NXP Semiconductors Patente

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Disclosed is a method and IC, comprising: a p-type substrate layer (410), an ESD protection device (420), and a further region (430); wherein the ESD protection device comprises: a n-well region (422) having therein a n+ contact region (424) and a p+ anode contact region (426), and a trigger device (428) connected between the n+ contact region and a further p+ contact region (446) outside of the n-well, wherein the trigger device is operable, in response to an ESD event trigger, to provide a low-resistance path between the anode contact region and the further p+ contact region; wherein the further region comprises a further n-well (432), spaced apart from the ESD protection device lower-doped n-well region (422); and wherein the further n-well is operable as a cathode of an SCR comprising the anode, and the ESD protection device n-well and the p-doped substrate layer as a n- and p-intermediate nodes.

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A Controller Area Network (CAN) transceiver determines a voltage differential signal from analog signaling and provides a digital output signal at a receiver output to a CAN controller based on the voltage differential signal. The analog signaling received from the CAN bus can operate with a first voltage level scheme of a first CAN protocol and a second voltage level scheme for a second CAN protocol. A first comparator compares the voltage differential signal to a first threshold which is set to a value which differentiates between a logic low bit and logic high bit in accordance with the second CAN protocol. Filtering circuitry selectively filters an output of the first comparator based on detection of noise on the CAN bus to provide a first digital signal indicative of activity on the CAN bus according to the second CAN protocol.

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The disclosure relates to a radar system having multiple radar transceiver modules, in which each module has a clock signal that is synchronised with a clock signal generated by a leader transceiver module. Example embodiments include a radar system (400) comprising a plurality of radar transceiver modules (401, 402) mounted to a common PCB (404), the plurality of radar transceiver modules comprising a leader module (401) and one or more follower modules (402), the leader module (401) comprising a first oscillator (403) configured to provide a first clock signal at a first frequency to each follower module (402), each of the leader and follower modules comprising a phase locked loop, PLL, clock signal generator (300), the PLL clock signal generator (300) comprising a divide by n clock divider (304) arranged to output 2n phase shifted clock signals (314) at a third frequency and a multiplexer (306) connected to receive the 2n phase shifted clock signals from the divide by n clock divider (304) and output a third clock signal (308) selected by an input phase select signal (307).

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In accordance with a first aspect of the present disclosure, a communication system is provided, comprising: a plurality of communication nodes which are operatively coupled to each other, wherein each of said communication nodes comprises a first radio frequency (RF) communication unit configured to perform ranging sessions with an external communication device; a controller configured to create a logical subset of said communication nodes based on an indication of a channel quality between the communication nodes and the external communication device, wherein said indication of the channel quality has been obtained using a second RF communication unit comprised in each of said communication nodes; the controller further being configured to cause that only the communication nodes included in said logical subset perform said ranging sessions with the external communication device. In accordance with a second aspect of the present disclosure, a corresponding method of operating a communication system is conceived. In accordance with a third aspect of the present disclosure, a computer program is provided for carrying out said method.

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A method for transmitting a message onto a time-sensitive network. The method comprises: receiving messages on a plurality of different channels; determining a time required to transmit a first received message from a first channel, frameTime, onto the network. If frameTime is greater than a predetermined maximum time period permitted for transmission of a single message within the network, maxInterferenceTime; then separating the first message into two or more sub-messages; determining a time required to transmit each sub-message onto the network. If the time required to transmit each respective sub-message is less than or equal to maxInterferenceTime, then sequentially transmitting each sub-message onto the network in turn such that a second message from a second channel can be transmitted between sub-messages if required.

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In accordance with a first aspect of the present disclosure, a radar system is provided, comprising: a plurality of receive channels; a first radar detector stage configured to detect, through said receive channels, at least one target using a detector threshold; a noise correlation determination unit configured to determine a noise correlation level indicative of noise correlation between the receive channels if the first radar detector stage has detected the target; a detector threshold adjustment unit configured to adjust the detector threshold in dependence on the noise correlation level determined by the noise correlation determination unit; a second radar detector stage configured to detect the target using the adjusted detector threshold. In accordance with a second aspect of the present disclosure, a corresponding method of operating a radar system is conceived.

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