Atmel Corporation

Advanced Micro Devices Corporation

Atmel Automotive Gmbh

Amtel Corporation

Atmel Germany Gmbh

Tilo Ferchland

Eric Sachse

Frank Poegel

Wolfram Kluge

Michael Schmidt

Sascha Beyer

Thomas Hanusch

Rolf Jaehne

Udo Walter

Dietmar Eggert

Jeannette Zarbock

Thorsten Riedel

Soeren Schneider

Menno Mennenga

Uwe Eckhardt

Ralf Flemming

Jörg Borowski

Matthias Vorwerk

Attila Roemer

Christian Wiencke

Fred Fierling

Jeanette Zarbock

Katja Schwieger

Joerg Wunsch

Leslie J Mulder

A circuit of a node in a radio network and method for transit time measurement between a first node and a second node of a radio network is provided. A frame is transmitted by the first node, wherein the frame requires an acknowledgment of reception by the second node. A first point in time of the transmission of the frame is established by the first node by a time counter. The frame is received by the second node at a second point in time. The acknowledgment is transmitted by the second node to the first node at a third point in time, wherein the third point in time depends on the second point in time by a predetermined time interval between the second point in time and the third point in time. A fourth point in time is established by the first node by the time counter when the acknowledgment is received. The transit time or the change in transit time is determined from the first point in time established by the time counter and from the established fourth point in time and from the predetermined time interval.

Circuit of a node and method for transit time measurement in a radio network

A first node of a radio network initiates a mode for finding the range to a second node. The first node transmits to the second node, with the address of the second node, a range finding command, which switches the second node into the range finding mode and controls a sequence. The first node transmits in a transmission time window a first signal, which is received by the second node in an associated reception time window, a first phase value of the first signal being measured. The second node transmits in a transmission time window a second signal, which is received by the first node in an associated reception time window, a second phase value of the second signal being measured. The first frequency is changed by a frequency difference and the second frequency is changed by the frequency difference in a subsequent time window of the sequence.

Circuit, system and method for communication between two nodes of a radio network

In one embodiment, setting, by a first node, a settable data rate for a first part of a data frame, the data frame also having a second part having a defined second data rate, and transmitting, by the node, the first part at the set data rate and the second part at the second data rate, the first part including at least a portion of a payload of the data frame and the second part including an identifier based on the set data rate.

Transmitting data between nodes of a wireless network

A circuit and a method for operating a node in a radio network, whereby nodes of the same radio network have a common network ID and each node individually is assigned a node ID, wherein during the reception of a current packet by a receiving circuit of the node, an address contained in the packet is determined, wherein reception of the current packet is continued when the determined address agrees with the network ID of the node and the node ID of the node, and wherein during reception of the current packet, the reception of the current packet is terminated and the receiving circuit is controlled based on a case decision, when the determined address does not agree with the network ID of the node or the node ID of the node.

Circuit and method for operating a node in a radio network

A receiving circuit, method for receiving a signal, and use of a detection circuit and a control circuit of a receiving circuit of a node of a radio network is provided to deactivate an analog signal processing and/or determination of digital data from a signal received over an antenna of the node, when a stored current frame of the digital data has been recognized as valid, and to activate the analog signal processing and/or the determination, when the transmission of the current frame over an interface of the control circuit has been confirmed, whereby the control circuit is connected to the detection circuit and/or an input circuit for deactivation and activation, and whereby the detection circuit is formed to determine the digital data from the received signal.

Receiving circuit, method for receiving a signal, and use of a detection circuit and a control circuit

In one embodiment, a method includes receiving a radio frequency (RF) signal; synchronizing the received RF signal with a preamble to determine a time base; determining a first energy value of the received RF signal by averaging received signal strength indication (RSSI) values of the received RF signal over a first period of time; determining a second energy value of the received RF signal over a second period of time; determining a difference value between the first energy value and the second energy value; comparing the difference value with a predetermined energy threshold value; determining a quality value of the received RF signal; comparing the quality value of the received RF signal with a predetermined quality threshold value; and, if the difference value exceeds the predetermined energy threshold value or the quality value is below the predetermined quality threshold value, then erasing the time base.

Receiver and method for the reception of a node by a receiver in a wireless network

In certain embodiments, an apparatus includes circuitry coupled to a switch between a first and second antenna of a device. The circuitry generates a first control signal for the switch to couple a transceiver of the device to the first antenna for transmission of a first data frame. The circuitry determines whether the transceiver has received, within a pre-determined time interval after transmission of the first data frame, a second data frame containing an acknowledgement message confirming successful receipt of the first data frame by another device. The circuitry generates, if the transceiver has not received the second data frame within the pre-determined time interval, a second control signal for the switch to couple the transceiver to the second antenna for re-transmission of the first data frame. An output line of the apparatus couples the circuitry to the switch and communicates the first or second control signal to the switch.

Transmitting/receiving device and method for transmitting data in a radio network

In one embodiment, a transceiver may set a first receive frequency of a first channel of the transceiver and a second receive frequency of a second channel of the transceiver. The transceiver may receive, during a first time interval, a first radio frequency (RF) signal on the first channel. The transceiver may determine that a first measured value indicative of a first detectable received RF signal on the first channel exceeds a first predetermined threshold, and in response, receive a first data frame on the first channel. The transceiver may receive, during a second time interval, a second RF signal on the second channel. The transceiver determine that a second measured value indicative of a second detectable received RF signal on the second channel exceeds the first predetermined threshold, and in response, receive a second data frame on the second channel.

Operating a transceiver

In certain embodiments, a device includes a first filter. The first filter is operable to produce at least one correlation result by at least correlating an input signal sequence with a link sequence. The first filter includes a delay element. The device also includes a second filter sharing the delay element of the first filter.

Correlation device

In one embodiment, receiving a first radio frequency (RF) signal from a first node, generating a first digital data set by decoding the first received RF signal, determining whether a first address in the first digital data set is associated with at least one of a first radio network or a second radio network by comparing the first address to a first set of addresses associated with the first radio network and a second set of addresses associated with the second radio network, appending a first status to the first digital data set indicating that the first address is associated with the first or second radio network, and transmitting an interrupt signal and the first digital data set to a microcontroller for evaluation by the microcontroller in response to determining that the first address is associated with at least one of the first or second radio network.

Transmitting-receiving apparatus

A receiver and method for operating a receiver, in particular of a radio network, is provided, whereby the receiver includes circuit blocks in a receive path for detecting a preamble of a received signal, and a controller for controlling a receive mode. Whereby at least some of the circuit blocks are designed to be capable of being turned on for a turn-on duration and turned off for a turn-off duration. Whereby, the controller is configured to alternately turn on at least some of the circuit blocks for the turn-on duration and off for the turn-off duration during the receive mode, wherein the turn-off duration is shorter than the preamble. Whereby, the controller is configured to compare a first measured value measured in the receive path to a first threshold, and the controller is configured to change the turn-on duration and/or the turn-off duration on the basis of a result of the comparison with the first threshold, and whereby the controller is configured to compare a second measured value to a second threshold in order to detect a valid signal of the preamble and, on the basis of a result of the comparison with the second threshold, to terminate the turn-off and to drive the portion of the circuit blocks into a turned-on state for a synchronization by means of the preamble.

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Dresden, Germany

Tilo Ferchland