A method and an apparatus for transmitting a wakeup packet in a wireless LAN system are proposed. Specifically, a transmitter generates a wakeup packet by applying an OOK scheme. The transmitter transmits the wakeup packet to a receiver via an 80 MHz channel. The 80 MHz channel includes first to fourth subchannels. If some of the first to fourth subchannels are busy or there are no pending wakeup packets for the receiver in some of the subchannels, some of the subchannels are punctured. The wakeup packet is transmitted via the remaining subchannels of the first to fourth subchannels. Each of the first to fourth subchannels is a 20 MHz channel.

A method of encoding input data includes identifying an input packet of the input data, the input packet including a plurality of input words, each of the input words including pre bits, groupID bits, and post bits, organizing the plurality of input words into a plurality of groups based on groupID bits of the plurality of input words, identifying a key group of the plurality of groups based on a number of input words in each of the plurality of groups, determining a key value based on the pre bits, the groupID bits, and the post bits of one of the plurality of input words corresponding to the key group, and generating a plurality of coded words based on the key value and the plurality of input words.

A method of encoding input data includes identifying an input packet of the input data, the input packet including a plurality of input words, each of the input words including pre bits, groupID bits, and post bits, organizing the plurality of input words into a plurality of groups based on groupID bits of the plurality of input words, identifying a key group of the plurality of groups based on a number of input words in each of the plurality of groups, determining a key value based on the pre bits, the groupID bits, and the post bits of one of the plurality of input words corresponding to the key group, and generating a plurality of coded words based on the key value and the plurality of input words.

Generating, during a first and second signaling interval, an aggregated data signal by forming a linear combination of wire signals received in parallel from wires of a multi-wire bus, wherein at least some of the wire signals undergo a signal level transition during the first and second signaling interval; measuring a signal skew characteristic of the aggregated data signal; and, generating wire-specific skew offset metrics, each wire-specific skew offset metric based on the signal skew characteristic.

A method of encoding input data includes identifying an input packet of the input data, the input packet including a plurality of input words, each of the input words including pre bits, groupID bits, and post bits, organizing the plurality of input words into a plurality of groups based on groupID bits of the plurality of input words, identifying a key group of the plurality of groups based on a number of input words in each of the plurality of groups, determining a key value based on the pre bits, the groupID bits, and the post bits of one of the plurality of input words corresponding to the key group, and generating a plurality of coded words based on the key value and the plurality of input words.

A retiming circuit module, a signal transmission system, and a signal transmission method are provided. The retiming circuit module includes a path control circuit and a multipath signal transmission circuit. The multipath signal transmission circuit includes built-in first signal transmission path and second signal transmission path. The multipath signal transmission circuit may perform first signal transmission between an upstream device and a downstream device based on a first signal transmission frequency and the second signal transmission path. During a period of performing the first signal transmission, the path control circuit may detect a first data sequence transmitted between the upstream device and the downstream device. The path control circuit may control the multipath signal transmission circuit to switch to perform second signal transmission between the upstream device and the downstream device based on the first signal transmission frequency and the first signal transmission path according to the first data sequence.

A system and method for recovering encoded data from a modulated baseband signal is disclosed. Aspects and embodiments of the system and method include receiving an analog input signal representing a modulated baseband signal, counting clock cycles of a reference clock, detecting a first transition and a second transition of the analog input signal indicating a first change and a second change in the modulated baseband signal, storing a first counter value corresponding to an amount of clock cycles elapsed between the first transition and the second transition, and determining a binary-valued bit sequence corresponding to the first counter value.

An optical transceiver is configured to receive an optical signal on which a monitoring signal encoded by Manchester encoding is superimposed. The optical transceiver includes a decoding circuit configured to decode the monitoring signal from an electrical signal generated from the optical signal. The decoding circuit includes an interval measuring unit and a decoding unit. The interval measuring unit is configured to detect only a rising edge or a falling edge of a waveform of the electrical signal, to measure a first time interval between a detected first edge and a second edge detected immediately after detecting the first edge, and to measure a second time interval between the second edge and a third edge detected immediately after detecting the second edge. The decoding unit is configured to decode the monitoring signal encoded by the Manchester encoding based on a ratio between the first and second time intervals.

An electronic device receives wireless signals encoded with data in an amplitude-shift keying format. The electronic device passes the wireless signals through a low-pass filter. The low-pass filter has a cutoff frequency between a first frequency associated with data values of a first type and a second frequency associated with data values of a second type. The low-pass filter has the effect of changing the wireless signal from the amplitude-shift keying format to an on-off keying format without losing the data. The electronic device decodes the data from the wireless signal in the on-off keying format.

A battery monitoring system that monitors states of a plurality of batteries. The battery monitoring system includes a battery monitoring ECU and a plurality of battery monitoring devices. The battery monitoring ECU and the plurality of battery monitoring devices are connected to each other in any connection form of ring connection, daisy chain connection, or multi-drop connection.