Inc.
    Inventors: Xiaolin Wang, Satish Soman, Benjamin Marshall, Subhasis Pal
  • Publication number: 20030043828
    Abstract: A novel scalable-port non-blocking shared-memory output-buffered variable length queued data switching method and apparatus.
    Type: Application
    Filed: August 28, 2001
    Publication date: March 6, 2003
    Applicant: Axiowave Networks, Inc.
    Inventors: Xiaolin Wang, Satish Soman, Subhasis Pal
  • Patent number: 6272567
    Abstract: A new data packet cell control method and apparatus, particularly, though not exclusively, for use with I/O packet cell source and destination resource networks using shared central multi-port internally cached dynamic random access memory (AMPIC DRAM), wherein a separate control path architecture is used, also incorporating AMPIC DRAM technology, to obviate problems with data traffic congestion resulting from significant I/O resource and for bandwidth requirement increases, and doing so while enabling scaling with data path, and retaining quality of service and increased multicast functionality, as well.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: August 7, 2001
    Assignee: Nexabit Networks, Inc.
    Inventors: Subhasis Pal, Rajib Ray, Zbigniew Opalka
  • Patent number: 6138219
    Abstract: A technique and system for eliminating bus contention in multi-port internally cached dynamic random access memory (AMPIC DRAM) systems, while eliminating the need for external control paths and random memory addressing, through the use of data header destination bits and a novel dedication of reduced size slot buffers to separate DRAM banks and similarly dedicated I/O data read resource ports, particularly useful for relatively short ATM message networking and the like, wherein all system I/O resources are enabled simultaneously to write complete ATM messages into a single slot buffer, and also for SONET Cross Connect and WDM messages.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: October 24, 2000
    Assignee: Nexabit Networks LLC
    Inventors: Satish S. Soman, Subhasis Pal