Uhnder, Inc.

St-ericsson Sa

Silicon Laboratories Inc.

Nxp B.v.

Other

Robert Boschgmbh

Yotta Networks, Inc.

Frederick Rush

Monier Maher

Curtis Matthew Davis

Phillip Matthews

Murtaza Ali

G Diwakar Vishakhadatta

Raghunath Krishna Rao

Jean Pierre Bordes

Wayne E Stark

Steve Borho

Srikanth Gollapudi

Richard T Behrens

Marius Goldenberg

Aria Eshraghi

Otto A Schmid

Fred D Harris

Chung-Kai Chow

Satish S Kulkarni

Michael R May

Alessandro Piovaccari

Ramin Khoini-Poorfard

Peter Vancorenland

Lakshman S Tamil

Lionel Cimaz

Bing Li

Xue-Mei Gong

David F Wolf

Alan F Hendrickson

Mitchell Reid

Shaojie Chen

Lee Dobson McFearin

Pascal Blouin

David Le Goff

Scott A Rothrock

Chunyu Xin

Wasim Quddus

Gopalakrishnan Hari

Henry William Singor

Qi Cai

Jing Liang

Alexander A Smith

Earl Ponceti

Justin Hunt

Mitch Entezari

Gannavaram Diwakar Vishakhadatta

Glen Collier

Allesandro Fabbri

Quan Jiang

Joseph M McQuade

Jean-Marc Guyot

A multi-chip MIMO radar system includes a plurality of transmitters and a plurality of receivers. Each of the pluralities of transmitters and receivers are arranged across a plurality of chips. The multi-chip MIMO radar system is configured to provide an exemplary chip synchronization such that the transmitters and receivers of each chip of the radar system are synchronized with the transmitters and receivers of every other chip of the radar system.

Multi-chip synchronization for digital radars

A radar system operated in a variable power mode includes transmitters, receivers, and a controller. The transmitters transmit digitally modulated signals. The receivers receive radio signals that include transmitted radio signals from the transmitter and reflected from objects in the environment. In addition, an interfering radar signal from a different radar system is received that has been linearly frequency modulated. Each receiver includes a linear frequency modulation canceler that includes a FIR filter, and is configured as a 1-step linear predictor with least mean squares adaptation to attempt to cancel the interfering signal. The prediction is subtracted from the FIR input signal that drives the adaptation and also comprises the canceler output. The controller is configured to control the adaptation on a first receiver. The controller delays the adaptation such that transients at the start of each receive pulse are avoided.

Frequency modulated signal cancellation in variable power mode for radar applications

A radar sensing system includes a plurality of transmitters configured to transmit radio signals and a plurality of receivers configured to receive radio signals. First and second transmitters of the plurality of transmitters are configured to generate radio signals defined by first and second spreading code chip sequences, respectively. A first receiver of the plurality of receivers processes received radio signals as defined by a plurality of spreading code chip sequences that includes at least the first and second spreading code chip sequences. The radar sensing system also includes a code generator for generating the spreading code chip sequences.

Programmable code generation for radar sensing systems

A radar sensing system includes a transmitter and a receiver. The transmitter is configured to transmit a radio signal. The receiver is configured to receive radio signals that include the transmitted radio signal reflected from objects in the environment. The transmitter and receiver are configured to distribute the signal power over frequency so that it is separated from noise and impairments at DC and low frequencies as may be caused by some radar system components which introduce DC offsets and/or low frequency (e.g. flicker) noise.

Method and apparatus for mitigation of low frequency noise in radar systems

A radar system includes transmitters and receivers configured for installation and use in a vehicle. The transmitters transmit radio signals. The receivers receive radio signals that include the transmitted radio signals reflected from objects in an environment. Each receiver has a controller, a buffer, and a post-buffer processor. The receiver processes the received radio signals and stored data samples in the buffer. The buffer operates in a plurality of modes defined by the controller. Two or more modes of operation of the plurality of modes are performed with a same set of data samples stored in the buffer. The post-buffer processor receives data samples from the buffer and performs at least one of correlation processing to determine object ranges, Doppler processing to determine object velocity, and, in combination with other receivers of the plurality of receivers, further processing to determine angular locations of the objects.

