Qualcomm Incorporated

Uhnder, Inc.

Other

Paul Bassett

Paul Wilkinson Dent

Murtaza Ali

Curtis Matthew Davis

Raghunath Krishna Rao

Jean Pierre Bordes

Monier Maher

Marius Goldenberg

Wayne E Stark

David S Trager

Stephen William Alland

Aria Eshraghi

Manju Hegde

Otto A Schmid

Fred D Harris

Steve Borho

Srikanth Gollapudi

Nikhilesh Bhagat

Vito Giannini

Sundar Govindarajan

Jonathan Preussner

Baker Mohammad

Martin Saint-Laurent

Jentsung Lin

Ajay Anant Ingle

Hong Seok Kim

Jian Shen

Paul F Policke

Lucian Codrescu

Sujat Jamil

Suresh Kumar Venkumahanti

Muhammad Ahmed

Erich Plondke

Christopher E Koob

Boris Andreev

Prayag Bhanubhai Patel

Manojkumar Pyla

Robert Allan Lester

Lin Wang

Eai-Hsin Alfred Kuo

Masud Kamal

Kim S Hong

Bassam Jamil Mohd

Dang D Hoang

Jamil Bassam Mohd

Prayag Patel

A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system includes transmitters configured to transmit radio signals, receivers configured to receive radar signals, and a control unit. The received radio signals include transmitted radio signals transmitted by the transmitters and reflected from objects in an environment. The control unit adaptively controls the transmitters and the receivers based on a selected operating mode for the radar system. The selected operating mode meets a desired operational objective defined by current environmental conditions. The control unit is configured to control the receivers to produce and process data according to the selected operating mode.

Software defined automotive radar systems

A method for operating a radar sensing system includes configuring a transmitter to transmit a radio signal. A receiver is configured to receive radio signals. The received radio signals include the transmitted radio signal transmitted by the transmitter and reflected from objects in the environment. The method includes with advanced temporal knowledge of the codes used to modulate the transmitted radio signal, using code values of the plurality of codes, and in combination with a bank of digital finite impulse response (FIR) filters, generating complementary signals of any self-interference noise. The method further includes subtracting the complementary signals at one or more points in the receiver prior to the interference desensing the receiver. The radar sensing system further includes a frequency modulated continuous wave (FMCW) interference canceller for detecting the largest interference signals and sequentially cancelling them while signal processing the received radio signals.

Software defined automotive radar

A radar sensing system including transmit antennas and receive antennas, transmitters, receivers, and a controller. The system further includes a transmit antenna switch selectively coupling each of the transmitters to a respective transmit antenna, and a receive antenna switch selectively coupling at least one receiver of the receivers to respective receive antennas. A quantity of receivers is different from a quantity of the receive antennas. The controller is operable to select a quantity of receivers to be coupled to receive antennas to realize a desired quantity of virtual receivers. The controller is operable to select an antenna pattern as defined by the selected quantity of receivers coupled to receive antennas.

A radar system has different modes of operation. In a method for operating the radar system, at least one of one or more transmitters are configured to transmit modulated continuous-wave radio signals, while at least one of one or more receivers are configured to receive radio signals. The received radio signals include the transmitted radio signals transmitted by the one or more transmitters and reflected from objects in the environment. The method further includes selectively modifying an operational parameter of at least one of the transmitters or at least one of the receivers. The selected operational parameter is modified to meet changing operational requirements of the radar sensing system.

A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system processes the received signal to achieve different objectives depending on one or more of a selected range resolution, a selected velocity resolution, and a selected angle of arrival resolution, as defined by memory requirements and processing requirements. The system allows improved resolution of range, Doppler and/or angle depending on the memory requirements and processing requirements. The system also adapts to changing environmental conditions including interfering radio signals.

A radar system has different modes of operation. In one mode, the radar operates as a single-input, multiple output (SIMO) radar system utilizing one transmitted signal from one antenna at a time. Codes with known excellent autocorrelation properties are utilized in this mode. At each receiver the response after correlating with various possible transmitted signals is measured in order to estimate the interference that each transmitter will represent at each receiver. The estimated effect of the interference from one transmitter to a receiver that correlates with a different code is used to mitigate the interference. In another mode, the radar operates as a multi-input, multiple-output (MIMO) radar system utilizing all the antennas at a time. Interference cancellation of the nonideal cross-correlation sidelobes when transmitting in the MIMO mode are employed to remove ghost targets due to unwanted sidelobes.

