Certain aspects of the present disclosure relate to methods and apparatus for wireless communication, and more particularly, to methods and apparatus for controlling spurious emissions on devices that support millimeter wave communications. An example method includes providing a local oscillator (LO) signal generated by an LO chain to at least one of a baseband portion or a radio frequency (RF) portion coupled to the baseband portion, detecting interference in the LO signal, and controlling a gain component of the LO chain to adjust an amplitude of the LO signal, based on the detected interference.

A memory component includes a memory core comprising dynamic random access memory (DRAM) storage cells and a first circuit to receive external commands. The external commands include a read command that specifies transmitting data accessed from the memory core. The memory component also includes a second circuit to transmit data onto an external bus in response to a read command and pattern register circuitry operable during calibration to provide at least a first data pattern and a second data pattern. During the calibration, a selected one of the first data pattern and the second data pattern is transmitted by the second circuit onto the external bus in response to a read command received during the calibration. Further, at least one of the first and second data patterns is written to the pattern register circuitry in response to a write command received during the calibration.

A method is provided for sending an acknowledgement frame by a receiving entity. The method includes: subsequent to reception of a data frame sent by a sending entity and including a synchronization field containing an invariant item of information known to the entities and an identification field containing information identifying the sending entity and the receiving entity, sending an acknowledgment frame including a synchronization field; and calculating a signature of a transmission channel between the sending entity and the receiving entity, the synchronization field of the acknowledgment frame being obtained on the basis of the synchronization field of the data frame, by using the signature.

The present invention is directed to data communication. More specifically, embodiments of the present invention provide a transceiver that processes an incoming data stream and generates a recovered clock signal based on the incoming data stream. The transceiver includes a voltage gain amplifier that also performs equalization and provides a driving signal to track and hold circuits that hold the incoming data stream, which is stored by shift and holder buffer circuits. Analog to digital conversion is then performed on the buffer data by a plurality of ADC circuits. Various DSP functions are then performed over the converted data. The converted data are then encoded and transmitted in a PAM format. There are other embodiments as well.

A method for compliance testing of a Digital Interface Board attached to Automatic Test Equipment in the testing of integrated circuit semiconductor devices using Impedance Response Profiling. The includes launching alternating voltage digital clock signals from the Pin Electronics to one or more circuit paths in the Digital Interface Board, and sampling a mix of the launched alternating voltage digital clock signals and reflected signals. The method also includes compositing time domain waveforms originating at the Pin Electronics, and generating an initial reflection response profile baseline. The method is repeated at a later predetermined time, generating a later reflection response profile. The method further includes comparing the initial reflection response profile baseline with the later reflection response profile, and determining whether the one or more circuit paths of the Digital Interface Board are in compliance with predetermined operating standards.

A node can include a clock; and mapper circuitry configured to determine a timestamp from the clock, and transmit the timestamp to a second node in a Radio over Ethernet (RoE) frame with the timestamp in a control subtype and with an operational code (opcode) that designates the timestamp is in the frame. The node can also include a demapper circuit configured to receive a second timestamp from the second node in a second RoE frame, and provide the second timestamp to a Differential Clock Recovery (DCR) circuit for adjustment of the clock to a second clock at the second node.

A method for synchronizing data collected by one or more sensors of an aerial vehicle includes: generating, by a controller of the aerial vehicle, one or more time stamps each representing a clock time of the controller; sending instruction information to one or more sensors external to the aerial vehicle; receiving a plurality of data packets returned from the one or more external sensors corresponding to a number of first clock times; obtaining data collected by a built-in sensor at a number of second clock times; and analyzing, according to the data packets returned by the external sensors and the data collected by the built-in sensor, a flight state of the aerial vehicle. The instruction information carries the one or more time stamps and directs the one or more external sensors to perform data collection. Each second clock time is the same as a corresponding first clock time.

Interface devices and systems that include interface devices are disclosed. In some implementations, a device includes a transceiver configured to transmit and receive data, a lane margining controller in communication with the transceiver and configured to control the transceiver to transmit, through a margin command, to an external device, a request for requesting a state of an elastic buffer of the external device, and control the transceiver to receive the state of the elastic buffer of from the external device, and a port setting controller adjust a clock frequency range of a spread spectrum clocking scheme based on the state of the elastic buffer.

Ultra-Wideband (UWB) technology exploits modulated coded impulses over a wide frequency spectrum with very low power over a short distance for digital data transmission. Today's leading edge modulated sinusoidal wave wireless communication standards and systems achieve power efficiencies of 50 nJ/bit employing narrowband signaling schemes and traditional RF transceiver architectures. However, such designs severely limit the achievable energy efficiency, especially at lower data rates such as below 1 Mbps. Further, it is important that peak power consumption is supportable by common battery or energy harvesting technologies and long term power consumption neither leads to limited battery lifetimes or an inability for alternate energy sources to sustain them. Accordingly, it would be beneficial for next generation applications to exploit inventive transceiver structures and communication schemes in order to achieve the sub nJ per bit energy efficiencies required by next generation applications.

A receiving apparatus is provided, including: a receiving unit to receive a plurality of pulses including a synchronization pulse and a data pulse having a data pulse width corresponding to a data value; a searching unit to search for pulse information indicating a pulse period or the like that falls within a synchronization pulse acceptable range from among pulse information indicating pulse periods or pulse widths of the respective pulses; a detecting unit to detect whether pulse information of a second pulse at a predetermined location relative to a first pulse corresponding to the searched pulse information indicates a pulse period or the like that falls within a data pulse acceptable range; an identifying unit to identify the first pulse as the synchronization pulse on condition that the pulse information of the second pulse indicates a pulse period or the like that falls within the data pulse acceptable range.