Radar data buffering

A radar sensing system for a vehicle has multiple transmitters and receivers on a vehicle. The transmitters are configured to transmit radio signals which are reflected off of objects in the environment. There are one or more receivers that receive the reflected radio signals. Each receiver has an antenna, a radio frequency front end, an analog-to-digital converter (ADC), and a digital signal processor. The transmitted signals are based on spreading codes generated by a programmable code generation unit. The receiver also makes use of the spreading codes generated by the programmable code generation unit. The programmable code generation unit is configured to selectively generate particular spreading codes that have desired properties.

A radar system includes transmitters and receivers configured for installation and use in a vehicle. The transmitters transmit radio signals. The receivers receive radio signals that include the transmitted radio signals reflected from objects in an environment. Each receiver has an RF front end, an analog-to-digital converter (ADC), a digital signal processor, and a controller. The digital signal processor processes the data from the ADC and stores data samples in a buffer. The buffer operates in several modes defined by the controller. These modes include replay mode, loopback mode, quiet mode, and throttle mode. By controlling the buffer, the same received samples can be processed in multiple ways to generate information on targets at different ranges and velocities. The buffer is read out and the data is processed further to enable the radar system to determine range, velocity, and angle of targets in the environment.

An integrated circuit includes a tuner, a digital television (DTV) demodulator, an analog television (ATV) demodulator, and a controller. The tuner includes an input for receiving a radio frequency (RF) signal including at least one of an analog television signal and digital television signal, and including a first output terminal and a second output terminal. The DTV demodulator includes a DTV input coupled to the first output terminal of the tuner and includes a DTV output terminal. The ATV demodulator includes an ATV input coupled to the second output terminal of the tuner and includes an ATV output terminal. The controller is coupled to the tuner, the DTV demodulator, and the ATV demodulator to configure the tuner and at least one of the DTV demodulator and the ATV demodulator for receiving television content in a selected television format.

Receiver and method of receiving analog and digital television signals

Apparatus and methods for scanning a keypad of a communications device in a manner that tends to minimize interference with transceiver operation, such as a RF transceiver. In one embodiment, a controller receives a periodic signal of the communications device and provides a scan signal to cause the keypad to be scanned. In a sleep mode a keypad scan is performed only subsequent to a keypad activation. However, if the communications device is in use a keypad scan is performed once per frame at predetermined intervals, in one embodiment.

Keypad scanning with radio event isolation

A communication apparatus includes a radio frequency circuit that operates on a radio frequency signal and a digital processing circuit coupled to the radio frequency circuit. The digital processing circuit includes a plurality of bus masters coupled to a shared bus. A bus arbiter is provided for arbitrating between requests to access the bus by a first bus master and one or more other bus masters. Accesses by the one or more other bus masters to the bus are restricted in response to a signal indicative of a change in a mode of operation of the RF circuit. In one particular implementation, a communication apparatus employs time domain isolation wherein the digital processing circuit may be placed in a shutdown mode when the radio frequency circuit is active.

Communication apparatus implementing time domain isolation with restricted bus access

A method of operating a radio-frequency (RF) circuitry and a signal-processing circuitry in a mobile telephone apparatus includes at least partially disabling the signal-processing circuitry while transmitting or receiving signals. In one example, a processor is efficiently disabled by generating and servicing an interrupt of relatively high priority. One advantage of this example is that preexisting, legacy code can be maintained, while still achieving the desired objectives. The processor can be enabled by generating and servicing a second high priority interrupt.

Apparatus using interrupts for controlling a processor for radio isolation and associated method

A system includes a communication apparatus coupled to a test subsystem through a converter. The test subsystem may be configured to initiate an audio test of the communication apparatus and receive in response a set of audio test data at a predetermined constant data rate. The communication apparatus may be configured to enable output of audio test data during inactive periods of operation of an RF circuit of the communication apparatus and to disable output of audio test data during active periods of operation of the RF circuit. The converter may be configured to receive the set of audio test data from the communication apparatus and provide the set of audio test data to the test subsystem at the predetermined constant data rate during the active and the inactive periods of operation of the RF circuit.

System including a communication apparatus having a digital audio interface for audio testing with radio isolation

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Austin, TX, United States of America

Frederick Rush