A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system processes the received signal to achieve different objectives depending on one or more of a selected range resolution, a selected velocity resolution, and a selected angle of arrival resolution, as defined by memory requirements and processing requirements. The system allows improved resolution of range, Doppler and/or angle depending on the memory requirements and processing requirements.

A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system processes the received signal to achieve different objectives depending on the environment, the current information stored in the radar system, and/or external information provided to the radar system. The system allows improved resolution of range, Doppler and/or angle depending on the desired objective.

A device includes a first driver circuit coupled to a first bus line, where the first driver circuit includes a first delay element. The first delay element is configured to receive a first input signal and generate a first output signal. The first output signal transitions logic levels after a first delay period when the first input signal transitions from a logic high level to a logic low level. The first output signal transitions logic levels after a second delay period when the first input signal transitions from the logic low level to the logic high level. The first delay element includes a sense amplifier. The first driver circuit is configured to transmit the first output signal over the first bus line. The device also includes a second driver circuit configured to transmit a second output signal over a second bus line.

System and method for reducing cross coupling effects

A multi-port hybrid full-swing/low-swing memory circuit in a static random access memory (SRAM) device comprises a first wordline driver that comprises a read wordline driver, a second wordline driver that comprises either a read wordline driver or a read/write wordline driver, a memory cell coupled to the first and second wordline drivers, a sense amplifier coupled to the memory cell, and a latch coupled to the memory cell. The memory circuit is capable of achieving high-speed low-swing or low-speed full-swing operations while avoiding the need for a large circuit area on an integrated circuit.

Multi-port memory circuits

Dual-voltage domain memory buffers, and related systems and methods are disclosed. To reduce area needed for voltage level shifters for voltage level shifting, latch banks are provided in a voltage domain of memory buffer read circuitry, separate from the voltage domain of a write data input to the latch banks. A write data input voltage level shifter is disposed between the write data input and the latch banks to voltage level shift write data on the write data input to the voltage domain of the latch banks. In this manner, voltage level shifters are not required to voltage level shill the latch bank outputs, because the latch banks are in the voltage domain of the memory buffer read circuitry. In this manner, semiconductor area that would otherwise be needed for the voltage level shifters to voltage level shift latch bank outputs is not required.

Dual-voltage domain memory buffers, and related systems and methods

An apparatus includes a sense amplifier that has a sense amplifier differential output. The sense amplifier may be in a first power domain. The apparatus may include level shifting circuitry that has a level shifter differential output. The level shifting circuitry may be coupled to the sense amplifier differential output. The level shifting circuitry may include a first transistor and a second transistor. A first sense amplifier output of the sense amplifier differential output may be coupled to the first transistor, and a second sense amplifier output of the sense amplifier differential output may be coupled to the second transistor. The apparatus may further include a latch to store data. The latch may be coupled to the level shifter differential output. The latch is in a second power domain that is different from the first power domain.

Sense amplifier including a level shifter

A system is disclosed that includes a content addressable memory and an input register coupled to the content addressable memory. The input register can store a data word and the content addressable memory determines if the data word exists in the content addressable memory. The system also includes a power control circuit coupled to the content addressable memory for selectively providing power to at least a portion of the content addressable memory. The system includes power control logic coupled to the power control circuit to selectively reduce power to the at least a portion of the content addressable memory when valid data does not exist in the at least a portion of the content addressable memory.

System and method of reducing power usage of a content addressable memory

In a particular embodiment, a method includes receiving a testing activation signal at a controller coupled to a semiconductor device. The method further includes biasing a well of at least one transistor of the semiconductor device in response to the received testing activation signal. The bias is provided by a biasing circuit that is responsive to the controller. While the well is biased, a test of the semiconductor device is performed to generate testing data.

Method and apparatus for testing a memory device

The present disclosure includes a multi-threaded processor that includes a first register file associated with a first thread and a second register file associated with a second thread. At least one hardware resource is shared by the first and second register files. In addition, the first thread may have a pipeline access position that is non-sequential to the second thread. A method of accessing a plurality of register files is also disclosed. The method includes reading data from a first register file while concurrently reading data from a second register file. The first register file is associated with a first instruction stream and the second register file is associated with a second instruction stream. The first instruction stream is sequential to the second instruction stream in an execution pipeline of a processor, and the first register file is in a non-adjacent location with respect to the second register file.

Growing community of inventors

Austin, TX, United States of America

Paul Bassett