Patents by Inventor Arun Babu PALLERLA

Arun Babu PALLERLA 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).

  • Patent number: 11854609
    Abstract: A memory is provided that includes multiple memory banks, each one of the memory banks being associated with a read multiplexer. A first read multiplexer couples a first plurality of bit lines to a first sense node pair, and a second read multiplexer couples a second plurality of bit lines to a second sense node pair. A first sense amplifier is coupled to the first sense node pair. The second sense node pair may be coupled to the same sense amplifier or a different sense amplifier.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: December 26, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Arun Babu Pallerla, Anil Chowdary Kota, Hochul Lee
  • Publication number: 20230307020
    Abstract: A memory is provided with a clock circuit configured to simultaneously assert a write multiplexer clock signal and a read multiplexer clock signal during a scan mode of operation. In the scan mode of operation, a scan in signal routes through a write multiplexer to a first bit line while the write multiplexer clock signal is asserted. Similarly, the scan in signal routes from the first bit line through a read multiplexer while the read multiplexer clock signal is asserted.
    Type: Application
    Filed: March 23, 2022
    Publication date: September 28, 2023
    Inventors: Arun Babu PALLERLA, Anil Chowdary KOTA, Changho JUNG
  • Patent number: 11763866
    Abstract: A memory is provided with a clock circuit configured to simultaneously assert a write multiplexer clock signal and a read multiplexer clock signal during a scan mode of operation. In the scan mode of operation, a scan in signal routes through a write multiplexer to a first bit line while the write multiplexer clock signal is asserted. Similarly, the scan in signal routes from the first bit line through a read multiplexer while the read multiplexer clock signal is asserted.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: September 19, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Arun Babu Pallerla, Anil Chowdary Kota, Changho Jung
  • Publication number: 20230223075
    Abstract: A pseudo-triple-port memory is provided with read datapaths and write datapaths. The pseudo-triple-port memory includes a plurality of pseudo-triple-port bitcells, each pseudo-triple-port first bitcell having a first read port coupled to a first bit line, a second read port coupled to a second bit line, and a write port coupled to the first bit line and to the second bit line.
    Type: Application
    Filed: February 27, 2023
    Publication date: July 13, 2023
    Inventors: Changho JUNG, Arun Babu PALLERLA, Chulmin JUNG
  • Patent number: 11670351
    Abstract: Various implementations provide systems and methods for reading data from memory bit cells. An example implementation includes a read circuit that provides a single-ended output from a sensing stage. The single-ended output is received by a reset-set (RS) latch, which also receives a virtual bit line signal. The single-ended output and the virtual bit line signal provide complementary inputs to the RS latch, and the RS latch stores a sensed bit, and the sensed bit may be driven onto a data bus.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: June 6, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Arun Babu Pallerla, Anil Chowdary Kota, Changho Jung, Chulmin Jung
  • Publication number: 20230170000
    Abstract: Various implementations provide systems and methods for reading data from memory bit cells. An example implementation includes a read circuit that provides a single-ended output from a sensing stage. The single-ended output is received by a reset-set (RS) latch, which also receives a virtual bit line signal. The single-ended output and the virtual bit line signal provide complementary inputs to the RS latch, and the RS latch stores a sensed bit, and the sensed bit may be driven onto a data bus.
    Type: Application
    Filed: November 29, 2021
    Publication date: June 1, 2023
    Inventors: Arun Babu PALLERLA, Anil Chowdary KOTA, Changho JUNG, Chulmin JUNG
  • Patent number: 11640838
    Abstract: A memory is provided that is configured to practice two different modes of read operation, such as both a normal read operation and a burst-mode read operation. In one example, the memory is a pseudo-dual-port memory. The memory may include an address comparator to perform a time-division multiplexing to first compare a read address to a stored address and then to compare a write address to the stored address.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: May 2, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Arun Babu Pallerla, Changho Jung, Chulmin Jung
  • Publication number: 20230093852
    Abstract: A memory is provided that is configured to practice two different modes of read operation, such as both a normal read operation and a burst-mode read operation. In one example, the memory is a pseudo-dual-port memory. The memory may include an address comparator to perform a time-division multiplexing to first compare a read address to a stored address and then to compare a write address to the stored address.
