A control method applied to an Operating-Mode Finite-State-Machine (OPFSM) arranged for deciding a behavior of a first port of an apparatus includes: controlling the OPFSM to enter a second local state from a first local state and controlling the first port to send a signal with a wakeup pattern to a link partner of the first port when the state of the OPFSM is the first local state, and a wakeup request bit is a first local value.

The invention relates to a network communication system (50), in particular for a vehicle, having a communication bus (56), a first communication device (52) and a plurality of second communication devices (54) which are connected to one another via the communication bus (56), wherein the first communication device (52) comprises a bias voltage source (64) for generating a constant bias voltage on the communication bus (56), the first communication device (52) comprises a current measurement apparatus (66) for capturing the current on the communication bus (56), the network communication system (50) has a terminating resistor (60) which is arranged in parallel with the plurality of second communication devices (54), the first communication device (52) comprises a first modulation apparatus (72) for modulating a current set by the bias voltage and the terminating resistor (60) on the communication bus (56), each second communication device (54) comprises a second modulation apparatus (78) for modulating the current set by the bias voltage and the terminating resistor (60), and each second communication device (54) has a second voltage measurement apparatus (80) for capturing a voltage at the terminating resistor (60). The invention also relates to a corresponding method for communication in a network communication system (50).

A device for a serial bus system. The device includes a receiver for receiving a signal from a bus, in which for a message that is exchanged between user stations of the bus system, the bus states of a signal received from the bus in the first communication phase differ from bus states of the signal received in the second communication phase. The receiver generates a digital signal based on the received signal, and outputs the signal to a communication control device to evaluate the data. The receiver uses a first reception threshold and a second reception threshold in the second communication phase to generate the digital signal. The second reception threshold has a negative voltage value or has a voltage value that is greater than the largest voltage value that is driven by a user station of the bus system for a bus state in the second communication phase.

An emission reduction device for a CAN bus system. The device includes an evaluation block for evaluating signals that are transferred differentially on two bus lines, the evaluation block being designed to form the sum voltage of the differentially transferred signals, and a comparison block for comparing the sum voltage in such a way that the difference between the sum voltage for a dominant bus state and the sum voltage for a recessive bus state has a predetermined minimum value, the recessive bus state being overwritable by a dominant bus state. For the comparison, the comparison block is designed to modify at least one property of the transceiver device via a setting in a block of the transceiver device until the difference between the sum voltage for a dominant bus state and the sum voltage for a recessive bus state has the predetermined minimum value.

A LIN receiver includes a single, low power structure for both sleep and silent modes, with a single comparator for detecting LIN signaling during both sleep and silent modes as well as during active mode. In some embodiments, full receiving capability is implemented with a current as low as 5 microamps. In particular, dominant and recessive levels for the wakeup bloc are identical to those of standard LIN levels, fixed at about 3.5 V. Consequently, full LIN receiving capability is available during sleep mode.

Exemplary aspects are directed to transceivers interlinked in a communication system, for example, in respective circuit-based nodes installed in battery-operated vehicle or other apparatus. Representative of the communication system are a first transceiver and a second transceiver which communicate with one another over a communication link, with the first transceiver initiating a request over the link to the second transceiver. The second transceiver may receive the request and, for a period of time in response to receiving to the request, monitor the link to detect whether any further signaling on the link by the first transceiver indicates to accept the request. In certain other more specific examples, the above aspects are used as part of a handshake protocol to mitigate delays and related issues in coordinating timely actions associated with the request.

A device comprising a processor, an energy source, one or more sensors, a wireless transceiver and a memory. The memory may comprise instructions for selecting one of a plurality of modes of operation. The modes of operation may comprise (i) a low-power mode in which the device consumes less than a pre-determined or an adaptively-determined amount of power and the device has less than full functionality and (ii) a high-power mode in which the device consumes more than the pre-determined or the adaptively-determined amount of power and the device has more functionality than in the low-power mode. The instructions for selecting one of the modes of operation may comprise (i) instructions for conserving power by transitioning from the high-power mode to the low-power mode and (ii) instructions for activating the wireless transceiver to transmit a message with information from the sensors to a remote device.

In one form of the present disclosure, vehicle includes: a plurality of electronic devices; a first communication device configured to communicate with a terminal using a first communication method; a second communication device configured to communicate with the terminal using a second communication method; and a control device configured to wake up the plurality of electronic devices when the first communication device wakes up, switch the plurality of electronic devices to a sleep mode when the first communication device is switched to the sleep mode, and selectively control the wake up and the sleep modes of the second communication device based on a message received from the terminal.

A method for managing communication on a network between a first device and a second device. The devices communicate via a first communication link, called a main link, and a second communication link, called a secondary link. The energy consumption of the secondary link is less than that of the first communication link. The method includes establishing validity of a criterion relative to data traffic on at least one of the main or secondary link, and on the basis of the validity of the criterion, managing activation of the at least one link.

A vehicle module for a vehicle includes one or more sensors, which are configured to record sensor data in an operating mode of the vehicle module, and are configured to adopt a plurality of discrete states in an energy saving mode in order to provide a basic function of the vehicle module in the energy saving mode of the vehicle module. The vehicle module further has an interface for a data line to transmit the sensor data to a control device of the vehicle. In addition, the vehicle module has an energy saving mode switch which is configured to connect the one or more sensors in the energy saving mode to the interface for the data line in such a way that information regarding a state of the plurality of discrete states can be transmitted to the control device via the data line.