    Type: Application
    Filed: September 24, 2021
    Publication date: March 30, 2023
    Inventors: Arun Babu PALLERLA, Changho JUNG, Chulmin JUNG
  • Patent number: 11615837
    Abstract: A pseudo-triple-port memory is provided with read datapaths and write datapaths. The pseudo-triple-port memory includes a plurality of pseudo-triple-port bitcells, each pseudo-triple-port first bitcell having a first read port coupled to a first bit line, a second read port coupled to a second bit line, and a write port coupled to the first bit line and to the second bit line.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: March 28, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Changho Jung, Arun Babu Pallerla, Chulmin Jung
  • Publication number: 20230066241
    Abstract: A memory is provided that includes multiple memory banks, each one of the memory banks being associated with a read multiplexer. A first read multiplexer couples a first plurality of bit lines to a first sense node pair, and a second read multiplexer couples a second plurality of bit lines to a second sense node pair. A first sense amplifier is coupled to the first sense node pair. The second sense node pair may be coupled to the same sense amplifier or a different sense amplifier.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 2, 2023
    Inventors: Arun Babu PALLERLA, Anil Chowdary KOTA, Hochul LEE
  • Patent number: 11462263
    Abstract: A memory is provided that is configured to practice both a normal read operation and also a burst mode read operation. A column multiplexer selects from a plurality of columns using a pair of pass transistor for each column. The column multiplexer drives a true input node and a complement input node of an output data latch.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: October 4, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Changho Jung, Arun Babu Pallerla, Chulmin Jung
  • Patent number: 11437091
    Abstract: A charge-transfer transistor couples between a bit line and a sense node for a sense amplifier. During a read operation, a charge-transfer driver drives a gate voltage of the charge-transfer transistor to control whether the charge-transfer transistor conducts during a charge-transfer period. To assist the charge-transfer by the charge-transfer transistor, a first and second cross-coupled transistor are coupled between the bit line and a complement bit line.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: September 6, 2022
    Assignee: QUALCOMM INCORPORATED
    Inventors: Changho Jung, Percy Dadabhoy, Arun Babu Pallerla
  • Patent number: 11398274
    Abstract: A pseudo-triple-port memory is provided that includes a plurality of pseudo-triple-port bitcells, each pseudo-triple-port first bitcell having a first read port including a first word line coupled to a first bit line through a first access transistor, a second read port including a second word line coupled to a second bit line through a second access transistor, and a write port including both the word lines, both the bit lines, and the pair of access transistors.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: July 26, 2022
    Assignee: QUALCOMM INCORPORATED
    Inventors: Arun Babu Pallerla, Changho Jung, Sung Son
  • Publication number: 20220199152
    Abstract: A memory is provided that is configured to practice both a normal read operation and also a burst mode read operation. A column multiplexer selects from a plurality of columns using a pair of pass transistor for each column. The column multiplexer drives a true input node and a complement input node of an output data latch.
    Type: Application
    Filed: December 22, 2020
    Publication date: June 23, 2022
    Inventors: Changho JUNG, Arun Babu PALLERLA, Chulmin JUNG
  • Patent number: 11361817
    Abstract: A bitcell architecture for a pseudo-triple-port memory is provided that includes a a bitcell arranged on a semiconductor substrate, the bitcell defining a bitcell width and a bitcell height and including a first access transistor and a second access transistor. A first metal layer adjacent the semiconductor substrate is patterned to form a pair of local bit lines arranged within the bitcell width. The pair of local bit lines includes a local bit line coupled to a terminal of the first access transistor and includes a complement local bit line coupled to a terminal of the second access transistor.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: June 14, 2022
    Assignee: QUALCOMM INCORPORATED
    Inventors: Arun Babu Pallerla, Changho Jung, Sung Son, Jason Cheng, Yandong Gao, Chulmin Jung, Venugopal Boynapalli
  • Patent number: 11302388
    Abstract: A word line decoder for pseudo-triple-port memory is provided that includes a first logic gate for decoding a word line address to a first word line in a word line pair and a first word line clock signal. The decoder further includes a second logic gate for decoding a word line address to a second word line in the word line pair and a second word line clock signal.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: April 12, 2022
    Assignee: QUALCOMM INCORPORATED
    Inventors: Arun Babu Pallerla, Changho Jung
  • Publication number: 20220093171
    Abstract: A pseudo-triple-port memory is provided with read datapaths and write datapaths. The pseudo-triple-port memory includes a plurality of pseudo-triple-port bitcells, each pseudo-triple-port first bitcell having a first read port coupled to a first bit line, a second read port coupled to a second bit line, and a write port coupled to the first bit line and to the second bit line.
    Type: Application
    Filed: September 22, 2020
    Publication date: March 24, 2022
    Inventors: Changho JUNG, Arun Babu PALLERLA, Chulmin JUNG
  • Patent number: 11270762
    Abstract: A memory is provided that is configured to practice both a normal read operation and also a burst mode read operation. A burst mode address comparator compares a current row address to a preceding row address from a preceding read operation to determine whether a read operation is a normal read operation or a burst mode read operation. The burst mode address comparator invokes the burst mode despite the presence of an intervening write operation to a row address not equal to the preceding row address.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: March 8, 2022
    Assignee: Qualcomm Incorporated
    Inventors: Changho Jung, Arun Babu Pallerla, Percy Dadabhoy
  • Publication number: 20220068370
    Abstract: A memory is provided that is configured to practice both a normal read operation and also a burst mode read operation. A burst mode address comparator compares a current row address to a preceding row address from a preceding read operation to determine whether a read operation is a normal read operation or a burst mode read operation. The burst mode address comparator invokes the burst mode despite the presence of an intervening write operation to a row address not equal to the preceding row address.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 3, 2022
    Inventors: Changho JUNG, Arun Babu PALLERLA, Percy DADABHOY
  • Publication number: 20220068369
    Abstract: A word line decoder for pseudo-triple-port memory is provided that includes a first logic gate for decoding a word line address to a first word line in a word line pair and a first word line clock signal. The decoder further includes a second logic gate for decoding a word line address to a second word line in the word line pair and a second word line clock signal.
    Type: Application
    Filed: August 25, 2020
    Publication date: March 3, 2022
    Inventors: Arun Babu PALLERLA, Changho JUNG